public static void BatchDraw(Control control, GraphicsDevice device, SpriteBatch spriteBatch, Vector2 offset, GameTime gameTime)
{
if (control != null && control.Visible)
{
spriteBatch.Begin();
control.Draw(new DrawContext
{
Device = device,
SpriteBatch = spriteBatch,
DrawOffset = offset + control.Position,
GameTime = gameTime
});
spriteBatch.End();
}
}
protected virtual void OnChildRemoved(int index, Control child)
{
this.InvalidateAutoSize();
}
public void AddChild(Control child, int index)
{
if (child.Parent != null)
{
child.Parent.RemoveChild(child);
}
child.Parent = this;
if (this.children == null)
{
this.children = new List<Control>();
}
this.children.Insert(index, child);
this.OnChildAdded(index, child);
}
public void RemoveChild(Control child)
{
if (child.Parent != this)
{
throw new InvalidOperationException();
}
this.RemoveChildAt(this.children.IndexOf(child));
}
public void AddChild(Control child)
{
if (child.Parent != null)
{
child.Parent.RemoveChild(child);
}
this.AddChild(child, this.ChildCount);
}