text: /****************************************************************************
  Copyright (c) 2008-2010 Ricardo Quesada
  Copyright (c) 2010-2012 cocos2d-x.org
  Copyright (c) 2011      Zynga Inc.
  CopyRight (c) 2013-2014 Chukong Technologies Inc.
  
  http://www.cocos2d-x.org
  
  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.
  ****************************************************************************/
  
  #ifndef __CCATLAS_NODE_H__
  #define __CCATLAS_NODE_H__
  
  #include "CCNode.h"
  #include "CCProtocols.h"
  #include "ccTypes.h"
  #include "renderer/CCQuadCommand.h"
  
  NS_CC_BEGIN
  
  /**
   * @addtogroup base_nodes
   * @{
   */
  
  class TextureAtlas;
  
  /** @brief AtlasNode is a subclass of Node that implements the RGBAProtocol and TextureProtocol protocol
  
  It knows how to render a TextureAtlas object.
  If you are going to render a TextureAtlas consider subclassing AtlasNode (or a subclass of AtlasNode)
  
  All features from Node are valid, plus the following features:
  - opacity and RGB colors
  */
  class CC_DLL AtlasNode : public Node, public TextureProtocol
  {    
  public:
  	/** creates a AtlasNode  with an Atlas file the width and height of each item and the quantity of items to render*/
  	static AtlasNode * create(const std::string& filename, int tileWidth, int tileHeight, int itemsToRender);
  
      /** updates the Atlas (indexed vertex array).
      * Shall be overridden in subclasses
      */
      virtual void updateAtlasValues();
  
      void setTextureAtlas(TextureAtlas* textureAtlas);
      TextureAtlas* getTextureAtlas() const;
      
      void setQuadsToDraw(ssize_t quadsToDraw);
      ssize_t getQuadsToDraw() const;
  
      
      // Overrides
      virtual void draw(Renderer *renderer, const kmMat4 &transform, bool transformUpdated) override;
      virtual Texture2D* getTexture() const override;
      virtual void setTexture(Texture2D *texture) override;
      virtual bool isOpacityModifyRGB() const override;
      virtual void setOpacityModifyRGB(bool isOpacityModifyRGB) override;
      virtual const Color3B& getColor(void) const override;
      virtual void setColor(const Color3B& color) override;
      virtual void setOpacity(GLubyte opacity) override;
      /**
      * @code
      * When this function bound into js or lua,the parameter will be changed
      * In js: var setBlendFunc(var src, var dst)
      * @endcode
      * @lua NA
      */
      virtual void setBlendFunc(const BlendFunc& blendFunc) override;
      /**
      * @js NA
      * @lua NA
      */
      virtual const BlendFunc& getBlendFunc() const override;
  
  
  protected:
      AtlasNode();
      virtual ~AtlasNode();
  
      /** initializes an AtlasNode  with an Atlas file the width and height of each item and the quantity of items to render*/
      bool initWithTileFile(const std::string& tile, int tileWidth, int tileHeight, int itemsToRender);
  
      /** initializes an AtlasNode  with a texture the width and height of each item measured in points and the quantity of items to render*/
      bool initWithTexture(Texture2D* texture, int tileWidth, int tileHeight, int itemsToRender);
  
      void calculateMaxItems();
      void updateBlendFunc();
      void updateOpacityModifyRGB();
  
      friend class Director;
      void setIgnoreContentScaleFactor(bool bIgnoreContentScaleFactor);
  
      //! chars per row
      int    _itemsPerRow;
      //! chars per column
      int    _itemsPerColumn;
  
      //! width of each char
      int    _itemWidth;
      //! height of each char
      int    _itemHeight;
      
      Color3B    _colorUnmodified;
      
      TextureAtlas* _textureAtlas;
      // protocol variables
      bool _isOpacityModifyRGB;
      BlendFunc _blendFunc;
  
      // quads to draw
      ssize_t _quadsToDraw;
      // color uniform
      GLint    _uniformColor;
      // This varible is only used for LabelAtlas FPS display. So plz don't modify its value.
      bool _ignoreContentScaleFactor;
      // quad command
      QuadCommand _quadCommand;
  
  private:
      CC_DISALLOW_COPY_AND_ASSIGN(AtlasNode);
  
  };
  
  // end of base_node group
  /// @}
  
  NS_CC_END
  
  #endif // __CCATLAS_NODE_H__
  
  
  