diff options
Diffstat (limited to 'src/plugins/platforms/xcb/nativepainting/qbackingstore_x11.cpp')
-rw-r--r-- | src/plugins/platforms/xcb/nativepainting/qbackingstore_x11.cpp | 203 |
1 files changed, 203 insertions, 0 deletions
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 |