code: function textSize(width, height, fontSize, scale) {
  	    var stageWidth = parseInt(width, 10);
  	    var stageHeight = parseInt(height, 10);
  
  	    var bigSide = Math.max(stageWidth, stageHeight);
  	    var smallSide = Math.min(stageWidth, stageHeight);
  
  	    var newHeight = 0.8 * Math.min(smallSide, bigSide * scale);
  	    return Math.round(Math.max(fontSize, newHeight));
  	}
docs: Adaptive text sizing function
  
  @private
  @param width Parent width
  @param height Parent height
  @param fontSize Requested text size
  @param scale Proportional scale of text