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Image caching stuff

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@5346 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
richard 1999-12-01 15:00:02 +00:00
parent 804630d3ae
commit 218c203684
2 changed files with 52 additions and 17 deletions
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16
ChangeLog
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@ -1,4 +1,16 @@
Wen Dec 1 11:55:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
Wed Dec 1 14:55:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
* Source/NSImage.m: Caching rewrite - using NSCachedImageRep - works
with xgps, but probably not xdps. There are two global variables to
control this -
1. NSImageDoesCaching
To turn caching on - when an image is drawn it is cached, if it is
redrawn with the same background color set (excluding transparent)
then the cached version is used.
2. NSImageForceCaching
To force the cache to be used irrespective of the background color.
Wed Dec 1 11:55:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
* Source/NSWindow.m: Removed spurious setNeedsDisplay when changing
the contentView of a window - it's up to the programmer to do that.
@ -6,7 +18,7 @@ Wen Dec 1 11:55:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
altering the view hierarchy - it's up to the programmer to do a
single call at the end of the work.
Wen Dec 1 8:27:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
Wed Dec 1 8:27:00 1999 Richard Frith-Macdonald <richard@brainstorm.co.uk>
Applied and modified/rewrote patch by Jonathan Gapen
* Headers/gnustep/gui/NSImage.h: Moved excess BOOL ivar to _flags.

53
Source/NSImage.m
View file

@ -51,7 +51,8 @@
#include <AppKit/NSScreen.h>
#include <AppKit/NSColor.h>
BOOL doesCaching = NO;
BOOL NSImageDoesCaching = NO; /* enable caching */
BOOL NSImageForceCaching = NO; /* use on missmatch */
// Resource directories
static NSString* gnustep_libdir = @GNUSTEP_INSTALL_LIBDIR;
@ -491,8 +492,7 @@ static Class cacheClass = 0;
{
GSRepData *repd = (GSRepData*)[_reps objectAtIndex: i];
if (repd->bg != nil
|| [repd->rep isKindOfClass: cacheClass] == NO)
if (repd->bg != nil || [repd->rep isKindOfClass: cacheClass] == NO)
{
valid = YES;
break;
@ -580,7 +580,7 @@ static Class cacheClass = 0;
repd = repd_for_rep(_reps, [self bestRepresentationForDevice: deviceDesc]);
rep = repd->rep;
if (doesCaching == YES)
if (NSImageDoesCaching == YES)
{
/*
* If this is not a cached image rep - create a cache to be used to
@ -800,7 +800,7 @@ static Class cacheClass = 0;
[NSException raise: NSInvalidArgumentException
format: @"Cannot lock focus on nil rep"];
if (doesCaching == YES)
if (NSImageDoesCaching == YES)
{
NSWindow *window;
@ -867,7 +867,7 @@ static Class cacheClass = 0;
- (NSImageRep*) cacheForRep: (NSImageRep*)rep
onDevice: (NSDictionary*)deviceDescription
{
if (doesCaching == YES)
if (NSImageDoesCaching == YES)
{
NSImageRep *cacheRep = nil;
unsigned count = [_reps count];
@ -875,6 +875,7 @@ static Class cacheClass = 0;
if (count > 0)
{
GSRepData *invalidCache = nil;
GSRepData *partialCache = nil;
GSRepData *validCache = nil;
GSRepData *reps[count];
unsigned i;
@ -902,24 +903,46 @@ static Class cacheClass = 0;
validCache = repd;
break;
}
else
{
partialCache = repd;
}
}
}
if (validCache != nil)
{
/*
* If the image rep has transparencey and we are drawing
* without a background (background is clear) 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 isEqual: clearColor])
if (NSImageForceCaching == NO)
{
DESTROY(validCache->bg);
/*
* If the image rep has transparencey and we are drawing
* without a background (background is clear) 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 isEqual: clearColor])
{
DESTROY(validCache->bg);
}
}
cacheRep = validCache->rep;
}
else if (partialCache != nil)
{
if (NSImageForceCaching == NO)
{
if (invalidCache != nil)
{
partialCache = invalidCache;
}
else
{
DESTROY(validCache->bg);
}
}
cacheRep = partialCache->rep;
}
else if (invalidCache != nil)
{
cacheRep = invalidCache->rep;