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Scale text to fit in textField; scale TextField to fit text.

/ Published in: ActionScript 3
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  1. import flash.text.TextField;
  2.  
  3. function scaleTextToFitInTextField( txt : TextField ):void
  4. {  
  5.      var f:TextFormat = txt.getTextFormat();
  6.      f.size = ( txt.width > txt.height ) ? txt.width : txt.height;
  7.      txt.setTextFormat( f );
  8.  
  9.      while ( txt.textWidth > txt.width - 4 || txt.textHeight > txt.height - 6 ) 
  10.      {    
  11.           f.size = int( f.size ) - 1;    
  12.           txt.setTextFormat( f );  
  13.      }
  14. }
  15.  
  16. function scaleTextFieldToFitText( txt : TextField ) : void
  17. {
  18.      //the 4s take into account Flash's default padding.
  19.      //If I omit them, edges of character get cut off.
  20.      txt.width = txt.textWidth + 4;
  21.      txt.height = txt.textHeight + 4;
  22. }
  23.  
  24.  
  25. //demo
  26. var tf : TextField = new TextField();
  27. addChild( tf );
  28. tf.border = true;
  29. tf.width = Math.random() * 400 + 30;
  30. tf.height = Math.random() * 400 + 30;
  31. tf.text = "hello there";
  32. scaleTextToFitInTextField( tf );
  33. scaleTextFieldToFitText( tf );

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