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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qwindowsdirect2dbackingstore.h"
#include "qwindowsdirect2dplatformpixmap.h"
#include "qwindowsdirect2dintegration.h"
#include "qwindowsdirect2dcontext.h"
#include "qwindowsdirect2dpaintdevice.h"
#include "qwindowsdirect2dbitmap.h"
#include "qwindowsdirect2ddevicecontext.h"
#include "qwindowsdirect2dwindow.h"
#include "qwindowscontext.h"
#include <QtGui/qpainter.h>
#include <QtGui/qwindow.h>
#include <QtCore/qdebug.h>
QT_BEGIN_NAMESPACE
/*!
\class QWindowsDirect2DBackingStore
\brief Backing store for windows.
\internal
*/
static inline QWindowsDirect2DPlatformPixmap *platformPixmap(QPixmap *p)
{
return static_cast<QWindowsDirect2DPlatformPixmap *>(p->handle());
}
static inline QWindowsDirect2DBitmap *bitmap(QPixmap *p)
{
return platformPixmap(p)->bitmap();
}
static inline QWindowsDirect2DWindow *nativeWindow(QWindow *window)
{
return static_cast<QWindowsDirect2DWindow *>(window->handle());
}
QWindowsDirect2DBackingStore::QWindowsDirect2DBackingStore(QWindow *window)
: QPlatformBackingStore(window)
{
}
QWindowsDirect2DBackingStore::~QWindowsDirect2DBackingStore()
{
}
void QWindowsDirect2DBackingStore::beginPaint(const QRegion ®ion)
{
QPixmap *pixmap = nativeWindow(window())->pixmap();
bitmap(pixmap)->deviceContext()->begin();
QPainter painter(pixmap);
QColor clear(Qt::transparent);
painter.setCompositionMode(QPainter::CompositionMode_Source);
for (const QRect &r : region)
painter.fillRect(r, clear);
}
void QWindowsDirect2DBackingStore::endPaint()
{
bitmap(nativeWindow(window())->pixmap())->deviceContext()->end();
}
QPaintDevice *QWindowsDirect2DBackingStore::paintDevice()
{
return nativeWindow(window())->pixmap();
}
void QWindowsDirect2DBackingStore::flush(QWindow *targetWindow, const QRegion ®ion, const QPoint &offset)
{
if (targetWindow != window()) {
QSharedPointer<QWindowsDirect2DBitmap> copy(nativeWindow(window())->copyBackBuffer());
nativeWindow(targetWindow)->flush(copy.data(), region, offset);
}
nativeWindow(targetWindow)->present(region);
}
void QWindowsDirect2DBackingStore::resize(const QSize &size, const QRegion ®ion)
{
QPixmap old = nativeWindow(window())->pixmap()->copy();
nativeWindow(window())->resizeSwapChain(size);
QPixmap *newPixmap = nativeWindow(window())->pixmap();
if (!old.isNull()) {
for (const QRect &rect : region)
platformPixmap(newPixmap)->copy(old.handle(), rect);
}
}
QImage QWindowsDirect2DBackingStore::toImage() const
{
return nativeWindow(window())->pixmap()->toImage();
}
QT_END_NAMESPACE
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