From f9442133c503ade4df851a798e64b4fd9cb5544f Mon Sep 17 00:00:00 2001
From: fredkiefer <fredkiefer@72102866-910b-0410-8b05-ffd578937521>
Date: Fri, 8 Feb 2008 22:43:13 +0000
Subject: [PATCH] Allow the handling of pre-multiplied bitmaps.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@26044 72102866-910b-0410-8b05-ffd578937521
---
 ChangeLog               |  5 +++++
 Source/art/ARTContext.m | 11 +++++++++++
 2 files changed, 16 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 0fd6d39..57e4375 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-02-08 Fred Kiefer <FredKiefer@gmx.de>
+
+        * Source/art/ARTContext.m (-GSDrawImage:): Hack to allow the
+	handling of pre-multiplied bitmaps.
+
 2008-01-31 Fred Kiefer <FredKiefer@gmx.de>
 
 	* Tools/win32pbs.m: Use event polling code from WIN32Server.m.
diff --git a/Source/art/ARTContext.m b/Source/art/ARTContext.m
index 6338a9c..7a5b4c8 100644
--- a/Source/art/ARTContext.m
+++ b/Source/art/ARTContext.m
@@ -179,3 +179,14 @@ static int byte_order(void)
   [(ARTGState *)gstate GSCurrentDevice: device : x : y];
 }
 @end
+
+@implementation ARTContext (Ops)
+
+- (void) GSDrawImage: (NSRect) rect: (void *) imageref
+{
+  // Hack until Art is able to handle premultiplied images
+  [imageref _unpremultiply];
+  [super GSDrawImage: rect : imageref];
+}
+
+@end