axmol/cocos/2d/CCLabelTTF.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2008-2010 Ricardo Quesada

http://www.cocos2d-x.org

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****************************************************************************/
#ifndef __CCLABELTTF_H__
#define __CCLABELTTF_H__

#include "CCTexture2D.h"
#include "CCSprite.h"

NS_CC_BEGIN

/**
 * @addtogroup GUI
 * @{
 * @addtogroup label
 * @{
 */



/** @brief LabelTTF is a subclass of TextureNode that knows how to render text labels
 *
 * All features from TextureNode are valid in LabelTTF
 *
 * LabelTTF objects are slow. Consider using LabelAtlas or LabelBMFont instead.
 *
 * Custom ttf file can be put in assets/ or external storage that the Application can access.
 * @code
 * LabelTTF *label1 = LabelTTF::create("alignment left", "A Damn Mess", fontSize, blockSize, 
 *                                          TextHAlignment::LEFT, TextVAlignment::CENTER);
 * LabelTTF *label2 = LabelTTF::create("alignment right", "/mnt/sdcard/Scissor Cuts.ttf", fontSize, blockSize,
 *                                          TextHAlignment::LEFT, TextVAlignment::CENTER);
 * @endcode
 *
 */
class CC_DLL LabelTTF : public Sprite, public LabelProtocol
{
public:
    /**
     * @js ctor
     */
    LabelTTF();
    /**
     * @js NA
     * @lua NA
     */
    virtual ~LabelTTF();

    /** creates a LabelTTF with a font name and font size in points
     @since v2.0.1
     */
    static LabelTTF * create(const std::string& string, const std::string& fontName, float fontSize);
    
    /** creates a LabelTTF from a fontname, horizontal alignment, dimension in points,  and font size in points.
     @since v2.0.1
     */
    static LabelTTF * create(const std::string& string, const std::string& fontName, float fontSize,
                             const Size& dimensions, TextHAlignment hAlignment);
  
    /** creates a Label from a fontname, alignment, dimension in points and font size in points
     @since v2.0.1
     */
    static LabelTTF * create(const std::string& string, const std::string& fontName, float fontSize,
                             const Size& dimensions, TextHAlignment hAlignment,
                             TextVAlignment vAlignment);
    
    
    /** Create a lable with string and a font definition*/
    static LabelTTF * createWithFontDefinition(const std::string& string, FontDefinition &textDefinition);
    
    /** initializes the LabelTTF with a font name and font size */
    bool initWithString(const std::string& string, const std::string& fontName, float fontSize);
    
    /** initializes the LabelTTF with a font name, alignment, dimension and font size */
    bool initWithString(const std::string& string, const std::string& fontName, float fontSize,
                        const Size& dimensions, TextHAlignment hAlignment);

    /** initializes the LabelTTF with a font name, alignment, dimension and font size */
    bool initWithString(const std::string& string, const std::string& fontName, float fontSize,
                        const Size& dimensions, TextHAlignment hAlignment, 
                        TextVAlignment vAlignment);
    
    /** initializes the LabelTTF with a font name, alignment, dimension and font size */
    bool initWithStringAndTextDefinition(const std::string& string, FontDefinition &textDefinition);
    
    /** set the text definition used by this label */
    void setTextDefinition(const FontDefinition& theDefinition);
    
    /** get the text definition used by this label */
    FontDefinition getTextDefinition();
    
    
    
    /** enable or disable shadow for the label */
    void enableShadow(const Size &shadowOffset, float shadowOpacity, float shadowBlur, bool mustUpdateTexture = true);
    
    /** disable shadow rendering */
    void disableShadow(bool mustUpdateTexture = true);
    
    /** enable or disable stroke */
    void enableStroke(const Color3B &strokeColor, float strokeSize, bool mustUpdateTexture = true);
    
    /** disable stroke */
    void disableStroke(bool mustUpdateTexture = true);
    
    /** set text tinting */
    void setFontFillColor(const Color3B &tintColor, bool mustUpdateTexture = true);

    
    
    /** initializes the LabelTTF */
    bool init();

    /** Creates an label.
     */
    static LabelTTF * create();

    /** changes the string to render
    * @warning Changing the string is as expensive as creating a new LabelTTF. To obtain better performance use LabelAtlas
    */
    virtual void setString(const std::string &label) override;
    virtual const std::string& getString(void) const override;
    
    TextHAlignment getHorizontalAlignment() const;
    void setHorizontalAlignment(TextHAlignment alignment);
    
    TextVAlignment getVerticalAlignment() const;
    void setVerticalAlignment(TextVAlignment verticalAlignment);
    
    const Size& getDimensions() const;
    void setDimensions(const Size &dim);
    
    float getFontSize() const;
    void setFontSize(float fontSize);
    
    const std::string& getFontName() const;
    void setFontName(const std::string& fontName);

    /**
     * @js NA
     * @lua NA
     */
    virtual std::string getDescription() const override;

protected:
    bool updateTexture();

    /** set the text definition for this label */
    void _updateWithTextDefinition(const FontDefinition& textDefinition, bool mustUpdateTexture = true);
    FontDefinition    _prepareTextDefinition(bool adjustForResolution = false);
    
    /** Dimensions of the label in Points */
    Size _dimensions;
    /** The alignment of the label */
    TextHAlignment         _alignment;
    /** The vertical alignment of the label */
    TextVAlignment _vAlignment;
    /** Font name used in the label */
    std::string _fontName;
    /** Font size of the label */
    float _fontSize;
    /** label's string */
    std::string _string;
    
    /** font shadow */
    bool    _shadowEnabled;
    Size    _shadowOffset;
    float   _shadowOpacity;
    float   _shadowBlur;
    
    
    /** font stroke */
    bool        _strokeEnabled;
    Color3B     _strokeColor;
    float       _strokeSize;
        
    /** font tint */
    Color3B   _textFillColor;
};


// end of GUI group
/// @}
/// @}

NS_CC_END

#endif //__CCLABEL_H__