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/****************************************************************************
**
** Copyright (C) 2010 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 "qgraphicssystem_trace_p.h"
#include <private/qpixmap_raster_p.h>
#include <private/qpaintbuffer_p.h>
#include <private/qwindowsurface_raster_p.h>
#include <QFile>
#include <QPainter>
#include <QtDebug>
QT_BEGIN_NAMESPACE
class QTraceWindowSurface : public QRasterWindowSurface
{
public:
QTraceWindowSurface(QWidget *widget);
~QTraceWindowSurface();
QPaintDevice *paintDevice();
void beginPaint(const QRegion &rgn);
void endPaint(const QRegion &rgn);
bool scroll(const QRegion &area, int dx, int dy);
private:
QPaintBuffer *buffer;
QList<QRegion> updates;
qulonglong winId;
};
QTraceWindowSurface::QTraceWindowSurface(QWidget *widget)
: QRasterWindowSurface(widget)
, buffer(0)
, winId(0)
{
}
QTraceWindowSurface::~QTraceWindowSurface()
{
if (buffer) {
QFile outputFile(QString(QLatin1String("qtgraphics-%0.trace")).arg(winId));
if (outputFile.open(QIODevice::WriteOnly)) {
QDataStream out(&outputFile);
out.writeBytes("qttrace", 7);
out << *buffer << updates;
}
delete buffer;
}
}
QPaintDevice *QTraceWindowSurface::paintDevice()
{
if (!buffer) {
buffer = new QPaintBuffer;
buffer->setBoundingRect(geometry());
}
return buffer;
}
void QTraceWindowSurface::beginPaint(const QRegion &rgn)
{
// ensure paint buffer is created
paintDevice();
buffer->beginNewFrame();
QRasterWindowSurface::beginPaint(rgn);
}
void QTraceWindowSurface::endPaint(const QRegion &rgn)
{
QPainter p(QRasterWindowSurface::paintDevice());
buffer->draw(&p, buffer->numFrames()-1);
p.end();
winId = (qulonglong)window()->winId();
updates << rgn;
QRasterWindowSurface::endPaint(rgn);
}
bool QTraceWindowSurface::scroll(const QRegion &, int, int)
{
// TODO: scrolling should also be streamed and replayed
// to test scrolling performance
return false;
}
QTraceGraphicsSystem::QTraceGraphicsSystem()
{
}
QPixmapData *QTraceGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
{
return new QRasterPixmapData(type);
}
QWindowSurface *QTraceGraphicsSystem::createWindowSurface(QWidget *widget) const
{
return new QTraceWindowSurface(widget);
}
QT_END_NAMESPACE
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