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macOS: Merge [QCocoaApplicationDelegate canQuit] into callsite

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The logic for handling termination without any event loops has been
moved up as an early exit, and the code has been modernized.

Change-Id: I202720b9923e35732cffea656e1ce108ef11953d
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
This commit is contained in:
Tor Arne Vestbø 2019-10-14 14:14:01 +02:00
parent ff2ba8b9d2
commit 2967510213
1 changed files with 24 additions and 30 deletions
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54
src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
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@ -140,44 +140,38 @@ QT_USE_NAMESPACE
return [[self.dockMenu retain] autorelease];
}
- (BOOL)canQuit
{
QCloseEvent ev;
QGuiApplication::sendEvent(qGuiApp, &ev);
return ev.isAccepted();
}
// This function will only be called when NSApp is actually running.
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
{
if ([reflectionDelegate respondsToSelector:_cmd])
return [reflectionDelegate applicationShouldTerminate:sender];
if ([self canQuit]) {
if (!startedQuit) {
startedQuit = true;
// Close open windows. This is done in order to deliver de-expose
// events while the event loop is still running.
const QWindowList topLevels = QGuiApplication::topLevelWindows();
for (int i = 0; i < topLevels.size(); ++i) {
QWindow *topLevelWindow = topLevels.at(i);
// Already closed windows will not have a platform window, skip those
if (topLevelWindow->handle())
QWindowSystemInterface::handleCloseEvent(topLevelWindow);
}
QWindowSystemInterface::flushWindowSystemEvents();
QGuiApplication::exit(0);
startedQuit = false;
}
if (QGuiApplicationPrivate::instance()->threadData->eventLoops.isEmpty()) {
// No event loop is executing. This probably means that Qt is used as a plugin,
// or as a part of a native Cocoa application. In any case it should be fine to
// terminate now.
return NSTerminateNow;
}
if (QGuiApplicationPrivate::instance()->threadData->eventLoops.isEmpty()) {
// INVARIANT: No event loop is executing. This probably
// means that Qt is used as a plugin, or as a part of a native
// Cocoa application. In any case it should be fine to
// terminate now:
return NSTerminateNow;
QCloseEvent ev;
QGuiApplication::sendEvent(qGuiApp, &ev);
if (!ev.isAccepted())
return NSTerminateCancel;
if (!startedQuit) {
startedQuit = true;
// Close open windows. This is done in order to deliver de-expose
// events while the event loop is still running.
for (QWindow *topLevelWindow : QGuiApplication::topLevelWindows()) {
// Already closed windows will not have a platform window, skip those
if (!topLevelWindow->handle())
continue;
QWindowSystemInterface::handleCloseEvent<QWindowSystemInterface::SynchronousDelivery>(topLevelWindow);
}
QGuiApplication::exit(0);
startedQuit = false;
}
return NSTerminateCancel;