cocos2d-x freetype2

发布时间：2020-12-14 18:53:12 所属栏目：百科来源：网络整理

导读：cocos2d-x学习日志(16) --富文本 http://blog.csdn.net/rexuefengye/article/details/21120705 最近做聊天系统，遇到棘手的问题，就是字体要支持多颜色、换行、表情（图片）、超链接！我们不会从OpenGL底层来做这个工作，因为那样工作量非常大，不现实，考

cocos2d-x学习日志(16) --富文本

http://blog.csdn.net/rexuefengye/article/details/21120705

最近做聊天系统，遇到棘手的问题，就是字体要支持多颜色、换行、表情（图片）、超链接！我们不会从OpenGL底层来做这个工作，因为那样工作量非常大，不现实，考虑在已有的cocos2d-x接口上进行处理，来组合出我们需要富文本。因Android IOS 似乎都支持 freetype2 ，所以就优先考虑了。

1.下载准备：

freetype2：http://download.savannah.gnu.org/releases/freetype/

扩展库：https://github.com/happykevins/cocos2dx-ext

2.搭建环境

2.1 配置freetype2

2.2.创建工程，添加文件，如下：

工程根目录：

class文件夹：

vs2010工程目录：

3. 代码：

HelloWorldScene.h

[cpp] 
    view plain 
    copy 
     
     
     
    
 #ifndef__HELLOWORLD_SCENE_H__
 #define__HELLOWORLD_SCENE_H__
 
 #include"cocos2d.h"
 #include"cocos-ext.h"
 #include<renren-ext.h>
 USING_NS_CC;
 USING_NS_CC_EXT;
 classHelloWorld:publiccocos2d::CCLayer
 {
public:
 //Here'sadifference.Method'init'incocos2d-xreturnsbool,insteadofreturning'id'incocos2d-iphone
virtualboolinit();
 //there'sno'id'incpp,sowerecommendreturningtheclassinstancepointer
 staticcocos2d::CCScene*scene();
 
//aselectorcallback
voidmenuCloseCallback(CCObject*pSender);
//implementthe"staticnode()"methodmanually
 CREATE_FUNC(HelloWorld);
 boolccTouchBegan(CCTouch*pTouch,CCEvent*pEvent);
voidccTouchMoved(CCTouch*pTouch,CCEvent*pEvent);
//HTMLevents
voidonHTMLClicked(
 IRichNode*root,IRichElement*ele,int_id);
voidonHTMLMoved(
int_id,
constCCPoint&location,constCCPoint&delta);
 };
 #endif//__HELLOWORLD_SCENE_H__

HelloWorldScene.cpp

CCHTMLLabel*s_htmlLabel=NULL;

std::stringtt;
//on"init"youneedtoinitializeyourinstance
boolHelloWorld::init()
//////////////////////////////
//1.superinitfirst
if(!CCLayer::init())
returnfalse;
}
CCSizevisibleSize=CCDirector::sharedDirector()->getVisibleSize();
CCPointorigin=CCDirector::sharedDirector()->getVisibleOrigin();
/////////////////////////////
//2.addamenuitemwith"X"image,whichisclickedtoquittheprogram
//youmaymodifyit.
//adda"close"icontoexittheprogress.it'sanautoreleaSEObject
CCMenuItemImage*pCloseItem=CCMenuItemImage::create(
"CloseNormal.png",108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> "CloseSelected.png",
this,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> menu_selector(HelloWorld::menuCloseCallback));
pCloseItem->setPosition(ccp(origin.x+visibleSize.width-pCloseItem->getContentSize().width/2,
origin.y+pCloseItem->getContentSize().height/2));
//createmenu,it'sanautoreleaSEObject
CCMenu*pMenu=CCMenu::create(pCloseItem,NULL);
pMenu->setPosition(CCPointZero);
this->addChild(pMenu,1);
usingnamespacedfont;
CCLayerColor*l=CCLayerColor::create(ccc4(0xb0,0xb0,0xff));
l->setContentSize(this->getContentSize());
this->addChild(l);
//控件文字样式(尺寸、对齐方式、字体等等)
//font1
FontCatalog*font_catalog=NULL;
font_catalog=FontFactory::instance()->create_font(
"font1","simhei.ttf",0xffffffff,32,e_plain,0.0f,0);
//font2
font_catalog=FontFactory::instance()->create_font(
"font2","simkai.ttf",24,e_shadow,1.0f,0xff000000,0);
font_catalog->add_hackfont("htmltest/MarkerFelt.ttf",latin_charset(),-1);
//font3
"font3","simli.ttf",20,e_border,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> font_catalog->add_hackfont("simhei.ttf",5);
CCSizevsize=CCDirector::sharedDirector()->getVisibleSize();
CCString*str_utf8=CCString::createWithContentsOfFile("html.htm");
CCHTMLLabel*htmllabel=CCHTMLLabel::createWithString(str_utf8->getCString(),248)"> CCSize(vsize.width*0.8f,vsize.height),"default");
htmllabel->setAnchorPoint(ccp(0.5f,0.5f));
htmllabel->setPosition(ccp(vsize.width*0.5f,vsize.height*0.5f));
addChild(htmllabel);
s_htmlLabel=htmllabel;
//创建超链接
htmllabel->registerListener( FontFactory::instance()->dump_textures();
true;
}
voidHelloWorld::onHTMLClicked(
IRichNode*root,87); font-weight:bold; background-color:inherit">int_id)
{
CCLog("[OnClicked]id=%d",_id);
if(!s_htmlLabel)
return;
elseif(_id==1002)//close
s_htmlLabel->setVisible(false);
if(_id==2000)//reload
s_htmlLabel->setString(str_utf8->getCString());
voidHelloWorld::onHTMLMoved(
constCCPoint&delta)
CCLog("[OnMoved]id=%d",_id);
if(!s_htmlLabel)
return;
if(_id==1001)
s_htmlLabel->setPosition(ccpAdd(delta,s_htmlLabel->getPosition()));
boolHelloWorld::ccTouchBegan(CCTouch*pTouch,CCEvent*pEvent)
voidHelloWorld::ccTouchMoved(CCTouch*pTouch,CCEvent*pEvent)
}

运行效果图：

点击超链接：

控制台显示：

（编辑：李大同）

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