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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QBACKINGSTORE_COCOA_H
#define QBACKINGSTORE_COCOA_H
#include <QtGui/private/qrasterbackingstore_p.h>
#include <private/qcore_mac_p.h>
#include <QScopedPointer>
#include "qiosurfacegraphicsbuffer.h"
#include <unordered_map>
QT_BEGIN_NAMESPACE
class QCocoaBackingStore : public QPlatformBackingStore
{
protected:
QCocoaBackingStore(QWindow *window);
QCFType<CGColorSpaceRef> colorSpace() const;
};
class QCALayerBackingStore : public QObject, public QCocoaBackingStore
{
Q_OBJECT
public:
QCALayerBackingStore(QWindow *window);
~QCALayerBackingStore();
void resize(const QSize &size, const QRegion &staticContents) override;
void beginPaint(const QRegion ®ion) override;
QPaintDevice *paintDevice() override;
void endPaint() override;
bool scroll(const QRegion ®ion, int dx, int dy) override;
void flush(QWindow *, const QRegion &, const QPoint &) override;
FlushResult rhiFlush(QWindow *window,
const QRegion ®ion,
const QPoint &offset,
QPlatformTextureList *textures,
bool translucentBackground) override;
QImage toImage() const override;
QPlatformGraphicsBuffer *graphicsBuffer() const override;
private:
void observeBackingPropertiesChanges();
bool eventFilter(QObject *watched, QEvent *event) override;
QSize m_requestedSize;
class GraphicsBuffer : public QIOSurfaceGraphicsBuffer
{
public:
GraphicsBuffer(const QSize &size, qreal devicePixelRatio,
const QPixelFormat &format, QCFType<CGColorSpaceRef> colorSpace);
QRegion dirtyRegion; // In unscaled coordinates
QImage *asImage();
qreal devicePixelRatio() const { return m_devicePixelRatio; }
bool isDirty() const { return !dirtyRegion.isEmpty(); }
QRegion validRegion() const;
private:
qreal m_devicePixelRatio;
QImage m_image;
};
void updateDirtyStates(const QRegion &paintedRegion);
void ensureBackBuffer();
bool recreateBackBufferIfNeeded();
void finalizeBackBuffer();
void preserveFromFrontBuffer(const QRegion ®ion, const QPoint &offset = QPoint());
void backingPropertiesChanged();
QMacNotificationObserver m_backingPropertiesObserver;
std::list<std::unique_ptr<GraphicsBuffer>> m_buffers;
void flushSubWindow(QWindow *window);
std::unordered_map<QWindow*, std::unique_ptr<QCALayerBackingStore>> m_subWindowBackingstores;
void windowDestroyed(QObject *object);
bool m_clearSurfaceOnPaint = true;
};
QT_END_NAMESPACE
#endif
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