//

 //  GGBLayer.m

 //  GGB-iPhone

 //

 //  Created by Jens Alfke on 3/7/08.

 //  Copyright 2008 __MyCompanyName__. All rights reserved.

 //

 #import "GGBLayer.h"

 #import "QuartzUtils.h"

 @implementation GGBLayer

 - (NSString*) description

 {

     return [NSString stringWithFormat: @"%@[(%g,%g)]", self.class,self.position.x,self.position.y];

 }

 - (void) redisplayAll

 {

     [self setNeedsDisplay];

     for( CALayer *layer in self.sublayers )

         if( [layer isKindOfClass: [GGBLayer class]] )

             ((GGBLayer*)layer).redisplayAll;

         else

             [layer setNeedsDisplay];

 }

 #if TARGET_OS_ASPEN

 #pragma mark -

 #pragma mark IPHONE VERSION:

 - (id) copyWithZone: (NSZone*)zone

 {

     GGBLayer *clone = [[[self class] alloc] init];

     clone.bounds = self.bounds;

     clone.position = self.position;

     clone.zPosition = self.zPosition;

     clone.anchorPoint = self.anchorPoint;

     clone.transform = self.transform;

     clone.hidden = self.hidden;

     clone.doubleSided = self.doubleSided;

     clone.sublayerTransform = self.sublayerTransform;

     clone.masksToBounds = self.masksToBounds;

     clone.contents = self.contents;                 // doesn't copy contents (shallow-copy)

     clone.contentsRect = self.contentsRect;

     clone.contentsGravity = self.contentsGravity;

     clone.minificationFilter = self.minificationFilter;

     clone.magnificationFilter = self.magnificationFilter;

     clone.opaque = self.opaque;

     clone.needsDisplayOnBoundsChange = self.needsDisplayOnBoundsChange;

     clone.edgeAntialiasingMask = self.edgeAntialiasingMask;

     clone.backgroundColor = self.backgroundColor;

     clone.opacity = self.opacity;

     clone.compositingFilter = self.compositingFilter;

     clone.filters = self.filters;

     clone.backgroundFilters = self.backgroundFilters;

     clone.actions = self.actions;

     clone.name = self.name;

     clone.style = self.style;

     clone.cornerRadius = self.cornerRadius;

     clone.borderWidth = self.borderWidth;

     clone.borderColor = self.borderColor;

     for( GGBLayer *sublayer in self.sublayers ) {

         sublayer = [sublayer copyWithZone: zone];

         [clone addSublayer: sublayer];

     }

     return clone;

 }

 - (CGFloat) cornerRadius    {return _cornerRadius;}

 - (CGFloat) borderWidth     {return _borderWidth;}

 - (CGColorRef) borderColor  {return _borderColor;}

 - (void) setCornerRadius: (CGFloat)r

 {

     if( r != _cornerRadius ) {

         _cornerRadius = r;

         [self setNeedsDisplay];

     }

 }

 - (void) setBorderWidth: (CGFloat)w

 {

     if( w != _borderWidth ) {

         _borderWidth = w;

         self.needsDisplayOnBoundsChange = (_borderWidth>0.0 && _borderColor!=NULL);

         [self setNeedsDisplay];

     }

 }

 - (void) setBackgroundColor: (CGColorRef)color

 {

     if( color != _realBGColor ) {

         CGColorRelease(_realBGColor);

         _realBGColor = CGColorRetain(color);

         [self setNeedsDisplay];

     }

 }

 - (void) setBorderColor: (CGColorRef)color

 {

     if( color != _borderColor ) {

         CGColorRelease(_borderColor);

         _borderColor = CGColorRetain(color);

         self.needsDisplayOnBoundsChange = (_borderWidth>0.0 && _borderColor!=NULL);

         [self setNeedsDisplay];

     }

 }

 - (void)drawInContext:(CGContextRef)ctx

 {

     [super drawInContext: ctx];

     CGContextSaveGState(ctx);

     if( _realBGColor ) {

         CGRect interior = CGRectInset(self.bounds, _borderWidth,_borderWidth);

         CGContextSetFillColorWithColor(ctx, _realBGColor);

         if( _cornerRadius <= 0.0 ) {

             CGContextFillRect(ctx,interior);

         } else {

             CGContextBeginPath(ctx);

             AddRoundRect(ctx,interior,_cornerRadius);

             CGContextFillPath(ctx);

         }

     }

     if( _borderWidth > 0.0 && _borderColor!=NULL ) {

         CGRect border = CGRectInset(self.bounds, _borderWidth/2.0, _borderWidth/2.0);

         CGContextSetStrokeColorWithColor(ctx, _borderColor);

         CGContextSetLineWidth(ctx, _borderWidth);

         if( _cornerRadius <= 0.0 ) {

             CGContextStrokeRect(ctx,border);

         } else {

             CGContextBeginPath(ctx);

             AddRoundRect(ctx,border,_cornerRadius);

             CGContextStrokePath(ctx);

         }

     }

     CGContextRestoreGState(ctx);

 }

 #else

 #pragma mark -

 #pragma mark MAC OS VERSION:

 - (id) copyWithZone: (NSZone*)zone

 {

     // NSLayer isn't copyable, but it is archivable. So create a copy by archiving to

     // a temporary data block, then unarchiving a new layer from that block.

     // One complication is that, due to a bug in Core Animation, CALayer can't archive

     // a pattern-based CGColor. So as a workaround, clear the background before archiving,

     // then restore it afterwards.

     // Also, archiving a CALayer with an image in it leaks memory. (Filed as rdar://5786865 )

     // As a workaround, clear the contents before archiving, then restore.

     CGColorRef bg = CGColorRetain(self.backgroundColor);

     self.backgroundColor = NULL;

     id contents = [self.contents retain];

     self.contents = nil;

     NSData *data = [NSKeyedArchiver archivedDataWithRootObject: self];

     self.backgroundColor = bg;

     self.contents = contents;

     GGBLayer *clone = [NSKeyedUnarchiver unarchiveObjectWithData: data];

     clone.backgroundColor = bg;

     clone.contents = contents;

     CGColorRelease(bg);

     [contents release];

     return [clone retain];

 }

 #endif

 @end