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diff --git a/examples/qws/svgalib/svgalibpaintengine.cpp b/examples/qws/svgalib/svgalibpaintengine.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 examples 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 "svgalibpaintengine.h"
+
+#include <QColor>
+#include <vga.h>
+#include <vgagl.h>
+
+SvgalibPaintEngine::SvgalibPaintEngine()
+{
+}
+
+SvgalibPaintEngine::~SvgalibPaintEngine()
+{
+}
+
+//! [0]
+bool SvgalibPaintEngine::begin(QPaintDevice *dev)
+{
+ device = dev;
+ pen = Qt::NoPen;
+ simplePen = true;
+ brush = Qt::NoBrush;
+ simpleBrush = true;
+ matrix = QMatrix();
+ simpleMatrix = true;
+ setClip(QRect(0, 0, device->width(), device->height()));
+ opaque = true;
+ aliased = true;
+ sourceOver = true;
+
+ return QRasterPaintEngine::begin(dev);
+}
+//! [0]
+
+//! [1]
+bool SvgalibPaintEngine::end()
+{
+ gl_setclippingwindow(0, 0, device->width() - 1, device->height() - 1);
+ return QRasterPaintEngine::end();
+}
+//! [1]
+
+//! [2]
+void SvgalibPaintEngine::updateState(const QPaintEngineState &state)
+{
+ QPaintEngine::DirtyFlags flags = state.state();
+
+ if (flags & DirtyTransform) {
+ matrix = state.matrix();
+ simpleMatrix = (matrix.m12() == 0 && matrix.m21() == 0);
+ }
+
+ if (flags & DirtyPen) {
+ pen = state.pen();
+ simplePen = (pen.width() == 0 || pen.widthF() <= 1)
+ && (pen.style() == Qt::NoPen || pen.style() == Qt::SolidLine)
+ && (pen.color().alpha() == 255);
+ }
+
+ if (flags & DirtyBrush) {
+ brush = state.brush();
+ simpleBrush = (brush.style() == Qt::SolidPattern
+ || brush.style() == Qt::NoBrush)
+ && (brush.color().alpha() == 255);
+ }
+
+ if (flags & DirtyClipRegion)
+ setClip(state.clipRegion());
+
+ if (flags & DirtyClipEnabled) {
+ clipEnabled = state.isClipEnabled();
+ updateClip();
+ }
+
+ if (flags & DirtyClipPath) {
+ setClip(QRegion());
+ simpleClip = false;
+ }
+
+ if (flags & DirtyCompositionMode) {
+ const QPainter::CompositionMode m = state.compositionMode();
+ sourceOver = (m == QPainter::CompositionMode_SourceOver);
+ }
+
+ if (flags & DirtyOpacity)
+ opaque = (state.opacity() == 256);
+
+ if (flags & DirtyHints)
+ aliased = !(state.renderHints() & QPainter::Antialiasing);
+
+ QRasterPaintEngine::updateState(state);
+}
+//! [2]
+
+//! [3]
+void SvgalibPaintEngine::setClip(const QRegion &region)
+{
+ if (region.isEmpty())
+ clip = QRect(0, 0, device->width(), device->height());
+ else
+ clip = matrix.map(region) & QRect(0, 0, device->width(), device->height());
+ clipEnabled = true;
+ updateClip();
+}
+//! [3]
+
+//! [4]
+void SvgalibPaintEngine::updateClip()
+{
+ QRegion clipRegion = QRect(0, 0, device->width(), device->height());
+
+ if (!systemClip().isEmpty())
+ clipRegion &= systemClip();
+ if (clipEnabled)
+ clipRegion &= clip;
+
+ simpleClip = (clipRegion.rects().size() <= 1);
+
+ const QRect r = clipRegion.boundingRect();
+ gl_setclippingwindow(r.left(), r.top(),
+ r.x() + r.width(),
+ r.y() + r.height());
+}
+//! [4]
+
+//! [5]
+void SvgalibPaintEngine::drawRects(const QRect *rects, int rectCount)
+{
+ const bool canAccelerate = simplePen && simpleBrush && simpleMatrix
+ && simpleClip && opaque && aliased
+ && sourceOver;
+ if (!canAccelerate) {
+ QRasterPaintEngine::drawRects(rects, rectCount);
+ return;
+ }
+
+ for (int i = 0; i < rectCount; ++i) {
+ const QRect r = matrix.mapRect(rects[i]);
+ if (brush != Qt::NoBrush) {
+ gl_fillbox(r.left(), r.top(), r.width(), r.height(),
+ brush.color().rgba());
+ }
+ if (pen != Qt::NoPen) {
+ const int c = pen.color().rgba();
+ gl_hline(r.left(), r.top(), r.right(), c);
+ gl_hline(r.left(), r.bottom(), r.right(), c);
+ gl_line(r.left(), r.top(), r.left(), r.bottom(), c);
+ gl_line(r.right(), r.top(), r.right(), r.bottom(), c);
+ }
+ }
+}
+//! [5]