/*

     File: SlideshowView.h

 Abstract: A SlideshowView displays a single NSImage at a time, and can transition to a new image using any of the Core Animation / Core Image supported transition effects.

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*/

#import <Cocoa/Cocoa.h>

@class CIImage;

@class CATransition;

// SlideshowView demonstrates the use of CATransition animations with a layer-backed view subtree.

// A SlideshowView displays a single NSImage at a time, and can be asked to switch to a

// different NSImage via the -transitionToImage: method.

// Following is the set of transition styles that SlideshowView supports.  Some map to

// Core Animation's built-in transition types; the rest are implemented using Core Image's

// standard set of transition filters.

typedef enum {

    // Core Animation's four built-in transition types

    SlideshowViewFadeTransitionStyle,

    SlideshowViewMoveInTransitionStyle,

    SlideshowViewPushTransitionStyle,

    SlideshowViewRevealTransitionStyle,

    // Core Image's standard set of transition filters

    SlideshowViewCopyMachineTransitionStyle,

    SlideshowViewDisintegrateWithMaskTransitionStyle,

    SlideshowViewDissolveTransitionStyle,

    SlideshowViewFlashTransitionStyle,

    SlideshowViewModTransitionStyle,

    SlideshowViewPageCurlTransitionStyle,

    SlideshowViewRippleTransitionStyle,

    SlideshowViewSwipeTransitionStyle,

    NumberOfSlideshowViewTransitionStyles

} SlideshowViewTransitionStyle;

@interface SlideshowView : NSView {

    NSImageView     *currentImageView;          // an NSImageView that displays the current image, as a subview of the SlideshowView

    NSInteger transitionStyle;                  // the style of transition to use; one of the SlideshowViewTransitionStyle values enumerated above

    BOOL            autoCyclesTransitionStyle;  // set if we should automatically cycle our transitionStyle

    CIImage         *inputShadingImage;         // an environment-map image that the transition filter may use in generating the transition effect

    CIImage         *inputMaskImage;            // a mask image that the transition filter may use in generating the transition effect

}

- (id)initWithFrame:(NSRect)newFrame;

- (SlideshowViewTransitionStyle)transitionStyle;

- (void)setTransitionStyle:(SlideshowViewTransitionStyle)newTransitionStyle;

- (BOOL)autoCyclesTransitionStyle;

- (void)setAutoCyclesTransitionStyle:(BOOL)flag;

- (void)transitionToImage:(NSImage *)newImage;

@end