• Label 自适应宽度

  1. setmaxLineWidth

     label->setMaxLineWidth(labelWidth);
     

  2. setDimensions(unsigned int width,unsigned int height)

     这个也是修改maxLineWidth
     

• 旋转，跳动的字符，使用fnt创建的字符串，可以通过getLetter获取到某个字符，然后执行action即可

  auto label = Label::createWithBMFont("fonts/bitmapFontTest.fnt", "Bitmap Font Atlas");
   auto BChar = (Sprite*) label->getLetter(0);
  auto FChar = (Sprite*) label->getLetter(7);
  auto AChar = (Sprite*) label->getLetter(12);
  
  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,nullptr);
  auto scale_4ever = RepeatForever::create(scale_seq);
  
  auto jump = JumpBy::create(0.5f, Vec2::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, nullptr);
  auto fade_4ever = RepeatForever::create(seq);
  
  BChar->runAction(rot_4ever);
  BChar->runAction(scale_4ever);
  FChar->runAction(jump_4ever);
  AChar->runAction(fade_4ever);
  

• 修改Label颜色

  使用Label成员函数setColor
  

• 一次性创建很多字符串，使用相同的FNT，速度会快很多

  for ( int i=0 ; i < 100;i ++ ) 
  {
      char str[6] = {0};
      sprintf(str, "-%d-", i);
      auto label = Label::createWithBMFont("fonts/bitmapFontTest.fnt", str);
      addChild(label);
  
      auto s = Director::getInstance()->getWinSize();
  
      auto p = Vec2( CCRANDOM_0_1() * s.width, CCRANDOM_0_1() * s.height);
      label->setPosition( p );
  }
  

• Label 默认anchorPoint为（0.5， 0.5）

  可以修改
  

• VS2012 好恶心的“美好的一天啊”,没有“啊”在VS2012会报错啊，我勒个去

  // Adding "啊" letter at the end of string to make VS2012 happy, otherwise VS will generate errors  
  // like "Error 3 error C2146: syntax error : missing ‘)‘ before identifier ‘label‘"; 
  TTFConfig ttfConfig("fonts/HKYuanMini.ttf",28,GlyphCollection::CUSTOM, "美好的一天啊");
  auto label = Label::createWithTTF(ttfConfig,"美好的一天啊", TextHAlignment::CENTER, size.width);      
  

• VS2012显示中文，3.x的做法

  auto strings = FileUtils::getInstance()->getValueMapFromFile("fonts/strings.xml");
  std::string chinese  = strings["chinese1"].asString();
  

• Label 对齐方式

  _label->setAlignment(TextHAlignment);
  //TextHAlignment::LEFT,TextHAlignment::RIGHT,TextHAlignment::CENTER
  

• 边框发亮，轮廓颜色

  label1->enableGlow(Color4B::YELLOW);   
  
  label3->enableOutline(Color4B::BLUE);    
  

• 阴影，及位置改变

  shadowLabelTTF->enableShadow(Color4B::BLACK);
  shadowLabelTTF->enableShadow(Color4B::BLACK,offset);   
  

• 修改行间距

  setLineHeight(float height)
  

• 修改字间距

  setAdditionalKerning(float space)    
  

转载请注明出处：helkyle.tk

查看3.x NewLabelApi 笔记