#import "ViewController.h"

@interface ViewController () <UIGestureRecognizerDelegate>

@property (weak, nonatomic) IBOutlet UIImageView *imageV;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.imageV.userInteractionEnabled = YES;
    // 1.創(chuàng)建手勢(shì)
    // 輕掃手勢(shì)
    //一個(gè)手勢(shì)對(duì)應(yīng)一個(gè)方向
    UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

    // 默認(rèn)軌掃的方向向右輕掃
    swipe.direction = UISwipeGestureRecognizerDirectionLeft |UISwipeGestureRecognizerDirectionRight;


    UISwipeGestureRecognizer *swipe2 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

    //默認(rèn)軌掃的方向向右輕掃
    swipe2.direction = UISwipeGestureRecognizerDirectionUp |UISwipeGestureRecognizerDirectionDown ;

    //2.添加手勢(shì)
    [self.imageV addGestureRecognizer:swipe];
    [self.imageV addGestureRecognizer:swipe2];

//    [self longPges];
//    [self tapGes];

}



// 輕掃手勢(shì)發(fā)生時(shí)調(diào)用
- (void)swipe:(UISwipeGestureRecognizer *)swipe {

//    NSLog(@"loveu");
}

//長(zhǎng)按手勢(shì)
- (void)longPges {
    //1.創(chuàng)建手勢(shì)
    UILongPressGestureRecognizer *longP = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longP:)];
    //2.添加手勢(shì)
    [self.imageV addGestureRecognizer:longP];

}

//當(dāng)長(zhǎng)按時(shí)調(diào)用,長(zhǎng)按方法,如果 移動(dòng)時(shí)會(huì)持續(xù)調(diào)用
- (void)longP: (UILongPressGestureRecognizer *)longP {

    if (longP.state == UIGestureRecognizerStateBegan) {
         NSLog(@"開(kāi)始長(zhǎng)按");
    } else if (longP.state == UIGestureRecognizerStateChanged) {
        NSLog(@"長(zhǎng)按時(shí)移動(dòng)");
    } else if (longP.state == UIGestureRecognizerStateEnded) {
        NSLog(@"手指離開(kāi)");
    }

}

// 點(diǎn)按手勢(shì)
- (void)tapGes {
    //1.創(chuàng)建手勢(shì)
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap)];
    tap.delegate = self;
    //2.添加手勢(shì)
    [self.imageV addGestureRecognizer:tap];
}
// 當(dāng)點(diǎn)擊ImageV時(shí)調(diào)用
- (void)tap {
    NSLog(@"%s",__func__);
}



// 是否允許接收手指.
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {

    //獲取當(dāng)前手指的點(diǎn)
    CGPoint curP = [touch locationInView:self.imageV];

    if (curP.x > self.imageV.bounds.size.width * 0.5) {
        //在右側(cè)
        return YES;
    }else {
        //在左側(cè)
        return NO;
    }

}

@end

#import "ViewController.h"

@interface ViewController ()<UIGestureRecognizerDelegate>
@property (weak, nonatomic) IBOutlet UIImageView *imageV;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.imageV.userInteractionEnabled = YES;
//    [self pincGes];

//    [self rotationGes];
    [self panGes];

}

// 是否允許支持多個(gè)手勢(shì)
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}


// 捏合手勢(shì)
- (void)pincGes {

    // 1.創(chuàng)建手勢(shì)
    UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];

    // 2.設(shè)置代理
    pinch.delegate = self;

    // 3.添加手勢(shì)
    [self.imageV addGestureRecognizer:pinch];

}



// 當(dāng)縮放時(shí)(捏合)會(huì)調(diào)用
- (void)pinch:(UIPinchGestureRecognizer *)pinch {

    self.imageV.transform = CGAffineTransformScale(self.imageV.transform, pinch.scale, pinch.scale);

    //復(fù)位
    [pinch setScale:1];
}


//旋轉(zhuǎn)手勢(shì)
- (void)rotationGes {

    //1.創(chuàng)建手勢(shì)
    UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];
    rotation.delegate = self;
    //2.添加手勢(shì)
    [self.imageV addGestureRecognizer:rotation];
}


// 當(dāng)旋轉(zhuǎn)時(shí)調(diào)用
- (void)rotation:(UIRotationGestureRecognizer *)rotation {

    self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, rotation.rotation);

    //復(fù)位
    [rotation setRotation:0];

}

// 拖動(dòng)手勢(shì)
- (void)panGes {
    //1.創(chuàng)建手勢(shì)
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
    //2.添加手勢(shì)
    [self.imageV addGestureRecognizer:pan];

}


// 當(dāng)拖動(dòng)時(shí)調(diào)用
- (void)pan:(UIPanGestureRecognizer *)pan {

    //NSLog(@"%s",__func__);
    //獲取偏移量(相對(duì)于最原始的值)
    CGPoint transP = [pan translationInView:pan.view];
    NSLog(@"===%@", [pan.view class]);

    NSLog(@"transP=%@",NSStringFromCGPoint(transP));

    self.imageV.transform = CGAffineTransformTranslate(self.imageV.transform, transP.x, transP.y);

    // 復(fù)位(相對(duì)于上一次的操作)
    [pan setTranslation:CGPointZero inView:pan.view];
}


@end