diff options
Diffstat (limited to 'src/plugins/platforms/xcb/nativepainting')
14 files changed, 8411 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/nativepainting/nativepainting.pri b/src/plugins/platforms/xcb/nativepainting/nativepainting.pri new file mode 100644 index 0000000000..78ed00843f --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/nativepainting.pri @@ -0,0 +1,22 @@ +qtConfig(xcb-native-painting) { + qtConfig(xrender): QMAKE_USE += xrender + qtConfig(fontconfig): QMAKE_USE_PRIVATE += freetype + + INCLUDEPATH += $$PWD + HEADERS += \ + $$PWD/qtessellator_p.h \ + $$PWD/qpixmap_x11_p.h \ + $$PWD/qpaintengine_x11_p.h \ + $$PWD/qt_x11_p.h \ + $$PWD/qcolormap_x11_p.h \ + $$PWD/qbackingstore_x11_p.h \ + $$PWD/qxcbnativepainting.h + + SOURCES += \ + $$PWD/qtessellator.cpp \ + $$PWD/qpixmap_x11.cpp \ + $$PWD/qpaintengine_x11.cpp \ + $$PWD/qcolormap_x11.cpp \ + $$PWD/qbackingstore_x11.cpp \ + $$PWD/qxcbnativepainting.cpp +} diff --git a/src/plugins/platforms/xcb/nativepainting/qbackingstore_x11.cpp b/src/plugins/platforms/xcb/nativepainting/qbackingstore_x11.cpp new file mode 100644 index 0000000000..2dd2cdd9e3 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qbackingstore_x11.cpp @@ -0,0 +1,203 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qbackingstore_x11_p.h" +#include "qxcbwindow.h" +#include "qpixmap_x11_p.h" + +#include <private/qhighdpiscaling_p.h> +#include <QPainter> + +#if QT_CONFIG(xrender) +# include <X11/extensions/Xrender.h> +#endif + +#include <X11/Xlib.h> + +#ifndef None +#define None 0L +#endif + +QT_BEGIN_NAMESPACE + +QXcbNativeBackingStore::QXcbNativeBackingStore(QWindow *window) + : QPlatformBackingStore(window) + , m_translucentBackground(false) +{ + if (QXcbWindow *w = static_cast<QXcbWindow *>(window->handle())) + m_translucentBackground = w->connection()->hasXRender() && QImage::toPixelFormat(w->imageFormat()).alphaSize() > 0; +} + +QXcbNativeBackingStore::~QXcbNativeBackingStore() +{} + +QPaintDevice *QXcbNativeBackingStore::paintDevice() +{ + return &m_pixmap; +} + +void QXcbNativeBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset) +{ + if (m_pixmap.isNull()) + return; + + QSize pixmapSize = m_pixmap.size(); + + QRegion clipped = region; + clipped &= QRect(QPoint(), QHighDpi::toNativePixels(window->size(), window)); + clipped &= QRect(0, 0, pixmapSize.width(), pixmapSize.height()).translated(-offset); + + QRect br = clipped.boundingRect(); + if (br.isNull()) + return; + + QXcbWindow *platformWindow = static_cast<QXcbWindow *>(window->handle()); + if (!platformWindow) { + qWarning("QXcbBackingStore::flush: QWindow has no platform window (QTBUG-32681)"); + return; + } + + Window wid = platformWindow->xcb_window(); + Pixmap pid = qt_x11PixmapHandle(m_pixmap); + + QVector<XRectangle> clipRects = qt_region_to_xrectangles(clipped); + +#if QT_CONFIG(xrender) + if (m_translucentBackground) + { + XWindowAttributes attrib; + XGetWindowAttributes(display(), wid, &attrib); + XRenderPictFormat *format = XRenderFindVisualFormat(display(), attrib.visual); + + Picture srcPic = qt_x11PictureHandle(m_pixmap); + Picture dstPic = XRenderCreatePicture(display(), wid, format, 0, 0); + + XRenderSetPictureClipRectangles(display(), dstPic, 0, 0, clipRects.constData(), clipRects.size()); + + XRenderComposite(display(), PictOpSrc, srcPic, None, dstPic, + br.x() + offset.x(), br.y() + offset.y(), + 0, 0, + br.x(), br.y(), + br.width(), br.height()); + + XRenderFreePicture(display(), dstPic); + } + else +#endif + { + GC gc = XCreateGC(display(), wid, 0, Q_NULLPTR); + + if (clipRects.size() != 1) + XSetClipRectangles(display(), gc, 0, 0, clipRects.data(), clipRects.size(), YXBanded); + + XCopyArea(display(), pid, wid, gc, br.x() + offset.x(), br.y() + offset.y(), br.width(), br.height(), br.x(), br.y()); + XFreeGC(display(), gc); + } + + + if (platformWindow->needsSync()) { + platformWindow->updateSyncRequestCounter(); + } else { + XFlush(display()); + } +} + +QImage QXcbNativeBackingStore::toImage() const +{ + return m_pixmap.toImage(); +} + +void QXcbNativeBackingStore::resize(const QSize &size, const QRegion &staticContents) +{ + if (size == m_pixmap.size()) + return; + + QPixmap newPixmap(size); + +#if QT_CONFIG(xrender) + if (m_translucentBackground && newPixmap.depth() != 32) + qt_x11Pixmap(newPixmap)->convertToARGB32(); +#endif + + if (!m_pixmap.isNull()) { + Pixmap from = qt_x11PixmapHandle(m_pixmap); + Pixmap to = qt_x11PixmapHandle(newPixmap); + QRect br = staticContents.boundingRect().intersected(QRect(QPoint(0, 0), size)); + + if (!br.isEmpty()) { + GC gc = XCreateGC(display(), to, 0, Q_NULLPTR); + XCopyArea(display(), from, to, gc, br.x(), br.y(), br.width(), br.height(), br.x(), br.y()); + XFreeGC(display(), gc); + } + } + + m_pixmap = newPixmap; +} + +bool QXcbNativeBackingStore::scroll(const QRegion &area, int dx, int dy) +{ + if (m_pixmap.isNull()) + return false; + + QRect rect = area.boundingRect(); + Pixmap pix = qt_x11PixmapHandle(m_pixmap); + + GC gc = XCreateGC(display(), pix, 0, Q_NULLPTR); + XCopyArea(display(), pix, pix, gc, + rect.x(), rect.y(), rect.width(), rect.height(), + rect.x()+dx, rect.y()+dy); + XFreeGC(display(), gc); + return true; +} + +void QXcbNativeBackingStore::beginPaint(const QRegion ®ion) +{ +#if QT_CONFIG(xrender) + if (m_translucentBackground) { + const QVector<XRectangle> xrects = qt_region_to_xrectangles(region); + const XRenderColor color = { 0, 0, 0, 0 }; + XRenderFillRectangles(display(), PictOpSrc, + qt_x11PictureHandle(m_pixmap), &color, + xrects.constData(), xrects.size()); + } +#else + Q_UNUSED(region); +#endif +} + +Display *QXcbNativeBackingStore::display() const +{ + return static_cast<Display *>(static_cast<QXcbWindow *>(window()->handle())->connection()->xlib_display()); +} + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/nativepainting/qbackingstore_x11_p.h b/src/plugins/platforms/xcb/nativepainting/qbackingstore_x11_p.h new file mode 100644 index 0000000000..5f4c24ec11 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qbackingstore_x11_p.h @@ -0,0 +1,70 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QBACKINGSTORE_X11_H +#define QBACKINGSTORE_X11_H + +#include <qpa/qplatformbackingstore.h> + +typedef struct _XDisplay Display; + +QT_BEGIN_NAMESPACE + +class QXcbWindow; + +class QXcbNativeBackingStore : public QPlatformBackingStore +{ +public: + QXcbNativeBackingStore(QWindow *window); + ~QXcbNativeBackingStore(); + + QPaintDevice *paintDevice() override; + void flush(QWindow *window, const QRegion ®ion, const QPoint &offset) override; + + QImage toImage() const override; + + void resize(const QSize &size, const QRegion &staticContents) override; + bool scroll(const QRegion &area, int dx, int dy) override; + + void beginPaint(const QRegion ®ion) override; + +private: + Display *display() const; + + QPixmap m_pixmap; + bool m_translucentBackground; +}; + +QT_END_NAMESPACE + +#endif // QBACKINGSTORE_X11_H diff --git a/src/plugins/platforms/xcb/nativepainting/qcolormap_x11.cpp b/src/plugins/platforms/xcb/nativepainting/qcolormap_x11.cpp new file mode 100644 index 0000000000..8554c5445d --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qcolormap_x11.cpp @@ -0,0 +1,644 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QVarLengthArray> + +#include <private/qguiapplication_p.h> + +#include "qcolormap_x11_p.h" +#include "qxcbnativepainting.h" +#include "qt_x11_p.h" + +QT_BEGIN_NAMESPACE + +class QXcbColormapPrivate +{ +public: + QXcbColormapPrivate() + : ref(1), mode(QXcbColormap::Direct), depth(0), + colormap(0), defaultColormap(true), + visual(0), defaultVisual(true), + r_max(0), g_max(0), b_max(0), + r_shift(0), g_shift(0), b_shift(0) + {} + + QAtomicInt ref; + + QXcbColormap::Mode mode; + int depth; + + Colormap colormap; + bool defaultColormap; + + Visual *visual; + bool defaultVisual; + + int r_max; + int g_max; + int b_max; + + uint r_shift; + uint g_shift; + uint b_shift; + + QVector<QColor> colors; + QVector<int> pixels; +}; + +static uint right_align(uint v) +{ + while (!(v & 0x1)) + v >>= 1; + return v; +} + +static int cube_root(int v) +{ + if (v == 1) + return 1; + // brute force algorithm + int i = 1; + for (;;) { + const int b = i * i * i; + if (b <= v) { + ++i; + } else { + --i; + break; + } + } + return i; +} + +static Visual *find_visual(Display *display, + int screen, + int visual_class, + int visual_id, + int *depth, + bool *defaultVisual) +{ + XVisualInfo *vi, rvi; + int count; + + uint mask = VisualScreenMask; + rvi.screen = screen; + + if (visual_class != -1) { + rvi.c_class = visual_class; + mask |= VisualClassMask; + } + if (visual_id != -1) { + rvi.visualid = visual_id; + mask |= VisualIDMask; + } + + Visual *visual = DefaultVisual(display, screen); + *defaultVisual = true; + *depth = DefaultDepth(display, screen); + + vi = XGetVisualInfo(display, mask, &rvi, &count); + if (vi) { + int best = 0; + for (int x = 0; x < count; ++x) { + if (vi[x].depth > vi[best].depth) + best = x; + } + if (best >= 0 && best <= count && vi[best].visualid != XVisualIDFromVisual(visual)) { + visual = vi[best].visual; + *defaultVisual = (visual == DefaultVisual(display, screen)); + *depth = vi[best].depth; + } + } + if (vi) + XFree((char *)vi); + return visual; +} + +static void query_colormap(QXcbColormapPrivate *d, int screen) +{ + Display *display = X11->display; + + // query existing colormap + int q_colors = (((1u << d->depth) > 256u) ? 256u : (1u << d->depth)); + XColor queried[256]; + memset(queried, 0, sizeof(queried)); + for (int x = 0; x < q_colors; ++x) + queried[x].pixel = x; + XQueryColors(display, d->colormap, queried, q_colors); + + d->colors.resize(q_colors); + for (int x = 0; x < q_colors; ++x) { + if (queried[x].red == 0 + && queried[x].green == 0 + && queried[x].blue == 0 + && queried[x].pixel != BlackPixel(display, screen)) { + // unallocated color cell, skip it + continue; + } + + d->colors[x] = QColor::fromRgbF(queried[x].red / float(USHRT_MAX), + queried[x].green / float(USHRT_MAX), + queried[x].blue / float(USHRT_MAX)); + } + + // for missing colors, find the closest color in the existing colormap + Q_ASSERT(d->pixels.size()); + for (int x = 0; x < d->pixels.size(); ++x) { + if (d->pixels.at(x) != -1) + continue; + + QRgb rgb; + if (d->mode == QXcbColormap::Indexed) { + const int r = (x / (d->g_max * d->b_max)) % d->r_max; + const int g = (x / d->b_max) % d->g_max; + const int b = x % d->b_max; + rgb = qRgb((r * 0xff + (d->r_max - 1) / 2) / (d->r_max - 1), + (g * 0xff + (d->g_max - 1) / 2) / (d->g_max - 1), + (b * 0xff + (d->b_max - 1) / 2) / (d->b_max - 1)); + } else { + rgb = qRgb(x, x, x); + } + + // find closest color + int mindist = INT_MAX, best = -1; + for (int y = 0; y < q_colors; ++y) { + int r = qRed(rgb) - (queried[y].red >> 8); + int g = qGreen(rgb) - (queried[y].green >> 8); + int b = qBlue(rgb) - (queried[y].blue >> 8); + int dist = (r * r) + (g * g) + (b * b); + if (dist < mindist) { + mindist = dist; + best = y; + } + } + + Q_ASSERT(best >= 0 && best < q_colors); + if (d->visual->c_class & 1) { + XColor xcolor; + xcolor.red = queried[best].red; + xcolor.green = queried[best].green; + xcolor.blue = queried[best].blue; + xcolor.pixel = queried[best].pixel; + + if (XAllocColor(display, d->colormap, &xcolor)) { + d->pixels[x] = xcolor.pixel; + } else { + // some weird stuff is going on... + d->pixels[x] = (qGray(rgb) < 127 + ? BlackPixel(display, screen) + : WhitePixel(display, screen)); + } + } else { + d->pixels[x] = best; + } + } +} + +static void init_gray(QXcbColormapPrivate *d, int screen) +{ + d->pixels.resize(d->r_max); + + for (int g = 0; g < d->g_max; ++g) { + const int gray = (g * 0xff + (d->r_max - 1) / 2) / (d->r_max - 1); + const QRgb rgb = qRgb(gray, gray, gray); + + d->pixels[g] = -1; + + if (d->visual->c_class & 1) { + XColor xcolor; + xcolor.red = qRed(rgb) * 0x101; + xcolor.green = qGreen(rgb) * 0x101; + xcolor.blue = qBlue(rgb) * 0x101; + xcolor.pixel = 0ul; + + if (XAllocColor(X11->display, d->colormap, &xcolor)) + d->pixels[g] = xcolor.pixel; + } + } + + query_colormap(d, screen); +} + +static void init_indexed(QXcbColormapPrivate *d, int screen) +{ + d->pixels.resize(d->r_max * d->g_max * d->b_max); + + // create color cube + for (int x = 0, r = 0; r < d->r_max; ++r) { + for (int g = 0; g < d->g_max; ++g) { + for (int b = 0; b < d->b_max; ++b, ++x) { + const QRgb rgb = qRgb((r * 0xff + (d->r_max - 1) / 2) / (d->r_max - 1), + (g * 0xff + (d->g_max - 1) / 2) / (d->g_max - 1), + (b * 0xff + (d->b_max - 1) / 2) / (d->b_max - 1)); + + d->pixels[x] = -1; + + if (d->visual->c_class & 1) { + XColor xcolor; + xcolor.red = qRed(rgb) * 0x101; + xcolor.green = qGreen(rgb) * 0x101; + xcolor.blue = qBlue(rgb) * 0x101; + xcolor.pixel = 0ul; + + if (XAllocColor(X11->display, d->colormap, &xcolor)) + d->pixels[x] = xcolor.pixel; + } + } + } + } + + query_colormap(d, screen); +} + +static void init_direct(QXcbColormapPrivate *d, bool ownColormap) +{ + if (d->visual->c_class != DirectColor || !ownColormap) + return; + + // preallocate 768 on the stack, so that we don't have to malloc + // for the common case (<= 24 bpp) + QVarLengthArray<XColor, 768> colorTable(d->r_max + d->g_max + d->b_max); + int i = 0; + + for (int r = 0; r < d->r_max; ++r) { + colorTable[i].red = r << 8 | r; + colorTable[i].pixel = r << d->r_shift; + colorTable[i].flags = DoRed; + ++i; + } + + for (int g = 0; g < d->g_max; ++g) { + colorTable[i].green = g << 8 | g; + colorTable[i].pixel = g << d->g_shift; + colorTable[i].flags = DoGreen; + ++i; + } + + for (int b = 0; b < d->b_max; ++b) { + colorTable[i].blue = (b << 8 | b); + colorTable[i].pixel = b << d->b_shift; + colorTable[i].flags = DoBlue; + ++i; + } + + XStoreColors(X11->display, d->colormap, colorTable.data(), colorTable.count()); +} + +static QXcbColormap **cmaps = 0; + +void QXcbColormap::initialize() +{ + Display *display = X11->display; + const int screens = ScreenCount(display); + + cmaps = new QXcbColormap*[screens]; + + for (int i = 0; i < screens; ++i) { + cmaps[i] = new QXcbColormap; + QXcbColormapPrivate * const d = cmaps[i]->d; + + bool use_stdcmap = false; + int color_count = X11->color_count; + + // defaults + d->depth = DefaultDepth(display, i); + d->colormap = DefaultColormap(display, i); + d->defaultColormap = true; + d->visual = DefaultVisual(display, i); + d->defaultVisual = true; + + Visual *argbVisual = 0; + + if (X11->visual && i == DefaultScreen(display)) { + // only use the outside colormap on the default screen + d->visual = find_visual(display, i, X11->visual->c_class, + XVisualIDFromVisual(X11->visual), + &d->depth, &d->defaultVisual); + } else if ((X11->visual_class != -1 && X11->visual_class >= 0 && X11->visual_class < 6) + || (X11->visual_id != -1)) { + // look for a specific visual or type of visual + d->visual = find_visual(display, i, X11->visual_class, X11->visual_id, + &d->depth, &d->defaultVisual); + } else if (!X11->custom_cmap) { + XStandardColormap *stdcmap = 0; + int ncmaps = 0; + +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + int nvi; + XVisualInfo templ; + templ.screen = i; + templ.depth = 32; + templ.c_class = TrueColor; + XVisualInfo *xvi = XGetVisualInfo(X11->display, VisualScreenMask | + VisualDepthMask | + VisualClassMask, &templ, &nvi); + for (int idx = 0; idx < nvi; ++idx) { + XRenderPictFormat *format = XRenderFindVisualFormat(X11->display, + xvi[idx].visual); + if (format->type == PictTypeDirect && format->direct.alphaMask) { + argbVisual = xvi[idx].visual; + break; + } + } + XFree(xvi); + } +#endif + if (XGetRGBColormaps(display, RootWindow(display, i), + &stdcmap, &ncmaps, XA_RGB_DEFAULT_MAP)) { + if (stdcmap) { + for (int c = 0; c < ncmaps; ++c) { + if (!stdcmap[c].red_max || + !stdcmap[c].green_max || + !stdcmap[c].blue_max || + !stdcmap[c].red_mult || + !stdcmap[c].green_mult || + !stdcmap[c].blue_mult) + continue; // invalid stdcmap + + XVisualInfo proto; + proto.visualid = stdcmap[c].visualid; + proto.screen = i; + + int nvisuals = 0; + XVisualInfo *vi = XGetVisualInfo(display, VisualIDMask | VisualScreenMask, + &proto, &nvisuals); + if (vi) { + if (nvisuals > 0) { + use_stdcmap = true; + + d->mode = ((vi[0].visual->c_class < StaticColor) + ? Gray + : ((vi[0].visual->c_class < TrueColor) + ? Indexed + : Direct)); + + d->depth = vi[0].depth; + d->colormap = stdcmap[c].colormap; + d->defaultColormap = true; + d->visual = vi[0].visual; + d->defaultVisual = (d->visual == DefaultVisual(display, i)); + + d->r_max = stdcmap[c].red_max + 1; + d->g_max = stdcmap[c].green_max + 1; + d->b_max = stdcmap[c].blue_max + 1; + + if (d->mode == Direct) { + // calculate offsets + d->r_shift = lowest_bit(d->visual->red_mask); + d->g_shift = lowest_bit(d->visual->green_mask); + d->b_shift = lowest_bit(d->visual->blue_mask); + } else { + d->r_shift = 0; + d->g_shift = 0; + d->b_shift = 0; + } + } + XFree(vi); + } + break; + } + XFree(stdcmap); + } + } + } + if (!use_stdcmap) { + switch (d->visual->c_class) { + case StaticGray: + d->mode = Gray; + + d->r_max = d->g_max = d->b_max = d->visual->map_entries; + break; + + case XGrayScale: + d->mode = Gray; + + // follow precedent set in libXmu... + if (color_count != 0) + d->r_max = d->g_max = d->b_max = color_count; + else if (d->visual->map_entries > 65000) + d->r_max = d->g_max = d->b_max = 4096; + else if (d->visual->map_entries > 4000) + d->r_max = d->g_max = d->b_max = 512; + else if (d->visual->map_entries > 250) + d->r_max = d->g_max = d->b_max = 12; + else + d->r_max = d->g_max = d->b_max = 4; + break; + + case StaticColor: + d->mode = Indexed; + + d->r_max = right_align(d->visual->red_mask) + 1; + d->g_max = right_align(d->visual->green_mask) + 1; + d->b_max = right_align(d->visual->blue_mask) + 1; + break; + + case PseudoColor: + d->mode = Indexed; + + // follow precedent set in libXmu... + if (color_count != 0) + d->r_max = d->g_max = d->b_max = cube_root(color_count); + else if (d->visual->map_entries > 65000) + d->r_max = d->g_max = d->b_max = 27; + else if (d->visual->map_entries > 4000) + d->r_max = d->g_max = d->b_max = 12; + else if (d->visual->map_entries > 250) + d->r_max = d->g_max = d->b_max = cube_root(d->visual->map_entries - 125); + else + d->r_max = d->g_max = d->b_max = cube_root(d->visual->map_entries); + break; + + case TrueColor: + case DirectColor: + d->mode = Direct; + + d->r_max = right_align(d->visual->red_mask) + 1; + d->g_max = right_align(d->visual->green_mask) + 1; + d->b_max = right_align(d->visual->blue_mask) + 1; + + d->r_shift = lowest_bit(d->visual->red_mask); + d->g_shift = lowest_bit(d->visual->green_mask); + d->b_shift = lowest_bit(d->visual->blue_mask); + break; + } + } + + bool ownColormap = false; + if (X11->colormap && i == DefaultScreen(display)) { + // only use the outside colormap on the default screen + d->colormap = X11->colormap; + d->defaultColormap = (d->colormap == DefaultColormap(display, i)); + } else if ((!use_stdcmap + && (((d->visual->c_class & 1) && X11->custom_cmap) + || d->visual != DefaultVisual(display, i))) + || d->visual->c_class == DirectColor) { + // allocate custom colormap (we always do this when using DirectColor visuals) + d->colormap = + XCreateColormap(display, RootWindow(display, i), d->visual, + d->visual->c_class == DirectColor ? AllocAll : AllocNone); + d->defaultColormap = false; + ownColormap = true; + } + + switch (d->mode) { + case Gray: + init_gray(d, i); + break; + case Indexed: + init_indexed(d, i); + break; + case Direct: + init_direct(d, ownColormap); + break; + } + + QX11InfoData *screen = X11->screens + i; + screen->depth = d->depth; + screen->visual = d->visual; + screen->defaultVisual = d->defaultVisual; + screen->colormap = d->colormap; + screen->defaultColormap = d->defaultColormap; + screen->cells = screen->visual->map_entries; + + if (argbVisual) { + X11->argbVisuals[i] = argbVisual; + X11->argbColormaps[i] = XCreateColormap(display, RootWindow(display, i), argbVisual, AllocNone); + } + + // ### + // We assume that 8bpp == pseudocolor, but this is not + // always the case (according to the X server), so we need + // to make sure that our internal data is setup in a way + // that is compatible with our assumptions + if (screen->visual->c_class == TrueColor && screen->depth == 8 && screen->cells == 8) + screen->cells = 256; + } +} + +void QXcbColormap::cleanup() +{ + Display *display = X11->display; + const int screens = ScreenCount(display); + + for (int i = 0; i < screens; ++i) + delete cmaps[i]; + + delete [] cmaps; + cmaps = 0; +} + + +QXcbColormap QXcbColormap::instance(int screen) +{ + if (screen == -1) + screen = QXcbX11Info::appScreen(); + return *cmaps[screen]; +} + +/*! \internal + Constructs a new colormap. +*/ +QXcbColormap::QXcbColormap() + : d(new QXcbColormapPrivate) +{} + +QXcbColormap::QXcbColormap(const QXcbColormap &colormap) + :d (colormap.d) +{ d->ref.ref(); } + +QXcbColormap::~QXcbColormap() +{ + if (!d->ref.deref()) { + if (!d->defaultColormap) + XFreeColormap(X11->display, d->colormap); + delete d; + } +} + +QXcbColormap::Mode QXcbColormap::mode() const +{ return d->mode; } + +int QXcbColormap::depth() const +{ return d->depth; } + +int QXcbColormap::size() const +{ + return (d->mode == Gray + ? d->r_max + : (d->mode == Indexed + ? d->r_max * d->g_max * d->b_max + : -1)); +} + +uint QXcbColormap::pixel(const QColor &color) const +{ + const QRgba64 rgba64 = color.rgba64(); + // XXX We emulate the raster engine here by getting the + // 8-bit values, but we could instead use the 16-bit + // values for slightly better color accuracy + const uint r = (rgba64.red8() * d->r_max) >> 8; + const uint g = (rgba64.green8() * d->g_max) >> 8; + const uint b = (rgba64.blue8() * d->b_max) >> 8; + if (d->mode != Direct) { + if (d->mode == Gray) + return d->pixels.at((r * 30 + g * 59 + b * 11) / 100); + return d->pixels.at(r * d->g_max * d->b_max + g * d->b_max + b); + } + return (r << d->r_shift) + (g << d->g_shift) + (b << d->b_shift); +} + +const QColor QXcbColormap::colorAt(uint pixel) const +{ + if (d->mode != Direct) { + Q_ASSERT(pixel <= (uint)d->colors.size()); + return d->colors.at(pixel); + } + + const int r = (((pixel & d->visual->red_mask) >> d->r_shift) << 8) / d->r_max; + const int g = (((pixel & d->visual->green_mask) >> d->g_shift) << 8) / d->g_max; + const int b = (((pixel & d->visual->blue_mask) >> d->b_shift) << 8) / d->b_max; + return QColor(r, g, b); +} + +const QVector<QColor> QXcbColormap::colormap() const +{ return d->colors; } + +QXcbColormap &QXcbColormap::operator=(const QXcbColormap &colormap) +{ + qAtomicAssign(d, colormap.d); + return *this; +} + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/nativepainting/qcolormap_x11_p.h b/src/plugins/platforms/xcb/nativepainting/qcolormap_x11_p.h new file mode 100644 index 0000000000..530e3113e4 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qcolormap_x11_p.h @@ -0,0 +1,75 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QCOLORMAP_X11_H +#define QCOLORMAP_X11_H + +#include <QColor> +#include <QVector> + +QT_BEGIN_NAMESPACE + +class QXcbColormapPrivate; +class QXcbColormap +{ +public: + enum Mode { Direct, Indexed, Gray }; + + static void initialize(); + static void cleanup(); + + static QXcbColormap instance(int screen = -1); + + QXcbColormap(const QXcbColormap &colormap); + ~QXcbColormap(); + + QXcbColormap &operator=(const QXcbColormap &colormap); + + Mode mode() const; + + int depth() const; + int size() const; + + uint pixel(const QColor &color) const; + const QColor colorAt(uint pixel) const; + + const QVector<QColor> colormap() const; + +private: + QXcbColormap(); + QXcbColormapPrivate *d; +}; + +QT_END_NAMESPACE + +#endif // QCOLORMAP_X11_H diff --git a/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp b/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp new file mode 100644 index 0000000000..3364b07c08 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11.cpp @@ -0,0 +1,2837 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <private/qpixmapcache_p.h> +#include <private/qpaintengine_p.h> +#include <private/qpolygonclipper_p.h> +#include <private/qpainterpath_p.h> +#include <private/qdrawhelper_p.h> +#include <private/qfontengineglyphcache_p.h> + +#if QT_CONFIG(fontconfig) +#include <private/qfontengine_ft_p.h> +#endif + +#include "qpaintengine_x11_p.h" +#include "qtessellator_p.h" +#include "qpixmap_x11_p.h" +#include "qcolormap_x11_p.h" +#include "qt_x11_p.h" +#include "qxcbexport.h" +#include "qxcbnativepainting.h" + +QT_BEGIN_NAMESPACE + +#if QT_CONFIG(xrender) + +class QXRenderTessellator : public QTessellator +{ +public: + QXRenderTessellator() : traps(0), allocated(0), size(0) {} + ~QXRenderTessellator() { free(traps); } + XTrapezoid *traps; + int allocated; + int size; + void addTrap(const Trapezoid &trap); + QRect tessellate(const QPointF *points, int nPoints, bool winding) { + size = 0; + setWinding(winding); + return QTessellator::tessellate(points, nPoints).toRect(); + } + void done() { + if (allocated > 64) { + free(traps); + traps = 0; + allocated = 0; + } + } +}; + +void QXRenderTessellator::addTrap(const Trapezoid &trap) +{ + if (size == allocated) { + allocated = qMax(2*allocated, 64); + traps = q_check_ptr((XTrapezoid *)realloc(traps, allocated * sizeof(XTrapezoid))); + } + traps[size].top = Q27Dot5ToXFixed(trap.top); + traps[size].bottom = Q27Dot5ToXFixed(trap.bottom); + traps[size].left.p1.x = Q27Dot5ToXFixed(trap.topLeft->x); + traps[size].left.p1.y = Q27Dot5ToXFixed(trap.topLeft->y); + traps[size].left.p2.x = Q27Dot5ToXFixed(trap.bottomLeft->x); + traps[size].left.p2.y = Q27Dot5ToXFixed(trap.bottomLeft->y); + traps[size].right.p1.x = Q27Dot5ToXFixed(trap.topRight->x); + traps[size].right.p1.y = Q27Dot5ToXFixed(trap.topRight->y); + traps[size].right.p2.x = Q27Dot5ToXFixed(trap.bottomRight->x); + traps[size].right.p2.y = Q27Dot5ToXFixed(trap.bottomRight->y); + ++size; +} + +#endif // QT_CONFIG(xrender) + +class QX11PaintEnginePrivate : public QPaintEnginePrivate +{ + Q_DECLARE_PUBLIC(QX11PaintEngine) +public: + QX11PaintEnginePrivate() + { + opacity = 1.0; + scrn = -1; + hd = 0; + picture = 0; + gc = gc_brush = 0; + dpy = 0; + xinfo = 0; + txop = QTransform::TxNone; + has_clipping = false; + render_hints = 0; + xform_scale = 1; +#if QT_CONFIG(xrender) + tessellator = 0; +#endif + } + enum GCMode { + PenGC, + BrushGC + }; + + void init(); + void fillPolygon_translated(const QPointF *points, int pointCount, GCMode gcMode, + QPaintEngine::PolygonDrawMode mode); + void fillPolygon_dev(const QPointF *points, int pointCount, GCMode gcMode, + QPaintEngine::PolygonDrawMode mode); + void fillPath(const QPainterPath &path, GCMode gcmode, bool transform); + void strokePolygon_dev(const QPointF *points, int pointCount, bool close); + void strokePolygon_translated(const QPointF *points, int pointCount, bool close); + void setupAdaptedOrigin(const QPoint &p); + void resetAdaptedOrigin(); + void decidePathFallback() { + use_path_fallback = has_alpha_brush + || has_alpha_pen + || has_custom_pen + || has_complex_xform + || (render_hints & QPainter::Antialiasing); + } + void decideCoordAdjust() { + adjust_coords = !(render_hints & QPainter::Antialiasing) + && (render_hints & QPainter::Qt4CompatiblePainting) + && (has_alpha_pen + || (has_alpha_brush && has_pen && !has_alpha_pen) + || (cpen.style() > Qt::SolidLine)); + } + void clipPolygon_dev(const QPolygonF &poly, QPolygonF *clipped_poly); + void systemStateChanged() override; + inline bool isCosmeticPen() const { + if ((render_hints & QPainter::Qt4CompatiblePainting) && cpen == QPen()) + return true; + return cpen.isCosmetic(); + } + + Display *dpy; + int scrn; + int pdev_depth; + unsigned long hd; + QPixmap brush_pm; +#if QT_CONFIG(xrender) + unsigned long picture; + unsigned long current_brush; + QPixmap bitmap_texture; + int composition_mode; +#else + unsigned long picture; +#endif + GC gc; + GC gc_brush; + + QPen cpen; + QBrush cbrush; + QRegion crgn; + QTransform matrix; + qreal opacity; + + uint has_complex_xform : 1; + uint has_scaling_xform : 1; + uint has_non_scaling_xform : 1; + uint has_custom_pen : 1; + uint use_path_fallback : 1; + uint adjust_coords : 1; + uint has_clipping : 1; + uint adapted_brush_origin : 1; + uint adapted_pen_origin : 1; + uint has_pen : 1; + uint has_brush : 1; + uint has_texture : 1; + uint has_alpha_texture : 1; + uint has_pattern : 1; + uint has_alpha_pen : 1; + uint has_alpha_brush : 1; + uint render_hints; + + const QXcbX11Info *xinfo; + QPointF bg_origin; + QTransform::TransformationType txop; + qreal xform_scale; + + struct qt_float_point + { + qreal x, y; + }; + QPolygonClipper<qt_float_point, qt_float_point, float> polygonClipper; + + int xlibMaxLinePoints; +#if QT_CONFIG(xrender) + QXRenderTessellator *tessellator; +#endif +}; + +#if QT_CONFIG(xrender) +class QXRenderGlyphCache : public QFontEngineGlyphCache +{ +public: + QXRenderGlyphCache(QXcbX11Info x, QFontEngine::GlyphFormat format, const QTransform &matrix); + ~QXRenderGlyphCache(); + + bool addGlyphs(const QTextItemInt &ti, QVarLengthArray<glyph_t> glyphs, QVarLengthArray<QFixedPoint> positions); + bool draw(Drawable src, Drawable dst, const QTransform &matrix, const QTextItemInt &ti); + + inline GlyphSet glyphSet(); + inline int glyphBufferSize(const QFontEngineFT::Glyph &glyph) const; + + inline QImage::Format imageFormat() const; + inline const XRenderPictFormat *renderPictFormat() const; + + static inline QFontEngine::GlyphFormat glyphFormatForDepth(QFontEngine *fontEngine, int depth); + static inline Glyph glyphId(glyph_t glyph, QFixed subPixelPosition); + + static inline bool isValidCoordinate(const QFixedPoint &fp); + +private: + QXcbX11Info xinfo; + GlyphSet gset; + QSet<Glyph> cachedGlyphs; +}; +#endif // QT_CONFIG(xrender) + +extern QPixmap qt_pixmapForBrush(int brushStyle, bool invert); //in qbrush.cpp +extern QPixmap qt_toX11Pixmap(const QPixmap &pixmap); + +extern "C" { +Q_XCB_EXPORT Drawable qt_x11Handle(const QPaintDevice *pd) +{ + if (!pd) + return 0; + +// if (pd->devType() == QInternal::Widget) +// return static_cast<const QWidget *>(pd)->handle(); + + if (pd->devType() == QInternal::Pixmap) + return qt_x11PixmapHandle(*static_cast<const QPixmap *>(pd)); + + return 0; +} +} + +static const QXcbX11Info *qt_x11Info(const QPaintDevice *pd) +{ + if (!pd) + return 0; + +// if (pd->devType() == QInternal::Widget) +// return &static_cast<const QWidget *>(pd)->x11Info(); + + if (pd->devType() == QInternal::Pixmap) + return &qt_x11Info(*static_cast<const QPixmap *>(pd)); + + return 0; +} + +// use the same rounding as in qrasterizer.cpp (6 bit fixed point) +static const qreal aliasedCoordinateDelta = 0.5 - 0.015625; + +#undef X11 // defined in qt_x11_p.h +extern "C" { +/*! + Returns the X11 specific pen GC for the painter \a p. Note that + QPainter::begin() must be called before this function returns a + valid GC. +*/ +GC Q_XCB_EXPORT qt_x11_get_pen_gc(QPainter *p) +{ + if (p && p->paintEngine() + && p->paintEngine()->isActive() + && p->paintEngine()->type() == QPaintEngine::X11) { + return static_cast<QX11PaintEngine *>(p->paintEngine())->d_func()->gc; + } + return 0; +} + +/*! + Returns the X11 specific brush GC for the painter \a p. Note that + QPainter::begin() must be called before this function returns a + valid GC. +*/ +GC Q_XCB_EXPORT qt_x11_get_brush_gc(QPainter *p) +{ + if (p && p->paintEngine() + && p->paintEngine()->isActive() + && p->paintEngine()->type() == QPaintEngine::X11) { + return static_cast<QX11PaintEngine *>(p->paintEngine())->d_func()->gc_brush; + } + return 0; +} +} +#define X11 qt_x11Data + +// internal helper. Converts an integer value to an unique string token +template <typename T> + struct HexString +{ + inline HexString(const T t) + : val(t) + {} + + inline void write(QChar *&dest) const + { + const ushort hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; + const char *c = reinterpret_cast<const char *>(&val); + for (uint i = 0; i < sizeof(T); ++i) { + *dest++ = hexChars[*c & 0xf]; + *dest++ = hexChars[(*c & 0xf0) >> 4]; + ++c; + } + } + const T val; +}; + +// specialization to enable fast concatenating of our string tokens to a string +template <typename T> + struct QConcatenable<HexString<T> > +{ + typedef HexString<T> type; + enum { ExactSize = true }; + static int size(const HexString<T> &) { return sizeof(T) * 2; } + static inline void appendTo(const HexString<T> &str, QChar *&out) { str.write(out); } + typedef QString ConvertTo; +}; + +#if QT_CONFIG(xrender) +static const int compositionModeToRenderOp[QPainter::CompositionMode_Xor + 1] = { + PictOpOver, //CompositionMode_SourceOver, + PictOpOverReverse, //CompositionMode_DestinationOver, + PictOpClear, //CompositionMode_Clear, + PictOpSrc, //CompositionMode_Source, + PictOpDst, //CompositionMode_Destination, + PictOpIn, //CompositionMode_SourceIn, + PictOpInReverse, //CompositionMode_DestinationIn, + PictOpOut, //CompositionMode_SourceOut, + PictOpOutReverse, //CompositionMode_DestinationOut, + PictOpAtop, //CompositionMode_SourceAtop, + PictOpAtopReverse, //CompositionMode_DestinationAtop, + PictOpXor //CompositionMode_Xor +}; + +static inline int qpainterOpToXrender(QPainter::CompositionMode mode) +{ + Q_ASSERT(mode <= QPainter::CompositionMode_Xor); + return compositionModeToRenderOp[mode]; +} + +static inline bool complexPictOp(int op) +{ + return op != PictOpOver && op != PictOpSrc; +} +#endif + +static inline void x11SetClipRegion(Display *dpy, GC gc, GC gc2, +#if QT_CONFIG(xrender) + Picture picture, +#else + Qt::HANDLE picture, +#endif + const QRegion &r) +{ +// int num; +// XRectangle *rects = (XRectangle *)qt_getClipRects(r, num); + QVector<XRectangle> rects = qt_region_to_xrectangles(r); + int num = rects.size(); + + if (gc) + XSetClipRectangles( dpy, gc, 0, 0, rects.data(), num, Unsorted ); + if (gc2) + XSetClipRectangles( dpy, gc2, 0, 0, rects.data(), num, Unsorted ); + +#if QT_CONFIG(xrender) + if (picture) + XRenderSetPictureClipRectangles(dpy, picture, 0, 0, rects.data(), num); +#else + Q_UNUSED(picture); +#endif // QT_CONFIG(xrender) +} + + +static inline void x11ClearClipRegion(Display *dpy, GC gc, GC gc2, +#if QT_CONFIG(xrender) + Picture picture +#else + Qt::HANDLE picture +#endif + ) +{ + if (gc) + XSetClipMask(dpy, gc, XNone); + if (gc2) + XSetClipMask(dpy, gc2, XNone); + +#if QT_CONFIG(xrender) + if (picture) { + XRenderPictureAttributes attrs; + attrs.clip_mask = XNone; + XRenderChangePicture (dpy, picture, CPClipMask, &attrs); + } +#else + Q_UNUSED(picture); +#endif // QT_CONFIG(xrender) +} + + +#define DITHER_SIZE 16 +static const uchar base_dither_matrix[DITHER_SIZE][DITHER_SIZE] = { + { 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 }, + { 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 }, + { 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 }, + { 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 }, + { 8,200, 56,248, 4,196, 52,244, 11,203, 59,251, 7,199, 55,247 }, + { 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 }, + { 40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 }, + { 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 }, + { 2,194, 50,242, 14,206, 62,254, 1,193, 49,241, 13,205, 61,253 }, + { 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 }, + { 34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 }, + { 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 }, + { 10,202, 58,250, 6,198, 54,246, 9,201, 57,249, 5,197, 53,245 }, + { 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 }, + { 42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 }, + { 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 } +}; + +static QPixmap qt_patternForAlpha(uchar alpha, int screen) +{ + QPixmap pm; + QString key = QLatin1Literal("$qt-alpha-brush$") + % HexString<uchar>(alpha) + % HexString<int>(screen); + + if (!QPixmapCache::find(key, pm)) { + // #### why not use a mono image here???? + QImage pattern(DITHER_SIZE, DITHER_SIZE, QImage::Format_ARGB32); + pattern.fill(0xffffffff); + for (int y = 0; y < DITHER_SIZE; ++y) { + for (int x = 0; x < DITHER_SIZE; ++x) { + if (base_dither_matrix[x][y] <= alpha) + pattern.setPixel(x, y, 0x00000000); + } + } + pm = QBitmap::fromImage(pattern); + qt_x11SetScreen(pm, screen); + //pm.x11SetScreen(screen); + QPixmapCache::insert(key, pm); + } + return pm; +} + + +#if QT_CONFIG(xrender) +static Picture getPatternFill(int screen, const QBrush &b) +{ + if (!X11->use_xrender) + return XNone; + + XRenderColor color = X11->preMultiply(b.color()); + XRenderColor bg_color; + + bg_color = X11->preMultiply(QColor(0, 0, 0, 0)); + + for (int i = 0; i < X11->pattern_fill_count; ++i) { + if (X11->pattern_fills[i].screen == screen + && X11->pattern_fills[i].opaque == false + && X11->pattern_fills[i].style == b.style() + && X11->pattern_fills[i].color.alpha == color.alpha + && X11->pattern_fills[i].color.red == color.red + && X11->pattern_fills[i].color.green == color.green + && X11->pattern_fills[i].color.blue == color.blue + && X11->pattern_fills[i].bg_color.alpha == bg_color.alpha + && X11->pattern_fills[i].bg_color.red == bg_color.red + && X11->pattern_fills[i].bg_color.green == bg_color.green + && X11->pattern_fills[i].bg_color.blue == bg_color.blue) + return X11->pattern_fills[i].picture; + } + // none found, replace one + int i = qrand() % 16; + + if (X11->pattern_fills[i].screen != screen && X11->pattern_fills[i].picture) { + XRenderFreePicture (QXcbX11Info::display(), X11->pattern_fills[i].picture); + X11->pattern_fills[i].picture = 0; + } + + if (!X11->pattern_fills[i].picture) { + Pixmap pixmap = XCreatePixmap (QXcbX11Info::display(), RootWindow (QXcbX11Info::display(), screen), 8, 8, 32); + XRenderPictureAttributes attrs; + attrs.repeat = True; + X11->pattern_fills[i].picture = XRenderCreatePicture (QXcbX11Info::display(), pixmap, + XRenderFindStandardFormat(QXcbX11Info::display(), PictStandardARGB32), + CPRepeat, &attrs); + XFreePixmap (QXcbX11Info::display(), pixmap); + } + + X11->pattern_fills[i].screen = screen; + X11->pattern_fills[i].color = color; + X11->pattern_fills[i].bg_color = bg_color; + X11->pattern_fills[i].opaque = false; + X11->pattern_fills[i].style = b.style(); + + XRenderFillRectangle(QXcbX11Info::display(), PictOpSrc, X11->pattern_fills[i].picture, &bg_color, 0, 0, 8, 8); + + QPixmap pattern(qt_pixmapForBrush(b.style(), true)); + XRenderPictureAttributes attrs; + attrs.repeat = true; + XRenderChangePicture(QXcbX11Info::display(), qt_x11PictureHandle(pattern), CPRepeat, &attrs); + + Picture fill_fg = X11->getSolidFill(screen, b.color()); + XRenderComposite(QXcbX11Info::display(), PictOpOver, fill_fg, qt_x11PictureHandle(pattern), + X11->pattern_fills[i].picture, + 0, 0, 0, 0, 0, 0, 8, 8); + + return X11->pattern_fills[i].picture; +} + +static void qt_render_bitmap(Display *dpy, int scrn, Picture src, Picture dst, + int sx, int sy, int x, int y, int sw, int sh, + const QPen &pen) +{ + Picture fill_fg = X11->getSolidFill(scrn, pen.color()); + XRenderComposite(dpy, PictOpOver, + fill_fg, src, dst, sx, sy, sx, sy, x, y, sw, sh); +} +#endif + +void QX11PaintEnginePrivate::init() +{ + dpy = 0; + scrn = 0; + hd = 0; + picture = 0; + xinfo = 0; +#if QT_CONFIG(xrender) + current_brush = 0; + composition_mode = PictOpOver; + tessellator = new QXRenderTessellator; +#endif +} + +void QX11PaintEnginePrivate::setupAdaptedOrigin(const QPoint &p) +{ + if (adapted_pen_origin) + XSetTSOrigin(dpy, gc, p.x(), p.y()); + if (adapted_brush_origin) + XSetTSOrigin(dpy, gc_brush, p.x(), p.y()); +} + +void QX11PaintEnginePrivate::resetAdaptedOrigin() +{ + if (adapted_pen_origin) + XSetTSOrigin(dpy, gc, 0, 0); + if (adapted_brush_origin) + XSetTSOrigin(dpy, gc_brush, 0, 0); +} + +void QX11PaintEnginePrivate::clipPolygon_dev(const QPolygonF &poly, QPolygonF *clipped_poly) +{ + int clipped_count = 0; + qt_float_point *clipped_points = 0; + polygonClipper.clipPolygon((qt_float_point *) poly.data(), poly.size(), + &clipped_points, &clipped_count); + clipped_poly->resize(clipped_count); + for (int i=0; i<clipped_count; ++i) + (*clipped_poly)[i] = *((QPointF *)(&clipped_points[i])); +} + +void QX11PaintEnginePrivate::systemStateChanged() +{ + Q_Q(QX11PaintEngine); + QPainter *painter = q->state ? q->state->painter() : nullptr; + if (painter && painter->hasClipping()) { + if (q->testDirty(QPaintEngine::DirtyTransform)) + q->updateMatrix(q->state->transform()); + QPolygonF clip_poly_dev(matrix.map(painter->clipPath().toFillPolygon())); + QPolygonF clipped_poly_dev; + clipPolygon_dev(clip_poly_dev, &clipped_poly_dev); + q->updateClipRegion_dev(QRegion(clipped_poly_dev.toPolygon()), Qt::ReplaceClip); + } else { + q->updateClipRegion_dev(QRegion(), Qt::NoClip); + } +} + +static QPaintEngine::PaintEngineFeatures qt_decide_features() +{ + QPaintEngine::PaintEngineFeatures features = + QPaintEngine::PrimitiveTransform + | QPaintEngine::PatternBrush + | QPaintEngine::AlphaBlend + | QPaintEngine::PainterPaths + | QPaintEngine::RasterOpModes; + + if (X11->use_xrender) { + features |= QPaintEngine::Antialiasing; + features |= QPaintEngine::PorterDuff; + features |= QPaintEngine::MaskedBrush; +#if 0 + if (X11->xrender_version > 10) { + features |= QPaintEngine::LinearGradientFill; + // ### + } +#endif + } + + return features; +} + +/* + * QX11PaintEngine members + */ + +QX11PaintEngine::QX11PaintEngine() + : QPaintEngine(*(new QX11PaintEnginePrivate), qt_decide_features()) +{ + Q_D(QX11PaintEngine); + d->init(); +} + +QX11PaintEngine::QX11PaintEngine(QX11PaintEnginePrivate &dptr) + : QPaintEngine(dptr, qt_decide_features()) +{ + Q_D(QX11PaintEngine); + d->init(); +} + +QX11PaintEngine::~QX11PaintEngine() +{ +#if QT_CONFIG(xrender) + Q_D(QX11PaintEngine); + delete d->tessellator; +#endif +} + +bool QX11PaintEngine::begin(QPaintDevice *pdev) +{ + Q_D(QX11PaintEngine); + d->xinfo = qt_x11Info(pdev); +#if QT_CONFIG(xrender) + if (pdev->devType() == QInternal::Pixmap) { + const QPixmap *pm = static_cast<const QPixmap *>(pdev); + QX11PlatformPixmap *data = static_cast<QX11PlatformPixmap*>(pm->handle()); + if (X11->use_xrender && data->depth() != 32 && data->x11_mask) + data->convertToARGB32(); + d->picture = qt_x11PictureHandle(*static_cast<const QPixmap *>(pdev)); + } +#else + d->picture = 0; +#endif + d->hd = qt_x11Handle(pdev); + + Q_ASSERT(d->xinfo != 0); + d->dpy = d->xinfo->display(); // get display variable + d->scrn = d->xinfo->screen(); // get screen variable + + d->crgn = QRegion(); + d->gc = XCreateGC(d->dpy, d->hd, 0, 0); + d->gc_brush = XCreateGC(d->dpy, d->hd, 0, 0); + d->has_alpha_brush = false; + d->has_alpha_pen = false; + d->has_clipping = false; + d->has_complex_xform = false; + d->has_scaling_xform = false; + d->has_non_scaling_xform = true; + d->xform_scale = 1; + d->has_custom_pen = false; + d->matrix = QTransform(); + d->pdev_depth = d->pdev->depth(); + d->render_hints = 0; + d->txop = QTransform::TxNone; + d->use_path_fallback = false; +#if QT_CONFIG(xrender) + d->composition_mode = PictOpOver; +#endif + d->xlibMaxLinePoints = 32762; // a safe number used to avoid, call to XMaxRequestSize(d->dpy) - 3; + d->opacity = 1; + + // Set up the polygon clipper. Note: This will only work in + // polyline mode as long as we have a buffer zone, since a + // polyline may be clipped into several non-connected polylines. + const int BUFFERZONE = 1000; + QRect devClipRect(-BUFFERZONE, -BUFFERZONE, + pdev->width() + 2*BUFFERZONE, pdev->height() + 2*BUFFERZONE); + d->polygonClipper.setBoundingRect(devClipRect); + + setSystemClip(systemClip()); + d->systemStateChanged(); + + qt_x11SetDefaultScreen(d->xinfo->screen()); + + updatePen(QPen(Qt::black)); + updateBrush(QBrush(Qt::white), QPoint()); + + setDirty(QPaintEngine::DirtyClipRegion); + setDirty(QPaintEngine::DirtyPen); + setDirty(QPaintEngine::DirtyBrush); + setDirty(QPaintEngine::DirtyBackground); + + setActive(true); + return true; +} + +bool QX11PaintEngine::end() +{ + Q_D(QX11PaintEngine); + +#if QT_CONFIG(xrender) + if (d->picture) { + // reset clipping/subwindow mode on our render picture + XRenderPictureAttributes attrs; + attrs.subwindow_mode = ClipByChildren; + attrs.clip_mask = XNone; + XRenderChangePicture(d->dpy, d->picture, CPClipMask|CPSubwindowMode, &attrs); + } +#endif + + if (d->gc_brush && d->pdev->painters < 2) { + XFreeGC(d->dpy, d->gc_brush); + d->gc_brush = 0; + } + + if (d->gc && d->pdev->painters < 2) { + XFreeGC(d->dpy, d->gc); + d->gc = 0; + } + + // Restore system clip for alien widgets painting outside the paint event. +// if (d->pdev->devType() == QInternal::Widget && !static_cast<QWidget *>(d->pdev)->internalWinId()) + d->currentClipDevice = nullptr; + setSystemClip(QRegion()); + + setActive(false); + return true; +} + +static bool clipLine(QLineF *line, const QRect &rect) +{ + qreal x1 = line->x1(); + qreal x2 = line->x2(); + qreal y1 = line->y1(); + qreal y2 = line->y2(); + + qreal left = rect.x(); + qreal right = rect.x() + rect.width() - 1; + qreal top = rect.y(); + qreal bottom = rect.y() + rect.height() - 1; + + enum { Left, Right, Top, Bottom }; + // clip the lines, after cohen-sutherland, see e.g. http://www.nondot.org/~sabre/graphpro/line6.html + int p1 = ((x1 < left) << Left) + | ((x1 > right) << Right) + | ((y1 < top) << Top) + | ((y1 > bottom) << Bottom); + int p2 = ((x2 < left) << Left) + | ((x2 > right) << Right) + | ((y2 < top) << Top) + | ((y2 > bottom) << Bottom); + + if (p1 & p2) + // completely outside + return false; + + if (p1 | p2) { + qreal dx = x2 - x1; + qreal dy = y2 - y1; + + // clip x coordinates + if (x1 < left) { + y1 += dy/dx * (left - x1); + x1 = left; + } else if (x1 > right) { + y1 -= dy/dx * (x1 - right); + x1 = right; + } + if (x2 < left) { + y2 += dy/dx * (left - x2); + x2 = left; + } else if (x2 > right) { + y2 -= dy/dx * (x2 - right); + x2 = right; + } + p1 = ((y1 < top) << Top) + | ((y1 > bottom) << Bottom); + p2 = ((y2 < top) << Top) + | ((y2 > bottom) << Bottom); + if (p1 & p2) + return false; + // clip y coordinates + if (y1 < top) { + x1 += dx/dy * (top - y1); + y1 = top; + } else if (y1 > bottom) { + x1 -= dx/dy * (y1 - bottom); + y1 = bottom; + } + if (y2 < top) { + x2 += dx/dy * (top - y2); + y2 = top; + } else if (y2 > bottom) { + x2 -= dx/dy * (y2 - bottom); + y2 = bottom; + } + *line = QLineF(QPointF(x1, y1), QPointF(x2, y2)); + } + return true; +} + +void QX11PaintEngine::drawLines(const QLine *lines, int lineCount) +{ + Q_ASSERT(lines); + Q_ASSERT(lineCount); + Q_D(QX11PaintEngine); + + if (d->has_alpha_brush + || d->has_alpha_pen + || d->has_custom_pen + || (d->cpen.widthF() > 0 && d->has_complex_xform + && !d->has_non_scaling_xform) + || (d->render_hints & QPainter::Antialiasing)) { + for (int i = 0; i < lineCount; ++i) { + QPainterPath path(lines[i].p1()); + path.lineTo(lines[i].p2()); + drawPath(path); + } + return; + } + + if (d->has_pen) { + for (int i = 0; i < lineCount; ++i) { + QLineF linef; + if (d->txop == QTransform::TxNone) { + linef = lines[i]; + } else { + linef = d->matrix.map(QLineF(lines[i])); + } + if (clipLine(&linef, d->polygonClipper.boundingRect())) { + int x1 = qRound(linef.x1() + aliasedCoordinateDelta); + int y1 = qRound(linef.y1() + aliasedCoordinateDelta); + int x2 = qRound(linef.x2() + aliasedCoordinateDelta); + int y2 = qRound(linef.y2() + aliasedCoordinateDelta); + + XDrawLine(d->dpy, d->hd, d->gc, x1, y1, x2, y2); + } + } + } +} + +void QX11PaintEngine::drawLines(const QLineF *lines, int lineCount) +{ + Q_ASSERT(lines); + Q_ASSERT(lineCount); + Q_D(QX11PaintEngine); + + if (d->has_alpha_brush + || d->has_alpha_pen + || d->has_custom_pen + || (d->cpen.widthF() > 0 && d->has_complex_xform + && !d->has_non_scaling_xform) + || (d->render_hints & QPainter::Antialiasing)) { + for (int i = 0; i < lineCount; ++i) { + QPainterPath path(lines[i].p1()); + path.lineTo(lines[i].p2()); + drawPath(path); + } + return; + } + + if (d->has_pen) { + for (int i = 0; i < lineCount; ++i) { + QLineF linef = d->matrix.map(lines[i]); + if (clipLine(&linef, d->polygonClipper.boundingRect())) { + int x1 = qRound(linef.x1() + aliasedCoordinateDelta); + int y1 = qRound(linef.y1() + aliasedCoordinateDelta); + int x2 = qRound(linef.x2() + aliasedCoordinateDelta); + int y2 = qRound(linef.y2() + aliasedCoordinateDelta); + + XDrawLine(d->dpy, d->hd, d->gc, x1, y1, x2, y2); + } + } + } +} + +static inline QLine clipStraightLine(const QRect &clip, const QLine &l) +{ + if (l.p1().x() == l.p2().x()) { + int x = qBound(clip.left(), l.p1().x(), clip.right()); + int y1 = qBound(clip.top(), l.p1().y(), clip.bottom()); + int y2 = qBound(clip.top(), l.p2().y(), clip.bottom()); + + return QLine(x, y1, x, y2); + } else { + Q_ASSERT(l.p1().y() == l.p2().y()); + + int x1 = qBound(clip.left(), l.p1().x(), clip.right()); + int x2 = qBound(clip.left(), l.p2().x(), clip.right()); + int y = qBound(clip.top(), l.p1().y(), clip.bottom()); + + return QLine(x1, y, x2, y); + } +} + +void QX11PaintEngine::drawRects(const QRectF *rects, int rectCount) +{ + Q_D(QX11PaintEngine); + Q_ASSERT(rects); + Q_ASSERT(rectCount); + + if (rectCount != 1 + || d->has_pen + || d->has_alpha_brush + || d->has_complex_xform + || d->has_custom_pen + || d->cbrush.style() != Qt::SolidPattern +#if QT_CONFIG(xrender) + || complexPictOp(d->composition_mode) +#endif + ) + { + QPaintEngine::drawRects(rects, rectCount); + return; + } + + QPoint alignedOffset; + if (d->txop == QTransform::TxTranslate) { + QPointF offset(d->matrix.dx(), d->matrix.dy()); + alignedOffset = offset.toPoint(); + if (offset != QPointF(alignedOffset)) { + QPaintEngine::drawRects(rects, rectCount); + return; + } + } + + const QRectF& r = rects[0]; + QRect alignedRect = r.toAlignedRect(); + if (r != QRectF(alignedRect)) { + QPaintEngine::drawRects(rects, rectCount); + return; + } + alignedRect.translate(alignedOffset); + + QRect clip(d->polygonClipper.boundingRect()); + alignedRect = alignedRect.intersected(clip); + if (alignedRect.isEmpty()) + return; + + // simple-case: + // the rectangle is pixel-aligned + // the fill brush is just a solid non-alpha color + // the painter transform is only integer translation + // ignore: antialiasing and just XFillRectangles directly + XRectangle xrect; + xrect.x = short(alignedRect.x()); + xrect.y = short(alignedRect.y()); + xrect.width = ushort(alignedRect.width()); + xrect.height = ushort(alignedRect.height()); + XFillRectangles(d->dpy, d->hd, d->gc_brush, &xrect, 1); +} + +void QX11PaintEngine::drawRects(const QRect *rects, int rectCount) +{ + Q_D(QX11PaintEngine); + Q_ASSERT(rects); + Q_ASSERT(rectCount); + + if (d->has_alpha_pen + || d->has_complex_xform + || d->has_custom_pen + || (d->render_hints & QPainter::Antialiasing)) + { + for (int i = 0; i < rectCount; ++i) { + QPainterPath path; + path.addRect(rects[i]); + drawPath(path); + } + return; + } + + QRect clip(d->polygonClipper.boundingRect()); + QPoint offset(qRound(d->matrix.dx()), qRound(d->matrix.dy())); +#if QT_CONFIG(xrender) + ::Picture pict = d->picture; + + if (X11->use_xrender && pict && d->has_brush && d->pdev_depth != 1 + && (d->has_texture || d->has_alpha_brush || complexPictOp(d->composition_mode))) + { + XRenderColor xc; + if (!d->has_texture && !d->has_pattern) + xc = X11->preMultiply(d->cbrush.color()); + + for (int i = 0; i < rectCount; ++i) { + QRect r(rects[i]); + if (d->txop == QTransform::TxTranslate) + r.translate(offset); + + if (r.width() == 0 || r.height() == 0) { + if (d->has_pen) { + const QLine l = clipStraightLine(clip, QLine(r.left(), r.top(), r.left() + r.width(), r.top() + r.height())); + XDrawLine(d->dpy, d->hd, d->gc, l.p1().x(), l.p1().y(), l.p2().x(), l.p2().y()); + } + continue; + } + + r = r.intersected(clip); + if (r.isEmpty()) + continue; + if (d->has_texture || d->has_pattern) { + XRenderComposite(d->dpy, d->composition_mode, d->current_brush, 0, pict, + qRound(r.x() - d->bg_origin.x()), qRound(r.y() - d->bg_origin.y()), + 0, 0, r.x(), r.y(), r.width(), r.height()); + } else { + XRenderFillRectangle(d->dpy, d->composition_mode, pict, &xc, r.x(), r.y(), r.width(), r.height()); + } + if (d->has_pen) + XDrawRectangle(d->dpy, d->hd, d->gc, r.x(), r.y(), r.width(), r.height()); + } + } else +#endif // QT_CONFIG(xrender) + { + if (d->has_brush && d->has_pen) { + for (int i = 0; i < rectCount; ++i) { + QRect r(rects[i]); + if (d->txop == QTransform::TxTranslate) + r.translate(offset); + + if (r.width() == 0 || r.height() == 0) { + const QLine l = clipStraightLine(clip, QLine(r.left(), r.top(), r.left() + r.width(), r.top() + r.height())); + XDrawLine(d->dpy, d->hd, d->gc, l.p1().x(), l.p1().y(), l.p2().x(), l.p2().y()); + continue; + } + + r = r.intersected(clip); + if (r.isEmpty()) + continue; + d->setupAdaptedOrigin(r.topLeft()); + XFillRectangle(d->dpy, d->hd, d->gc_brush, r.x(), r.y(), r.width(), r.height()); + XDrawRectangle(d->dpy, d->hd, d->gc, r.x(), r.y(), r.width(), r.height()); + } + d->resetAdaptedOrigin(); + } else { + QVarLengthArray<XRectangle> xrects(rectCount); + int numClipped = rectCount; + for (int i = 0; i < rectCount; ++i) { + QRect r(rects[i]); + if (d->txop == QTransform::TxTranslate) + r.translate(offset); + + if (r.width() == 0 || r.height() == 0) { + --numClipped; + if (d->has_pen) { + const QLine l = clipStraightLine(clip, QLine(r.left(), r.top(), r.left() + r.width(), r.top() + r.height())); + XDrawLine(d->dpy, d->hd, d->gc, l.p1().x(), l.p1().y(), l.p2().x(), l.p2().y()); + } + continue; + } + + r = r.intersected(clip); + if (r.isEmpty()) { + --numClipped; + continue; + } + xrects[i].x = short(r.x()); + xrects[i].y = short(r.y()); + xrects[i].width = ushort(r.width()); + xrects[i].height = ushort(r.height()); + } + if (numClipped) { + d->setupAdaptedOrigin(rects[0].topLeft()); + if (d->has_brush) + XFillRectangles(d->dpy, d->hd, d->gc_brush, xrects.data(), numClipped); + else if (d->has_pen) + XDrawRectangles(d->dpy, d->hd, d->gc, xrects.data(), numClipped); + d->resetAdaptedOrigin(); + } + } + } +} + +static inline void setCapStyle(int cap_style, GC gc) +{ + ulong mask = GCCapStyle; + XGCValues vals; + vals.cap_style = cap_style; + XChangeGC(QXcbX11Info::display(), gc, mask, &vals); +} + +void QX11PaintEngine::drawPoints(const QPoint *points, int pointCount) +{ + Q_ASSERT(points); + Q_ASSERT(pointCount); + Q_D(QX11PaintEngine); + + if (!d->has_pen) + return; + + // use the same test here as in drawPath to ensure that we don't use the path fallback + // and end up in XDrawLines for pens with width <= 1 + if (d->cpen.widthF() > 1.0f + || (X11->use_xrender && (d->has_alpha_pen || (d->render_hints & QPainter::Antialiasing))) + || (!d->isCosmeticPen() && d->txop > QTransform::TxTranslate)) + { + Qt::PenCapStyle capStyle = d->cpen.capStyle(); + if (capStyle == Qt::FlatCap) { + setCapStyle(CapProjecting, d->gc); + d->cpen.setCapStyle(Qt::SquareCap); + } + const QPoint *end = points + pointCount; + while (points < end) { + QPainterPath path; + path.moveTo(*points); + path.lineTo(points->x()+.005, points->y()); + drawPath(path); + ++points; + } + + if (capStyle == Qt::FlatCap) { + setCapStyle(CapButt, d->gc); + d->cpen.setCapStyle(capStyle); + } + return; + } + + static const int BUF_SIZE = 1024; + XPoint xPoints[BUF_SIZE]; + int i = 0, j = 0; + while (i < pointCount) { + while (i < pointCount && j < BUF_SIZE) { + const QPoint &xformed = d->matrix.map(points[i]); + int x = xformed.x(); + int y = xformed.y(); + if (x >= SHRT_MIN && y >= SHRT_MIN && x < SHRT_MAX && y < SHRT_MAX) { + xPoints[j].x = x; + xPoints[j].y = y; + ++j; + } + ++i; + } + if (j) + XDrawPoints(d->dpy, d->hd, d->gc, xPoints, j, CoordModeOrigin); + + j = 0; + } +} + +void QX11PaintEngine::drawPoints(const QPointF *points, int pointCount) +{ + Q_ASSERT(points); + Q_ASSERT(pointCount); + Q_D(QX11PaintEngine); + + if (!d->has_pen) + return; + + // use the same test here as in drawPath to ensure that we don't use the path fallback + // and end up in XDrawLines for pens with width <= 1 + if (d->cpen.widthF() > 1.0f + || (X11->use_xrender && (d->has_alpha_pen || (d->render_hints & QPainter::Antialiasing))) + || (!d->isCosmeticPen() && d->txop > QTransform::TxTranslate)) + { + Qt::PenCapStyle capStyle = d->cpen.capStyle(); + if (capStyle == Qt::FlatCap) { + setCapStyle(CapProjecting, d->gc); + d->cpen.setCapStyle(Qt::SquareCap); + } + + const QPointF *end = points + pointCount; + while (points < end) { + QPainterPath path; + path.moveTo(*points); + path.lineTo(points->x() + 0.005, points->y()); + drawPath(path); + ++points; + } + if (capStyle == Qt::FlatCap) { + setCapStyle(CapButt, d->gc); + d->cpen.setCapStyle(capStyle); + } + return; + } + + static const int BUF_SIZE = 1024; + XPoint xPoints[BUF_SIZE]; + int i = 0, j = 0; + while (i < pointCount) { + while (i < pointCount && j < BUF_SIZE) { + const QPointF &xformed = d->matrix.map(points[i]); + int x = qFloor(xformed.x()); + int y = qFloor(xformed.y()); + + if (x >= SHRT_MIN && y >= SHRT_MIN && x < SHRT_MAX && y < SHRT_MAX) { + xPoints[j].x = x; + xPoints[j].y = y; + ++j; + } + ++i; + } + if (j) + XDrawPoints(d->dpy, d->hd, d->gc, xPoints, j, CoordModeOrigin); + + j = 0; + } +} + +QPainter::RenderHints QX11PaintEngine::supportedRenderHints() const +{ +#if QT_CONFIG(xrender) + if (X11->use_xrender) + return QPainter::Antialiasing; +#endif + return QFlag(0); +} + +void QX11PaintEngine::updateState(const QPaintEngineState &state) +{ + Q_D(QX11PaintEngine); + QPaintEngine::DirtyFlags flags = state.state(); + + + if (flags & DirtyOpacity) { + d->opacity = state.opacity(); + // Force update pen/brush as to get proper alpha colors propagated + flags |= DirtyPen; + flags |= DirtyBrush; + } + + if (flags & DirtyTransform) updateMatrix(state.transform()); + if (flags & DirtyPen) updatePen(state.pen()); + if (flags & (DirtyBrush | DirtyBrushOrigin)) updateBrush(state.brush(), state.brushOrigin()); + if (flags & DirtyFont) updateFont(state.font()); + + if (state.state() & DirtyClipEnabled) { + if (state.isClipEnabled()) { + QPolygonF clip_poly_dev(d->matrix.map(painter()->clipPath().toFillPolygon())); + QPolygonF clipped_poly_dev; + d->clipPolygon_dev(clip_poly_dev, &clipped_poly_dev); + updateClipRegion_dev(QRegion(clipped_poly_dev.toPolygon()), Qt::ReplaceClip); + } else { + updateClipRegion_dev(QRegion(), Qt::NoClip); + } + } + + if (flags & DirtyClipPath) { + QPolygonF clip_poly_dev(d->matrix.map(state.clipPath().toFillPolygon())); + QPolygonF clipped_poly_dev; + d->clipPolygon_dev(clip_poly_dev, &clipped_poly_dev); + updateClipRegion_dev(QRegion(clipped_poly_dev.toPolygon(), state.clipPath().fillRule()), + state.clipOperation()); + } else if (flags & DirtyClipRegion) { + extern QPainterPath qt_regionToPath(const QRegion ®ion); + QPainterPath clip_path = qt_regionToPath(state.clipRegion()); + QPolygonF clip_poly_dev(d->matrix.map(clip_path.toFillPolygon())); + QPolygonF clipped_poly_dev; + d->clipPolygon_dev(clip_poly_dev, &clipped_poly_dev); + updateClipRegion_dev(QRegion(clipped_poly_dev.toPolygon()), state.clipOperation()); + } + if (flags & DirtyHints) updateRenderHints(state.renderHints()); + if (flags & DirtyCompositionMode) { + int function = GXcopy; + if (state.compositionMode() >= QPainter::RasterOp_SourceOrDestination) { + switch (state.compositionMode()) { + case QPainter::RasterOp_SourceOrDestination: + function = GXor; + break; + case QPainter::RasterOp_SourceAndDestination: + function = GXand; + break; + case QPainter::RasterOp_SourceXorDestination: + function = GXxor; + break; + case QPainter::RasterOp_NotSourceAndNotDestination: + function = GXnor; + break; + case QPainter::RasterOp_NotSourceOrNotDestination: + function = GXnand; + break; + case QPainter::RasterOp_NotSourceXorDestination: + function = GXequiv; + break; + case QPainter::RasterOp_NotSource: + function = GXcopyInverted; + break; + case QPainter::RasterOp_SourceAndNotDestination: + function = GXandReverse; + break; + case QPainter::RasterOp_NotSourceAndDestination: + function = GXandInverted; + break; + default: + function = GXcopy; + } + } +#if QT_CONFIG(xrender) + else { + d->composition_mode = + qpainterOpToXrender(state.compositionMode()); + } +#endif + XSetFunction(X11->display, d->gc, function); + XSetFunction(X11->display, d->gc_brush, function); + } + d->decidePathFallback(); + d->decideCoordAdjust(); +} + +void QX11PaintEngine::updateRenderHints(QPainter::RenderHints hints) +{ + Q_D(QX11PaintEngine); + d->render_hints = hints; + +#if QT_CONFIG(xrender) + if (X11->use_xrender && d->picture) { + XRenderPictureAttributes attrs; + attrs.poly_edge = (hints & QPainter::Antialiasing) ? PolyEdgeSmooth : PolyEdgeSharp; + XRenderChangePicture(d->dpy, d->picture, CPPolyEdge, &attrs); + } +#endif +} + +void QX11PaintEngine::updatePen(const QPen &pen) +{ + Q_D(QX11PaintEngine); + d->cpen = pen; + int cp = CapButt; + int jn = JoinMiter; + int ps = pen.style(); + + if (d->opacity < 1.0) { + QColor c = d->cpen.color(); + c.setAlpha(qRound(c.alpha()*d->opacity)); + d->cpen.setColor(c); + } + + d->has_pen = (ps != Qt::NoPen); + d->has_alpha_pen = (pen.color().alpha() != 255); + + switch (pen.capStyle()) { + case Qt::SquareCap: + cp = CapProjecting; + break; + case Qt::RoundCap: + cp = CapRound; + break; + case Qt::FlatCap: + default: + cp = CapButt; + break; + } + switch (pen.joinStyle()) { + case Qt::BevelJoin: + jn = JoinBevel; + break; + case Qt::RoundJoin: + jn = JoinRound; + break; + case Qt::MiterJoin: + default: + jn = JoinMiter; + break; + } + + d->adapted_pen_origin = false; + + char dashes[10]; // custom pen dashes + int dash_len = 0; // length of dash list + int xStyle = LineSolid; + + /* + We are emulating Windows here. Windows treats cpen.width() == 1 + (or 0) as a very special case. The fudge variable unifies this + case with the general case. + */ + qreal pen_width = pen.widthF(); + int scale = qRound(pen_width < 1 ? 1 : pen_width); + int space = (pen_width < 1 && pen_width > 0 ? 1 : (2 * scale)); + int dot = 1 * scale; + int dash = 4 * scale; + + d->has_custom_pen = false; + + switch (ps) { + case Qt::NoPen: + case Qt::SolidLine: + xStyle = LineSolid; + break; + case Qt::DashLine: + dashes[0] = dash; + dashes[1] = space; + dash_len = 2; + xStyle = LineOnOffDash; + break; + case Qt::DotLine: + dashes[0] = dot; + dashes[1] = space; + dash_len = 2; + xStyle = LineOnOffDash; + break; + case Qt::DashDotLine: + dashes[0] = dash; + dashes[1] = space; + dashes[2] = dot; + dashes[3] = space; + dash_len = 4; + xStyle = LineOnOffDash; + break; + case Qt::DashDotDotLine: + dashes[0] = dash; + dashes[1] = space; + dashes[2] = dot; + dashes[3] = space; + dashes[4] = dot; + dashes[5] = space; + dash_len = 6; + xStyle = LineOnOffDash; + break; + case Qt::CustomDashLine: + d->has_custom_pen = true; + break; + } + + ulong mask = GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth + | GCCapStyle | GCJoinStyle | GCLineStyle; + XGCValues vals; + vals.graphics_exposures = false; + if (d->pdev_depth == 1) { + vals.foreground = qGray(pen.color().rgb()) > 127 ? 0 : 1; + vals.background = qGray(QColor(Qt::transparent).rgb()) > 127 ? 0 : 1; + } else if (d->pdev->devType() == QInternal::Pixmap && d->pdev_depth == 32 + && X11->use_xrender) { + vals.foreground = pen.color().rgba(); + vals.background = QColor(Qt::transparent).rgba(); + } else { + QXcbColormap cmap = QXcbColormap::instance(d->scrn); + vals.foreground = cmap.pixel(pen.color()); + vals.background = cmap.pixel(QColor(Qt::transparent)); + } + + + vals.line_width = qRound(pen.widthF()); + vals.cap_style = cp; + vals.join_style = jn; + vals.line_style = xStyle; + + XChangeGC(d->dpy, d->gc, mask, &vals); + + if (dash_len) { // make dash list + XSetDashes(d->dpy, d->gc, 0, dashes, dash_len); + } + + if (!d->has_clipping) { // if clipping is set the paintevent clip region is merged with the clip region + QRegion sysClip = systemClip(); + if (!sysClip.isEmpty()) + x11SetClipRegion(d->dpy, d->gc, 0, d->picture, sysClip); + else + x11ClearClipRegion(d->dpy, d->gc, 0, d->picture); + } +} + +void QX11PaintEngine::updateBrush(const QBrush &brush, const QPointF &origin) +{ + Q_D(QX11PaintEngine); + d->cbrush = brush; + d->bg_origin = origin; + d->adapted_brush_origin = false; +#if QT_CONFIG(xrender) + d->current_brush = 0; +#endif + if (d->opacity < 1.0) { + QColor c = d->cbrush.color(); + c.setAlpha(qRound(c.alpha()*d->opacity)); + d->cbrush.setColor(c); + } + + int s = FillSolid; + int bs = d->cbrush.style(); + d->has_brush = (bs != Qt::NoBrush); + d->has_pattern = bs >= Qt::Dense1Pattern && bs <= Qt::DiagCrossPattern; + d->has_texture = bs == Qt::TexturePattern; + d->has_alpha_brush = brush.color().alpha() != 255; + d->has_alpha_texture = d->has_texture && d->cbrush.texture().hasAlphaChannel(); + + ulong mask = GCForeground | GCBackground | GCGraphicsExposures + | GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle; + XGCValues vals; + vals.graphics_exposures = false; + if (d->pdev_depth == 1) { + vals.foreground = qGray(d->cbrush.color().rgb()) > 127 ? 0 : 1; + vals.background = qGray(QColor(Qt::transparent).rgb()) > 127 ? 0 : 1; + } else if (X11->use_xrender && d->pdev->devType() == QInternal::Pixmap + && d->pdev_depth == 32) { + vals.foreground = d->cbrush.color().rgba(); + vals.background = QColor(Qt::transparent).rgba(); + } else { + QXcbColormap cmap = QXcbColormap::instance(d->scrn); + vals.foreground = cmap.pixel(d->cbrush.color()); + vals.background = cmap.pixel(QColor(Qt::transparent)); + + if (!X11->use_xrender && d->has_brush && !d->has_pattern && !brush.isOpaque()) { + QPixmap pattern = qt_patternForAlpha(brush.color().alpha(), d->scrn); + mask |= GCStipple; + vals.stipple = qt_x11PixmapHandle(pattern); + s = FillStippled; + d->adapted_brush_origin = true; + } + } + vals.cap_style = CapButt; + vals.join_style = JoinMiter; + vals.line_style = LineSolid; + + if (d->has_pattern || d->has_texture) { + if (bs == Qt::TexturePattern) { + d->brush_pm = qt_toX11Pixmap(d->cbrush.texture()); +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + XRenderPictureAttributes attrs; + attrs.repeat = true; + XRenderChangePicture(d->dpy, qt_x11PictureHandle(d->brush_pm), CPRepeat, &attrs); + QX11PlatformPixmap *data = static_cast<QX11PlatformPixmap*>(d->brush_pm.handle()); + if (data->mask_picture) + XRenderChangePicture(d->dpy, data->mask_picture, CPRepeat, &attrs); + } +#endif + } else { + d->brush_pm = qt_toX11Pixmap(qt_pixmapForBrush(bs, true)); + } + qt_x11SetScreen(d->brush_pm, d->scrn); + if (d->brush_pm.depth() == 1) { + mask |= GCStipple; + vals.stipple = qt_x11PixmapHandle(d->brush_pm); + s = FillStippled; +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + d->bitmap_texture = QPixmap(d->brush_pm.size()); + d->bitmap_texture.fill(Qt::transparent); + d->bitmap_texture = qt_toX11Pixmap(d->bitmap_texture); + qt_x11SetScreen(d->bitmap_texture, d->scrn); + + ::Picture src = X11->getSolidFill(d->scrn, d->cbrush.color()); + XRenderComposite(d->dpy, PictOpSrc, src, qt_x11PictureHandle(d->brush_pm), + qt_x11PictureHandle(d->bitmap_texture), + 0, 0, d->brush_pm.width(), d->brush_pm.height(), + 0, 0, d->brush_pm.width(), d->brush_pm.height()); + + XRenderPictureAttributes attrs; + attrs.repeat = true; + XRenderChangePicture(d->dpy, qt_x11PictureHandle(d->bitmap_texture), CPRepeat, &attrs); + + d->current_brush = qt_x11PictureHandle(d->bitmap_texture); + } +#endif + } else { + mask |= GCTile; +#if QT_CONFIG(xrender) + if (d->pdev_depth == 32 && d->brush_pm.depth() != 32) { + d->brush_pm.detach(); + QX11PlatformPixmap *brushData = static_cast<QX11PlatformPixmap*>(d->brush_pm.handle()); + brushData->convertToARGB32(); + } +#endif + vals.tile = (d->brush_pm.depth() == d->pdev_depth + ? qt_x11PixmapHandle(d->brush_pm) + : static_cast<QX11PlatformPixmap*>(d->brush_pm.handle())->x11ConvertToDefaultDepth()); + s = FillTiled; +#if QT_CONFIG(xrender) + d->current_brush = qt_x11PictureHandle(d->cbrush.texture()); +#endif + } + + mask |= GCTileStipXOrigin | GCTileStipYOrigin; + vals.ts_x_origin = qRound(origin.x()); + vals.ts_y_origin = qRound(origin.y()); + } +#if QT_CONFIG(xrender) + else if (d->has_alpha_brush) { + d->current_brush = X11->getSolidFill(d->scrn, d->cbrush.color()); + } +#endif + + vals.fill_style = s; + XChangeGC(d->dpy, d->gc_brush, mask, &vals); + if (!d->has_clipping) { + QRegion sysClip = systemClip(); + if (!sysClip.isEmpty()) + x11SetClipRegion(d->dpy, d->gc_brush, 0, d->picture, sysClip); + else + x11ClearClipRegion(d->dpy, d->gc_brush, 0, d->picture); + } +} + +void QX11PaintEngine::drawEllipse(const QRectF &rect) +{ + QRect aligned = rect.toAlignedRect(); + if (aligned == rect) + drawEllipse(aligned); + else + QPaintEngine::drawEllipse(rect); +} + +void QX11PaintEngine::drawEllipse(const QRect &rect) +{ + if (rect.isEmpty()) { + drawRects(&rect, 1); + return; + } + + Q_D(QX11PaintEngine); + QRect devclip(SHRT_MIN, SHRT_MIN, SHRT_MAX*2 - 1, SHRT_MAX*2 - 1); + QRect r(rect); + if (d->txop < QTransform::TxRotate) { + r = d->matrix.mapRect(rect); + } else if (d->txop == QTransform::TxRotate && rect.width() == rect.height()) { + QPainterPath path; + path.addEllipse(rect); + r = d->matrix.map(path).boundingRect().toRect(); + } + + if (d->has_alpha_brush || d->has_alpha_pen || d->has_custom_pen || (d->render_hints & QPainter::Antialiasing) + || d->has_alpha_texture || devclip.intersected(r) != r + || (d->has_complex_xform + && !(d->has_non_scaling_xform && rect.width() == rect.height()))) + { + QPainterPath path; + path.addEllipse(rect); + drawPath(path); + return; + } + + int x = r.x(); + int y = r.y(); + int w = r.width(); + int h = r.height(); + if (w < 1 || h < 1) + return; + if (w == 1 && h == 1) { + XDrawPoint(d->dpy, d->hd, d->has_pen ? d->gc : d->gc_brush, x, y); + return; + } + d->setupAdaptedOrigin(rect.topLeft()); + if (d->has_brush) { // draw filled ellipse + XFillArc(d->dpy, d->hd, d->gc_brush, x, y, w, h, 0, 360*64); + if (!d->has_pen) // make smoother outline + XDrawArc(d->dpy, d->hd, d->gc_brush, x, y, w-1, h-1, 0, 360*64); + } + if (d->has_pen) // draw outline + XDrawArc(d->dpy, d->hd, d->gc, x, y, w, h, 0, 360*64); + d->resetAdaptedOrigin(); +} + + + +void QX11PaintEnginePrivate::fillPolygon_translated(const QPointF *polygonPoints, int pointCount, + QX11PaintEnginePrivate::GCMode gcMode, + QPaintEngine::PolygonDrawMode mode) +{ + + QVarLengthArray<QPointF> translated_points(pointCount); + QPointF offset(matrix.dx(), matrix.dy()); + + qreal offs = adjust_coords ? aliasedCoordinateDelta : 0.0; + if (!X11->use_xrender || !(render_hints & QPainter::Antialiasing)) + offset += QPointF(aliasedCoordinateDelta, aliasedCoordinateDelta); + + for (int i = 0; i < pointCount; ++i) { + translated_points[i] = polygonPoints[i] + offset; + + translated_points[i].rx() = qRound(translated_points[i].x()) + offs; + translated_points[i].ry() = qRound(translated_points[i].y()) + offs; + } + + fillPolygon_dev(translated_points.data(), pointCount, gcMode, mode); +} + +#if QT_CONFIG(xrender) +static void qt_XRenderCompositeTrapezoids(Display *dpy, + int op, + Picture src, + Picture dst, + _Xconst XRenderPictFormat *maskFormat, + int xSrc, + int ySrc, + const XTrapezoid *traps, int size) +{ + const int MAX_TRAPS = 50000; + while (size) { + int to_draw = size; + if (to_draw > MAX_TRAPS) + to_draw = MAX_TRAPS; + XRenderCompositeTrapezoids(dpy, op, src, dst, + maskFormat, + xSrc, ySrc, + traps, to_draw); + size -= to_draw; + traps += to_draw; + } +} +#endif + +void QX11PaintEnginePrivate::fillPolygon_dev(const QPointF *polygonPoints, int pointCount, + QX11PaintEnginePrivate::GCMode gcMode, + QPaintEngine::PolygonDrawMode mode) +{ + Q_Q(QX11PaintEngine); + + int clippedCount = 0; + qt_float_point *clippedPoints = 0; + +#if QT_CONFIG(xrender) + //can change if we switch to pen if gcMode != BrushGC + bool has_fill_texture = has_texture; + bool has_fill_pattern = has_pattern; + ::Picture src; +#endif + QBrush fill; + GC fill_gc; + if (gcMode == BrushGC) { + fill = cbrush; + fill_gc = gc_brush; +#if QT_CONFIG(xrender) + if (current_brush) + src = current_brush; + else + src = X11->getSolidFill(scrn, fill.color()); +#endif + } else { + fill = QBrush(cpen.brush()); + fill_gc = gc; +#if QT_CONFIG(xrender) + //we use the pens brush + has_fill_texture = (fill.style() == Qt::TexturePattern); + has_fill_pattern = (fill.style() >= Qt::Dense1Pattern && fill.style() <= Qt::DiagCrossPattern); + if (has_fill_texture) + src = qt_x11PictureHandle(fill.texture()); + else if (has_fill_pattern) + src = getPatternFill(scrn, fill); + else + src = X11->getSolidFill(scrn, fill.color()); +#endif + } + + polygonClipper.clipPolygon((qt_float_point *) polygonPoints, pointCount, + &clippedPoints, &clippedCount); + +#if QT_CONFIG(xrender) + bool solid_fill = fill.color().alpha() == 255; + if (has_fill_texture && fill.texture().depth() == 1 && solid_fill) { + has_fill_texture = false; + has_fill_pattern = true; + } + + bool antialias = render_hints & QPainter::Antialiasing; + + if (X11->use_xrender + && picture + && !has_fill_pattern + && (clippedCount > 0) + && (fill.style() != Qt::NoBrush) + && ((has_fill_texture && fill.texture().hasAlpha()) || antialias || !solid_fill || has_alpha_pen != has_alpha_brush)) + { + tessellator->tessellate((QPointF *)clippedPoints, clippedCount, + mode == QPaintEngine::WindingMode); + if (tessellator->size > 0) { + XRenderPictureAttributes attrs; + attrs.poly_edge = antialias ? PolyEdgeSmooth : PolyEdgeSharp; + XRenderChangePicture(dpy, picture, CPPolyEdge, &attrs); + int x_offset = int(XFixedToDouble(tessellator->traps[0].left.p1.x) - bg_origin.x()); + int y_offset = int(XFixedToDouble(tessellator->traps[0].left.p1.y) - bg_origin.y()); + qt_XRenderCompositeTrapezoids(dpy, composition_mode, src, picture, + antialias + ? XRenderFindStandardFormat(dpy, PictStandardA8) + : XRenderFindStandardFormat(dpy, PictStandardA1), + x_offset, y_offset, + tessellator->traps, tessellator->size); + tessellator->done(); + } + } else +#endif + if (fill.style() != Qt::NoBrush) { + if (clippedCount > 200000) { + QPolygon poly; + for (int i = 0; i < clippedCount; ++i) + poly << QPoint(qFloor(clippedPoints[i].x), qFloor(clippedPoints[i].y)); + + const QRect bounds = poly.boundingRect(); + const QRect aligned = bounds + & QRect(QPoint(), QSize(pdev->width(), pdev->height())); + + QImage img(aligned.size(), QImage::Format_ARGB32_Premultiplied); + img.fill(0); + + QPainter painter(&img); + painter.translate(-aligned.x(), -aligned.y()); + painter.setPen(Qt::NoPen); + painter.setBrush(fill); + if (gcMode == BrushGC) + painter.setBrushOrigin(q->painter()->brushOrigin()); + painter.drawPolygon(poly); + painter.end(); + + q->drawImage(aligned, img, img.rect(), Qt::AutoColor); + } else if (clippedCount > 0) { + QVarLengthArray<XPoint> xpoints(clippedCount); + for (int i = 0; i < clippedCount; ++i) { + xpoints[i].x = qFloor(clippedPoints[i].x); + xpoints[i].y = qFloor(clippedPoints[i].y); + } + if (mode == QPaintEngine::WindingMode) + XSetFillRule(dpy, fill_gc, WindingRule); + setupAdaptedOrigin(QPoint(xpoints[0].x, xpoints[0].y)); + XFillPolygon(dpy, hd, fill_gc, + xpoints.data(), clippedCount, + mode == QPaintEngine::ConvexMode ? Convex : Complex, CoordModeOrigin); + resetAdaptedOrigin(); + if (mode == QPaintEngine::WindingMode) + XSetFillRule(dpy, fill_gc, EvenOddRule); + } + } +} + +void QX11PaintEnginePrivate::strokePolygon_translated(const QPointF *polygonPoints, int pointCount, bool close) +{ + QVarLengthArray<QPointF> translated_points(pointCount); + QPointF offset(matrix.dx(), matrix.dy()); + for (int i = 0; i < pointCount; ++i) + translated_points[i] = polygonPoints[i] + offset; + strokePolygon_dev(translated_points.data(), pointCount, close); +} + +void QX11PaintEnginePrivate::strokePolygon_dev(const QPointF *polygonPoints, int pointCount, bool close) +{ + int clippedCount = 0; + qt_float_point *clippedPoints = 0; + polygonClipper.clipPolygon((qt_float_point *) polygonPoints, pointCount, + &clippedPoints, &clippedCount, close); + + if (clippedCount > 0) { + QVarLengthArray<XPoint> xpoints(clippedCount); + for (int i = 0; i < clippedCount; ++i) { + xpoints[i].x = qRound(clippedPoints[i].x + aliasedCoordinateDelta); + xpoints[i].y = qRound(clippedPoints[i].y + aliasedCoordinateDelta); + } + uint numberPoints = qMin(clippedCount, xlibMaxLinePoints); + XPoint *pts = xpoints.data(); + XDrawLines(dpy, hd, gc, pts, numberPoints, CoordModeOrigin); + pts += numberPoints; + clippedCount -= numberPoints; + numberPoints = qMin(clippedCount, xlibMaxLinePoints-1); + while (clippedCount) { + XDrawLines(dpy, hd, gc, pts-1, numberPoints+1, CoordModeOrigin); + pts += numberPoints; + clippedCount -= numberPoints; + numberPoints = qMin(clippedCount, xlibMaxLinePoints-1); + } + } +} + +void QX11PaintEngine::drawPolygon(const QPointF *polygonPoints, int pointCount, PolygonDrawMode mode) +{ + Q_D(QX11PaintEngine); + + if (d->use_path_fallback) { + QPainterPath path(polygonPoints[0]); + for (int i = 1; i < pointCount; ++i) + path.lineTo(polygonPoints[i]); + if (mode == PolylineMode) { + QBrush oldBrush = d->cbrush; + d->cbrush = QBrush(Qt::NoBrush); + path.setFillRule(Qt::WindingFill); + drawPath(path); + d->cbrush = oldBrush; + } else { + path.setFillRule(mode == OddEvenMode ? Qt::OddEvenFill : Qt::WindingFill); + path.closeSubpath(); + drawPath(path); + } + return; + } + if (mode != PolylineMode && d->has_brush) + d->fillPolygon_translated(polygonPoints, pointCount, QX11PaintEnginePrivate::BrushGC, mode); + + if (d->has_pen) + d->strokePolygon_translated(polygonPoints, pointCount, mode != PolylineMode); +} + + +void QX11PaintEnginePrivate::fillPath(const QPainterPath &path, QX11PaintEnginePrivate::GCMode gc_mode, bool transform) +{ + qreal offs = adjust_coords ? aliasedCoordinateDelta : 0.0; + + QPainterPath clippedPath; + QPainterPath clipPath; + clipPath.addRect(polygonClipper.boundingRect()); + + if (transform) + clippedPath = (path*matrix).intersected(clipPath); + else + clippedPath = path.intersected(clipPath); + + QList<QPolygonF> polys = clippedPath.toFillPolygons(); + for (int i = 0; i < polys.size(); ++i) { + QVarLengthArray<QPointF> translated_points(polys.at(i).size()); + + for (int j = 0; j < polys.at(i).size(); ++j) { + translated_points[j] = polys.at(i).at(j); + if (!X11->use_xrender || !(render_hints & QPainter::Antialiasing)) { + translated_points[j].rx() = qRound(translated_points[j].rx() + aliasedCoordinateDelta) + offs; + translated_points[j].ry() = qRound(translated_points[j].ry() + aliasedCoordinateDelta) + offs; + } + } + + fillPolygon_dev(translated_points.data(), polys.at(i).size(), gc_mode, + path.fillRule() == Qt::OddEvenFill ? QPaintEngine::OddEvenMode : QPaintEngine::WindingMode); + } +} + +void QX11PaintEngine::drawPath(const QPainterPath &path) +{ + Q_D(QX11PaintEngine); + if (path.isEmpty()) + return; + + if (d->has_brush) + d->fillPath(path, QX11PaintEnginePrivate::BrushGC, true); + if (d->has_pen + && ((X11->use_xrender && (d->has_alpha_pen || (d->render_hints & QPainter::Antialiasing))) + || (!d->isCosmeticPen() && d->txop > QTransform::TxTranslate + && !d->has_non_scaling_xform) + || (d->cpen.style() == Qt::CustomDashLine))) { + QPainterPathStroker stroker; + if (d->cpen.style() == Qt::CustomDashLine) { + stroker.setDashPattern(d->cpen.dashPattern()); + stroker.setDashOffset(d->cpen.dashOffset()); + } else { + stroker.setDashPattern(d->cpen.style()); + } + stroker.setCapStyle(d->cpen.capStyle()); + stroker.setJoinStyle(d->cpen.joinStyle()); + QPainterPath stroke; + qreal width = d->cpen.widthF(); + QPolygonF poly; + QRectF deviceRect(0, 0, d->pdev->width(), d->pdev->height()); + // necessary to get aliased alphablended primitives to be drawn correctly + if (d->isCosmeticPen() || d->has_scaling_xform) { + if (d->isCosmeticPen()) + stroker.setWidth(width == 0 ? 1 : width); + else + stroker.setWidth(width * d->xform_scale); + stroker.d_ptr->stroker.setClipRect(deviceRect); + stroke = stroker.createStroke(path * d->matrix); + if (stroke.isEmpty()) + return; + stroke.setFillRule(Qt::WindingFill); + d->fillPath(stroke, QX11PaintEnginePrivate::PenGC, false); + } else { + stroker.setWidth(width); + stroker.d_ptr->stroker.setClipRect(d->matrix.inverted().mapRect(deviceRect)); + stroke = stroker.createStroke(path); + if (stroke.isEmpty()) + return; + stroke.setFillRule(Qt::WindingFill); + d->fillPath(stroke, QX11PaintEnginePrivate::PenGC, true); + } + } else if (d->has_pen) { + // if we have a cosmetic pen - use XDrawLine() for speed + QList<QPolygonF> polys = path.toSubpathPolygons(d->matrix); + for (int i = 0; i < polys.size(); ++i) + d->strokePolygon_dev(polys.at(i).data(), polys.at(i).size(), false); + } +} + +Q_GUI_EXPORT void qt_x11_drawImage(const QRect &rect, const QPoint &pos, const QImage &image, + Drawable hd, GC gc, Display *dpy, Visual *visual, int depth) +{ + Q_ASSERT(image.format() == QImage::Format_RGB32); + Q_ASSERT(image.depth() == 32); + + XImage *xi; + // Note: this code assumes either RGB or BGR, 8 bpc server layouts + const uint red_mask = (uint) visual->red_mask; + bool bgr_layout = (red_mask == 0xff); + + const int w = rect.width(); + const int h = rect.height(); + + QImage im; + int image_byte_order = ImageByteOrder(QXcbX11Info::display()); + if ((QSysInfo::ByteOrder == QSysInfo::BigEndian && ((image_byte_order == LSBFirst) || bgr_layout)) + || (image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian) + || (image_byte_order == LSBFirst && bgr_layout)) + { + im = image.copy(rect); + const int iw = im.bytesPerLine() / 4; + uint *data = (uint *)im.bits(); + for (int i=0; i < h; i++) { + uint *p = data; + uint *end = p + w; + if (bgr_layout && image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian) { + while (p < end) { + *p = ((*p << 8) & 0xffffff00) | ((*p >> 24) & 0x000000ff); + p++; + } + } else if ((image_byte_order == LSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) + || (image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) { + while (p < end) { + *p = ((*p << 24) & 0xff000000) | ((*p << 8) & 0x00ff0000) + | ((*p >> 8) & 0x0000ff00) | ((*p >> 24) & 0x000000ff); + p++; + } + } else if ((image_byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) + || (image_byte_order == LSBFirst && bgr_layout)) + { + while (p < end) { + *p = ((*p << 16) & 0x00ff0000) | ((*p >> 16) & 0x000000ff) + | ((*p ) & 0xff00ff00); + p++; + } + } + data += iw; + } + xi = XCreateImage(dpy, visual, depth, ZPixmap, + 0, (char *) im.bits(), w, h, 32, im.bytesPerLine()); + } else { + xi = XCreateImage(dpy, visual, depth, ZPixmap, + 0, (char *) image.scanLine(rect.y())+rect.x()*sizeof(uint), w, h, 32, image.bytesPerLine()); + } + XPutImage(dpy, hd, gc, xi, 0, 0, pos.x(), pos.y(), w, h); + xi->data = 0; // QImage owns these bits + XDestroyImage(xi); +} + +void QX11PaintEngine::drawImage(const QRectF &r, const QImage &image, const QRectF &sr, Qt::ImageConversionFlags flags) +{ + Q_D(QX11PaintEngine); + + if (image.format() == QImage::Format_RGB32 + && d->pdev_depth >= 24 && image.depth() == 32 + && r.size() == sr.size()) + { + int sx = qRound(sr.x()); + int sy = qRound(sr.y()); + int x = qRound(r.x()); + int y = qRound(r.y()); + int w = qRound(r.width()); + int h = qRound(r.height()); + + qt_x11_drawImage(QRect(sx, sy, w, h), QPoint(x, y), image, d->hd, d->gc, d->dpy, + (Visual *)d->xinfo->visual(), d->pdev_depth); + } else { + QPaintEngine::drawImage(r, image, sr, flags); + } +} + +void QX11PaintEngine::drawPixmap(const QRectF &r, const QPixmap &px, const QRectF &_sr) +{ + Q_D(QX11PaintEngine); + QRectF sr = _sr; + int x = qRound(r.x()); + int y = qRound(r.y()); + int sx = qRound(sr.x()); + int sy = qRound(sr.y()); + int sw = qRound(sr.width()); + int sh = qRound(sr.height()); + + QPixmap pixmap = qt_toX11Pixmap(px); + if (pixmap.isNull()) + return; + + if ((d->xinfo && d->xinfo->screen() != qt_x11Info(pixmap).screen()) + || (qt_x11Info(pixmap).screen() != DefaultScreen(QXcbX11Info::display()))) { + qt_x11SetScreen(pixmap, d->xinfo ? d->xinfo->screen() : DefaultScreen(X11->display)); + } + + qt_x11SetDefaultScreen(qt_x11Info(pixmap).screen()); + +#if QT_CONFIG(xrender) + ::Picture src_pict = qt_x11PictureHandle(pixmap); + if (src_pict && d->picture) { + const int pDepth = pixmap.depth(); + if (pDepth == 1 && (d->has_alpha_pen)) { + qt_render_bitmap(d->dpy, d->scrn, src_pict, d->picture, + sx, sy, x, y, sw, sh, d->cpen); + return; + } else if (pDepth != 1 && (pDepth == 32 || pDepth != d->pdev_depth)) { + XRenderComposite(d->dpy, d->composition_mode, + src_pict, 0, d->picture, sx, sy, 0, 0, x, y, sw, sh); + return; + } + } +#endif + + bool mono_src = pixmap.depth() == 1; + bool mono_dst = d->pdev_depth == 1; + bool restore_clip = false; + + if (static_cast<QX11PlatformPixmap*>(pixmap.handle())->x11_mask) { // pixmap has a mask + QBitmap comb(sw, sh); + GC cgc = XCreateGC(d->dpy, qt_x11PixmapHandle(comb), 0, 0); + XSetForeground(d->dpy, cgc, 0); + XFillRectangle(d->dpy, qt_x11PixmapHandle(comb), cgc, 0, 0, sw, sh); + XSetBackground(d->dpy, cgc, 0); + XSetForeground(d->dpy, cgc, 1); + if (!d->crgn.isEmpty()) { + QVector<XRectangle> rects = qt_region_to_xrectangles(d->crgn); + XSetClipRectangles(d->dpy, cgc, -x, -y, rects.data(), rects.size(), Unsorted); + } else if (d->has_clipping) { + XSetClipRectangles(d->dpy, cgc, 0, 0, 0, 0, Unsorted); + } + XSetFillStyle(d->dpy, cgc, FillOpaqueStippled); + XSetTSOrigin(d->dpy, cgc, -sx, -sy); + XSetStipple(d->dpy, cgc, + static_cast<QX11PlatformPixmap*>(pixmap.handle())->x11_mask); + XFillRectangle(d->dpy, qt_x11PixmapHandle(comb), cgc, 0, 0, sw, sh); + XFreeGC(d->dpy, cgc); + + XSetClipOrigin(d->dpy, d->gc, x, y); + XSetClipMask(d->dpy, d->gc, qt_x11PixmapHandle(comb)); + restore_clip = true; + } + + if (mono_src) { + if (!d->crgn.isEmpty()) { + Pixmap comb = XCreatePixmap(d->dpy, d->hd, sw, sh, 1); + GC cgc = XCreateGC(d->dpy, comb, 0, 0); + XSetForeground(d->dpy, cgc, 0); + XFillRectangle(d->dpy, comb, cgc, 0, 0, sw, sh); + QVector<XRectangle> rects = qt_region_to_xrectangles(d->crgn); + XSetClipRectangles(d->dpy, cgc, -x, -y, rects.data(), rects.size(), Unsorted); + XCopyArea(d->dpy, qt_x11PixmapHandle(pixmap), comb, cgc, sx, sy, sw, sh, 0, 0); + XFreeGC(d->dpy, cgc); + + XSetClipMask(d->dpy, d->gc, comb); + XSetClipOrigin(d->dpy, d->gc, x, y); + XFreePixmap(d->dpy, comb); + } else { + XSetClipMask(d->dpy, d->gc, qt_x11PixmapHandle(pixmap)); + XSetClipOrigin(d->dpy, d->gc, x - sx, y - sy); + } + + if (mono_dst) { + XSetForeground(d->dpy, d->gc, qGray(d->cpen.color().rgb()) > 127 ? 0 : 1); + } else { + QXcbColormap cmap = QXcbColormap::instance(d->scrn); + XSetForeground(d->dpy, d->gc, cmap.pixel(d->cpen.color())); + } + XFillRectangle(d->dpy, d->hd, d->gc, x, y, sw, sh); + restore_clip = true; + } else if (mono_dst && !mono_src) { + QBitmap bitmap(pixmap); + XCopyArea(d->dpy, qt_x11PixmapHandle(bitmap), d->hd, d->gc, sx, sy, sw, sh, x, y); + } else { + XCopyArea(d->dpy, qt_x11PixmapHandle(pixmap), d->hd, d->gc, sx, sy, sw, sh, x, y); + } + + if (d->pdev->devType() == QInternal::Pixmap) { + const QPixmap *px = static_cast<const QPixmap*>(d->pdev); + Pixmap src_mask = static_cast<QX11PlatformPixmap*>(pixmap.handle())->x11_mask; + Pixmap dst_mask = static_cast<QX11PlatformPixmap*>(px->handle())->x11_mask; + if (dst_mask) { + GC cgc = XCreateGC(d->dpy, dst_mask, 0, 0); + XSetClipOrigin(d->dpy, cgc, x, y); + XSetClipMask(d->dpy, cgc, src_mask); + if (src_mask) { // copy src mask into dst mask + XCopyArea(d->dpy, src_mask, dst_mask, cgc, sx, sy, sw, sh, x, y); + } else { // no src mask, but make sure the area copied is opaque in dest + XSetBackground(d->dpy, cgc, 0); + XSetForeground(d->dpy, cgc, 1); + XFillRectangle(d->dpy, dst_mask, cgc, x, y, sw, sh); + } + XFreeGC(d->dpy, cgc); + } + } + + if (restore_clip) { + XSetClipOrigin(d->dpy, d->gc, 0, 0); + QVector<XRectangle> rects = qt_region_to_xrectangles(d->crgn); + if (rects.isEmpty()) + XSetClipMask(d->dpy, d->gc, XNone); + else + XSetClipRectangles(d->dpy, d->gc, 0, 0, rects.data(), rects.size(), Unsorted); + } +} + +void QX11PaintEngine::updateMatrix(const QTransform &mtx) +{ + Q_D(QX11PaintEngine); + d->txop = mtx.type(); + d->matrix = mtx; + + d->has_complex_xform = (d->txop > QTransform::TxTranslate); + + extern bool qt_scaleForTransform(const QTransform &transform, qreal *scale); + bool scaling = qt_scaleForTransform(d->matrix, &d->xform_scale); + d->has_scaling_xform = scaling && d->xform_scale != 1.0; + d->has_non_scaling_xform = scaling && d->xform_scale == 1.0; +} + +/* + NB! the clip region is expected to be in dev coordinates +*/ +void QX11PaintEngine::updateClipRegion_dev(const QRegion &clipRegion, Qt::ClipOperation op) +{ + Q_D(QX11PaintEngine); + QRegion sysClip = systemClip(); + if (op == Qt::NoClip) { + d->has_clipping = false; + d->crgn = sysClip; + if (!sysClip.isEmpty()) { + x11SetClipRegion(d->dpy, d->gc, d->gc_brush, d->picture, sysClip); + } else { + x11ClearClipRegion(d->dpy, d->gc, d->gc_brush, d->picture); + } + return; + } + + switch (op) { + case Qt::IntersectClip: + if (d->has_clipping) { + d->crgn &= clipRegion; + break; + } + // fall through + case Qt::ReplaceClip: + if (!sysClip.isEmpty()) + d->crgn = clipRegion.intersected(sysClip); + else + d->crgn = clipRegion; + break; +// case Qt::UniteClip: +// d->crgn |= clipRegion; +// if (!sysClip.isEmpty()) +// d->crgn = d->crgn.intersected(sysClip); +// break; + default: + break; + } + d->has_clipping = true; + x11SetClipRegion(d->dpy, d->gc, d->gc_brush, d->picture, d->crgn); +} + +void QX11PaintEngine::updateFont(const QFont &) +{ +} + +Drawable QX11PaintEngine::handle() const +{ + Q_D(const QX11PaintEngine); + Q_ASSERT(isActive()); + Q_ASSERT(d->hd); + return d->hd; +} + +extern void qt_draw_tile(QPaintEngine *, qreal, qreal, qreal, qreal, const QPixmap &, + qreal, qreal); + +void QX11PaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &p) +{ + int x = qRound(r.x()); + int y = qRound(r.y()); + int w = qRound(r.width()); + int h = qRound(r.height()); + int sx = qRound(p.x()); + int sy = qRound(p.y()); + + bool mono_src = pixmap.depth() == 1; + Q_D(QX11PaintEngine); + + if ((d->xinfo && d->xinfo->screen() != qt_x11Info(pixmap).screen()) + || (qt_x11Info(pixmap).screen() != DefaultScreen(QXcbX11Info::display()))) { + QPixmap* p = const_cast<QPixmap *>(&pixmap); + qt_x11SetScreen(*p, d->xinfo ? d->xinfo->screen() : DefaultScreen(QXcbX11Info::display())); + } + + qt_x11SetDefaultScreen(qt_x11Info(pixmap).screen()); + +#if QT_CONFIG(xrender) + if (X11->use_xrender && d->picture && qt_x11PictureHandle(pixmap)) { +#if 0 + // ### Qt 5: enable this + XRenderPictureAttributes attrs; + attrs.repeat = true; + XRenderChangePicture(d->dpy, pixmap.x11PictureHandle(), CPRepeat, &attrs); + + if (mono_src) { + qt_render_bitmap(d->dpy, d->scrn, pixmap.x11PictureHandle(), d->picture, + sx, sy, x, y, w, h, d->cpen); + } else { + XRenderComposite(d->dpy, d->composition_mode, + pixmap.x11PictureHandle(), XNone, d->picture, + sx, sy, 0, 0, x, y, w, h); + } +#else + const int numTiles = (w / pixmap.width()) * (h / pixmap.height()); + if (numTiles < 100) { + // this is essentially qt_draw_tile(), inlined for + // the XRenderComposite call + int yPos, xPos, drawH, drawW, yOff, xOff; + yPos = y; + yOff = sy; + while (yPos < y + h) { + drawH = pixmap.height() - yOff; // Cropping first row + if (yPos + drawH > y + h) // Cropping last row + drawH = y + h - yPos; + xPos = x; + xOff = sx; + while (xPos < x + w) { + drawW = pixmap.width() - xOff; // Cropping first column + if (xPos + drawW > x + w) // Cropping last column + drawW = x + w - xPos; + if (mono_src) { + qt_render_bitmap(d->dpy, d->scrn, qt_x11PictureHandle(pixmap), d->picture, + xOff, yOff, xPos, yPos, drawW, drawH, d->cpen); + } else { + XRenderComposite(d->dpy, d->composition_mode, + qt_x11PictureHandle(pixmap), XNone, d->picture, + xOff, yOff, 0, 0, xPos, yPos, drawW, drawH); + } + xPos += drawW; + xOff = 0; + } + yPos += drawH; + yOff = 0; + } + } else { + w = qMin(w, d->pdev->width() - x); + h = qMin(h, d->pdev->height() - y); + if (w <= 0 || h <= 0) + return; + + const int pw = w + sx; + const int ph = h + sy; + QPixmap pm(pw, ph); + if (pixmap.hasAlpha() || mono_src) + pm.fill(Qt::transparent); + + const int mode = pixmap.hasAlpha() ? PictOpOver : PictOpSrc; + const ::Picture pmPicture = qt_x11PictureHandle(pm); + + // first tile + XRenderComposite(d->dpy, mode, + qt_x11PictureHandle(pixmap), XNone, pmPicture, + 0, 0, 0, 0, 0, 0, qMin(pw, pixmap.width()), qMin(ph, pixmap.height())); + + // first row of tiles + int xPos = pixmap.width(); + const int sh = qMin(ph, pixmap.height()); + while (xPos < pw) { + const int sw = qMin(xPos, pw - xPos); + XRenderComposite(d->dpy, mode, + pmPicture, XNone, pmPicture, + 0, 0, 0, 0, xPos, 0, sw, sh); + xPos *= 2; + } + + // remaining rows + int yPos = pixmap.height(); + const int sw = pw; + while (yPos < ph) { + const int sh = qMin(yPos, ph - yPos); + XRenderComposite(d->dpy, mode, + pmPicture, XNone, pmPicture, + 0, 0, 0, 0, 0, yPos, sw, sh); + yPos *= 2; + } + + // composite + if (mono_src) + qt_render_bitmap(d->dpy, d->scrn, pmPicture, d->picture, + sx, sy, x, y, w, h, d->cpen); + else + XRenderComposite(d->dpy, d->composition_mode, + pmPicture, XNone, d->picture, + sx, sy, 0, 0, x, y, w, h); + } +#endif + } else +#endif // QT_CONFIG(xrender) + if (pixmap.depth() > 1 && !static_cast<QX11PlatformPixmap*>(pixmap.handle())->x11_mask) { + XSetTile(d->dpy, d->gc, qt_x11PixmapHandle(pixmap)); + XSetFillStyle(d->dpy, d->gc, FillTiled); + XSetTSOrigin(d->dpy, d->gc, x-sx, y-sy); + XFillRectangle(d->dpy, d->hd, d->gc, x, y, w, h); + XSetTSOrigin(d->dpy, d->gc, 0, 0); + XSetFillStyle(d->dpy, d->gc, FillSolid); + } else { + qt_draw_tile(this, x, y, w, h, pixmap, sx, sy); + } +} + +bool QX11PaintEngine::drawCachedGlyphs(const QTransform &transform, const QTextItemInt &ti) +{ +#if QT_CONFIG(xrender) + Q_D(QX11PaintEngine); + Q_ASSERT(ti.fontEngine->type() == QFontEngine::Freetype); + + if (!X11->use_xrender) + return false; + + QFontEngineFT *ft = static_cast<QFontEngineFT *>(ti.fontEngine); + QFontEngineFT::QGlyphSet *set = ft->loadGlyphSet(transform); + + if (!set || set->outline_drawing) + return false; + + QFontEngine::GlyphFormat glyphFormat = QXRenderGlyphCache::glyphFormatForDepth(ft, d->pdev_depth); + + QXRenderGlyphCache *cache = static_cast<QXRenderGlyphCache *>(ft->glyphCache(set, glyphFormat, transform)); + if (!cache) { + cache = new QXRenderGlyphCache(QXcbX11Info(), glyphFormat, transform); + ft->setGlyphCache(set, cache); + } + + return cache->draw(X11->getSolidFill(d->scrn, d->cpen.color()), d->picture, transform, ti); +#else // !QT_CONFIG(xrender) + return false; +#endif // QT_CONFIG(xrender) +} + +void QX11PaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem) +{ + Q_D(QX11PaintEngine); + const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem); + + switch (ti.fontEngine->type()) { + case QFontEngine::TestFontEngine: + case QFontEngine::Box: + d->drawBoxTextItem(p, ti); + break; +#if QT_CONFIG(fontconfig) + case QFontEngine::Freetype: + drawFreetype(p, ti); + break; +#endif + default: + Q_ASSERT(false); + } +} + +#if QT_CONFIG(fontconfig) +static bool path_for_glyphs(QPainterPath *path, + const QVarLengthArray<glyph_t> &glyphs, + const QVarLengthArray<QFixedPoint> &positions, + const QFontEngineFT *ft) +{ + bool result = true; + *path = QPainterPath(); + path->setFillRule(Qt::WindingFill); + ft->lockFace(); + int i = 0; + while (i < glyphs.size()) { + QFontEngineFT::Glyph *glyph = ft->loadGlyph(glyphs[i], 0, QFontEngineFT::Format_Mono); + // #### fix case where we don't get a glyph + if (!glyph || glyph->format != QFontEngineFT::Format_Mono) { + result = false; + break; + } + + int n = 0; + int h = glyph->height; + int xp = qRound(positions[i].x); + int yp = qRound(positions[i].y); + + xp += glyph->x; + yp += -glyph->y + glyph->height; + int pitch = ((glyph->width + 31) & ~31) >> 3; + + uchar *src = glyph->data; + while (h--) { + for (int x = 0; x < glyph->width; ++x) { + bool set = src[x >> 3] & (0x80 >> (x & 7)); + if (set) { + QRect r(xp + x, yp - h, 1, 1); + while (x+1 < glyph->width && src[(x+1) >> 3] & (0x80 >> ((x+1) & 7))) { + ++x; + r.setRight(r.right()+1); + } + + path->addRect(r); + ++n; + } + } + src += pitch; + } + ++i; + } + ft->unlockFace(); + return result; +} + +void QX11PaintEngine::drawFreetype(const QPointF &p, const QTextItemInt &ti) +{ + Q_D(QX11PaintEngine); + + if (!ti.glyphs.numGlyphs) + return; + + if (!d->cpen.isSolid()) { + QPaintEngine::drawTextItem(p, ti); + return; + } + + const bool xrenderPath = (X11->use_xrender + && !(d->pdev->devType() == QInternal::Pixmap + && static_cast<const QPixmap *>(d->pdev)->handle()->pixelType() == QPlatformPixmap::BitmapType)); + + if (xrenderPath) { + QTransform transform = d->matrix; + transform.translate(p.x(), p.y()); + + if (drawCachedGlyphs(transform, ti)) + return; + } + + QTransform transform; + transform.translate(p.x(), p.y()); + + QVarLengthArray<QFixedPoint> positions; + QVarLengthArray<glyph_t> glyphs; + ti.fontEngine->getGlyphPositions(ti.glyphs, transform, ti.flags, glyphs, positions); + + if (glyphs.count() == 0) + return; + + QFontEngineFT *ft = static_cast<QFontEngineFT *>(ti.fontEngine); + QFontEngineFT::QGlyphSet *set = ft->loadGlyphSet(transform); + QPainterPath path; + + if (!set || set->outline_drawing || !path_for_glyphs(&path, glyphs, positions, ft)) { + QPaintEngine::drawTextItem(p, ti); + return; + } + + if (path.elementCount() <= 1) + return; + + Q_ASSERT((path.elementCount() % 5) == 0); + if (d->txop >= QTransform::TxScale) { + painter()->save(); + painter()->setBrush(d->cpen.brush()); + painter()->setPen(Qt::NoPen); + painter()->drawPath(path); + painter()->restore(); + return; + } + + const int rectcount = 256; + XRectangle rects[rectcount]; + int num_rects = 0; + + QPoint delta(qRound(d->matrix.dx()), qRound(d->matrix.dy())); + QRect clip(d->polygonClipper.boundingRect()); + for (int i=0; i < path.elementCount(); i+=5) { + int x = qRound(path.elementAt(i).x); + int y = qRound(path.elementAt(i).y); + int w = qRound(path.elementAt(i+1).x) - x; + int h = qRound(path.elementAt(i+2).y) - y; + + QRect rect = QRect(x + delta.x(), y + delta.y(), w, h); + rect = rect.intersected(clip); + if (rect.isEmpty()) + continue; + + rects[num_rects].x = short(rect.x()); + rects[num_rects].y = short(rect.y()); + rects[num_rects].width = ushort(rect.width()); + rects[num_rects].height = ushort(rect.height()); + ++num_rects; + if (num_rects == rectcount) { + XFillRectangles(d->dpy, d->hd, d->gc, rects, num_rects); + num_rects = 0; + } + } + if (num_rects > 0) + XFillRectangles(d->dpy, d->hd, d->gc, rects, num_rects); +} +#endif // QT_CONFIG(fontconfig) + +#if QT_CONFIG(xrender) +QXRenderGlyphCache::QXRenderGlyphCache(QXcbX11Info x, QFontEngine::GlyphFormat format, const QTransform &matrix) + : QFontEngineGlyphCache(format, matrix) + , xinfo(x) + , gset(XNone) +{} + +QXRenderGlyphCache::~QXRenderGlyphCache() +{ + if (gset != XNone) + XRenderFreeGlyphSet(xinfo.display(), gset); +} + +bool QXRenderGlyphCache::addGlyphs(const QTextItemInt &ti, QVarLengthArray<glyph_t> glyphs, QVarLengthArray<QFixedPoint> positions) +{ + Q_ASSERT(ti.fontEngine->type() == QFontEngine::Freetype); + + QFontEngineFT *ft = static_cast<QFontEngineFT *>(ti.fontEngine); + QFontEngineFT::QGlyphSet *set = ft->loadGlyphSet(transform()); + + XGlyphInfo xglyphinfo; + + for (int i = 0; i < glyphs.size(); ++i) { + const QFixed spp = ft->subPixelPositionForX(positions[i].x); + QFontEngineFT::Glyph *glyph = set->getGlyph(glyphs[i], spp); + Glyph xglyphid = qHash(QFontEngineFT::GlyphAndSubPixelPosition(glyphs[i], spp)); + + if (glyph && glyph->format == glyphFormat()) { + if (cachedGlyphs.contains(xglyphid)) { + continue; + } else { + set->setGlyph(glyphs[i], spp, nullptr); + delete glyph; + glyph = 0; + } + } + + glyph = ft->loadGlyphFor(glyphs[i], spp, glyphFormat(), transform()); + + if (glyph == 0 || glyph->format != glyphFormat()) + return false; + + set->setGlyph(glyphs[i], spp, glyph); + Q_ASSERT(glyph->data || glyph->width == 0 || glyph->height == 0); + + xglyphinfo.width = glyph->width; + xglyphinfo.height = glyph->height; + xglyphinfo.x = -glyph->x; + xglyphinfo.y = glyph->y; + xglyphinfo.xOff = glyph->advance; + xglyphinfo.yOff = 0; + + XRenderAddGlyphs(xinfo.display(), glyphSet(), &xglyphid, &xglyphinfo, 1, (const char *) glyph->data, glyphBufferSize(*glyph)); + cachedGlyphs.insert(xglyphid); + } + + return true; +} + +bool QXRenderGlyphCache::draw(Drawable src, Drawable dst, const QTransform &matrix, const QTextItemInt &ti) +{ + Q_ASSERT(ti.fontEngine->type() == QFontEngine::Freetype); + + if (ti.glyphs.numGlyphs == 0) + return true; + + QFontEngineFT *ft = static_cast<QFontEngineFT *>(ti.fontEngine); + QFontEngineFT::QGlyphSet *set = ft->loadGlyphSet(matrix); + + QVarLengthArray<glyph_t> glyphs; + QVarLengthArray<QFixedPoint> positions; + ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions); + + if (glyphs.isEmpty()) + return true; + + if (!addGlyphs(ti, glyphs, positions)) + return false; + + QVarLengthArray<unsigned int> chars(glyphs.size()); + + for (int i = 0; i < glyphs.size(); ++i) + chars[i] = glyphId(glyphs[i], ft->subPixelPositionForX(positions[i].x)); + + int i = 0; + while (i < glyphs.size() && !isValidCoordinate(positions[i])) + ++i; + + if (i >= glyphs.size()) + return true; + + QFixed xp = positions[i].x; + QFixed yp = positions[i].y; + QFixed offs = QFixed::fromReal(aliasedCoordinateDelta); + + XGlyphElt32 elt; + elt.glyphset = gset; + elt.chars = &chars[i]; + elt.nchars = 1; + elt.xOff = qRound(xp + offs); + elt.yOff = qRound(yp + offs); + + ++i; + + for (; i < glyphs.size(); ++i) { + if (!isValidCoordinate(positions[i])) + break; + + const QFixed spp = ft->subPixelPositionForX(positions[i].x); + QFontEngineFT::Glyph *g = set->getGlyph(glyphs[i], spp); + + if (g + && positions[i].x == xp + g->advance + && positions[i].y == yp + && elt.nchars < 253 // don't draw more than 253 characters as some X servers + // hang with it + ) { + elt.nchars++; + xp += g->advance; + } else { + xp = positions[i].x; + yp = positions[i].y; + + XRenderCompositeText32(xinfo.display(), PictOpOver, src, dst, + renderPictFormat(), 0, 0, 0, 0, + &elt, 1); + elt.chars = &chars[i]; + elt.nchars = 1; + elt.xOff = qRound(xp + offs); + elt.yOff = qRound(yp + offs); + } + } + + XRenderCompositeText32(xinfo.display(), PictOpOver, src, dst, + renderPictFormat(), 0, 0, 0, 0, &elt, 1); + + return true; +} + +GlyphSet QXRenderGlyphCache::glyphSet() +{ + if (gset == XNone) + gset = XRenderCreateGlyphSet(xinfo.display(), renderPictFormat()); + + Q_ASSERT(gset != XNone); + return gset; +} + +int QXRenderGlyphCache::glyphBufferSize(const QFontEngineFT::Glyph &glyph) const +{ + int pitch = 0; + + switch (glyphFormat()) { + case QFontEngine::Format_Mono: + pitch = ((glyph.width + 31) & ~31) >> 3; + break; + case QFontEngine::Format_A8: + pitch = (glyph.width + 3) & ~3; + break; + default: + pitch = glyph.width * 4; + break; + } + + return pitch * glyph.height; +} + +QImage::Format QXRenderGlyphCache::imageFormat() const +{ + switch (glyphFormat()) { + case QFontEngine::Format_None: + Q_UNREACHABLE(); + break; + case QFontEngine::Format_Mono: + return QImage::Format_Mono; + break; + case QFontEngine::Format_A8: + return QImage::Format_Alpha8; + break; + case QFontEngine::Format_A32: + case QFontEngine::Format_ARGB: + return QImage::Format_ARGB32_Premultiplied; + break; + } + + Q_UNREACHABLE(); +} + +const XRenderPictFormat *QXRenderGlyphCache::renderPictFormat() const +{ + switch (glyphFormat()) { + case QFontEngine::Format_None: + Q_UNREACHABLE(); + break; + case QFontEngine::Format_Mono: + return XRenderFindStandardFormat(xinfo.display(), PictStandardA1); + break; + case QFontEngine::Format_A8: + return XRenderFindStandardFormat(xinfo.display(), PictStandardA8); + break; + case QFontEngine::Format_A32: + case QFontEngine::Format_ARGB: + return XRenderFindStandardFormat(xinfo.display(), PictStandardARGB32); + break; + } + + Q_UNREACHABLE(); +} + +QFontEngine::GlyphFormat QXRenderGlyphCache::glyphFormatForDepth(QFontEngine *fontEngine, int depth) +{ + QFontEngine::GlyphFormat glyphFormat = fontEngine->glyphFormat; + + if (glyphFormat == QFontEngine::Format_None) { + switch (depth) { + case 32: + glyphFormat = QFontEngine::Format_ARGB; + break; + case 24: + glyphFormat = QFontEngine::Format_A32; + break; + case 1: + glyphFormat = QFontEngine::Format_Mono; + break; + default: + glyphFormat = QFontEngine::Format_A8; + break; + } + } + + return glyphFormat; +} + +Glyph QXRenderGlyphCache::glyphId(glyph_t glyph, QFixed subPixelPosition) +{ + return qHash(QFontEngineFT::GlyphAndSubPixelPosition(glyph, subPixelPosition)); +} + +bool QXRenderGlyphCache::isValidCoordinate(const QFixedPoint &fp) +{ + enum { t_min = SHRT_MIN, t_max = SHRT_MAX }; + return (fp.x < t_min || fp.x > t_max || fp.y < t_min || fp.y > t_max) ? false : true; +} +#endif // QT_CONFIG(xrender) + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11_p.h b/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11_p.h new file mode 100644 index 0000000000..34b5d929d5 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qpaintengine_x11_p.h @@ -0,0 +1,118 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QPAINTENGINE_X11_H +#define QPAINTENGINE_X11_H + +#include <QtGui/QPaintEngine> + +typedef unsigned long XID; +typedef XID Drawable; +typedef struct _XGC *GC; + +QT_BEGIN_NAMESPACE + +extern "C" { +Drawable qt_x11Handle(const QPaintDevice *pd); +GC qt_x11_get_pen_gc(QPainter *); +GC qt_x11_get_brush_gc(QPainter *); +} + +class QX11PaintEnginePrivate; +class QX11PaintEngine : public QPaintEngine +{ + Q_DECLARE_PRIVATE(QX11PaintEngine) +public: + QX11PaintEngine(); + ~QX11PaintEngine(); + + bool begin(QPaintDevice *pdev) Q_DECL_OVERRIDE; + bool end() Q_DECL_OVERRIDE; + + void updateState(const QPaintEngineState &state) Q_DECL_OVERRIDE; + + void updatePen(const QPen &pen); + void updateBrush(const QBrush &brush, const QPointF &pt); + void updateRenderHints(QPainter::RenderHints hints); + void updateFont(const QFont &font); + void updateMatrix(const QTransform &matrix); + void updateClipRegion_dev(const QRegion ®ion, Qt::ClipOperation op); + + void drawLines(const QLine *lines, int lineCount) Q_DECL_OVERRIDE; + void drawLines(const QLineF *lines, int lineCount) Q_DECL_OVERRIDE; + + void drawRects(const QRect *rects, int rectCount) Q_DECL_OVERRIDE; + void drawRects(const QRectF *rects, int rectCount) Q_DECL_OVERRIDE; + + void drawPoints(const QPoint *points, int pointCount) Q_DECL_OVERRIDE; + void drawPoints(const QPointF *points, int pointCount) Q_DECL_OVERRIDE; + + void drawEllipse(const QRect &r) Q_DECL_OVERRIDE; + void drawEllipse(const QRectF &r) Q_DECL_OVERRIDE; + + virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) Q_DECL_OVERRIDE; + inline void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode) Q_DECL_OVERRIDE + { QPaintEngine::drawPolygon(points, pointCount, mode); } + + void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) Q_DECL_OVERRIDE; + void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s) Q_DECL_OVERRIDE; + void drawPath(const QPainterPath &path) Q_DECL_OVERRIDE; + void drawTextItem(const QPointF &p, const QTextItem &textItem) Q_DECL_OVERRIDE; + void drawImage(const QRectF &r, const QImage &img, const QRectF &sr, + Qt::ImageConversionFlags flags = Qt::AutoColor) Q_DECL_OVERRIDE; + + virtual Drawable handle() const; + inline Type type() const Q_DECL_OVERRIDE { return QPaintEngine::X11; } + + QPainter::RenderHints supportedRenderHints() const; + +protected: + QX11PaintEngine(QX11PaintEnginePrivate &dptr); + +#if QT_CONFIG(fontconfig) + void drawFreetype(const QPointF &p, const QTextItemInt &ti); + bool drawCachedGlyphs(const QTransform &transform, const QTextItemInt &ti); +#endif // QT_CONFIG(fontconfig) + + friend class QPixmap; + friend class QFontEngineBox; + friend GC qt_x11_get_pen_gc(QPainter *); + friend GC qt_x11_get_brush_gc(QPainter *); + +private: + Q_DISABLE_COPY(QX11PaintEngine) +}; + +QT_END_NAMESPACE + +#endif // QPAINTENGINE_X11_H diff --git a/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp new file mode 100644 index 0000000000..72fe1cd05d --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp @@ -0,0 +1,2104 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QGuiApplication> + +#include <private/qdrawhelper_p.h> +#include <private/qimage_p.h> +#include <private/qimagepixmapcleanuphooks_p.h> + +#include "qxcbnativepainting.h" +#include "qpixmap_x11_p.h" +#include "qcolormap_x11_p.h" +#include "qpaintengine_x11_p.h" + +QT_BEGIN_NAMESPACE + +#if QT_POINTER_SIZE == 8 // 64-bit versions + +Q_ALWAYS_INLINE uint PREMUL(uint x) { + uint a = x >> 24; + quint64 t = (((quint64(x)) | ((quint64(x)) << 24)) & 0x00ff00ff00ff00ff) * a; + t = (t + ((t >> 8) & 0xff00ff00ff00ff) + 0x80008000800080) >> 8; + t &= 0x000000ff00ff00ff; + return (uint(t)) | (uint(t >> 24)) | (a << 24); +} + +#else // 32-bit versions + +Q_ALWAYS_INLINE uint PREMUL(uint x) { + uint a = x >> 24; + uint t = (x & 0xff00ff) * a; + t = (t + ((t >> 8) & 0xff00ff) + 0x800080) >> 8; + t &= 0xff00ff; + + x = ((x >> 8) & 0xff) * a; + x = (x + ((x >> 8) & 0xff) + 0x80); + x &= 0xff00; + x |= t | (a << 24); + return x; +} +#endif + + + +struct QXImageWrapper +{ + XImage *xi; +}; + +QPixmap qt_toX11Pixmap(const QImage &image) +{ + QPlatformPixmap *data = + new QX11PlatformPixmap(image.depth() == 1 + ? QPlatformPixmap::BitmapType + : QPlatformPixmap::PixmapType); + + data->fromImage(image, Qt::AutoColor); + + return QPixmap(data); +} + +QPixmap qt_toX11Pixmap(const QPixmap &pixmap) +{ + if (pixmap.isNull()) + return QPixmap(); + + if (QPixmap(pixmap).data_ptr()->classId() == QPlatformPixmap::X11Class) + return pixmap; + + return qt_toX11Pixmap(pixmap.toImage()); +} + +// For thread-safety: +// image->data does not belong to X11, so we must free it ourselves. + +inline static void qSafeXDestroyImage(XImage *x) +{ + if (x->data) { + free(x->data); + x->data = 0; + } + XDestroyImage(x); +} + +QBitmap QX11PlatformPixmap::mask_to_bitmap(int screen) const +{ + if (!x11_mask) + return QBitmap(); + qt_x11SetDefaultScreen(screen); + QBitmap bm(w, h); + QX11PlatformPixmap *that = qt_x11Pixmap(bm); + const QXcbX11Info *x = that->x11_info(); + GC gc = XCreateGC(x->display(), that->handle(), 0, 0); + XCopyArea(x->display(), x11_mask, that->handle(), gc, 0, 0, + that->width(), that->height(), 0, 0); + XFreeGC(x->display(), gc); + return bm; +} + +void QX11PlatformPixmap::bitmapFromImage(const QImage &image) +{ + w = image.width(); + h = image.height(); + d = 1; + is_null = (w <= 0 || h <= 0); + hd = createBitmapFromImage(image); +#if QT_CONFIG(xrender) + if (X11->use_xrender) + picture = XRenderCreatePicture(xinfo.display(), hd, + XRenderFindStandardFormat(xinfo.display(), PictStandardA1), 0, 0); +#endif // QT_CONFIG(xrender) +} + +bool QX11PlatformPixmap::canTakeQImageFromXImage(const QXImageWrapper &xiWrapper) const +{ + XImage *xi = xiWrapper.xi; + + if (xi->format != ZPixmap) + return false; + + // ARGB32_Premultiplied + if (picture && depth() == 32) + return true; + + // RGB32 + if (depth() == 24 && xi->bits_per_pixel == 32 && xi->red_mask == 0xff0000 + && xi->green_mask == 0xff00 && xi->blue_mask == 0xff) + return true; + + // RGB16 + if (depth() == 16 && xi->bits_per_pixel == 16 && xi->red_mask == 0xf800 + && xi->green_mask == 0x7e0 && xi->blue_mask == 0x1f) + return true; + + return false; +} + +QImage QX11PlatformPixmap::takeQImageFromXImage(const QXImageWrapper &xiWrapper) const +{ + XImage *xi = xiWrapper.xi; + + QImage::Format format = QImage::Format_ARGB32_Premultiplied; + if (depth() == 24) + format = QImage::Format_RGB32; + else if (depth() == 16) + format = QImage::Format_RGB16; + + QImage image((uchar *)xi->data, xi->width, xi->height, xi->bytes_per_line, format); + image.setDevicePixelRatio(devicePixelRatio()); + // take ownership + image.data_ptr()->own_data = true; + xi->data = 0; + + // we may have to swap the byte order + if ((QSysInfo::ByteOrder == QSysInfo::LittleEndian && xi->byte_order == MSBFirst) + || (QSysInfo::ByteOrder == QSysInfo::BigEndian && xi->byte_order == LSBFirst)) + { + for (int i=0; i < image.height(); i++) { + if (depth() == 16) { + ushort *p = (ushort*)image.scanLine(i); + ushort *end = p + image.width(); + while (p < end) { + *p = ((*p << 8) & 0xff00) | ((*p >> 8) & 0x00ff); + p++; + } + } else { + uint *p = (uint*)image.scanLine(i); + uint *end = p + image.width(); + while (p < end) { + *p = ((*p << 24) & 0xff000000) | ((*p << 8) & 0x00ff0000) + | ((*p >> 8) & 0x0000ff00) | ((*p >> 24) & 0x000000ff); + p++; + } + } + } + } + + // fix-up alpha channel + if (format == QImage::Format_RGB32) { + QRgb *p = (QRgb *)image.bits(); + for (int y = 0; y < xi->height; ++y) { + for (int x = 0; x < xi->width; ++x) + p[x] |= 0xff000000; + p += xi->bytes_per_line / 4; + } + } + + XDestroyImage(xi); + return image; +} + +XID QX11PlatformPixmap::bitmap_to_mask(const QBitmap &bitmap, int screen) +{ + if (bitmap.isNull()) + return 0; + QBitmap bm = bitmap; + qt_x11SetScreen(bm, screen); + + QX11PlatformPixmap *that = qt_x11Pixmap(bm); + const QXcbX11Info *x = that->x11_info(); + Pixmap mask = XCreatePixmap(x->display(), RootWindow(x->display(), screen), + that->width(), that->height(), 1); + GC gc = XCreateGC(x->display(), mask, 0, 0); + XCopyArea(x->display(), that->handle(), mask, gc, 0, 0, + that->width(), that->height(), 0, 0); + XFreeGC(x->display(), gc); + return mask; +} + +Drawable qt_x11Handle(const QPixmap &pixmap) +{ + if (pixmap.isNull()) + return XNone; + + if (pixmap.handle()->classId() != QPlatformPixmap::X11Class) + return XNone; + + return static_cast<const QX11PlatformPixmap *>(pixmap.handle())->handle(); +} + + +/***************************************************************************** + Internal functions + *****************************************************************************/ + +//extern const uchar *qt_get_bitflip_array(); // defined in qimage.cpp + +// Returns position of highest bit set or -1 if none +static int highest_bit(uint v) +{ + int i; + uint b = (uint)1 << 31; + for (i=31; ((b & v) == 0) && i>=0; i--) + b >>= 1; + return i; +} + +// Counts the number of bits set in 'v' +static uint n_bits(uint v) +{ + int i = 0; + while (v) { + v = v & (v - 1); + i++; + } + return i; +} + +static uint *red_scale_table = 0; +static uint *green_scale_table = 0; +static uint *blue_scale_table = 0; + +static void cleanup_scale_tables() +{ + delete[] red_scale_table; + delete[] green_scale_table; + delete[] blue_scale_table; +} + +/* + Could do smart bitshifting, but the "obvious" algorithm only works for + nBits >= 4. This is more robust. +*/ +static void build_scale_table(uint **table, uint nBits) +{ + if (nBits > 7) { + qWarning("build_scale_table: internal error, nBits = %i", nBits); + return; + } + if (!*table) { + static bool firstTable = true; + if (firstTable) { + qAddPostRoutine(cleanup_scale_tables); + firstTable = false; + } + *table = new uint[256]; + } + int maxVal = (1 << nBits) - 1; + int valShift = 8 - nBits; + int i; + for (i = 0 ; i < maxVal + 1 ; i++) + (*table)[i << valShift] = i*255/maxVal; +} + +static int defaultScreen = -1; + +int qt_x11SetDefaultScreen(int screen) +{ + int old = defaultScreen; + defaultScreen = screen; + return old; +} + +void qt_x11SetScreen(QPixmap &pixmap, int screen) +{ + if (pixmap.paintingActive()) { + qWarning("qt_x11SetScreen(): Cannot change screens during painting"); + return; + } + + if (pixmap.isNull()) + return; + + if (pixmap.handle()->classId() != QPlatformPixmap::X11Class) + return; + + if (screen < 0) + screen = QXcbX11Info::appScreen(); + + QX11PlatformPixmap *pm = static_cast<QX11PlatformPixmap *>(pixmap.handle()); + if (screen == pm->xinfo.screen()) + return; // nothing to do + + if (pixmap.isNull()) { + pm->xinfo = QXcbX11Info::fromScreen(screen); + return; + } + +#if 0 + qDebug("qt_x11SetScreen for %p from %d to %d. Size is %d/%d", pm, pm->xinfo.screen(), screen, pm->width(), pm->height()); +#endif + + qt_x11SetDefaultScreen(screen); + pixmap = qt_toX11Pixmap(pixmap.toImage()); +} + +/***************************************************************************** + QPixmap member functions + *****************************************************************************/ + +QBasicAtomicInt qt_pixmap_serial = Q_BASIC_ATOMIC_INITIALIZER(0); +int Q_GUI_EXPORT qt_x11_preferred_pixmap_depth = 0; + +QX11PlatformPixmap::QX11PlatformPixmap(PixelType pixelType) + : QPlatformPixmap(pixelType, X11Class), hd(0), + flags(Uninitialized), x11_mask(0), picture(0), mask_picture(0), hd2(0), + dpr(1.0), pengine(0) +{} + +QX11PlatformPixmap::~QX11PlatformPixmap() +{ + // Cleanup hooks have to be called before the handles are freed + if (is_cached) { + QImagePixmapCleanupHooks::executePlatformPixmapDestructionHooks(this); + is_cached = false; + } + + release(); +} + +QPlatformPixmap *QX11PlatformPixmap::createCompatiblePlatformPixmap() const +{ + QX11PlatformPixmap *p = new QX11PlatformPixmap(pixelType()); + p->setDevicePixelRatio(devicePixelRatio()); + return p; +} + +void QX11PlatformPixmap::resize(int width, int height) +{ + setSerialNumber(qt_pixmap_serial.fetchAndAddRelaxed(1)); + + w = width; + h = height; + is_null = (w <= 0 || h <= 0); + + if (defaultScreen >= 0 && defaultScreen != xinfo.screen()) { + xinfo = QXcbX11Info::fromScreen(defaultScreen); + } + + int dd = xinfo.depth(); + + if (qt_x11_preferred_pixmap_depth) + dd = qt_x11_preferred_pixmap_depth; + + bool make_null = w <= 0 || h <= 0; // create null pixmap + d = (pixelType() == BitmapType ? 1 : dd); + if (make_null || d == 0) { + w = 0; + h = 0; + is_null = true; + hd = 0; + picture = 0; + d = 0; + if (!make_null) + qWarning("QPixmap: Invalid pixmap parameters"); + return; + } + hd = XCreatePixmap(xinfo.display(), + RootWindow(xinfo.display(), xinfo.screen()), + w, h, d); +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + XRenderPictFormat *format = d == 1 + ? XRenderFindStandardFormat(xinfo.display(), PictStandardA1) + : XRenderFindVisualFormat(xinfo.display(), (Visual *) xinfo.visual()); + picture = XRenderCreatePicture(xinfo.display(), hd, format, 0, 0); + } +#endif // QT_CONFIG(xrender) +} + +struct QX11AlphaDetector +{ + bool hasAlpha() const { + if (checked) + return has; + // Will implicitly also check format and return quickly for opaque types... + checked = true; + has = image->isNull() ? false : const_cast<QImage *>(image)->data_ptr()->checkForAlphaPixels(); + return has; + } + + bool hasXRenderAndAlpha() const { + if (!X11->use_xrender) + return false; + return hasAlpha(); + } + + QX11AlphaDetector(const QImage *i, Qt::ImageConversionFlags flags) + : image(i), checked(false), has(false) + { + if (flags & Qt::NoOpaqueDetection) { + checked = true; + has = image->hasAlphaChannel(); + } + } + + const QImage *image; + mutable bool checked; + mutable bool has; +}; + +void QX11PlatformPixmap::fromImage(const QImage &img, Qt::ImageConversionFlags flags) +{ + setSerialNumber(qt_pixmap_serial.fetchAndAddRelaxed(1)); + + w = img.width(); + h = img.height(); + d = img.depth(); + is_null = (w <= 0 || h <= 0); + setDevicePixelRatio(img.devicePixelRatio()); + + if (is_null) { + w = h = 0; + return; + } + + if (defaultScreen >= 0 && defaultScreen != xinfo.screen()) { + xinfo = QXcbX11Info::fromScreen(defaultScreen); + } + + if (pixelType() == BitmapType) { + bitmapFromImage(img); + return; + } + + if (uint(w) >= 32768 || uint(h) >= 32768) { + w = h = 0; + is_null = true; + return; + } + + QX11AlphaDetector alphaCheck(&img, flags); + int dd = alphaCheck.hasXRenderAndAlpha() ? 32 : xinfo.depth(); + + if (qt_x11_preferred_pixmap_depth) + dd = qt_x11_preferred_pixmap_depth; + + QImage image = img; + + // must be monochrome + if (dd == 1 || (flags & Qt::ColorMode_Mask) == Qt::MonoOnly) { + if (d != 1) { + // dither + image = image.convertToFormat(QImage::Format_MonoLSB, flags); + d = 1; + } + } else { // can be both + bool conv8 = false; + if (d > 8 && dd <= 8) { // convert to 8 bit + if ((flags & Qt::DitherMode_Mask) == Qt::AutoDither) + flags = (flags & ~Qt::DitherMode_Mask) + | Qt::PreferDither; + conv8 = true; + } else if ((flags & Qt::ColorMode_Mask) == Qt::ColorOnly) { + conv8 = (d == 1); // native depth wanted + } else if (d == 1) { + if (image.colorCount() == 2) { + QRgb c0 = image.color(0); // Auto: convert to best + QRgb c1 = image.color(1); + conv8 = qMin(c0,c1) != qRgb(0,0,0) || qMax(c0,c1) != qRgb(255,255,255); + } else { + // eg. 1-color monochrome images (they do exist). + conv8 = true; + } + } + if (conv8) { + image = image.convertToFormat(QImage::Format_Indexed8, flags); + d = 8; + } + } + + if (d == 1 || d == 16 || d == 24 || image.format() == QImage::Format_Grayscale8) { + image = image.convertToFormat(QImage::Format_RGB32, flags); + fromImage(image, Qt::AutoColor); + return; + } + + Display *dpy = xinfo.display(); + Visual *visual = (Visual *)xinfo.visual(); + XImage *xi = 0; + bool trucol = (visual->c_class >= TrueColor); + int nbytes = image.byteCount(); + uchar *newbits= 0; + +#if QT_CONFIG(xrender) + if (alphaCheck.hasXRenderAndAlpha()) { + const QImage &cimage = image; + + d = 32; + + if (QXcbX11Info::appDepth() != d) { + xinfo.setDepth(d); + } + + hd = XCreatePixmap(dpy, RootWindow(dpy, xinfo.screen()), w, h, d); + picture = XRenderCreatePicture(dpy, hd, + XRenderFindStandardFormat(dpy, PictStandardARGB32), 0, 0); + + xi = XCreateImage(dpy, visual, d, ZPixmap, 0, 0, w, h, 32, 0); + Q_CHECK_PTR(xi); + newbits = (uchar *)malloc(xi->bytes_per_line*h); + Q_CHECK_PTR(newbits); + xi->data = (char *)newbits; + + switch (cimage.format()) { + case QImage::Format_Indexed8: { + QVector<QRgb> colorTable = cimage.colorTable(); + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const uchar *p = cimage.scanLine(y); + for (int x = 0; x < w; ++x) { + const QRgb rgb = colorTable[p[x]]; + const int a = qAlpha(rgb); + if (a == 0xff) + *xidata = rgb; + else + // RENDER expects premultiplied alpha + *xidata = qRgba(qt_div_255(qRed(rgb) * a), + qt_div_255(qGreen(rgb) * a), + qt_div_255(qBlue(rgb) * a), + a); + ++xidata; + } + } + } + break; + case QImage::Format_RGB32: { + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const QRgb *p = (const QRgb *) cimage.scanLine(y); + for (int x = 0; x < w; ++x) + *xidata++ = p[x] | 0xff000000; + } + } + break; + case QImage::Format_ARGB32: { + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const QRgb *p = (const QRgb *) cimage.scanLine(y); + for (int x = 0; x < w; ++x) { + const QRgb rgb = p[x]; + const int a = qAlpha(rgb); + if (a == 0xff) + *xidata = rgb; + else + // RENDER expects premultiplied alpha + *xidata = qRgba(qt_div_255(qRed(rgb) * a), + qt_div_255(qGreen(rgb) * a), + qt_div_255(qBlue(rgb) * a), + a); + ++xidata; + } + } + + } + break; + case QImage::Format_ARGB32_Premultiplied: { + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const QRgb *p = (const QRgb *) cimage.scanLine(y); + memcpy(xidata, p, w*sizeof(QRgb)); + xidata += w; + } + } + break; + default: + Q_ASSERT(false); + } + + if ((xi->byte_order == MSBFirst) != (QSysInfo::ByteOrder == QSysInfo::BigEndian)) { + uint *xidata = (uint *)xi->data; + uint *xiend = xidata + w*h; + while (xidata < xiend) { + *xidata = (*xidata >> 24) + | ((*xidata >> 8) & 0xff00) + | ((*xidata << 8) & 0xff0000) + | (*xidata << 24); + ++xidata; + } + } + + GC gc = XCreateGC(dpy, hd, 0, 0); + XPutImage(dpy, hd, gc, xi, 0, 0, 0, 0, w, h); + XFreeGC(dpy, gc); + + qSafeXDestroyImage(xi); + + return; + } +#endif // QT_CONFIG(xrender) + + if (trucol) { // truecolor display + if (image.format() == QImage::Format_ARGB32_Premultiplied) + image = image.convertToFormat(QImage::Format_ARGB32); + + const QImage &cimage = image; + QRgb pix[256]; // pixel translation table + const bool d8 = (d == 8); + const uint red_mask = (uint)visual->red_mask; + const uint green_mask = (uint)visual->green_mask; + const uint blue_mask = (uint)visual->blue_mask; + const int red_shift = highest_bit(red_mask) - 7; + const int green_shift = highest_bit(green_mask) - 7; + const int blue_shift = highest_bit(blue_mask) - 7; + const uint rbits = highest_bit(red_mask) - lowest_bit(red_mask) + 1; + const uint gbits = highest_bit(green_mask) - lowest_bit(green_mask) + 1; + const uint bbits = highest_bit(blue_mask) - lowest_bit(blue_mask) + 1; + + if (d8) { // setup pixel translation + QVector<QRgb> ctable = cimage.colorTable(); + for (int i=0; i < cimage.colorCount(); i++) { + int r = qRed (ctable[i]); + int g = qGreen(ctable[i]); + int b = qBlue (ctable[i]); + r = red_shift > 0 ? r << red_shift : r >> -red_shift; + g = green_shift > 0 ? g << green_shift : g >> -green_shift; + b = blue_shift > 0 ? b << blue_shift : b >> -blue_shift; + pix[i] = (b & blue_mask) | (g & green_mask) | (r & red_mask) + | ~(blue_mask | green_mask | red_mask); + } + } + + xi = XCreateImage(dpy, visual, dd, ZPixmap, 0, 0, w, h, 32, 0); + Q_CHECK_PTR(xi); + newbits = (uchar *)malloc(xi->bytes_per_line*h); + Q_CHECK_PTR(newbits); + if (!newbits) // no memory + return; + int bppc = xi->bits_per_pixel; + + bool contig_bits = n_bits(red_mask) == rbits && + n_bits(green_mask) == gbits && + n_bits(blue_mask) == bbits; + bool dither_tc = + // Want it? + (flags & Qt::Dither_Mask) != Qt::ThresholdDither && + (flags & Qt::DitherMode_Mask) != Qt::AvoidDither && + // Need it? + bppc < 24 && !d8 && + // Can do it? (Contiguous bits?) + contig_bits; + + static bool init=false; + static int D[16][16]; + if (dither_tc && !init) { + // I also contributed this code to XV - WWA. + /* + The dither matrix, D, is obtained with this formula: + + D2 = [0 2] + [3 1] + + + D2*n = [4*Dn 4*Dn+2*Un] + [4*Dn+3*Un 4*Dn+1*Un] + */ + int n,i,j; + init=1; + + /* Set D2 */ + D[0][0]=0; + D[1][0]=2; + D[0][1]=3; + D[1][1]=1; + + /* Expand using recursive definition given above */ + for (n=2; n<16; n*=2) { + for (i=0; i<n; i++) { + for (j=0; j<n; j++) { + D[i][j]*=4; + D[i+n][j]=D[i][j]+2; + D[i][j+n]=D[i][j]+3; + D[i+n][j+n]=D[i][j]+1; + } + } + } + init=true; + } + + enum { BPP8, + BPP16_565, BPP16_555, + BPP16_MSB, BPP16_LSB, + BPP24_888, + BPP24_MSB, BPP24_LSB, + BPP32_8888, + BPP32_MSB, BPP32_LSB + } mode = BPP8; + + bool same_msb_lsb = (xi->byte_order == MSBFirst) == (QSysInfo::ByteOrder == QSysInfo::BigEndian); + + if (bppc == 8) // 8 bit + mode = BPP8; + else if (bppc == 16) { // 16 bit MSB/LSB + if (red_shift == 8 && green_shift == 3 && blue_shift == -3 && !d8 && same_msb_lsb) + mode = BPP16_565; + else if (red_shift == 7 && green_shift == 2 && blue_shift == -3 && !d8 && same_msb_lsb) + mode = BPP16_555; + else + mode = (xi->byte_order == LSBFirst) ? BPP16_LSB : BPP16_MSB; + } else if (bppc == 24) { // 24 bit MSB/LSB + if (red_shift == 16 && green_shift == 8 && blue_shift == 0 && !d8 && same_msb_lsb) + mode = BPP24_888; + else + mode = (xi->byte_order == LSBFirst) ? BPP24_LSB : BPP24_MSB; + } else if (bppc == 32) { // 32 bit MSB/LSB + if (red_shift == 16 && green_shift == 8 && blue_shift == 0 && !d8 && same_msb_lsb) + mode = BPP32_8888; + else + mode = (xi->byte_order == LSBFirst) ? BPP32_LSB : BPP32_MSB; + } else + qFatal("Logic error 3"); + +#define GET_PIXEL \ + uint pixel; \ + if (d8) pixel = pix[*src++]; \ + else { \ + int r = qRed (*p); \ + int g = qGreen(*p); \ + int b = qBlue (*p++); \ + r = red_shift > 0 \ + ? r << red_shift : r >> -red_shift; \ + g = green_shift > 0 \ + ? g << green_shift : g >> -green_shift; \ + b = blue_shift > 0 \ + ? b << blue_shift : b >> -blue_shift; \ + pixel = (r & red_mask)|(g & green_mask) | (b & blue_mask) \ + | ~(blue_mask | green_mask | red_mask); \ + } + +#define GET_PIXEL_DITHER_TC \ + int r = qRed (*p); \ + int g = qGreen(*p); \ + int b = qBlue (*p++); \ + const int thres = D[x%16][y%16]; \ + if (r <= (255-(1<<(8-rbits))) && ((r<<rbits) & 255) \ + > thres) \ + r += (1<<(8-rbits)); \ + if (g <= (255-(1<<(8-gbits))) && ((g<<gbits) & 255) \ + > thres) \ + g += (1<<(8-gbits)); \ + if (b <= (255-(1<<(8-bbits))) && ((b<<bbits) & 255) \ + > thres) \ + b += (1<<(8-bbits)); \ + r = red_shift > 0 \ + ? r << red_shift : r >> -red_shift; \ + g = green_shift > 0 \ + ? g << green_shift : g >> -green_shift; \ + b = blue_shift > 0 \ + ? b << blue_shift : b >> -blue_shift; \ + uint pixel = (r & red_mask)|(g & green_mask) | (b & blue_mask); + +// again, optimized case +// can't be optimized that much :( +#define GET_PIXEL_DITHER_TC_OPT(red_shift,green_shift,blue_shift,red_mask,green_mask,blue_mask, \ + rbits,gbits,bbits) \ + const int thres = D[x%16][y%16]; \ + int r = qRed (*p); \ + if (r <= (255-(1<<(8-rbits))) && ((r<<rbits) & 255) \ + > thres) \ + r += (1<<(8-rbits)); \ + int g = qGreen(*p); \ + if (g <= (255-(1<<(8-gbits))) && ((g<<gbits) & 255) \ + > thres) \ + g += (1<<(8-gbits)); \ + int b = qBlue (*p++); \ + if (b <= (255-(1<<(8-bbits))) && ((b<<bbits) & 255) \ + > thres) \ + b += (1<<(8-bbits)); \ + uint pixel = ((r red_shift) & red_mask) \ + | ((g green_shift) & green_mask) \ + | ((b blue_shift) & blue_mask); + +#define CYCLE(body) \ + for (int y=0; y<h; y++) { \ + const uchar* src = cimage.scanLine(y); \ + uchar* dst = newbits + xi->bytes_per_line*y; \ + const QRgb* p = (const QRgb *)src; \ + body \ + } + + if (dither_tc) { + switch (mode) { + case BPP16_565: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC_OPT(<<8,<<3,>>3,0xf800,0x7e0,0x1f,5,6,5) + *dst16++ = pixel; + } + ) + break; + case BPP16_555: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC_OPT(<<7,<<2,>>3,0x7c00,0x3e0,0x1f,5,5,5) + *dst16++ = pixel; + } + ) + break; + case BPP16_MSB: // 16 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC + *dst++ = (pixel >> 8); + *dst++ = pixel; + } + ) + break; + case BPP16_LSB: // 16 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC + *dst++ = pixel; + *dst++ = pixel >> 8; + } + ) + break; + default: + qFatal("Logic error"); + } + } else { + switch (mode) { + case BPP8: // 8 bit + CYCLE( + Q_UNUSED(p); + for (int x=0; x<w; x++) + *dst++ = pix[*src++]; + ) + break; + case BPP16_565: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x = 0; x < w; x++) { + *dst16++ = ((*p >> 8) & 0xf800) + | ((*p >> 5) & 0x7e0) + | ((*p >> 3) & 0x1f); + ++p; + } + ) + break; + case BPP16_555: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x=0; x<w; x++) { + *dst16++ = ((*p >> 9) & 0x7c00) + | ((*p >> 6) & 0x3e0) + | ((*p >> 3) & 0x1f); + ++p; + } + ) + break; + case BPP16_MSB: // 16 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = (pixel >> 8); + *dst++ = pixel; + } + ) + break; + case BPP16_LSB: // 16 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + } + ) + break; + case BPP24_888: + CYCLE( + if (QSysInfo::ByteOrder == QSysInfo::BigEndian) { + for (int x=0; x<w; x++) { + *dst++ = qRed (*p); + *dst++ = qGreen(*p); + *dst++ = qBlue (*p++); + } + } else { + for (int x=0; x<w; x++) { + *dst++ = qBlue (*p); + *dst++ = qGreen(*p); + *dst++ = qRed (*p++); + } + } + ) + break; + case BPP24_MSB: // 24 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel >> 16; + *dst++ = pixel >> 8; + *dst++ = pixel; + } + ) + break; + case BPP24_LSB: // 24 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + *dst++ = pixel >> 16; + } + ) + break; + case BPP32_8888: + CYCLE( + memcpy(dst, p, w * 4); + ) + break; + case BPP32_MSB: // 32 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel >> 24; + *dst++ = pixel >> 16; + *dst++ = pixel >> 8; + *dst++ = pixel; + } + ) + break; + case BPP32_LSB: // 32 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + *dst++ = pixel >> 16; + *dst++ = pixel >> 24; + } + ) + break; + default: + qFatal("Logic error 2"); + } + } + xi->data = (char *)newbits; + } + + if (d == 8 && !trucol) { // 8 bit pixmap + int pop[256]; // pixel popularity + + if (image.colorCount() == 0) + image.setColorCount(1); + + const QImage &cimage = image; + memset(pop, 0, sizeof(int)*256); // reset popularity array + for (int i = 0; i < h; i++) { // for each scanline... + const uchar* p = cimage.scanLine(i); + const uchar *end = p + w; + while (p < end) // compute popularity + pop[*p++]++; + } + + newbits = (uchar *)malloc(nbytes); // copy image into newbits + Q_CHECK_PTR(newbits); + if (!newbits) // no memory + return; + uchar* p = newbits; + memcpy(p, cimage.bits(), nbytes); // copy image data into newbits + + /* + * The code below picks the most important colors. It is based on the + * diversity algorithm, implemented in XV 3.10. XV is (C) by John Bradley. + */ + + struct PIX { // pixel sort element + uchar r,g,b,n; // color + pad + int use; // popularity + int index; // index in colormap + int mindist; + }; + int ncols = 0; + for (int i=0; i< cimage.colorCount(); i++) { // compute number of colors + if (pop[i] > 0) + ncols++; + } + for (int i = cimage.colorCount(); i < 256; i++) // ignore out-of-range pixels + pop[i] = 0; + + // works since we make sure above to have at least + // one color in the image + if (ncols == 0) + ncols = 1; + + PIX pixarr[256]; // pixel array + PIX pixarr_sorted[256]; // pixel array (sorted) + memset(pixarr, 0, ncols*sizeof(PIX)); + PIX *px = &pixarr[0]; + int maxpop = 0; + int maxpix = 0; + uint j = 0; + QVector<QRgb> ctable = cimage.colorTable(); + for (int i = 0; i < 256; i++) { // init pixel array + if (pop[i] > 0) { + px->r = qRed (ctable[i]); + px->g = qGreen(ctable[i]); + px->b = qBlue (ctable[i]); + px->n = 0; + px->use = pop[i]; + if (pop[i] > maxpop) { // select most popular entry + maxpop = pop[i]; + maxpix = j; + } + px->index = i; + px->mindist = 1000000; + px++; + j++; + } + } + pixarr_sorted[0] = pixarr[maxpix]; + pixarr[maxpix].use = 0; + + for (int i = 1; i < ncols; i++) { // sort pixels + int minpix = -1, mindist = -1; + px = &pixarr_sorted[i-1]; + int r = px->r; + int g = px->g; + int b = px->b; + int dist; + if ((i & 1) || i<10) { // sort on max distance + for (int j=0; j<ncols; j++) { + px = &pixarr[j]; + if (px->use) { + dist = (px->r - r)*(px->r - r) + + (px->g - g)*(px->g - g) + + (px->b - b)*(px->b - b); + if (px->mindist > dist) + px->mindist = dist; + if (px->mindist > mindist) { + mindist = px->mindist; + minpix = j; + } + } + } + } else { // sort on max popularity + for (int j=0; j<ncols; j++) { + px = &pixarr[j]; + if (px->use) { + dist = (px->r - r)*(px->r - r) + + (px->g - g)*(px->g - g) + + (px->b - b)*(px->b - b); + if (px->mindist > dist) + px->mindist = dist; + if (px->use > mindist) { + mindist = px->use; + minpix = j; + } + } + } + } + pixarr_sorted[i] = pixarr[minpix]; + pixarr[minpix].use = 0; + } + + QXcbColormap cmap = QXcbColormap::instance(xinfo.screen()); + uint pix[256]; // pixel translation table + px = &pixarr_sorted[0]; + for (int i = 0; i < ncols; i++) { // allocate colors + QColor c(px->r, px->g, px->b); + pix[px->index] = cmap.pixel(c); + px++; + } + + p = newbits; + for (int i = 0; i < nbytes; i++) { // translate pixels + *p = pix[*p]; + p++; + } + } + + if (!xi) { // X image not created + xi = XCreateImage(dpy, visual, dd, ZPixmap, 0, 0, w, h, 32, 0); + if (xi->bits_per_pixel == 16) { // convert 8 bpp ==> 16 bpp + ushort *p2; + int p2inc = xi->bytes_per_line/sizeof(ushort); + ushort *newerbits = (ushort *)malloc(xi->bytes_per_line * h); + Q_CHECK_PTR(newerbits); + if (!newerbits) // no memory + return; + uchar* p = newbits; + for (int y = 0; y < h; y++) { // OOPS: Do right byte order!! + p2 = newerbits + p2inc*y; + for (int x = 0; x < w; x++) + *p2++ = *p++; + } + free(newbits); + newbits = (uchar *)newerbits; + } else if (xi->bits_per_pixel != 8) { + qWarning("QPixmap::fromImage: Display not supported " + "(bpp=%d)", xi->bits_per_pixel); + } + xi->data = (char *)newbits; + } + + hd = XCreatePixmap(dpy, + RootWindow(dpy, xinfo.screen()), + w, h, dd); + + GC gc = XCreateGC(dpy, hd, 0, 0); + XPutImage(dpy, hd, gc, xi, 0, 0, 0, 0, w, h); + XFreeGC(dpy, gc); + + qSafeXDestroyImage(xi); + d = dd; + +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + XRenderPictFormat *format = d == 1 + ? XRenderFindStandardFormat(dpy, PictStandardA1) + : XRenderFindVisualFormat(dpy, (Visual *)xinfo.visual()); + picture = XRenderCreatePicture(dpy, hd, format, 0, 0); + } +#endif + + if (alphaCheck.hasAlpha()) { + QBitmap m = QBitmap::fromImage(image.createAlphaMask(flags)); + setMask(m); + } +} + +void QX11PlatformPixmap::copy(const QPlatformPixmap *data, const QRect &rect) +{ + if (data->pixelType() == BitmapType) { + fromImage(data->toImage().copy(rect), Qt::AutoColor); + return; + } + + const QX11PlatformPixmap *x11Data = static_cast<const QX11PlatformPixmap*>(data); + + setSerialNumber(qt_pixmap_serial.fetchAndAddRelaxed(1)); + + flags &= ~Uninitialized; + xinfo = x11Data->xinfo; + d = x11Data->d; + w = rect.width(); + h = rect.height(); + is_null = (w <= 0 || h <= 0); + hd = XCreatePixmap(xinfo.display(), + RootWindow(xinfo.display(), x11Data->xinfo.screen()), + w, h, d); +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + XRenderPictFormat *format = d == 32 + ? XRenderFindStandardFormat(xinfo.display(), PictStandardARGB32) + : XRenderFindVisualFormat(xinfo.display(), (Visual *)xinfo.visual()); + picture = XRenderCreatePicture(xinfo.display(), hd, format, 0, 0); + } +#endif // QT_CONFIG(xrender) + if (x11Data->x11_mask) { + x11_mask = XCreatePixmap(xinfo.display(), hd, w, h, 1); +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + mask_picture = XRenderCreatePicture(xinfo.display(), x11_mask, + XRenderFindStandardFormat(xinfo.display(), PictStandardA1), 0, 0); + XRenderPictureAttributes attrs; + attrs.alpha_map = x11Data->mask_picture; + XRenderChangePicture(xinfo.display(), x11Data->picture, CPAlphaMap, &attrs); + } +#endif + } + +#if QT_CONFIG(xrender) + if (x11Data->picture && x11Data->d == 32) { + XRenderComposite(xinfo.display(), PictOpSrc, + x11Data->picture, 0, picture, + rect.x(), rect.y(), 0, 0, 0, 0, w, h); + } else +#endif + { + GC gc = XCreateGC(xinfo.display(), hd, 0, 0); + XCopyArea(xinfo.display(), x11Data->hd, hd, gc, + rect.x(), rect.y(), w, h, 0, 0); + if (x11Data->x11_mask) { + GC monogc = XCreateGC(xinfo.display(), x11_mask, 0, 0); + XCopyArea(xinfo.display(), x11Data->x11_mask, x11_mask, monogc, + rect.x(), rect.y(), w, h, 0, 0); + XFreeGC(xinfo.display(), monogc); + } + XFreeGC(xinfo.display(), gc); + } +} + +bool QX11PlatformPixmap::scroll(int dx, int dy, const QRect &rect) +{ + GC gc = XCreateGC(xinfo.display(), hd, 0, 0); + XCopyArea(xinfo.display(), hd, hd, gc, + rect.left(), rect.top(), rect.width(), rect.height(), + rect.left() + dx, rect.top() + dy); + XFreeGC(xinfo.display(), gc); + return true; +} + +int QX11PlatformPixmap::metric(QPaintDevice::PaintDeviceMetric metric) const +{ + switch (metric) { + case QPaintDevice::PdmDevicePixelRatio: + return devicePixelRatio(); + break; + case QPaintDevice::PdmDevicePixelRatioScaled: + return devicePixelRatio() * QPaintDevice::devicePixelRatioFScale(); + break; + case QPaintDevice::PdmWidth: + return w; + case QPaintDevice::PdmHeight: + return h; + case QPaintDevice::PdmNumColors: + return 1 << d; + case QPaintDevice::PdmDepth: + return d; + case QPaintDevice::PdmWidthMM: { + const int screen = xinfo.screen(); + const int mm = DisplayWidthMM(xinfo.display(), screen) * w + / DisplayWidth(xinfo.display(), screen); + return mm; + } + case QPaintDevice::PdmHeightMM: { + const int screen = xinfo.screen(); + const int mm = (DisplayHeightMM(xinfo.display(), screen) * h) + / DisplayHeight(xinfo.display(), screen); + return mm; + } + case QPaintDevice::PdmDpiX: + case QPaintDevice::PdmPhysicalDpiX: + return QXcbX11Info::appDpiX(xinfo.screen()); + case QPaintDevice::PdmDpiY: + case QPaintDevice::PdmPhysicalDpiY: + return QXcbX11Info::appDpiY(xinfo.screen()); + default: + qWarning("QX11PlatformPixmap::metric(): Invalid metric"); + return 0; + } +} + +void QX11PlatformPixmap::fill(const QColor &fillColor) +{ + if (fillColor.alpha() != 255) { +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + if (!picture || d != 32) + convertToARGB32(/*preserveContents = */false); + + ::Picture src = X11->getSolidFill(xinfo.screen(), fillColor); + XRenderComposite(xinfo.display(), PictOpSrc, src, 0, picture, + 0, 0, width(), height(), + 0, 0, width(), height()); + } else +#endif + { + QImage im(width(), height(), QImage::Format_ARGB32_Premultiplied); + im.fill(PREMUL(fillColor.rgba())); + release(); + fromImage(im, Qt::AutoColor | Qt::OrderedAlphaDither); + } + return; + } + + GC gc = XCreateGC(xinfo.display(), hd, 0, 0); + if (depth() == 1) { + XSetForeground(xinfo.display(), gc, qGray(fillColor.rgb()) > 127 ? 0 : 1); + } else if (X11->use_xrender && d >= 24) { + XSetForeground(xinfo.display(), gc, fillColor.rgba()); + } else { + XSetForeground(xinfo.display(), gc, + QXcbColormap::instance(xinfo.screen()).pixel(fillColor)); + } + XFillRectangle(xinfo.display(), hd, gc, 0, 0, width(), height()); + XFreeGC(xinfo.display(), gc); +} + +QBitmap QX11PlatformPixmap::mask() const +{ + QBitmap mask; +#if QT_CONFIG(xrender) + if (picture && d == 32) { + // #### slow - there must be a better way.. + mask = QBitmap::fromImage(toImage().createAlphaMask()); + } else +#endif + if (d == 1) { + QX11PlatformPixmap *that = const_cast<QX11PlatformPixmap*>(this); + mask = QPixmap(that); + } else { + mask = mask_to_bitmap(xinfo.screen()); + } + return mask; +} + +void QX11PlatformPixmap::setMask(const QBitmap &newmask) +{ + if (newmask.isNull()) { // clear mask +#if QT_CONFIG(xrender) + if (picture && d == 32) { + QX11PlatformPixmap newData(pixelType()); + newData.resize(w, h); + newData.fill(Qt::black); + XRenderComposite(xinfo.display(), PictOpOver, + picture, 0, newData.picture, + 0, 0, 0, 0, 0, 0, w, h); + release(); + *this = newData; + // the new QX11PlatformPixmap object isn't referenced yet, so + // ref it + ref.ref(); + + // the below is to make sure the QX11PlatformPixmap destructor + // doesn't delete our newly created render picture + newData.hd = 0; + newData.x11_mask = 0; + newData.picture = 0; + newData.mask_picture = 0; + newData.hd2 = 0; + } else +#endif + if (x11_mask) { +#if QT_CONFIG(xrender) + if (picture) { + XRenderPictureAttributes attrs; + attrs.alpha_map = 0; + XRenderChangePicture(xinfo.display(), picture, CPAlphaMap, + &attrs); + } + if (mask_picture) + XRenderFreePicture(xinfo.display(), mask_picture); + mask_picture = 0; +#endif + XFreePixmap(xinfo.display(), x11_mask); + x11_mask = 0; + } + return; + } + +#if QT_CONFIG(xrender) + if (picture && d == 32) { + XRenderComposite(xinfo.display(), PictOpSrc, + picture, qt_x11Pixmap(newmask)->x11PictureHandle(), + picture, 0, 0, 0, 0, 0, 0, w, h); + } else +#endif + if (depth() == 1) { + XGCValues vals; + vals.function = GXand; + GC gc = XCreateGC(xinfo.display(), hd, GCFunction, &vals); + XCopyArea(xinfo.display(), qt_x11Pixmap(newmask)->handle(), hd, gc, 0, 0, + width(), height(), 0, 0); + XFreeGC(xinfo.display(), gc); + } else { + // ##### should or the masks together + if (x11_mask) { + XFreePixmap(xinfo.display(), x11_mask); +#if QT_CONFIG(xrender) + if (mask_picture) + XRenderFreePicture(xinfo.display(), mask_picture); +#endif + } + x11_mask = QX11PlatformPixmap::bitmap_to_mask(newmask, xinfo.screen()); +#if QT_CONFIG(xrender) + if (picture) { + mask_picture = XRenderCreatePicture(xinfo.display(), x11_mask, + XRenderFindStandardFormat(xinfo.display(), PictStandardA1), 0, 0); + XRenderPictureAttributes attrs; + attrs.alpha_map = mask_picture; + XRenderChangePicture(xinfo.display(), picture, CPAlphaMap, &attrs); + } +#endif + } +} + +bool QX11PlatformPixmap::hasAlphaChannel() const +{ + if (picture && d == 32) + return true; + + if (x11_mask && d == 1) + return true; + + return false; +} + +QPixmap QX11PlatformPixmap::transformed(const QTransform &transform, Qt::TransformationMode mode) const +{ + if (mode == Qt::SmoothTransformation || transform.type() >= QTransform::TxProject) { + QImage image = toImage(); + return QPixmap::fromImage(image.transformed(transform, mode)); + } + + uint w = 0; + uint h = 0; // size of target pixmap + uint ws, hs; // size of source pixmap + uchar *dptr; // data in target pixmap + uint dbpl, dbytes; // bytes per line/bytes total + uchar *sptr; // data in original pixmap + int sbpl; // bytes per line in original + int bpp; // bits per pixel + bool depth1 = depth() == 1; + Display *dpy = xinfo.display(); + + ws = width(); + hs = height(); + + QTransform mat(transform.m11(), transform.m12(), transform.m13(), + transform.m21(), transform.m22(), transform.m23(), + 0., 0., 1); + bool complex_xform = false; + qreal scaledWidth; + qreal scaledHeight; + + if (mat.type() <= QTransform::TxScale) { + scaledHeight = qAbs(mat.m22()) * hs + 0.9999; + scaledWidth = qAbs(mat.m11()) * ws + 0.9999; + h = qAbs(int(scaledHeight)); + w = qAbs(int(scaledWidth)); + } else { // rotation or shearing + QPolygonF a(QRectF(0, 0, ws, hs)); + a = mat.map(a); + QRect r = a.boundingRect().toAlignedRect(); + w = r.width(); + h = r.height(); + scaledWidth = w; + scaledHeight = h; + complex_xform = true; + } + mat = QPixmap::trueMatrix(mat, ws, hs); // true matrix + + bool invertible; + mat = mat.inverted(&invertible); // invert matrix + + if (h == 0 || w == 0 || !invertible + || qAbs(scaledWidth) >= 32768 || qAbs(scaledHeight) >= 32768 ) + // error, return null pixmap + return QPixmap(); + + XImage *xi = XGetImage(xinfo.display(), handle(), 0, 0, ws, hs, AllPlanes, + depth1 ? XYPixmap : ZPixmap); + + if (!xi) + return QPixmap(); + + sbpl = xi->bytes_per_line; + sptr = (uchar *)xi->data; + bpp = xi->bits_per_pixel; + + if (depth1) + dbpl = (w+7)/8; + else + dbpl = ((w*bpp+31)/32)*4; + dbytes = dbpl*h; + + dptr = (uchar *)malloc(dbytes); // create buffer for bits + Q_CHECK_PTR(dptr); + if (depth1) // fill with zeros + memset(dptr, 0, dbytes); + else if (bpp == 8) // fill with background color + memset(dptr, WhitePixel(xinfo.display(), xinfo.screen()), dbytes); + else + memset(dptr, 0, dbytes); + + // #define QT_DEBUG_XIMAGE +#if defined(QT_DEBUG_XIMAGE) + qDebug("----IMAGE--INFO--------------"); + qDebug("width............. %d", xi->width); + qDebug("height............ %d", xi->height); + qDebug("xoffset........... %d", xi->xoffset); + qDebug("format............ %d", xi->format); + qDebug("byte order........ %d", xi->byte_order); + qDebug("bitmap unit....... %d", xi->bitmap_unit); + qDebug("bitmap bit order.. %d", xi->bitmap_bit_order); + qDebug("depth............. %d", xi->depth); + qDebug("bytes per line.... %d", xi->bytes_per_line); + qDebug("bits per pixel.... %d", xi->bits_per_pixel); +#endif + + int type; + if (xi->bitmap_bit_order == MSBFirst) + type = QT_XFORM_TYPE_MSBFIRST; + else + type = QT_XFORM_TYPE_LSBFIRST; + int xbpl, p_inc; + if (depth1) { + xbpl = (w+7)/8; + p_inc = dbpl - xbpl; + } else { + xbpl = (w*bpp)/8; + p_inc = dbpl - xbpl; + } + + if (!qt_xForm_helper(mat, xi->xoffset, type, bpp, dptr, xbpl, p_inc, h, sptr, sbpl, ws, hs)){ + qWarning("QPixmap::transform: display not supported (bpp=%d)",bpp); + QPixmap pm; + return pm; + } + + qSafeXDestroyImage(xi); + + if (depth1) { // mono bitmap + QBitmap bm = QBitmap::fromData(QSize(w, h), dptr, + BitmapBitOrder(xinfo.display()) == MSBFirst + ? QImage::Format_Mono + : QImage::Format_MonoLSB); + free(dptr); + return bm; + } else { // color pixmap + QX11PlatformPixmap *x11Data = new QX11PlatformPixmap(QPlatformPixmap::PixmapType); + QPixmap pm(x11Data); + x11Data->flags &= ~QX11PlatformPixmap::Uninitialized; + x11Data->xinfo = xinfo; + x11Data->d = d; + x11Data->w = w; + x11Data->h = h; + x11Data->is_null = (w <= 0 || h <= 0); + x11Data->hd = XCreatePixmap(xinfo.display(), + RootWindow(xinfo.display(), xinfo.screen()), + w, h, d); + x11Data->setSerialNumber(qt_pixmap_serial.fetchAndAddRelaxed(1)); + +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + XRenderPictFormat *format = x11Data->d == 32 + ? XRenderFindStandardFormat(xinfo.display(), PictStandardARGB32) + : XRenderFindVisualFormat(xinfo.display(), (Visual *) x11Data->xinfo.visual()); + x11Data->picture = XRenderCreatePicture(xinfo.display(), x11Data->hd, format, 0, 0); + } +#endif // QT_CONFIG(xrender) + + GC gc = XCreateGC(xinfo.display(), x11Data->hd, 0, 0); + xi = XCreateImage(dpy, (Visual*)x11Data->xinfo.visual(), + x11Data->d, + ZPixmap, 0, (char *)dptr, w, h, 32, 0); + XPutImage(dpy, qt_x11Pixmap(pm)->handle(), gc, xi, 0, 0, 0, 0, w, h); + qSafeXDestroyImage(xi); + XFreeGC(xinfo.display(), gc); + + if (x11_mask) { // xform mask, too + pm.setMask(mask_to_bitmap(xinfo.screen()).transformed(transform)); + } else if (d != 32 && complex_xform) { // need a mask! + QBitmap mask(ws, hs); + mask.fill(Qt::color1); + pm.setMask(mask.transformed(transform)); + } + return pm; + } +} + +QImage QX11PlatformPixmap::toImage() const +{ + return toImage(QRect(0, 0, w, h)); +} + +QImage QX11PlatformPixmap::toImage(const QRect &rect) const +{ + Window root_return; + int x_return; + int y_return; + unsigned int width_return; + unsigned int height_return; + unsigned int border_width_return; + unsigned int depth_return; + + XGetGeometry(xinfo.display(), hd, &root_return, &x_return, &y_return, &width_return, &height_return, &border_width_return, &depth_return); + + QXImageWrapper xiWrapper; + xiWrapper.xi = XGetImage(xinfo.display(), hd, rect.x(), rect.y(), rect.width(), rect.height(), + AllPlanes, (depth() == 1) ? XYPixmap : ZPixmap); + + Q_CHECK_PTR(xiWrapper.xi); + if (!xiWrapper.xi) + return QImage(); + + if (!x11_mask && canTakeQImageFromXImage(xiWrapper)) + return takeQImageFromXImage(xiWrapper); + + QImage image = toImage(xiWrapper, rect); + qSafeXDestroyImage(xiWrapper.xi); + return image; +} + +#if QT_CONFIG(xrender) +static XRenderPictFormat *qt_renderformat_for_depth(const QXcbX11Info &xinfo, int depth) +{ + if (depth == 1) + return XRenderFindStandardFormat(xinfo.display(), PictStandardA1); + else if (depth == 32) + return XRenderFindStandardFormat(xinfo.display(), PictStandardARGB32); + else + return XRenderFindVisualFormat(xinfo.display(), (Visual *)xinfo.visual()); +} +#endif + +Q_GLOBAL_STATIC(QX11PaintEngine, qt_x11_paintengine) + +QPaintEngine *QX11PlatformPixmap::paintEngine() const +{ + QX11PlatformPixmap *that = const_cast<QX11PlatformPixmap*>(this); + + if ((flags & Readonly)/* && share_mode == QPixmap::ImplicitlyShared*/) { + // if someone wants to draw onto us, copy the shared contents + // and turn it into a fully fledged QPixmap + ::Pixmap hd_copy = XCreatePixmap(xinfo.display(), RootWindow(xinfo.display(), xinfo.screen()), + w, h, d); +#if QT_CONFIG(xrender) + if (picture && d == 32) { + XRenderPictFormat *format = qt_renderformat_for_depth(xinfo, d); + ::Picture picture_copy = XRenderCreatePicture(xinfo.display(), + hd_copy, format, + 0, 0); + + XRenderComposite(xinfo.display(), PictOpSrc, picture, 0, picture_copy, + 0, 0, 0, 0, 0, 0, w, h); + XRenderFreePicture(xinfo.display(), picture); + that->picture = picture_copy; + } else +#endif + { + GC gc = XCreateGC(xinfo.display(), hd_copy, 0, 0); + XCopyArea(xinfo.display(), hd, hd_copy, gc, 0, 0, w, h, 0, 0); + XFreeGC(xinfo.display(), gc); + } + that->hd = hd_copy; + that->flags &= ~QX11PlatformPixmap::Readonly; + } + + if (qt_x11_paintengine->isActive()) { + if (!that->pengine) + that->pengine = new QX11PaintEngine; + + return that->pengine; + } + + return qt_x11_paintengine(); +} + +qreal QX11PlatformPixmap::devicePixelRatio() const +{ + return dpr; +} + +void QX11PlatformPixmap::setDevicePixelRatio(qreal scaleFactor) +{ + dpr = scaleFactor; +} + +Pixmap QX11PlatformPixmap::x11ConvertToDefaultDepth() +{ +#if QT_CONFIG(xrender) + if (d == xinfo.appDepth() || !X11->use_xrender) + return hd; + if (!hd2) { + hd2 = XCreatePixmap(xinfo.display(), hd, w, h, xinfo.appDepth()); + XRenderPictFormat *format = XRenderFindVisualFormat(xinfo.display(), + (Visual*) xinfo.visual()); + Picture pic = XRenderCreatePicture(xinfo.display(), hd2, format, 0, 0); + XRenderComposite(xinfo.display(), PictOpSrc, picture, + XNone, pic, 0, 0, 0, 0, 0, 0, w, h); + XRenderFreePicture(xinfo.display(), pic); + } + return hd2; +#else + return hd; +#endif +} + +XID QX11PlatformPixmap::createBitmapFromImage(const QImage &image) +{ + QImage img = image.convertToFormat(QImage::Format_MonoLSB); + const QRgb c0 = QColor(Qt::black).rgb(); + const QRgb c1 = QColor(Qt::white).rgb(); + if (img.color(0) == c0 && img.color(1) == c1) { + img.invertPixels(); + img.setColor(0, c1); + img.setColor(1, c0); + } + + char *bits; + uchar *tmp_bits; + int w = img.width(); + int h = img.height(); + int bpl = (w + 7) / 8; + int ibpl = img.bytesPerLine(); + if (bpl != ibpl) { + tmp_bits = new uchar[bpl*h]; + bits = (char *)tmp_bits; + uchar *p, *b; + int y; + b = tmp_bits; + p = img.scanLine(0); + for (y = 0; y < h; y++) { + memcpy(b, p, bpl); + b += bpl; + p += ibpl; + } + } else { + bits = (char *)img.bits(); + tmp_bits = 0; + } + XID hd = XCreateBitmapFromData(QXcbX11Info::display(), + QXcbX11Info::appRootWindow(), + bits, w, h); + if (tmp_bits) // Avoid purify complaint + delete [] tmp_bits; + return hd; +} + +#if QT_CONFIG(xrender) +void QX11PlatformPixmap::convertToARGB32(bool preserveContents) +{ + if (!X11->use_xrender) + return; + + // Q_ASSERT(count == 1); + if ((flags & Readonly)/* && share_mode == QPixmap::ExplicitlyShared*/) + return; + + Pixmap pm = XCreatePixmap(xinfo.display(), RootWindow(xinfo.display(), xinfo.screen()), + w, h, 32); + Picture p = XRenderCreatePicture(xinfo.display(), pm, + XRenderFindStandardFormat(xinfo.display(), PictStandardARGB32), 0, 0); + if (picture) { + if (preserveContents) + XRenderComposite(xinfo.display(), PictOpSrc, picture, 0, p, 0, 0, 0, 0, 0, 0, w, h); + if (!(flags & Readonly)) + XRenderFreePicture(xinfo.display(), picture); + } + if (hd && !(flags & Readonly)) + XFreePixmap(xinfo.display(), hd); + if (x11_mask) { + XFreePixmap(xinfo.display(), x11_mask); + if (mask_picture) + XRenderFreePicture(xinfo.display(), mask_picture); + x11_mask = 0; + mask_picture = 0; + } + hd = pm; + picture = p; + + d = 32; + xinfo.setDepth(32); + + XVisualInfo visinfo; + if (XMatchVisualInfo(xinfo.display(), xinfo.screen(), 32, TrueColor, &visinfo)) + xinfo.setVisual(visinfo.visual); +} +#endif + +void QX11PlatformPixmap::release() +{ + delete pengine; + pengine = 0; + + if (/*!X11*/ QCoreApplication::closingDown()) { + // At this point, the X server will already have freed our resources, + // so there is nothing to do. + return; + } + + if (x11_mask) { +#if QT_CONFIG(xrender) + if (mask_picture) + XRenderFreePicture(xinfo.display(), mask_picture); + mask_picture = 0; +#endif + XFreePixmap(xinfo.display(), x11_mask); + x11_mask = 0; + } + + if (hd) { +#if QT_CONFIG(xrender) + if (picture) { + XRenderFreePicture(xinfo.display(), picture); + picture = 0; + } +#endif // QT_CONFIG(xrender) + + if (hd2) { + XFreePixmap(xinfo.display(), hd2); + hd2 = 0; + } + if (!(flags & Readonly)) + XFreePixmap(xinfo.display(), hd); + hd = 0; + } +} + +QImage QX11PlatformPixmap::toImage(const QXImageWrapper &xiWrapper, const QRect &rect) const +{ + XImage *xi = xiWrapper.xi; + + int d = depth(); + Visual *visual = (Visual *)xinfo.visual(); + bool trucol = (visual->c_class >= TrueColor) && d > 1; + + QImage::Format format = QImage::Format_Mono; + if (d > 1 && d <= 8) { + d = 8; + format = QImage::Format_Indexed8; + } + // we could run into the situation where d == 8 AND trucol is true, which can + // cause problems when converting to and from images. in this case, always treat + // the depth as 32... + if (d > 8 || trucol) { + d = 32; + format = QImage::Format_RGB32; + } + + if (d == 1 && xi->bitmap_bit_order == LSBFirst) + format = QImage::Format_MonoLSB; + if (x11_mask && format == QImage::Format_RGB32) + format = QImage::Format_ARGB32; + + QImage image(xi->width, xi->height, format); + image.setDevicePixelRatio(devicePixelRatio()); + if (image.isNull()) // could not create image + return image; + + QImage alpha; + if (x11_mask) { + if (rect.contains(QRect(0, 0, w, h))) + alpha = mask().toImage(); + else + alpha = mask().toImage().copy(rect); + } + bool ale = alpha.format() == QImage::Format_MonoLSB; + + if (trucol) { // truecolor + const uint red_mask = (uint)visual->red_mask; + const uint green_mask = (uint)visual->green_mask; + const uint blue_mask = (uint)visual->blue_mask; + const int red_shift = highest_bit(red_mask) - 7; + const int green_shift = highest_bit(green_mask) - 7; + const int blue_shift = highest_bit(blue_mask) - 7; + + const uint red_bits = n_bits(red_mask); + const uint green_bits = n_bits(green_mask); + const uint blue_bits = n_bits(blue_mask); + + static uint red_table_bits = 0; + static uint green_table_bits = 0; + static uint blue_table_bits = 0; + + if (red_bits < 8 && red_table_bits != red_bits) { + build_scale_table(&red_scale_table, red_bits); + red_table_bits = red_bits; + } + if (blue_bits < 8 && blue_table_bits != blue_bits) { + build_scale_table(&blue_scale_table, blue_bits); + blue_table_bits = blue_bits; + } + if (green_bits < 8 && green_table_bits != green_bits) { + build_scale_table(&green_scale_table, green_bits); + green_table_bits = green_bits; + } + + int r, g, b; + + QRgb *dst; + uchar *src; + uint pixel; + int bppc = xi->bits_per_pixel; + + if (bppc > 8 && xi->byte_order == LSBFirst) + bppc++; + + for (int y = 0; y < xi->height; ++y) { + uchar* asrc = x11_mask ? alpha.scanLine(y) : 0; + dst = (QRgb *)image.scanLine(y); + src = (uchar *)xi->data + xi->bytes_per_line*y; + for (int x = 0; x < xi->width; x++) { + switch (bppc) { + case 8: + pixel = *src++; + break; + case 16: // 16 bit MSB + pixel = src[1] | (uint)src[0] << 8; + src += 2; + break; + case 17: // 16 bit LSB + pixel = src[0] | (uint)src[1] << 8; + src += 2; + break; + case 24: // 24 bit MSB + pixel = src[2] | (uint)src[1] << 8 | (uint)src[0] << 16; + src += 3; + break; + case 25: // 24 bit LSB + pixel = src[0] | (uint)src[1] << 8 | (uint)src[2] << 16; + src += 3; + break; + case 32: // 32 bit MSB + pixel = src[3] | (uint)src[2] << 8 | (uint)src[1] << 16 | (uint)src[0] << 24; + src += 4; + break; + case 33: // 32 bit LSB + pixel = src[0] | (uint)src[1] << 8 | (uint)src[2] << 16 | (uint)src[3] << 24; + src += 4; + break; + default: // should not really happen + x = xi->width; // leave loop + y = xi->height; + pixel = 0; // eliminate compiler warning + qWarning("QPixmap::convertToImage: Invalid depth %d", bppc); + } + if (red_shift > 0) + r = (pixel & red_mask) >> red_shift; + else + r = (pixel & red_mask) << -red_shift; + if (green_shift > 0) + g = (pixel & green_mask) >> green_shift; + else + g = (pixel & green_mask) << -green_shift; + if (blue_shift > 0) + b = (pixel & blue_mask) >> blue_shift; + else + b = (pixel & blue_mask) << -blue_shift; + + if (red_bits < 8) + r = red_scale_table[r]; + if (green_bits < 8) + g = green_scale_table[g]; + if (blue_bits < 8) + b = blue_scale_table[b]; + + if (x11_mask) { + if (ale) { + *dst++ = (asrc[x >> 3] & (1 << (x & 7))) ? qRgba(r, g, b, 0xff) : 0; + } else { + *dst++ = (asrc[x >> 3] & (0x80 >> (x & 7))) ? qRgba(r, g, b, 0xff) : 0; + } + } else { + *dst++ = qRgb(r, g, b); + } + } + } + } else if (xi->bits_per_pixel == d) { // compatible depth + char *xidata = xi->data; // copy each scanline + int bpl = qMin(image.bytesPerLine(),xi->bytes_per_line); + for (int y=0; y<xi->height; y++) { + memcpy(image.scanLine(y), xidata, bpl); + xidata += xi->bytes_per_line; + } + } else { + /* Typically 2 or 4 bits display depth */ + qWarning("QPixmap::convertToImage: Display not supported (bpp=%d)", + xi->bits_per_pixel); + return QImage(); + } + + if (d == 1) { // bitmap + image.setColorCount(2); + image.setColor(0, qRgb(255,255,255)); + image.setColor(1, qRgb(0,0,0)); + } else if (!trucol) { // pixmap with colormap + register uchar *p; + uchar *end; + uchar use[256]; // pixel-in-use table + uchar pix[256]; // pixel translation table + int ncols, bpl; + memset(use, 0, 256); + memset(pix, 0, 256); + bpl = image.bytesPerLine(); + + if (x11_mask) { // which pixels are used? + for (int i = 0; i < xi->height; i++) { + uchar* asrc = alpha.scanLine(i); + p = image.scanLine(i); + if (ale) { + for (int x = 0; x < xi->width; x++) { + if (asrc[x >> 3] & (1 << (x & 7))) + use[*p] = 1; + ++p; + } + } else { + for (int x = 0; x < xi->width; x++) { + if (asrc[x >> 3] & (0x80 >> (x & 7))) + use[*p] = 1; + ++p; + } + } + } + } else { + for (int i = 0; i < xi->height; i++) { + p = image.scanLine(i); + end = p + bpl; + while (p < end) + use[*p++] = 1; + } + } + ncols = 0; + for (int i = 0; i < 256; i++) { // build translation table + if (use[i]) + pix[i] = ncols++; + } + for (int i = 0; i < xi->height; i++) { // translate pixels + p = image.scanLine(i); + end = p + bpl; + while (p < end) { + *p = pix[*p]; + p++; + } + } + if (x11_mask) { + int trans; + if (ncols < 256) { + trans = ncols++; + image.setColorCount(ncols); // create color table + image.setColor(trans, 0x00000000); + } else { + image.setColorCount(ncols); // create color table + // oh dear... no spare "transparent" pixel. + // use first pixel in image (as good as any). + trans = image.scanLine(0)[0]; + } + for (int i = 0; i < xi->height; i++) { + uchar* asrc = alpha.scanLine(i); + p = image.scanLine(i); + if (ale) { + for (int x = 0; x < xi->width; x++) { + if (!(asrc[x >> 3] & (1 << (x & 7)))) + *p = trans; + ++p; + } + } else { + for (int x = 0; x < xi->width; x++) { + if (!(asrc[x >> 3] & (1 << (7 -(x & 7))))) + *p = trans; + ++p; + } + } + } + } else { + image.setColorCount(ncols); // create color table + } + QVector<QColor> colors = QXcbColormap::instance(xinfo.screen()).colormap(); + int j = 0; + for (int i=0; i<colors.size(); i++) { // translate pixels + if (use[i]) + image.setColor(j++, 0xff000000 | colors.at(i).rgb()); + } + } + + return image; +} + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h new file mode 100644 index 0000000000..2cbd1fe3d0 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h @@ -0,0 +1,160 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QX11PLATFORMPIXMAP_H +#define QX11PLATFORMPIXMAP_H + +#include <QBitmap> +#include <QPixmap> + +#include <qpa/qplatformpixmap.h> +#include "qxcbnativepainting.h" + +typedef unsigned long XID; +typedef XID Drawable; +typedef XID Picture; +typedef XID Pixmap; + +QT_BEGIN_NAMESPACE + +class QX11PaintEngine; +struct QXImageWrapper; + +class QX11PlatformPixmap : public QPlatformPixmap +{ +public: + QX11PlatformPixmap(PixelType pixelType); + ~QX11PlatformPixmap(); + + QPlatformPixmap *createCompatiblePlatformPixmap() const Q_DECL_OVERRIDE; + void resize(int width, int height) Q_DECL_OVERRIDE; + void fromImage(const QImage &img, Qt::ImageConversionFlags flags) Q_DECL_OVERRIDE; + void copy(const QPlatformPixmap *data, const QRect &rect) Q_DECL_OVERRIDE; + bool scroll(int dx, int dy, const QRect &rect) Q_DECL_OVERRIDE; + int metric(QPaintDevice::PaintDeviceMetric metric) const Q_DECL_OVERRIDE; + void fill(const QColor &fillColor) Q_DECL_OVERRIDE; + QBitmap mask() const Q_DECL_OVERRIDE; + void setMask(const QBitmap &mask) Q_DECL_OVERRIDE; + bool hasAlphaChannel() const Q_DECL_OVERRIDE; + QPixmap transformed(const QTransform &matrix, Qt::TransformationMode mode) const Q_DECL_OVERRIDE; + QImage toImage() const Q_DECL_OVERRIDE; + QImage toImage(const QRect &rect) const Q_DECL_OVERRIDE; + QPaintEngine *paintEngine() const Q_DECL_OVERRIDE; + qreal devicePixelRatio() const Q_DECL_OVERRIDE; + void setDevicePixelRatio(qreal scaleFactor) Q_DECL_OVERRIDE; + + inline Drawable handle() const { return hd; } + inline Picture x11PictureHandle() const { return picture; } + inline const QXcbX11Info *x11_info() const { return &xinfo; } + + Pixmap x11ConvertToDefaultDepth(); + static XID createBitmapFromImage(const QImage &image); + +#if QT_CONFIG(xrender) + void convertToARGB32(bool preserveContents = true); +#endif + +private: + friend class QX11PaintEngine; + friend const QXcbX11Info &qt_x11Info(const QPixmap &pixmap); + friend void qt_x11SetScreen(QPixmap &pixmap, int screen); + + void release(); + QImage toImage(const QXImageWrapper &xi, const QRect &rect) const; + QBitmap mask_to_bitmap(int screen) const; + static Pixmap bitmap_to_mask(const QBitmap &, int screen); + void bitmapFromImage(const QImage &image); + bool canTakeQImageFromXImage(const QXImageWrapper &xi) const; + QImage takeQImageFromXImage(const QXImageWrapper &xi) const; + + Pixmap hd = 0; + + enum Flag { + NoFlags = 0x0, + Uninitialized = 0x1, + Readonly = 0x2, + InvertedWhenBoundToTexture = 0x4, + GlSurfaceCreatedWithAlpha = 0x8 + }; + uint flags; + + QXcbX11Info xinfo; + Pixmap x11_mask; + Picture picture; + Picture mask_picture; + Pixmap hd2; // sorted in the default display depth + //QPixmap::ShareMode share_mode; + qreal dpr; + + QX11PaintEngine *pengine; +}; + +inline QX11PlatformPixmap *qt_x11Pixmap(const QPixmap &pixmap) +{ + return (pixmap.handle() && pixmap.handle()->classId() == QPlatformPixmap::X11Class) + ? static_cast<QX11PlatformPixmap *>(pixmap.handle()) + : Q_NULLPTR; +} + +inline Picture qt_x11PictureHandle(const QPixmap &pixmap) +{ + if (QX11PlatformPixmap *pm = qt_x11Pixmap(pixmap)) + return pm->x11PictureHandle(); + + return 0; +} + +inline Pixmap qt_x11PixmapHandle(const QPixmap &pixmap) +{ + if (QX11PlatformPixmap *pm = qt_x11Pixmap(pixmap)) + return pm->handle(); + + return 0; +} + +inline const QXcbX11Info &qt_x11Info(const QPixmap &pixmap) +{ + if (QX11PlatformPixmap *pm = qt_x11Pixmap(pixmap)) { + return pm->xinfo; + } else { + static QXcbX11Info nullX11Info; + return nullX11Info; + } +} + +int qt_x11SetDefaultScreen(int screen); +void qt_x11SetScreen(QPixmap &pixmap, int screen); + +QT_END_NAMESPACE + +#endif // QX11PLATFORMPIXMAP_H diff --git a/src/plugins/platforms/xcb/nativepainting/qt_x11_p.h b/src/plugins/platforms/xcb/nativepainting/qt_x11_p.h new file mode 100644 index 0000000000..a0e5131ea7 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qt_x11_p.h @@ -0,0 +1,193 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QT_X11_P_H +#define QT_X11_P_H + +#include <X11/Xlib.h> +#include <X11/Xatom.h> + +#if QT_CONFIG(xrender) +# include "qtessellator_p.h" +# include <X11/extensions/Xrender.h> +#endif + +#if QT_CONFIG(fontconfig) +#include <fontconfig/fontconfig.h> +#endif + +#if defined(FT_LCD_FILTER_H) +#include FT_LCD_FILTER_H +#endif + +#if defined(FC_LCD_FILTER) + +#ifndef FC_LCD_FILTER_NONE +#define FC_LCD_FILTER_NONE FC_LCD_NONE +#endif + +#ifndef FC_LCD_FILTER_DEFAULT +#define FC_LCD_FILTER_DEFAULT FC_LCD_DEFAULT +#endif + +#ifndef FC_LCD_FILTER_LIGHT +#define FC_LCD_FILTER_LIGHT FC_LCD_LIGHT +#endif + +#ifndef FC_LCD_FILTER_LEGACY +#define FC_LCD_FILTER_LEGACY FC_LCD_LEGACY +#endif + +#endif + +QT_BEGIN_NAMESPACE + +// rename a couple of X defines to get rid of name clashes +// resolve the conflict between X11's FocusIn and QEvent::FocusIn +enum { + XFocusOut = FocusOut, + XFocusIn = FocusIn, + XKeyPress = KeyPress, + XKeyRelease = KeyRelease, + XNone = None, + XRevertToParent = RevertToParent, + XGrayScale = GrayScale, + XCursorShape = CursorShape, +}; +#undef FocusOut +#undef FocusIn +#undef KeyPress +#undef KeyRelease +#undef None +#undef RevertToParent +#undef GrayScale +#undef CursorShape + +#ifdef FontChange +#undef FontChange +#endif + +Q_DECLARE_TYPEINFO(XPoint, Q_PRIMITIVE_TYPE); +Q_DECLARE_TYPEINFO(XRectangle, Q_PRIMITIVE_TYPE); +Q_DECLARE_TYPEINFO(XChar2b, Q_PRIMITIVE_TYPE); +#if QT_CONFIG(xrender) +Q_DECLARE_TYPEINFO(XGlyphElt32, Q_PRIMITIVE_TYPE); +#endif + +struct QX11InfoData; + +enum DesktopEnvironment { + DE_UNKNOWN, + DE_KDE, + DE_GNOME, + DE_CDE, + DE_MEEGO_COMPOSITOR, + DE_4DWM +}; + +struct QXcbX11Data { + Display *display = nullptr; + + // true if Qt is compiled w/ RENDER support and RENDER is supported on the connected Display + bool use_xrender = false; + int xrender_major = 0; + int xrender_version = 0; + + QX11InfoData *screens = nullptr; + Visual **argbVisuals = nullptr; + Colormap *argbColormaps = nullptr; + int screenCount = 0; + int defaultScreen = 0; + + // options + int visual_class = 0; + int visual_id = 0; + int color_count = 0; + bool custom_cmap = false; + + // outside visual/colormap + Visual *visual = nullptr; + Colormap colormap = 0; + +#if QT_CONFIG(xrender) + enum { solid_fill_count = 16 }; + struct SolidFills { + XRenderColor color; + int screen; + Picture picture; + } solid_fills[solid_fill_count]; + enum { pattern_fill_count = 16 }; + struct PatternFills { + XRenderColor color; + XRenderColor bg_color; + int screen; + int style; + bool opaque; + Picture picture; + } pattern_fills[pattern_fill_count]; + Picture getSolidFill(int screen, const QColor &c); + XRenderColor preMultiply(const QColor &c); +#endif + + bool fc_antialias = true; + int fc_hint_style = 0; + + DesktopEnvironment desktopEnvironment = DE_GNOME; +}; + +extern QXcbX11Data *qt_x11Data; +#define X11 qt_x11Data + +struct QX11InfoData { + int screen; + int dpiX; + int dpiY; + int depth; + int cells; + Colormap colormap; + Visual *visual; + bool defaultColormap; + bool defaultVisual; + int subpixel = 0; +}; + +template <class T> +Q_DECL_RELAXED_CONSTEXPR inline int lowest_bit(T v) Q_DECL_NOTHROW +{ + int result = qCountTrailingZeroBits(v); + return ((result >> 3) == sizeof(T)) ? -1 : result; +} + +QT_END_NAMESPACE + +#endif // QT_X11_P_H diff --git a/src/plugins/platforms/xcb/nativepainting/qtessellator.cpp b/src/plugins/platforms/xcb/nativepainting/qtessellator.cpp new file mode 100644 index 0000000000..7ffdef54f0 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qtessellator.cpp @@ -0,0 +1,1491 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qtessellator_p.h" + +#include <QRect> +#include <QList> +#include <QDebug> + +#include <qmath.h> +#include <limits.h> +#include <algorithm> + +QT_BEGIN_NAMESPACE + +//#define DEBUG +#ifdef DEBUG +#define QDEBUG qDebug +#else +#define QDEBUG if (1){} else qDebug +#endif + +static const bool emit_clever = true; +static const bool mark_clever = false; + +enum VertexFlags { + LineBeforeStarts = 0x1, + LineBeforeEnds = 0x2, + LineBeforeHorizontal = 0x4, + LineAfterStarts = 0x8, + LineAfterEnds = 0x10, + LineAfterHorizontal = 0x20 +}; + + + +class QTessellatorPrivate { +public: + struct Vertices; + + QTessellatorPrivate() {} + + QRectF collectAndSortVertices(const QPointF *points, int *maxActiveEdges); + void cancelCoincidingEdges(); + + void emitEdges(QTessellator *tessellator); + void processIntersections(); + void removeEdges(); + void addEdges(); + void addIntersections(); + + struct Vertex : public QTessellator::Vertex + { + int flags; + }; + + struct Intersection + { + Q27Dot5 y; + int edge; + bool operator <(const Intersection &other) const { + if (y != other.y) + return y < other.y; + return edge < other.edge; + } + }; + struct IntersectionLink + { + int next; + int prev; + }; + typedef QMap<Intersection, IntersectionLink> Intersections; + + struct Edge { + Edge(const Vertices &v, int _edge); + int edge; + const Vertex *v0; + const Vertex *v1; + Q27Dot5 y_left; + Q27Dot5 y_right; + signed int winding : 8; + bool mark; + bool free; + bool intersect_left; + bool intersect_right; + bool isLeftOf(const Edge &other, Q27Dot5 y) const; + Q27Dot5 positionAt(Q27Dot5 y) const; + bool intersect(const Edge &other, Q27Dot5 *y, bool *det_positive) const; + + }; + + class EdgeSorter + { + public: + EdgeSorter(int _y) : y(_y) {} + bool operator() (const Edge *e1, const Edge *e2); + int y; + }; + + class Scanline { + public: + Scanline(); + ~Scanline(); + + void init(int maxActiveEdges); + void done(); + + int findEdgePosition(Q27Dot5 x, Q27Dot5 y) const; + int findEdgePosition(const Edge &e) const; + int findEdge(int edge) const; + void clearMarks(); + + void swap(int p1, int p2) { + Edge *tmp = edges[p1]; + edges[p1] = edges[p2]; + edges[p2] = tmp; + } + void insert(int pos, const Edge &e); + void removeAt(int pos); + void markEdges(int pos1, int pos2); + + void prepareLine(); + void lineDone(); + + Edge **old; + int old_size; + + Edge **edges; + int size; + + private: + Edge *edge_table; + int first_unused; + int max_edges; + enum { default_alloc = 32 }; + }; + + struct Vertices { + enum { default_alloc = 128 }; + Vertices(); + ~Vertices(); + void init(int maxVertices); + void done(); + Vertex *storage; + Vertex **sorted; + + Vertex *operator[] (int i) { return storage + i; } + const Vertex *operator[] (int i) const { return storage + i; } + int position(const Vertex *v) const { + return v - storage; + } + Vertex *next(Vertex *v) { + ++v; + if (v == storage + nPoints) + v = storage; + return v; + } + const Vertex *next(const Vertex *v) const { + ++v; + if (v == storage + nPoints) + v = storage; + return v; + } + int nextPos(const Vertex *v) const { + ++v; + if (v == storage + nPoints) + return 0; + return v - storage; + } + Vertex *prev(Vertex *v) { + if (v == storage) + v = storage + nPoints; + --v; + return v; + } + const Vertex *prev(const Vertex *v) const { + if (v == storage) + v = storage + nPoints; + --v; + return v; + } + int prevPos(const Vertex *v) const { + if (v == storage) + v = storage + nPoints; + --v; + return v - storage; + } + int nPoints; + int allocated; + }; + Vertices vertices; + Intersections intersections; + Scanline scanline; + bool winding; + Q27Dot5 y; + int currentVertex; + +private: + void addIntersection(const Edge *e1, const Edge *e2); + bool edgeInChain(Intersection i, int edge); +}; + + +QTessellatorPrivate::Edge::Edge(const QTessellatorPrivate::Vertices &vertices, int edge) +{ + this->edge = edge; + intersect_left = intersect_right = true; + mark = false; + free = false; + + v0 = vertices[edge]; + v1 = vertices.next(v0); + + Q_ASSERT(v0->y != v1->y); + + if (v0->y > v1->y) { + qSwap(v0, v1); + winding = -1; + } else { + winding = 1; + } + y_left = y_right = v0->y; +} + +// This is basically the algorithm from graphics gems. The algorithm +// is cubic in the coordinates at one place. Since we use 64bit +// integers, this implies, that the allowed range for our coordinates +// is limited to 21 bits. With 5 bits behind the decimal, this +// implies that differences in coordaintes can range from 2*SHORT_MIN +// to 2*SHORT_MAX, giving us efficiently a coordinate system from +// SHORT_MIN to SHORT_MAX. +// + +// WARNING: It's absolutely critical that the intersect() and isLeftOf() methods use +// exactly the same algorithm to calulate yi. It's also important to be sure the algorithms +// are transitive (ie. the conditions below are true for all input data): +// +// a.intersect(b) == b.intersect(a) +// a.isLeftOf(b) != b.isLeftOf(a) +// +// This is tricky to get right, so be very careful when changing anything in here! + +static inline bool sameSign(qint64 a, qint64 b) { + return (((qint64) ((quint64) a ^ (quint64) b)) >= 0 ); +} + +bool QTessellatorPrivate::Edge::intersect(const Edge &other, Q27Dot5 *y, bool *det_positive) const +{ + qint64 a1 = v1->y - v0->y; + qint64 b1 = v0->x - v1->x; + + qint64 a2 = other.v1->y - other.v0->y; + qint64 b2 = other.v0->x - other.v1->x; + + qint64 det = a1 * b2 - a2 * b1; + if (det == 0) + return false; + + qint64 c1 = qint64(v1->x) * v0->y - qint64(v0->x) * v1->y; + + qint64 r3 = a1 * other.v0->x + b1 * other.v0->y + c1; + qint64 r4 = a1 * other.v1->x + b1 * other.v1->y + c1; + + // Check signs of r3 and r4. If both point 3 and point 4 lie on + // same side of line 1, the line segments do not intersect. + QDEBUG() << " " << r3 << r4; + if (r3 != 0 && r4 != 0 && sameSign( r3, r4 )) + return false; + + qint64 c2 = qint64(other.v1->x) * other.v0->y - qint64(other.v0->x) * other.v1->y; + + qint64 r1 = a2 * v0->x + b2 * v0->y + c2; + qint64 r2 = a2 * v1->x + b2 * v1->y + c2; + + // Check signs of r1 and r2. If both point 1 and point 2 lie + // on same side of second line segment, the line segments do not intersect. + QDEBUG() << " " << r1 << r2; + if (r1 != 0 && r2 != 0 && sameSign( r1, r2 )) + return false; + + // The det/2 is to get rounding instead of truncating. It + // is added or subtracted to the numerator, depending upon the + // sign of the numerator. + qint64 offset = det < 0 ? -det : det; + offset >>= 1; + + qint64 num = a2 * c1 - a1 * c2; + *y = ( num < 0 ? num - offset : num + offset ) / det; + + *det_positive = (det > 0); + + return true; +} + +#undef SAME_SIGNS + +bool QTessellatorPrivate::Edge::isLeftOf(const Edge &other, Q27Dot5 y) const +{ +// QDEBUG() << "isLeftOf" << edge << other.edge << y; + qint64 a1 = v1->y - v0->y; + qint64 b1 = v0->x - v1->x; + qint64 a2 = other.v1->y - other.v0->y; + qint64 b2 = other.v0->x - other.v1->x; + + qint64 c2 = qint64(other.v1->x) * other.v0->y - qint64(other.v0->x) * other.v1->y; + + qint64 det = a1 * b2 - a2 * b1; + if (det == 0) { + // lines are parallel. Only need to check side of one point + // fixed ordering for coincident edges + qint64 r1 = a2 * v0->x + b2 * v0->y + c2; +// QDEBUG() << "det = 0" << r1; + if (r1 == 0) + return edge < other.edge; + return (r1 < 0); + } + + // not parallel, need to find the y coordinate of the intersection point + qint64 c1 = qint64(v1->x) * v0->y - qint64(v0->x) * v1->y; + + qint64 offset = det < 0 ? -det : det; + offset >>= 1; + + qint64 num = a2 * c1 - a1 * c2; + qint64 yi = ( num < 0 ? num - offset : num + offset ) / det; +// QDEBUG() << " num=" << num << "offset=" << offset << "det=" << det; + + return ((yi > y) ^ (det < 0)); +} + +static inline bool compareVertex(const QTessellatorPrivate::Vertex *p1, + const QTessellatorPrivate::Vertex *p2) +{ + if (p1->y == p2->y) { + if (p1->x == p2->x) + return p1 < p2; + return p1->x < p2->x; + } + return p1->y < p2->y; +} + +Q27Dot5 QTessellatorPrivate::Edge::positionAt(Q27Dot5 y) const +{ + if (y == v0->y) + return v0->x; + else if (y == v1->y) + return v1->x; + + qint64 d = v1->x - v0->x; + return (v0->x + d*(y - v0->y)/(v1->y-v0->y)); +} + +bool QTessellatorPrivate::EdgeSorter::operator() (const Edge *e1, const Edge *e2) +{ + return e1->isLeftOf(*e2, y); +} + + +QTessellatorPrivate::Scanline::Scanline() +{ + edges = 0; + edge_table = 0; + old = 0; +} + +void QTessellatorPrivate::Scanline::init(int maxActiveEdges) +{ + maxActiveEdges *= 2; + if (!edges || maxActiveEdges > default_alloc) { + max_edges = maxActiveEdges; + int s = qMax(maxActiveEdges + 1, default_alloc + 1); + edges = q_check_ptr((Edge **)realloc(edges, s*sizeof(Edge *))); + edge_table = q_check_ptr((Edge *)realloc(edge_table, s*sizeof(Edge))); + old = q_check_ptr((Edge **)realloc(old, s*sizeof(Edge *))); + } + size = 0; + old_size = 0; + first_unused = 0; + for (int i = 0; i < maxActiveEdges; ++i) + edge_table[i].edge = i+1; + edge_table[maxActiveEdges].edge = -1; +} + +void QTessellatorPrivate::Scanline::done() +{ + if (max_edges > default_alloc) { + free(edges); + free(old); + free(edge_table); + edges = 0; + old = 0; + edge_table = 0; + } +} + +QTessellatorPrivate::Scanline::~Scanline() +{ + free(edges); + free(old); + free(edge_table); +} + +int QTessellatorPrivate::Scanline::findEdgePosition(Q27Dot5 x, Q27Dot5 y) const +{ + int min = 0; + int max = size - 1; + while (min < max) { + int pos = min + ((max - min + 1) >> 1); + Q27Dot5 ax = edges[pos]->positionAt(y); + if (ax > x) { + max = pos - 1; + } else { + min = pos; + } + } + return min; +} + +int QTessellatorPrivate::Scanline::findEdgePosition(const Edge &e) const +{ +// qDebug() << ">> findEdgePosition"; + int min = 0; + int max = size; + while (min < max) { + int pos = min + ((max - min) >> 1); +// qDebug() << " " << min << max << pos << edges[pos]->isLeftOf(e, e.y0); + if (edges[pos]->isLeftOf(e, e.v0->y)) { + min = pos + 1; + } else { + max = pos; + } + } +// qDebug() << "<< findEdgePosition got" << min; + return min; +} + +int QTessellatorPrivate::Scanline::findEdge(int edge) const +{ + for (int i = 0; i < size; ++i) { + int item_edge = edges[i]->edge; + if (item_edge == edge) + return i; + } + //Q_ASSERT(false); + return -1; +} + +void QTessellatorPrivate::Scanline::clearMarks() +{ + for (int i = 0; i < size; ++i) { + edges[i]->mark = false; + edges[i]->intersect_left = false; + edges[i]->intersect_right = false; + } +} + +void QTessellatorPrivate::Scanline::prepareLine() +{ + Edge **end = edges + size; + Edge **e = edges; + Edge **o = old; + while (e < end) { + *o = *e; + ++o; + ++e; + } + old_size = size; +} + +void QTessellatorPrivate::Scanline::lineDone() +{ + Edge **end = old + old_size; + Edge **e = old; + while (e < end) { + if ((*e)->free) { + (*e)->edge = first_unused; + first_unused = (*e - edge_table); + } + ++e; + } +} + +void QTessellatorPrivate::Scanline::insert(int pos, const Edge &e) +{ + Edge *edge = edge_table + first_unused; + first_unused = edge->edge; + Q_ASSERT(first_unused != -1); + *edge = e; + memmove(edges + pos + 1, edges + pos, (size - pos)*sizeof(Edge *)); + edges[pos] = edge; + ++size; +} + +void QTessellatorPrivate::Scanline::removeAt(int pos) +{ + Edge *e = edges[pos]; + e->free = true; + --size; + memmove(edges + pos, edges + pos + 1, (size - pos)*sizeof(Edge *)); +} + +void QTessellatorPrivate::Scanline::markEdges(int pos1, int pos2) +{ + if (pos2 < pos1) + return; + + for (int i = pos1; i <= pos2; ++i) + edges[i]->mark = true; +} + + +QTessellatorPrivate::Vertices::Vertices() +{ + storage = 0; + sorted = 0; + allocated = 0; + nPoints = 0; +} + +QTessellatorPrivate::Vertices::~Vertices() +{ + if (storage) { + free(storage); + free(sorted); + } +} + +void QTessellatorPrivate::Vertices::init(int maxVertices) +{ + if (!storage || maxVertices > allocated) { + int size = qMax((int)default_alloc, maxVertices); + storage = q_check_ptr((Vertex *)realloc(storage, size*sizeof(Vertex))); + sorted = q_check_ptr((Vertex **)realloc(sorted, size*sizeof(Vertex *))); + allocated = maxVertices; + } +} + +void QTessellatorPrivate::Vertices::done() +{ + if (allocated > default_alloc) { + free(storage); + free(sorted); + storage = 0; + sorted = 0; + allocated = 0; + } +} + + + +static inline void fillTrapezoid(Q27Dot5 y1, Q27Dot5 y2, int left, int right, + const QTessellatorPrivate::Vertices &vertices, + QTessellator::Trapezoid *trap) +{ + trap->top = y1; + trap->bottom = y2; + const QTessellatorPrivate::Vertex *v = vertices[left]; + trap->topLeft = v; + trap->bottomLeft = vertices.next(v); + if (trap->topLeft->y > trap->bottomLeft->y) + qSwap(trap->topLeft,trap->bottomLeft); + v = vertices[right]; + trap->topRight = v; + trap->bottomRight = vertices.next(v); + if (trap->topRight->y > trap->bottomRight->y) + qSwap(trap->topRight, trap->bottomRight); +} + +QRectF QTessellatorPrivate::collectAndSortVertices(const QPointF *points, int *maxActiveEdges) +{ + *maxActiveEdges = 0; + Vertex *v = vertices.storage; + Vertex **vv = vertices.sorted; + + qreal xmin(points[0].x()); + qreal xmax(points[0].x()); + qreal ymin(points[0].y()); + qreal ymax(points[0].y()); + + // collect vertex data + Q27Dot5 y_prev = FloatToQ27Dot5(points[vertices.nPoints-1].y()); + Q27Dot5 x_next = FloatToQ27Dot5(points[0].x()); + Q27Dot5 y_next = FloatToQ27Dot5(points[0].y()); + int j = 0; + int i = 0; + while (i < vertices.nPoints) { + Q27Dot5 y_curr = y_next; + + *vv = v; + + v->x = x_next; + v->y = y_next; + v->flags = 0; + + next_point: + + xmin = qMin(xmin, points[i+1].x()); + xmax = qMax(xmax, points[i+1].x()); + ymin = qMin(ymin, points[i+1].y()); + ymax = qMax(ymax, points[i+1].y()); + + y_next = FloatToQ27Dot5(points[i+1].y()); + x_next = FloatToQ27Dot5(points[i+1].x()); + + // skip vertices on top of each other + if (v->x == x_next && v->y == y_next) { + ++i; + if (i < vertices.nPoints) + goto next_point; + Vertex *v0 = vertices.storage; + v0->flags &= ~(LineBeforeStarts|LineBeforeEnds|LineBeforeHorizontal); + if (y_prev < y_curr) + v0->flags |= LineBeforeEnds; + else if (y_prev > y_curr) + v0->flags |= LineBeforeStarts; + else + v0->flags |= LineBeforeHorizontal; + if ((v0->flags & (LineBeforeStarts|LineAfterStarts)) + && !(v0->flags & (LineAfterEnds|LineBeforeEnds))) + *maxActiveEdges += 2; + break; + } + + if (y_prev < y_curr) + v->flags |= LineBeforeEnds; + else if (y_prev > y_curr) + v->flags |= LineBeforeStarts; + else + v->flags |= LineBeforeHorizontal; + + + if (y_curr < y_next) + v->flags |= LineAfterStarts; + else if (y_curr > y_next) + v->flags |= LineAfterEnds; + else + v->flags |= LineAfterHorizontal; + // ### could probably get better limit by looping over sorted list and counting down on ending edges + if ((v->flags & (LineBeforeStarts|LineAfterStarts)) + && !(v->flags & (LineAfterEnds|LineBeforeEnds))) + *maxActiveEdges += 2; + y_prev = y_curr; + ++v; + ++vv; + ++j; + ++i; + } + vertices.nPoints = j; + + QDEBUG() << "maxActiveEdges=" << *maxActiveEdges; + vv = vertices.sorted; + std::sort(vv, vv + vertices.nPoints, compareVertex); + + return QRectF(xmin, ymin, xmax-xmin, ymax-ymin); +} + +struct QCoincidingEdge { + QTessellatorPrivate::Vertex *start; + QTessellatorPrivate::Vertex *end; + bool used; + bool before; + + inline bool operator<(const QCoincidingEdge &e2) const + { + return end->y == e2.end->y ? end->x < e2.end->x : end->y < e2.end->y; + } +}; + +static void cancelEdges(QCoincidingEdge &e1, QCoincidingEdge &e2) +{ + if (e1.before) { + e1.start->flags &= ~(LineBeforeStarts|LineBeforeHorizontal); + e1.end->flags &= ~(LineAfterEnds|LineAfterHorizontal); + } else { + e1.start->flags &= ~(LineAfterStarts|LineAfterHorizontal); + e1.end->flags &= ~(LineBeforeEnds|LineBeforeHorizontal); + } + if (e2.before) { + e2.start->flags &= ~(LineBeforeStarts|LineBeforeHorizontal); + e2.end->flags &= ~(LineAfterEnds|LineAfterHorizontal); + } else { + e2.start->flags &= ~(LineAfterStarts|LineAfterHorizontal); + e2.end->flags &= ~(LineBeforeEnds|LineBeforeHorizontal); + } + e1.used = e2.used = true; +} + +void QTessellatorPrivate::cancelCoincidingEdges() +{ + Vertex **vv = vertices.sorted; + + QCoincidingEdge *tl = 0; + int tlSize = 0; + + for (int i = 0; i < vertices.nPoints - 1; ++i) { + Vertex *v = vv[i]; + int testListSize = 0; + while (i < vertices.nPoints - 1) { + Vertex *n = vv[i]; + if (v->x != n->x || v->y != n->y) + break; + + if (testListSize > tlSize - 2) { + tlSize = qMax(tlSize*2, 16); + tl = q_check_ptr((QCoincidingEdge *)realloc(tl, tlSize*sizeof(QCoincidingEdge))); + } + if (n->flags & (LineBeforeStarts|LineBeforeHorizontal)) { + tl[testListSize].start = n; + tl[testListSize].end = vertices.prev(n); + tl[testListSize].used = false; + tl[testListSize].before = true; + ++testListSize; + } + if (n->flags & (LineAfterStarts|LineAfterHorizontal)) { + tl[testListSize].start = n; + tl[testListSize].end = vertices.next(n); + tl[testListSize].used = false; + tl[testListSize].before = false; + ++testListSize; + } + ++i; + } + if (!testListSize) + continue; + + std::sort(tl, tl + testListSize); + + for (int j = 0; j < testListSize; ++j) { + if (tl[j].used) + continue; + + for (int k = j + 1; k < testListSize; ++k) { + if (tl[j].end->x != tl[k].end->x + || tl[j].end->y != tl[k].end->y + || tl[k].used) + break; + + if (!winding || tl[j].before != tl[k].before) { + cancelEdges(tl[j], tl[k]); + break; + } + ++k; + } + ++j; + } + } + free(tl); +} + + +void QTessellatorPrivate::emitEdges(QTessellator *tessellator) +{ + //QDEBUG() << "TRAPS:"; + if (!scanline.old_size) + return; + + // emit edges + if (winding) { + // winding fill rule + int w = 0; + + scanline.old[0]->y_left = y; + + for (int i = 0; i < scanline.old_size - 1; ++i) { + Edge *left = scanline.old[i]; + Edge *right = scanline.old[i+1]; + w += left->winding; +// qDebug() << "i=" << i << "edge->winding=" << left->winding << "winding=" << winding; + if (w == 0) { + left->y_right = y; + right->y_left = y; + } else if (!emit_clever || left->mark || right->mark) { + Q27Dot5 top = qMax(left->y_right, right->y_left); + if (top != y) { + QTessellator::Trapezoid trap; + fillTrapezoid(top, y, left->edge, right->edge, vertices, &trap); + tessellator->addTrap(trap); +// QDEBUG() << " top=" << Q27Dot5ToDouble(top) << "left=" << left->edge << "right=" << right->edge; + } + right->y_left = y; + left->y_right = y; + } + left->mark = false; + } + if (scanline.old[scanline.old_size - 1]->mark) { + scanline.old[scanline.old_size - 1]->y_right = y; + scanline.old[scanline.old_size - 1]->mark = false; + } + } else { + // odd-even fill rule + for (int i = 0; i < scanline.old_size; i += 2) { + Edge *left = scanline.old[i]; + Edge *right = scanline.old[i+1]; + if (!emit_clever || left->mark || right->mark) { + Q27Dot5 top = qMax(left->y_right, right->y_left); + if (top != y) { + QTessellator::Trapezoid trap; + fillTrapezoid(top, y, left->edge, right->edge, vertices, &trap); + tessellator->addTrap(trap); + } +// QDEBUG() << " top=" << Q27Dot5ToDouble(top) << "left=" << left->edge << "right=" << right->edge; + left->y_left = y; + left->y_right = y; + right->y_left = y; + right->y_right = y; + left->mark = right->mark = false; + } + } + } +} + + +void QTessellatorPrivate::processIntersections() +{ + QDEBUG() << "PROCESS INTERSECTIONS"; + // process intersections + while (!intersections.isEmpty()) { + Intersections::iterator it = intersections.begin(); + if (it.key().y != y) + break; + + // swap edges + QDEBUG() << " swapping intersecting edges "; + int min = scanline.size; + int max = 0; + Q27Dot5 xmin = INT_MAX; + Q27Dot5 xmax = INT_MIN; + int num = 0; + while (1) { + const Intersection i = it.key(); + int next = it->next; + + int edgePos = scanline.findEdge(i.edge); + if (edgePos >= 0) { + ++num; + min = qMin(edgePos, min); + max = qMax(edgePos, max); + Edge *edge = scanline.edges[edgePos]; + xmin = qMin(xmin, edge->positionAt(y)); + xmax = qMax(xmax, edge->positionAt(y)); + } + Intersection key; + key.y = y; + key.edge = next; + it = intersections.find(key); + intersections.remove(i); + if (it == intersections.end()) + break; + } + if (num < 2) + continue; + + Q_ASSERT(min != max); + QDEBUG() << "sorting between" << min << "and" << max << "xpos=" << xmin << xmax; + while (min > 0 && scanline.edges[min - 1]->positionAt(y) >= xmin) { + QDEBUG() << " adding edge on left"; + --min; + } + while (max < scanline.size - 1 && scanline.edges[max + 1]->positionAt(y) <= xmax) { + QDEBUG() << " adding edge on right"; + ++max; + } + + std::sort(scanline.edges + min, scanline.edges + max + 1, EdgeSorter(y)); +#ifdef DEBUG + for (int i = min; i <= max; ++i) + QDEBUG() << " " << scanline.edges[i]->edge << "at pos" << i; +#endif + for (int i = min; i <= max; ++i) { + Edge *edge = scanline.edges[i]; + edge->intersect_left = true; + edge->intersect_right = true; + edge->mark = true; + } + } +} + +void QTessellatorPrivate::removeEdges() +{ + int cv = currentVertex; + while (cv < vertices.nPoints) { + const Vertex *v = vertices.sorted[cv]; + if (v->y > y) + break; + if (v->flags & LineBeforeEnds) { + QDEBUG() << " removing edge" << vertices.prevPos(v); + int pos = scanline.findEdge(vertices.prevPos(v)); + if (pos == -1) + continue; + scanline.edges[pos]->mark = true; + if (pos > 0) + scanline.edges[pos - 1]->intersect_right = true; + if (pos < scanline.size - 1) + scanline.edges[pos + 1]->intersect_left = true; + scanline.removeAt(pos); + } + if (v->flags & LineAfterEnds) { + QDEBUG() << " removing edge" << vertices.position(v); + int pos = scanline.findEdge(vertices.position(v)); + if (pos == -1) + continue; + scanline.edges[pos]->mark = true; + if (pos > 0) + scanline.edges[pos - 1]->intersect_right = true; + if (pos < scanline.size - 1) + scanline.edges[pos + 1]->intersect_left = true; + scanline.removeAt(pos); + } + ++cv; + } +} + +void QTessellatorPrivate::addEdges() +{ + while (currentVertex < vertices.nPoints) { + const Vertex *v = vertices.sorted[currentVertex]; + if (v->y > y) + break; + if (v->flags & LineBeforeStarts) { + // add new edge + int start = vertices.prevPos(v); + Edge e(vertices, start); + int pos = scanline.findEdgePosition(e); + QDEBUG() << " adding edge" << start << "at position" << pos; + scanline.insert(pos, e); + if (!mark_clever || !(v->flags & LineAfterEnds)) { + if (pos > 0) + scanline.edges[pos - 1]->mark = true; + if (pos < scanline.size - 1) + scanline.edges[pos + 1]->mark = true; + } + } + if (v->flags & LineAfterStarts) { + Edge e(vertices, vertices.position(v)); + int pos = scanline.findEdgePosition(e); + QDEBUG() << " adding edge" << vertices.position(v) << "at position" << pos; + scanline.insert(pos, e); + if (!mark_clever || !(v->flags & LineBeforeEnds)) { + if (pos > 0) + scanline.edges[pos - 1]->mark = true; + if (pos < scanline.size - 1) + scanline.edges[pos + 1]->mark = true; + } + } + if (v->flags & LineAfterHorizontal) { + int pos1 = scanline.findEdgePosition(v->x, v->y); + const Vertex *next = vertices.next(v); + Q_ASSERT(v->y == next->y); + int pos2 = scanline.findEdgePosition(next->x, next->y); + if (pos2 < pos1) + qSwap(pos1, pos2); + if (pos1 > 0) + --pos1; + if (pos2 == scanline.size) + --pos2; + //QDEBUG() << "marking horizontal edge from " << pos1 << "to" << pos2; + scanline.markEdges(pos1, pos2); + } + ++currentVertex; + } +} + +#ifdef DEBUG +static void checkLinkChain(const QTessellatorPrivate::Intersections &intersections, + QTessellatorPrivate::Intersection i) +{ +// qDebug() << " Link chain: "; + int end = i.edge; + while (1) { + QTessellatorPrivate::IntersectionLink l = intersections.value(i); +// qDebug() << " " << i.edge << "next=" << l.next << "prev=" << l.prev; + if (l.next == end) + break; + Q_ASSERT(l.next != -1); + Q_ASSERT(l.prev != -1); + + QTessellatorPrivate::Intersection i2 = i; + i2.edge = l.next; + QTessellatorPrivate::IntersectionLink l2 = intersections.value(i2); + + Q_ASSERT(l2.next != -1); + Q_ASSERT(l2.prev != -1); + Q_ASSERT(l.next == i2.edge); + Q_ASSERT(l2.prev == i.edge); + i = i2; + } +} +#endif + +bool QTessellatorPrivate::edgeInChain(Intersection i, int edge) +{ + int end = i.edge; + while (1) { + if (i.edge == edge) + return true; + IntersectionLink l = intersections.value(i); + if (l.next == end) + break; + Q_ASSERT(l.next != -1); + Q_ASSERT(l.prev != -1); + + Intersection i2 = i; + i2.edge = l.next; + +#ifndef QT_NO_DEBUG + IntersectionLink l2 = intersections.value(i2); + Q_ASSERT(l2.next != -1); + Q_ASSERT(l2.prev != -1); + Q_ASSERT(l.next == i2.edge); + Q_ASSERT(l2.prev == i.edge); +#endif + i = i2; + } + return false; +} + + +void QTessellatorPrivate::addIntersection(const Edge *e1, const Edge *e2) +{ + const IntersectionLink emptyLink = {-1, -1}; + + int next = vertices.nextPos(vertices[e1->edge]); + if (e2->edge == next) + return; + int prev = vertices.prevPos(vertices[e1->edge]); + if (e2->edge == prev) + return; + + Q27Dot5 yi; + bool det_positive; + bool isect = e1->intersect(*e2, &yi, &det_positive); + QDEBUG("checking edges %d and %d", e1->edge, e2->edge); + if (!isect) { + QDEBUG() << " no intersection"; + return; + } + + // don't emit an intersection if it's at the start of a line segment or above us + if (yi <= y) { + if (!det_positive) + return; + QDEBUG() << " ----->>>>>> WRONG ORDER!"; + yi = y; + } + QDEBUG() << " between edges " << e1->edge << "and" << e2->edge << "at point (" + << Q27Dot5ToDouble(yi) << ')'; + + Intersection i1; + i1.y = yi; + i1.edge = e1->edge; + IntersectionLink link1 = intersections.value(i1, emptyLink); + Intersection i2; + i2.y = yi; + i2.edge = e2->edge; + IntersectionLink link2 = intersections.value(i2, emptyLink); + + // new pair of edges + if (link1.next == -1 && link2.next == -1) { + link1.next = link1.prev = i2.edge; + link2.next = link2.prev = i1.edge; + } else if (link1.next == i2.edge || link1.prev == i2.edge + || link2.next == i1.edge || link2.prev == i1.edge) { +#ifdef DEBUG + checkLinkChain(intersections, i1); + checkLinkChain(intersections, i2); + Q_ASSERT(edgeInChain(i1, i2.edge)); +#endif + return; + } else if (link1.next == -1 || link2.next == -1) { + if (link2.next == -1) { + qSwap(i1, i2); + qSwap(link1, link2); + } + Q_ASSERT(link1.next == -1); +#ifdef DEBUG + checkLinkChain(intersections, i2); +#endif + // only i2 in list + link1.next = i2.edge; + link1.prev = link2.prev; + link2.prev = i1.edge; + Intersection other; + other.y = yi; + other.edge = link1.prev; + IntersectionLink link = intersections.value(other, emptyLink); + Q_ASSERT(link.next == i2.edge); + Q_ASSERT(link.prev != -1); + link.next = i1.edge; + intersections.insert(other, link); + } else { + bool connected = edgeInChain(i1, i2.edge); + if (connected) + return; +#ifdef DEBUG + checkLinkChain(intersections, i1); + checkLinkChain(intersections, i2); +#endif + // both already in some list. Have to make sure they are connected + // this can be done by cutting open the ring(s) after the two eges and + // connecting them again + Intersection other1; + other1.y = yi; + other1.edge = link1.next; + IntersectionLink linko1 = intersections.value(other1, emptyLink); + Intersection other2; + other2.y = yi; + other2.edge = link2.next; + IntersectionLink linko2 = intersections.value(other2, emptyLink); + + linko1.prev = i2.edge; + link2.next = other1.edge; + + linko2.prev = i1.edge; + link1.next = other2.edge; + intersections.insert(other1, linko1); + intersections.insert(other2, linko2); + } + intersections.insert(i1, link1); + intersections.insert(i2, link2); +#ifdef DEBUG + checkLinkChain(intersections, i1); + checkLinkChain(intersections, i2); + Q_ASSERT(edgeInChain(i1, i2.edge)); +#endif + return; + +} + + +void QTessellatorPrivate::addIntersections() +{ + if (scanline.size) { + QDEBUG() << "INTERSECTIONS"; + // check marked edges for intersections +#ifdef DEBUG + for (int i = 0; i < scanline.size; ++i) { + Edge *e = scanline.edges[i]; + QDEBUG() << " " << i << e->edge << "isect=(" << e->intersect_left << e->intersect_right + << ')'; + } +#endif + + for (int i = 0; i < scanline.size - 1; ++i) { + Edge *e1 = scanline.edges[i]; + Edge *e2 = scanline.edges[i + 1]; + // check for intersection + if (e1->intersect_right || e2->intersect_left) + addIntersection(e1, e2); + } + } +#if 0 + if (intersections.constBegin().key().y == y) { + QDEBUG() << "----------------> intersection on same line"; + scanline.clearMarks(); + scanline.processIntersections(y, &intersections); + goto redo; + } +#endif +} + + +QTessellator::QTessellator() +{ + d = new QTessellatorPrivate; +} + +QTessellator::~QTessellator() +{ + delete d; +} + +void QTessellator::setWinding(bool w) +{ + d->winding = w; +} + + +QRectF QTessellator::tessellate(const QPointF *points, int nPoints) +{ + Q_ASSERT(points[0] == points[nPoints-1]); + --nPoints; + +#ifdef DEBUG + QDEBUG()<< "POINTS:"; + for (int i = 0; i < nPoints; ++i) { + QDEBUG() << points[i]; + } +#endif + + // collect edges and calculate bounds + d->vertices.nPoints = nPoints; + d->vertices.init(nPoints); + + int maxActiveEdges = 0; + QRectF br = d->collectAndSortVertices(points, &maxActiveEdges); + d->cancelCoincidingEdges(); + +#ifdef DEBUG + QDEBUG() << "nPoints = " << nPoints << "using " << d->vertices.nPoints; + QDEBUG()<< "VERTICES:"; + for (int i = 0; i < d->vertices.nPoints; ++i) { + QDEBUG() << " " << i << ": " + << "point=" << d->vertices.position(d->vertices.sorted[i]) + << "flags=" << d->vertices.sorted[i]->flags + << "pos=(" << Q27Dot5ToDouble(d->vertices.sorted[i]->x) << '/' + << Q27Dot5ToDouble(d->vertices.sorted[i]->y) << ')'; + } +#endif + + d->scanline.init(maxActiveEdges); + d->y = INT_MIN/256; + d->currentVertex = 0; + + while (d->currentVertex < d->vertices.nPoints) { + d->scanline.clearMarks(); + + d->y = d->vertices.sorted[d->currentVertex]->y; + if (!d->intersections.isEmpty()) + d->y = qMin(d->y, d->intersections.constBegin().key().y); + + QDEBUG()<< "===== SCANLINE: y =" << Q27Dot5ToDouble(d->y) << " ====="; + + d->scanline.prepareLine(); + d->processIntersections(); + d->removeEdges(); + d->addEdges(); + d->addIntersections(); + d->emitEdges(this); + d->scanline.lineDone(); + +#ifdef DEBUG + QDEBUG()<< "===== edges:"; + for (int i = 0; i < d->scanline.size; ++i) { + QDEBUG() << " " << d->scanline.edges[i]->edge + << "p0= (" << Q27Dot5ToDouble(d->scanline.edges[i]->v0->x) + << '/' << Q27Dot5ToDouble(d->scanline.edges[i]->v0->y) + << ") p1= (" << Q27Dot5ToDouble(d->scanline.edges[i]->v1->x) + << '/' << Q27Dot5ToDouble(d->scanline.edges[i]->v1->y) << ')' + << "x=" << Q27Dot5ToDouble(d->scanline.edges[i]->positionAt(d->y)) + << "isLeftOfNext=" + << ((i < d->scanline.size - 1) + ? d->scanline.edges[i]->isLeftOf(*d->scanline.edges[i+1], d->y) + : true); + } +#endif +} + + d->scanline.done(); + d->intersections.clear(); + return br; +} + +// tessellates the given convex polygon +void QTessellator::tessellateConvex(const QPointF *points, int nPoints) +{ + Q_ASSERT(points[0] == points[nPoints-1]); + --nPoints; + + d->vertices.nPoints = nPoints; + d->vertices.init(nPoints); + + for (int i = 0; i < nPoints; ++i) { + d->vertices[i]->x = FloatToQ27Dot5(points[i].x()); + d->vertices[i]->y = FloatToQ27Dot5(points[i].y()); + } + + int left = 0, right = 0; + + int top = 0; + for (int i = 1; i < nPoints; ++i) { + if (d->vertices[i]->y < d->vertices[top]->y) + top = i; + } + + left = (top + nPoints - 1) % nPoints; + right = (top + 1) % nPoints; + + while (d->vertices[left]->x == d->vertices[top]->x && d->vertices[left]->y == d->vertices[top]->y && left != right) + left = (left + nPoints - 1) % nPoints; + + while (d->vertices[right]->x == d->vertices[top]->x && d->vertices[right]->y == d->vertices[top]->y && left != right) + right = (right + 1) % nPoints; + + if (left == right) + return; + + int dir = 1; + + Vertex dLeft = { d->vertices[top]->x - d->vertices[left]->x, + d->vertices[top]->y - d->vertices[left]->y }; + + Vertex dRight = { d->vertices[right]->x - d->vertices[top]->x, + d->vertices[right]->y - d->vertices[top]->y }; + + Q27Dot5 cross = dLeft.x * dRight.y - dLeft.y * dRight.x; + + // flip direction if polygon is clockwise + if (cross < 0 || (cross == 0 && dLeft.x > 0)) { + qSwap(left, right); + dir = -1; + } + + Vertex *lastLeft = d->vertices[top]; + Vertex *lastRight = d->vertices[top]; + + QTessellator::Trapezoid trap; + + while (lastLeft->y == d->vertices[left]->y && left != right) { + lastLeft = d->vertices[left]; + left = (left + nPoints - dir) % nPoints; + } + + while (lastRight->y == d->vertices[right]->y && left != right) { + lastRight = d->vertices[right]; + right = (right + nPoints + dir) % nPoints; + } + + while (true) { + trap.top = qMax(lastRight->y, lastLeft->y); + trap.bottom = qMin(d->vertices[left]->y, d->vertices[right]->y); + trap.topLeft = lastLeft; + trap.topRight = lastRight; + trap.bottomLeft = d->vertices[left]; + trap.bottomRight = d->vertices[right]; + + if (trap.bottom > trap.top) + addTrap(trap); + + if (left == right) + break; + + if (d->vertices[right]->y < d->vertices[left]->y) { + do { + lastRight = d->vertices[right]; + right = (right + nPoints + dir) % nPoints; + } + while (lastRight->y == d->vertices[right]->y && left != right); + } else { + do { + lastLeft = d->vertices[left]; + left = (left + nPoints - dir) % nPoints; + } + while (lastLeft->y == d->vertices[left]->y && left != right); + } + } +} + +// tessellates the stroke of the line from a_ to b_ with the given width and a flat cap +void QTessellator::tessellateRect(const QPointF &a_, const QPointF &b_, qreal width) +{ + Vertex a = { FloatToQ27Dot5(a_.x()), FloatToQ27Dot5(a_.y()) }; + Vertex b = { FloatToQ27Dot5(b_.x()), FloatToQ27Dot5(b_.y()) }; + + QPointF pa = a_, pb = b_; + + if (a.y > b.y) { + qSwap(a, b); + qSwap(pa, pb); + } + + Vertex delta = { b.x - a.x, b.y - a.y }; + + if (delta.x == 0 && delta.y == 0) + return; + + qreal hw = 0.5 * width; + + if (delta.x == 0) { + Q27Dot5 halfWidth = FloatToQ27Dot5(hw); + + if (halfWidth == 0) + return; + + Vertex topLeft = { a.x - halfWidth, a.y }; + Vertex topRight = { a.x + halfWidth, a.y }; + Vertex bottomLeft = { a.x - halfWidth, b.y }; + Vertex bottomRight = { a.x + halfWidth, b.y }; + + QTessellator::Trapezoid trap = { topLeft.y, bottomLeft.y, &topLeft, &bottomLeft, &topRight, &bottomRight }; + addTrap(trap); + } else if (delta.y == 0) { + Q27Dot5 halfWidth = FloatToQ27Dot5(hw); + + if (halfWidth == 0) + return; + + if (a.x > b.x) + qSwap(a.x, b.x); + + Vertex topLeft = { a.x, a.y - halfWidth }; + Vertex topRight = { b.x, a.y - halfWidth }; + Vertex bottomLeft = { a.x, a.y + halfWidth }; + Vertex bottomRight = { b.x, a.y + halfWidth }; + + QTessellator::Trapezoid trap = { topLeft.y, bottomLeft.y, &topLeft, &bottomLeft, &topRight, &bottomRight }; + addTrap(trap); + } else { + QPointF perp(pb.y() - pa.y(), pa.x() - pb.x()); + qreal length = qSqrt(perp.x() * perp.x() + perp.y() * perp.y()); + + if (qFuzzyIsNull(length)) + return; + + // need the half of the width + perp *= hw / length; + + QPointF pta = pa + perp; + QPointF ptb = pa - perp; + QPointF ptc = pb - perp; + QPointF ptd = pb + perp; + + Vertex ta = { FloatToQ27Dot5(pta.x()), FloatToQ27Dot5(pta.y()) }; + Vertex tb = { FloatToQ27Dot5(ptb.x()), FloatToQ27Dot5(ptb.y()) }; + Vertex tc = { FloatToQ27Dot5(ptc.x()), FloatToQ27Dot5(ptc.y()) }; + Vertex td = { FloatToQ27Dot5(ptd.x()), FloatToQ27Dot5(ptd.y()) }; + + if (ta.y < tb.y) { + if (tb.y < td.y) { + QTessellator::Trapezoid top = { ta.y, tb.y, &ta, &tb, &ta, &td }; + QTessellator::Trapezoid bottom = { td.y, tc.y, &tb, &tc, &td, &tc }; + addTrap(top); + addTrap(bottom); + + QTessellator::Trapezoid middle = { tb.y, td.y, &tb, &tc, &ta, &td }; + addTrap(middle); + } else { + QTessellator::Trapezoid top = { ta.y, td.y, &ta, &tb, &ta, &td }; + QTessellator::Trapezoid bottom = { tb.y, tc.y, &tb, &tc, &td, &tc }; + addTrap(top); + addTrap(bottom); + + if (tb.y != td.y) { + QTessellator::Trapezoid middle = { td.y, tb.y, &ta, &tb, &td, &tc }; + addTrap(middle); + } + } + } else { + if (ta.y < tc.y) { + QTessellator::Trapezoid top = { tb.y, ta.y, &tb, &tc, &tb, &ta }; + QTessellator::Trapezoid bottom = { tc.y, td.y, &tc, &td, &ta, &td }; + addTrap(top); + addTrap(bottom); + + QTessellator::Trapezoid middle = { ta.y, tc.y, &tb, &tc, &ta, &td }; + addTrap(middle); + } else { + QTessellator::Trapezoid top = { tb.y, tc.y, &tb, &tc, &tb, &ta }; + QTessellator::Trapezoid bottom = { ta.y, td.y, &tc, &td, &ta, &td }; + addTrap(top); + addTrap(bottom); + + if (ta.y != tc.y) { + QTessellator::Trapezoid middle = { tc.y, ta.y, &tc, &td, &tb, &ta }; + addTrap(middle); + } + } + } + } +} + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/nativepainting/qtessellator_p.h b/src/plugins/platforms/xcb/nativepainting/qtessellator_p.h new file mode 100644 index 0000000000..65ae6bdc41 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qtessellator_p.h @@ -0,0 +1,83 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QTESSELATOR_P_H +#define QTESSELATOR_P_H + +#include <QPoint> +#include <QRect> + +QT_BEGIN_NAMESPACE + +class QTessellatorPrivate; + +typedef int Q27Dot5; +#define Q27Dot5ToDouble(i) ((i)/32.) +#define FloatToQ27Dot5(i) (int)((i) * 32) +#define IntToQ27Dot5(i) ((i) << 5) +#define Q27Dot5ToXFixed(i) ((i) << 11) +#define Q27Dot5Factor 32 + +class QTessellator { +public: + QTessellator(); + virtual ~QTessellator(); + + QRectF tessellate(const QPointF *points, int nPoints); + void tessellateConvex(const QPointF *points, int nPoints); + void tessellateRect(const QPointF &a, const QPointF &b, qreal width); + + void setWinding(bool w); + + struct Vertex { + Q27Dot5 x; + Q27Dot5 y; + }; + struct Trapezoid { + Q27Dot5 top; + Q27Dot5 bottom; + const Vertex *topLeft; + const Vertex *bottomLeft; + const Vertex *topRight; + const Vertex *bottomRight; + }; + virtual void addTrap(const Trapezoid &trap) = 0; + +private: + friend class QTessellatorPrivate; + QTessellatorPrivate *d; +}; + +QT_END_NAMESPACE + +#endif diff --git a/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp b/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp new file mode 100644 index 0000000000..23500eb4ab --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp @@ -0,0 +1,315 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qxcbconnection.h" +#include "qcolormap_x11_p.h" +#include "qxcbnativepainting.h" +#include "qt_x11_p.h" + +QT_BEGIN_NAMESPACE + +QXcbX11Data *qt_x11Data = Q_NULLPTR; + +void qt_xcb_native_x11_info_init(QXcbConnection *conn) +{ + qt_x11Data = new QXcbX11Data; + X11->display = (Display *) conn->xlib_display(); + X11->defaultScreen = DefaultScreen(X11->display); + X11->screenCount = ScreenCount(X11->display); + + X11->screens = new QX11InfoData[X11->screenCount]; + X11->argbVisuals = new Visual *[X11->screenCount]; + X11->argbColormaps = new Colormap[X11->screenCount]; + + for (int s = 0; s < X11->screenCount; s++) { + QX11InfoData *screen = X11->screens + s; + //screen->ref = 1; // ensures it doesn't get deleted + screen->screen = s; + + int widthMM = DisplayWidthMM(X11->display, s); + if (widthMM != 0) { + screen->dpiX = (DisplayWidth(X11->display, s) * 254 + widthMM * 5) / (widthMM * 10); + } else { + screen->dpiX = 72; + } + + int heightMM = DisplayHeightMM(X11->display, s); + if (heightMM != 0) { + screen->dpiY = (DisplayHeight(X11->display, s) * 254 + heightMM * 5) / (heightMM * 10); + } else { + screen->dpiY = 72; + } + + X11->argbVisuals[s] = 0; + X11->argbColormaps[s] = 0; + } + + X11->use_xrender = conn->hasXRender() && !qEnvironmentVariableIsSet("QT_XCB_NATIVE_PAINTING_NO_XRENDER"); + +#if QT_CONFIG(xrender) + memset(X11->solid_fills, 0, sizeof(X11->solid_fills)); + for (int i = 0; i < X11->solid_fill_count; ++i) + X11->solid_fills[i].screen = -1; + memset(X11->pattern_fills, 0, sizeof(X11->pattern_fills)); + for (int i = 0; i < X11->pattern_fill_count; ++i) + X11->pattern_fills[i].screen = -1; +#endif + + QXcbColormap::initialize(); + +#if QT_CONFIG(xrender) + if (X11->use_xrender) { + // XRender is supported, let's see if we have a PictFormat for the + // default visual + XRenderPictFormat *format = + XRenderFindVisualFormat(X11->display, + (Visual *) QXcbX11Info::appVisual(X11->defaultScreen)); + + if (!format) { + X11->use_xrender = false; + } + } +#endif // QT_CONFIG(xrender) +} + +QVector<XRectangle> qt_region_to_xrectangles(const QRegion &r) +{ + const int numRects = r.rectCount(); + const QVector<QRect> input = r.rects(); + QVector<XRectangle> output(numRects); + for (int i = 0; i < numRects; ++i) { + const QRect &in = input[i]; + XRectangle &out = output[i]; + out.x = qMax(SHRT_MIN, in.x()); + out.y = qMax(SHRT_MIN, in.y()); + out.width = qMin((int)USHRT_MAX, in.width()); + out.height = qMin((int)USHRT_MAX, in.height()); + } + return output; +} + +class QXcbX11InfoData : public QSharedData, public QX11InfoData +{}; + +QXcbX11Info::QXcbX11Info() + : d(Q_NULLPTR) +{} + +QXcbX11Info::~QXcbX11Info() +{} + +QXcbX11Info::QXcbX11Info(const QXcbX11Info &other) + : d(other.d) +{} + +QXcbX11Info &QXcbX11Info::operator=(const QXcbX11Info &other) +{ + d = other.d; + return *this; +} + +QXcbX11Info QXcbX11Info::fromScreen(int screen) +{ + QXcbX11InfoData *xd = new QXcbX11InfoData; + xd->screen = screen; + xd->depth = QXcbX11Info::appDepth(screen); + xd->cells = QXcbX11Info::appCells(screen); + xd->colormap = QXcbX11Info::appColormap(screen); + xd->defaultColormap = QXcbX11Info::appDefaultColormap(screen); + xd->visual = (Visual *)QXcbX11Info::appVisual(screen); + xd->defaultVisual = QXcbX11Info::appDefaultVisual(screen); + + QXcbX11Info info; + info.d = xd; + return info; +} + +void QXcbX11Info::setDepth(int depth) +{ + if (!d) + *this = fromScreen(appScreen()); + + d->depth = depth; +} + +Display *QXcbX11Info::display() +{ + return X11 ? X11->display : 0; +} + +int QXcbX11Info::screen() const +{ + return d ? d->screen : QXcbX11Info::appScreen(); +} + +int QXcbX11Info::depth() const +{ + return d ? d->depth : QXcbX11Info::appDepth(); +} + +Colormap QXcbX11Info::colormap() const +{ + return d ? d->colormap : QXcbX11Info::appColormap(); +} + +void *QXcbX11Info::visual() const +{ + return d ? d->visual : QXcbX11Info::appVisual(); +} + +void QXcbX11Info::setVisual(void *visual) +{ + if (!d) + *this = fromScreen(appScreen()); + + d->visual = (Visual *) visual; +} + +int QXcbX11Info::appScreen() +{ + return X11 ? X11->defaultScreen : 0; +} + +int QXcbX11Info::appDepth(int screen) +{ + return X11 ? X11->screens[screen == -1 ? X11->defaultScreen : screen].depth : 32; +} + +int QXcbX11Info::appCells(int screen) +{ + return X11 ? X11->screens[screen == -1 ? X11->defaultScreen : screen].cells : 0; +} + +Colormap QXcbX11Info::appColormap(int screen) +{ + return X11 ? X11->screens[screen == -1 ? X11->defaultScreen : screen].colormap : 0; +} + +void *QXcbX11Info::appVisual(int screen) +{ + return X11 ? X11->screens[screen == -1 ? X11->defaultScreen : screen].visual : 0; +} + +Window QXcbX11Info::appRootWindow(int screen) +{ + return X11 ? RootWindow(X11->display, screen == -1 ? X11->defaultScreen : screen) : 0; +} + +bool QXcbX11Info::appDefaultColormap(int screen) +{ + return X11 ? X11->screens[screen == -1 ? X11->defaultScreen : screen].defaultColormap : true; +} + +bool QXcbX11Info::appDefaultVisual(int screen) +{ + return X11 ? X11->screens[screen == -1 ? X11->defaultScreen : screen].defaultVisual : true; +} + +int QXcbX11Info::appDpiX(int screen) +{ + if (!X11) + return 75; + if (screen < 0) + screen = X11->defaultScreen; + if (screen > X11->screenCount) + return 0; + return X11->screens[screen].dpiX; +} + +int QXcbX11Info::appDpiY(int screen) +{ + if (!X11) + return 75; + if (screen < 0) + screen = X11->defaultScreen; + if (screen > X11->screenCount) + return 0; + return X11->screens[screen].dpiY; +} + +#if QT_CONFIG(xrender) +Picture QXcbX11Data::getSolidFill(int screen, const QColor &c) +{ + if (!X11->use_xrender) + return XNone; + + XRenderColor color = preMultiply(c); + for (int i = 0; i < X11->solid_fill_count; ++i) { + if (X11->solid_fills[i].screen == screen + && X11->solid_fills[i].color.alpha == color.alpha + && X11->solid_fills[i].color.red == color.red + && X11->solid_fills[i].color.green == color.green + && X11->solid_fills[i].color.blue == color.blue) + return X11->solid_fills[i].picture; + } + // none found, replace one + int i = qrand() % 16; + + if (X11->solid_fills[i].screen != screen && X11->solid_fills[i].picture) { + XRenderFreePicture (X11->display, X11->solid_fills[i].picture); + X11->solid_fills[i].picture = 0; + } + + if (!X11->solid_fills[i].picture) { + Pixmap pixmap = XCreatePixmap (X11->display, RootWindow (X11->display, screen), 1, 1, 32); + XRenderPictureAttributes attrs; + attrs.repeat = True; + X11->solid_fills[i].picture = XRenderCreatePicture (X11->display, pixmap, + XRenderFindStandardFormat(X11->display, PictStandardARGB32), + CPRepeat, &attrs); + XFreePixmap (X11->display, pixmap); + } + + X11->solid_fills[i].color = color; + X11->solid_fills[i].screen = screen; + XRenderFillRectangle (X11->display, PictOpSrc, X11->solid_fills[i].picture, &color, 0, 0, 1, 1); + return X11->solid_fills[i].picture; +} + +XRenderColor QXcbX11Data::preMultiply(const QColor &c) +{ + XRenderColor color; + const uint A = c.alpha(), + R = c.red(), + G = c.green(), + B = c.blue(); + color.alpha = (A | A << 8); + color.red = (R | R << 8) * color.alpha / 0x10000; + color.green = (G | G << 8) * color.alpha / 0x10000; + color.blue = (B | B << 8) * color.alpha / 0x10000; + return color; +} +#endif // QT_CONFIG(xrender) + + +QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.h b/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.h new file mode 100644 index 0000000000..f3011286c9 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.h @@ -0,0 +1,96 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QXCBNATIVEPAINTING_H +#define QXCBNATIVEPAINTING_H + +#include <QSharedDataPointer> +#include "qt_x11_p.h" + +typedef struct _FcPattern FcPattern; +typedef unsigned long XID; +typedef XID Colormap; +typedef XID Window; +typedef struct _XDisplay Display; + +QT_BEGIN_NAMESPACE + +class QXcbConnection; +class QPixmap; + +void qt_xcb_native_x11_info_init(QXcbConnection *conn); +QVector<XRectangle> qt_region_to_xrectangles(const QRegion &r); + +class QXcbX11InfoData; +class QXcbX11Info +{ +public: + QXcbX11Info(); + ~QXcbX11Info(); + QXcbX11Info(const QXcbX11Info &other); + QXcbX11Info &operator=(const QXcbX11Info &other); + + static QXcbX11Info fromScreen(int screen); + static Display *display(); + + int depth() const; + void setDepth(int depth); + + int screen() const; + Colormap colormap() const; + + void *visual() const; + void setVisual(void *visual); + + static int appScreen(); + static int appDepth(int screen = -1); + static int appCells(int screen = -1); + static Colormap appColormap(int screen = -1); + static void *appVisual(int screen = -1); + static Window appRootWindow(int screen = -1); + static bool appDefaultColormap(int screen = -1); + static bool appDefaultVisual(int screen = -1); + static int appDpiX(int screen = -1); + static int appDpiY(int screen = -1); + +private: + QSharedDataPointer<QXcbX11InfoData> d; + + friend class QX11PaintEngine; + friend class QX11PlatformPixmap; + friend void qt_x11SetScreen(QPixmap &pixmap, int screen); +}; + +QT_END_NAMESPACE + +#endif // QXCBNATIVEPAINTING_H |