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/****************************************************************************
**
** 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 QtGui 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_mac_p.h"
#include <private/qt_mac_p.h>
#include <private/qt_cocoa_helpers_mac_p.h>
#include <QtGui/qwidget.h>
QT_BEGIN_NAMESPACE
struct QMacWindowSurfacePrivate
{
QWidget *widget;
QPixmap device;
};
QMacWindowSurface::QMacWindowSurface(QWidget *widget)
: QWindowSurface(widget), d_ptr(new QMacWindowSurfacePrivate)
{
d_ptr->widget = widget;
}
QMacWindowSurface::~QMacWindowSurface()
{
delete d_ptr;
}
QPaintDevice *QMacWindowSurface::paintDevice()
{
return &d_ptr->device;
}
void QMacWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
Q_UNUSED(offset);
// Get a context for the widget.
#ifndef QT_MAC_USE_COCOA
CGContextRef context;
CGrafPtr port = GetWindowPort(qt_mac_window_for(widget));
QDBeginCGContext(port, &context);
#else
extern CGContextRef qt_mac_graphicsContextFor(QWidget *);
CGContextRef context = qt_mac_graphicsContextFor(widget);
#endif
CGContextRetain(context);
CGContextSaveGState(context);
// Flip context.
CGContextTranslateCTM(context, 0, widget->height());
CGContextScaleCTM(context, 1, -1);
// Clip to region.
const QVector<QRect> &rects = rgn.rects();
for (int i = 0; i < rects.size(); ++i) {
const QRect &rect = rects.at(i);
CGContextAddRect(context, CGRectMake(rect.x(), rect.y(), rect.width(), rect.height()));
}
CGContextClip(context);
// Draw the image onto the window.
const CGRect dest = CGRectMake(0, 0, widget->width(), widget->height());
const CGImageRef image = d_ptr->device.toMacCGImageRef();
qt_mac_drawCGImage(context, &dest, image);
CFRelease(image);
// Restore context.
CGContextRestoreGState(context);
#ifndef QT_MAC_USE_COCOA
QDEndCGContext(port, &context);
#else
CGContextFlush(context);
#endif
CGContextRelease(context);
}
void QMacWindowSurface::setGeometry(const QRect &rect)
{
QWindowSurface::setGeometry(rect);
const QSize size = rect.size();
if (d_ptr->device.size() != size)
d_ptr->device = QPixmap(size);
}
bool QMacWindowSurface::scroll(const QRegion &area, int dx, int dy)
{
if (d_ptr->device.size().isNull())
return false;
QCFType<CGImageRef> image = d_ptr->device.toMacCGImageRef();
const QRect rect(area.boundingRect());
const CGRect dest = CGRectMake(rect.x(), rect.y(), rect.width(), rect.height());
QCFType<CGImageRef> subimage = CGImageCreateWithImageInRect(image, dest);
QCFType<CGContextRef> context = qt_mac_cg_context(&d_ptr->device);
CGContextTranslateCTM(context, dx, dy);
qt_mac_drawCGImage(context, &dest, subimage);
return true;
}
QT_END_NAMESPACE
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