public void RemoveLayerOverlay(Layer layer, DocumentLayerOverlay overlay, RectInt32?invalidateRect)
{
DocumentLayerOverlay overlay2;
Validate.Begin().IsNotNull <Layer>(layer, "layer").IsNotNull <DocumentLayerOverlay>(overlay, "overlay").Check();
base.VerifyAccess();
if (!this.overlays.TryGetValue(layer, out overlay2))
{
throw new KeyNotFoundException();
}
if (overlay2 != overlay)
{
throw new InvalidOperationException();
}
this.overlays.Remove(layer);
this.documentRenderer.RemoveLayerOverlay(layer);
overlay.Cancel();
if (invalidateRect.HasValue)
{
if (invalidateRect.Value.HasPositiveArea)
{
layer.Invalidate(invalidateRect.Value);
}
}
else
{
layer.Invalidate(overlay.AffectedBounds);
}
}
public void ReplaceLayerOverlay(Layer layer, DocumentLayerOverlay oldOverlay, DocumentLayerOverlay newOverlay, RectInt32?invalidateRect)
{
DocumentLayerOverlay overlay;
base.VerifyAccess();
if ((oldOverlay == null) && (newOverlay == null))
{
throw new ArgumentNullException();
}
this.overlays.TryGetValue(layer, out overlay);
if (overlay != oldOverlay)
{
throw new InvalidOperationException();
}
if ((oldOverlay == null) && (newOverlay != null))
{
this.SetLayerOverlay(layer, newOverlay, invalidateRect);
}
else if (newOverlay == null)
{
this.RemoveLayerOverlay(layer, overlay, invalidateRect);
}
else
{
if (newOverlay.IsCancellationRequested)
{
throw new InvalidOperationException("Cannot set an overlay which is already cancelled");
}
this.overlays[layer] = newOverlay;
this.documentRenderer.ReplaceLayerOverlay(layer, newOverlay);
oldOverlay.Cancel();
if (invalidateRect.HasValue)
{
if (invalidateRect.Value.HasPositiveArea)
{
layer.Invalidate(invalidateRect.Value);
}
}
else
{
RectInt32?nullable = (oldOverlay == null) ? null : new RectInt32?(oldOverlay.AffectedBounds);
RectInt32?nullable2 = (newOverlay == null) ? null : new RectInt32?(newOverlay.AffectedBounds);
RectInt32?nullable3 = RectInt32Util.Union(nullable, nullable2);
if (nullable3.HasValue && nullable3.Value.HasPositiveArea)
{
layer.Invalidate(nullable3.Value);
}
}
}
}