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Reduce nesting in processWindowScreenChangedEvent()

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Replace if-block with early return on null QWindow.

Pick-to: 6.6
Task-number: QTBUG-116232
Change-Id: Iaf402edfd9b03734b64fdf707834fa92c827a1dc
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
This commit is contained in:
Morten Sørvig 2023-08-23 10:09:31 +02:00
parent f5b4a18b56
commit 198eaaf523
1 changed files with 21 additions and 19 deletions
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40
src/gui/kernel/qguiapplication.cpp
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@ -2579,28 +2579,30 @@ void QGuiApplicationPrivate::processWindowStateChangedEvent(QWindowSystemInterfa
void QGuiApplicationPrivate::processWindowScreenChangedEvent(QWindowSystemInterfacePrivate::WindowScreenChangedEvent *wse)
{
if (QWindow *window = wse->window.data()) {
if (window->screen() == wse->screen.data())
return;
QWindow *window = wse->window.data();
if (!window)
return;
if (QWindow *topLevelWindow = window->d_func()->topLevelWindow(QWindow::ExcludeTransients)) {
if (QScreen *screen = wse->screen.data())
topLevelWindow->d_func()->setTopLevelScreen(screen, false /* recreate */);
else // Fall back to default behavior, and try to find some appropriate screen
topLevelWindow->setScreen(nullptr);
}
if (window->screen() == wse->screen.data())
return;
// We may have changed scaling; trigger resize event if needed,
// except on Windows, where we send resize events during WM_DPICHANGED
// event handling. FIXME: unify DPI change handling across all platforms.
#ifndef Q_OS_WIN
if (window->handle()) {
QWindowSystemInterfacePrivate::GeometryChangeEvent gce(window, QHighDpi::fromNativePixels(window->handle()->geometry(), window));
processGeometryChangeEvent(&gce);
}
#endif
QWindowPrivate::get(window)->updateDevicePixelRatio();
if (QWindow *topLevelWindow = window->d_func()->topLevelWindow(QWindow::ExcludeTransients)) {
if (QScreen *screen = wse->screen.data())
topLevelWindow->d_func()->setTopLevelScreen(screen, false /* recreate */);
else // Fall back to default behavior, and try to find some appropriate screen
topLevelWindow->setScreen(nullptr);
}
// We may have changed scaling; trigger resize event if needed,
// except on Windows, where we send resize events during WM_DPICHANGED
// event handling. FIXME: unify DPI change handling across all platforms.
#ifndef Q_OS_WIN
if (window->handle()) {
QWindowSystemInterfacePrivate::GeometryChangeEvent gce(window, QHighDpi::fromNativePixels(window->handle()->geometry(), window));
processGeometryChangeEvent(&gce);
}
#endif
QWindowPrivate::get(window)->updateDevicePixelRatio();
}
void QGuiApplicationPrivate::processWindowDevicePixelRatioChangedEvent(QWindowSystemInterfacePrivate::WindowDevicePixelRatioChangedEvent *wde)