private void ScrollerTestHooks_AnchorEvaluated(Scroller sender, ScrollerTestHooksAnchorEvaluatedEventArgs args)
{
string anchorName;
Border newAnchor = null;
if (args.AnchorElement == null)
{
anchorName = "null";
}
else
{
if (args.AnchorElement is FrameworkElement)
{
FrameworkElement anchorElementAsFE = args.AnchorElement as FrameworkElement;
if (string.IsNullOrWhiteSpace(anchorElementAsFE.Name))
{
anchorName = "unnamed-FE";
}
else
{
anchorName = anchorElementAsFE.Name;
}
newAnchor = anchorElementAsFE as Border;
}
else
{
anchorName = "UIE";
}
}
if (newAnchor != currentAnchor)
{
if (currentAnchor != null)
{
currentAnchor.BorderBrush = chartreuseBrush;
}
if (newAnchor != null)
{
newAnchor.BorderBrush = orangeBrush;
}
currentAnchor = newAnchor;
}
if (double.IsNaN(args.ViewportAnchorPointHorizontalOffset) && double.IsNaN(args.ViewportAnchorPointVerticalOffset))
{
cnsAnchorPoint.Visibility = Visibility.Collapsed;
}
else
{
cnsAnchorPoint.Visibility = Visibility.Visible;
if (double.IsNaN(args.ViewportAnchorPointHorizontalOffset))
{
rectAnchorPoint.Width = scroller.Width;
Canvas.SetLeft(rectAnchorPoint, 0);
}
else
{
rectAnchorPoint.Width = double.IsNaN(args.ViewportAnchorPointVerticalOffset) ? 2 : 4;
Canvas.SetLeft(rectAnchorPoint, args.ViewportAnchorPointHorizontalOffset * scroller.ZoomFactor - scroller.HorizontalOffset - rectAnchorPoint.Width / 2);
}
if (double.IsNaN(args.ViewportAnchorPointVerticalOffset))
{
rectAnchorPoint.Height = scroller.Height;
Canvas.SetTop(rectAnchorPoint, 0);
}
else
{
rectAnchorPoint.Height = double.IsNaN(args.ViewportAnchorPointHorizontalOffset) ? 2 : 4;
Canvas.SetTop(rectAnchorPoint, args.ViewportAnchorPointVerticalOffset * scroller.ZoomFactor - scroller.VerticalOffset - rectAnchorPoint.Height / 2);
}
}
if (chkLogScrollerAnchorNotifications.IsChecked == true)
{
AppendAsyncEventMessage(" AnchorEvaluated: s:" + sender.Name + ", a:" + anchorName + ", ap:(" + (int)args.ViewportAnchorPointHorizontalOffset + ", " + (int)args.ViewportAnchorPointVerticalOffset + ")");
}
}
private void ScrollerTestHooks_AnchorEvaluated(Scroller sender, ScrollerTestHooksAnchorEvaluatedEventArgs args)
{
string anchorName = (args.AnchorElement is FrameworkElement) ? (args.AnchorElement as FrameworkElement).Name : string.Empty;
Log.Comment(" AnchorEvaluated: s:" + sender.Name + ", a:" + anchorName + ", ap:(" + args.ViewportAnchorPointHorizontalOffset + "," + args.ViewportAnchorPointVerticalOffset + ")");
}
