File mutter-SLE-bsc984738-grab-display.patch of Package mutter.10496
diff --git a/src/core/display-private.h b/src/core/display-private.h
index 531c6f7..aaa90ec 100644
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -174,6 +174,8 @@ struct _MetaDisplay
GHashTable *stamps;
GHashTable *wayland_windows;
+ int server_grab_count;
+
/* serials of leave/unmap events that may
* correspond to an enter event we should
* ignore
@@ -322,6 +324,8 @@ struct _MetaDisplayClass
gboolean meta_display_open (void);
void meta_display_close (MetaDisplay *display,
guint32 timestamp);
+void meta_display_grab (MetaDisplay *display);
+void meta_display_ungrab (MetaDisplay *display);
void meta_display_unmanage_windows_for_screen (MetaDisplay *display,
MetaScreen *screen,
diff --git a/src/core/display.c b/src/core/display.c
index 4c7a00e..87e3307 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -585,6 +585,7 @@ meta_display_open (void)
display->focus_serial = 0;
display->server_focus_window = None;
display->server_focus_serial = 0;
+ display->server_grab_count = 0;
display->mouse_mode = TRUE; /* Only relevant for mouse or sloppy focus */
display->allow_terminal_deactivation = TRUE; /* Only relevant for when a
@@ -1130,6 +1131,50 @@ meta_display_close (MetaDisplay *display,
meta_quit (META_EXIT_SUCCESS);
}
+/* Grab/ungrab routines taken from fvwm.
+ * Calling this function will cause X to ignore all other clients until
+ * you ungrab. This may not be quite as bad as it sounds, yet there is
+ * agreement that avoiding server grabs except when they are clearly needed
+ * is a good thing.
+ *
+ * If you do use such grabs, please clearly explain the necessity for their
+ * usage in a comment. Try to keep their scope extremely limited. In
+ * particular, try to avoid emitting any signals or notifications while
+ * a grab is active (if the signal receiver tries to block on an X request
+ * from another client at this point, you will have a deadlock).
+ */
+void
+meta_display_grab (MetaDisplay *display)
+{
+ if (display->server_grab_count == 0)
+ {
+ XGrabServer (display->xdisplay);
+ }
+ display->server_grab_count += 1;
+ meta_verbose ("Grabbing display, grab count now %d\n",
+ display->server_grab_count);
+}
+
+void
+meta_display_ungrab (MetaDisplay *display)
+{
+ if (display->server_grab_count == 0)
+ meta_bug ("Ungrabbed non-grabbed server\n");
+
+ display->server_grab_count -= 1;
+ if (display->server_grab_count == 0)
+ {
+ /* FIXME we want to purge all pending "queued" stuff
+ * at this point, such as window hide/show
+ */
+ XUngrabServer (display->xdisplay);
+ XFlush (display->xdisplay);
+ }
+
+ meta_verbose ("Ungrabbing display, grab count now %d\n",
+ display->server_grab_count);
+}
+
/**
* meta_display_for_x_display:
* @xdisplay: An X display
@@ -1516,7 +1561,7 @@ request_xserver_input_focus_change (MetaDisplay *display,
* we know which is which by making two requests that the server will
* process at the same time.
*/
- XGrabServer (display->xdisplay);
+ meta_display_grab (display);
serial = XNextRequest (display->xdisplay);
@@ -1529,8 +1574,7 @@ request_xserver_input_focus_change (MetaDisplay *display,
display->atom__MUTTER_FOCUS_SET,
XA_STRING, 8, PropModeAppend, NULL, 0);
- XUngrabServer (display->xdisplay);
- XFlush (display->xdisplay);
+ meta_display_ungrab (display);
meta_display_update_focus_window (display,
meta_window,
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index ed34aea..a989200 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -979,6 +979,9 @@ meta_display_grab_window_buttons (MetaDisplay *display,
{
MetaKeyBindingManager *keys = &display->key_binding_manager;
+ if (display->server_grab_count > 0)
+ return;
+
/* Grab Alt + button1 for moving window.
* Grab Alt + button2 for resizing window.
* Grab Alt + button3 for popping up window menu.
@@ -1015,6 +1018,9 @@ meta_display_ungrab_window_buttons (MetaDisplay *display,
{
MetaKeyBindingManager *keys = &display->key_binding_manager;
+ if (display->server_grab_count > 0)
+ return;
+
if (keys->window_grab_modifiers == 0)
return;
@@ -1041,6 +1047,9 @@ meta_display_grab_focus_window_button (MetaDisplay *display,
{
MetaKeyBindingManager *keys = &display->key_binding_manager;
+ if (display->server_grab_count > 0)
+ return;
+
/* Grab button 1 for activating unfocused windows */
meta_verbose ("Grabbing unfocused window buttons for %s\n", window->desc);
@@ -1080,6 +1089,9 @@ meta_display_ungrab_focus_window_button (MetaDisplay *display,
{
MetaKeyBindingManager *keys = &display->key_binding_manager;
+ if (display->server_grab_count > 0)
+ return;
+
meta_verbose ("Ungrabbing unfocused window buttons for %s\n", window->desc);
if (!window->have_focus_click_grab)
@@ -1309,6 +1321,9 @@ meta_window_grab_keys (MetaWindow *window)
MetaDisplay *display = window->display;
MetaKeyBindingManager *keys = &display->key_binding_manager;
+ if (display->server_grab_count > 0)
+ return;
+
if (window->all_keys_grabbed)
return;
@@ -1348,6 +1363,9 @@ meta_window_ungrab_keys (MetaWindow *window)
MetaDisplay *display = window->display;
MetaKeyBindingManager *keys = &display->key_binding_manager;
+ if (display->server_grab_count > 0)
+ return;
+
if (window->grab_on_frame &&
window->frame != NULL)
change_window_keygrabs (keys, window->frame->xwindow, FALSE);
diff --git a/src/x11/window-x11.c b/src/x11/window-x11.c
index 3d47f0d..5ea1213 100644
--- a/src/x11/window-x11.c
+++ b/src/x11/window-x11.c
@@ -507,6 +507,8 @@ meta_window_x11_manage (MetaWindow *window)
meta_icon_cache_init (&priv->icon_cache);
+ meta_display_grab (display);
+
meta_display_register_x_window (display, &window->xwindow, window);
/* assign the window to its group, or create a new group if needed */
@@ -565,6 +567,13 @@ meta_window_x11_manage (MetaWindow *window)
meta_window_x11_update_shape_region (window);
meta_window_x11_update_input_region (window);
+
+ meta_display_ungrab (display);
+
+ /* Perform operations prevented by grab */
+ if (window->frame)
+ meta_display_grab_window_buttons (display, window->frame->xwindow);
+ meta_window_grab_keys (window);
}
static void
