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/* This code is based on Apple's "GeekGameBoard" sample code, version 1.0.
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http://developer.apple.com/samplecode/GeekGameBoard/
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Copyright © 2007 Apple Inc. Copyright © 2008 Jens Alfke. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted
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provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list of conditions
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and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this list of
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conditions and the following disclaimer in the documentation and/or other materials provided
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with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
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BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "Stack.h"
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#import "QuartzUtils.h"
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@implementation Stack
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- (id) initWithStartPos: (CGPoint)startPos spacing: (CGSize)spacing
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wrapInterval: (int)wrapInterval wrapSpacing: (CGSize)wrapSpacing
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{
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self = [super init];
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if (self != nil) {
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_startPos = startPos;
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_spacing = spacing;
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_wrapInterval = wrapInterval;
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_wrapSpacing = wrapSpacing;
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self.cornerRadius = 8;
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self.backgroundColor = kAlmostInvisibleWhiteColor;
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self.borderColor = kHighlightColor;
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_bits = [[NSMutableArray alloc] init];
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}
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return self;
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}
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- (id) initWithStartPos: (CGPoint)startPos spacing: (CGSize)spacing;
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{
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return [self initWithStartPos: startPos spacing: spacing
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wrapInterval: INT_MAX wrapSpacing: CGSizeZero];
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}
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- (void) dealloc
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{
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[_bits release];
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[super dealloc];
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}
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@synthesize spacing=_spacing, wrapSpacing=_wrapSpacing, startPos=_startPos, wrapInterval=_wrapInterval;
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@synthesize dragAsStacks=_dragAsStacks;
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@synthesize bits=_bits;
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- (Bit*) topBit
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{
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return [_bits lastObject];
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}
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- (void) dump
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{
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printf("Stack = ");
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for( GGBLayer *layer in self.sublayers )
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printf("%s @z=%g ", [[layer description] UTF8String],layer.zPosition);
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printf("\n");
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}
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- (void) x_repositionBit: (Bit*)bit forIndex: (int)i
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{
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bit.position = CGPointMake(_startPos.x + _spacing.width *(i%_wrapInterval) + _wrapSpacing.width *(i/_wrapInterval),
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_startPos.y + _spacing.height*(i%_wrapInterval) + _wrapSpacing.height*(i/_wrapInterval));
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}
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- (void) addBit: (Bit*)bit
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{
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if( [bit isKindOfClass: [DraggedStack class]] ) {
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for( Bit *subBit in [(DraggedStack*)bit bits] )
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[self addBit: subBit];
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} else {
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int n = _bits.count;
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[_bits addObject: bit];
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ChangeSuperlayer(bit, self, n);
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[self x_repositionBit: bit forIndex: n];
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}
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}
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- (void) setHighlighted: (BOOL)highlighted
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{
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[super setHighlighted: highlighted];
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self.borderWidth = (highlighted ?6 :0);
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}
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- (Bit*) canDragBit: (Bit*)bit
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{
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NSInteger index = [_bits indexOfObjectIdenticalTo: bit];
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if( index==NSNotFound )
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return nil;
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if( _dragAsStacks && index < _bits.count-1 ) {
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// Move bit and those above it into a temporary DraggedStack:
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NSRange r = NSMakeRange(index,_bits.count-index);
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NSArray *bitsToDrag = [_bits subarrayWithRange: r];
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[_bits removeObjectsInRange: r];
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DraggedStack *stack = [[DraggedStack alloc] initWithBits: bitsToDrag];
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[self addSublayer: stack];
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[stack release];
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stack.anchorPoint = CGPointMake( bit.position.x/stack.bounds.size.width,
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bit.position.y/stack.bounds.size.height );
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stack.position = bit.position;
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return stack;
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} else {
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[bit retain];
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[_bits removeObjectIdenticalTo: bit];
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return [bit autorelease];
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}
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}
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- (void) cancelDragBit: (Bit*)bit
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{
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[self addBit: bit];
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if( [bit isKindOfClass: [DraggedStack class]] ) {
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[bit removeFromSuperlayer];
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}
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}
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- (void) draggedBit: (Bit*)bit to: (id<BitHolder>)dst
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{
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int i=0;
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for( Bit *bit in self.sublayers )
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[self x_repositionBit: bit forIndex: i++];
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}
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- (BOOL) dropBit: (Bit*)bit atPoint: (CGPoint)point
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{
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[self addBit: bit];
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return YES;
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}
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@end
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@implementation DraggedStack
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- (id) initWithBits: (NSArray*)bits
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{
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self = [super init];
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if( self ) {
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CGRect bounds = CGRectZero;
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for( Bit *bit in bits ) {
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bounds = CGRectUnion(bounds, bit.frame);
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[self addSublayer: bit];
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}
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self.bounds = bounds;
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self.anchorPoint = CGPointZero;
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self.position = CGPointZero;
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}
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return self;
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}
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- (NSArray*) bits
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{
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return [self.sublayers.copy autorelease];
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}
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@end
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