本文地址：
http://m.shnenglu.com/zdhsoft/archive/2014/07/25/207805.html用CCLabelTTF顯示的數字不好看，于是就想到用圖片來代理。目前網上的實現都是把每個數字做一個CCSprite組合的方式。但是我想，動態生成紋理的方式。沒有就只好自己手動寫一個。
頭文件
#ifndef _X_NUMBER_H_
#define _X_NUMBER_H_
#include <cocos2d.h>
#include <xtype.h>
namespace cocos2d
{
//基于圖片顯示的數字
/*
這個類不是用一個一個數字拼起來，而是渲染成一個獨立的紋理
zdh::XDDWord是一個64位無符號整數
*/
class CCPictureNumber : public CCSprite
{
public:
typedef CCSprite Inherited;
public:
CCPictureNumber();
~CCPictureNumber();
virtual bool init(void);
int BuildNumber(zdh::XDDWord paramNumber, const char * paramNumberResName);
int BuildNumber(zdh::XDDWord paramNumber, CCTexture2D * paramTexture);
int BuildNumber(zdh::XDDWord paramNumber);
CREATE_FUNC(CCPictureNumber);
void setNumberTexture(CCTexture2D * paramTexture);
void setNumberTexture(const char * paramNumberResName);
CCTexture2D * getNumberTexture();
zdh::XDDWord getNumber() const;
void setNumber(zdh::XDDWord paramNumber);
int Build();
private:
CCTexture2D * m_NumberTexture;
zdh::XDDWord m_Number;
};
}
#endif
源文件
#include "xpicture_number.h"
#include <xstring.h>
namespace cocos2d
{
//--------------------------------------------------------------------------------------
//從指定資源名稱構建
int CCPictureNumber::BuildNumber(zdh::XDDWord paramNumber, const char * paramNumberResName)
{
this->setNumber(paramNumber);
this->setNumberTexture(CCTextureCache::sharedTextureCache()->addImage(paramNumberResName));
return this->Build();
}
//--------------------------------------------------------------------------------------
//從指定紋理構建
int CCPictureNumber::BuildNumber(zdh::XDDWord paramNumber, CCTexture2D * paramTexture)
{
this->setNumber(paramNumber);
this->setNumberTexture(paramTexture);
return this->Build();
}
//--------------------------------------------------------------------------------------
int CCPictureNumber::BuildNumber(zdh::XDDWord paramNumber)
{
this->setNumber(paramNumber);
return this->Build();
}
//--------------------------------------------------------------------------------------
bool CCPictureNumber::init(void)
{
if (!Inherited::init()) return false;
return true;
}
//--------------------------------------------------------------------------------------
CCPictureNumber::CCPictureNumber()
{
m_NumberTexture = nullptr;
m_Number = 0;
}
//--------------------------------------------------------------------------------------
CCPictureNumber::~CCPictureNumber()
{
if (zdh::isNotNULL(m_NumberTexture))
{
m_NumberTexture->release();
}
}
//--------------------------------------------------------------------------------------
void CCPictureNumber::setNumberTexture(CCTexture2D * paramTexture)
{
if (m_NumberTexture == paramTexture) return;
if (zdh::isNotNULL(m_NumberTexture))
{
m_NumberTexture->release();
}
m_NumberTexture = paramTexture;
if (zdh::isNotNULL(m_NumberTexture))
{
m_NumberTexture->retain();
}
}
//--------------------------------------------------------------------------------------
void CCPictureNumber::setNumberTexture(const char * paramNumberResName)
{
this->setNumberTexture(CCTextureCache::sharedTextureCache()->addImage(paramNumberResName));
}
//--------------------------------------------------------------------------------------
CCTexture2D * CCPictureNumber::getNumberTexture()
{
return m_NumberTexture;
}
//--------------------------------------------------------------------------------------
int CCPictureNumber::Build()
{
if (zdh::isNULL(m_NumberTexture)) return zdh::ERR_FAIL;
zdh::XAnsiString strNumber(m_Number); //將整數轉換為字符串
int iNumCount = strNumber.getLength(); //取得字符個數
CCSize stSize = m_NumberTexture->getContentSize(); //取得紋理大小，要求紋理中每個數字都是等寬等高，并依照0123456789排列
int iNumWidth = (int)stSize.width / 10; //紋理中每個數字的寬度
int iNumHeight = (int)stSize.height; //紋理中每個數字的高度
CCRenderTexture * pRT = CCRenderTexture::create(iNumWidth * iNumCount, iNumHeight); //創建渲染紋理對象，并數字確定寬度
CCSprite * pSprite = CCSprite::create(); //創建精靈對象，用于繪制數字
pSprite->setAnchorPoint(0, 0);
pSprite->setTexture(m_NumberTexture);
CCRect stRect;
pRT->begin();
for (int i = 0; i < iNumCount; i++)
{
int iNumber = strNumber[i] - '0';
//設置要顯示數字的紋理區域，這個區域是指參數中paramTexture中區域
stRect.setRect(iNumber * iNumWidth, 0, iNumWidth, iNumHeight);
pSprite->setTextureRect(stRect, false, stRect.size);
pSprite->setPosition(i * iNumWidth, 0); //計算顯示的偏移位置
pSprite->visit(); //渲染到pRT中
}
pRT->end();
//取得生成的紋理
this->setTexture(pRT->getSprite()->getTexture());
//設置顯示的內容
stRect.setRect(0, 0, iNumWidth * iNumCount, iNumHeight);
this->setTextureRect(stRect, false, stRect.size);
//默認的情況下，通過CCRenderTexture得到的紋理是倒立的，這里需要做一下翻轉
this->setFlipY(true);
//釋放資源
delete pSprite;
delete pRT;
return zdh::ERR_OK;
}
//--------------------------------------------------------------------------------------
zdh::XDDWord CCPictureNumber::getNumber() const
{
return m_Number;
}
//--------------------------------------------------------------------------------------
void CCPictureNumber::setNumber(zdh::XDDWord paramNumber)
{
m_Number = paramNumber;
}
}
數字圖片文件
使用例子
CCPictureNumber * pNum = CCPictureNumber::create();
pNum->BuildNumber(1234567, "ui_play_num05.png");
pNum->setPosition(200, 200);
pNum->setAnchorPoint(0, 0);
this->addChild(pNum, 100);
//