| Adopted by | |
| Framework | System/Library/Frameworks/Quartz.framework/ImageKit.framework |
| Availability | Available in Mac OS X v10.5 and later. |
| Declared in | IKSlideshow.h |
The IKSlideshowDataSource protocol describes the methods that an IKSlideshow object uses to access the contents of its data source object.
Important: Slide show data source methods may be called on secondary threads. When you implement these methods, you must ensure that they are safe to run on threads other than the main thread.
– numberOfSlideshowItems required method
– slideshowItemAtIndex: required method
– nameOfSlideshowItemAtIndex:
– canExportSlideshowItemAtIndex:toApplication:
Reports whether the export button should be enabled for a a slideshow item.
- (BOOL)canExportSlideshowItemAtIndex:(NSUInteger)index toApplication:(NSString *)applicationBundleIdentifier
YES if the export button should be enabled for an item; otherwise NO.
IKSlideshow.hReturns the display name for item at the specified index.
- (NSString *)nameOfSlideshowItemAtIndex:(NSUInteger)index
The index for a slideshow item.
The display name. For the best user experience, you should provide the localized name, because this string appears in the user interface.
This method is optional.
IKSlideshow.hReturns the number of items in a slideshow. (required)
- (NSUInteger)numberOfSlideshowItems
The number of items in the slideshow.
Your data source must implement this method.
IKSlideshow.hPerforms custom tasks when the slideshow changes to the item at the specified index.
- (void)slideshowDidChangeCurrentIndex:(NSUInteger)newIndex
The index of the current item.
Image Kit invokes this method when the slideshow changes to the specified item. Implement this method to perform custom tasks at that time.
IKSlideshow.hPerforms custom tasks when the slideshow stops.
- (void)slideshowDidStop
TImage Kit invokes this method when the slideshow stops. Implement this method to perform custom tasks at that time.
– slideshowWillStartIKSlideshow.hReturns the item for a given index (required)
- (id)slideshowItemAtIndex:(NSUInteger)index
An index of an item in the slideshow.
The object that corresponds to the item at the specified index. The item can be any of the following objects: NSImage, NSString (to specify a path name), NSURL, NSFileWrapper, CGImageRef, or PDFPage.
Your data source must implement this method.
IKSlideshow.hPerforms custom tasks when the slideshow is about to start.
- (void)slideshowWillStart
Image Kit invokes this method when the slideshow is about to start. Implement this method to perform custom tasks at that time.
– slideshowDidStopIKSlideshow.hLast updated: 2009-08-25