[PATCH 1/5] winex11: Avoid requesting unnecessary _NET_WM_STATE changes.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/winex11.drv/window.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 58786d962cf..4992d8c42c4 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1211,9 +1211,10 @@ static void update_net_wm_fullscreen_monitors( struct x11drv_win_data *data )

static void window_set_net_wm_state( struct x11drv_win_data *data, UINT new_state )
 {
-    UINT i, count;
+    UINT i, count, old_state = data->pending_state.net_wm_state;

if (!data->whole_window) return; /* no window, nothing to update */
+    if (old_state == new_state) return; /* states are the same, nothing to update */

if (!data->mapped)  /* set the _NET_WM_STATE atom directly */
     {
@@ -1250,6 +1251,8 @@ static void window_set_net_wm_state( struct x11drv_win_data *data, UINT new_stat

for (i = 0; i < NB_NET_WM_STATES; i++)
         {
+            if (!((old_state ^ new_state) & (1 << i))) continue;
+
             xev.xclient.data.l[0] = (new_state & (1 << i)) ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
             xev.xclient.data.l[1] = X11DRV_Atoms[net_wm_state_atoms[i] - FIRST_XATOM];
             xev.xclient.data.l[2] = ((net_wm_state_atoms[i] == XATOM__NET_WM_STATE_MAXIMIZED_VERT) ?