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//
// 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;
}
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