axmol/cocos/ui/UISlider.h

/****************************************************************************
Copyright (c) 2013-2017 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
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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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 __UISLIDER_H__
#define __UISLIDER_H__

#include "ui/UIWidget.h"
#include "ui/GUIExport.h"

NS_CC_BEGIN

/**
 * @addtogroup ui
 * @{
 */

class Sprite;
struct CC_DLL ResourceData;

namespace ui {
    class Scale9Sprite;
    
typedef enum
{
    SLIDER_PERCENTCHANGED
}SliderEventType;

typedef void (Ref::*SEL_SlidPercentChangedEvent)(Ref*,SliderEventType);
#define sliderpercentchangedselector(_SELECTOR) (SEL_SlidPercentChangedEvent)(&_SELECTOR)

/** 
 * @brief UI Slider widget.
 */
class CC_GUI_DLL Slider : public Widget
{
    
    DECLARE_CLASS_GUI_INFO
    
public:
    /** EventType Slider event type.
     */
    enum class EventType
    {
        ON_PERCENTAGE_CHANGED,
        //@since v3.7
        ON_SLIDEBALL_DOWN,
        ON_SLIDEBALL_UP,
        ON_SLIDEBALL_CANCEL
    };
    typedef std::function<void(Ref*,EventType)> ccSliderCallback;
    /**
     * Default constructor.
     * @js ctor
     * @lua new
     */
    Slider();
    
    /**
     * Default destructor.
     * @js NA
     * @lua NA
     */
    virtual ~Slider();
    
    /** Create a slider widget.
     *
     * @return An autoreleased Slider object.
     */
    static Slider* create();
    
    /** Create a slider widget with bar texture, ball texture and texture resource type.
     *
     * @param barTextureName Bar texture file name.
     * @param normalBallTextureName Ball texture file name.
     * @param resType Texture resource type.
     * @return An autoreleased Slider object.
     */
    static Slider* create(const std::string& barTextureName,
                          const std::string& normalBallTextureName,
                          TextureResType resType = TextureResType::LOCAL);
    
    /**
     * Load texture for slider bar.
     *
     * @param fileName   File name of texture.
     * @param resType    @see TextureResType .
     */
    void loadBarTexture(const std::string& fileName,TextureResType resType = TextureResType::LOCAL);
    
    /**
     * Sets if slider is using scale9 renderer.
     * @param able True that using scale9 renderer, false otherwise.
     */
    void setScale9Enabled(bool able);
    
    /**
     * Gets If slider is using scale9 renderer.
     * @return True that using scale9 renderer, false otherwise.
     */
    bool isScale9Enabled()const;
    
    /**
     * Sets capinsets for slider, if slider is using scale9 renderer.
     * @param capInsets Capinsets for slider.
     */
    void setCapInsets(const Rect &capInsets);
    
    /**
     * Sets capinsets for bar slider, if slider is using scale9 renderer.
     * @param capInsets Capinsets for bar slider.
     */
    void setCapInsetsBarRenderer(const Rect &capInsets);
    
    /**
     * Gets capinsets for bar slider, if slider is using scale9 renderer.
     * @return capInsets Capinsets for bar slider.
     */
    const Rect& getCapInsetsBarRenderer()const;
    
    /**
     * Sets capinsets for progress bar slider, if slider is using scale9 renderer.
     * @param capInsets Capinsets for progress bar slider.
     * @js NA
     */
    void setCapInsetProgressBarRenderer(const Rect &capInsets);
    
    /**
     * Gets capinsets for progress bar slider, if slider is using scale9 renderer.
     * @return Capinsets for progress bar slider.
     * @js NA
     */
    const Rect& getCapInsetsProgressBarRenderer()const;
    
    /**
     * Load textures for slider ball.
     *
     * @param normal     Normal state texture.
     * @param pressed    Pressed state texture.
     * @param disabled    Disabled state texture.
     * @param texType    @see TextureResType .
     */
    void loadSlidBallTextures(const std::string& normal,
                              const std::string& pressed = "",
                              const std::string& disabled = "",
                              TextureResType texType = TextureResType::LOCAL);
    
    /**
     * Load normal state texture for slider ball.
     *
     * @param normal    Normal state texture.
     * @param resType    @see TextureResType .
     */
    void loadSlidBallTextureNormal(const std::string& normal,TextureResType resType = TextureResType::LOCAL);
    
    /**
     * Load pressed state texture for slider ball.
     *
     * @param pressed    Pressed state texture.
     * @param resType    @see TextureResType .
     */
    void loadSlidBallTexturePressed(const std::string& pressed,TextureResType resType = TextureResType::LOCAL);
    
    /**
     * Load disabled state texture for slider ball.
     *
     * @param disabled   Disabled state texture.
     * @param resType    @see TextureResType .
     */
    void loadSlidBallTextureDisabled(const std::string& disabled,TextureResType resType = TextureResType::LOCAL);
    
    /**
     * Load dark state texture for slider progress bar.
     *
     * @param fileName   File path of texture.
     * @param resType    @see TextureResType .
     */
    void loadProgressBarTexture(const std::string& fileName, TextureResType resType = TextureResType::LOCAL);
    
    /**
     * Changes the progress direction of slider.
     * @param percent  Percent value from 1 to 100.
     */
    void setPercent(int percent);
    
    /**
     * Gets the progress direction of slider.
     *
     * @return percent Percent value from 1 to 100.
     */
    int getPercent()const;

    /**
     * Set a large value could give more control to the precision.
     * @since v3.7
     * @param percent The max percent of Slider.
     */
    void setMaxPercent(int percent);

    /**
     * Query the maximum percent of Slider. The default value is 100.
     * @since v3.7
     * @return The maximum percent of the Slider.
     */
    int getMaxPercent()const;

    
    CC_DEPRECATED_ATTRIBUTE void addEventListenerSlider(Ref* target,SEL_SlidPercentChangedEvent selector);
    /**
     * Add call back function called when slider's percent has changed to slider.
     *
     * @param callback An given call back function called when slider's percent has changed to slider.
     */
    void addEventListener(const ccSliderCallback& callback);

    virtual bool onTouchBegan(Touch *touch, Event *unusedEvent) override;
    virtual void onTouchMoved(Touch *touch, Event *unusedEvent) override;
    virtual void onTouchEnded(Touch *touch, Event *unusedEvent) override;
    virtual void onTouchCancelled(Touch *touch, Event *unusedEvent) override;
    
    //override "getVirtualRendererSize" method of widget.
    virtual Size getVirtualRendererSize() const override;
    
    //override "getVirtualRenderer" method of widget.
    virtual Node* getVirtualRenderer() override;
    
    //override "ignoreContentAdaptWithSize" method of widget.
    virtual void ignoreContentAdaptWithSize(bool ignore) override;
    
    //override the widget's hitTest function to perform its own
    virtual bool hitTest(const Vec2 &pt, const Camera* camera, Vec3 *p) const override;
    /**
     * Returns the "class name" of widget.
     */
    virtual std::string getDescription() const override;
    
    /** When user pressed the button, the button will zoom to a scale.
     * The final scale of the button  equals (button original scale + _zoomScale)
     * @since v3.3
     */
    void setZoomScale(float scale);
    /**
     * @brief Return a zoom scale
     * @since v3.3
     */
    float getZoomScale()const;

    Sprite* getSlidBallNormalRenderer() const;
    Sprite* getSlidBallPressedRenderer() const;
    Sprite* getSlidBallDisabledRenderer() const;
    Node* getSlidBallRenderer() const;

    ResourceData getBackFile();
    ResourceData getProgressBarFile();
    ResourceData getBallNormalFile();
    ResourceData getBallPressedFile();
    ResourceData getBallDisabledFile();

CC_CONSTRUCTOR_ACCESS:
    virtual bool init() override;

protected:
    virtual void initRenderer() override;
    float getPercentWithBallPos(const Vec2 &pt) const;
    void percentChangedEvent(EventType event);
    virtual void onPressStateChangedToNormal() override;
    virtual void onPressStateChangedToPressed() override;
    virtual void onPressStateChangedToDisabled() override;
    virtual void onSizeChanged() override;

    void setupBarTexture();
    void loadBarTexture(SpriteFrame* spriteframe);
    void setupProgressBarTexture();
    void loadProgressBarTexture(SpriteFrame* spriteframe);
    void loadSlidBallTextureNormal(SpriteFrame* spriteframe);
    void loadSlidBallTexturePressed(SpriteFrame* spriteframe);
    void loadSlidBallTextureDisabled(SpriteFrame* spriteframe);
   
    void barRendererScaleChangedWithSize();
    void progressBarRendererScaleChangedWithSize();
    virtual Widget* createCloneInstance() override;
    virtual void copySpecialProperties(Widget* model) override;
    virtual void adaptRenderers() override;
protected:
    Scale9Sprite*  _barRenderer;
    Scale9Sprite* _progressBarRenderer;
    Size _barTextureSize;
    Rect _originalBarRect;
    Size _progressBarTextureSize;
    Rect _originalProgressBarRect;
    
    Sprite* _slidBallNormalRenderer;
    Sprite* _slidBallPressedRenderer;
    Sprite* _slidBallDisabledRenderer;
    Node* _slidBallRenderer;
    
    float _barLength;
    int _percent;
    int _maxPercent;
    
    bool _scale9Enabled;
    bool _prevIgnoreSize;
    
    float _zoomScale;
    float _sliderBallNormalTextureScaleX;
    float _sliderBallNormalTextureScaleY;

    bool _isSliderBallPressedTextureLoaded;
    bool _isSliderBallDisabledTexturedLoaded;

    Rect _capInsetsBarRenderer;
    Rect _capInsetsProgressBarRenderer;

    Ref*       _sliderEventListener;
#if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#elif _MSC_VER >= 1400 //vs 2005 or higher
#pragma warning (push)
#pragma warning (disable: 4996)
#endif
    SEL_SlidPercentChangedEvent    _sliderEventSelector;
#if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
#pragma GCC diagnostic warning "-Wdeprecated-declarations"
#elif _MSC_VER >= 1400 //vs 2005 or higher
#pragma warning (pop)
#endif
    
    ccSliderCallback  _eventCallback;

    TextureResType _barTexType;
    TextureResType _progressBarTexType;
    TextureResType _ballNTexType;
    TextureResType _ballPTexType;
    TextureResType _ballDTexType;
    bool _barRendererAdaptDirty;
    bool _progressBarRendererDirty;

    std::string _textureFile;
    std::string _progressBarTextureFile;
    std::string _slidBallNormalTextureFile;
    std::string _slidBallPressedTextureFile;
    std::string _slidBallDisabledTextureFile;
};

}

// end of ui group
/// @}

NS_CC_END

#endif /* defined(__CocoGUI__Slider__) */