/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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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.

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THE SOFTWARE.
****************************************************************************/

#ifndef __CCATLAS_NODE_H__
#define __CCATLAS_NODE_H__

#include "CCNode.h"
#include "CCProtocols.h"

class CCAtlasNode : public CCNode, public CCRGBAProtocol, public CCTextureProtocol
{
protected:
	// texture atlas
	//CCTextureAtlas	*textureAtlas_;

	// chars per row
	int m_iItemsPerRow;
	// chars per column
	int m_iItemsPerColumn;

	// texture coordinate x increment
	float m_fTexStepX;
	// texture coordinate y increment
	float m_fTexStepY;

	// width of each char
	int	m_iItemWidth;
	// height of each char
	int	m_iItemHeight;

	// blend function
	//ccBlendFunc		blendFunc_;

	// texture RGBA. 
	//GLubyte		opacity_;
	//ccColor3B	color_;
	ccColor3B	m_tColorUnmodified;
	bool m_bOpacityModifyRGB;

	/** conforms to CCTextureProtocol protocol */
	DECLARE_VAR_READWRITE(CCTextureAtlas *, m_tTextureAtlas, TextureAtlas)

	/** conforms to CCTextureProtocol protocol */
	DECLARE_VAR_READWRITE(ccBlendFunc, m_tBlendFunc, BlendFunc)

	/** conforms to CCRGBAProtocol protocol */
	DECLARE_VAR_READWRITE(GLubyte, m_cOpacity, Opacity)

	/** conforms to CCRGBAProtocol protocol */
	DECLARE_VAR_READWRITE(ccColor3B, m_tColor, Color)

private:

	void calculateMaxItems(void);
	void calculateTexCoordsSteps(void);
	void updateBlendFunc(void);
	void updateOpacityModifyRGB(void);

public:

	CCAtlasNode();

	virtual ~CCAtlasNode();

	/** creates a CCAtlasNode  with an Atlas file the width and height of each item and the quantity of items to render*/
	static void* atlasWithTileFile(NSString* tile, int tileWidth, int tileHeight, int itemsToRender);

	/** initializes an CCAtlasNode  with an Atlas file the width and height of each item and the quantity of items to render*/
	void* initWithTileFile(NSString* tile, int tileWidth, int tileHeight, int itemsToRender;

	/** updates the Atlas (indexed vertex array).
	* Shall be overriden in subclasses
	*/
	void updateAtlasValues(void);

public: //CCNode methods
	virtual void draw(void);

public: //CCRGBAProtocol methods

};

#endif // __CCATLAS_NODE_H__