Starling scrollrect

gistfile1.txt

private var controlPoint:Point = new Point(); // положение относительно стейдж
private var controlRect:Rectangle = new Rectangle();  // размер контрола, положение в нуле
private var globalControlRect:Rectangle = new Rectangle(); // тоже, но положение как у первой точки


private function update():void
{
        controlPoint.x = 0;
        controlPoint.y = 0;
        controlPoint = localToGlobal(controlPoint);

        globalControlRect.x = controlPoint.x;
        globalControlRect.y = controlPoint.y;

        controlRect.width = globalControlRect.width = control.width;
        controlRect.height = globalControlRect.height = control.height;
}


override public function render(support:RenderSupport, parentAlpha:Number):void
    {
        support.finishQuadBatch();


        Starling.context.setScissorRectangle(globalControlRect);

        super.render(support,alpha);
        support.finishQuadBatch();

        Starling.context.setScissorRectangle(null);
    }

    override public function getBounds(targetSpace:DisplayObject, resultRect:Rectangle = null):Rectangle
    {
        var res:Rectangle = super.getBounds(targetSpace, resultRect);
        if (res.width > controlRect.width) res.width = controlRect.width;
        if (res.height > controlRect.height) res.height = controlRect.height;

        return res;
    }

    override public function hitTest(localPoint:Point, forTouch:Boolean = false):DisplayObject
    {
        if (controlRect.containsPoint(localPoint))
            return super.hitTest(localPoint, forTouch);

        return null;
    }