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
    kProgressTimerTypeRadial,
    /// Bar
    kProgressTimerTypeBar,
} ProgressTimerType;

/**
 @brief ProgressTimer is a subclass of Node.
 It renders the inner sprite according to the percentage.
 The progress can be Radial, Horizontal or vertical.
 @since v0.99.1
 */
class CC_DLL ProgressTimer : public NodeRGBA
#ifdef EMSCRIPTEN
, public GLBufferedNode
#endif // EMSCRIPTEN
{
public:
    /** Creates a progress timer with the sprite as the shape the timer goes through */
    static ProgressTimer* create(Sprite* sp);

    ProgressTimer();
    virtual ~ProgressTimer();

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

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

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

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

    void setPercentage(float fPercentage);
    void setSprite(Sprite *pSprite);
    void setType(ProgressTimerType type);
    void setReverseProgress(bool reverse);

    inline bool isReverseDirection() { return _reverseDirection; };
    inline void setReverseDirection(bool value) { _reverseDirection = value; };

    /**
     *    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 Point(0,y)
     *        you want a right to left then set the midpoint all the way to Point(1,y)
     *        you want a bottom to top then set the midpoint all the way to Point(x,0)
     *        you want a top to bottom then set the midpoint all the way to Point(x,1)
     */
    void setMidpoint(const Point& point);
    /** Returns the Midpoint */
    Point getMidpoint() const;

    /**
     *    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 Point(0,1); and set the midpoint to = Point(0,.5f);
     */
    inline void setBarChangeRate(const Point& barChangeRate ) { _barChangeRate = barChangeRate; }
    /** Returns the BarChangeRate */
    inline Point getBarChangeRate() const { return _barChangeRate; }

    // Overrides
    virtual void draw(void) override;
    void setAnchorPoint(const Point& anchorPoint) override;
    virtual void setColor(const Color3B& color) override;
    virtual const Color3B& getColor() const override;
    virtual GLubyte getOpacity() const override;
    virtual void setOpacity(GLubyte opacity) override;
    
protected:
    Tex2F textureCoordFromAlphaPoint(Point alpha);
    Vertex2F vertexFromAlphaPoint(Point alpha);
    void updateProgress(void);
    void updateBar(void);
    void updateRadial(void);
    void updateColor(void);
    Point boundaryTexCoord(char index);

    ProgressTimerType _type;
    Point _midpoint;
    Point _barChangeRate;
    float _percentage;
    Sprite *_sprite;
    int _vertexDataCount;
    V2F_C4B_T2F *_vertexData;

    bool _reverseDirection;
};

// end of misc_nodes group
/// @}

NS_CC_END

#endif //__MISC_NODE_CCPROGRESS_TIMER_H__