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// Copyright (C) 2011 - 2013 BlackBerry Limited. All rights reserved.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include "qqnxrasterbackingstore.h"
#include "qqnxrasterwindow.h"
#include "qqnxscreen.h"
#include "qqnxglobal.h"
#include <QtCore/QDebug>
#include <QtGui/QBackingStore>
#include <private/qhighdpiscaling_p.h>
#include <errno.h>
QT_BEGIN_NAMESPACE
QQnxRasterBackingStore::QQnxRasterBackingStore(QWindow *window)
: QPlatformBackingStore(window),
m_needsPosting(false),
m_scrolled(false)
{
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << window;
m_window = window;
}
QQnxRasterBackingStore::~QQnxRasterBackingStore()
{
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << window();
}
QPaintDevice *QQnxRasterBackingStore::paintDevice()
{
if (platformWindow() && platformWindow()->hasBuffers())
return platformWindow()->renderBuffer().image();
return 0;
}
void QQnxRasterBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset)
{
Q_UNUSED(offset);
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << this->window();
// Sometimes this method is called even though there is nothing to be
// flushed (posted in "screen" parlance), for instance, after an expose
// event directly follows a geometry change event.
if (!m_needsPosting)
return;
auto *targetWindow = window
? static_cast<QQnxRasterWindow *>(window->handle()) : platformWindow();
if (targetWindow)
targetWindow->post(region); // update the display with newly rendered content
m_needsPosting = false;
m_scrolled = false;
}
void QQnxRasterBackingStore::resize(const QSize &size, const QRegion &staticContents)
{
Q_UNUSED(staticContents);
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << window() << ", s =" << size;
// NOTE: defer resizing window buffers until next paint as
// resize() can be called multiple times before a paint occurs
m_requestedSize = size;
}
bool QQnxRasterBackingStore::scroll(const QRegion &area, int dx, int dy)
{
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << window();
m_needsPosting = true;
if (!m_scrolled) {
#if defined(QQNX_INCREMENTAL_RASTER_UPDATE)
platformWindow()->scroll(area, dx, dy, true);
#else
platformWindow()->scroll(area, dx, dy, false);
const QSize backingStoreSize = QHighDpi::toNativePixels(backingStore()->size(), window());
QRegion remainder = QRect(QPoint(0, 0), backingStoreSize);
remainder -= area.translated(dx, dy);
platformWindow()->scroll(remainder, 0, 0, true);
#endif
m_scrolled = true;
return true;
}
return false;
}
void QQnxRasterBackingStore::beginPaint(const QRegion ®ion)
{
Q_UNUSED(region);
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << window();
m_needsPosting = true;
platformWindow()->adjustBufferSize(
QHighDpi::toNativePixels(m_requestedSize, window()));
#if defined(QQNX_INCREMENTAL_RASTER_UPDATE)
if (window()->requestedFormat().alphaBufferSize() > 0) {
auto platformScreen = static_cast<QQnxScreen *>(platformWindow()->screen());
for (const QRect &r : region) {
// Clear transparent regions
const int bg[] = {
SCREEN_BLIT_COLOR, 0x00000000,
SCREEN_BLIT_DESTINATION_X, r.x(),
SCREEN_BLIT_DESTINATION_Y, r.y(),
SCREEN_BLIT_DESTINATION_WIDTH, r.width(),
SCREEN_BLIT_DESTINATION_HEIGHT, r.height(),
SCREEN_BLIT_END
};
Q_SCREEN_CHECKERROR(screen_fill(platformScreen->nativeContext(),
platformWindow()->renderBuffer().nativeBuffer(), bg),
"failed to clear transparent regions");
}
Q_SCREEN_CHECKERROR(screen_flush_blits(platformScreen->nativeContext(),
SCREEN_WAIT_IDLE), "failed to flush blits");
}
#else
if (!m_scrolled) {
const QSize backingStoreSize = QHighDpi::toNativePixels(backingStore()->size(), window());
platformWindow()->scroll(QRect(QPoint(0, 0), backingStoreSize), 0, 0, true);
}
#endif
}
void QQnxRasterBackingStore::endPaint()
{
qCDebug(lcQpaBackingStore) << Q_FUNC_INFO << "w =" << window();
}
QQnxRasterWindow *QQnxRasterBackingStore::platformWindow() const
{
Q_ASSERT(m_window->handle());
return static_cast<QQnxRasterWindow*>(m_window->handle());
}
QT_END_NAMESPACE