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Cocoa: Send obscure events on OcclusionStateHidden

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This disables animations for windows that are
completely obscured by other windows.

On examples/quick/animation, obscured CPU usage goes
from 10% to 1%.

Change-Id: I9945431e6387e406e2064c08d5aa01d5d96ef602
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
This commit is contained in:
Morten Johan Sørvig 2014-10-09 20:13:40 +02:00 committed by Laszlo Agocs
parent ebc835c2aa
commit f5cf06f4af
1 changed files with 2 additions and 4 deletions
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6
src/plugins/platforms/cocoa/qnsview.mm
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@ -420,12 +420,10 @@ static NSString *_q_NSWindowDidChangeOcclusionStateNotification = nil;
#pragma clang diagnostic ignored "-Wobjc-method-access"
enum { NSWindowOcclusionStateVisible = 1UL << 1 };
#endif
// Older versions managed in -[QNSView viewDidMoveToWindow].
// Support QWidgetAction in NSMenu. Mavericks only sends this notification.
// Ideally we should support this in Qt as well, in order to disable animations
// when the window is occluded.
if ((NSUInteger)[self.window occlusionState] & NSWindowOcclusionStateVisible)
m_platformWindow->exposeWindow();
else
m_platformWindow->obscureWindow();
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9
#pragma clang diagnostic pop
#endif