diff options
| -rw-r--r-- | src/gui/kernel/qcocoaview_mac.mm | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm index 212684b..1039a75 100644 --- a/src/gui/kernel/qcocoaview_mac.mm +++ b/src/gui/kernel/qcocoaview_mac.mm @@ -555,6 +555,10 @@ extern "C" { - (void)updateTrackingAreas { + // [NSView addTrackingArea] is slow, so bail out early if we can: + if (NSIsEmptyRect([self visibleRect])) + return; + QMacCocoaAutoReleasePool pool; if (NSArray *trackingArray = [self trackingAreas]) { NSUInteger size = [trackingArray count]; |