axmol/cocos/2d/CCProgressTimer.h

/****************************************************************************
Copyright (c) 2010      Lam Pham
Copyright (c) 2010-2012 cocos2d-x.org
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
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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,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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****************************************************************************/
#ifndef __MISC_NODE_CCPROGRESS_TIMER_H__
#define __MISC_NODE_CCPROGRESS_TIMER_H__

#include "renderer/CCCustomCommand.h"
#include "2d/CCNode.h"

NS_CC_BEGIN

class Sprite;

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

/**
 @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 Node
{
public:
    /** Types of progress
     @since v0.99.1
     */
    enum class Type
    {
        /// Radial Counter-Clockwise
        RADIAL,
        /// Bar
        BAR,
    };
    
    /** Creates a progress timer with the sprite as the shape the timer goes through */
    static ProgressTimer* create(Sprite* sp);

    /** Change the percentage to change progress. */
    inline Type 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 percentage);
    void setSprite(Sprite *sprite);
    void setType(Type type);
    /**
     * @js setReverseDirection
     * @lua setReverseDirection
     */
    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 Vec2(0,y)
     *        you want a right to left then set the midpoint all the way to Vec2(1,y)
     *        you want a bottom to top then set the midpoint all the way to Vec2(x,0)
     *        you want a top to bottom then set the midpoint all the way to Vec2(x,1)
     */
    void setMidpoint(const Vec2& point);
    /** Returns the Midpoint */
    Vec2 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 Vec2(0,1); and set the midpoint to = Vec2(0,.5f);
     */
    inline void setBarChangeRate(const Vec2& barChangeRate ) { _barChangeRate = barChangeRate; }
    /** Returns the BarChangeRate */
    inline Vec2 getBarChangeRate() const { return _barChangeRate; }

    // Overrides
    virtual void draw(Renderer *renderer, const Mat4 &transform, uint32_t flags) override;
    virtual void setAnchorPoint(const Vec2& anchorPoint) override;
    virtual void setColor(const Color3B &color) override;
    virtual const Color3B& getColor() const override;
    virtual void setOpacity(GLubyte opacity) override;
    virtual GLubyte getOpacity() const override;
    
CC_CONSTRUCTOR_ACCESS:
    /**
     * @js ctor
     */
    ProgressTimer();
    /**
     * @js NA
     * @lua NA
     */
    virtual ~ProgressTimer();
    
    /** Initializes a progress timer with the sprite as the shape the timer goes through */
    bool initWithSprite(Sprite* sp);
    
protected:
    void onDraw(const Mat4 &transform, uint32_t flags);
    
    Tex2F textureCoordFromAlphaPoint(Vec2 alpha);
    Vec2 vertexFromAlphaPoint(Vec2 alpha);
    void updateProgress(void);
    void updateBar(void);
    void updateRadial(void);
    virtual void updateColor(void) override;
    Vec2 boundaryTexCoord(char index);

    Type _type;
    Vec2 _midpoint;
    Vec2 _barChangeRate;
    float _percentage;
    Sprite *_sprite;
    int _vertexDataCount;
    V2F_C4B_T2F *_vertexData;
    
    CustomCommand _customCommand;

    bool _reverseDirection;

private:
    CC_DISALLOW_COPY_AND_ASSIGN(ProgressTimer);
};

// end of misc_nodes group
/// @}

NS_CC_END

#endif //__MISC_NODE_CCPROGRESS_TIMER_H__