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Lighting/Class/tools/ImageCropperView.m

@@ -44,29 +44,71 @@
     self.backgroundColor = [UIColor clearColor];
     [self setUserInteractionEnabled:YES];
     [self setMultipleTouchEnabled:YES];
-   
-//    旋转
-    UIRotationGestureRecognizer *rotateGes = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateImage:)];
-    [self addGestureRecognizer:rotateGes];
+    // 旋转手势
+    UIRotationGestureRecognizer *rotationGestureRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateView:)];
+    [self addGestureRecognizer:rotationGestureRecognizer];
+    
+    // 缩放手势
+    UIPinchGestureRecognizer *pinchGestureRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchView:)];
+    [self addGestureRecognizer:pinchGestureRecognizer];
     
-//   放大缩小
-    UIPinchGestureRecognizer *scaleGes = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scaleImage:)];
-    [self addGestureRecognizer:scaleGes];
+    // 移动手势
+    UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panView:)];
+        [panGestureRecognizer setMinimumNumberOfTouches:1];
+        [panGestureRecognizer setMaximumNumberOfTouches:1];
+    [self addGestureRecognizer:panGestureRecognizer];
+////    旋转
+//    UIRotationGestureRecognizer *rotateGes = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateImage:)];
+//    [self addGestureRecognizer:rotateGes];
+//    
+////   放大缩小
+//    UIPinchGestureRecognizer *scaleGes = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scaleImage:)];
+//    [self addGestureRecognizer:scaleGes];
+//
+//
+////    移动
+//    UIPanGestureRecognizer *moveGes = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveImage:)];
+//    [moveGes setMinimumNumberOfTouches:1];
+//    [moveGes setMaximumNumberOfTouches:1];
+//    [self addGestureRecognizer:moveGes];
 //   长按
     UILongPressGestureRecognizer *longPressGR =
     [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress2:)];
     longPressGR.allowableMovement=NO;
     longPressGR.minimumPressDuration = 0.5;
     [self addGestureRecognizer:longPressGR];
-
-//    移动
-    UIPanGestureRecognizer *moveGes = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(moveImage:)];
-    [moveGes setMinimumNumberOfTouches:1];
-    [moveGes setMaximumNumberOfTouches:1];
-    [self addGestureRecognizer:moveGes];
    
 }
+// 处理旋转手势
+- (void) rotateView:(UIRotationGestureRecognizer *)rotationGestureRecognizer
+{
+    UIView *view = rotationGestureRecognizer.view;
+    if (rotationGestureRecognizer.state == UIGestureRecognizerStateBegan || rotationGestureRecognizer.state == UIGestureRecognizerStateChanged) {
+        view.transform = CGAffineTransformRotate(view.transform, rotationGestureRecognizer.rotation);
+        [rotationGestureRecognizer setRotation:0];
+    }
+}
 
+// 处理缩放手势
+- (void) pinchView:(UIPinchGestureRecognizer *)pinchGestureRecognizer
+{
+    UIView *view = pinchGestureRecognizer.view;
+    if (pinchGestureRecognizer.state == UIGestureRecognizerStateBegan || pinchGestureRecognizer.state == UIGestureRecognizerStateChanged) {
+        view.transform = CGAffineTransformScale(view.transform, pinchGestureRecognizer.scale, pinchGestureRecognizer.scale);
+        pinchGestureRecognizer.scale = 1;
+    }
+}
+
+// 处理拖拉手势
+- (void) panView:(UIPanGestureRecognizer *)panGestureRecognizer
+{
+    UIView *view = panGestureRecognizer.view;
+    if (panGestureRecognizer.state == UIGestureRecognizerStateBegan || panGestureRecognizer.state == UIGestureRecognizerStateChanged) {
+        CGPoint translation = [panGestureRecognizer translationInView:view.superview];
+        [view setCenter:(CGPoint){view.center.x + translation.x, view.center.y + translation.y}];
+        [panGestureRecognizer setTranslation:CGPointZero inView:view.superview];
+    }
+}
 
 float _lastTransX = 0.0, _lastTransY = 0.0;
 - (void)moveImage:(UIPanGestureRecognizer *)sender