1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_COCOA_ANIMATABLE_IMAGE_H_ 6 #define CHROME_BROWSER_UI_COCOA_ANIMATABLE_IMAGE_H_ 7 8 #import <Cocoa/Cocoa.h> 9 #import <QuartzCore/QuartzCore.h> 10 11 #include "base/mac/scoped_nsobject.h" 12 13 // This class helps animate an NSImage's frame and opacity. It works by creating 14 // a blank NSWindow in the size specified and giving it a layer on which the 15 // image can be animated. Clients are free to embed this object as a child 16 // window for easier window management. This class will clean itself up when 17 // the animation has finished. Clients that install this as a child window 18 // should listen for the NSWindowWillCloseNotification to perform any additional 19 // cleanup. 20 @interface AnimatableImage : NSWindow { 21 @private 22 // The image to animate. 23 base::scoped_nsobject<NSImage> image_; 24 25 // The frame of the image before and after the animation. This is in this 26 // window's coordinate system. 27 CGRect startFrame_; 28 CGRect endFrame_; 29 30 // Opacity values for the animation. 31 CGFloat startOpacity_; 32 CGFloat endOpacity_; 33 34 // The amount of time it takes to animate the image. 35 CGFloat duration_; 36 } 37 38 @property(nonatomic) CGRect startFrame; 39 @property(nonatomic) CGRect endFrame; 40 @property(nonatomic) CGFloat startOpacity; 41 @property(nonatomic) CGFloat endOpacity; 42 @property(nonatomic) CGFloat duration; 43 44 // Designated initializer. Do not use any other NSWindow initializers. Creates 45 // but does not show the blank animation window of the given size. The 46 // |animationFrame| should usually be big enough to contain the |startFrame| 47 // and |endFrame| properties of the animation. 48 - (id)initWithImage:(NSImage*)image 49 animationFrame:(NSRect)animationFrame; 50 51 // Begins the animation. 52 - (void)startAnimation; 53 54 @end 55 56 #endif // CHROME_BROWSER_UI_COCOA_ANIMATABLE_IMAGE_H_ 57