/// <summary>
/// Converts a rectangle from an Avalon Rect to a Win32 RECT
/// </summary>
/// <remarks>
/// Rounds "double" values to the nearest "int"
/// </remarks>
/// <param name="rect">
/// The rectangle as an Avalon Rect
/// </param>
/// <returns>
/// The rectangle as a Win32 RECT
/// </returns>
internal static NativeMethods.RECT FromRect(Rect rect)
{
NativeMethods.RECT rc = new NativeMethods.RECT();
rc.top = DoubleUtil.DoubleToInt(rect.Y);
rc.left = DoubleUtil.DoubleToInt(rect.X);
rc.bottom = DoubleUtil.DoubleToInt(rect.Bottom);
rc.right = DoubleUtil.DoubleToInt(rect.Right);
return rc;
}
/// <summary>
/// Cache the screen bounds of the monitor in which the targetElement is rendered.
/// </summary>
/// <param name="itemsPresenter"></param>
/// <returns></returns>
public static Rect GetScreenBounds(FrameworkElement targetElement, Popup popup)
{
if (targetElement != null)
{
Rect targetBoundingBox = new Rect(targetElement.PointToScreen(new Point()),
targetElement.PointToScreen(new Point(targetElement.RenderSize.Width, targetElement.RenderSize.Height)));
NativeMethods.RECT rect = new NativeMethods.RECT() { top = 0, bottom = 0, left = 0, right = 0 };
NativeMethods.RECT nativeBounds = NativeMethods.FromRect(targetBoundingBox);
IntPtr monitor = NativeMethods.MonitorFromRect(ref nativeBounds, NativeMethods.MONITOR_DEFAULTTONEAREST);
if (monitor != IntPtr.Zero)
{
NativeMethods.MONITORINFOEX monitorInfo = new NativeMethods.MONITORINFOEX();
monitorInfo.cbSize = Marshal.SizeOf(typeof(NativeMethods.MONITORINFOEX));
NativeMethods.GetMonitorInfo(new HandleRef(null, monitor), monitorInfo);
// WPF Popup special cases MenuItem to be restricted to work area
// Hence Ribbon applies the same rules as well.
if (popup.TemplatedParent is RibbonMenuItem)
{
rect = monitorInfo.rcWork;
}
else if (popup.TemplatedParent is RibbonMenuButton)
{
rect = monitorInfo.rcMonitor;
}
}
return NativeMethods.ToRect(rect);
}
return Rect.Empty;
}