通過path繪制點擊區域

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效果

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源碼

https://github.com/YouXianMing/Animations

// // TapDrawImageView.h // TapDrawImageView // // Created by YouXianMing on 16/5/9. // Copyright ? 2016年 YouXianMing. All rights reserved. // #import <UIKit/UIKit.h> #import "TapDrawPathManager.h" @class TapDrawImageView;static NSString *tapDrawImageViewNormalState = @"normalState"; static NSString *tapDrawImageViewHighlightState = @"highlightState"; static NSString *tapDrawImageDisableState = @"disableState";@protocol TapDrawImageViewDelegate <NSObject>- (void)tapDrawImageView:(TapDrawImageView *)tapImageView selectedPathManager:(TapDrawPathManager *)pathManager;@end@interface TapDrawImageView : UIView@property (nonatomic, weak) id <TapDrawImageViewDelegate> delegate;@property (nonatomic, strong) NSMutableArray <TapDrawPathManager *> *pathManagers;@end // // TapDrawImageView.m // TapDrawImageView // // Created by YouXianMing on 16/5/9. // Copyright ? 2016年 YouXianMing. All rights reserved. // #import "TapDrawImageView.h"@interface TapDrawImageView ()@property (nonatomic, strong) TapDrawPathManager *currentSelectedManager; @property (nonatomic, strong) UIImageView *imageView;@end@implementation TapDrawImageView- (instancetype)initWithFrame:(CGRect)frame {if (self = [super initWithFrame:frame]) {self.pathManagers = [NSMutableArray array];self.backgroundColor = [UIColor clearColor];}return self; }- (void)drawRect:(CGRect)rect {CGContextRef context = UIGraphicsGetCurrentContext();[self.pathManagers enumerateObjectsUsingBlock:^(TapDrawPathManager *pathManager, NSUInteger idx, BOOL *stop) {TapDrawObject *drawObject = [pathManager.colorsType objectForKey:pathManager.currentDrawType];// Set Fill Color. {CGFloat red = 0;CGFloat green = 0;CGFloat blue = 0;CGFloat alpha = 0;[drawObject.fillColor getRed:&red green:&green blue:&blue alpha:&alpha];CGContextSetRGBFillColor(context, red, green, blue, alpha);}// Set Stroke Color. {CGFloat red = 0;CGFloat green = 0;CGFloat blue = 0;CGFloat alpha = 0;[drawObject.strokeColor getRed:&red green:&green blue:&blue alpha:&alpha];CGContextSetRGBStrokeColor(context, red, green, blue, alpha);}pathManager.path.lineWidth = drawObject.lineWidth;[pathManager.path fill];[pathManager.path stroke];}]; }- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {UITouch *touch = [touches anyObject];CGPoint touchPoint = [touch locationInView:self];[self.pathManagers enumerateObjectsUsingBlock:^(TapDrawPathManager *pathManager, NSUInteger idx, BOOL *stop) {if ([pathManager.path containsPoint:touchPoint]) {if (self.delegate && [self.delegate respondsToSelector:@selector(tapDrawImageView:selectedPathManager:)]) {[self.delegate tapDrawImageView:self selectedPathManager:pathManager];}if ([pathManager.currentDrawType isEqualToString:tapDrawImageDisableState] == NO) {pathManager.currentDrawType = tapDrawImageViewHighlightState;_currentSelectedManager = pathManager;[self setNeedsDisplay];}*stop = YES;}}]; }- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event {if (_currentSelectedManager) {_currentSelectedManager.currentDrawType = tapDrawImageViewNormalState;[self setNeedsDisplay];}_currentSelectedManager = nil; }- (void)touchesCancelled:(nullable NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event {if (_currentSelectedManager) {_currentSelectedManager.currentDrawType = tapDrawImageViewNormalState;[self setNeedsDisplay];}_currentSelectedManager = nil; }@end

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轉載于:https://www.cnblogs.com/YouXianMing/p/5618626.html

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