[Author: altse]

Add GTMRoundedRectPath to draw rounded rectangles on iPhone.

R=thomasvl
DELTA=72  (72 added, 0 deleted, 0 changed)

2 files changed, 72 insertions, 0 deletions

diff --git a/iPhone/GTMRoundedRectPath.h b/iPhone/GTMRoundedRectPath.h
new file mode 100644
index 0000000..1bc8a08
--- /dev/null
+++ b/iPhone/GTMRoundedRectPath.h
@@ -0,0 +1,22 @@
+//
+//  GTMRoundedRectPath.h
+//
+//  Copyright 2010 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 <CoreGraphics/CoreGraphics.h>
+
+// Allocates a new rounded corner rectangle path.
+CGPathRef GTMCreateRoundedRectPath(CGRect rect, CGFloat radius);
diff --git a/iPhone/GTMRoundedRectPath.m b/iPhone/GTMRoundedRectPath.m
new file mode 100644
index 0000000..194f53e
--- /dev/null
+++ b/iPhone/GTMRoundedRectPath.m
@@ -0,0 +1,50 @@
+//
+//  GTMRoundedRectPath.m
+//
+//  Copyright 2010 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.
+//
+#include "GTMRoundedRectPath.h"
+
+CGPathRef GTMCreateRoundedRectPath(CGRect rect, CGFloat radius) {
+  CGMutablePathRef path = CGPathCreateMutable();
+
+  CGPoint topLeft = CGPointMake(CGRectGetMinX(rect), CGRectGetMinY(rect));
+  CGPoint topRight = CGPointMake(CGRectGetMaxX(rect), CGRectGetMinY(rect));
+  CGPoint bottomRight = CGPointMake(CGRectGetMaxX(rect), CGRectGetMaxY(rect));
+  CGPoint bottomLeft = CGPointMake(CGRectGetMinX(rect), CGRectGetMaxY(rect));
+
+  CGPathMoveToPoint(path, NULL, CGRectGetMidX(rect), CGRectGetMinY(rect));
+  CGPathAddArcToPoint(path, NULL,
+                      topLeft.x, topLeft.y,
+                      bottomLeft.x, bottomLeft.y,
+                      radius);
+  CGPathAddArcToPoint(path, NULL,
+                      bottomLeft.x, bottomLeft.y,
+                      bottomRight.x, bottomRight.y,
+                      radius);
+  CGPathAddArcToPoint(path, NULL,
+                      bottomRight.x, bottomRight.y,
+                      topRight.x, topRight.y,
+                      radius);
+  CGPathAddArcToPoint(path, NULL,
+                      topRight.x, topRight.y,
+                      topLeft.x, topLeft.y,
+                      radius);
+  CGPathCloseSubpath(path);
+
+  CGPathRef immutablePath = CGPathCreateCopy(path);
+  CGPathRelease(path);
+  return immutablePath;
+}