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Caching/opacity fixes

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@5355 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 1999-12-02 06:08:39 +00:00
parent 718b2fd063
commit 91169ffc3c
2 changed files with 27 additions and 6 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Thu Dec 2 6:07:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
* Source/NSImage.m: Use opacity values from image reps to cache more
intelligently, and set the opacity of caches correctly.
Thu Dec 2 01:28:34 1999 Nicola Pero <n.pero@mi.flashnet.it>
* Headers/AppKit/NSTableHeaderView.h: Added copyright.

28
Source/NSImage.m
View file

@ -514,6 +514,7 @@ static Class cacheClass = 0;
if (repd->bg != nil)
{
DESTROY(repd->bg);
[repd->rep setOpaque: YES];
}
}
}
@ -603,7 +604,7 @@ static Class cacheClass = 0;
[self lockFocusOnRepresentation: rep];
bounds = [_lockedView bounds];
if (_color != nil && [_color isEqual: clearColor] == NO)
if (_color != nil && [_color alphaComponent] != 0.0)
{
[_color set];
NSEraseRect(bounds);
@ -612,6 +613,14 @@ static Class cacheClass = 0;
inRect: NSMakeRect(0, 0, _size.width, _size.height)];
[self unlockFocus];
repd->bg = _color ? [_color copy] : [clearColor copy];
if ([repd->bg alphaComponent] == 1.0)
{
[rep setOpaque: YES];
}
else
{
[rep setOpaque: [repd->original isOpaque]];
}
}
}
@ -917,33 +926,40 @@ static Class cacheClass = 0;
if (validCache != nil)
{
if (NSImageForceCaching == NO)
if (NSImageForceCaching == NO && [rep isOpaque] == NO)
{
/*
* If the image rep has transparencey and we are drawing
* If the image rep is not opaque and we are drawing
* without an opaque background then the cache can't
* really be valid 'cos we might be drawing transparency
* on top of anything. So we invalidate the cache by
* removing the background color information.
*/
if ([rep hasAlpha] && [validCache->bg alphaComponent] != 1.0)
if ([validCache->bg alphaComponent] != 1.0)
{
DESTROY(validCache->bg);
[validCache->rep setOpaque: YES];
}
}
cacheRep = validCache->rep;
}
else if (partialCache != nil)
{
if (NSImageForceCaching == NO)
if (NSImageForceCaching == NO && [rep isOpaque] == NO)
{
if (invalidCache != nil)
{
/*
* If there is an unused cache - use it rather than
* re-using this one, since we might get a request
* to draw with this color again.
*/
partialCache = invalidCache;
}
else
{
DESTROY(validCache->bg);
DESTROY(partialCache->bg);
[partialCache->rep setOpaque: YES];
}
}
cacheRep = partialCache->rep;