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Make -setNeedsDisplay* safe to use from performers.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@16381 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Alexander Malmberg 2003-04-06 18:03:33 +00:00
parent c6beeb60ec
commit 83f252e89a
2 changed files with 32 additions and 19 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2003-04-06 19:56 Alexander Malmberg <alexander@malmberg.org>
* Source/NSWindow.m: Make sure -_handleWindowNeedsDisplay: is run
on every runloop iteration so -setNeedsDisplay* can be used safely
from methods invoked by -performSelector:target:argument:order:modes:.
2003-04-06 15:10 Alexander Malmberg <alexander@malmberg.org>
* Source/GSLayoutManager.m (-_generateGlyphsUpToCharacter:): Make

45
Source/NSWindow.m
View file

@ -94,12 +94,37 @@ BOOL GSViewAcceptsDrag(NSView *v, id<NSDraggingInfo> dragInfo);
@end
@implementation NSWindow (GNUstepPrivate)
/*
This method handles all normal displaying. It is set to be run on each
runloop iteration for each window that's on-screen. The performer is
added then the window is ordered in and re-added each time it is run.
If the window is ordered out, the performer is cancelled.
The reason why this performer is always added, as opposed to adding it
when display is needed and not re-adding it here, is that
-setNeedsDisplay* might be called from a method invoked by
-performSelector:target:argument:order:modes:, and if it is, the display
needs to happen in the same runloop iteration, before blocking for
events. If the performer were added in a call to another performer, it
wouldn't be called until the next runloop iteration, ie. after the runloop
has blocked and waited for events.
*/
- (void) _handleWindowNeedsDisplay: (id)bogus
{
if (_f.is_autodisplay && _rFlags.needs_display)
{
[self displayIfNeeded];
}
[[NSRunLoop currentRunLoop]
performSelector: @selector(_handleWindowNeedsDisplay:)
target: self
argument: nil
order: 600000
modes: [NSArray arrayWithObjects:
NSDefaultRunLoopMode,
NSModalPanelRunLoopMode,
NSEventTrackingRunLoopMode, nil]];
}
/* We get here if we were ordered out or miniaturized. In this case if
@ -1921,26 +1946,8 @@ static NSNotificationCenter *nc = nil;
_rFlags.needs_display = flag;
if (flag)
{
/* TODO: this call most likely shouldn't be here */
[NSApp setWindowsNeedUpdate: YES];
if (_f.visible && _f.has_opened)
{
[[NSRunLoop currentRunLoop]
performSelector: @selector(_handleWindowNeedsDisplay:)
target: self
argument: nil
order: 600000 /*NSDisplayWindowRunLoopOrdering OS*/
modes: [NSArray arrayWithObjects:
NSDefaultRunLoopMode,
NSModalPanelRunLoopMode,
NSEventTrackingRunLoopMode, nil]];
}
}
else
{
[[NSRunLoop currentRunLoop]
cancelPerformSelector: @selector(_handleWindowNeedsDisplay:)
target: self
argument: nil];
}
}
}