Rémi Bernon : winex11: Introduce a new detach_client_window helper.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ead277993218fac9c2d3f544930156b77f9702f3
URL:    https://gitlab.winehq.org/wine/wine/-/commit/ead277993218fac9c2d3f544930156b...

Author: Rémi Bernon <rbernon(a)codeweavers.com>
Date:   Tue Nov 28 10:57:42 2023 +0100

winex11: Introduce a new detach_client_window helper.

---

 dlls/winex11.drv/window.c | 44 +++++++++++++++++++++++++++++---------------
 1 file changed, 29 insertions(+), 15 deletions(-)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index a35e53079aa..031d754a3ef 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1587,6 +1587,31 @@ Window get_dummy_parent(void)
     return dummy_parent;
 }
 
+static void client_window_events_disable( struct x11drv_win_data *data, Window client_window )
+{
+    XSelectInput( data->display, client_window, 0 );
+    XFlush( data->display ); /* make sure XSelectInput doesn't use client_window after this point */
+    XDeleteContext( data->display, client_window, winContext );
+}
+
+/**********************************************************************
+ *		detach_client_window
+ */
+static void detach_client_window( struct x11drv_win_data *data, Window client_window )
+{
+    if (data->client_window != client_window || !client_window) return;
+
+    TRACE( "%p/%lx detaching client window %lx\n", data->hwnd, data->whole_window, client_window );
+
+    if (data->whole_window)
+    {
+        client_window_events_disable( data, client_window );
+        XReparentWindow( gdi_display, client_window, get_dummy_parent(), 0, 0 );
+    }
+
+    data->client_window = 0;
+}
+
 
 /**********************************************************************
  *		create_client_window
@@ -1609,12 +1634,7 @@ Window create_client_window( HWND hwnd, const XVisualInfo *visual, Colormap colo
         data->window_rect = data->whole_rect = data->client_rect;
     }
 
-    if (data->client_window)
-    {
-        XDeleteContext( data->display, data->client_window, winContext );
-        XReparentWindow( gdi_display, data->client_window, dummy_parent, 0, 0 );
-        TRACE( "%p reparent xwin %lx/%lx\n", data->hwnd, data->whole_window, data->client_window );
-    }
+    detach_client_window( data, data->client_window );
 
     attr.colormap = colormap;
     attr.bit_gravity = NorthWestGravity;
@@ -1635,11 +1655,11 @@ Window create_client_window( HWND hwnd, const XVisualInfo *visual, Colormap colo
                                                CWBackingStore | CWColormap | CWBorderPixel, &attr );
     if (data->client_window)
     {
-        XSaveContext( data->display, data->client_window, winContext, (char *)data->hwnd );
         XMapWindow( gdi_display, data->client_window );
         if (data->whole_window)
         {
             XFlush( gdi_display ); /* make sure client_window is created for XSelectInput */
+            XSaveContext( data->display, data->client_window, winContext, (char *)data->hwnd );
             XSync( data->display, False ); /* make sure client_window is known from data->display */
             XSelectInput( data->display, data->client_window, ExposureMask );
         }
@@ -1730,8 +1750,6 @@ static void destroy_whole_window( struct x11drv_win_data *data, BOOL already_des
 {
     TRACE( "win %p xwin %lx/%lx\n", data->hwnd, data->whole_window, data->client_window );
 
-    if (data->client_window) XDeleteContext( data->display, data->client_window, winContext );
-
     if (!data->whole_window)
     {
         if (data->embedded)
@@ -1753,12 +1771,8 @@ static void destroy_whole_window( struct x11drv_win_data *data, BOOL already_des
     }
     else
     {
-        if (data->client_window && !already_destroyed)
-        {
-            XSelectInput( data->display, data->client_window, 0 );
-            XFlush( data->display ); /* make sure XSelectInput doesn't use client_window after this point */
-            XReparentWindow( gdi_display, data->client_window, get_dummy_parent(), 0, 0 );
-        }
+        if (!already_destroyed) detach_client_window( data, data->client_window );
+        else if (data->client_window) client_window_events_disable( data, data->client_window );
         XDeleteContext( data->display, data->whole_window, winContext );
         if (!already_destroyed)
         {