不规则图片气泡蒙版的制作
}
/**
* 得到mask的图像
*
* @param BubbleImage 气泡原始图
* @param edge 拉伸角度
* @param maskframe 蒙版大小
*
* @return 返回蒙版图像
*/
-(UIImage *)getMaskImageWithBubbleImage:(UIImage *)BubbleImage EdgeInsets:(UIEdgeInsets)edgeInsets maskframe:(CGRect)maskframe
{
BubbleImage = [BubbleImage stretchableImageWithLeftCapWidth:edgeInsets.left topCapHeight:edgeInsets.top];// : [BubbleImage resizableImageWithCapInsets:edgeInsets resizingMode:UIImageResizingModeStretch])
UIGraphicsBeginImageContextWithOptions(maskframe.size, NO, 0);
[BubbleImage drawInRect:CGRectMake(0, 0, maskframe.size.width, maskframe.size.height)];
CGRect rect = CGRectMake(edgeInsets.left, 0, maskframe.size.width - 2 * edgeInsets.left, maskframe.size.height);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [[UIColor blackColor] CGColor]);
CGContextFillRect(context, rect);
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIImage * image3 = img ;
return image3;
}
