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Cocoa: If the grabRect is null then add in a null image for the area

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If it is null then it has nothing to grab, so a null QImage and QRect
is added to the lists so that there is still a representation in some
form for that display. This additionally ensures that it does take
up space for the display in the final image too.

Fixes: QTBUG-63086
Change-Id: I6e80ecc1170642025f6930e2211017c114e25c16
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
This commit is contained in:
Andy Shaw 2020-04-21 10:20:28 +02:00
parent 9e83d268d6
commit 7c7b09dbac
1 changed files with 10 additions and 1 deletions
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11
src/plugins/platforms/cocoa/qcocoascreen.mm
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@ -614,7 +614,11 @@ QPixmap QCocoaScreen::grabWindow(WId view, int x, int y, int width, int height)
QRect windowRect;
for (uint i = 0; i < displayCount; ++i) {
QRect displayBounds = QRectF::fromCGRect(CGDisplayBounds(displays[i])).toRect();
windowRect = windowRect.united(displayBounds);
// Only include the screen if it is positioned past the x/y position
if ((displayBounds.x() >= x || displayBounds.right() > x) &&
(displayBounds.y() >= y || displayBounds.bottom() > y)) {
windowRect = windowRect.united(displayBounds);
}
}
if (grabRect.width() < 0)
grabRect.setWidth(windowRect.width());
@ -631,6 +635,11 @@ QPixmap QCocoaScreen::grabWindow(WId view, int x, int y, int width, int height)
auto display = displays[i];
QRect displayBounds = QRectF::fromCGRect(CGDisplayBounds(display)).toRect();
QRect grabBounds = displayBounds.intersected(grabRect);
if (grabBounds.isNull()) {
destinations.append(QRect());
images.append(QImage());
continue;
}
QRect displayLocalGrabBounds = QRect(QPoint(grabBounds.topLeft() - displayBounds.topLeft()), grabBounds.size());
QImage displayImage = qt_mac_toQImage(QCFType<CGImageRef>(CGDisplayCreateImageForRect(display, displayLocalGrabBounds.toCGRect())));
displayImage.setDevicePixelRatio(displayImage.size().width() / displayLocalGrabBounds.size().width());