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/*
* cocos2d for iPhone: http://www.cocos2d-iphone.org
*
* Copyright (c) 2008-2011 Ricardo Quesada
* Copyright (c) 2011 Zynga Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#import "ccConfig.h"
#import "ccMacros.h"
#import "CCDrawingPrimitives.h"
#import "CCLabelAtlas.h"
#import "CCShaderCache.h"
#import "GLProgram.h"
#import "ccGLState.h"
#import "CCDirector.h"
#import "Support/CGPointExtension.h"
#import "Support/TransformUtils.h"
// external
#import "kazmath/GL/matrix.h"
@implementation CCLabelAtlas
#pragma mark CCLabelAtlas - Creation & Init
+(id) labelWithString:(NSString*)string charMapFile:(NSString*)charmapfile itemWidth:(NSUInteger)w itemHeight:(NSUInteger)h startCharMap:(unsigned char)c
{
return [[[self alloc] initWithString:string charMapFile:charmapfile itemWidth:w itemHeight:h startCharMap:c] autorelease];
}
-(id) initWithString:(NSString*) theString charMapFile: (NSString*) charmapfile itemWidth:(NSUInteger)w itemHeight:(NSUInteger)h startCharMap:(unsigned char)c
{
if ((self=[super initWithTileFile:charmapfile tileWidth:w tileHeight:h itemsToRender:[theString length] ]) ) {
mapStartChar_ = c;
[self setString: theString];
}
return self;
}
-(void) dealloc
{
[string_ release];
[super dealloc];
}
#pragma mark CCLabelAtlas - Atlas generation
-(void) updateAtlasValues
{
NSUInteger n = [string_ length];
ccV3F_C4B_T2F_Quad quad;
const unsigned char *s = (unsigned char*) [string_ UTF8String];
CCTexture2D *texture = [textureAtlas_ texture];
float textureWide = [texture pixelsWide];
float textureHigh = [texture pixelsHigh];
float itemWidthInPixels = itemWidth_ * CC_CONTENT_SCALE_FACTOR();
float itemHeightInPixels = itemHeight_ * CC_CONTENT_SCALE_FACTOR();
for( NSUInteger i=0; i<n; i++)
{
unsigned char a = s[i] - mapStartChar_;
float row = (a % itemsPerRow_);
float col = (a / itemsPerRow_);
#if CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL
// Issue #938. Don't use texStepX & texStepY
float left = (2*row*itemWidthInPixels+1)/(2*textureWide);
float right = left+(itemWidthInPixels*2-2)/(2*textureWide);
float top = (2*col*itemHeightInPixels+1)/(2*textureHigh);
float bottom = top+(itemHeightInPixels*2-2)/(2*textureHigh);
#else
float left = row*itemWidthInPixels/textureWide;
float right = left+itemWidthInPixels/textureWide;
float top = col*itemHeightInPixels/textureHigh;
float bottom = top+itemHeightInPixels/textureHigh;
#endif // ! CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL
quad.tl.texCoords.u = left;
quad.tl.texCoords.v = top;
quad.tr.texCoords.u = right;
quad.tr.texCoords.v = top;
quad.bl.texCoords.u = left;
quad.bl.texCoords.v = bottom;
quad.br.texCoords.u = right;
quad.br.texCoords.v = bottom;
quad.bl.vertices.x = (int) (i * itemWidth_);
quad.bl.vertices.y = 0;
quad.bl.vertices.z = 0.0f;
quad.br.vertices.x = (int)(i * itemWidth_ + itemWidth_);
quad.br.vertices.y = 0;
quad.br.vertices.z = 0.0f;
quad.tl.vertices.x = (int)(i * itemWidth_);
quad.tl.vertices.y = (int)(itemHeight_);
quad.tl.vertices.z = 0.0f;
quad.tr.vertices.x = (int)(i * itemWidth_ + itemWidth_);
quad.tr.vertices.y = (int)(itemHeight_);
quad.tr.vertices.z = 0.0f;
ccColor4B c = { color_.r, color_.g, color_.b, opacity_ };
quad.tl.colors = c;
quad.tr.colors = c;
quad.bl.colors = c;
quad.br.colors = c;
[textureAtlas_ updateQuad:&quad atIndex:i];
}
}
#pragma mark CCLabelAtlas - CCLabelProtocol
- (void) setString:(NSString*) newString
{
NSUInteger len = [newString length];
if( len > textureAtlas_.capacity )
[textureAtlas_ resizeCapacity:len];
[string_ release];
string_ = [newString copy];
[self updateAtlasValues];
CGSize s = CGSizeMake(len * itemWidth_, itemHeight_);
[self setContentSize:s];
self.quadsToDraw = len;
}
-(NSString*) string
{
return string_;
}
#pragma mark CCLabelAtlas - DebugDraw
#if CC_LABELATLAS_DEBUG_DRAW
- (void) draw
{
[super draw];
CGSize s = [self contentSize];
CGPoint vertices[4]={
ccp(0,0),ccp(s.width,0),
ccp(s.width,s.height),ccp(0,s.height),
};
ccDrawPoly(vertices, 4, YES);
}
#endif // CC_LABELATLAS_DEBUG_DRAW
@end
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