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Laurent Sansonetti
2012-04-10 20:39:46 +02:00
parent e095882faf
commit 39067499fe
1 changed files with 16 additions and 16 deletions
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32
sample/trollify/app/image_composition_controller.rb
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@@ -8,16 +8,16 @@ class ImageCompositionController < UIViewController
view.addSubview(troll_image_view)
rotationGesture = UIRotationGestureRecognizer.alloc.initWithTarget(self, action: 'rotate_image:')
@troll_image_view.addGestureRecognizer(rotationGesture)
troll_image_view.addGestureRecognizer(rotationGesture)
panGesture = UIPanGestureRecognizer.alloc.initWithTarget(self, action: 'pan_image:')
panGesture.maximumNumberOfTouches = 2
panGesture.delegate = self
@troll_image_view.addGestureRecognizer(panGesture)
troll_image_view.addGestureRecognizer(panGesture)
pinchGesture = UIPinchGestureRecognizer.alloc.initWithTarget(self, action:'scale_image:')
pinchGesture.delegate = self
@troll_image_view.addGestureRecognizer(pinchGesture)
troll_image_view.addGestureRecognizer(pinchGesture)
navigationItem.leftBarButtonItem = UIBarButtonItem.alloc.initWithTitle("Pick", style:UIBarButtonItemStylePlain, target:self, action:'show_source_sheet')
navigationItem.rightBarButtonItem = UIBarButtonItem.alloc.initWithTitle("Save", style:UIBarButtonItemStylePlain, target:self, action:'save_image')
@@ -73,7 +73,7 @@ class ImageCompositionController < UIViewController
def scale_image(gestureRecognizer)
adjust_anchor_point_for_gesture_recognizer(gestureRecognizer)
if gestureRecognizer.state == UIGestureRecognizerStateBegan || gestureRecognizer.state == UIGestureRecognizerStateChanged
gestureRecognizer.view.transform = CGAffineTransformScale(gestureRecognizer.view.transform, gestureRecognizer.scale, gestureRecognizer.scale);
gestureRecognizer.view.transform = CGAffineTransformScale(gestureRecognizer.view.transform, gestureRecognizer.scale, gestureRecognizer.scale)
gestureRecognizer.scale = 1
end
end
@@ -137,31 +137,31 @@ class ImageCompositionController < UIViewController
def save_image
image = view.image
troll_image_transform = @troll_image_view.transform;
trollfaceRotation = Math.atan2(troll_image_transform.b, troll_image_transform.a);
trollfaceScaleX = Math.sqrt(troll_image_transform.a**2 + troll_image_transform.c**2);
trollfaceScaleY = Math.sqrt(troll_image_transform.b**2 + troll_image_transform.d**2);
troll_image_transform = troll_image_view.transform
trollfaceRotation = Math.atan2(troll_image_transform.b, troll_image_transform.a)
trollfaceScaleX = Math.sqrt(troll_image_transform.a**2 + troll_image_transform.c**2)
trollfaceScaleY = Math.sqrt(troll_image_transform.b**2 + troll_image_transform.d**2)
# We are displaying the image in AspectFill mode. This will give us the scale.
scale = [image.size.width/view.frame.size.width, image.size.height/view.frame.size.height].min
targetWidth = image.size.width;
targetHeight = image.size.height;
targetWidth = image.size.width
targetHeight = image.size.height
# Image Rect and Image Context in the size of the image.
imageRect = CGRectMake(0, 0, image.size.width, image.size.height);
imageRect = CGRectMake(0, 0, image.size.width, image.size.height)
UIGraphicsBeginImageContextWithOptions(CGSizeMake(targetWidth, targetHeight), true, UIScreen.mainScreen.scale);
c = UIGraphicsGetCurrentContext();
UIGraphicsBeginImageContextWithOptions(CGSizeMake(targetWidth, targetHeight), true, UIScreen.mainScreen.scale)
c = UIGraphicsGetCurrentContext()
image.drawInRect(imageRect)
# Potential landscape rotation.
CGContextSaveGState(c)
# Get the (possibly rotated) image.
trollface_image = @troll_image_view.image
trollface_image = troll_image_view.image
if trollfaceRotation != 0
trollface_image = @troll_image_view.image.imageRotatedByRadians(trollfaceRotation)
trollface_image = troll_image_view.image.imageRotatedByRadians(trollfaceRotation)
end
# Move the context down and left (or either or) to match where the trollface view was on the screen
@@ -170,7 +170,7 @@ class ImageCompositionController < UIViewController
CGContextScaleCTM(c, scale, scale)
# Draw the trollface image, correctly scaled.
trollface_image.drawInRect(CGRectMake(@troll_image_view.frame.origin.x, @troll_image_view.frame.origin.y, trollface_image.size.width * trollfaceScaleX, trollface_image.size.height * trollfaceScaleY))
trollface_image.drawInRect(CGRectMake(troll_image_view.frame.origin.x, troll_image_view.frame.origin.y, trollface_image.size.width * trollfaceScaleX, trollface_image.size.height * trollfaceScaleY))
CGContextRestoreGState(c)