private RibbonTabHeader GetTabHeader(RibbonTab tab)
{
Ribbon ribbon = tab.Ribbon;
if (ribbon != null)
{
int index = ribbon.ItemContainerGenerator.IndexFromContainer(tab);
if (index >= 0)
{
var grid = VisualTreeHelper.GetChild(ribbon, 0);
RibbonTabHeaderItemsControl headerItemsControl = null;
for (var i = 0; i < VisualTreeHelper.GetChildrenCount(grid) && headerItemsControl == null; i++)
{
headerItemsControl = VisualTreeHelper.GetChild(grid, i) as RibbonTabHeaderItemsControl;
}
if (headerItemsControl != null)
{
return(headerItemsControl.ItemContainerGenerator.ContainerFromIndex(index) as RibbonTabHeader);
}
}
}
return(null);
}
/// <summary>
/// This method is invoked when the IsItemsHost property changes.
/// </summary>
/// <param name="oldIsItemsHost">The old value of the IsItemsHost property.</param>
/// <param name="newIsItemsHost">The new value of the IsItemsHost property.</param>
protected override void OnIsItemsHostChanged(bool oldIsItemsHost, bool newIsItemsHost)
{
base.OnIsItemsHostChanged(oldIsItemsHost, newIsItemsHost);
if (newIsItemsHost)
{
RibbonTabHeaderItemsControl tabHeaderItemsControl = ParentTabHeaderItemsControl;
if (tabHeaderItemsControl != null)
{
IItemContainerGenerator generator = tabHeaderItemsControl.ItemContainerGenerator as IItemContainerGenerator;
if (generator != null && generator.GetItemContainerGeneratorForPanel(this) == generator)
{
tabHeaderItemsControl.InternalItemsHost = this;
}
}
}
else
{
RibbonTabHeaderItemsControl tabHeaderItemsControl = ParentTabHeaderItemsControl;
if (tabHeaderItemsControl != null && tabHeaderItemsControl.InternalItemsHost == this)
{
tabHeaderItemsControl.InternalItemsHost = null;
}
}
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
RibbonTabHeaderItemsControl tabItems = this.FindName("TabHeaderItemsControl") as RibbonTabHeaderItemsControl;
int lastClickTime = 0;
if (tabItems != null)
{
tabItems.PreviewMouseDown += (_, e) =>
{
// A continuous click was made (>= 2 clicks minimizes the control)
if (Environment.TickCount - lastClickTime < 300)
{
// here the control should be minimized
if (!IsMinimizable)
{
IsMinimized = false;
}
}
lastClickTime = Environment.TickCount;
}
}
;
}
public RibbonTabHeaderItemsControlAutomationPeer(RibbonTabHeaderItemsControl owner)
: base(owner)
{
}
protected virtual void OnActivatingKeyTip(ActivatingKeyTipEventArgs e)
{
if (e.OriginalSource == this)
{
e.KeyTipHorizontalPlacement = KeyTipHorizontalPlacement.KeyTipCenterAtTargetCenter;
e.KeyTipVerticalPlacement = KeyTipVerticalPlacement.KeyTipCenterAtTargetCenter;
e.KeyTipHorizontalOffset = e.KeyTipVerticalOffset = 0;
Ribbon ribbon = Ribbon;
if (ribbon != null)
{
RibbonTabHeaderItemsControl tabHeaderItemsControl = ribbon.RibbonTabHeaderItemsControl;
if (tabHeaderItemsControl != null &&
tabHeaderItemsControl.IsVisible)
{
GeneralTransform headerToItemsControl = TransformToAncestor(tabHeaderItemsControl);
if (headerToItemsControl != null)
{
Point tabHeaderOrigin = headerToItemsControl.Transform(new Point());
double tabHeaderCenterX = tabHeaderOrigin.X + (ActualWidth / 2);
if (DoubleUtil.LessThan(tabHeaderCenterX, 0) ||
DoubleUtil.GreaterThan(tabHeaderCenterX, tabHeaderItemsControl.ActualWidth))
{
e.KeyTipVisibility = Visibility.Hidden;
}
else
{
GeneralTransform itemsControlToRibbon = tabHeaderItemsControl.TransformToAncestor(ribbon);
if (itemsControlToRibbon != null)
{
Point tabHeaderItemsControlOrigin = itemsControlToRibbon.Transform(new Point());
double horizontalOffset = tabHeaderCenterX + tabHeaderItemsControlOrigin.X;
if (DoubleUtil.LessThan(horizontalOffset, 0) ||
DoubleUtil.GreaterThan(horizontalOffset, ribbon.ActualWidth))
{
e.KeyTipVisibility = Visibility.Hidden;
}
else
{
// Determine the position of keytip with respect to Ribbon,
// so that it does not get clipped.
e.KeyTipHorizontalOffset = horizontalOffset;
e.KeyTipVerticalOffset = tabHeaderItemsControlOrigin.Y + tabHeaderOrigin.Y + ActualHeight + KeyTipVerticalOffset;
e.KeyTipHorizontalPlacement = KeyTipHorizontalPlacement.KeyTipCenterAtTargetLeft;
e.KeyTipVerticalPlacement = KeyTipVerticalPlacement.KeyTipCenterAtTargetTop;
e.PlacementTarget = ribbon;
}
}
else
{
e.KeyTipVisibility = Visibility.Hidden;
}
}
}
else
{
e.KeyTipVisibility = Visibility.Hidden;
}
}
}
}
}