private void SyncChildrenToContexts()
{
// Find any filler child
ViewBase filler = null;
foreach (ViewBase child in this)
{
if (GetDock(child) == ViewDockStyle.Fill)
{
filler = child;
break;
}
}
// Remove all child elements
Clear();
// Make sure we have enough cached elements
if (_contextTitlesCache.Count < ViewLayoutRibbonTabs.ContextTabSets.Count)
{
for (int i = _contextTitlesCache.Count; i < ViewLayoutRibbonTabs.ContextTabSets.Count; i++)
{
// Create a new view element and an associated button controller
ViewDrawRibbonContextTitle viewContextTitle = new ViewDrawRibbonContextTitle(_ribbon, _ribbon.StateContextCheckedNormal.RibbonTab);
viewContextTitle.MouseController = new ContextTitleController(_ribbon);
_contextTitlesCache.Add(viewContextTitle);
}
}
// Add a view element per context and update with correct reference
for (int i = 0; i < ViewLayoutRibbonTabs.ContextTabSets.Count; i++)
{
ViewDrawRibbonContextTitle viewContext = _contextTitlesCache[i];
ContextTitleController viewController = (ContextTitleController)viewContext.MouseController;
viewContext.ContextTabSet = ViewLayoutRibbonTabs.ContextTabSets[i];
viewController.ContextTabSet = viewContext.ContextTabSet;
Add(viewContext);
}
// Put back any filler
if (filler != null)
{
Add(filler, ViewDockStyle.Fill);
}
}
/// <summary>
/// Perform a layout of the elements.
/// </summary>
/// <param name="context">Layout context.</param>
public override void Layout(ViewLayoutContext context)
{
Debug.Assert(context != null);
// Sync children to match the current context tabs
SyncChildrenToContexts();
// We take on all the available display area
ClientRectangle = context.DisplayRectangle;
// Find any filler child
ViewBase filler = null;
foreach (ViewBase child in this)
{
if (GetDock(child) == ViewDockStyle.Fill)
{
filler = child;
break;
}
}
int xLeftMost = ClientRectangle.Right;
int xRightMost = ClientRectangle.Left;
// Find the correct position for each child context set
foreach (ViewBase child in this)
{
// Only interested in visible children
if (child.Visible)
{
// We are only interested in laying out context titles
if (child is ViewDrawRibbonContextTitle)
{
ViewDrawRibbonContextTitle childContextTitle = child as ViewDrawRibbonContextTitle;
// Get the context set it is representing
ContextTabSet tabContext = childContextTitle.ContextTabSet;
// Get the screen position of the left and right hand positions
Point leftTab = tabContext.GetLeftScreenPosition();
Point rightTab = tabContext.GetRightScreenPosition();
// If our position is above the ribbon control we must be in the chrome
if (_captionArea.UsingCustomChrome && !_captionArea.KryptonForm.ApplyComposition)
{
int leftPadding = _captionArea.RealWindowBorders.Left;
leftTab.X += leftPadding;
rightTab.X += leftPadding;
}
// Convert the screen to our own coordinates
leftTab = context.TopControl.PointToClient(leftTab);
rightTab = context.TopControl.PointToClient(rightTab);
// Calculate the position of the child and layout
context.DisplayRectangle = new Rectangle(leftTab.X, ClientLocation.Y, rightTab.X - leftTab.X, ClientHeight);
childContextTitle.Layout(context);
// Track the left and right most positions
xLeftMost = Math.Min(xLeftMost, leftTab.X);
xRightMost = Math.Max(xRightMost, rightTab.X);
}
}
}
// Do we need to position a filler element?
if (filler != null)
{
// How much space available on the left side
int leftSpace = xLeftMost - ClientRectangle.Left;
int rightSpace = ClientRectangle.Right - xRightMost;
// Use the side with the most space
if (leftSpace >= rightSpace)
{
context.DisplayRectangle = new Rectangle(ClientLocation.X, ClientLocation.Y, leftSpace, ClientHeight);
}
else
{
context.DisplayRectangle = new Rectangle(xRightMost, ClientLocation.Y, rightSpace, ClientHeight);
}
filler.Layout(context);
}
// Put the original value back again
context.DisplayRectangle = ClientRectangle;
}