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139 lines
4.6 KiB
C++
139 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qwindowsurface_mac_p.h"
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#include <qt_mac_p.h>
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#include <qt_cocoa_helpers_mac_p.h>
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#include <QtGui/qwidget.h>
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QT_BEGIN_NAMESPACE
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struct QMacWindowSurfacePrivate
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{
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QWidget *widget;
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QPixmap device;
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};
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QMacWindowSurface::QMacWindowSurface(QWidget *widget)
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: QWindowSurface(widget), d_ptr(new QMacWindowSurfacePrivate)
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{
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d_ptr->widget = widget;
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}
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QMacWindowSurface::~QMacWindowSurface()
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{
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delete d_ptr;
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}
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QPaintDevice *QMacWindowSurface::paintDevice()
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{
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return &d_ptr->device;
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}
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void QMacWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
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{
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Q_UNUSED(offset);
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// Get a context for the widget.
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#ifndef QT_MAC_USE_COCOA
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CGContextRef context;
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CGrafPtr port = GetWindowPort(qt_mac_window_for(widget));
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QDBeginCGContext(port, &context);
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#else
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extern CGContextRef qt_mac_graphicsContextFor(QWidget *);
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CGContextRef context = qt_mac_graphicsContextFor(widget);
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#endif
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CGContextRetain(context);
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CGContextSaveGState(context);
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// Flip context.
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CGContextTranslateCTM(context, 0, widget->height());
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CGContextScaleCTM(context, 1, -1);
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// Clip to region.
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const QVector<QRect> &rects = rgn.rects();
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for (int i = 0; i < rects.size(); ++i) {
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const QRect &rect = rects.at(i);
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CGContextAddRect(context, CGRectMake(rect.x(), rect.y(), rect.width(), rect.height()));
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}
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CGContextClip(context);
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// Draw the image onto the window.
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const CGRect dest = CGRectMake(0, 0, widget->width(), widget->height());
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const CGImageRef image = d_ptr->device.toMacCGImageRef();
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qt_mac_drawCGImage(context, &dest, image);
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CFRelease(image);
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// Restore context.
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CGContextRestoreGState(context);
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#ifndef QT_MAC_USE_COCOA
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QDEndCGContext(port, &context);
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#else
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CGContextFlush(context);
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#endif
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CGContextRelease(context);
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}
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void QMacWindowSurface::setGeometry(const QRect &rect)
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{
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QWindowSurface::setGeometry(rect);
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const QSize size = rect.size();
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if (d_ptr->device.size() != size)
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d_ptr->device = QPixmap(size);
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}
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bool QMacWindowSurface::scroll(const QRegion &area, int dx, int dy)
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{
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if (d_ptr->device.size().isNull())
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return false;
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QCFType<CGImageRef> image = d_ptr->device.toMacCGImageRef();
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const QRect rect(area.boundingRect());
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const CGRect dest = CGRectMake(rect.x(), rect.y(), rect.width(), rect.height());
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QCFType<CGImageRef> subimage = CGImageCreateWithImageInRect(image, dest);
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QCFType<CGContextRef> context = qt_mac_cg_context(&d_ptr->device);
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CGContextTranslateCTM(context, dx, dy);
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qt_mac_drawCGImage(context, &dest, subimage);
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return true;
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}
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QT_END_NAMESPACE
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