Flash / Flex / ActionScript/TextField/Scroll

Responding to Scroll Events

 

package {
  import flash.display.Sprite;
  import flash.text.TextField;
  import flash.events.Event;
  public class Main extends Sprite {
    public function Main(  ) {
      var field:TextField = new TextField(  );
      field.autoSize = flash.text.TextFieldAutoSize.LEFT;
      field.text = "AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD";
 
      field.addEventListener(Event.SCROLL, onTextScroll);
      addChild(field);
    }
    private function onTextScroll(event:Event):void {
      trace("scroll");
    }
  }
}

Scrolling Text Programmatically

 
package {
  import flash.display.Sprite;
  import flash.text.TextField;
  public class Main extends Sprite {
    public function Main(  ) {
      var field:TextField = new TextField(  );
   
        field.scrollV = 1;   // Scroll to the top
        field.scrollV += 1;  // Scroll to the next line
        field.scrollV = 6;   // Scroll to line 6
        
        field.autoSize = flash.text.TextFieldAutoSize.LEFT;
        field.wordWrap = true;
        field.text = "AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD";
        addChild(field);
    }
  }
}

Set horizontal scroll value

 
package {
  import flash.display.Sprite;
  import flash.text.TextField;
  public class Main extends Sprite {
    public function Main(  ) {
        var field:TextField = new TextField(  );
                       
        field.scrollH = 0;                      // Scroll to the far left
        field.scrollH += 1;                     // Scroll to the right 1 pixel
        field.scrollH = field.maxScrollH;       // Scroll to the far right
        
        field.autoSize = flash.text.TextFieldAutoSize.LEFT;
        field.wordWrap = true;
        field.text = "AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD";
        addChild(field);
    }
  }
}

Set the scroll related properties

 
package {
  import flash.display.Sprite;
  import flash.text.TextField;
  public class Main extends Sprite {
    public function Main(  ) {
      var field:TextField = new TextField(  );
  
        field.scrollV = field.bottomScrollV;
        field.scrollV = field.bottomScrollV + 1;
        
        field.autoSize = flash.text.TextFieldAutoSize.LEFT;
        field.wordWrap = true;
        field.text = "AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD AAA BBB CCC DDD";
        addChild(field);
    }
  }
}

Using the Scroll Properties

 
package
{
import flash.text.TextField;
import flash.events.MouseEvent;
import flash.display.Sprite;
public class Main extends Sprite
{
    private var txt:TextField;
    
    public function Main()
    {
        txt = new TextField();
        txt.multiline = true;
        txt.wordWrap = true;
        txt.text = "Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text ";
            txt.height = 100
            txt.width = 50;
            addChild(txt);
            txt.addEventListener(MouseEvent.MOUSE_MOVE, scrollTextField);
        }
    
        private function scrollTextField(mouseEvent:MouseEvent):void
        {
            if (mouseEvent.stageY < 30)
            {
                txt.scrollV--;
            }
    
            if (mouseEvent.stageY > 70)
            {
                txt.scrollV++;
            }
        }
    }
}