private static void RenderCurrentBoundary([NotNull] BoundaryChangedEventArgs args, [NotNull] Canvas drawCanvas)
{
var boundary = args.Boundary;
var top = boundary.BoundingRect.Top;
if (top.IsMinValue())
{
return;
}
Action <List <Boundary.Step> > render = steps =>
{
foreach (var step in steps)
{
drawCanvas.Children.Add(new Line
{
X1 = step.X,
Y1 = step.Top,
X2 = step.X,
Y2 = step.Bottom,
Stroke = new SolidColorBrush(Colors.Red),
StrokeThickness = 2
});
}
};
render(boundary.Left);
render(boundary.Right);
}
private void StateBoundaryChanged(object sender, BoundaryChangedEventArgs args)
{
if (args.State.CurrentOperation > LayoutState.Operation.VerticalLayout && args.State.CurrentOperation < LayoutState.Operation.Completed)
{
Dispatcher.RunAsync(CoreDispatcherPriority.High, () =>
{
FireListViewPropertyChanged(m_diagram.VisualTree);
RenderBoxes(m_diagram.VisualTree, DrawCanvas);
RenderCurrentBoundary(args, DrawCanvas);
});
// wait until user releases the wait handle
try
{
m_progressWaitHandle?.WaitOne();
}
catch (ObjectDisposedException)
{
// silently exit if this wait handle is not longer valid
args.State.BoundaryChanged -= StateBoundaryChanged;
args.State.OperationChanged -= StateOperationChanged;
}
}
}
