void QXcbBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset)
{
if (!m_image || m_image->size().isEmpty())
return;
QSize imageSize = m_image->size();
QRegion clipped = region;
clipped &= QRect(0, 0, window->width(), window->height());
clipped &= QRect(0, 0, imageSize.width(), imageSize.height()).translated(-offset);
QRect bounds = clipped.boundingRect();
if (bounds.isNull())
return;
Q_XCB_NOOP(connection());
QXcbWindow *platformWindow = static_cast<QXcbWindow *>(window->handle());
QVector<QRect> rects = clipped.rects();
for (int i = 0; i < rects.size(); ++i)
m_image->put(platformWindow->xcb_window(), rects.at(i).topLeft(), rects.at(i).translated(offset));
Q_XCB_NOOP(connection());
if (m_syncingResize) {
xcb_flush(xcb_connection());
connection()->sync();
m_syncingResize = false;
platformWindow->updateSyncRequestCounter();
}
}
void QXcbWindowSurface::flush(QWidget *widget, const QRegion ®ion, const QPoint &offset)
{
QRect bounds = region.boundingRect();
if (size().isEmpty() || !geometry().contains(bounds))
return;
Q_XCB_NOOP(connection());
QXcbWindow *window = static_cast<QXcbWindow *>(widget->window()->platformWindow());
extern QWidgetData* qt_widget_data(QWidget *);
QPoint widgetOffset = qt_qwidget_data(widget)->wrect.topLeft();
QVector<QRect> rects = region.rects();
for (int i = 0; i < rects.size(); ++i)
m_image->put(window->window(), rects.at(i).topLeft() - widgetOffset, rects.at(i).translated(offset));
Q_XCB_NOOP(connection());
if (m_syncingResize) {
xcb_flush(xcb_connection());
connection()->sync();
m_syncingResize = false;
window->updateSyncRequestCounter();
}
}
void QXcbNativeBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset)
{
if (m_pixmap.isNull())
return;
QSize pixmapSize = m_pixmap.size();
QRegion clipped = region;
clipped &= QRect(QPoint(), QHighDpi::toNativePixels(window->size(), window));
clipped &= QRect(0, 0, pixmapSize.width(), pixmapSize.height()).translated(-offset);
QRect br = clipped.boundingRect();
if (br.isNull())
return;
QXcbWindow *platformWindow = static_cast<QXcbWindow *>(window->handle());
if (!platformWindow) {
qWarning("QXcbBackingStore::flush: QWindow has no platform window (QTBUG-32681)");
return;
}
Window wid = platformWindow->xcb_window();
Pixmap pid = qt_x11PixmapHandle(m_pixmap);
QVector<XRectangle> clipRects = qt_region_to_xrectangles(clipped);
#if QT_CONFIG(xrender)
if (m_translucentBackground)
{
XWindowAttributes attrib;
XGetWindowAttributes(display(), wid, &attrib);
XRenderPictFormat *format = XRenderFindVisualFormat(display(), attrib.visual);
Picture srcPic = qt_x11PictureHandle(m_pixmap);
Picture dstPic = XRenderCreatePicture(display(), wid, format, 0, 0);
XRenderSetPictureClipRectangles(display(), dstPic, 0, 0, clipRects.constData(), clipRects.size());
XRenderComposite(display(), PictOpSrc, srcPic, None, dstPic,
br.x() + offset.x(), br.y() + offset.y(),
0, 0,
br.x(), br.y(),
br.width(), br.height());
XRenderFreePicture(display(), dstPic);
}
else
#endif
{
GC gc = XCreateGC(display(), wid, 0, Q_NULLPTR);
if (clipRects.size() != 1)
XSetClipRectangles(display(), gc, 0, 0, clipRects.data(), clipRects.size(), YXBanded);
XCopyArea(display(), pid, wid, gc, br.x() + offset.x(), br.y() + offset.y(), br.width(), br.height(), br.x(), br.y());
XFreeGC(display(), gc);
}
if (platformWindow->needsSync()) {
platformWindow->updateSyncRequestCounter();
} else {
XFlush(display());
}
}