通过path绘制点击区域

通过path绘制点击区域

 

效果

 

源码

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