private void OpenPreviewWindow(object sender, RoutedEventArgs e)
{
_preWindow?.Close();
var sidemargin = 20;
var topmargin = 30;
_preWindow = new PreviewWindow(new PreviewWindowViewModel());
_preWindow.Height = Math.Max(164, TokenControl.ImageResolutionHeight) + topmargin * 2;
_preWindow.Width = Math.Max(164, TokenControl.ImageResolutionWidth) + sidemargin * 2;
_preWindow.Closed += (o, args) =>
{
_preWindow = null;
_vm.OpenPreviewWindow.OnCanExecuteChanged(sender);
_vm.UpdatePreview.OnCanExecuteChanged(sender);
};
_preWindow.Show();
_preWindow.Topmost = _vm.KeepPreviewOnTop;
_vm.OpenPreviewWindow.OnCanExecuteChanged(sender);
_vm.UpdatePreview.OnCanExecuteChanged(sender);
RenderUsingDispatcher();
}
