initial drop of a few sources to start things out

1 files changed, 68 insertions, 0 deletions

diff --git a/AppKit/GTMNSBezierPath+CGPath.m b/AppKit/GTMNSBezierPath+CGPath.m
new file mode 100644
index 0000000..97464fc
--- /dev/null
+++ b/AppKit/GTMNSBezierPath+CGPath.m
@@ -0,0 +1,68 @@
+//
+//  GTMNSBezierPath+CGPath.h
+//
+//  Category for extracting a CGPathRef from a NSBezierPath
+//
+//  Copyright 2006-2008 Google Inc.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+//  use this file except in compliance with the License.  You may obtain a copy
+//  of the License at
+// 
+//  http://www.apache.org/licenses/LICENSE-2.0
+// 
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+//  License for the specific language governing permissions and limitations under
+//  the License.
+//
+#import "GTMNSBezierPath+CGPath.h"
+
+@implementation NSBezierPath (GTMBezierPathCGPathAdditions)
+
+//  Extract a CGPathRef from a NSBezierPath.
+//
+//  Args: 
+//
+//  Returns:
+//    Converted CGPathRef. Must be released by client (CGPathRelease).
+//    nil if failure.
+- (CGPathRef)gtm_createCGPath {
+  CGMutablePathRef thePath = CGPathCreateMutable();
+  if (!thePath) return nil;
+  
+  unsigned int elementCount = [self elementCount];
+  
+  // The maximum number of points is 3 for a NSCurveToBezierPathElement.
+  // (controlPoint1, controlPoint2, and endPoint)
+  NSPoint controlPoints[3];
+  
+  for (unsigned int i = 0; i < elementCount; i++) {
+    switch ([self elementAtIndex:i associatedPoints:controlPoints]) {
+      case NSMoveToBezierPathElement:
+        CGPathMoveToPoint(thePath, &CGAffineTransformIdentity, 
+                              controlPoints[0].x, controlPoints[0].y);
+        break;
+      case NSLineToBezierPathElement:
+        CGPathAddLineToPoint(thePath, &CGAffineTransformIdentity, 
+                              controlPoints[0].x, controlPoints[0].y);
+        break;
+      case NSCurveToBezierPathElement:
+        CGPathAddCurveToPoint(thePath, &CGAffineTransformIdentity, 
+                              controlPoints[0].x, controlPoints[0].y,
+                              controlPoints[1].x, controlPoints[1].y,
+                              controlPoints[2].x, controlPoints[2].y);
+        break;
+      case NSClosePathBezierPathElement:
+        CGPathCloseSubpath(thePath);
+        break;
+      default:
+        NSLog(@"Unknown element at [NSBezierPath (GTMBezierPathCGPathAdditions) cgPath]");
+        break;
+    };
+  }
+  return thePath;
+}
+
+@end