static gboolean get_property (MetaDisplay *display, Window xwindow, Atom xatom, Atom req_type, GetPropertyResults *results) { results->display = display; results->xwindow = xwindow; results->xatom = xatom; results->prop = NULL; results->n_items = 0; results->type = None; results->bytes_after = 0; results->format = 0; meta_error_trap_push_with_return (display); if (XGetWindowProperty (display->xdisplay, xwindow, xatom, 0, G_MAXLONG, False, req_type, &results->type, &results->format, &results->n_items, &results->bytes_after, &results->prop) != Success || results->type == None) { if (results->prop) XFree (results->prop); meta_error_trap_pop_with_return (display, TRUE); return FALSE; } if (meta_error_trap_pop_with_return (display, TRUE) != Success) { if (results->prop) XFree (results->prop); return FALSE; } return TRUE; }
static void update_pixmap (MetaSurfaceActorX11 *self) { MetaSurfaceActorX11Private *priv = meta_surface_actor_x11_get_instance_private (self); MetaDisplay *display = priv->display; Display *xdisplay = meta_display_get_xdisplay (display); if (priv->size_changed) { detach_pixmap (self); priv->size_changed = FALSE; } if (priv->pixmap == None) { Pixmap new_pixmap; Window xwindow = meta_window_x11_get_toplevel_xwindow (priv->window); meta_error_trap_push (display); new_pixmap = XCompositeNameWindowPixmap (xdisplay, xwindow); if (meta_error_trap_pop_with_return (display) != Success) { /* Probably a BadMatch if the window isn't viewable; we could * GrabServer/GetWindowAttributes/NameWindowPixmap/UngrabServer/Sync * to avoid this, but there's no reason to take two round trips * when one will do. (We need that Sync if we want to handle failures * for any reason other than !viewable. That's unlikely, but maybe * we'll BadAlloc or something.) */ new_pixmap = None; } if (new_pixmap == None) { meta_verbose ("Unable to get named pixmap for %s\n", meta_window_get_description (priv->window)); return; } set_pixmap (self, new_pixmap); } }
static void redirect_windows (MetaScreen *screen) { MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); Window xroot = meta_screen_get_xroot (screen); int screen_number = meta_screen_get_screen_number (screen); guint n_retries; guint max_retries; if (meta_get_replace_current_wm ()) max_retries = 5; else max_retries = 1; n_retries = 0; /* Some compositors (like old versions of Mutter) might not properly unredirect * subwindows before destroying the WM selection window; so we wait a while * for such a compositor to exit before giving up. */ while (TRUE) { meta_error_trap_push (display); XCompositeRedirectSubwindows (xdisplay, xroot, CompositeRedirectManual); XSync (xdisplay, FALSE); if (!meta_error_trap_pop_with_return (display)) break; if (n_retries == max_retries) { /* This probably means that a non-WM compositor like xcompmgr is running; * we have no way to get it to exit */ meta_fatal (_("Another compositing manager is already running on screen %i on display \"%s\"."), screen_number, display->name); } n_retries++; g_usleep (G_USEC_PER_SEC); } }
/** * This function is used to avoid raising a window above popup * menus and other such things. * * FIXME This is sort of an expensive function, should probably * do something to avoid it. One approach would be to reverse * the stacking algorithm to work by placing each window above * the others, and start by lowering a window to the bottom * (instead of the current way, which works by placing each * window below another and starting with a raise) */ static void raise_window_relative_to_managed_windows (MetaScreen *screen, Window xwindow) { Window ignored1, ignored2; Window *children; unsigned int n_children; int i; /* Normally XQueryTree() means "must grab server" but here * we don't, since we know we won't manage any new windows * or restack any windows before using the XQueryTree results. */ meta_error_trap_push_with_return (screen->display); XQueryTree (screen->display->xdisplay, screen->xroot, &ignored1, &ignored2, &children, &n_children); if (meta_error_trap_pop_with_return (screen->display, TRUE) != Success) { meta_topic (META_DEBUG_STACK, "Error querying root children to raise window 0x%lx\n", xwindow); return; } /* Children are in order from bottom to top. We want to * find the topmost managed child, then configure * our window to be above it. */ i = n_children - 1; while (i >= 0) { if (children[i] == xwindow) { /* Do nothing. This means we're already the topmost managed * window, but it DOES NOT mean we are already just above * the topmost managed window. This is important because if * an override redirect window is up, and we map a new * managed window, the new window is probably above the old * popup by default, and we want to push it below that * popup. So keep looking for a sibling managed window * to be moved below. */ } else if (meta_display_lookup_x_window (screen->display, children[i]) != NULL) { XWindowChanges changes; /* children[i] is the topmost managed child */ meta_topic (META_DEBUG_STACK, "Moving 0x%lx above topmost managed child window 0x%lx\n", xwindow, children[i]); changes.sibling = children[i]; changes.stack_mode = Above; meta_error_trap_push (screen->display); XConfigureWindow (screen->display->xdisplay, xwindow, CWSibling | CWStackMode, &changes); meta_error_trap_pop (screen->display, FALSE); break; } --i; } if (i < 0) { /* No sibling to use, just lower ourselves to the bottom * to be sure we're below any override redirect windows. */ meta_error_trap_push (screen->display); XLowerWindow (screen->display->xdisplay, xwindow); meta_error_trap_pop (screen->display, FALSE); } if (children) XFree (children); }
void meta_compositor_manage_screen (MetaCompositor *compositor, MetaScreen *screen) { MetaCompScreen *info; MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); int screen_number = meta_screen_get_screen_number (screen); Window xroot = meta_screen_get_xroot (screen); Window xwin; gint width, height; XWindowAttributes attr; long event_mask; guint n_retries; guint max_retries; /* Check if the screen is already managed */ if (meta_screen_get_compositor_data (screen)) return; if (meta_get_replace_current_wm ()) max_retries = 5; else max_retries = 1; n_retries = 0; /* Some compositors (like old versions of Muffin) might not properly unredirect * subwindows before destroying the WM selection window; so we wait a while * for such a compositor to exit before giving up. */ while (TRUE) { meta_error_trap_push_with_return (display); XCompositeRedirectSubwindows (xdisplay, xroot, CompositeRedirectManual); XSync (xdisplay, FALSE); if (!meta_error_trap_pop_with_return (display)) break; if (n_retries == max_retries) { /* This probably means that a non-WM compositor like xcompmgr is running; * we have no way to get it to exit */ meta_fatal (_("Another compositing manager is already running on screen %i on display \"%s\"."), screen_number, display->name); } n_retries++; g_usleep (G_USEC_PER_SEC); } info = g_new0 (MetaCompScreen, 1); /* * We use an empty input region for Clutter as a default because that allows * the user to interact with all the windows displayed on the screen. * We have to initialize info->pending_input_region to an empty region explicitly, * because None value is used to mean that the whole screen is an input region. */ info->pending_input_region = XFixesCreateRegion (xdisplay, NULL, 0); info->screen = screen; meta_screen_set_compositor_data (screen, info); info->output = None; info->windows = NULL; meta_screen_set_cm_selection (screen); info->stage = clutter_stage_new (); meta_screen_get_size (screen, &width, &height); clutter_actor_realize (info->stage); xwin = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage)); XResizeWindow (xdisplay, xwin, width, height); event_mask = FocusChangeMask | ExposureMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask | PropertyChangeMask | ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask | StructureNotifyMask; if (XGetWindowAttributes (xdisplay, xwin, &attr)) { event_mask |= attr.your_event_mask; } XSelectInput (xdisplay, xwin, event_mask); info->window_group = meta_window_group_new (screen); info->background_actor = meta_background_actor_new_for_screen (screen); info->bottom_window_group = clutter_group_new(); info->overlay_group = clutter_group_new (); info->top_window_group = meta_window_group_new (screen); info->hidden_group = clutter_group_new (); clutter_container_add (CLUTTER_CONTAINER (info->window_group), info->background_actor, NULL); clutter_container_add (CLUTTER_CONTAINER (info->stage), info->window_group, info->overlay_group, info->hidden_group, NULL); clutter_actor_hide (info->hidden_group); info->plugin_mgr = meta_plugin_manager_get (screen); meta_plugin_manager_initialize (info->plugin_mgr); /* * Delay the creation of the overlay window as long as we can, to avoid * blanking out the screen. This means that during the plugin loading, the * overlay window is not accessible; if the plugin needs to access it * directly, it should hook into the "show" signal on stage, and do * its stuff there. */ info->output = get_output_window (screen); XReparentWindow (xdisplay, xwin, info->output, 0, 0); /* Make sure there isn't any left-over output shape on the * overlay window by setting the whole screen to be an * output region. * * Note: there doesn't seem to be any real chance of that * because the X server will destroy the overlay window * when the last client using it exits. */ XFixesSetWindowShapeRegion (xdisplay, info->output, ShapeBounding, 0, 0, None); do_set_stage_input_region (screen, info->pending_input_region); if (info->pending_input_region != None) { XFixesDestroyRegion (xdisplay, info->pending_input_region); info->pending_input_region = None; } clutter_actor_show (info->overlay_group); clutter_actor_show (info->stage); }