Add gradient methods on graphics context.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@28872 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,11 @@
+2009-10-23 Fred Kiefer <FredKiefer@gmx.de>
+
+	* Headers/AppKit/NSGraphicsContext.h,
+	* Source/NSGraphicsContext.m: Define empty gradient methods.
+	* Source/NSGradient.m: Use these methods.
+	* Source/NSColor.m (-colorUsingColorSpace): Don't use isEqual: on
+	color space.
+
 2009-10-23 Fred Kiefer <FredKiefer@gmx.de>
 
 	* Source/NSGradient.m: Add context savig/restore and first attempt

Headers/AppKit/NSGraphicsContext.h

@@ -48,6 +48,7 @@
 @class NSFont;
 @class NSSet;
 @class NSBitmapImageRep;
+@class NSGradient;
 
 /*
  * Backing Store Types
@@ -505,6 +506,21 @@ transform between current user space and image space for this image.</desc>
 
 @end
 
+@interface NSGraphicsContext (NSGradient)
+- (void) drawGradient: (NSGradient*)gradient
+           fromCenter: (NSPoint)startCenter
+               radius: (CGFloat)startRadius
+             toCenter: (NSPoint)endCenter 
+               radius: (CGFloat)endRadius
+              options: (NSUInteger)options;
+
+- (void) drawGradient: (NSGradient*)gradient
+            fromPoint: (NSPoint)startPoint
+              toPoint: (NSPoint)endPoint
+              options: (NSUInteger)options;
+
+@end
+
 /* NSGraphicContext constants */
 APPKIT_EXPORT NSString *NSGraphicsContextDestinationAttributeName;
 APPKIT_EXPORT NSString *NSGraphicsContextPDFFormat;

Source/NSColor.m

@@ -1218,7 +1218,7 @@ systemColorWithName(NSString *name)
   // FIXME
   NSString *colorSpaceName;
 
-  if ([space isEqualTo: [self colorSpace]])
+  if (space == [self colorSpace])
     {
       return self;
     }

Source/NSGradient.m

@@ -55,14 +55,22 @@
                  radius: (CGFloat)endRadius
                 options: (NSGradientDrawingOptions)options
 {
-  // FIXME: New backend call
+  [[NSGraphicsContext currentContext] drawGradient: self
+                                      fromCenter: startCenter
+                                      radius: startRadius
+                                      toCenter: endCenter 
+                                      radius: endRadius
+                                      options: options];
 }
 
 - (void) drawFromPoint: (NSPoint)startPoint
                toPoint: (NSPoint)endPoint
                options: (NSGradientDrawingOptions)options
 {
-  // FIXME: New backend call
+  [[NSGraphicsContext currentContext] drawGradient: self
+                                      fromPoint: startPoint
+                                      toPoint: endPoint
+                                      options: options];
 }
 
 - (void) drawInBezierPath: (NSBezierPath *)path angle: (CGFloat)angle
@@ -197,7 +205,7 @@ relativeCenterPosition: (NSPoint)relativeCenterPoint
 {
   return [self initWithColors: colorArray 
                atLocations: NULL
-               colorSpace: null];
+               colorSpace: nil];
 }
 
 - (id) initWithColors: (NSArray *)colorArray
@@ -208,7 +216,7 @@ relativeCenterPosition: (NSPoint)relativeCenterPoint
     {
       _numberOfColorStops = [colorArray count];
       NSAssert(_numberOfColorStops >= 2, @"NSGradient needs at least 2 locations");
-      if (colorSpace == null)
+      if (colorSpace == nil)
         {
           colorSpace = [[colorArray objectAtIndex: 0] colorSpace];
         }
@@ -261,7 +269,7 @@ relativeCenterPosition: (NSPoint)relativeCenterPoint
 
   self = [self initWithColors: colorArray
                atLocations: locations
-               colorSpace: null];
+               colorSpace: nil];
 
   RELEASE(colorArray);
   objc_free(locations);

Source/NSGraphicsContext.m

@@ -1780,3 +1780,24 @@ NSGraphicsContext	*GSCurrentContext(void)
 }
 
 @end
+
+@implementation NSGraphicsContext (NSGradient)
+- (void) drawGradient: (NSGradient*)gradient
+           fromCenter: (NSPoint)startCenter
+               radius: (CGFloat)startRadius
+             toCenter: (NSPoint)endCenter 
+               radius: (CGFloat)endRadius
+              options: (NSUInteger)options
+{
+  [self subclassResponsibility: _cmd];
+}
+
+- (void) drawGradient: (NSGradient*)gradient
+            fromPoint: (NSPoint)startPoint
+              toPoint: (NSPoint)endPoint
+              options: (NSUInteger)options
+{
+  [self subclassResponsibility: _cmd];
+}
+
+@end