RTextField.hx

package flash.text;
import flash.display.BitmapData;
import flash.display.Sprite;

/**
 * Wraps a regular TextField and renders it to a Bitmap without it ever being on the DisplayList.
 * Used to work around this bug: https://github.com/openfl/lime/issues/20
 * @author Martin Jonasson, m@grapefrukt.com
 */
class RTextField extends Sprite {
	
	public var autoSize(get, set):TextFieldAutoSize;
	public var defaultTextFormat(get, set):TextFormat;
	public var selectable(get, set):Bool;
	public var text(get, set):String;
	public var textColor(get, set):Int;
	public var textWidth(get, never):Float;
	public var textHeight(get, never):Float;
	public var wordWrap(get, set):Bool;
	
	private var t:TextField;
	private var w:Float;
	private var bitmapData:BitmapData;
	private var useBitmap:Bool;
	
	public function new(useBitmap:Bool) {
		super();
		this.useBitmap = useBitmap;
		t = new TextField();
		mouseEnabled = false;
		if (!useBitmap) addChild(t);
	}
	
	private function resize() {
		if (!useBitmap) return;
		if (bitmapData == null || t.textHeight > bitmapData.height || t.textWidth > bitmapData.width) {
			if (bitmapData != null) bitmapData.dispose();
			trace(t.textHeight, t.numLines);
			bitmapData = new BitmapData(Math.ceil(t.textWidth), Math.ceil(t.textHeight), true, 0x00000000);
		}
	}
	
	private function redraw() {
		if (!useBitmap) return;
		
		if (bitmapData == null || t.textHeight > bitmapData.height || t.textWidth > bitmapData.width) resize();
		
		bitmapData.fillRect(bitmapData.rect, 0xff00ffff);
		bitmapData.draw(t);
		graphics.clear();
		graphics.beginBitmapFill(bitmapData, null, false, true);
		graphics.drawRect(0, 0, bitmapData.width, bitmapData.height);
	}
	
	private function get_autoSize() { return t.autoSize; }
	private function set_autoSize(value:TextFieldAutoSize) { t.autoSize = value; return t.autoSize; }
	
	private function get_defaultTextFormat() { return t.defaultTextFormat; }
	private function set_defaultTextFormat(value:TextFormat) { t.defaultTextFormat = value; resize(); redraw(); return t.defaultTextFormat; }
		
	private function get_selectable() { return t.selectable; }
	private function set_selectable(value:Bool) { t.selectable = value; return t.selectable; }
	
	private function get_text() { return t.text; }
	private function set_text(value:String) { 
		if (t.text == value) return value;
		t.text = value; redraw(); 
		return t.text; 
	}
	
	private function get_textColor() { return t.textColor; }
	private function set_textColor(value:Int) { t.textColor = value; redraw();  return t.textColor; }
	
	private function get_textWidth() { return t.textWidth; }
	private function get_textHeight() { return t.textHeight; }
	
	override private function get_width() { return t.width; }
	override private function set_width(value:Float) { w = value; t.width = value; return w; }
	
	private function get_wordWrap() { return t.wordWrap; }
	private function set_wordWrap(value:Bool) { t.wordWrap = value; return t.wordWrap; }
	
}