internal static void DoWindowTitleThumbChangeWindowStateOnMouseDoubleClick(WindowChromeWindow window, MouseButtonEventArgs mouseButtonEventArgs)
{
// restore/maximize only with left button
if (mouseButtonEventArgs.ChangedButton == MouseButton.Left)
{
// we can maximize or restore the window if the title bar height is set (also if title bar is hidden)
var canResize = window.ResizeMode == ResizeMode.CanResizeWithGrip || window.ResizeMode == ResizeMode.CanResize;
var mousePos = Mouse.GetPosition(window);
var isMouseOnTitlebar = mousePos.Y <= window.TitleBarHeight && window.TitleBarHeight > 0;
if (canResize && isMouseOnTitlebar)
{
#pragma warning disable 618
if (window.WindowState == WindowState.Normal)
{
ControlzEx.Windows.Shell.SystemCommands.MaximizeWindow(window);
}
else
{
ControlzEx.Windows.Shell.SystemCommands.RestoreWindow(window);
}
#pragma warning restore 618
mouseButtonEventArgs.Handled = true;
}
}
}
internal static void DoWindowTitleThumbOnPreviewMouseLeftButtonUp(WindowChromeWindow window, MouseButtonEventArgs mouseButtonEventArgs)
{
if (mouseButtonEventArgs.Source == mouseButtonEventArgs.OriginalSource)
{
Mouse.Capture(null);
}
}
internal static void DoWindowTitleThumbSystemMenuOnMouseRightButtonUp(WindowChromeWindow window, MouseButtonEventArgs e)
{
//if (window.ShowSystemMenuOnRightClick)
//{
// // show menu only if mouse pos is on title bar or if we have a window with none style and no title bar
// var mousePos = e.GetPosition(window);
// if ((mousePos.Y <= window.TitleBarHeight && window.TitleBarHeight > 0) || (window.UseNoneWindowStyle && window.TitleBarHeight <= 0))
// {
// ShowSystemMenuPhysicalCoordinates(window, window.PointToScreen(mousePos));
// }
//}
}
internal static void DoWindowTitleThumbMoveOnDragDelta(IWindowsTitleThumb thumb, [NotNull] WindowChromeWindow window, DragDeltaEventArgs dragDeltaEventArgs)
{
if (thumb == null)
{
throw new ArgumentNullException(nameof(thumb));
}
if (window == null)
{
throw new ArgumentNullException(nameof(window));
}
// drag only if IsWindowDraggable is set to true
if (!window.IsWindowDraggable ||
(!(Math.Abs(dragDeltaEventArgs.HorizontalChange) > 2) && !(Math.Abs(dragDeltaEventArgs.VerticalChange) > 2)))
{
return;
}
// tage from DragMove internal code
window.VerifyAccess();
//var cursorPos = WinApiHelper.GetPhysicalCursorPos();
// if the window is maximized dragging is only allowed on title bar (also if not visible)
var windowIsMaximized = window.WindowState == WindowState.Maximized;
var isMouseOnTitlebar = Mouse.GetPosition(thumb).Y <= window.TitleBarHeight && window.TitleBarHeight > 0;
if (!isMouseOnTitlebar && windowIsMaximized)
{
return;
}
#pragma warning disable 618
// for the touch usage
UnsafeNativeMethods.ReleaseCapture();
#pragma warning restore 618
if (windowIsMaximized)
{
//var cursorXPos = cursorPos.x;
EventHandler windowOnStateChanged = null;
windowOnStateChanged = (sender, args) =>
{
//window.Top = 2;
//window.Left = Math.Max(cursorXPos - window.RestoreBounds.Width / 2, 0);
window.StateChanged -= windowOnStateChanged;
if (window.WindowState == WindowState.Normal)
{
Mouse.Capture(thumb, CaptureMode.Element);
}
};
window.StateChanged += windowOnStateChanged;
}
var criticalHandle = window.CriticalHandle;
// DragMove works too
// window.DragMove();
// instead this 2 lines
#pragma warning disable 618
NativeMethods.SendMessage(criticalHandle, WM.SYSCOMMAND, (IntPtr)SC.MOUSEMOVE, IntPtr.Zero);
NativeMethods.SendMessage(criticalHandle, WM.LBUTTONUP, IntPtr.Zero, IntPtr.Zero);
#pragma warning restore 618
}
