private void HandlePintaCoreActionsLayersMoveLayerDownActivated(object sender, EventArgs e)
{
Document doc = PintaCore.Workspace.ActiveDocument;
PintaCore.Tools.Commit();
SwapLayersHistoryItem hist = new SwapLayersHistoryItem("Menu.Layers.MoveLayerDown.png", Catalog.GetString("Move Layer Down"), doc.CurrentLayerIndex, doc.CurrentLayerIndex - 1);
doc.MoveCurrentLayerDown();
doc.History.PushNewItem(hist);
}