向左推进并计数的 cocos2d-x 平台的TextField（附源代码）

 

向左推进并计数的 cocos2d-x 平台的TextField 继承CCTextField

原理其实很简单：但输入文字时，用UTF8 解析输入的字符串，判断字符串长度，并更新计数器，判断字符串显示区域，当大于显示区域，把aglin属性设为right ，否则设为left。看效果图

  由于写的代码适合我自己的功能，因此代码仅用于参考

#ifndef __ETEXTFIELD_H__#define __ETEXTFIELD_H__#include "cocos2d.h"USING_NS_CC;class ETextField:public CCTextFieldTTF,public CCTargetedTouchDelegate{bool m_isPassWord;bool m_isLowSide;//是否在低位bool m_isTouchHandled;//是否被点击到bool m_isTouchedFun;CCObject* m_selectorTarget;float m_keyboardOffset;SEL_CallFunc m_selector;public:ETextField():m_isLowSide(false),m_isTouchHandled(false),m_isPassWord(false),m_isTouchedFun(false),inputStringLengthLimit(-1),m_isMove(false){};//~ETextField(){};static ETextField * ETextFieldWithPlaceHolder(const char *placeholder, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize);//?≤?¨∑Ω∑?static ETextField * ETextFieldWithPlaceHolder(const char *placeholder, const char *fontName, float fontSize);//CCTARGETEDTOUCHDELEGATEvirtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);//CCLAYERvirtual void onEnter();virtual void onExit();//CCLABEL void setDimensions(CCSize rect){m_tDimensions=rect;};//CCTEXTFIELDTTFvirtual void setString(const char *text);void setString(const char *label,CCTextAlignment Alignment);//CCIMEDelegatevirtual void keyboardWillShow(CCIMEKeyboardNotificationInfo& info);virtual void keyboardWillHide(CCIMEKeyboardNotificationInfo& info);void parentLayerUpMove();void parentLayerBackMove();void setIsPassWord(bool display){m_isPassWord=display;};void setTouchedEvent(CCObject* SelectorTarget,SEL_CallFunc selector,bool isTargeted);void touchedEventExecut();virtual void insertText(const char * text, int len);size_t inputStringLengthLimit;size_t getStringLengthLimit() const { return inputStringLengthLimit; }void setStringLengthLimit(size_t val) { inputStringLengthLimit = val; }//caoxinst 20120807bool IsUpdate;bool m_isMove; //是否移动int FieldWidth;//设置显示文本框的宽度CCPoint Front; //是指文本框的居左位置CCPoint Last;  //设置文本框的居右位置   int stringLen ; //字符长度 一个汉字长度为1和 一个英文字符长度为1    int len;  //限制字符串长度CCObject* pSend;void setisMove(bool val) { m_isMove = val; stringLen = 0; len = 0; IsUpdate = false;}void setPsend(CCObject* psend=NULL){ pSend = psend ;}void setStringLen(int n){len = n;}void setFieldWidth(int width){FieldWidth = width;}void setFieldPos(CCPoint front,CCPoint last){ Front = front; Last = last;}void FieldMove(string insertText);void deleteBackward();void setinput(string strs){*m_pInputText = strs;} int flags ; //在win32上 由于像素的误差 进行矫正};#endif

#include "ETextField.h"#include "esun/eutils/ELog.h"#include "cayman2/Format/Format.h"#include "cayman2/AdviceBack/AdviceBack.h"static int _calcCharCount(const char * pszText){int n = 0;char ch = 0;while ((ch = *pszText)){CC_BREAK_IF(! ch);if (0x80 != (0xC0 & ch)){++n;}++pszText;}return n;}bool ETextField::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent){return true;}void ETextField::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){CCPoint  touch =pTouch->locationInView(pTouch->view());touch = CCDirector::sharedDirector()->convertToGL(touch);CCRect rect=this->boundingBox();//CCLog("Origin:(%f,%f) Size:(%f,%f)\n",rect.origin.x,rect.origin.y,rect.size.width,rect.size.height);m_isTouchHandled=CCRect::CCRectContainsPoint(rect, touch);if(m_isTouchHandled){this->attachWithIME();//CCLog("Touched the TEXTFIELD");if(m_isTouchedFun==true)touchedEventExecut();}else{this->detachWithIME();}}ETextField * ETextField::ETextFieldWithPlaceHolder(const char *placeholder, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize){ETextField *pRet = new ETextField();if(pRet && pRet->initWithPlaceHolder("", dimensions, alignment, fontName, fontSize)){pRet->autorelease();if (placeholder){pRet->setPlaceHolder(placeholder);}return pRet;}CC_SAFE_DELETE(pRet);return NULL;}ETextField * ETextField::ETextFieldWithPlaceHolder(const char *placeholder, const char *fontName, float fontSize){ETextField *pRet = new ETextField();if(pRet && pRet->initWithString("", fontName, fontSize)){pRet->autorelease();if (placeholder){pRet->setPlaceHolder(placeholder);}return pRet;}CC_SAFE_DELETE(pRet);return NULL;}void ETextField::onEnter(){CCSize size=CCDirector::sharedDirector()->getWinSize();CCPoint myPos=this->getPosition();CCSize mySize = this->getContentSize();m_keyboardOffset=size.height/2+20;if((myPos.y-mySize.height)<m_keyboardOffset)m_isLowSide=true;    flags = 0;CCTouchDispatcher::sharedDispatcher()->addTargetedDelegate(this,-100,false);}void ETextField::onExit(){CCTouchDispatcher::sharedDispatcher()->removeDelegate(this);this->detachWithIME();m_isTouchedFun=false;}void ETextField::keyboardWillShow(CCIMEKeyboardNotificationInfo& info){//CCLog("keyboardWillShow");if(m_isLowSide&&this->m_isTouchHandled)parentLayerUpMove();}void ETextField::keyboardWillHide(CCIMEKeyboardNotificationInfo& info){//CCLog("keyboardWillHide");if(m_isLowSide)parentLayerBackMove();}void ETextField::parentLayerUpMove(){CCNode*parent= this->getParent();if(parent){parent->stopAllActions();CCSize size = CCDirector::sharedDirector()->getWinSize();CCPoint myPos = this->getPosition();CCMoveTo *move_up=CCMoveTo::actionWithDuration(0.35f,ccp(0,m_keyboardOffset-myPos.y/2));parent->runAction(move_up);}}void ETextField::parentLayerBackMove(){CCNode*parent= this->getParent();if(parent){parent->stopAllActions();CCSize size = CCDirector::sharedDirector()->getWinSize();CCMoveTo *move_up=CCMoveTo::actionWithDuration(0.35f,ccp(0,0));parent->runAction(move_up);}}void ETextField::setString(const char *text){//string str=getString();CC_SAFE_DELETE(m_pInputText);if (text){m_pInputText = new std::string(text);} else {m_pInputText = new std::string;}// if there is no input text, display placeholder insteadif (! m_pInputText->length()){CCLabelTTF::setString(m_pPlaceHolder->c_str());}else if(!m_isPassWord){if(!m_isMove)CCLabelTTF::setString(m_pInputText->c_str());//else//FieldMove(m_pInputText);}else{int len_now=m_pInputText->length();string passWord(len_now,'*');CCLabelTTF::setString(passWord.c_str());}m_nCharCount = _calcCharCount(m_pInputText->c_str());}void ETextField::setString( const char *label,CCTextAlignment Alignment ){if (CCLabelTTF::m_pString){delete CCLabelTTF::m_pString;CCLabelTTF::m_pString = NULL;}CCLabelTTF::m_pString = new std::string(label);CCTexture2D *texture;if( CCSize::CCSizeEqualToSize( CCLabelTTF::m_tDimensions, CCSizeZero ) ){texture = new CCTexture2D();texture->initWithString(label, CCLabelTTF::m_pFontName->c_str(), CCLabelTTF::m_fFontSize);}else{texture = new CCTexture2D();texture->initWithString(label, CCLabelTTF::m_tDimensions, Alignment, CCLabelTTF::m_pFontName->c_str(), CCLabelTTF::m_fFontSize);}this->setTexture(texture);texture->release();CCRect rect = CCRectZero;rect.size = CCLabelTTF::m_pobTexture->getContentSize();this->setTextureRect(rect);}void ETextField::setTouchedEvent(CCObject* SelectorTarget, SEL_CallFunc selector,bool isTargeted){m_selectorTarget=SelectorTarget;m_selector=selector;m_isTouchedFun=isTargeted;}void ETextField::touchedEventExecut(){if (m_selector&&m_isTouchedFun) {(m_selectorTarget->*m_selector)();}}void ETextField::deleteBackward(){string front = getString();CCTextFieldTTF::deleteBackward();if (m_isMove &&(!m_isPassWord)){if(stringLen >=1)stringLen--;string str =getString();CCTexture2D* delet = new CCTexture2D;delet->initWithString(str.c_str(),"",20);#if(CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)int n = front.length() - str.length();if( n>=3)flags-=n/3;if(delet->getContentSize().width - flags*10 < FieldWidth)#elseif(delet->getContentSize().width < FieldWidth)#endif{ this->setPosition(Front); CCLabelTTF::setString(str.c_str());}else{this->setString(str.c_str(),CCTextAlignmentRight);}CC_SAFE_DELETE(delet);if(IsUpdate&& pSend){AdviceBack* tmp =(AdviceBack*)pSend;tmp->upDateCount();}}}void ETextField::insertText( const char * text, int len ){if (getStringLengthLimit()>=0){string str=getString();if(str.size()>=getStringLengthLimit()){return;}}std::string sInsert(text, len);// insert \n means input endint nPos = sInsert.find('\n');if ((int)sInsert.npos != nPos){len = nPos;sInsert.erase(nPos);}if (len > 0){if (m_pDelegate && m_pDelegate->onTextFieldInsertText(this, sInsert.c_str(), len)){// delegate doesn't want insert textreturn;}m_nCharCount += _calcCharCount(sInsert.c_str());if(m_isMove)FieldMove(sInsert);else{std::string sText(*m_pInputText);sText.append(sInsert);setString(sText.c_str());}}if ((int)sInsert.npos == nPos) {return;}// '\n' has inserted,  let delegate process firstif (m_pDelegate && m_pDelegate->onTextFieldInsertText(this, "\n", 1)){return;}// if delegate hasn't process, detach with ime as defaultdetachWithIME();}void ETextField::FieldMove( string insertText){int n = StringFormat::CountUTF8(insertText);if(( stringLen+n ) > len)return ;else{m_pInputText->append(insertText);stringLen = stringLen+n;}//if(IsUpdate&& pSend){  //更新计数器//AdviceBack* tmp =(AdviceBack*)pSend;//tmp->upDateCount(); //}CCTexture2D* test = new CCTexture2D;test->initWithString(m_pInputText->c_str(),"",20);int lens = test->getContentSize().width ;#if(CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)if(insertText.length() >= 3){flags+= insertText.length()/3;}if((lens-flags*12) > FieldWidth)#elseif(lens > FieldWidth)#endif{this->setPosition(Last);this->setString(m_pInputText->c_str(),CCTextAlignmentRight);}elsethis->setString(m_pInputText->c_str(),CCTextAlignmentLeft);CC_SAFE_DELETE(test);}