Open Radar

 
Summary:
Creating a pushbutton in code and giving its layer a shadow causes the shadow to be clipped to view bounds (i.e. ugly, useless). Creating a pushbutton that has a shadow from a XIB and then changing its attributes works fine and causes the shadow to draw properly.

Steps to Reproduce:
Run the following code in a Cocoa application:
==== SNIP! ====
NSRect          wdBox = NSMakeRect(0,0,100,100);
NSWindow    *   theWindow = [[[NSWindow alloc] initWithContentRect: wdBox styleMask: NSTitledWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSResizableWindowMask backing: NSBackingStoreBuffered defer: NO] autorelease];
NSView* cv = [[[NSView alloc] initWithFrame: wdBox] autorelease];
cv.wantsLayer = YES;
[cv setLayerUsesCoreImageFilters: YES];
theWindow.contentView = cv;
[theWindow setCollectionBehavior: NSWindowCollectionBehaviorFullScreenPrimary];
[theWindow setTitle: @"foo"];

NSButton* mView = [[NSButton alloc] initWithFrame: NSMakeRect(10, 10, 100, 80)];
[mView setLayerUsesCoreImageFilters: YES]; // *
[mView setWantsLayer: YES]; // *
mView.layer.masksToBounds = NO; // *
[mView.layer setShadowColor: [NSColor.redColor CGColor]];
[mView.layer setShadowOffset: CGSizeMake(4, 4)];
[mView.layer setShadowRadius: 8];
[mView.layer setShadowOpacity: 1.0];
[mView setBezelStyle: NSRoundRectBezelStyle];
[mView setTitle: @"bar"];
[theWindow.contentView addSubview: mView];
==== UNSNIP! ====

Expected Results:
A window containing a pushbutton with a red shadow below it.

Actual Results:
The shadow draws, but is clipped to the NSView's bounds.

Regression:
This used to work in 10.8 and earlier. The issue is new since 10.9.0.

Notes:
Here's my Stackoverflow thread on the issue: http://stackoverflow.com/questions/20962005/why-is-my-layer-shadow-clipped-to-my-nsviews-rect/

The workaround is to use the following code to create the button:

==== SNIP! ====
@interface WILDButtonOwner : NSViewController

@property (retain,nonatomic) IBOutlet NSButton* button;

@end


@implementation WILDButtonOwner

@end
==== UNSNIP ====

==== SNIP2 ====
WILDButtonOwner * mButtonOwner = [[WILDButtonOwner alloc] initWithNibName: @"WILDButtonOwner" bundle: nil];
[mButtonOwner view];
NSButton* mView = [mButtonOwner button];
==== UNSNIP2====

And a WILDButtonOwner.xib containing a pushbutton (type is irrelevant, it seems, I can change it afterwards), whose button already has a shadow offset, blur radius and color set. The button created from the XIB doesn't clip its shadow.