[PATCH v2 0/1] MR6926: winex11: Don't tell win32 about offscreen window position.

[Rémi Bernon (＠rbernon)]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57472

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57474

--
  v2: winex11: Don't update Win32 window position for offscreen windows.

https://gitlab.winehq.org/wine/wine/-/merge_requests/6926

[PATCH v2 1/1] winex11: Don't update Win32 window position for offscreen windows.

[Rémi Bernon]

From: Rémi Bernon

The window manager might decide to move window outside of what we
believe is the virtual screen, for instance to implement virtual
desktops, or for embedded windows.

We don't need to tell Win32 about it, as it will otherwise end up
triggering the offscreen window logic in WindowPosChanged. We want to
keep that offscreen window logic for windows which are moved offscreen
by applications to hide them.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57472
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57474
---
 dlls/winex11.drv/window.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 1a341adc921..b99c96f644b 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1593,6 +1593,9 @@ static UINT window_update_client_config( struct x11drv_win_data *data )
     if (rect.right == old_rect.right && rect.bottom == old_rect.bottom) flags |= SWP_NOSIZE;
     else if (IsRectEmpty( &rect )) flags |= SWP_NOSIZE;

+    /* don't sync win32 position for offscreen windows */
+    if (!is_window_rect_mapped( &new_rect )) flags |= SWP_NOMOVE;
+
     if ((flags & (SWP_NOSIZE | SWP_NOMOVE)) == (SWP_NOSIZE | SWP_NOMOVE)) return 0;

/* avoid event feedback loops from window rect adjustments of maximized / fullscreen windows */

[Rémi Bernon (＠rbernon)]

Updated to a simpler change which I believe still works. We can simply avoid telling the Win32 side of the window position change when they are offscreen. This is only for when the window manager itself moves them offscreen, and it avoids getting back into WindowPosChanged and triggering that offscreen window hiding logic.