ios-裁剪加裁剪描边加把裁剪封装成一个方法类
// // UIImage+UItool.h // 图片裁剪 // // Created by YaguangZhu on 15/9/10. // Copyright (c) 2015年 YaguangZhu. All rights reserved. // #import <UIKit/UIKit.h> @interface UIImage (UItool) + (instancetype)imageWithName:(NSString *)name border:(CGFloat)border borderColor:(UIColor *)color; @end // // UIImage+UItool.m // 图片裁剪 // // Created by YaguangZhu on 15/9/10. // Copyright (c) 2015年 YaguangZhu. All rights reserved. // #import "UIImage+UItool.h" @implementation UIImage (UItool) + (instancetype)imageWithName:(NSString *)name border:(CGFloat)border borderColor:(UIColor *)color { CGFloat borderW = border; UIImage *oldImage = [UIImage imageNamed:name]; CGFloat imageW = oldImage.size.width + 2 * borderW; CGFloat imageH = oldImage.size.height+ 2 * borderW; CGFloat circirW = imageW > imageH ? imageH :imageW; UIGraphicsBeginImageContextWithOptions(CGSizeMake(circirW, circirW), NO, 0.0); UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(0, 0, circirW, circirW)]; CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextAddPath(ctx, path.CGPath); [color set]; CGContextFillPath(ctx); CGRect clipR = CGRectMake(borderW, borderW, oldImage.size.width, oldImage.size.height); UIBezierPath *clipPath = [UIBezierPath bezierPathWithOvalInRect:clipR]; [clipPath addClip]; [oldImage drawAtPoint:CGPointMake(borderW, borderW)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } @end
// // ViewController.m // 图片裁剪 // // Created by YaguangZhu on 15/9/10. // Copyright (c) 2015年 YaguangZhu. All rights reserved. // #import "ViewController.h" #import "UIImage+UItool.h" @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *ImageView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //白色圆环版 _ImageView.image = [UIImage imageWithName:@"001" border:10 borderColor:[UIColor redColor]]; } - (void)clipCrile { CGFloat borderW = 5; UIImage *oldImage = [UIImage imageNamed:@"001"]; CGFloat imageW = oldImage.size.width + 2 * borderW; CGFloat imageH = oldImage.size.height+ 2 * borderW; CGFloat circirW = imageW > imageH ? imageH :imageW; UIGraphicsBeginImageContextWithOptions(CGSizeMake(circirW, circirW), NO, 0.0); UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(0, 0, circirW, circirW)]; CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextAddPath(ctx, path.CGPath); [[UIColor whiteColor]set]; CGContextFillPath(ctx); CGRect clipR = CGRectMake(borderW, borderW, oldImage.size.width, oldImage.size.height); UIBezierPath *clipPath = [UIBezierPath bezierPathWithOvalInRect:clipR]; [clipPath addClip]; [oldImage drawAtPoint:CGPointMake(borderW, borderW)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); _ImageView.image = newImage; } - (void)clip { UIImage *oldImage = [UIImage imageNamed:@"001"]; UIGraphicsBeginImageContextWithOptions(oldImage.size, NO, 0.0); UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(0, 0, oldImage.size.width, oldImage.size.height)]; [path addClip]; [oldImage drawAtPoint:CGPointZero]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); _ImageView.image = newImage; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end