// Size change to collapse ribbon
private void OnSizeChanged(object sender, SizeChangedEventArgs e)
{
this.MaintainIsCollapsed();
if (this.iconImage is not null &&
this.ActualWidth <= 140D + RibbonProperties.GetLastVisibleWidth(this.iconImage).GetZeroIfInfinityOrNaN() + RibbonProperties.GetLastVisibleWidth(this.WindowCommands?.ItemsControl).GetZeroIfInfinityOrNaN())
{
this.SetCurrentValue(IsIconVisibleProperty, BooleanBoxes.FalseBox);
this.TitleBar?.SetCurrentValue(VisibilityProperty, VisibilityBoxes.Collapsed);
this.WindowCommands?.SetCurrentValue(WindowCommands.ItemsPanelVisibilityProperty, VisibilityBoxes.Collapsed);
}
// Size change to collapse ribbon
private void OnSizeChanged(object sender, SizeChangedEventArgs e)
{
this.MaintainIsCollapsed();
if (this.iconImage != null &&
this.ActualWidth <= 140D + RibbonProperties.GetLastVisibleWidth(this.iconImage).GetZeroIfInfinityOrNaN() + RibbonProperties.GetLastVisibleWidth(this.WindowCommands.ItemsControl).GetZeroIfInfinityOrNaN())
{
this.SetCurrentValue(IsIconVisibleProperty, false);
this.TitleBar.SetCurrentValue(VisibilityProperty, Visibility.Collapsed);
this.WindowCommands.SetCurrentValue(WindowCommands.ItemsPanelVisibilityProperty, Visibility.Collapsed);
}
else
{
this.InvalidateProperty(IsIconVisibleProperty);
this.iconImage.SetValue(RibbonProperties.LastVisibleWidthProperty, this.iconImage.ActualWidth);
this.TitleBar.InvalidateProperty(VisibilityProperty);
this.WindowCommands.InvalidateProperty(WindowCommands.ItemsPanelVisibilityProperty);
this.WindowCommands.ItemsControl.SetValue(RibbonProperties.LastVisibleWidthProperty, this.WindowCommands.ItemsControl.ActualWidth);
}
}