public override bool Layout(List <IDataRogueControlRenderer> controlRenderers, ISystemContainer systemContainer, object handle, List <MapCoordinate> playerFov, Rectangle boundingBox)
{
if (!Initialised)
{
InitialiseControls();
}
Controls = new List <IDataRogueControl> {
LeftSelector, RightSelector
};
var internalBoundingBox = boundingBox.PadIn(Margin).PadIn(Padding);
// First assign space for the paging text, if it turns out to be necessary.
PagingText.Layout(controlRenderers, systemContainer, handle, playerFov, internalBoundingBox);
var spaceForMenuItems = new Rectangle(internalBoundingBox.Location, new Size(internalBoundingBox.Width, internalBoundingBox.Height - PagingText.LayoutPosition.Height));
// Find the size of a test menu item. Use this to work out how many pages you need. We assume we're always laying this out vertically.
var testMenuItem = MenuItems.First();
testMenuItem.Layout(controlRenderers, systemContainer, handle, playerFov, spaceForMenuItems);
var itemHeight = testMenuItem.LayoutPosition.Height;
var itemCount = MenuItems.Count();
var itemsPerPage = spaceForMenuItems.Height / itemHeight;
var totalPages = (+itemsPerPage - 1) / itemsPerPage;
var selectedItemIndex = MenuItems.IndexOf(SelectedItem);
var page = selectedItemIndex / itemsPerPage;
// Find what page the selected item is on, and layout those items.
for (int i = 0; i < itemsPerPage; i++)
{
var displayIndex = page * itemsPerPage + i;
if (displayIndex < itemCount)
{
MenuItem item = MenuItems[displayIndex];
item.Layout(controlRenderers, systemContainer, handle, playerFov, spaceForMenuItems);
Controls.Add(item);
spaceForMenuItems = spaceForMenuItems.ShrinkFromTop(item.LayoutPosition.Height);
}
}
// If page count > 1, add the page text. Otherwise make sure it's not in Controls.
if (totalPages > 1)
{
var pageTextPosition = new Rectangle(internalBoundingBox.Left, spaceForMenuItems.Bottom, internalBoundingBox.Width, internalBoundingBox.Bottom - spaceForMenuItems.Bottom);
PagingText.Layout(controlRenderers, systemContainer, handle, playerFov, pageTextPosition);
Controls.Add(PagingText);
}
if (ShrinkToContents)
{
CalculateOwnPosition(boundingBox);
}
ApplyAlignmentToContents(internalBoundingBox);
if (ShrinkToContents)
{
CalculateOwnPosition(boundingBox);
}
// Place the MenuSelectorControls arond the selected item.
PlaceSelectorControls(controlRenderers, systemContainer, handle, playerFov, boundingBox);
return(false);
}