internal void HandleScreenSizeChanged()
{
stageWidth = Screen.width;
stageHeight = Screen.height;
this.cachedTransform.localScale = new Vector3(StageCamera.UnitsPerPixel, StageCamera.UnitsPerPixel, StageCamera.UnitsPerPixel);
UIContentScaler scaler = this.gameObject.GetComponent<UIContentScaler>();
scaler.ApplyChange();
GRoot.inst.ApplyContentScaleFactor();
onStageResized.Call();
}