axmol/cocos/ui/UIAbstractCheckButton.h

/****************************************************************************
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

http://www.cocos2d-x.org

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#ifndef __UIABSTRACTCHECKBUTTON_H__
#define __UIABSTRACTCHECKBUTTON_H__

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

/**
 * @addtogroup ui
 * @{
 */
NS_CC_BEGIN
class Sprite;
struct CC_DLL ResourceData;

namespace ui
{

/**
 *  AbstractCheckButton is a specific type of two-states button that can be either checked or unchecked.
 */
class CC_GUI_DLL AbstractCheckButton : public Widget
{

public:
    /**
     * Load all textures for initializing a check button.
     *
     * @param background    The background image name.
     * @param backgroundSelected    The background selected image name.
     * @param cross    The cross image name.
     * @param backgroundDisabled    The background disabled state texture.
     * @param frontCrossDisabled    The front cross disabled state image name.
     * @param texType    @see `Widget::TextureResType`
     */
    void loadTextures(std::string_view background,
                      std::string_view backgroundSelected,
                      std::string_view cross,
                      std::string_view backgroundDisabled,
                      std::string_view frontCrossDisabled,
                      TextureResType texType = TextureResType::LOCAL);

    /**
     * Load background texture for check button.
     *
     * @param backGround   The background image name.
     * @param type    @see `Widget::TextureResType`
     */
    void loadTextureBackGround(std::string_view backGround, TextureResType type = TextureResType::LOCAL);

    /**
     * Load background selected state texture for check button.
     *
     * @param backGroundSelected    The background selected state image name.
     * @param texType    @see `Widget::TextureResType`
     */
    void loadTextureBackGroundSelected(std::string_view backGroundSelected,
                                       TextureResType texType = TextureResType::LOCAL);

    /**
     * Load cross texture for check button.
     *
     * @param crossTextureName    The cross texture name.
     * @param texType    @see `Widget::TextureResType`
     */
    void loadTextureFrontCross(std::string_view crossTextureName, TextureResType texType = TextureResType::LOCAL);

    /**
     * Load background disabled state texture for checkbox.
     *
     * @param backGroundDisabled    The background disabled state texture name.
     *
     * @param texType    @see `Widget::TextureResType`
     */
    void loadTextureBackGroundDisabled(std::string_view backGroundDisabled,
                                       TextureResType texType = TextureResType::LOCAL);

    /**
     * Load frontcross disabled texture for checkbox.
     *
     * @param frontCrossDisabled    The front cross disabled state texture name.
     * @param texType    @see `Widget::TextureResType`
     */
    void loadTextureFrontCrossDisabled(std::string_view frontCrossDisabled,
                                       TextureResType texType = TextureResType::LOCAL);

    /**
     * Query whether CheckBox is selected or not.
     *@return true means "selected", false otherwise.
     */
    bool isSelected() const;

    /**
     * Change CheckBox state.
     * Set to true will cause the CheckBox's state to "selected", false otherwise.
     *@param selected Set to true will change CheckBox to selected state, false otherwise.
     */
    void setSelected(bool selected);

    // override functions
    virtual Vec2 getVirtualRendererSize() const override;
    virtual Node* getVirtualRenderer() override;

    /** When user pressed the CheckBox, the button will zoom to a scale.
     * The final scale of the CheckBox  equals (CheckBox original scale + _zoomScale)
     * @since v3.3
     */
    void setZoomScale(float scale);
    /**
     * @brief Return a zoom scale
     * @return A zoom scale of Checkbox.
     * @since v3.3
     */
    float getZoomScale() const;

    /**
     * @brief Return the sprite instance of background
     * @return the sprite instance of background.
     */
    Sprite* getRendererBackground() const { return _backGroundBoxRenderer; }

    /**
     * @brief Return the sprite instance of background when selected
     * @return the sprite instance of background when selected
     */
    Sprite* getRendererBackgroundSelected() const { return _backGroundSelectedBoxRenderer; }

    /**
     * @brief Return the sprite instance of front cross
     * @return the sprite instance of front cross
     */
    Sprite* getRendererFrontCross() const { return _frontCrossRenderer; }

    /**
     * @brief Return the sprite instance of background when disabled
     * @return the sprite instance of background when disabled
     */
    Sprite* getRendererBackgroundDisabled() const { return _backGroundBoxDisabledRenderer; }

    /**
     * @brief Return the sprite instance of front cross when disabled
     * @return the sprite instance of front cross when disabled
     */
    Sprite* getRendererFrontCrossDisabled() const { return _frontCrossDisabledRenderer; }

    ResourceData getBackNormalFile();
    ResourceData getBackPressedFile();
    ResourceData getBackDisabledFile();
    ResourceData getCrossNormalFile();
    ResourceData getCrossDisabledFile();

    CC_CONSTRUCTOR_ACCESS : virtual bool init() override;
    virtual bool init(std::string_view backGround,
                      std::string_view backGroundSelected,
                      std::string_view cross,
                      std::string_view backGroundDisabled,
                      std::string_view frontCrossDisabled,
                      TextureResType texType = TextureResType::LOCAL);

protected:
    /**
     * Default constructor.
     */
    AbstractCheckButton();

    /**
     * Default destructor.
     *
     * @lua NA
     */
    virtual ~AbstractCheckButton();

    virtual void initRenderer() override;
    virtual void onPressStateChangedToNormal() override;
    virtual void onPressStateChangedToPressed() override;
    virtual void onPressStateChangedToDisabled() override;

    void setupBackgroundTexture();
    void loadTextureBackGround(SpriteFrame* spriteFrame);
    void setupBackgroundSelectedTexture();
    void loadTextureBackGroundSelected(SpriteFrame* spriteFrame);
    void setupFrontCrossTexture();
    void loadTextureFrontCross(SpriteFrame* spriteframe);
    void setupBackgroundDisable();
    void loadTextureBackGroundDisabled(SpriteFrame* spriteframe);
    void setupFrontCrossDisableTexture();
    void loadTextureFrontCrossDisabled(SpriteFrame* spriteframe);

    virtual void dispatchSelectChangedEvent(bool selected) = 0;

    virtual void onSizeChanged() override;

    void backGroundTextureScaleChangedWithSize();
    void backGroundSelectedTextureScaleChangedWithSize();
    void frontCrossTextureScaleChangedWithSize();
    void backGroundDisabledTextureScaleChangedWithSize();
    void frontCrossDisabledTextureScaleChangedWithSize();

    virtual void copySpecialProperties(Widget* model) override;
    virtual void adaptRenderers() override;

protected:
    Sprite* _backGroundBoxRenderer;
    Sprite* _backGroundSelectedBoxRenderer;
    Sprite* _frontCrossRenderer;
    Sprite* _backGroundBoxDisabledRenderer;
    Sprite* _frontCrossDisabledRenderer;
    bool _isSelected;

    bool _isBackgroundSelectedTextureLoaded;
    bool _isBackgroundDisabledTextureLoaded;
    bool _isFrontCrossDisabledTextureLoaded;
    TextureResType _backGroundTexType;
    TextureResType _backGroundSelectedTexType;
    TextureResType _frontCrossTexType;
    TextureResType _backGroundDisabledTexType;
    TextureResType _frontCrossDisabledTexType;

    float _zoomScale;
    float _backgroundTextureScaleX;
    float _backgroundTextureScaleY;

    bool _backGroundBoxRendererAdaptDirty;
    bool _backGroundSelectedBoxRendererAdaptDirty;
    bool _frontCrossRendererAdaptDirty;
    bool _backGroundBoxDisabledRendererAdaptDirty;
    bool _frontCrossDisabledRendererAdaptDirty;

    std::string _backGroundFileName;
    std::string _backGroundSelectedFileName;
    std::string _frontCrossFileName;
    std::string _backGroundDisabledFileName;
    std::string _frontCrossDisabledFileName;
};

}  // namespace ui

NS_CC_END
// end of ui group
/// @}

#endif /* defined(__UIABSTRACTCHECKBUTTON_H__) */