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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 506 insertions, 0 deletions

diff --git a/src/plugins/gfxdrivers/directfb/qdirectfbwindowsurface.cpp b/src/plugins/gfxdrivers/directfb/qdirectfbwindowsurface.cpp
new file mode 100644
index 0000000000..9a94c30d8c
--- /dev/null
+++ b/src/plugins/gfxdrivers/directfb/qdirectfbwindowsurface.cpp
@@ -0,0 +1,506 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdirectfbwindowsurface.h"
+#include "qdirectfbscreen.h"
+#include "qdirectfbpaintengine.h"
+
+#include <private/qwidget_p.h>
+#include <qwidget.h>
+#include <qwindowsystem_qws.h>
+#include <qpaintdevice.h>
+#include <qvarlengtharray.h>
+
+#ifndef QT_NO_QWS_DIRECTFB
+
+QT_BEGIN_NAMESPACE
+
+QDirectFBWindowSurface::QDirectFBWindowSurface(DFBSurfaceFlipFlags flip, QDirectFBScreen *scr)
+    : QDirectFBPaintDevice(scr)
+#ifndef QT_NO_DIRECTFB_WM
+    , dfbWindow(0)
+#endif
+    , flipFlags(flip)
+    , boundingRectFlip(scr->directFBFlags() & QDirectFBScreen::BoundingRectFlip)
+    , flushPending(false)
+{
+#ifdef QT_NO_DIRECTFB_WM
+    mode = Offscreen;
+#endif
+    setSurfaceFlags(Opaque | Buffered);
+#ifdef QT_DIRECTFB_TIMING
+    frames = 0;
+    timer.start();
+#endif
+}
+
+QDirectFBWindowSurface::QDirectFBWindowSurface(DFBSurfaceFlipFlags flip, QDirectFBScreen *scr, QWidget *widget)
+    : QWSWindowSurface(widget), QDirectFBPaintDevice(scr)
+#ifndef QT_NO_DIRECTFB_WM
+    , dfbWindow(0)
+#endif
+    , flipFlags(flip)
+    , boundingRectFlip(scr->directFBFlags() & QDirectFBScreen::BoundingRectFlip)
+    , flushPending(false)
+{
+    SurfaceFlags flags = 0;
+    if (!widget || widget->window()->windowOpacity() == 0xff)
+        flags |= Opaque;
+#ifdef QT_NO_DIRECTFB_WM
+    if (widget && widget->testAttribute(Qt::WA_PaintOnScreen)) {
+        flags = RegionReserved;
+        mode = Primary;
+    } else {
+        mode = Offscreen;
+        flags = Buffered;
+    }
+#endif
+    setSurfaceFlags(flags);
+#ifdef QT_DIRECTFB_TIMING
+    frames = 0;
+    timer.start();
+#endif
+}
+
+QDirectFBWindowSurface::~QDirectFBWindowSurface()
+{
+    releaseSurface();
+    // these are not tracked by QDirectFBScreen so we don't want QDirectFBPaintDevice to release it
+}
+
+bool QDirectFBWindowSurface::isValid() const
+{
+    return true;
+}
+
+#ifdef QT_DIRECTFB_WM
+void QDirectFBWindowSurface::raise()
+{
+    if (IDirectFBWindow *window = directFBWindow()) {
+        window->RaiseToTop(window);
+    }
+}
+
+IDirectFBWindow *QDirectFBWindowSurface::directFBWindow() const
+{
+    return dfbWindow;
+}
+
+void QDirectFBWindowSurface::createWindow(const QRect &rect)
+{
+    IDirectFBDisplayLayer *layer = screen->dfbDisplayLayer();
+    if (!layer)
+        qFatal("QDirectFBWindowSurface: Unable to get primary display layer!");
+
+    updateIsOpaque();
+
+    DFBWindowDescription description;
+    memset(&description, 0, sizeof(DFBWindowDescription));
+
+    description.flags = DWDESC_CAPS|DWDESC_HEIGHT|DWDESC_WIDTH|DWDESC_POSX|DWDESC_POSY|DWDESC_SURFACE_CAPS|DWDESC_PIXELFORMAT;
+    description.caps = DWCAPS_NODECORATION;
+    description.surface_caps = DSCAPS_NONE;
+    imageFormat = screen->pixelFormat();
+
+    if (!(surfaceFlags() & Opaque)) {
+        imageFormat = screen->alphaPixmapFormat();
+        description.caps |= DWCAPS_ALPHACHANNEL;
+#if (Q_DIRECTFB_VERSION >= 0x010200)
+        description.flags |= DWDESC_OPTIONS;
+        description.options |= DWOP_ALPHACHANNEL;
+#endif
+    }
+    description.pixelformat = QDirectFBScreen::getSurfacePixelFormat(imageFormat);
+    description.posx = rect.x();
+    description.posy = rect.y();
+    description.width = rect.width();
+    description.height = rect.height();
+
+    if (QDirectFBScreen::isPremultiplied(imageFormat))
+        description.surface_caps = DSCAPS_PREMULTIPLIED;
+
+    if (screen->directFBFlags() & QDirectFBScreen::VideoOnly)
+        description.surface_caps |= DSCAPS_VIDEOONLY;
+
+    DFBResult result = layer->CreateWindow(layer, &description, &dfbWindow);
+
+    if (result != DFB_OK)
+        DirectFBErrorFatal("QDirectFBWindowSurface::createWindow", result);
+
+    if (window()) {
+        if (window()->windowFlags() & Qt::WindowStaysOnTopHint) {
+            dfbWindow->SetStackingClass(dfbWindow, DWSC_UPPER);
+        }
+        DFBWindowID winid;
+        result = dfbWindow->GetID(dfbWindow, &winid);
+        if (result != DFB_OK) {
+            DirectFBError("QDirectFBWindowSurface::createWindow. Can't get ID", result);
+        } else {
+            window()->setProperty("_q_DirectFBWindowID", winid);
+        }
+    }
+
+    Q_ASSERT(!dfbSurface);
+    dfbWindow->GetSurface(dfbWindow, &dfbSurface);
+}
+
+static DFBResult setWindowGeometry(IDirectFBWindow *dfbWindow, const QRect &old, const QRect &rect)
+{
+    DFBResult result = DFB_OK;
+    const bool isMove = old.isEmpty() || rect.topLeft() != old.topLeft();
+    const bool isResize = rect.size() != old.size();
+
+#if (Q_DIRECTFB_VERSION >= 0x010000)
+    if (isResize && isMove) {
+        result = dfbWindow->SetBounds(dfbWindow, rect.x(), rect.y(),
+                                      rect.width(), rect.height());
+    } else if (isResize) {
+        result = dfbWindow->Resize(dfbWindow,
+                                   rect.width(), rect.height());
+    } else if (isMove) {
+        result = dfbWindow->MoveTo(dfbWindow, rect.x(), rect.y());
+    }
+#else
+    if (isResize) {
+        result = dfbWindow->Resize(dfbWindow,
+                                   rect.width(), rect.height());
+    }
+    if (isMove) {
+        result = dfbWindow->MoveTo(dfbWindow, rect.x(), rect.y());
+    }
+#endif
+    return result;
+}
+#endif // QT_NO_DIRECTFB_WM
+
+void QDirectFBWindowSurface::setGeometry(const QRect &rect)
+{
+    const QRect oldRect = geometry();
+    if (oldRect == rect)
+        return;
+
+    IDirectFBSurface *oldSurface = dfbSurface;
+    const bool sizeChanged = oldRect.size() != rect.size();
+    if (sizeChanged) {
+        delete engine;
+        engine = 0;
+        releaseSurface();
+        Q_ASSERT(!dfbSurface);
+    }
+
+    if (rect.isNull()) {
+#ifndef QT_NO_DIRECTFB_WM
+        if (dfbWindow) {
+            if (window())
+                window()->setProperty("_q_DirectFBWindowID", QVariant());
+
+            dfbWindow->Release(dfbWindow);
+            dfbWindow = 0;
+        }
+#endif
+        Q_ASSERT(!dfbSurface);
+#ifdef QT_DIRECTFB_SUBSURFACE
+        Q_ASSERT(!subSurface);
+#endif
+    } else {
+#ifdef QT_DIRECTFB_WM
+        if (!dfbWindow) {
+            createWindow(rect);
+        } else {
+            setWindowGeometry(dfbWindow, oldRect, rect);
+            Q_ASSERT(!sizeChanged || !dfbSurface);
+            if (sizeChanged)
+                dfbWindow->GetSurface(dfbWindow, &dfbSurface);
+        }
+#else
+        IDirectFBSurface *primarySurface = screen->primarySurface();
+        DFBResult result = DFB_OK;
+        if (mode == Primary) {
+            Q_ASSERT(primarySurface);
+            if (rect == screen->region().boundingRect()) {
+                dfbSurface = primarySurface;
+            } else {
+                const DFBRectangle r = { rect.x(), rect.y(),
+                                         rect.width(), rect.height() };
+                result = primarySurface->GetSubSurface(primarySurface, &r, &dfbSurface);
+            }
+        } else { // mode == Offscreen
+            if (!dfbSurface) {
+                dfbSurface = screen->createDFBSurface(rect.size(), surfaceFlags() & Opaque ? screen->pixelFormat() : screen->alphaPixmapFormat(),
+                                                      QDirectFBScreen::DontTrackSurface);
+            }
+        }
+        if (result != DFB_OK)
+            DirectFBErrorFatal("QDirectFBWindowSurface::setGeometry()", result);
+#endif
+    }
+    if (oldSurface != dfbSurface) {
+        imageFormat = dfbSurface ? QDirectFBScreen::getImageFormat(dfbSurface) : QImage::Format_Invalid;
+    }
+
+    if (oldRect.size() != rect.size()) {
+        QWSWindowSurface::setGeometry(rect);
+    } else {
+        QWindowSurface::setGeometry(rect);
+    }
+}
+
+QByteArray QDirectFBWindowSurface::permanentState() const
+{
+    QByteArray state(sizeof(SurfaceFlags) + sizeof(DFBWindowID), 0);
+    char *ptr = state.data();
+    SurfaceFlags flags = surfaceFlags();
+    memcpy(ptr, &flags, sizeof(SurfaceFlags));
+    ptr += sizeof(SurfaceFlags);
+    DFBWindowID did = (DFBWindowID)(-1);
+    if (dfbWindow)
+        dfbWindow->GetID(dfbWindow, &did);
+    memcpy(ptr, &did, sizeof(DFBWindowID));
+    return state;
+}
+
+void QDirectFBWindowSurface::setPermanentState(const QByteArray &state)
+{
+    const char *ptr = state.constData();
+    IDirectFBDisplayLayer *layer = screen->dfbDisplayLayer();
+    SurfaceFlags flags;
+    memcpy(&flags, ptr, sizeof(SurfaceFlags));
+
+    setSurfaceFlags(flags);
+    ptr += sizeof(SurfaceFlags);
+    DFBWindowID id;
+    memcpy(&id, ptr, sizeof(DFBWindowID));
+    if (dfbSurface)
+        dfbSurface->Release(dfbSurface);
+    if (id != (DFBWindowID)-1) {
+        IDirectFBWindow *dw;
+        layer->GetWindow(layer, id, &dw);
+        if (dw->GetSurface(dw, &dfbSurface) != DFB_OK)
+                dfbSurface = 0;
+        dw->Release(dw);
+    }
+    else {
+        dfbSurface = 0;
+    }
+}
+
+bool QDirectFBWindowSurface::scroll(const QRegion &region, int dx, int dy)
+{
+    if (!dfbSurface || !(flipFlags & DSFLIP_BLIT) || region.rectCount() != 1)
+        return false;
+    if (flushPending) {
+        dfbSurface->Flip(dfbSurface, 0, DSFLIP_BLIT);
+    } else {
+        flushPending = true;
+    }
+    dfbSurface->SetBlittingFlags(dfbSurface, DSBLIT_NOFX);
+    const QRect r = region.boundingRect();
+    const DFBRectangle rect = { r.x(), r.y(), r.width(), r.height() };
+    dfbSurface->Blit(dfbSurface, dfbSurface, &rect, r.x() + dx, r.y() + dy);
+    return true;
+}
+
+bool QDirectFBWindowSurface::move(const QPoint &moveBy)
+{
+    setGeometry(geometry().translated(moveBy));
+    return true;
+}
+
+void QDirectFBWindowSurface::setOpaque(bool opaque)
+{
+    SurfaceFlags flags = surfaceFlags();
+    if (opaque != (flags & Opaque)) {
+        if (opaque) {
+            flags |= Opaque;
+        } else {
+            flags &= ~Opaque;
+        }
+        setSurfaceFlags(flags);
+    }
+}
+
+
+void QDirectFBWindowSurface::flush(QWidget *widget, const QRegion &region,
+                                   const QPoint &offset)
+{
+    QWidget *win = window();
+    if (!win)
+        return;
+
+#if !defined(QT_NO_QWS_PROXYSCREEN) && !defined(QT_NO_GRAPHICSVIEW)
+    QWExtra *extra = qt_widget_private(widget)->extraData();
+    if (extra && extra->proxyWidget)
+        return;
+#else
+    Q_UNUSED(widget);
+#endif
+
+    const quint8 windowOpacity = quint8(win->windowOpacity() * 0xff);
+    const QRect windowGeometry = geometry();
+#ifdef QT_DIRECTFB_WM
+    quint8 currentOpacity;
+    Q_ASSERT(dfbWindow);
+    dfbWindow->GetOpacity(dfbWindow, &currentOpacity);
+    if (currentOpacity != windowOpacity) {
+        dfbWindow->SetOpacity(dfbWindow, windowOpacity);
+    }
+
+    screen->flipSurface(dfbSurface, flipFlags, region, offset);
+#else
+    setOpaque(windowOpacity == 0xff);
+    if (mode == Offscreen) {
+        screen->exposeRegion(region.translated(offset + geometry().topLeft()), 0);
+    } else {
+        screen->flipSurface(dfbSurface, flipFlags, region, offset);
+    }
+#endif
+
+#ifdef QT_DIRECTFB_TIMING
+    enum { Secs = 3 };
+    ++frames;
+    if (timer.elapsed() >= Secs * 1000) {
+        qDebug("%d fps", int(double(frames) / double(Secs)));
+        frames = 0;
+        timer.restart();
+    }
+#endif
+    flushPending = false;
+}
+
+void QDirectFBWindowSurface::beginPaint(const QRegion &region)
+{
+    if (!engine) {
+        engine = new QDirectFBPaintEngine(this);
+    }
+
+    if (dfbSurface) {
+        const QWidget *win = window();
+        if (win && win->testAttribute(Qt::WA_NoSystemBackground)) {
+            QDirectFBScreen::solidFill(dfbSurface, Qt::transparent, region);
+        }
+    }
+    flushPending = true;
+}
+
+void QDirectFBWindowSurface::endPaint(const QRegion &)
+{
+#ifdef QT_NO_DIRECTFB_SUBSURFACE
+    unlockSurface();
+#endif
+}
+
+IDirectFBSurface *QDirectFBWindowSurface::directFBSurface() const
+{
+    return dfbSurface;
+}
+
+
+IDirectFBSurface *QDirectFBWindowSurface::surfaceForWidget(const QWidget *widget, QRect *rect) const
+{
+    Q_ASSERT(widget);
+    if (!dfbSurface)
+        return 0;
+    QWidget *win = window();
+    Q_ASSERT(win);
+    if (rect) {
+        if (win == widget) {
+            *rect = widget->rect();
+        } else {
+            *rect = QRect(widget->mapTo(win, QPoint(0, 0)), widget->size());
+        }
+    }
+
+    Q_ASSERT(win == widget || win->isAncestorOf(widget));
+    return dfbSurface;
+}
+
+void QDirectFBWindowSurface::releaseSurface()
+{
+    if (dfbSurface) {
+#ifdef QT_DIRECTFB_SUBSURFACE
+        releaseSubSurface();
+#else
+        unlockSurface();
+#endif
+#ifdef QT_NO_DIRECTFB_WM
+        Q_ASSERT(screen->primarySurface());
+        if (dfbSurface != screen->primarySurface())
+#endif
+
+            dfbSurface->Release(dfbSurface);
+        dfbSurface = 0;
+    }
+}
+
+void QDirectFBWindowSurface::updateIsOpaque()
+{
+    const QWidget *win = window();
+    Q_ASSERT(win);
+    if (win->testAttribute(Qt::WA_OpaquePaintEvent) || win->testAttribute(Qt::WA_PaintOnScreen)) {
+        setOpaque(true);
+        return;
+    }
+
+    if (qFuzzyCompare(static_cast<float>(win->windowOpacity()), 1.0f)) {
+        const QPalette &pal = win->palette();
+
+        if (win->autoFillBackground()) {
+            const QBrush &autoFillBrush = pal.brush(win->backgroundRole());
+            if (autoFillBrush.style() != Qt::NoBrush && autoFillBrush.isOpaque()) {
+                setOpaque(true);
+                return;
+            }
+        }
+
+        if (win->isWindow() && !win->testAttribute(Qt::WA_NoSystemBackground)) {
+            const QBrush &windowBrush = win->palette().brush(QPalette::Window);
+            if (windowBrush.style() != Qt::NoBrush && windowBrush.isOpaque()) {
+                setOpaque(true);
+                return;
+            }
+        }
+    }
+    setOpaque(false);
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_QWS_DIRECTFB