private void _EnsureRectOverlayInitialized()
{
if (_rectOverlay == null)
{
_rectOverlay = new Rectangle();
_rectOverlay.Stroke = System.Windows.Media.Brushes.Red;
_rectOverlay.StrokeThickness = 2.0;
_canvas.SetOverlay(new UIElement[] { _rectOverlay });
}
}
private void _EnsureOverlayElementsInitialized()
{
// Assume if one hasn't been initalized we need to init all of them
if (_lineOverlay == null)
{
_lineOverlay = new Line();
_lineOverlay.Stroke = System.Windows.Media.Brushes.Red;
_lineOverlay.StrokeThickness = 2.0;
_mouseDownText = _CreateOverlayTextBlock();
_mouseFollowText = _CreateOverlayTextBlock();
_canvas.SetOverlay(_OverlayElements);
}
}
