axmol/cocos2dx/text_input_node/CCTextFieldTTF.h

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#ifndef __CC_TEXT_FIELD_H__
#define __CC_TEXT_FIELD_H__

#include "label_nodes/CCLabelTTF.h"
#include "text_input_node/CCIMEDelegate.h"
#include "touch_dispatcher/CCTouchDelegateProtocol.h"

NS_CC_BEGIN

class CCTextFieldTTF;

/**
 * @addtogroup input
 * @{
 */

class CC_DLL CCTextFieldDelegate
{
public:
    /**
    @brief    If the sender doesn't want to attach to the IME, return true;
    */
    virtual bool onTextFieldAttachWithIME(CCTextFieldTTF * sender)
    { 
        CC_UNUSED_PARAM(sender);
        return false;
    }

    /**
    @brief    If the sender doesn't want to detach from the IME, return true;
    */
    virtual bool onTextFieldDetachWithIME(CCTextFieldTTF * sender)
    {
        CC_UNUSED_PARAM(sender);
        return false;
    }

    /**
    @brief    If the sender doesn't want to insert the text, return true;
    */
    virtual bool onTextFieldInsertText(CCTextFieldTTF * sender, const char * text, int nLen)
    {
        CC_UNUSED_PARAM(sender);
        CC_UNUSED_PARAM(text);
        CC_UNUSED_PARAM(nLen);
        return false;
    }

    /**
    @brief    If the sender doesn't want to delete the delText, return true;
    */
    virtual bool onTextFieldDeleteBackward(CCTextFieldTTF * sender, const char * delText, int nLen)
    {
        CC_UNUSED_PARAM(sender);
        CC_UNUSED_PARAM(delText);
        CC_UNUSED_PARAM(nLen);
        return false;
    }

    /**
    @brief    If the sender doesn't want to draw, return true.
    */
    virtual bool onDraw(CCTextFieldTTF * sender)
    {
        CC_UNUSED_PARAM(sender);
        return false;
    }
};

/**
@brief    A simple text input field with TTF font.
*/
class CC_DLL CCTextFieldTTF : public CCLabelTTF, public CCIMEDelegate
{
public:
    CCTextFieldTTF();
    virtual ~CCTextFieldTTF();

    //char * description();

    /** creates a CCTextFieldTTF from a fontname, alignment, dimension and font size */
    static CCTextFieldTTF * textFieldWithPlaceHolder(const char *placeholder, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize);
    /** creates a CCLabelTTF from a fontname and font size */
    static CCTextFieldTTF * textFieldWithPlaceHolder(const char *placeholder, const char *fontName, float fontSize);
    /** initializes the CCTextFieldTTF with a font name, alignment, dimension and font size */
    bool initWithPlaceHolder(const char *placeholder, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize);
    /** initializes the CCTextFieldTTF with a font name and font size */
    bool initWithPlaceHolder(const char *placeholder, const char *fontName, float fontSize);

    /**
    @brief    Open keyboard and receive input text.
    */
    virtual bool attachWithIME();

    /**
    @brief    End text input and close keyboard.
    */
    virtual bool detachWithIME();

    //////////////////////////////////////////////////////////////////////////
    // properties
    //////////////////////////////////////////////////////////////////////////
    
    CC_SYNTHESIZE(CCTextFieldDelegate *, m_pDelegate, Delegate);
    CC_SYNTHESIZE_READONLY(int, m_nCharCount, CharCount);
    virtual ccColor3B getColorSpaceHolder();
    virtual void setColorSpaceHolder(const ccColor3B& color);

    // input text property
public:
    virtual void setString(const char *text);
    virtual const char* getString(void);
protected:
    std::string * m_pInputText;

    // place holder text property
    // place holder text displayed when there is no text in the text field.
public:
    virtual void setPlaceHolder(const char * text);
    virtual const char * getPlaceHolder(void);
protected:
    std::string * m_pPlaceHolder;
    ccColor3B m_ColorSpaceHolder;
protected:

    virtual void draw();

    //////////////////////////////////////////////////////////////////////////
    // CCIMEDelegate interface
    //////////////////////////////////////////////////////////////////////////

    virtual bool canAttachWithIME();
    virtual bool canDetachWithIME();
    virtual void insertText(const char * text, int len);
    virtual void deleteBackward();
    virtual const char * getContentText();
private:
    class LengthStack;
    LengthStack * m_pLens;
};

// end of input group
/// @}

NS_CC_END

#endif    // __CC_TEXT_FIELD_H__