namespace   cocos2d {

//! @brief  CC RGBA protocol
class CCRGBAProtocol
{
public:
    /** sets Color
     @since v0.8
     */
     void setColor(ccColor3B color);

	/** returns the color
	 @since v0.8
	 */
	ccColor3B getColor(void);

    // returns the opacity
    GLubyte getOpacity(void);

	/** sets the opacity.
	 @warning If the the texture has premultiplied alpha then, the R, G and B channels will be modifed.
	 Values goes from 0 to 255, where 255 means fully opaque.
	 */
	void setOpacity(GLubyte opacity);

	// optional

	/** sets the premultipliedAlphaOpacity property.
	 If set to NO then opacity will be applied as: glColor(R,G,B,opacity);
	 If set to YES then oapcity will be applied as: glColor(opacity, opacity, opacity, opacity );
	 Textures with premultiplied alpha will have this property by default on YES. Otherwise the default value is NO
	 @since v0.8
	 */
	void setIsOpacityModifyRGB(bool bValue);

	/** returns whether or not the opacity will be applied using glColor(R,G,B,opacity) or glColor(opacity, opacity, opacity, opacity);
	 @since v0.8
	 */
	bool getIsOpacityModifyRGB(void);
};

/**
 @brief You can specify the blending fuction.
 @since v0.99.0
 */
class  CCBlendProtocol
{

	// set the source blending function for the texture
	void setBlendFunc(ccBlendFunc blendFunc);

	// returns the blending function used for the texture
	ccBlendFunc getBlendFunc(void);
};

/** @brief CCNode objects that uses a Texture2D to render the images.
 The texture can have a blending function.
 If the texture has alpha premultiplied the default blending function is:
    src=GL_ONE dst= GL_ONE_MINUS_SRC_ALPHA
 else
	src=GL_SRC_ALPHA dst= GL_ONE_MINUS_SRC_ALPHA
 But you can change the blending funtion at any time.
 @since v0.8.0
 */
class  CCTextureProtocol : public CCBlendProtocol
{

	// returns the used texture
	CCTexture2D* getTexture(void);

	// sets a new texture. it will be retained
	void setTexture(CCTexture2D *texture);
};

//! @brief Common interface for Labels
class  CCLabelProtocol
{

	// sets a new label using an string
	void setString(const char *label);

	/** returns the string that is rendered */
	const char* getString(void);
};

/** OpenGL projection protocol */
class  CCProjectionProtocol : public CCObject
{

	/** Called by CCDirector when the porjection is updated, and "custom" projection is used
	@since v0.99.5
	*/
	void updateProjection(void);
};

}//namespace   cocos2d