public override Geometry PositionAndDisplay(Geometry reservedSpace)
{
var spanBoundsTmp = GetVisualSpanBounds();
if (spanBoundsTmp == null || spanBoundsTmp.Value.IsEmpty)
{
return(null);
}
var spanBounds = WpfHexViewRectToScreenRect(spanBoundsTmp.Value);
var desiredSize = ToScreenSize(PopupSize);
var screen = new Screen(wpfHexView.VisualElement);
var screenRect = screen.IsValid ? screen.DisplayRect : SystemParameters.WorkArea;
Rect?popupRect = null;
if ((style & VSTA.PopupStyles.PositionClosest) != 0)
{
foreach (var pos in GetValidPositions(screenRect, reservedSpace, desiredSize, spanBounds, style))
{
popupRect = GetClosest(spanBounds, popupRect, pos, style);
}
}
else
{
foreach (var pos in GetValidPositions(screenRect, reservedSpace, desiredSize, spanBounds, style))
{
popupRect = pos;
break;
}
}
if (popupRect == null)
{
return(null);
}
var viewRelativeRect = HexPopupHelper.TransformFromDevice(wpfHexView, popupRect.Value);
bool isOpen = popup.IsOpen;
if (!isOpen)
{
AddEvents();
}
if (popupZoomLevel != wpfHexView.ZoomLevel)
{
// Must set IsOpen to false when setting a new scale transform
popup.IsOpen = false;
HexPopupHelper.SetScaleTransform(wpfHexView, popup);
popupZoomLevel = wpfHexView.ZoomLevel;
}
if (!isOpen)
{
popup.Child = content;
popup.Visibility = Visibility.Visible;
}
popup.VerticalOffset = viewRelativeRect.Top;
popup.HorizontalOffset = viewRelativeRect.Left;
popup.IsOpen = true;
return(new RectangleGeometry(popupRect.Value));
}
Size ToScreenSize(Size size) => HexPopupHelper.TransformToDevice(wpfHexView, size);