// Handles visibility changed
private static void OnVisibilityChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RibbonGroupBox box = (d as RibbonGroupBox);
box.ClearCache();
}
/// <summary>
/// Measures all of the RibbonGroupBox, and resize them appropriately
/// to fit within the available room
/// </summary>
/// <param name="availableSize">The available size that this element can give to child elements.</param>
/// <returns>The size that the groups container determines it needs during
/// layout, based on its calculations of child element sizes.
/// </returns>
protected override Size MeasureOverride(Size availableSize)
{
Size infinitySize = new Size(Double.PositiveInfinity, availableSize.Height);
Size desiredSize = GetChildrenDesiredSizeIntermediate();
if (reduceOrder.Length == 0)
{
VerifyScrollData(availableSize.Width, desiredSize.Width);
return(desiredSize);
}
// If we have more available space - try to expand groups
while (desiredSize.Width <= availableSize.Width)
{
bool hasMoreVariants = reduceOrderIndex < reduceOrder.Length - 1;
if (!hasMoreVariants)
{
break;
}
// Increase size of another item
reduceOrderIndex++;
IncreaseGroupBoxSize(reduceOrder[reduceOrderIndex]);
desiredSize = GetChildrenDesiredSizeIntermediate();
}
// If not enough space - go to next variant
while (desiredSize.Width > availableSize.Width)
{
bool hasMoreVariants = reduceOrderIndex >= 0;
if (!hasMoreVariants)
{
break;
}
// Decrease size of another item
DecreaseGroupBoxSize(reduceOrder[reduceOrderIndex]);
reduceOrderIndex--;
desiredSize = GetChildrenDesiredSizeIntermediate();
}
// Set find values
foreach (object item in InternalChildren)
{
RibbonGroupBox groupBox = item as RibbonGroupBox;
if (groupBox == null)
{
continue;
}
if ((groupBox.State != groupBox.StateIntermediate) ||
(groupBox.Scale != groupBox.ScaleIntermediate))
{
groupBox.SuppressCacheReseting = true;
groupBox.State = groupBox.StateIntermediate;
groupBox.Scale = groupBox.ScaleIntermediate;
groupBox.InvalidateLayout();
groupBox.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
groupBox.SuppressCacheReseting = false;
}
// Something wrong with cache?
if (groupBox.DesiredSizeIntermediate != groupBox.DesiredSize)
{
// Reset cache and reinvoke masure
groupBox.ClearCache();
return(MeasureOverride(availableSize));
}
}
VerifyScrollData(availableSize.Width, desiredSize.Width);
return(desiredSize);
}
