internal void ChangeLayerOrderRelative(BaseControlLayer layer, int offset)
{
_layers.ChangeIndexRelative(layer.Name, offset);
}
internal void RemoveLayer(BaseControlLayer layer)
{
_layers.Remove(layer.Name);
layer.VirtualSizeChanged -= LayerVirtualSizeChangedHandler;
CalculateVirtualSize();
CheckScrollValue();
}
internal void AddLayer(BaseControlLayer layer)
{
_layers.Add(layer);
layer.VirtualSizeChanged += LayerVirtualSizeChangedHandler;
CalculateVirtualSize();
CheckScrollValue();
}