/// <summary>
/// Adds a page to the collection.
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
public override int Add(UIElement element)
{
PanoramaPanelPage page = element as PanoramaPanelPage;
if (page == null)
{
throw new Exception("LauncherPanelPage expected!");
}
//parent.AddPage(page);
// Set up the page's parent reference
page.Parent = parent;
// Add children of the page to the parent
foreach (UIElement c in page)
{
parent.Children.Add(c);
}
// Disable transitions and refresh layout
parent.disableAnimation = true;
parent.InvalidateVisual();
return(base.Add(element));
}
protected void UpdateFluidLayout(Boolean ease)
{
if (disableAnimation)
{
InvalidateVisual();
}
else
{
for (int p = 0; p < pages.Count; p++)
{
PanoramaPanelPage page = pages[p];
for (int i = 0; i < page.Count; i++)
{
Rect cell = GetCellRect(p, i);
Storyboard transition = CreateTransition(page[i], new Point(cell.X, cell.Y),
TimeSpan.FromMilliseconds(DefaultTransitionDuration), Easing);
transition.Completed += (s, e) =>
{
if (dragging != null)
{
dragging.SetValue(ZIndexProperty, DragZ);
}
};
transition.Begin();
}
}
}
}
/// <summary>
/// Removes a page from the collection.
/// </summary>
/// <param name="element"></param>
public override void Remove(UIElement element)
{
PanoramaPanelPage page = element as PanoramaPanelPage;
if (page == null)
{
throw new Exception("LauncherPanelPage expected!");
}
//parent.RemovePage(page);
// Remove children from the parent
foreach (UIElement child in page)
{
parent.Children.Remove(child);
}
// Refresh parent layout
parent.disableAnimation = true;
parent.InvalidateVisual();
base.Remove(element);
}
protected override Size ArrangeOverride(Size finalSize)
{
bool needEasing = !disableAnimation;
// If animation is disabled, reinitialize the layout
if (disableAnimation && Children.Count > 0)
{
for (int p = 0; p < pages.Count; p++)
{
PanoramaPanelPage page = pages[p];
for (int i = 0; i < page.Count; i++)
{
// Get the cell position
Rect cell = GetCellRect(p, i);
// Arrange the element at (0, 0)...
page[i].Arrange(new Rect(0, 0, CellWidth, CellHeight));
// ...then move it to the correct location
page[i].RenderTransform = CreateTransform(cell.X, cell.Y, DefaultScale, DefaultScale);
}
}
if (!DesignerProperties.GetIsInDesignMode(this))
{
disableAnimation = false;
}
}
// Update the layout
UpdateFluidLayout(needEasing);
// Return parent panel size
return(Orientation == Orientation.Horizontal
? new Size(PageWidth * PageCount, PageHeight)
: new Size(PageWidth, PageHeight * PageCount));
}
