[PATCH 0/1] MR7156: winex11: Keep track of whether the window has been moved offscreen by the WM.

[Rémi Bernon (＠rbernon)]

Instead of relying on the current X window rect, which may be offscreen
for other reasons.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57689

[PATCH 1/1] winex11: Keep track of whether the window has been moved offscreen by the WM.

[Rémi Bernon]

From: Rémi Bernon

Instead of relying on the current X window rect, which may be offscreen
for other reasons.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57689
---
 dlls/winex11.drv/window.c | 6 +++---
 dlls/winex11.drv/x11drv.h | 1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 194e41e674e..32c3800abfe 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1603,7 +1603,7 @@ static UINT window_update_client_config( struct x11drv_win_data *data )
     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 ((data->is_offscreen = !is_window_rect_mapped( &new_rect ))) flags |= SWP_NOMOVE;

if ((flags & (SWP_NOSIZE | SWP_NOMOVE)) == (SWP_NOSIZE | SWP_NOMOVE)) return 0;

@@ -1801,8 +1801,8 @@ static void sync_window_position( struct x11drv_win_data *data, UINT swp_flags,

/* if the window has been moved offscreen by the window manager, we didn't tell the Win32 side about it */
     window_rect = window_rect_from_visible( old_rects, data->desired_state.rect );
-    if (!is_window_rect_mapped( &window_rect )) OffsetRect( &new_rect, window_rect.left - old_rects->window.left,
-                                                            window_rect.top - old_rects->window.top );
+    if (data->is_offscreen) OffsetRect( &new_rect, window_rect.left - old_rects->window.left,
+                                        window_rect.top - old_rects->window.top );

window_set_config( data, &new_rect, above );
 }
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index 995df13e843..ee5bbe07dd4 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -634,6 +634,7 @@ struct x11drv_win_data
     UINT        add_taskbar : 1; /* does window should be added to taskbar regardless of style */
     UINT        net_wm_fullscreen_monitors_set : 1; /* is _NET_WM_FULLSCREEN_MONITORS set */
     UINT        is_fullscreen : 1; /* is the window visible rect fullscreen */
+    UINT        is_offscreen : 1; /* has been moved offscreen by the window manager */
     UINT        parent_invalid : 1; /* is the parent host window possibly invalid */
     Window      embedder;       /* window id of embedder */
     Pixmap         icon_pixmap;

[Rémi Bernon (＠rbernon)]

This will fix several misplaced window issues, which happen in some cases with multiple monitors. I know this is very late for more changes, and another option would be to revert both 710b94e212501727b3b1b8deea06a7757df43d51 and b936f7426e33508538f48f7d20e7d7cb47cc1f32 (and reintroduce some imo smaller regression instead).