ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Keyboard input
package {
import flash.geom.Rectangle;
import flash.display.Sprite;
import flash.text.engine.TextElement;
import flash.text.engine.TextBlock;
import flash.events.MouseEvent;
import flash.events.FocusEvent;
import flash.events.KeyboardEvent;
import flash.text.engine.TextLine;
import flash.text.engine.ElementFormat;
import flash.events.Event;
public class TextInput extends Sprite
{
public var text:String = " ";
public var textSize:Number = 24;
public var textColor:uint = 0x000000;
private var _bounds:Rectangle = new Rectangle( 0, 0, 100, textSize );
private var textElement: TextElement;
private var textBlock:TextBlock = new TextBlock();
public function TextInput( text:String = "" )
{
this.text = text;
this.scrollRect = _bounds;
this.focusRect= false;
}
//Enable keyboard support
this.needsSoftKeyboard = true;
this.addEventListener(MouseEvent.MOUSE_DOWN, onSelect);
this.addEventListener(FocusEvent.FOCUS_IN, onFocusIn);
this.addEventListener(FocusEvent.FOCUS_OUT, onFocusOut);
//Setup text engine
textElement = new TextElement( text, new ElementFormat( null, textSize, textColor ) );
textBlock.content = textElement;
var firstLine:TextLine = textBlock.createTextLine( null, _bounds.width - 8 );
firstLine.x = 4;
firstLine.y = 4 + firstLine.totalHeight;
this.addChild( firstLine );
private function onSelect( event:MouseEvent ):void
{
stage.focus = this;
}
private function onFocusIn( event:FocusEvent ):void
{
this.addEventListener( KeyboardEvent.KEY_DOWN, onKey );
}
private function onFocusOut( event:FocusEvent ):void
{
this.removeEventListener( KeyboardEvent.KEY_UP, onKey );
}
Last updated 6/6/2012
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