--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/painting/qwindowsurface_mac.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** 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 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
+    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
+}
+
+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