axmol/cocos2dx/misc_nodes/CCProgressTimer.h

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Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2010      Lam Pham

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#ifndef __MISC_NODE_CCPROGRESS_TIMER_H__
#define __MISC_NODE_CCPROGRESS_TIMER_H__

#include "sprite_nodes/CCSprite.h"
#ifdef EMSCRIPTEN
#include "base_nodes/CCGLBufferedNode.h"
#endif // EMSCRIPTEN

NS_CC_BEGIN

/**
 * @addtogroup misc_nodes
 * @{
 */

/** Types of progress
 @since v0.99.1
 */
typedef enum {
    /// Radial Counter-Clockwise
    kCCProgressTimerTypeRadial,
    /// Bar
    kCCProgressTimerTypeBar,
} CCProgressTimerType;

/**
 @brief CCProgressTimer is a subclass of CCNode.
 It renders the inner sprite according to the percentage.
 The progress can be Radial, Horizontal or vertical.
 @since v0.99.1
 */
class CC_DLL CCProgressTimer : public CCNodeRGBA
#ifdef EMSCRIPTEN
, public CCGLBufferedNode
#endif // EMSCRIPTEN
{
public:
    CCProgressTimer();
    ~CCProgressTimer(void);

    /**    Change the percentage to change progress. */
    inline CCProgressTimerType getType(void) { return _type; }

    /** Percentages are from 0 to 100 */
    inline float getPercentage(void) {return _percentage; }

    /** The image to show the progress percentage, retain */
    inline CCSprite* getSprite(void) { return _sprite; }

    /** Initializes a progress timer with the sprite as the shape the timer goes through */
    bool initWithSprite(CCSprite* sp);

    void setPercentage(float fPercentage);
    void setSprite(CCSprite *pSprite);
    void setType(CCProgressTimerType type);
    void setReverseProgress(bool reverse);

    virtual void draw(void);
    void setAnchorPoint(CCPoint anchorPoint);

    virtual void setOpacityModifyRGB(bool bValue);
    virtual bool isOpacityModifyRGB(void);
    
    inline bool isReverseDirection() { return _reverseDirection; };
    inline void setReverseDirection(bool value) { _reverseDirection = value; };

public:
    /** Creates a progress timer with the sprite as the shape the timer goes through */
    static CCProgressTimer* create(CCSprite* sp);
protected:
    ccTex2F textureCoordFromAlphaPoint(CCPoint alpha);
    ccVertex2F vertexFromAlphaPoint(CCPoint alpha);
    void updateProgress(void);
    void updateBar(void);
    void updateRadial(void);
    void updateColor(void);
    CCPoint boundaryTexCoord(char index);

protected:
    CCProgressTimerType _type;
    float _percentage;
    CCSprite *_sprite;
    int _vertexDataCount;
    ccV2F_C4B_T2F *_vertexData;

    /**
     *    Midpoint is used to modify the progress start position.
     *    If you're using radials type then the midpoint changes the center point
     *    If you're using bar type the the midpoint changes the bar growth
     *        it expands from the center but clamps to the sprites edge so:
     *        you want a left to right then set the midpoint all the way to ccp(0,y)
     *        you want a right to left then set the midpoint all the way to ccp(1,y)
     *        you want a bottom to top then set the midpoint all the way to ccp(x,0)
     *        you want a top to bottom then set the midpoint all the way to ccp(x,1)
     */
    CC_PROPERTY(CCPoint, _midpoint, Midpoint);

    /**
     *    This allows the bar type to move the component at a specific rate
     *    Set the component to 0 to make sure it stays at 100%.
     *    For example you want a left to right bar but not have the height stay 100%
     *    Set the rate to be ccp(0,1); and set the midpoint to = ccp(0,.5f);
     */
    CC_SYNTHESIZE(CCPoint, _barChangeRate, BarChangeRate);

    bool _reverseDirection;
};

// end of misc_nodes group
/// @}

NS_CC_END

#endif //__MISC_NODE_CCPROGRESS_TIMER_H__