public static void SetPosition(Window window, WindowPositionsInfo positionInfo)
{
if (positionInfo == null)
{
throw new ArgumentNullException(nameof(positionInfo));
}
if (!TryGetWindowPosition(positionInfo, out Rectangle position))
{
return;
}
window.WindowStartupLocation = WindowStartupLocation.Manual;
window.Left = position.X;
window.Top = position.Y;
if (position.Width > 0)
{
window.Width = position.Width;
}
if (position.Height > 0)
{
window.Height = position.Height;
}
if (positionInfo.DisplaySettings != null)
{
window.WindowState = positionInfo.DisplaySettings.Maximized ?
WindowState.Maximized :
WindowState.Normal;
}
}
private static bool TryGetWindowPosition(WindowPositionsInfo positionsInfo, out Rectangle position)
{
double left = 0, top = 0, width = 0, height = 0;
// use settings
if (positionsInfo.DisplaySettings != null)
{
// get screen
var screen = Screen.AllScreens
.FirstOrDefault(x => positionsInfo.DisplaySettings.Left >= x.Bounds.Left &&
positionsInfo.DisplaySettings.Left <= x.Bounds.Right &&
positionsInfo.DisplaySettings.Top >= x.Bounds.Top &&
positionsInfo.DisplaySettings.Top <= x.Bounds.Bottom);
if (screen != null)
{
if (positionsInfo.StartupLocation == WindowStartupLocation.CenterScreen)
{
if (positionsInfo.Width <= screen.Bounds.Width)
{
left = screen.Bounds.Left + (screen.Bounds.Width - positionsInfo.Width) / 2;
width = positionsInfo.Width;
}
else
{
left = screen.Bounds.Left;
width = screen.Bounds.Width;
}
if (positionsInfo.Height <= screen.Bounds.Height)
{
top = screen.Bounds.Top + (screen.Bounds.Height - positionsInfo.Height) / 2;
height = positionsInfo.Height;
}
else
{
top = screen.Bounds.Top;
height = screen.Bounds.Height;
}
}
else
{
left = positionsInfo.DisplaySettings.Left;
top = positionsInfo.DisplaySettings.Top;
width = positionsInfo.DisplaySettings.Width;
height = positionsInfo.DisplaySettings.Height;
if (left + width > screen.WorkingArea.Right)
{
var shiftLeft = left + width - screen.WorkingArea.Right;
if (shiftLeft > left - screen.WorkingArea.Left)
{
shiftLeft = shiftLeft - left + screen.WorkingArea.Left;
left = screen.WorkingArea.Left;
if (width - shiftLeft > screen.WorkingArea.Width)
{
width = screen.WorkingArea.Width;
}
else
{
width = width - shiftLeft;
}
}
else
{
left = left - shiftLeft;
}
}
if (top < 0)
{
top = 0;
}
if (top + height > screen.WorkingArea.Bottom)
{
var shiftTop = top + height - screen.WorkingArea.Bottom;
if (shiftTop > top - screen.WorkingArea.Top)
{
shiftTop = shiftTop - top + screen.WorkingArea.Top;
top = screen.WorkingArea.Top;
if (height - shiftTop > screen.WorkingArea.Height)
{
height = screen.WorkingArea.Height;
}
else
{
height = height - shiftTop;
}
}
else
{
top = top - shiftTop;
}
}
}
position = new Rectangle((int)left, (int)top, (int)width, (int)height);
return(true);
}
}
var primaryScreen = Screen.AllScreens.FirstOrDefault(x => x.Primary);
if (primaryScreen == null)
{
position = new Rectangle();
return(false);
}
if (positionsInfo.Width <= primaryScreen.WorkingArea.Width)
{
left = primaryScreen.WorkingArea.Left + (primaryScreen.WorkingArea.Width - positionsInfo.Width) / 2;
width = positionsInfo.Width;
}
else
{
left = primaryScreen.WorkingArea.Left;
width = primaryScreen.WorkingArea.Width;
}
if (positionsInfo.Height <= primaryScreen.WorkingArea.Height)
{
top = primaryScreen.WorkingArea.Top + (primaryScreen.WorkingArea.Height - positionsInfo.Height) / 2;
height = positionsInfo.Height;
}
else
{
top = primaryScreen.WorkingArea.Top;
height = primaryScreen.WorkingArea.Height;
}
position = new Rectangle((int)left, (int)top, (int)width, (int)height);
return(true);
}
