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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenVG module 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 "qwindowsurface_vglite.h"
#include "qgraphicssystem_vglite.h"
#include <QtOpenVG/qvg.h>
#include <QtOpenVG/private/qvg_p.h>
#include <QtOpenVG/private/qpaintengine_vg_p.h>
QT_BEGIN_NAMESPACE
QVGLiteWindowSurface::QVGLiteWindowSurface
(QVGLiteGraphicsSystem *gs, QWidget *window)
: QWindowSurface(window), graphicsSystem(gs),
isPaintingActive(false), engine(0)
{
}
QVGLiteWindowSurface::~QVGLiteWindowSurface()
{
graphicsSystem->surface = 0;
if (engine)
qt_vg_destroy_paint_engine(engine);
}
QPaintDevice *QVGLiteWindowSurface::paintDevice()
{
qt_vg_make_current(graphicsSystem->context, graphicsSystem->rootWindow);
isPaintingActive = true;
// TODO: clear the parts of the back buffer that are not
// covered by the window surface to black.
return this;
}
void QVGLiteWindowSurface::flush(QWidget *widget, const QRegion ®ion, const QPoint &offset)
{
Q_UNUSED(widget);
Q_UNUSED(region);
Q_UNUSED(offset);
QEglContext *context = graphicsSystem->context;
if (context) {
if (!isPaintingActive)
qt_vg_make_current(context, graphicsSystem->rootWindow);
context->swapBuffers();
qt_vg_done_current(context);
context->setSurface(EGL_NO_SURFACE);
isPaintingActive = false;
}
}
void QVGLiteWindowSurface::setGeometry(const QRect &rect)
{
QWindowSurface::setGeometry(rect);
}
bool QVGLiteWindowSurface::scroll(const QRegion &area, int dx, int dy)
{
return QWindowSurface::scroll(area, dx, dy);
}
void QVGLiteWindowSurface::beginPaint(const QRegion ®ion)
{
Q_UNUSED(region);
}
void QVGLiteWindowSurface::endPaint(const QRegion ®ion)
{
Q_UNUSED(region);
}
QPaintEngine *QVGLiteWindowSurface::paintEngine() const
{
if (!engine)
engine = qt_vg_create_paint_engine();
return engine;
}
// We need to get access to QWidget::metric() from QVGLiteWindowSurface::metric,
// but it is not a friend of QWidget. To get around this, we create a
// fake QX11PaintEngine class, which is a friend.
class QX11PaintEngine
{
public:
static int metric(const QWidget *widget, QPaintDevice::PaintDeviceMetric met)
{
return widget->metric(met);
}
};
int QVGLiteWindowSurface::metric(PaintDeviceMetric met) const
{
return QX11PaintEngine::metric(window(), met);
}
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