private void UnrealizeItems()
{
var window = GetRealizationWindow();
foreach (var item in MainPanel.Children)
{
var itemTop = Canvas.GetTop(item);
if (itemTop < window.Top || itemTop > window.Bottom)
{
MainPanel.Children.Remove(item);
GalleryThumbnailTemplate container = item as GalleryThumbnailTemplate;
(container.Tag as LayoutInfo).IsRendered = false;
containerCache.Put(container);
}
}
}
private void RealizeOneItem(LayoutInfo i)
{
//if (i.IsRendered)
// return;
var container = containerCache.Get();
if (container == null)
{
container = new GalleryThumbnailTemplate();
}
container.Tapped += Container_Tapped;
container.SetLayout(i.Content);
container.Tag = i;
Canvas.SetLeft(container, i.Left);
Canvas.SetTop(container, i.Top);
MainPanel.Children.Add(container);
i.IsRendered = true;
}
private async void RealizeOneItem(LayoutInfo i)
{
var availableSize = await GetAvailableSize();
var container = containerCache.Get();
if (container == null)
{
container = new GalleryThumbnailTemplate();
}
container.Tapped += Container_Tapped;
container.SetLayout(availableSize, i.Content);
container.Tag = i;
Canvas.SetLeft(container, i.Left);
Canvas.SetTop(container, i.Top);
MainPanel.Children.Add(container);
i.IsRendered = true;
}