1 files changed, 441 insertions, 0 deletions
diff --git a/src/plugins/gfxdrivers/directfb/qdirectfbwindowsurface.cpp b/src/plugins/gfxdrivers/directfb/qdirectfbwindowsurface.cpp
new file mode 100644
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+++ b/src/plugins/gfxdrivers/directfb/qdirectfbwindowsurface.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdirectfbwindowsurface.h"
+#include "qdirectfbscreen.h"
+#include "qdirectfbpaintengine.h"
+
+#include <qwidget.h>
+#include <qpaintdevice.h>
+#include <qvarlengtharray.h>
+
+
+//#define QT_DIRECTFB_DEBUG_SURFACES 1
+
+QDirectFBWindowSurface::QDirectFBWindowSurface(DFBSurfaceFlipFlags flip, QDirectFBScreen *scr)
+    : QDirectFBPaintDevice(scr)
+#ifndef QT_NO_DIRECTFB_WM
+    , dfbWindow(0)
+#endif
+    , engine(0)
+    , flipFlags(flip)
+    , boundingRectFlip(scr->directFBFlags() & QDirectFBScreen::BoundingRectFlip)
+{
+    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
+    , engine(0)
+    , flipFlags(flip)
+    , boundingRectFlip(scr->directFBFlags() & QDirectFBScreen::BoundingRectFlip)
+{
+    onscreen = widget->testAttribute(Qt::WA_PaintOnScreen);
+    if (onscreen)
+        setSurfaceFlags(Opaque | RegionReserved);
+    else
+        setSurfaceFlags(Opaque | Buffered);
+#ifdef QT_DIRECTFB_TIMING
+    frames = 0;
+    timer.start();
+#endif
+}
+
+QDirectFBWindowSurface::~QDirectFBWindowSurface()
+{
+}
+
+bool QDirectFBWindowSurface::isValid() const
+{
+    return true;
+}
+
+#ifndef QT_NO_DIRECTFB_WM
+void QDirectFBWindowSurface::createWindow()
+{
+#ifdef QT_NO_DIRECTFB_LAYER
+#warning QT_NO_DIRECTFB_LAYER requires QT_NO_DIRECTFB_WM
+#else
+    IDirectFBDisplayLayer *layer = screen->dfbDisplayLayer();
+    if (!layer)
+        qFatal("QDirectFBWindowSurface: Unable to get primary display layer!");
+
+    DFBWindowDescription description;
+    description.caps = DFBWindowCapabilities(DWCAPS_NODECORATION);
+    description.flags = DFBWindowDescriptionFlags(DWDESC_CAPS
+                                                  |DWDESC_SURFACE_CAPS
+                                                  |DWDESC_PIXELFORMAT);
+
+    description.surface_caps = DSCAPS_NONE;
+    if (screen->directFBFlags() & QDirectFBScreen::VideoOnly)
+        description.surface_caps = DFBSurfaceCapabilities(description.surface_caps|DSCAPS_VIDEOONLY);
+    const QImage::Format format = screen->pixelFormat();
+    description.pixelformat = QDirectFBScreen::getSurfacePixelFormat(format);
+    if (QDirectFBScreen::isPremultiplied(format))
+        description.surface_caps = DFBSurfaceCapabilities(DSCAPS_PREMULTIPLIED|description.caps);
+
+    DFBResult result = layer->CreateWindow(layer, &description, &dfbWindow);
+    if (result != DFB_OK)
+        DirectFBErrorFatal("QDirectFBWindowSurface::createWindow", result);
+
+    if (dfbSurface)
+        dfbSurface->Release(dfbSurface);
+
+    dfbWindow->GetSurface(dfbWindow, &dfbSurface);
+    forceRaster = (format == QImage::Format_RGB32);
+#endif
+}
+#endif // QT_NO_DIRECTFB_WM
+
+void QDirectFBWindowSurface::setGeometry(const QRect &rect, const QRegion &mask)
+{
+    if (rect.isNull()) {
+#ifndef QT_NO_DIRECTFB_WM
+        if (dfbWindow) {
+            dfbWindow->Release(dfbWindow);
+            dfbWindow = 0;
+        }
+#endif
+        if (dfbSurface && dfbSurface != screen->dfbSurface()) {
+            dfbSurface->Release(dfbSurface);
+            dfbSurface = 0;
+        }
+    } else if (rect != geometry()) {
+        DFBResult result = DFB_OK;
+
+        // If we're in a resize, the surface shouldn't be locked
+        Q_ASSERT((lockedImage == 0) || (rect.size() == geometry().size()));
+
+        if (onscreen) {
+            IDirectFBSurface *primarySurface = screen->dfbSurface();
+            Q_ASSERT(primarySurface);
+            if (dfbSurface && dfbSurface != primarySurface)
+                dfbSurface->Release(dfbSurface);
+
+            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);
+            }
+            forceRaster = (dfbSurface && QDirectFBScreen::getImageFormat(dfbSurface) == QImage::Format_RGB32);
+        } else {
+            const bool isResize = rect.size() != geometry().size();
+#ifdef QT_NO_DIRECTFB_WM
+            if (isResize) {
+                if (dfbSurface)
+                    dfbSurface->Release(dfbSurface);
+
+                IDirectFB *dfb = screen->dfb();
+                if (!dfb) {
+                    qFatal("QDirectFBWindowSurface::setGeometry(): "
+                           "Unable to get DirectFB handle!");
+                }
+
+                dfbSurface = screen->createDFBSurface(rect.size(), screen->pixelFormat(), QDirectFBScreen::DontTrackSurface);
+                forceRaster = (dfbSurface && QDirectFBScreen::getImageFormat(dfbSurface) == QImage::Format_RGB32);
+            } else {
+                Q_ASSERT(dfbSurface);
+            }
+#else
+            const QRect oldRect = geometry();
+            const bool isMove = oldRect.isEmpty() ||
+                                rect.topLeft() != oldRect.topLeft();
+
+            if (!dfbWindow)
+                createWindow();
+
+            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());
+#endif
+        }
+
+        if (result != DFB_OK)
+            DirectFBErrorFatal("QDirectFBWindowSurface::setGeometry()", result);
+    }
+
+    QWSWindowSurface::setGeometry(rect, mask);
+}
+
+QByteArray QDirectFBWindowSurface::permanentState() const
+{
+    QByteArray array;
+#ifdef QT_NO_DIRECTFB_WM
+    array.resize(sizeof(SurfaceFlags) + sizeof(IDirectFBSurface*));
+#else
+    array.resize(sizeof(SurfaceFlags));
+#endif
+    char *ptr = array.data();
+
+    *reinterpret_cast<SurfaceFlags*>(ptr) = surfaceFlags();
+    ptr += sizeof(SurfaceFlags);
+
+#ifdef QT_NO_DIRECTFB_WM
+    *reinterpret_cast<IDirectFBSurface**>(ptr) = dfbSurface;
+#endif
+    return array;
+}
+
+void QDirectFBWindowSurface::setPermanentState(const QByteArray &state)
+{
+    SurfaceFlags flags;
+    const char *ptr = state.constData();
+
+    flags = *reinterpret_cast<const SurfaceFlags*>(ptr);
+    setSurfaceFlags(flags);
+
+#ifdef QT_NO_DIRECTFB_WM
+    ptr += sizeof(SurfaceFlags);
+    dfbSurface = *reinterpret_cast<IDirectFBSurface* const*>(ptr);
+#endif
+}
+
+bool QDirectFBWindowSurface::scroll(const QRegion &region, int dx, int dy)
+{
+    if (!dfbSurface || !(flipFlags & DSFLIP_BLIT))
+        return false;
+
+    const QVector<QRect> rects = region.rects();
+    const int n = rects.size();
+
+    QVarLengthArray<DFBRectangle, 8> dfbRects(n);
+    QVarLengthArray<DFBPoint, 8> dfbPoints(n);
+
+    for (int i = 0; i < n; ++i) {
+        const QRect r = rects.at(i);
+        dfbRects[i].x = r.x();
+        dfbRects[i].y = r.y();
+        dfbRects[i].w = r.width();
+        dfbRects[i].h = r.height();
+        dfbPoints[i].x = r.x() + dx;
+        dfbPoints[i].y = r.y() + dy;
+    }
+
+    dfbSurface->SetBlittingFlags(dfbSurface, DSBLIT_NOFX);
+    dfbSurface->BatchBlit(dfbSurface, dfbSurface,
+                          dfbRects.data(), dfbPoints.data(), n);
+    dfbSurface->ReleaseSource(dfbSurface);
+    return true;
+}
+
+bool QDirectFBWindowSurface::move(const QPoint &offset)
+{
+    QWSWindowSurface::move(offset);
+
+#ifdef QT_NO_DIRECTFB_WM
+    return true; // buffered
+#else
+    if (!dfbWindow)
+        return false;
+
+    DFBResult status = dfbWindow->Move(dfbWindow, offset.x(), offset.y());
+    return (status == DFB_OK);
+#endif
+}
+
+QRegion QDirectFBWindowSurface::move(const QPoint &offset, const QRegion &newClip)
+{
+#ifdef QT_NO_DIRECTFB_WM
+    return QWSWindowSurface::move(offset, newClip);
+#else
+    Q_UNUSED(offset);
+    Q_UNUSED(newClip);
+
+    // DirectFB handles the entire move, so there's no need to blit.
+    return QRegion();
+#endif
+}
+
+QPaintEngine* QDirectFBWindowSurface::paintEngine() const
+{
+    if (!engine) {
+        QDirectFBWindowSurface *that = const_cast<QDirectFBWindowSurface*>(this);
+        that->engine = new QDirectFBPaintEngine(that);
+        return that->engine;
+    }
+    return engine;
+}
+
+// hw: XXX: copied from QWidgetPrivate::isOpaque()
+inline bool isWidgetOpaque(const QWidget *w)
+{
+    if (w->testAttribute(Qt::WA_OpaquePaintEvent)
+        || w->testAttribute(Qt::WA_PaintOnScreen))
+        return true;
+
+    const QPalette &pal = w->palette();
+
+    if (w->autoFillBackground()) {
+        const QBrush &autoFillBrush = pal.brush(w->backgroundRole());
+        if (autoFillBrush.style() != Qt::NoBrush && autoFillBrush.isOpaque())
+            return true;
+    }
+
+    if (!w->testAttribute(Qt::WA_NoSystemBackground)) {
+        const QBrush &windowBrush = w->palette().brush(QPalette::Window);
+        if (windowBrush.style() != Qt::NoBrush && windowBrush.isOpaque())
+            return true;
+    }
+
+    return false;
+}
+void QDirectFBWindowSurface::flush(QWidget *widget, const QRegion &region,
+                                   const QPoint &offset)
+{
+    Q_UNUSED(widget);
+#ifdef QT_NO_DIRECTFB_WM
+    Q_UNUSED(region);
+    Q_UNUSED(offset);
+#endif
+
+    QWidget *win = window();
+
+    // hw: make sure opacity information is updated before compositing
+    const bool opaque = isWidgetOpaque(win);
+    if (opaque != isOpaque()) {
+        SurfaceFlags flags = Buffered;
+        if (opaque)
+            flags |= Opaque;
+        setSurfaceFlags(flags);
+    }
+
+#ifndef QT_NO_DIRECTFB_WM
+    const quint8 winOpacity = quint8(win->windowOpacity() * 255);
+    quint8 opacity;
+
+    if (dfbWindow) {
+        dfbWindow->GetOpacity(dfbWindow, &opacity);
+        if (winOpacity != opacity)
+            dfbWindow->SetOpacity(dfbWindow, winOpacity);
+    }
+    if (!(flipFlags & DSFLIP_BLIT)) {
+        dfbSurface->Flip(dfbSurface, 0, flipFlags);
+    } else {
+        if (!boundingRectFlip && region.numRects() > 1) {
+            const QVector<QRect> rects = region.rects();
+            const DFBSurfaceFlipFlags nonWaitFlags = DFBSurfaceFlipFlags(flipFlags & ~DSFLIP_WAIT);
+            for (int i=0; i<rects.size(); ++i) {
+                const QRect &r = rects.at(i);
+                const DFBRegion dfbReg = { r.x() + offset.x(), r.y() + offset.y(),
+                                           r.x() + r.width() + offset.x(),
+                                           r.y() + r.height() + offset.y() };
+                dfbSurface->Flip(dfbSurface, &dfbReg, i + 1 < rects.size() ? nonWaitFlags : flipFlags);
+            }
+        } else {
+            const QRect r = region.boundingRect();
+            const DFBRegion dfbReg = { r.x() + offset.x(), r.y() + offset.y(),
+                                       r.x() + r.width() + offset.x(),
+                                       r.y() + r.height() + offset.y() };
+            dfbSurface->Flip(dfbSurface, &dfbReg, flipFlags);
+        }
+    }
+#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
+}
+
+
+void QDirectFBWindowSurface::beginPaint(const QRegion &)
+{
+}
+
+void QDirectFBWindowSurface::endPaint(const QRegion &)
+{
+#ifdef QT_DIRECTFB_DEBUG_SURFACES
+    if (bufferImages.count()) {
+        qDebug("QDirectFBWindowSurface::endPaint() this=%p", this);
+
+        foreach(QImage* bufferImg, bufferImages)
+            qDebug("   Deleting buffer image %p", bufferImg);
+    }
+#endif
+
+    qDeleteAll(bufferImages);
+    bufferImages.clear();
+    unlockDirectFB();
+}
+
+
+QImage *QDirectFBWindowSurface::buffer(const QWidget *widget)
+{
+    if (!lockedImage)
+        return 0;
+
+    const QRect rect = QRect(offset(widget), widget->size())
+                       & lockedImage->rect();
+    if (rect.isEmpty())
+        return 0;
+
+    QImage *img = new QImage(lockedImage->scanLine(rect.y())
+                             + rect.x() * (lockedImage->depth() / 8),
+                             rect.width(), rect.height(),
+                             lockedImage->bytesPerLine(),
+                             lockedImage->format());
+    bufferImages.append(img);
+
+#ifdef QT_DIRECTFB_DEBUG_SURFACES
+    qDebug("QDirectFBWindowSurface::buffer() Created & returned %p", img);
+#endif
+
+    return img;
+}
+