static FontImage()
{
RegisterFont("Segoe UI Symbol", new FontFamily("Segoe UI Symbol"));
var dpi = ScreenHelper.GetDpi().Width;
RenderingEmSize = dpi / 96d;
}
private void OnOpened(object sender, EventArgs e)
{
if (_parentElement is null)
{
return;
}
var window = AssociatedObject.FindLogicalOrVisualAncestorByType <Window>();
var screenBounds = ScreenHelper.GetScreenBounds(window);
var currentScreenWidth = screenBounds.Width + screenBounds.X;
var rightCornerPointOnScreen = _parentElement.PointToScreen(new Point(_parentElement.ActualWidth, 0)).X;
var dpi = ScreenHelper.GetDpi().Width / 96d;
var width = _parentElement.ActualWidth;
if (currentScreenWidth > rightCornerPointOnScreen)
{
var leftCornerPointOnScreen = _parentElement.PointToScreen(new Point(0, 0)).X;
if (leftCornerPointOnScreen < screenBounds.X)
{
width = (rightCornerPointOnScreen - screenBounds.X) / dpi;
}
}
else
{
width = (_parentElement.ActualWidth * dpi - (rightCornerPointOnScreen - currentScreenWidth)) / dpi;
}
if (width < 0)
{
width = _parentElement.ActualWidth;
}
AssociatedObject.SetCurrentValue(FrameworkElement.WidthProperty, width);
}