jens@1: //
jens@1: //  GGBLayer.m
jens@1: //  GGB-iPhone
jens@1: //
jens@1: //  Created by Jens Alfke on 3/7/08.
jens@1: //  Copyright 2008 __MyCompanyName__. All rights reserved.
jens@1: //
jens@1: 
jens@1: #import "GGBLayer.h"
jens@1: #import "QuartzUtils.h"
jens@11: #import "GGBUtils.h"
jens@11: 
jens@11: 
jens@11: NSString* const GGBLayerStyleChangedNotification = @"GGBLayerStyleChanged";
jens@1: 
jens@1: 
jens@1: @implementation GGBLayer
jens@1: 
jens@1: 
jens@1: - (NSString*) description
jens@1: {
jens@1:     return [NSString stringWithFormat: @"%@[(%g,%g)]", self.class,self.position.x,self.position.y];
jens@1: }
jens@1: 
jens@1: 
jens@4: - (void) redisplayAll
jens@4: {
jens@4:     [self setNeedsDisplay];
jens@4:     for( CALayer *layer in self.sublayers )
jens@4:         if( [layer isKindOfClass: [GGBLayer class]] )
jens@4:             ((GGBLayer*)layer).redisplayAll;
jens@4:         else
jens@4:             [layer setNeedsDisplay];
jens@4: }
jens@4: 
jens@4: 
jens@7: /*
jens@7: - (void)addAnimation:(CAAnimation *)anim forKey:(NSString *)key 
jens@7: {
jens@7:     NSLog(@"%@[%p] addAnimation: %p forKey: %@",[self class],self,anim,key);
jens@7:     [super addAnimation: anim forKey: key];
jens@7: }
jens@7: */
jens@7: 
jens@7: 
jens@7: - (void) animateAndBlock: (NSString*)keyPath from: (id)from to: (id)to duration: (NSTimeInterval)duration
jens@7: {
jens@7:     //WARNING: This code works, but is a mess. I hope to find a better way to do this. --Jens 3/16/08
jens@7:     CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath: keyPath];
jens@7:     anim.duration= duration;
jens@7:     anim.fromValue = from;
jens@7:     anim.toValue = to;
jens@7:     anim.isRemovedOnCompletion = YES;
jens@7:     anim.delegate = self;
jens@7:     [self addAnimation:anim forKey: @"animateAndBlock:"];
jens@7:     _curAnimation = (id)[self animationForKey: @"animateAndBlock:"];
jens@7:     [self setValue: to forKeyPath: keyPath];    // animation doesn't update the property value
jens@7: 
jens@7:     // Now wait for it to finish:
jens@7:     while( _curAnimation ) {
jens@7:         [[NSRunLoop currentRunLoop] runMode: NSDefaultRunLoopMode//NSEventTrackingRunLoopMode
jens@7:                                  beforeDate: [NSDate dateWithTimeIntervalSinceNow: 0.1]];
jens@7:     }
jens@7: }
jens@7: 
jens@7: - (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
jens@7: {
jens@7:     if( anim==_curAnimation ) {
jens@7:         _curAnimation = nil;
jens@7:     }
jens@7: }
jens@7: 
jens@7: 
jens@11: - (void) setStyle: (NSDictionary*)style
jens@11: {
jens@11:     if( style != _styleDict ) {
jens@11:         if( _styleDict )
jens@11:             [[NSNotificationCenter defaultCenter] removeObserver: self 
jens@11:                                                             name: GGBLayerStyleChangedNotification
jens@11:                                                           object: _styleDict];
jens@11:         if( style )
jens@11:             [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(_styleChanged)
jens@11:                                                          name: GGBLayerStyleChangedNotification
jens@11:                                                        object: style];
jens@11:         setObj(&_styleDict,style);
jens@11:     }
jens@11:     [super setStyle: style];
jens@11: }
jens@11: 
jens@11: - (void) _styleChanged
jens@11: {
jens@11:     // Reapply the style, so any changes in the dict will take effect.
jens@11:     [super setStyle: _styleDict];
jens@11: }
jens@11: 
jens@11: - (void) dealloc
jens@11: {
jens@11:     if( _styleDict )
jens@11:         [[NSNotificationCenter defaultCenter] removeObserver: self
jens@11:                                                         name: GGBLayerStyleChangedNotification
jens@11:                                                       object: _styleDict];
jens@11:     [super dealloc];
jens@11: }
jens@11: 
jens@11: 
jens@11: - (void) setValue: (id)value ofStyleProperty: (NSString*)prop
jens@11: {
jens@11:     if( _styleDict ) {
jens@11:         id oldValue = [_styleDict objectForKey: prop];
jens@11:         if( oldValue != value ) {
jens@11:             if( value )
jens@11:                 [_styleDict setObject: value forKey: prop];
jens@11:             else
jens@11:                 [_styleDict removeObjectForKey: prop];
jens@11:             [[NSNotificationCenter defaultCenter] postNotificationName: GGBLayerStyleChangedNotification
jens@11:                                                                 object: _styleDict];
jens@11:         }
jens@11:     } else
jens@11:         [self setValue: value forKey: prop];
jens@11: }
jens@11: 
jens@11: 
jens@11: 
jens@8: #if TARGET_OS_IPHONE
jens@1: 
jens@1: #pragma mark -
jens@1: #pragma mark IPHONE VERSION:
jens@1: 
jens@1: 
jens@1: - (id) copyWithZone: (NSZone*)zone
jens@1: {
jens@1:     GGBLayer *clone = [[[self class] alloc] init];
jens@1:     clone.bounds = self.bounds;
jens@1:     clone.position = self.position;
jens@1:     clone.zPosition = self.zPosition;
jens@1:     clone.anchorPoint = self.anchorPoint;
jens@1:     clone.transform = self.transform;
jens@1:     clone.hidden = self.hidden;
jens@1:     clone.doubleSided = self.doubleSided;
jens@1:     clone.sublayerTransform = self.sublayerTransform;
jens@1:     clone.masksToBounds = self.masksToBounds;
jens@1:     clone.contents = self.contents;                 // doesn't copy contents (shallow-copy)
jens@1:     clone.contentsRect = self.contentsRect;
jens@1:     clone.contentsGravity = self.contentsGravity;
jens@1:     clone.minificationFilter = self.minificationFilter;
jens@1:     clone.magnificationFilter = self.magnificationFilter;
jens@1:     clone.opaque = self.opaque;
jens@1:     clone.needsDisplayOnBoundsChange = self.needsDisplayOnBoundsChange;
jens@1:     clone.edgeAntialiasingMask = self.edgeAntialiasingMask;
jens@1:     clone.backgroundColor = self.backgroundColor;
jens@1:     clone.opacity = self.opacity;
jens@1:     clone.compositingFilter = self.compositingFilter;
jens@1:     clone.filters = self.filters;
jens@1:     clone.backgroundFilters = self.backgroundFilters;
jens@1:     clone.actions = self.actions;
jens@1:     clone.name = self.name;
jens@1:     clone.style = self.style;
jens@1:     
jens@1:     clone.cornerRadius = self.cornerRadius;
jens@1:     clone.borderWidth = self.borderWidth;
jens@1:     clone.borderColor = self.borderColor;
jens@1:     
jens@1:     for( GGBLayer *sublayer in self.sublayers ) {
jens@1:         sublayer = [sublayer copyWithZone: zone];
jens@1:         [clone addSublayer: sublayer];
jens@1:     }
jens@1:     return clone;
jens@1: }
jens@1: 
jens@1: 
jens@1: - (CGFloat) cornerRadius    {return _cornerRadius;}
jens@1: - (CGFloat) borderWidth     {return _borderWidth;}
jens@9: - (CGColorRef) backgroundColor {return _realBGColor;}
jens@1: - (CGColorRef) borderColor  {return _borderColor;}
jens@1: 
jens@1: - (void) setCornerRadius: (CGFloat)r
jens@1: {
jens@1:     if( r != _cornerRadius ) {
jens@1:         _cornerRadius = r;
jens@1:         [self setNeedsDisplay];
jens@1:     }
jens@1: }
jens@1: 
jens@1: 
jens@1: - (void) setBorderWidth: (CGFloat)w
jens@1: {
jens@1:     if( w != _borderWidth ) {
jens@1:         _borderWidth = w;
jens@1:         self.needsDisplayOnBoundsChange = (_borderWidth>0.0 && _borderColor!=NULL);
jens@1:         [self setNeedsDisplay];
jens@1:     }
jens@1: }
jens@1: 
jens@1: 
jens@1: - (void) setBackgroundColor: (CGColorRef)color
jens@1: {
jens@1:     if( color != _realBGColor ) {
jens@1:         CGColorRelease(_realBGColor);
jens@1:         _realBGColor = CGColorRetain(color);
jens@1:         [self setNeedsDisplay];
jens@1:     }
jens@1: }
jens@1: 
jens@1: 
jens@1: - (void) setBorderColor: (CGColorRef)color
jens@1: {
jens@1:     if( color != _borderColor ) {
jens@1:         CGColorRelease(_borderColor);
jens@1:         _borderColor = CGColorRetain(color);
jens@1:         self.needsDisplayOnBoundsChange = (_borderWidth>0.0 && _borderColor!=NULL);
jens@1:         [self setNeedsDisplay];
jens@1:     }
jens@1: }
jens@1: 
jens@1: 
jens@1: - (void)drawInContext:(CGContextRef)ctx
jens@1: {
jens@4:     [super drawInContext: ctx];
jens@4:     
jens@1:     CGContextSaveGState(ctx);
jens@1: 
jens@1:     if( _realBGColor ) {
jens@1:         CGRect interior = CGRectInset(self.bounds, _borderWidth,_borderWidth);
jens@1:         CGContextSetFillColorWithColor(ctx, _realBGColor);
jens@1:         if( _cornerRadius <= 0.0 ) {
jens@1:             CGContextFillRect(ctx,interior);
jens@1:         } else {
jens@1:             CGContextBeginPath(ctx);
jens@1:             AddRoundRect(ctx,interior,_cornerRadius);
jens@1:             CGContextFillPath(ctx);
jens@1:         }
jens@1:     }
jens@1:     
jens@1:     if( _borderWidth > 0.0 && _borderColor!=NULL ) {
jens@1:         CGRect border = CGRectInset(self.bounds, _borderWidth/2.0, _borderWidth/2.0);
jens@1:         CGContextSetStrokeColorWithColor(ctx, _borderColor);
jens@1:         CGContextSetLineWidth(ctx, _borderWidth);
jens@1:         
jens@1:         if( _cornerRadius <= 0.0 ) {
jens@1:             CGContextStrokeRect(ctx,border);
jens@1:         } else {
jens@1:             CGContextBeginPath(ctx);
jens@1:             AddRoundRect(ctx,border,_cornerRadius);
jens@1:             CGContextStrokePath(ctx);
jens@1:         }
jens@1:     }
jens@1:     
jens@1:     CGContextRestoreGState(ctx);
jens@1: }
jens@1: 
jens@1: 
jens@1: #else
jens@1: 
jens@1: #pragma mark -
jens@1: #pragma mark MAC OS VERSION:
jens@1: 
jens@1: 
jens@1: - (id) copyWithZone: (NSZone*)zone
jens@1: {
jens@1:     // NSLayer isn't copyable, but it is archivable. So create a copy by archiving to
jens@1:     // a temporary data block, then unarchiving a new layer from that block.
jens@1:     
jens@1:     // One complication is that, due to a bug in Core Animation, CALayer can't archive
jens@1:     // a pattern-based CGColor. So as a workaround, clear the background before archiving,
jens@1:     // then restore it afterwards.
jens@1:     
jens@1:     // Also, archiving a CALayer with an image in it leaks memory. (Filed as rdar://5786865 )
jens@1:     // As a workaround, clear the contents before archiving, then restore.
jens@1:     
jens@1:     CGColorRef bg = CGColorRetain(self.backgroundColor);
jens@1:     self.backgroundColor = NULL;
jens@1:     id contents = [self.contents retain];
jens@1:     self.contents = nil;
jens@1:     
jens@1:     NSData *data = [NSKeyedArchiver archivedDataWithRootObject: self];
jens@1:     
jens@1:     self.backgroundColor = bg;
jens@1:     self.contents = contents;
jens@1: 
jens@1:     GGBLayer *clone = [NSKeyedUnarchiver unarchiveObjectWithData: data];
jens@1:     clone.backgroundColor = bg;
jens@1:     clone.contents = contents;
jens@1:     CGColorRelease(bg);
jens@1:     [contents release];
jens@1: 
jens@1:     return [clone retain];
jens@1: }
jens@1: 
jens@1: 
jens@1: #endif
jens@1: 
jens@1: 
jens@1: @end
jens@9: 
jens@9: 
jens@9: 
jens@9: #pragma mark -
jens@9: #pragma mark UTILITIES:
jens@9: 
jens@9: 
jens@9: void BeginDisableAnimations(void)
jens@9: {
jens@9:     [CATransaction begin];
jens@9:     [CATransaction setValue:(id)kCFBooleanTrue
jens@9:                      forKey:kCATransactionDisableActions];
jens@9: }
jens@9: 
jens@9: void EndDisableAnimations(void)
jens@9: {
jens@9:     [CATransaction commit];
jens@9: } 
jens@9: 
jens@9: 
jens@9: void ChangeSuperlayer( CALayer *layer, CALayer *newSuperlayer, int index )
jens@9: {
jens@9:     // Disable actions, else the layer will move to the wrong place and then back!
jens@9:     [CATransaction flush];
jens@9:     BeginDisableAnimations();
jens@9:     
jens@9:     CGPoint pos = layer.position;
jens@9:     if( layer.superlayer )
jens@9:         pos = [newSuperlayer convertPoint: pos fromLayer: layer.superlayer];
jens@9:     [layer retain];
jens@9:     [layer removeFromSuperlayer];
jens@9:     layer.position = pos;
jens@9:     if( index >= 0 )
jens@9:         [newSuperlayer insertSublayer: layer atIndex: index];
jens@9:     else
jens@9:         [newSuperlayer addSublayer: layer];
jens@9:     [layer release];
jens@9:     
jens@9:     EndDisableAnimations();
jens@9: }
jens@9: 
jens@9: 
jens@9: void RemoveImmediately( CALayer *layer )
jens@9: {
jens@9:     [CATransaction flush];
jens@9:     BeginDisableAnimations();
jens@9:     [layer removeFromSuperlayer];
jens@9:     EndDisableAnimations();
jens@9: }    
jens@9: 
jens@9: 
jens@10: CGColorRef GetEffectiveBackground( CALayer *layer )
jens@10: {
jens@10:     for( ; layer; layer=layer.superlayer ) {
jens@10:         CGColorRef bg = layer.backgroundColor;
jens@10:         if( bg )
jens@10:             return bg;
jens@10:     }
jens@10:     return nil;
jens@10: }