iboss-mini-ios/IBOSSmini/DKPhotoLib/KDPhotoBrowser/Views/DKPhotoPickerBrowserPhotoImageView.m

//
//  ZLPhotoPickerBrowserPhotoImageView.m
//  ZLAssetsPickerDemo
//
//

#import "DKPhotoPickerBrowserPhotoImageView.h"

@implementation DKPhotoPickerBrowserPhotoImageView

- (id)initWithFrame:(CGRect)frame {
	if ((self = [super initWithFrame:frame])) {
        self.userInteractionEnabled = YES;
        // 监听手势
        [self addGesture];
	}
	return self;
}

- (id)initWithImage:(UIImage *)image {
	if ((self = [super initWithImage:image])) {
        self.userInteractionEnabled = YES;
        // 监听手势
        [self addGesture];
	}
	return self;
}

- (id)initWithImage:(UIImage *)image highlightedImage:(UIImage *)highlightedImage {
	if ((self = [super initWithImage:image highlightedImage:highlightedImage])) {
        self.userInteractionEnabled = YES;
        // 监听手势
        [self addGesture];
	}
	return self;
}


#pragma mark -监听手势
- (void) addGesture{
    self.contentMode = UIViewContentModeScaleAspectFit;
    // 双击放大
    UITapGestureRecognizer *scaleBigTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
    scaleBigTap.numberOfTapsRequired = 2;
    scaleBigTap.numberOfTouchesRequired = 1;
    [self addGestureRecognizer:scaleBigTap];

    // 单击缩小
    UITapGestureRecognizer *disMissTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
    disMissTap.numberOfTapsRequired = 1;
    disMissTap.numberOfTouchesRequired = 1;
    [self addGestureRecognizer:disMissTap];
    // 只能有一个手势存在
    [disMissTap requireGestureRecognizerToFail:scaleBigTap];
}

- (void)handleSingleTap:(UITouch *)touch {
	if ([_tapDelegate respondsToSelector:@selector(imageView:singleTapDetected:)])
		[_tapDelegate imageView:self singleTapDetected:touch];
}

- (void)handleDoubleTap:(UITouch *)touch {
	if ([_tapDelegate respondsToSelector:@selector(imageView:doubleTapDetected:)])
		[_tapDelegate imageView:self doubleTapDetected:touch];
}

@end