public CachedTile([NotNull] Panel container, PositionKey key, double x, double y)
{
_key = key;
_x = x;
_y = y;
State = TileState.Locked;
UiCanvas = Win2dCanvasManager.Employ(container, this, x, y);
}
/// <summary>
/// Remove a control from display and return it to the pool
/// </summary>
public static void Retire(CanvasControlAsyncProxy ctrl)
{
if (ctrl == null)
{
return;
}
ctrl.RemoveFromContainer();
ctrl.QueueAction(canv => {
if (canv != null)
{
canv.Draw -= _drawHub.Draw;
}
});
}
public static CanvasControlAsyncProxy Employ([NotNull] Panel container, [NotNull] CachedTile cachedTile, double x, double y)
{
// Need a new canvas
var proxy = new CanvasControlAsyncProxy(container);
var targetTile = cachedTile;
container.Dispatcher?.RunAsync(CoreDispatcherPriority.High, () =>
{
var ctrl = new CanvasControl
{
Margin = new Thickness(0.0),
Height = 256,
Width = 256,
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
UseLayoutRounding = false,
RenderTransform = new TranslateTransform
{
X = x,
Y = y
}
};
proxy.QueueAction(canv =>
{
// We have a single common 'Draw' event hook and use context data to pump in image & state
if (canv == null)
{
return;
}
canv.Draw += _drawHub.Draw;
});
proxy.AttachToContainer(ctrl, container, targetTile);
});
return(proxy);
}
