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Patch from Keith Packard to handle root window resizes.
2002-09-28 Havoc Pennington <hp@pobox.com>
Patch from Keith Packard to handle root window resizes.
* src/screen.c (reload_xinerama_infos): factor out Xinerama code
(meta_screen_resize): implement this, to be called from display.c
on screen resize
* src/display.c (event_callback): handle ConfigureNotify on root
windows
This commit is contained in:
Havoc Pennington
Havoc Pennington
parent
f37245ace2
commit
43a726efe7
11
ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2002-09-28 Havoc Pennington <hp@pobox.com>
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Patch from Keith Packard to handle root window resizes.
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* src/screen.c (reload_xinerama_infos): factor out Xinerama code
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(meta_screen_resize): implement this, to be called from display.c
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on screen resize
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* src/display.c (event_callback): handle ConfigureNotify on root
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windows
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2002-09-28 Havoc Pennington <hp@pobox.com>
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* src/stack.c (get_standalone_layer): re-enable the FOCUSED_WINDOW
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@ -1388,6 +1388,17 @@ event_callback (XEvent *event,
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case ReparentNotify:
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break;
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case ConfigureNotify:
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/* Handle screen resize */
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{
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MetaScreen *screen;
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screen = meta_display_screen_for_root (display,
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event->xconfigure.window);
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if (screen != NULL)
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meta_screen_resize (screen,
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event->xconfigure.width,
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event->xconfigure.height);
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}
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break;
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case ConfigureRequest:
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/* This comment and code is found in both twm and fvwm */
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393
src/screen.c
393
src/screen.c
@ -171,190 +171,22 @@ set_wm_icon_size_hint (MetaScreen *screen)
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#undef N_VALS
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}
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MetaScreen*
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meta_screen_new (MetaDisplay *display,
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int number)
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static void
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reload_xinerama_infos (MetaScreen *screen)
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{
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MetaScreen *screen;
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Window xroot;
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Display *xdisplay;
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XWindowAttributes attr;
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Window new_wm_sn_owner;
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Window current_wm_sn_owner;
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gboolean replace_current_wm;
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Atom wm_sn_atom;
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char buf[128];
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Time manager_timestamp;
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MetaDisplay *display;
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replace_current_wm = meta_get_replace_current_wm ();
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display = screen->display;
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/* Only display->name, display->xdisplay, and display->error_traps
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* can really be used in this function, since normally screens are
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* created from the MetaDisplay constructor
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*/
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xdisplay = display->xdisplay;
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meta_verbose ("Trying screen %d on display '%s'\n",
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number, display->name);
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xroot = RootWindow (xdisplay, number);
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/* FVWM checks for None here, I don't know if this
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* ever actually happens
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*/
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if (xroot == None)
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{
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meta_warning (_("Screen %d on display '%s' is invalid\n"),
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number, display->name);
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return NULL;
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}
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sprintf (buf, "WM_S%d", number);
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wm_sn_atom = XInternAtom (xdisplay, buf, False);
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current_wm_sn_owner = XGetSelectionOwner (xdisplay, wm_sn_atom);
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if (current_wm_sn_owner != None)
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{
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XSetWindowAttributes attrs;
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if (!replace_current_wm)
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{
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meta_warning (_("Screen %d on display \"%s\" already has a window manager; try using the --replace option to replace the current window manager.\n"),
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number, display->name);
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return NULL;
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}
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/* We want to find out when the current selection owner dies */
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meta_error_trap_push (display);
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attrs.event_mask = StructureNotifyMask;
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XChangeWindowAttributes (xdisplay,
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current_wm_sn_owner, CWEventMask, &attrs);
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if (meta_error_trap_pop (display) != Success)
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current_wm_sn_owner = None; /* don't wait for it to die later on */
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}
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new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
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{
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/* Generate a timestamp */
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XSetWindowAttributes attrs;
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XEvent event;
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attrs.event_mask = PropertyChangeMask;
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XChangeWindowAttributes (xdisplay, new_wm_sn_owner, CWEventMask, &attrs);
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XChangeProperty (xdisplay,
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new_wm_sn_owner, XA_WM_CLASS, XA_STRING, 8,
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PropModeAppend, NULL, 0);
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XWindowEvent (xdisplay, new_wm_sn_owner, PropertyChangeMask, &event);
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attrs.event_mask = NoEventMask;
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XChangeWindowAttributes (display->xdisplay,
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new_wm_sn_owner, CWEventMask, &attrs);
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manager_timestamp = event.xproperty.time;
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}
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XSetSelectionOwner (xdisplay, wm_sn_atom, new_wm_sn_owner,
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manager_timestamp);
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if (XGetSelectionOwner (xdisplay, wm_sn_atom) != new_wm_sn_owner)
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{
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meta_warning (_("Could not acquire window manager selection on screen %d display \"%s\"\n"),
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number, display->name);
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XDestroyWindow (xdisplay, new_wm_sn_owner);
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return NULL;
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}
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{
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/* Send client message indicating that we are now the WM */
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XClientMessageEvent ev;
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ev.type = ClientMessage;
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ev.window = xroot;
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ev.message_type = display->atom_manager;
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ev.format = 32;
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ev.data.l[0] = manager_timestamp;
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ev.data.l[1] = wm_sn_atom;
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XSendEvent (xdisplay, xroot, False, StructureNotifyMask, (XEvent*)&ev);
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}
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/* Wait for old window manager to go away */
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if (current_wm_sn_owner != None)
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{
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XEvent event;
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/* We sort of block infinitely here which is probably lame. */
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meta_verbose ("Waiting for old window manager to exit\n");
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do
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{
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XWindowEvent (xdisplay, current_wm_sn_owner,
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StructureNotifyMask, &event);
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}
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while (event.type != DestroyNotify);
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}
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/* select our root window events */
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meta_error_trap_push (display);
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/* We need to or with the existing event mask since
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* gtk+ may be interested in other events.
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*/
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XGetWindowAttributes (xdisplay, xroot, &attr);
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XSelectInput (xdisplay,
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xroot,
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SubstructureRedirectMask | SubstructureNotifyMask |
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ColormapChangeMask | PropertyChangeMask |
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LeaveWindowMask | EnterWindowMask |
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ButtonPressMask | ButtonReleaseMask |
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KeyPressMask | KeyReleaseMask |
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FocusChangeMask | attr.your_event_mask);
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if (meta_error_trap_pop (display) != Success)
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{
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meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"),
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number, display->name);
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XDestroyWindow (xdisplay, new_wm_sn_owner);
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return NULL;
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}
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screen = g_new (MetaScreen, 1);
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screen->closing = 0;
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screen->display = display;
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screen->number = number;
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screen->screen_name = get_screen_name (display, number);
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screen->xscreen = ScreenOfDisplay (xdisplay, number);
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screen->xroot = xroot;
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screen->width = WidthOfScreen (screen->xscreen);
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screen->height = HeightOfScreen (screen->xscreen);
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screen->current_cursor = -1; /* invalid/unset */
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screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
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screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
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screen->wm_sn_selection_window = new_wm_sn_owner;
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screen->wm_sn_atom = wm_sn_atom;
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screen->wm_sn_timestamp = manager_timestamp;
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screen->work_area_idle = 0;
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screen->active_workspace = NULL;
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screen->rows_of_workspaces = 1;
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screen->columns_of_workspaces = -1;
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screen->vertical_workspaces = FALSE;
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if (screen->xinerama_infos)
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g_free (screen->xinerama_infos);
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screen->xinerama_infos = NULL;
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screen->n_xinerama_infos = 0;
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screen->last_xinerama_index = 0;
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screen->display->xinerama_cache_invalidated = TRUE;
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#ifdef HAVE_XFREE_XINERAMA
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if (XineramaIsActive (display->xdisplay))
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{
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@ -511,6 +343,193 @@ meta_screen_new (MetaDisplay *display,
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g_assert (screen->n_xinerama_infos > 0);
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g_assert (screen->xinerama_infos != NULL);
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}
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MetaScreen*
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meta_screen_new (MetaDisplay *display,
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int number)
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{
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MetaScreen *screen;
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Window xroot;
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Display *xdisplay;
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XWindowAttributes attr;
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Window new_wm_sn_owner;
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Window current_wm_sn_owner;
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gboolean replace_current_wm;
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Atom wm_sn_atom;
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char buf[128];
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Time manager_timestamp;
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replace_current_wm = meta_get_replace_current_wm ();
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/* Only display->name, display->xdisplay, and display->error_traps
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* can really be used in this function, since normally screens are
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* created from the MetaDisplay constructor
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*/
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xdisplay = display->xdisplay;
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meta_verbose ("Trying screen %d on display '%s'\n",
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number, display->name);
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xroot = RootWindow (xdisplay, number);
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/* FVWM checks for None here, I don't know if this
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* ever actually happens
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*/
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if (xroot == None)
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{
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meta_warning (_("Screen %d on display '%s' is invalid\n"),
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number, display->name);
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return NULL;
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}
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sprintf (buf, "WM_S%d", number);
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wm_sn_atom = XInternAtom (xdisplay, buf, False);
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current_wm_sn_owner = XGetSelectionOwner (xdisplay, wm_sn_atom);
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if (current_wm_sn_owner != None)
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{
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XSetWindowAttributes attrs;
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if (!replace_current_wm)
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{
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meta_warning (_("Screen %d on display \"%s\" already has a window manager; try using the --replace option to replace the current window manager.\n"),
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number, display->name);
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return NULL;
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}
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/* We want to find out when the current selection owner dies */
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meta_error_trap_push (display);
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attrs.event_mask = StructureNotifyMask;
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XChangeWindowAttributes (xdisplay,
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current_wm_sn_owner, CWEventMask, &attrs);
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if (meta_error_trap_pop (display) != Success)
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current_wm_sn_owner = None; /* don't wait for it to die later on */
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}
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new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
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{
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/* Generate a timestamp */
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XSetWindowAttributes attrs;
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XEvent event;
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attrs.event_mask = PropertyChangeMask;
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XChangeWindowAttributes (xdisplay, new_wm_sn_owner, CWEventMask, &attrs);
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XChangeProperty (xdisplay,
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new_wm_sn_owner, XA_WM_CLASS, XA_STRING, 8,
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PropModeAppend, NULL, 0);
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XWindowEvent (xdisplay, new_wm_sn_owner, PropertyChangeMask, &event);
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attrs.event_mask = NoEventMask;
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XChangeWindowAttributes (display->xdisplay,
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new_wm_sn_owner, CWEventMask, &attrs);
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manager_timestamp = event.xproperty.time;
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}
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XSetSelectionOwner (xdisplay, wm_sn_atom, new_wm_sn_owner,
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manager_timestamp);
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if (XGetSelectionOwner (xdisplay, wm_sn_atom) != new_wm_sn_owner)
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{
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meta_warning (_("Could not acquire window manager selection on screen %d display \"%s\"\n"),
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number, display->name);
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XDestroyWindow (xdisplay, new_wm_sn_owner);
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return NULL;
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}
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{
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/* Send client message indicating that we are now the WM */
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XClientMessageEvent ev;
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ev.type = ClientMessage;
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ev.window = xroot;
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ev.message_type = display->atom_manager;
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ev.format = 32;
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ev.data.l[0] = manager_timestamp;
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ev.data.l[1] = wm_sn_atom;
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XSendEvent (xdisplay, xroot, False, StructureNotifyMask, (XEvent*)&ev);
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}
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/* Wait for old window manager to go away */
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if (current_wm_sn_owner != None)
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{
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XEvent event;
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/* We sort of block infinitely here which is probably lame. */
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meta_verbose ("Waiting for old window manager to exit\n");
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do
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{
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XWindowEvent (xdisplay, current_wm_sn_owner,
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StructureNotifyMask, &event);
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}
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while (event.type != DestroyNotify);
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}
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/* select our root window events */
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meta_error_trap_push (display);
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/* We need to or with the existing event mask since
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* gtk+ may be interested in other events.
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*/
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XGetWindowAttributes (xdisplay, xroot, &attr);
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XSelectInput (xdisplay,
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xroot,
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SubstructureRedirectMask | SubstructureNotifyMask |
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ColormapChangeMask | PropertyChangeMask |
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LeaveWindowMask | EnterWindowMask |
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ButtonPressMask | ButtonReleaseMask |
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KeyPressMask | KeyReleaseMask |
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FocusChangeMask | StructureNotifyMask |
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attr.your_event_mask);
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if (meta_error_trap_pop (display) != Success)
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{
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meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"),
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number, display->name);
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XDestroyWindow (xdisplay, new_wm_sn_owner);
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return NULL;
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}
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screen = g_new (MetaScreen, 1);
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screen->closing = 0;
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screen->display = display;
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screen->number = number;
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screen->screen_name = get_screen_name (display, number);
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screen->xscreen = ScreenOfDisplay (xdisplay, number);
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screen->xroot = xroot;
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screen->width = WidthOfScreen (screen->xscreen);
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screen->height = HeightOfScreen (screen->xscreen);
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screen->current_cursor = -1; /* invalid/unset */
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screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
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screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
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screen->wm_sn_selection_window = new_wm_sn_owner;
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screen->wm_sn_atom = wm_sn_atom;
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screen->wm_sn_timestamp = manager_timestamp;
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screen->work_area_idle = 0;
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screen->active_workspace = NULL;
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screen->rows_of_workspaces = 1;
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screen->columns_of_workspaces = -1;
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screen->vertical_workspaces = FALSE;
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screen->xinerama_infos = NULL;
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screen->n_xinerama_infos = 0;
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screen->last_xinerama_index = 0;
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reload_xinerama_infos (screen);
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meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
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@ -1468,3 +1487,25 @@ meta_screen_calc_workspace_layout (MetaScreen *screen,
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*r = rows;
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*c = cols;
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}
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void
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meta_screen_resize_func (MetaScreen *screen,
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MetaWindow *window,
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void *user_data)
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{
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meta_window_queue_move_resize (window);
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}
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void
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meta_screen_resize (MetaScreen *screen,
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int width,
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int height)
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{
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screen->width = width;
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screen->height = height;
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reload_xinerama_infos (screen);
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/* Queue a resize on all the windows */
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meta_screen_foreach_window (screen, meta_screen_resize_func, 0);
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}
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@ -122,4 +122,9 @@ void meta_screen_calc_workspace_layout (MetaScreen *screen,
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int *r,
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int *c);
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void meta_screen_resize (MetaScreen *screen,
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int width,
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int height);
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#endif
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