Cocos2d3.0RC2 Label study Note 1

Cocos2d3.0RC2 official offers us a lot of examples, here we learn Label, character bag official project is there, I also passed a copy here: http://download.csdn.net/detail/qqmcy/7245621

LabelAtlasTest

bool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }        Size visibleSize = Director::getInstance()->getVisibleSize();    Point origin = Director::getInstance()->getVisibleOrigin();    auto label1 = LabelAtlas::create("LabelAtLas  Test", "tuffy_bold_italic-charmap.plist");    addChild(label1, 0, 0);    label1->setPosition(Point(10, 100));    label1->setOpacity(200);        auto label2 = LabelAtlas::create("678904327423567", "tuffy_bold_italic-charmap.plist");    addChild(label2,0,1);    label2->setPosition(Point(10, 200));    label2->setOpacity(132);    _time = 0;        schedule(schedule_selector(HelloWorld::step));            return true;}void HelloWorld::step(float dt){    _time += dt;    char string[12] = {0};    sprintf(string, "%2.2f Test",_time);        auto label1 = (LabelAtlas*)getChildByTag(0);    label1->setString(string);        auto label2 = (LabelAtlas*)getChildByTag(1);    sprintf(string, "%d",(int)_time);    label2->setString(string);        }

LabelAtlasColorTest

bool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }        Size visibleSize = Director::getInstance()->getVisibleSize();    Point origin = Director::getInstance()->getVisibleOrigin();    auto label1 = LabelAtlas::create("LabelAtLas  Test", "tuffy_bold_italic-charmap.png",48,64,' ');        addChild(label1, 0, 0);    label1->setPosition(Point(10, 100));    label1->setOpacity(200);        auto label2 = LabelAtlas::create("678904327423567", "tuffy_bold_italic-charmap.png",48,64,' ');    addChild(label2,0,1);    label2->setPosition(Point(10, 200));    label2->setOpacity(132);    label2->setColor(Color3B::GREEN);            auto fade = FadeOut::create(1.0f);    auto fade_in = fade->reverse();    auto cb = CallFunc::create(CC_CALLBACK_0(HelloWorld::actionFinishCallback, this));    auto seq = Sequence::create(fade,fade_in,cb, NULL);    auto repeat = RepeatForever::create(seq);    label2->runAction(repeat);    schedule(schedule_selector(HelloWorld::step));                _time = 0;                return true;}void HelloWorld::actionFinishCallback(){    CCLOG("Action finished");}void HelloWorld::step(float dt){    _time += dt;    char string[12] = {0};    sprintf(string, "%2.2f Test",_time);    auto label1 = (LabelAtlas*)getChildByTag(0);    label1->setString(string);        auto label2 = (LabelAtlas*)getChildByTag(1);    sprintf(string, "%d", (int)_time);    label2->setString( string );    }

LabelTTFAlignment

bool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }        auto s = Director::getInstance()->getWinSize();       auto ttf0 = LabelTTF:: create("Alignment 0\nnew line", "Helvetica", 32,Size(256, 32),TextHAlignment::LEFT);    ttf0->setPosition(Point(s.width / 2, s.height / 6 * 2));    ttf0->setAnchorPoint(Point::ANCHOR_MIDDLE);    this->addChild(ttf0);            auto ttf1 = LabelTTF:: create("Alignment 0\nnew line", "Helvetica", 32,Size(256, 32),TextHAlignment::CENTER);    ttf1->setPosition(Point(s.width / 2, s.height / 6 * 3));    ttf1->setAnchorPoint(Point::ANCHOR_MIDDLE);    this->addChild(ttf1);            auto ttf2 = LabelTTF:: create("Alignment 0\nnew line", "Helvetica", 32,Size(256, 32),TextHAlignment::RIGHT);    ttf2->setPosition(Point(s.width / 2, s.height / 6 * 4));    ttf2->setAnchorPoint(Point::ANCHOR_MIDDLE);    this->addChild(ttf2);    _time = 0;        return true;}

Effect:

LabelBMFont

bool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }           auto col = LayerColor::create(Color4B(128, 128, 128, 255));    addChild(col, -10);        auto label1 = LabelBMFont::create("Test", "bitmapFontTest2.fnt");    label1->setAnchorPoint(Point::ANCHOR_BOTTOM_LEFT);    addChild(label1, 0, 10);        auto fade = FadeOut::create(1.0f);    auto fade_in = fade->reverse();    auto seq = Sequence::create(fade,fade_in, NULL);    auto repeat =  RepeatForever::create(seq);    label1->runAction(repeat);        auto label2 = LabelBMFont::create("Testedddddd", "bitmapFontTest2.fnt");    label2->setPosition(Point(100, 200));    label2->setAnchorPoint(Point::ANCHOR_MIDDLE);    label2->setColor(Color3B::RED);    addChild(label2, 0, 11);        auto tint = Sequence::create(TintTo::create(1, 255, 0, 0),TintTo::create(1, 0, 255, 0),TintTo::create(1, 0, 0, 255), NULL);    label2->runAction(RepeatForever::create(tint));                auto label3 = LabelBMFont::create("ghjkl", "bitmapFontTest2.fnt");    label3->setAnchorPoint(Point::ANCHOR_TOP_RIGHT);    addChild(label3, 0, 12);    label3->setPosition(Point(720, 100));           schedule(schedule_selector(HelloWorld::step));            return true;}void HelloWorld::step(float dt){    _time += dt;    //std::string string;    char string[15] = {0};    sprintf(string, "%2.2f Test j", _time);    //string.format("%2.2f Test j", _time);        auto label1 = (LabelBMFont*) getChildByTag(10);    label1->setString(string);        auto label2 = (LabelBMFont*) getChildByTag(11);    label2->setString(string);        auto label3 = (LabelBMFont*) getChildByTag(12);    label3->setString(string);}

Effect:

bool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }           auto label = LabelBMFont::create("Bitmap Font Atlas", "bitmapFontTest.fnt");    addChild(label);        auto s = Director::getInstance()->getWinSize();    label->setPosition(Point(s.width / 2, s.height / 2));    label->setAnchorPoint(Point::ANCHOR_MIDDLE);        auto rotate = RotateBy::create(2, 360);    auto rot_4ever = RepeatForever::create(rotate);        auto scale = ScaleBy::create(2, 1.5f);    auto scale_back = scale->reverse();    auto scale_seq = Sequence::create(scale,scale_back, NULL);    auto scale_4ever = RepeatForever::create(scale_seq);        auto jump = JumpBy::create(0.5f, Point::ZERO, 60, 1);    auto jump_4ever = RepeatForever::create(jump);        auto fade_out = FadeOut::create(1);    auto fade_in = FadeIn::create(1);    auto seq = Sequence::create(fade_out,fade_in, NULL);    auto fade_4ever = RepeatForever::create(seq);        label->runAction(fade_4ever);    auto label2 = LabelBMFont::create("00.0", "bitmapFontTest.fnt");    addChild(label2, 0, 13);    label2->setPosition(Point(s.width / 2, 80));        label2->runAction(rot_4ever->clone());        schedule(schedule_selector(HelloWorld::step),0.1f);            return true;}void HelloWorld::step(float dt){    _time += dt;    //std::string string;    char string[15] = {0};    sprintf(string, "%2.2f Test j", _time);    //string.format("%2.2f Test j", _time);        auto label1 = (LabelBMFont*) getChildByTag(13);    label1->setString(string);        }

Effect:

<喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> VcD4KPHA + PC9wPgo8cCBjbGFzcz0 = "p1"> bitmapFontTest4.fnt

     auto label = LabelBMFont::create("dfghjk", "bitmapFontTest4.fnt");    addChild(label);        auto s = Director::getInstance()->getWinSize();        label->setPosition( Point(s.width/2, s.height/2) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE );

BitmapFontTest5.fnt

 auto s = Director::getInstance()->getWinSize();        LabelBMFont* label = NULL;    label = LabelBMFont::create("FaFeFiFoFu", "bitmapFontTest5.fnt");    addChild(label);    label->setPosition( Point(s.width/2, s.height/2+50) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE ) ;        label = LabelBMFont::create("fafefifofu", "bitmapFontTest5.fnt");    addChild(label);    label->setPosition( Point(s.width/2, s.height/2) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE );        label = LabelBMFont::create("aeiou", "bitmapFontTest5.fnt");    addChild(label);    label->setPosition( Point(s.width/2, s.height/2-50) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE );

 auto s = Director::getInstance()->getWinSize();        LabelBMFont* label = nullptr;    label = LabelBMFont::create("Blue", "bitmapFontTest5.fnt");    label->setColor( Color3B::BLUE );    addChild(label);    label->setPosition( Point(s.width/2, s.height/4) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE );        label = LabelBMFont::create("Red", "bitmapFontTest5.fnt");    addChild(label);    label->setPosition( Point(s.width/2, 2*s.height/4) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE );    label->setColor( Color3B::RED );        label = LabelBMFont::create("G", "bitmapFontTest5.fnt");    addChild(label);    label->setPosition( Point(s.width/2, 3*s.height/4) );    label->setAnchorPoint( Point::ANCHOR_MIDDLE );    label->setColor( Color3B::GREEN );    label->setString("Green");

for( int i=0 ; i < 100;i ++ )    {        char str[6] = {0};        sprintf(str, "-%d-", i);        auto label = LabelBMFont::create(str, "bitmapFontTest.fnt");        addChild(label);                auto s = Director::getInstance()->getWinSize();                auto p = Point( CCRANDOM_0_1() * s.width, CCRANDOM_0_1() * s.height);        label->setPosition( p );        label->setAnchorPoint(Point::ANCHOR_MIDDLE);    }

 Size s;        // Left    auto label1 = Label::createWithBMFont("bitmapFontTest3.fnt", " Multi line\nLeft");    label1->setAnchorPoint(Point(0,0));    addChild(label1, 0, 12);        s = label1->getContentSize();    CCLOG("content size: %.2fx%.2f", s.width, s.height);            // Center    auto label2 = Label::createWithBMFont( "bitmapFontTest3.fnt", "Multi line\nCenter");    addChild(label2, 0, 13);        s= label2->getContentSize();    CCLOG("content size: %.2fx%.2f", s.width, s.height);        // right    auto label3 = Label::createWithBMFont("bitmapFontTest3.fnt", "Multi line\nRight\nThree lines Three");    label3->setAnchorPoint(Point(1, 1));    addChild(label3, 0, 14);        s = label3->getContentSize();    CCLOG("content size: %.2fx%.2f", s.width, s.height);        label1->setPosition(Point(50, 50));    label2->setPosition(Point(100, 400));    label3->setPosition(Point(300, 300));

 auto s = Director::getInstance()->getWinSize();        // LabelBMFont    auto label1 = Label::createWithBMFont("konqa32.fnt", "TESTING RETINA DISPLAY");    addChild(label1);    label1->setPosition(Point(s.width/2, s.height/2));

 auto s = Director::getInstance()->getWinSize();            auto layer = LayerColor::create(Color4B(128, 128, 128, 255));    addChild(layer, -10);        // LabelBMFont    auto label1 = Label::createWithBMFont("futura-48.fnt", "TESTING RETINA DISPLAY");    addChild(label1);    label1->setPosition(Point(s.width/2, s.height/2));

bool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !Layer::init() )    {        return false;    }           auto listener = EventListenerTouchAllAtOnce::create();    listener->onTouchesBegan = CC_CALLBACK_2(HelloWorld::onTouchesBegan, this);    listener->onTouchesMoved = CC_CALLBACK_2(HelloWorld::onTouchesMoved, this);    listener->onTouchesEnded = CC_CALLBACK_2(HelloWorld::onTouchesEnded, this);        _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);        auto size = Director::getInstance()->getWinSize();        this->_labelShouldRetain = Label::createWithBMFont("markerFelt.fnt", LongSentencesExample,TextHAlignment::CENTER,size.width / 1.5);    this->_labelShouldRetain->retain();        this->_arrowsBarShouldRetain = Sprite::create("arrowsBar.png");    this->_arrowsBarShouldRetain->retain();    this->_arrowsShouldRetain = Sprite::create("arrows.png");    this->_arrowsShouldRetain->retain();        MenuItemFont::setFontSize(20);    auto longSentences = MenuItemFont::create("Long Flowing Sentences", CC_CALLBACK_1(HelloWorld::stringChanged, this));    auto lineBreaks = MenuItemFont::create("Short Sentences With Intentional Line Breaks", CC_CALLBACK_1(HelloWorld::stringChanged, this));    auto mixed = MenuItemFont::create("Long Sentences Mixed With Intentional Line Breaks", CC_CALLBACK_1(HelloWorld::stringChanged, this));        auto stringMenu = Menu::create(longSentences,lineBreaks,mixed, NULL);    stringMenu->alignItemsVertically();        longSentences->setColor(Color3B::RED);    _lastSentenceItem = longSentences;    longSentences->setTag(LongSentences);    lineBreaks->setTag(LineBreaks);    mixed->setTag(Mixed);            MenuItemFont::setFontSize(30);        auto left = MenuItemFont::create("Left", CC_CALLBACK_1(HelloWorld::alignmentChanged, this));    auto center = MenuItemFont::create("Center", CC_CALLBACK_1(HelloWorld::alignmentChanged, this));    auto right = MenuItemFont::create("Right", CC_CALLBACK_1(HelloWorld::alignmentChanged, this));        auto alignmentMenu = Menu::create(left,center,right, NULL);    center->setColor(Color3B::RED);    _lastAlignmentItem = center;    left->setTag(LeftAlign);    center->setTag(CenterAlign);    right->setTag(RightAlign);        this->_labelShouldRetain->setPosition(Point(size.width / 2, size.height / 2));    this->_arrowsBarShouldRetain->setVisible(false);    float arrowsWidth = (ArrowsMax - ArrowsMin) * size.width;    this->_arrowsBarShouldRetain->setScaleX(arrowsWidth / this->_arrowsBarShouldRetain->getContentSize().width);        this->snapArrowsToEdge();        stringMenu->setPosition(Point(size.width/2, size.height - menuItemPaddingCenter));    alignmentMenu->setPosition(Point(size.width/2, menuItemPaddingCenter+15));        this->addChild(this->_labelShouldRetain);    this->addChild(this->_arrowsBarShouldRetain);    this->addChild(this->_arrowsShouldRetain);    this->addChild(stringMenu);    this->addChild(alignmentMenu);                return true;}void HelloWorld::stringChanged(cocos2d::Ref *sender){    auto item = (MenuItemFont*)sender;    item->setColor(Color3B::RED);    this->_lastAlignmentItem->setColor(Color3B::WHITE);    this->_lastAlignmentItem = item;        switch(item->getTag())    {        case LongSentences:            this->_labelShouldRetain->setString(LongSentencesExample);            break;        case LineBreaks:            this->_labelShouldRetain->setString(LineBreaksExample);            break;        case Mixed:            this->_labelShouldRetain->setString(MixedExample);            break;                    default:            break;    }        this->snapArrowsToEdge();}void HelloWorld::snapArrowsToEdge(){    this->_arrowsShouldRetain->setPosition(Point(this->_labelShouldRetain->getPosition().x + this->_labelShouldRetain->getContentSize().width/2,                                                 this->_labelShouldRetain->getPosition().y));}void HelloWorld::onTouchesBegan(const std::vector
 
  & touches, cocos2d::Event  *event){    auto touch = touches[0];    auto location = touch->getLocationInView();        if (this->_arrowsShouldRetain->getBoundingBox().containsPoint(location))    {        _drag = true;        this->_arrowsBarShouldRetain->setVisible(true);    }}void HelloWorld::onTouchesEnded(const std::vector
  
   & touches, cocos2d::Event  *event){    _drag = false;    this->snapArrowsToEdge();        this->_arrowsBarShouldRetain->setVisible(false);}void HelloWorld::onTouchesMoved(const std::vector
   
    & touches, cocos2d::Event  *event){    if (! _drag)    {        return;    }        auto touch = touches[0];    auto location = touch->getLocationInView();        auto winSize = Director::getInstance()->getWinSize();        this->_arrowsShouldRetain->setPosition(Point(MAX(MIN(location.x, ArrowsMax*winSize.width), ArrowsMin*winSize.width),                                                 this->_arrowsShouldRetain->getPosition().y));        float labelWidth = fabs(this->_arrowsShouldRetain->getPosition().x - this->_labelShouldRetain->getPosition().x) * 2;        this->_labelShouldRetain->setMaxLineWidth(labelWidth);}void HelloWorld::alignmentChanged(cocos2d::Ref *sender){    auto item = static_cast
    
     (sender);    item->setColor(Color3B::RED);    this->_lastAlignmentItem->setColor(Color3B::WHITE);    this->_lastAlignmentItem = item;        switch(item->getTag())    {        case LeftAlign:            this->_labelShouldRetain->setAlignment(TextHAlignment::LEFT);            break;        case CenterAlign:            this->_labelShouldRetain->setAlignment(TextHAlignment::CENTER);            break;        case RightAlign:            this->_labelShouldRetain->setAlignment(TextHAlignment::RIGHT);            break;                    default:            break;    }        this->snapArrowsToEdge();}
    
   
  
 

LabelTTFLongLineWrapping

 auto size = Director::getInstance()->getWinSize();        TTFConfig ttfConfig("arial.ttf",14);    auto label1 = Label::createWithTTF(ttfConfig, LongSentencesExample, TextHAlignment::CENTER,size.width);    label1->setPosition( Point(size.width/2, size.height/2) );    label1->setAnchorPoint(Point(0.5, 1.0));    addChild(label1);

 auto size = Director::getInstance()->getWinSize();        // Long sentence    TTFConfig ttfConfig("wt021.ttf",18,GlyphCollection::DYNAMIC);    std::string text = FileUtils::getInstance()->getStringFromFile("commonly_used_words.txt");    auto label = Label::createWithTTF(ttfConfig,text, TextHAlignment::CENTER, size.width);    label->setPosition( Point(size.width/2, size.height/2) );    addChild(label);