ios-裁剪加裁剪描邊加把裁剪封裝成一個方法類

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////  UIImage+UItool.h//  圖片裁剪////  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//  圖片裁剪////  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//  圖片裁剪////  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.   //白色圓環版    _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

 

ios-裁剪加裁剪描邊加把裁剪封裝成一個方法類