Layer Filters - Core Animation - page 96

The remaining sliders are connected in the same way as specified by the key-paths in
Table 6-1.

The complete application has a minimal number of lines of code, largely due to the
power of data bindings. The complete AppDelegate implementation is shown in
Listing 6-11.

LISTING 6-11 Complete AppDelegate Code

@interface AppDelegate : NSObject {
IBOutlet NSView *displayView;
CALayer *imageLayer;

}

@property ( retain ) CALayer *imageLayer;

- ( NSArray *)filters;
- ( CGImageRef )nsImageToCGImageRef:(NSImage*)image;

@end

@implementation AppDelegate

@synthesize imageLayer;

- ( void )awakeFromNib;
{

[displayView setWantsLayer: YES ];

imageLayer = [[ CALayer layer ] retain ];

CGRect frame = CGRectMake (0.0f,
0.0f,
[displayView frame ]. size . width ,
[displayView frame ]. size . height );

[imageLayer setFrame :frame];
[imageLayer setCornerRadius :15.0f];
[imageLayer setBorderWidth :3.0f];
[imageLayer setMasksToBounds : YES ];

NSString *imagePath = [[ NSBundle mainBundle ]
pathForResource : @”balloon”
ofType : @”jpg” ];