void OnCursorPositionChanged(object sender, CursorPositionChangedEventArgs args)
{
if (contentElement == null)
{
contentElement = GetTemplateChild("ContentElement");
}
if (contentElement != null && contentElement is ScrollViewer)
{
ScrollViewer scrollview = contentElement as ScrollViewer;
double offset = scrollview.HorizontalOffset;
// Note: for horizontal scrollage, we offset by 1.0 pixel for the width of the cursor ibeam
if (args.CursorX < offset)
{
// need to scroll to the left a bit
scrollview.ScrollToHorizontalOffset(Math.Max(args.CursorX - 1.0, 0.0));
}
else if (args.CursorX > offset + scrollview.ViewportWidth)
{
// need to scroll to the right
offset = (args.CursorX + 1.0) - scrollview.ViewportWidth;
scrollview.ScrollToHorizontalOffset(offset);
}
offset = scrollview.VerticalOffset;
if (args.CursorY < offset)
{
// need to scroll up a bit
scrollview.ScrollToVerticalOffset(args.CursorY);
}
else if (args.CursorY + args.CursorHeight > offset + scrollview.ViewportHeight)
{
// need to scroll down a bit
offset = (args.CursorY + args.CursorHeight) - Math.Max(args.CursorHeight, scrollview.ViewportHeight);
scrollview.ScrollToVerticalOffset(offset);
}
}
}
void OnCursorPositionChanged (object sender, CursorPositionChangedEventArgs args)
{
if (contentElement == null)
contentElement = GetTemplateChild ("ContentElement");
if (contentElement != null && contentElement is ScrollViewer) {
ScrollViewer scrollview = contentElement as ScrollViewer;
double offset = scrollview.HorizontalOffset;
// Note: for horizontal scrollage, we offset by 1.0 pixel for the width of the cursor ibeam
if (args.CursorX < offset) {
// need to scroll to the left a bit
scrollview.ScrollToHorizontalOffset (Math.Max (args.CursorX - 1.0, 0.0));
} else if (args.CursorX > offset + scrollview.ViewportWidth) {
// need to scroll to the right
offset = (args.CursorX + 1.0) - scrollview.ViewportWidth;
scrollview.ScrollToHorizontalOffset (offset);
}
offset = scrollview.VerticalOffset;
if (args.CursorY < offset) {
// need to scroll up a bit
scrollview.ScrollToVerticalOffset (args.CursorY);
} else if (args.CursorY + args.CursorHeight > offset + scrollview.ViewportHeight) {
// need to scroll down a bit
offset = (args.CursorY + args.CursorHeight) - Math.Max (args.CursorHeight, scrollview.ViewportHeight);
scrollview.ScrollToVerticalOffset (offset);
}
}
}
