[PATCH v3 1/5] winex11.drv: Sync window positions in a WM_X11DRV_DESKTOP_RESIZED message.

[Rémi Bernon]

From: Rémi Bernon

After desktop is resized, instead of doing it only for the current
process windows.
---
 dlls/winex11.drv/desktop.c | 22 +++++++++++++---------
 dlls/winex11.drv/display.c | 34 ----------------------------------
 dlls/winex11.drv/window.c  | 23 +++++++++++++++++++++++
 dlls/winex11.drv/x11drv.h  |  1 +
 4 files changed, 37 insertions(+), 43 deletions(-)

diff --git a/dlls/winex11.drv/desktop.c b/dlls/winex11.drv/desktop.c
index 3da8f92978d..f593ca32e50 100644
--- a/dlls/winex11.drv/desktop.c
+++ b/dlls/winex11.drv/desktop.c
@@ -456,6 +456,7 @@ static void update_desktop_fullscreen( unsigned int width, unsigned int height)
  */
 void X11DRV_resize_desktop(void)
 {
+    static RECT old_virtual_rect;
     RECT primary_rect, virtual_rect;
     HWND hwnd = NtUserGetDesktopWindow();
     INT width, height;
@@ -468,14 +469,17 @@ void X11DRV_resize_desktop(void)
     if (NtUserGetWindowThread( hwnd, NULL ) != GetCurrentThreadId())
     {
         send_message( hwnd, WM_X11DRV_RESIZE_DESKTOP, 0, 0 );
+        return;
     }
-    else
-    {
-        TRACE( "desktop %p change to (%dx%d)\n", hwnd, width, height );
-        update_desktop_fullscreen( width, height );
-        NtUserSetWindowPos( hwnd, 0, virtual_rect.left, virtual_rect.top,
-                            virtual_rect.right - virtual_rect.left, virtual_rect.bottom - virtual_rect.top,
-                            SWP_NOZORDER | SWP_NOACTIVATE | SWP_DEFERERASE );
-        ungrab_clipping_window();
-    }
+
+    TRACE( "desktop %p change to (%dx%d)\n", hwnd, width, height );
+    update_desktop_fullscreen( width, height );
+    NtUserSetWindowPos( hwnd, 0, virtual_rect.left, virtual_rect.top,
+                        virtual_rect.right - virtual_rect.left, virtual_rect.bottom - virtual_rect.top,
+                        SWP_NOZORDER | SWP_NOACTIVATE | SWP_DEFERERASE );
+    ungrab_clipping_window();
+    send_message_timeout( HWND_BROADCAST, WM_X11DRV_DESKTOP_RESIZED, old_virtual_rect.left,
+                          old_virtual_rect.top, SMTO_ABORTIFHUNG, 2000, FALSE );
+
+    old_virtual_rect = virtual_rect;
 }
diff --git a/dlls/winex11.drv/display.c b/dlls/winex11.drv/display.c
index 76defa7f0e8..b552c52cb56 100644
--- a/dlls/winex11.drv/display.c
+++ b/dlls/winex11.drv/display.c
@@ -560,47 +560,13 @@ void X11DRV_DisplayDevices_RegisterEventHandlers(void)

void X11DRV_DisplayDevices_Update(void)
 {
-    RECT old_virtual_rect, new_virtual_rect;
     DWORD tid, pid;
     HWND foreground;
-    UINT mask = 0, i;
-    HWND *list;

-    old_virtual_rect = NtUserGetVirtualScreenRect();
     X11DRV_DisplayDevices_Init(TRUE);
-    new_virtual_rect = NtUserGetVirtualScreenRect();
-
-    /* Calculate XReconfigureWMWindow() mask */
-    if (old_virtual_rect.left != new_virtual_rect.left)
-        mask |= CWX;
-    if (old_virtual_rect.top != new_virtual_rect.top)
-        mask |= CWY;

X11DRV_resize_desktop();

-    list = build_hwnd_list();
-    for (i = 0; list && list[i] != HWND_BOTTOM; i++)
-    {
-        struct x11drv_win_data *data;
-
-        if (!(data = get_win_data( list[i] ))) continue;
-
-        /* update the full screen state */
-        update_net_wm_states(data);
-
-        if (mask && data->whole_window)
-        {
-            POINT pos = virtual_screen_to_root(data->whole_rect.left, data->whole_rect.top);
-            XWindowChanges changes;
-            changes.x = pos.x;
-            changes.y = pos.y;
-            XReconfigureWMWindow(data->display, data->whole_window, data->vis.screen, mask, &changes);
-        }
-        release_win_data(data);
-    }
-
-    free( list );
-
     /* forward clip_fullscreen_window request to the foreground window */
     if ((foreground = NtUserGetForegroundWindow()) &&
         (tid = NtUserGetWindowThread( foreground, &pid )) && pid == GetCurrentProcessId())
diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index a7030f69759..6e2da167182 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -2995,6 +2995,29 @@ LRESULT X11DRV_WindowMessage( HWND hwnd, UINT msg, WPARAM wp, LPARAM lp )
     case WM_X11DRV_RESIZE_DESKTOP:
         X11DRV_resize_desktop();
         return 0;
+    case WM_X11DRV_DESKTOP_RESIZED:
+        if ((data = get_win_data( hwnd )))
+        {
+            /* update the full screen state */
+            update_net_wm_states( data );
+
+            if (data->whole_window)
+            {
+                /* sync window position with the new virtual screen rect */
+                POINT old_pos = {.x = data->whole_rect.left - wp, .y = data->whole_rect.top - lp};
+                POINT pos = virtual_screen_to_root( data->whole_rect.left, data->whole_rect.top );
+                XWindowChanges changes = {.x = pos.x, .y = pos.y};
+                UINT mask = 0;
+
+                if (old_pos.x != pos.x) mask |= CWX;
+                if (old_pos.y != pos.y) mask |= CWY;
+
+                if (mask) XReconfigureWMWindow( data->display, data->whole_window, data->vis.screen, mask, &changes );
+            }
+
+            release_win_data( data );
+        }
+        return 0;
     case WM_X11DRV_SET_CURSOR:
     {
         Window win = 0;
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index d1a70da9998..fc646771acd 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -573,6 +573,7 @@ enum x11drv_window_messages
     WM_X11DRV_UPDATE_CLIPBOARD = 0x80001000,
     WM_X11DRV_SET_WIN_REGION,
     WM_X11DRV_RESIZE_DESKTOP,
+    WM_X11DRV_DESKTOP_RESIZED,
     WM_X11DRV_SET_CURSOR,
     WM_X11DRV_CLIP_CURSOR_NOTIFY,
     WM_X11DRV_CLIP_CURSOR_REQUEST,