axmol/cocos/ui/UIButton.h

/****************************************************************************
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
of this software and associated documentation files (the "Software"), to deal
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#ifndef __UIBUTTON_H__
#define __UIBUTTON_H__

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

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

class Label;
class SpriteFrame;

namespace ui{

    class Scale9Sprite;
/**
 * Represents a push-button widget.
 * Push-buttons can be pressed, or clicked, by the user to perform an action.
 */
class CC_GUI_DLL Button : public Widget
{

    DECLARE_CLASS_GUI_INFO

public:

    /**
     * Default constructor.
     */
    Button();

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

    /**
     * Create a empty Button.
     *@return A empty Button instance.
     */
    static Button* create();

    /**
     * Create a button with custom textures.
     * @param normalImage normal state texture name.
     * @param selectedImage  selected state texture name.
     * @param disableImage disabled state texture name.
     * @param texType    @see `TextureResType`
     * @return a Button instance.
     */
    static Button* create(const std::string& normalImage,
                          const std::string& selectedImage = "",
                          const std::string& disableImage = "",
                          TextureResType texType = TextureResType::LOCAL);

    /**
     * Load textures for button.
     *
     * @param normal    normal state texture name.
     * @param selected    selected state texture name.
     * @param disabled    disabled state texture name.
     * @param texType    @see `TextureResType`
     */
    void loadTextures(const std::string& normal,
                      const std::string& selected,
                      const std::string& disabled = "",
                      TextureResType texType = TextureResType::LOCAL);

    /**
     * Load normal state texture for button.
     *
     * @param normal    normal state texture.
     * @param texType    @see `TextureResType`
     */
    void loadTextureNormal(const std::string& normal, TextureResType texType = TextureResType::LOCAL);

    /**
     * Load selected state texture for button.
     *
     * @param selected    selected state texture.
     * @param texType    @see `TextureResType`
     */
    void loadTexturePressed(const std::string& selected, TextureResType texType = TextureResType::LOCAL);

    /**
     * Load disabled state texture for button.
     *
     * @param disabled    dark state texture.
     * @param texType    @see `TextureResType`
     */
    void loadTextureDisabled(const std::string& disabled, TextureResType texType = TextureResType::LOCAL);

    /**
     * Sets capInsets for button.
     * The capInset affects  all button scale9 renderer only if `setScale9Enabled(true)` is called
     *
     * @param capInsets    capInset in Rect.
     */
    void setCapInsets(const Rect &capInsets);

    /**
     * Sets capInsets for button, only the normal state scale9 renderer will be affected.
     *
     * @param capInsets    capInsets in Rect.
     */
    void setCapInsetsNormalRenderer(const Rect &capInsets);

    /**
     * Return the capInsets of normal state scale9sprite.
     *@return The normal scale9 renderer capInsets.
     */
    const Rect& getCapInsetsNormalRenderer()const;

    /**
     * Sets capInsets for button, only the pressed state scale9 renderer will be affected.
     *
     * @param capInsets    capInsets in Rect
     */
    void setCapInsetsPressedRenderer(const Rect &capInsets);

    /**
     * Return the capInsets of pressed state scale9sprite.
     *@return The pressed scale9 renderer capInsets.
     */
    const Rect& getCapInsetsPressedRenderer()const;

    /**
     * Sets capInsets for button, only the disabled state scale9 renderer will be affected.
     *
     * @param capInsets  capInsets in Rect.
     */
    void setCapInsetsDisabledRenderer(const Rect &capInsets);

    /**
     * Return the capInsets of disabled state scale9sprite.
     *@return The disabled scale9 renderer capInsets.
     */
    const Rect& getCapInsetsDisabledRenderer()const;

    /**
     * Enable scale9 renderer.
     *
     * @param enable Set to true will use scale9 renderer, false otherwise.
     */
    virtual void setScale9Enabled(bool enable);

    /**
     * Query whether button is using scale9 renderer or not.
     *@return whether button use scale9 renderer or not.
     */
    bool isScale9Enabled()const;

    /**
     * Enable zooming action when button is pressed.
     *
     * @param enabled Set to true will enable zoom effect, false otherwise.
     */
    void setPressedActionEnabled(bool enabled);

    //override methods
    virtual void ignoreContentAdaptWithSize(bool ignore) override;
    virtual Size getVirtualRendererSize() const override;
    virtual Node* getVirtualRenderer() override;
    virtual std::string getDescription() const override;

    /**
     * Return the inner title renderer of Button.
     * @return The button title.
     * @since v3.3
     */
    Label* getTitleRenderer()const;

    /**
     * Change the content of button's title.
     *@param text The title in std::string.
     */
    void setTitleText(const std::string& text);

    /**
     * Query the button title content.
     *@return Get the button's title content.
     */
    const std::string getTitleText() const;

    /**
     * Change the color of button's title.
     *@param color The title color in Color3B.
     */
    void setTitleColor(const Color3B& color);

    /**
     * Query the button title color.
     *@return Color3B of button title.
     */
    Color3B getTitleColor() const;

    /**
     * Change the font size of button's title
     *@param size Title font size in float.
     */
    void setTitleFontSize(float size);

    /**
     * Query the font size of button title
     *@return font size in float.
     */
    float getTitleFontSize() const;

    /**
     * Change the font name of button's title
     *@param fontName a font name string.
     */
    void setTitleFontName(const std::string& fontName);

    /**
     * Query the font name of button's title
     *@return font name in std::string
     */
    const std::string getTitleFontName() const;

    /**
     * Sets the title's text horizontal alignment.
     *
     * @param hAlignment see TextHAlignment
     */
    void setTitleAlignment(TextHAlignment hAlignment);

    /**
     * Sets the title's text vertical alignment.
     *
     * @param hAlignment see TextHAlignment.
     * @param vAlignment see TextVAlignment.
     */
    void setTitleAlignment(TextHAlignment hAlignment, TextVAlignment vAlignment);

    /** @brief 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
     * @return the zoom scale in float
     * @since v3.3
     */
    float getZoomScale()const;
    
    /**
     * @brief Return the nine-patch sprite of normal state
     * @return the nine-patch sprite of normal state
     * @since v3.9
     */
    Scale9Sprite* getRendererNormal() const { return _buttonNormalRenderer; }
    
    /**
     * @brief Return the nine-patch sprite of clicked state
     * @return the nine-patch sprite of clicked state
     * @since v3.9
     */
    Scale9Sprite* getRendererClicked() const { return _buttonClickedRenderer; }
    
    /**
     * @brief Return the nine-patch sprite of disabled state
     * @return the nine-patch sprite of disabled state
     * @since v3.9
     */
    Scale9Sprite* getRendererDisabled() const { return _buttonDisabledRenderer; }

CC_CONSTRUCTOR_ACCESS:
    virtual bool init() override;
    virtual bool init(const std::string& normalImage,
                      const std::string& selectedImage = "",
                      const std::string& disableImage = "",
                      TextureResType texType = TextureResType::LOCAL);

    virtual Size getNormalTextureSize() const;

protected:
    virtual void initRenderer() override;
    virtual void onPressStateChangedToNormal() override;
    virtual void onPressStateChangedToPressed() override;
    virtual void onPressStateChangedToDisabled() override;
    virtual void onSizeChanged() override;

    void loadTextureNormal(SpriteFrame* normalSpriteFrame);
    void setupNormalTexture();
    void loadTexturePressed(SpriteFrame* pressedSpriteFrame);
    void setupPressedTexture();
    void loadTextureDisabled(SpriteFrame* disabledSpriteFrame);
    void setupDisabledTexture();

    void normalTextureScaleChangedWithSize();
    void pressedTextureScaleChangedWithSize();
    void disabledTextureScaleChangedWithSize();

    virtual void adaptRenderers() override;
    void updateTitleLocation();
    void updateContentSize();
    void createTitleRenderer();

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

    virtual Size getNormalSize() const;
protected:
    Scale9Sprite* _buttonNormalRenderer;
    Scale9Sprite* _buttonClickedRenderer;
    Scale9Sprite* _buttonDisabledRenderer;
    Label* _titleRenderer;

    float _zoomScale;
    bool _prevIgnoreSize;
    bool _scale9Enabled;
    bool _pressedActionEnabled;

    Rect _capInsetsNormal;
    Rect _capInsetsPressed;
    Rect _capInsetsDisabled;

    Size _normalTextureSize;
    Size _pressedTextureSize;
    Size _disabledTextureSize;

    float _normalTextureScaleXInSize;
    float _normalTextureScaleYInSize;
    float _pressedTextureScaleXInSize;
    float _pressedTextureScaleYInSize;

    bool _normalTextureLoaded;
    bool _pressedTextureLoaded;
    bool _disabledTextureLoaded;
    bool _normalTextureAdaptDirty;
    bool _pressedTextureAdaptDirty;
    bool _disabledTextureAdaptDirty;

private:
    enum class FontType
    {
        SYSTEM,
        TTF,
        BMFONT
    };

    int _fontSize;
    FontType _type;
};

}

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

#endif /* defined(__CocoGUI__Button__) */