iOS Image manip refactoring

[nashyo]

I've written some code to ensure an image only pans when it has zoomed in (with a pinch gesture) and the image does not pan off screen when it has zoomed in.

Can anyone offer any advice about refactoring this?

i couldn't use the scroll view delegate methods as they were incompatible with my rotation gesture logic.

-(void)panGestureRecognized:(UIPanGestureRecognizer*)recognizer {
    
    if (recognizer.state == UIGestureRecognizerStateBegan || recognizer.state == UIGestureRecognizerStateChanged)
    {
        CGFloat currentScale = [[recognizer.view.layer valueForKeyPath:@"transform.scale"] floatValue];
        if (currentScale > 1.00) {
            
            CGPoint translation = [recognizer translationInView:recognizer.view.superview];
            CGPoint imageCenter = recognizer.view.center;
            
            CGPoint newCenter = CGPointMake(imageCenter.x + translation.x, imageCenter.y + translation.y);
            
            [recognizer.view setCenter:newCenter];
            [recognizer setTranslation:CGPointZero inView:recognizer.view.superview];
        }
    }
    
    if(recognizer.state == UIGestureRecognizerStateEnded)
    {
        CGFloat currentScale = [[recognizer.view.layer valueForKeyPath:@"transform.scale"] floatValue];
        if (currentScale > 1.00)
        {
            CGRect superViewFrame = recognizer.view.superview.layer.frame;
            CGRect imageViewFrame = recognizer.view.layer.frame;
            
            CGFloat offscreenContentX = (superViewFrame.size.width - imageViewFrame.size.width);
            CGFloat offscreenContentY = (superViewFrame.size.height - imageViewFrame.size.height);
            
            //Right
            if (imageViewFrame.origin.x >= 0) {
                //Down
                if (imageViewFrame.origin.y >= 0) {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(0, 0, imageViewFrame.size.width, imageViewFrame.size.height)];
                        //Up
                } else if (imageViewFrame.origin.y <= offscreenContentY) {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(0, offscreenContentY, imageViewFrame.size.width, imageViewFrame.size.height)];
                    //Neither
                } else {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(0, imageViewFrame.origin.y, imageViewFrame.size.width, imageViewFrame.size.height)];
                }
                //Left
            } else  if (imageViewFrame.origin.x <= offscreenContentX) {
                //Down
                if (imageViewFrame.origin.y >= 0) {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(offscreenContentX, 0, imageViewFrame.size.width, imageViewFrame.size.height)];
                } else if (imageViewFrame.origin.y <= offscreenContentY) {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(offscreenContentX, offscreenContentY, imageViewFrame.size.width, imageViewFrame.size.height)];
                } else {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(offscreenContentX, imageViewFrame.origin.y, imageViewFrame.size.width, imageViewFrame.size.height)];
                }
            } else {
                if (imageViewFrame.origin.y >= 0) {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(imageViewFrame.origin.x, 0, imageViewFrame.size.width, imageViewFrame.size.height)];
                } else if (imageViewFrame.origin.y <= offscreenContentY) {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(imageViewFrame.origin.x, offscreenContentY, imageViewFrame.size.width, imageViewFrame.size.height)];
                } else {
                    [self moveView:recognizer.view backOnScreenWithFrame:CGRectMake(imageViewFrame.origin.x, imageViewFrame.origin.y, imageViewFrame.size.width, imageViewFrame.size.height)];
                }
            }
        }
    }
}