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Fix garbage content when windows are initially mapped

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The garbage would be visible if any widget enabled the toplevel
NSView's CALayer in order to do custom native rendering.
This commit is contained in:
Kristian Rietveld 2012-09-28 06:50:13 +02:00 committed by Michael Natterer
parent 9b61330380
commit 92ea94af5f
1 changed files with 19 additions and 0 deletions
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19
gdk/quartz/GdkQuartzView.c
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@ -86,6 +86,25 @@
if (NSEqualRects (rect, NSZeroRect))
return;
if (!GDK_WINDOW_IS_MAPPED (gdk_window))
{
/* If the window is not yet mapped, clip_region_with_children
* will be empty causing the usual code below to draw nothing.
* To not see garbage on the screen, we draw an aesthetic color
* here. The garbage would be visible if any widget enabled
* the NSView's CALayer in order to add sublayers for custom
* native rendering.
*/
[NSGraphicsContext saveGraphicsState];
[[[self window] backgroundColor] setFill];
[NSBezierPath fillRect:rect];
[NSGraphicsContext restoreGraphicsState];
return;
}
/* Clear our own bookkeeping of regions that need display */
if (impl->needs_display_region)
{