axmol/cocos/ui/UIRichText.h

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#ifndef __UIRICHTEXT_H__
#define __UIRICHTEXT_H__

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

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

namespace ui {
    
/**
 *@brief Rich text element base class.
 * It defines the basic common properties for all rich text element.
 */
class CC_GUI_DLL RichElement : public Ref
{
public:
    /**
     *@brief Rich element type.
     */
    enum class Type
    {
        TEXT,
        IMAGE,
        CUSTOM
    };
    
    /**
     * @brief Default constructor.
     */
    RichElement(){};
    
    /**
     * @brief Default destructor.
     */
    virtual ~RichElement(){};

    
    /**
     * @brief Initialize a rich element with different arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in @see `Color3B`.
     * @param opacity A opacity value in `GLubyte`.
     * @return True if initialize success, false otherwise.
     */
    bool init(int tag, const Color3B& color, GLubyte opacity);
protected:
    Type _type;
    int _tag;
    Color3B _color;
    GLubyte _opacity;
    friend class RichText;
};
    
/**
 *@brief Rich element for displaying text.
 */
class CC_GUI_DLL RichElementText : public RichElement
{
public:
    
    /**
     *@brief Default constructor.
     */
    RichElementText(){_type = Type::TEXT;};

    
    /**
     *@brief Default destructor.
     */
    virtual ~RichElementText(){};
    
    /**
     * @brief Initialize a RichElementText with various arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in Color3B.
     * @param opacity A opacity in GLubyte.
     * @param text Content string.
     * @param fontName Content font name.
     * @param fontSize Content font size.
     * @return True if initialize scucess, false otherwise.
     */
    bool init(int tag, const Color3B& color, GLubyte opacity, const std::string& text, const std::string& fontName, float fontSize);

    
    /**
     * @brief Create a RichElementText with various arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in Color3B.
     * @param opacity A opacity in GLubyte.
     * @param text Content string.
     * @param fontName Content font name.
     * @param fontSize Content font size.
     * @return RichElementText instance.
     */
    static RichElementText* create(int tag, const Color3B& color, GLubyte opacity, const std::string& text, const std::string& fontName, float fontSize);
protected:
    std::string _text;
    std::string _fontName;
    float _fontSize;
    friend class RichText;
    
};
    
/**
 *@brief Rich element for displaying images.
 */
class CC_GUI_DLL RichElementImage : public RichElement
{
public:
    
    /**
     * @brief Default constructor.
     *
     */
    RichElementImage(){_type = Type::IMAGE;};

    
    /**
     * @brief Default destructor.
     */
    virtual ~RichElementImage(){};

    
    /**
     * @brief Initialize a RichElementImage with various arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in Color3B.
     * @param opacity A opacity in GLubyte.
     * @param filePath A image file name.
     * @return True if initialize success, false otherwise.
     */
    bool init(int tag, const Color3B& color, GLubyte opacity, const std::string& filePath);

    
    /**
     * @brief Create a RichElementImage with various arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in Color3B.
     * @param opacity A opacity in GLubyte.
     * @param filePath A image file name.
     * @return A RichElementImage instance.
     */
    static RichElementImage* create(int tag, const Color3B& color, GLubyte opacity, const std::string& filePath);
protected:
    std::string _filePath;
    Rect _textureRect;
    int _textureType;
    friend class RichText;
};
    
/**
 *@brief Rich element for displaying custom node type.
 */
class CC_GUI_DLL RichElementCustomNode : public RichElement
{
public:
    
    /**
     * @brief Default constructor.
     */
    RichElementCustomNode(){_type = Type::CUSTOM;};

    
    /**
     * @brief Default destructor.
     */
    virtual ~RichElementCustomNode(){CC_SAFE_RELEASE(_customNode);};

    
    /**
     * @brief Initialize a RichElementCustomNode with various arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in Color3B.
     * @param opacity A opacity in GLubyte.
     * @param customNode A custom node pointer.
     * @return True if initialize success, false otherwise.
     */
    bool init(int tag, const Color3B& color, GLubyte opacity, Node* customNode);
    
    /**
     * @brief Create a RichElementCustomNode with various arguments.
     *
     * @param tag A integer tag value.
     * @param color A color in Color3B.
     * @param opacity A opacity in GLubyte.
     * @param customNode A custom node pointer.
     * @return A RichElementCustomNode instance.
     */
    static RichElementCustomNode* create(int tag, const Color3B& color, GLubyte opacity, Node* customNode);
protected:
    Node* _customNode;
    friend class RichText;
};
    
/**
 *@brief A container for displaying various RichElements.
 * We could use it to display texts with images easily.
 */
class CC_GUI_DLL RichText : public Widget
{
public:
    
    /**
     * @brief Default constructor.
     */
    RichText();
    
    /**
     * @brief Default destructor.
     */
    virtual ~RichText();
    
    /**
     * @brief Create a empty RichText.
     *
     * @return RichText instance.
     */
    static RichText* create();
    
    /**
     * @brief Insert a RichElement at a given index.
     *
     * @param element A RichElement type.
     * @param index A given index.
     */
    void insertElement(RichElement* element, int index);
    
    /**
     * @brief Add a RichElement at the end of RichText.
     *
     * @param element A RichElement instance.
     */
    void pushBackElement(RichElement* element);
    
    /**
     * @brief Remove a RichElement at a given index.
     *
     * @param index A integer index value.
     */
    void removeElement(int index);
    
    /**
     * @brief Remove specific RichElement.
     *
     * @param element A RichElement type.
     */
    void removeElement(RichElement* element);
    
    /**
     * @brief Set vertical space between each RichElement.
     *
     * @param space Point in float.
     */
    void setVerticalSpace(float space);
    
    /**
     * @brief Rearrange all RichElement in the RichText.
     * It's usually called internally.
     */
    void formatText();

    //override functions.
    virtual void setAnchorPoint(const Vec2 &pt) override;
    virtual Size getVirtualRendererSize() const override;
    virtual void ignoreContentAdaptWithSize(bool ignore) override;
    virtual std::string getDescription() const override;
    
CC_CONSTRUCTOR_ACCESS:
    virtual bool init() override;
    
protected:
    virtual void adaptRenderers() override;

    virtual void initRenderer() override;
    void pushToContainer(Node* renderer);
    void handleTextRenderer(const std::string& text, const std::string& fontName, float fontSize, const Color3B& color, GLubyte opacity);
    void handleImageRenderer(const std::string& fileParh, const Color3B& color, GLubyte opacity);
    void handleCustomRenderer(Node* renderer);
    void formarRenderers();
    void addNewLine();
protected:
    bool _formatTextDirty;
    Vector<RichElement*> _richElements;
    std::vector<Vector<Node*>*> _elementRenders;
    float _leftSpaceWidth;
    float _verticalSpace;
    Node* _elementRenderersContainer;
};
    
}

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

#endif /* defined(__UIRichText__) */