private void SetDrag_INTERNAL(Vector2 delta)
{
var k = (this.GetLayoutRoot() as RectTransform).sizeDelta.x / Screen.width;
if (this.preferences.IsDragViewportRestricted() == true)
{
var screenRect = WindowSystem.GetScreenRect();
var rect = this.GetRect();
rect.center += delta;
if (rect.xMin <= screenRect.xMin)
{
delta.x += screenRect.xMin - rect.xMin;
}
if (rect.yMin - rect.height <= screenRect.yMin)
{
delta.y += screenRect.yMin - (rect.yMin - rect.height);
}
if (rect.xMax >= screenRect.xMax)
{
delta.x += screenRect.xMax - rect.xMax;
}
if (rect.yMax - rect.height >= screenRect.yMax)
{
delta.y += screenRect.yMax - (rect.yMax - rect.height);
}
}
this.MoveLayout(delta * k);
}