/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /** * \file window-props.c MetaWindow property handling * * A system which can inspect sets of properties of given windows * and take appropriate action given their values. * * Note that all the meta_window_reload_propert* functions require a * round trip to the server. * * The guts of this system are in meta_display_init_window_prop_hooks(). * Reading this function will give you insight into how this all fits * together. */ /* * Copyright (C) 2001, 2002, 2003 Red Hat, Inc. * Copyright (C) 2004, 2005 Elijah Newren * Copyright (C) 2009 Thomas Thurman * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301, USA. */ #define _GNU_SOURCE #define _XOPEN_SOURCE /* for gethostname() */ #include #include "window-props.h" #include "errors.h" #include "xprops.h" #include "frame-private.h" #include "group.h" #include #include #include #include #include #include #ifdef HAVE_GTOP #include #include #include #endif /* HAVE_GTOP */ #ifndef HOST_NAME_MAX /* Solaris headers apparently don't define this so do so manually; #326745 */ #define HOST_NAME_MAX 255 #endif typedef void (* ReloadValueFunc) (MetaWindow *window, MetaPropValue *value, gboolean initial); typedef struct MetaWindowPropHooks { Atom property; MetaPropValueType type; ReloadValueFunc reload_func; } MetaWindowPropHooks; static MetaWindowPropHooks* find_hooks (MetaDisplay *display, Atom property); void meta_window_reload_property (MetaWindow *window, Atom property, gboolean initial) { meta_window_reload_properties (window, &property, 1, initial); } void meta_window_reload_properties (MetaWindow *window, const Atom *properties, int n_properties, gboolean initial) { meta_window_reload_properties_from_xwindow (window, window->xwindow, properties, n_properties, initial); } void meta_window_reload_property_from_xwindow (MetaWindow *window, Window xwindow, Atom property, gboolean initial) { meta_window_reload_properties_from_xwindow (window, xwindow, &property, 1, initial); } void meta_window_reload_properties_from_xwindow (MetaWindow *window, Window xwindow, const Atom *properties, int n_properties, gboolean initial) { int i; MetaPropValue *values; g_return_if_fail (properties != NULL); g_return_if_fail (n_properties > 0); values = g_new0 (MetaPropValue, n_properties); for (i=0; idisplay, properties[i]); if (!hooks || hooks->type == META_PROP_VALUE_INVALID) { values[i].type = META_PROP_VALUE_INVALID; values[i].atom = None; } else { values[i].type = hooks->type; values[i].atom = properties[i]; } } meta_prop_get_values (window->display, xwindow, values, n_properties); for (i=0; idisplay, properties[i]); if (hooks && hooks->reload_func != NULL) (* hooks->reload_func) (window, &values[i], initial); } meta_prop_free_values (values, n_properties); g_free (values); } static void reload_wm_client_machine (MetaWindow *window, MetaPropValue *value, gboolean initial) { g_free (window->wm_client_machine); window->wm_client_machine = NULL; if (value->type != META_PROP_VALUE_INVALID) window->wm_client_machine = g_strdup (value->v.str); meta_verbose ("Window has client machine \"%s\"\n", window->wm_client_machine ? window->wm_client_machine : "unset"); } static void complain_about_broken_client (MetaWindow *window, MetaPropValue *value, gboolean initial) { meta_warning ("Broken client! Window %s changed client leader window or SM client ID\n", window->desc); } static void reload_net_wm_window_type (MetaWindow *window, MetaPropValue *value, gboolean initial) { meta_window_update_net_wm_type (window); } static void reload_icon (MetaWindow *window, Atom atom) { meta_icon_cache_property_changed (&window->icon_cache, window->display, atom); meta_window_queue(window, META_QUEUE_UPDATE_ICON); } static void reload_net_wm_icon (MetaWindow *window, MetaPropValue *value, gboolean initial) { reload_icon (window, window->display->atom__NET_WM_ICON); } static void reload_kwm_win_icon (MetaWindow *window, MetaPropValue *value, gboolean initial) { reload_icon (window, window->display->atom__KWM_WIN_ICON); } static gboolean gtk_border_equal (GtkBorder *a, GtkBorder *b) { return (a->left == b->left && a->right == b->right && a->top == b->top && a->bottom == b->bottom); } static void meta_window_set_custom_frame_extents (MetaWindow *window, GtkBorder *extents) { if (extents) { if (window->has_custom_frame_extents && gtk_border_equal (&window->custom_frame_extents, extents)) return; window->has_custom_frame_extents = TRUE; window->custom_frame_extents = *extents; } else { if (!window->has_custom_frame_extents) return; window->has_custom_frame_extents = FALSE; memset (&window->custom_frame_extents, 0, sizeof (window->custom_frame_extents)); } meta_window_queue (window, META_QUEUE_MOVE_RESIZE); } static void reload_gtk_frame_extents (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { if (value->v.cardinal_list.n_cardinals != 4) { meta_verbose ("_GTK_FRAME_EXTENTS on %s has %d values instead of 4\n", window->desc, value->v.cardinal_list.n_cardinals); } else { GtkBorder extents; extents.left = (int)value->v.cardinal_list.cardinals[0]; extents.right = (int)value->v.cardinal_list.cardinals[1]; extents.top = (int)value->v.cardinal_list.cardinals[2]; extents.bottom = (int)value->v.cardinal_list.cardinals[3]; meta_window_set_custom_frame_extents (window, &extents); } } else { meta_window_set_custom_frame_extents (window, NULL); } } static void reload_struts (MetaWindow *window, MetaPropValue *value, gboolean initial) { meta_window_update_struts (window); } static void reload_wm_window_role (MetaWindow *window, MetaPropValue *value, gboolean initial) { meta_window_update_role (window); } static void reload_net_wm_pid (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { gulong cardinal = (int) value->v.cardinal; if (cardinal <= 0) meta_warning (_("Application set a bogus _NET_WM_PID %lu\n"), cardinal); else { window->net_wm_pid = cardinal; meta_verbose ("Window has _NET_WM_PID %d\n", window->net_wm_pid); } } } static void reload_net_wm_user_time (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { gulong cardinal = value->v.cardinal; meta_window_set_user_time (window, cardinal); } } static void reload_net_wm_user_time_window (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { /* Unregister old NET_WM_USER_TIME_WINDOW */ if (window->user_time_window != None) { /* See the comment to the meta_display_register_x_window call below. */ meta_display_unregister_x_window (window->display, window->user_time_window); /* Don't get events on not-managed windows */ XSelectInput (window->display->xdisplay, window->user_time_window, NoEventMask); } /* Obtain the new NET_WM_USER_TIME_WINDOW and register it */ window->user_time_window = value->v.xwindow; if (window->user_time_window != None) { /* Kind of a hack; display.c:event_callback() ignores events * for unknown windows. We make window->user_time_window * known by registering it with window (despite the fact * that window->xwindow is already registered with window). * This basically means that property notifies to either the * window->user_time_window or window->xwindow will be * treated identically and will result in functions for * window being called to update it. Maybe we should ignore * any property notifies to window->user_time_window other * than atom__NET_WM_USER_TIME ones, but I just don't care * and it's not specified in the spec anyway. */ meta_display_register_x_window (window->display, &window->user_time_window, window); /* Just listen for property notify events */ XSelectInput (window->display->xdisplay, window->user_time_window, PropertyChangeMask); /* Manually load the _NET_WM_USER_TIME field from the given window * at this time as well. If the user_time_window ever broadens in * scope, we'll probably want to load all relevant properties here. */ meta_window_reload_property_from_xwindow ( window, window->user_time_window, window->display->atom__NET_WM_USER_TIME, initial); } } } /** * Finds who owns a particular process, if we can. * * \param process The process's ID. * \result Set to the ID of the user, if we returned true. * * \result True if we could tell. */ static gboolean owner_of_process (pid_t process, uid_t *result) { #ifdef HAVE_GTOP glibtop_proc_uid process_details; glibtop_get_proc_uid (&process_details, process); if (process_details.flags & (1L << GLIBTOP_PROC_UID_UID)) { *result = process_details.uid; return TRUE; } else { return FALSE; } #else /* I don't know, maybe we could do something hairy like see whether * /proc/$PID exists and who owns it, in case they have procfs. */ return FALSE; #endif /* HAVE_GTOP */ } #define MAX_TITLE_LENGTH 512 /** * Called by set_window_title and set_icon_title to set the value of * *target to title. It required and atom is set, it will update the * appropriate property. * * Returns TRUE if a new title was set. */ static gboolean set_title_text (MetaWindow *window, gboolean previous_was_modified, const char *title, Atom atom, char **target) { char hostname[HOST_NAME_MAX + 1]; gboolean modified = FALSE; if (!target) return FALSE; g_free (*target); if (!title) *target = g_strdup (""); else if (g_utf8_strlen (title, MAX_TITLE_LENGTH + 1) > MAX_TITLE_LENGTH) { *target = meta_g_utf8_strndup (title, MAX_TITLE_LENGTH); modified = TRUE; } /* if WM_CLIENT_MACHINE indicates this machine is on a remote host * let's place that hostname in the title */ else if (window->wm_client_machine && !gethostname (hostname, HOST_NAME_MAX + 1) && strcmp (hostname, window->wm_client_machine)) { /* Translators: the title of a window from another machine */ *target = g_strdup_printf (_("%s (on %s)"), title, window->wm_client_machine); modified = TRUE; } else if (window->net_wm_pid != -1) { /* We know the process which owns this window; perhaps we can * find out the name of its owner (if it's not us). */ char *found_name = NULL; uid_t window_owner = 0; gboolean window_owner_known = owner_of_process (window->net_wm_pid, &window_owner); /* Assume a window with unknown ownership is ours (call it usufruct!) */ gboolean window_owner_is_us = !window_owner_known || window_owner==getuid (); if (window_owner_is_us) { /* we own it, so fall back to the simple case */ *target = g_strdup (title); } else { /* it belongs to window_owner. So what's their name? */ if (window_owner==0) { /* Simple case-- don't bother to look it up. It's root. */ *target = g_strdup_printf (_("%s (as superuser)"), title); } else { /* Okay, let's look up the name. */ struct passwd *pwd; errno = 0; pwd = getpwuid (window_owner); if (errno==0 && pwd!=NULL) { found_name = pwd->pw_name; } if (found_name) /* Translators: the title of a window owned by another user * on this machine */ *target = g_strdup_printf (_("%s (as %s)"), title, found_name); else /* Translators: the title of a window owned by another user * on this machine, whose name we don't know */ *target = g_strdup_printf (_("%s (as another user)"), title); } /* either way we changed it */ modified = TRUE; } } else *target = g_strdup (title); if (modified && atom != None) meta_prop_set_utf8_string_hint (window->display, window->xwindow, atom, *target); /* Bug 330671 -- Don't forget to clear _NET_WM_VISIBLE_(ICON_)NAME */ if (!modified && previous_was_modified) { meta_error_trap_push (window->display); XDeleteProperty (window->display->xdisplay, window->xwindow, atom); meta_error_trap_pop (window->display, FALSE); } return modified; } static void set_window_title (MetaWindow *window, const char *title) { char *str; gboolean modified = set_title_text (window, window->using_net_wm_visible_name, title, window->display->atom__NET_WM_VISIBLE_NAME, &window->title); window->using_net_wm_visible_name = modified; /* strndup is a hack since GNU libc has broken %.10s */ str = g_strndup (window->title, 10); g_free (window->desc); window->desc = g_strdup_printf ("0x%lx (%s)", window->xwindow, str); g_free (str); if (window->frame) meta_ui_set_frame_title (window->screen->ui, window->frame->xwindow, window->title); } static void reload_net_wm_name (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { set_window_title (window, value->v.str); window->using_net_wm_name = TRUE; meta_verbose ("Using _NET_WM_NAME for new title of %s: \"%s\"\n", window->desc, window->title); } else { set_window_title (window, NULL); window->using_net_wm_name = FALSE; if (!initial) meta_window_reload_property (window, XA_WM_NAME, FALSE); } } static void reload_wm_name (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (window->using_net_wm_name) { meta_verbose ("Ignoring WM_NAME \"%s\" as _NET_WM_NAME is set\n", value->v.str); return; } if (value->type != META_PROP_VALUE_INVALID) { set_window_title (window, value->v.str); meta_verbose ("Using WM_NAME for new title of %s: \"%s\"\n", window->desc, window->title); } else { set_window_title (window, NULL); } } static void set_icon_title (MetaWindow *window, const char *title) { gboolean modified = set_title_text (window, window->using_net_wm_visible_icon_name, title, window->display->atom__NET_WM_VISIBLE_ICON_NAME, &window->icon_name); window->using_net_wm_visible_icon_name = modified; } static void reload_net_wm_icon_name (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { set_icon_title (window, value->v.str); window->using_net_wm_icon_name = TRUE; meta_verbose ("Using _NET_WM_ICON_NAME for new title of %s: \"%s\"\n", window->desc, window->title); } else { set_icon_title (window, NULL); window->using_net_wm_icon_name = FALSE; if (!initial) meta_window_reload_property (window, XA_WM_ICON_NAME, FALSE); } } static void reload_wm_icon_name (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (window->using_net_wm_icon_name) { meta_verbose ("Ignoring WM_ICON_NAME \"%s\" as _NET_WM_ICON_NAME is set\n", value->v.str); return; } if (value->type != META_PROP_VALUE_INVALID) { set_icon_title (window, value->v.str); meta_verbose ("Using WM_ICON_NAME for new title of %s: \"%s\"\n", window->desc, window->title); } else { set_icon_title (window, NULL); } } static void reload_net_wm_state (MetaWindow *window, MetaPropValue *value, gboolean initial) { int i; /* We know this is only an initial window creation, * clients don't change the property. */ if (!initial) { /* no, they DON'T change the property */ meta_verbose ("Ignoring _NET_WM_STATE: we should be the one who set " "the property in the first place\n"); return; } window->shaded = FALSE; window->maximized_horizontally = FALSE; window->maximized_vertically = FALSE; window->fullscreen = FALSE; window->wm_state_modal = FALSE; window->wm_state_skip_taskbar = FALSE; window->wm_state_skip_pager = FALSE; window->wm_state_above = FALSE; window->wm_state_below = FALSE; window->wm_state_demands_attention = FALSE; if (value->type == META_PROP_VALUE_INVALID) return; i = 0; while (i < value->v.atom_list.n_atoms) { if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_SHADED) window->shaded = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_MAXIMIZED_HORZ) window->maximize_horizontally_after_placement = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_MAXIMIZED_VERT) window->maximize_vertically_after_placement = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_HIDDEN) window->minimize_after_placement = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_MODAL) window->wm_state_modal = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_SKIP_TASKBAR) window->wm_state_skip_taskbar = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_SKIP_PAGER) window->wm_state_skip_pager = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_FULLSCREEN) window->fullscreen_after_placement = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_ABOVE) window->wm_state_above = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_BELOW) window->wm_state_below = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_DEMANDS_ATTENTION) window->wm_state_demands_attention = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_STICKY) window->on_all_workspaces = TRUE; ++i; } meta_verbose ("Reloaded _NET_WM_STATE for %s\n", window->desc); meta_window_recalc_window_type (window); } static void reload_mwm_hints (MetaWindow *window, MetaPropValue *value, gboolean initial) { MotifWmHints *hints; window->mwm_decorated = TRUE; window->mwm_border_only = FALSE; window->mwm_has_close_func = TRUE; window->mwm_has_minimize_func = TRUE; window->mwm_has_maximize_func = TRUE; window->mwm_has_move_func = TRUE; window->mwm_has_resize_func = TRUE; if (value->type == META_PROP_VALUE_INVALID) { meta_verbose ("Window %s has no MWM hints\n", window->desc); meta_window_recalc_features (window); return; } hints = value->v.motif_hints; /* We support those MWM hints deemed non-stupid */ meta_verbose ("Window %s has MWM hints\n", window->desc); if (hints->flags & MWM_HINTS_DECORATIONS) { meta_verbose ("Window %s sets MWM_HINTS_DECORATIONS 0x%lx\n", window->desc, hints->decorations); if (hints->decorations == 0) window->mwm_decorated = FALSE; /* some input methods use this */ else if (hints->decorations == MWM_DECOR_BORDER) window->mwm_border_only = TRUE; } else meta_verbose ("Decorations flag unset\n"); if (hints->flags & MWM_HINTS_FUNCTIONS) { gboolean toggle_value; meta_verbose ("Window %s sets MWM_HINTS_FUNCTIONS 0x%lx\n", window->desc, hints->functions); /* If _ALL is specified, then other flags indicate what to turn off; * if ALL is not specified, flags are what to turn on. * at least, I think so */ if ((hints->functions & MWM_FUNC_ALL) == 0) { toggle_value = TRUE; meta_verbose ("Window %s disables all funcs then reenables some\n", window->desc); window->mwm_has_close_func = FALSE; window->mwm_has_minimize_func = FALSE; window->mwm_has_maximize_func = FALSE; window->mwm_has_move_func = FALSE; window->mwm_has_resize_func = FALSE; } else { meta_verbose ("Window %s enables all funcs then disables some\n", window->desc); toggle_value = FALSE; } if ((hints->functions & MWM_FUNC_CLOSE) != 0) { meta_verbose ("Window %s toggles close via MWM hints\n", window->desc); window->mwm_has_close_func = toggle_value; } if ((hints->functions & MWM_FUNC_MINIMIZE) != 0) { meta_verbose ("Window %s toggles minimize via MWM hints\n", window->desc); window->mwm_has_minimize_func = toggle_value; } if ((hints->functions & MWM_FUNC_MAXIMIZE) != 0) { meta_verbose ("Window %s toggles maximize via MWM hints\n", window->desc); window->mwm_has_maximize_func = toggle_value; } if ((hints->functions & MWM_FUNC_MOVE) != 0) { meta_verbose ("Window %s toggles move via MWM hints\n", window->desc); window->mwm_has_move_func = toggle_value; } if ((hints->functions & MWM_FUNC_RESIZE) != 0) { meta_verbose ("Window %s toggles resize via MWM hints\n", window->desc); window->mwm_has_resize_func = toggle_value; } } else meta_verbose ("Functions flag unset\n"); meta_window_recalc_features (window); /* We do all this anyhow at the end of meta_window_new() */ if (!window->constructing) { if (window->decorated) meta_window_ensure_frame (window); else meta_window_destroy_frame (window); meta_window_queue (window, META_QUEUE_MOVE_RESIZE | /* because ensure/destroy frame may unmap: */ META_QUEUE_CALC_SHOWING); } } static void reload_wm_class (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (window->res_class) g_free (window->res_class); if (window->res_name) g_free (window->res_name); window->res_class = NULL; window->res_name = NULL; if (value->type != META_PROP_VALUE_INVALID) { if (value->v.class_hint.res_name) window->res_name = g_strdup (value->v.class_hint.res_name); if (value->v.class_hint.res_class) window->res_class = g_strdup (value->v.class_hint.res_class); } meta_verbose ("Window %s class: '%s' name: '%s'\n", window->desc, window->res_class ? window->res_class : "none", window->res_name ? window->res_name : "none"); } static void reload_net_wm_desktop (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { window->initial_workspace_set = TRUE; window->initial_workspace = value->v.cardinal; meta_topic (META_DEBUG_PLACEMENT, "Read initial workspace prop %d for %s\n", window->initial_workspace, window->desc); } } static void reload_net_startup_id (MetaWindow *window, MetaPropValue *value, gboolean initial) { guint32 timestamp = window->net_wm_user_time; MetaWorkspace *workspace = NULL; g_free (window->startup_id); if (value->type != META_PROP_VALUE_INVALID) window->startup_id = g_strdup (value->v.str); else window->startup_id = NULL; /* Update timestamp and workspace on a running window */ if (!window->constructing) { window->initial_timestamp_set = 0; window->initial_workspace_set = 0; if (meta_screen_apply_startup_properties (window->screen, window)) { if (window->initial_timestamp_set) timestamp = window->initial_timestamp; if (window->initial_workspace_set) workspace = meta_screen_get_workspace_by_index (window->screen, window->initial_workspace); meta_window_activate_with_workspace (window, timestamp, workspace); } } meta_verbose ("New _NET_STARTUP_ID \"%s\" for %s\n", window->startup_id ? window->startup_id : "unset", window->desc); } static void reload_update_counter (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { #ifdef HAVE_XSYNC XSyncCounter counter = value->v.xcounter; window->sync_request_counter = counter; meta_verbose ("Window has _NET_WM_SYNC_REQUEST_COUNTER 0x%lx\n", window->sync_request_counter); #endif } } #define FLAG_TOGGLED_ON(old,new,flag) \ (((old)->flags & (flag)) == 0 && \ ((new)->flags & (flag)) != 0) #define FLAG_TOGGLED_OFF(old,new,flag) \ (((old)->flags & (flag)) != 0 && \ ((new)->flags & (flag)) == 0) #define FLAG_CHANGED(old,new,flag) \ (FLAG_TOGGLED_ON(old,new,flag) || FLAG_TOGGLED_OFF(old,new,flag)) static void spew_size_hints_differences (const XSizeHints *old, const XSizeHints *new) { if (FLAG_CHANGED (old, new, USPosition)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: USPosition now %s\n", FLAG_TOGGLED_ON (old, new, USPosition) ? "set" : "unset"); if (FLAG_CHANGED (old, new, USSize)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: USSize now %s\n", FLAG_TOGGLED_ON (old, new, USSize) ? "set" : "unset"); if (FLAG_CHANGED (old, new, PPosition)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PPosition now %s\n", FLAG_TOGGLED_ON (old, new, PPosition) ? "set" : "unset"); if (FLAG_CHANGED (old, new, PSize)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PSize now %s\n", FLAG_TOGGLED_ON (old, new, PSize) ? "set" : "unset"); if (FLAG_CHANGED (old, new, PMinSize)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PMinSize now %s (%d x %d -> %d x %d)\n", FLAG_TOGGLED_ON (old, new, PMinSize) ? "set" : "unset", old->min_width, old->min_height, new->min_width, new->min_height); if (FLAG_CHANGED (old, new, PMaxSize)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PMaxSize now %s (%d x %d -> %d x %d)\n", FLAG_TOGGLED_ON (old, new, PMaxSize) ? "set" : "unset", old->max_width, old->max_height, new->max_width, new->max_height); if (FLAG_CHANGED (old, new, PResizeInc)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PResizeInc now %s (width_inc %d -> %d height_inc %d -> %d)\n", FLAG_TOGGLED_ON (old, new, PResizeInc) ? "set" : "unset", old->width_inc, new->width_inc, old->height_inc, new->height_inc); if (FLAG_CHANGED (old, new, PAspect)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PAspect now %s (min %d/%d -> %d/%d max %d/%d -> %d/%d)\n", FLAG_TOGGLED_ON (old, new, PAspect) ? "set" : "unset", old->min_aspect.x, old->min_aspect.y, new->min_aspect.x, new->min_aspect.y, old->max_aspect.x, old->max_aspect.y, new->max_aspect.x, new->max_aspect.y); if (FLAG_CHANGED (old, new, PBaseSize)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PBaseSize now %s (%d x %d -> %d x %d)\n", FLAG_TOGGLED_ON (old, new, PBaseSize) ? "set" : "unset", old->base_width, old->base_height, new->base_width, new->base_height); if (FLAG_CHANGED (old, new, PWinGravity)) meta_topic (META_DEBUG_GEOMETRY, "XSizeHints: PWinGravity now %s (%d -> %d)\n", FLAG_TOGGLED_ON (old, new, PWinGravity) ? "set" : "unset", old->win_gravity, new->win_gravity); } void meta_set_normal_hints (MetaWindow *window, XSizeHints *hints) { int x, y, w, h; double minr, maxr; /* Some convenience vars */ int minw, minh, maxw, maxh; /* min/max width/height */ int basew, baseh, winc, hinc; /* base width/height, width/height increment */ /* Save the last ConfigureRequest, which we put here. * Values here set in the hints are supposed to * be ignored. */ x = window->size_hints.x; y = window->size_hints.y; w = window->size_hints.width; h = window->size_hints.height; /* as far as I can tell, value->v.size_hints.flags is just to * check whether we had old-style normal hints without gravity, * base size as returned by XGetNormalHints(), so we don't * really use it as we fixup window->size_hints to have those * fields if they're missing. */ /* * When the window is first created, NULL hints will * be passed in which will initialize all of the fields * as if flags were zero */ if (hints) window->size_hints = *hints; else window->size_hints.flags = 0; /* Put back saved ConfigureRequest. */ window->size_hints.x = x; window->size_hints.y = y; window->size_hints.width = w; window->size_hints.height = h; /* Get base size hints */ if (window->size_hints.flags & PBaseSize) { meta_topic (META_DEBUG_GEOMETRY, "Window %s sets base size %d x %d\n", window->desc, window->size_hints.base_width, window->size_hints.base_height); } else if (window->size_hints.flags & PMinSize) { window->size_hints.base_width = window->size_hints.min_width; window->size_hints.base_height = window->size_hints.min_height; } else { window->size_hints.base_width = 0; window->size_hints.base_height = 0; } window->size_hints.flags |= PBaseSize; /* Get min size hints */ if (window->size_hints.flags & PMinSize) { meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min size %d x %d\n", window->desc, window->size_hints.min_width, window->size_hints.min_height); } else if (window->size_hints.flags & PBaseSize) { window->size_hints.min_width = window->size_hints.base_width; window->size_hints.min_height = window->size_hints.base_height; } else { window->size_hints.min_width = 0; window->size_hints.min_height = 0; } window->size_hints.flags |= PMinSize; /* Get max size hints */ if (window->size_hints.flags & PMaxSize) { meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max size %d x %d\n", window->desc, window->size_hints.max_width, window->size_hints.max_height); } else { window->size_hints.max_width = G_MAXINT; window->size_hints.max_height = G_MAXINT; window->size_hints.flags |= PMaxSize; } /* Get resize increment hints */ if (window->size_hints.flags & PResizeInc) { meta_topic (META_DEBUG_GEOMETRY, "Window %s sets resize width inc: %d height inc: %d\n", window->desc, window->size_hints.width_inc, window->size_hints.height_inc); } else { window->size_hints.width_inc = 1; window->size_hints.height_inc = 1; window->size_hints.flags |= PResizeInc; } /* Get aspect ratio hints */ if (window->size_hints.flags & PAspect) { meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min_aspect: %d/%d max_aspect: %d/%d\n", window->desc, window->size_hints.min_aspect.x, window->size_hints.min_aspect.y, window->size_hints.max_aspect.x, window->size_hints.max_aspect.y); } else { window->size_hints.min_aspect.x = 1; window->size_hints.min_aspect.y = G_MAXINT; window->size_hints.max_aspect.x = G_MAXINT; window->size_hints.max_aspect.y = 1; window->size_hints.flags |= PAspect; } /* Get gravity hint */ if (window->size_hints.flags & PWinGravity) { meta_topic (META_DEBUG_GEOMETRY, "Window %s sets gravity %d\n", window->desc, window->size_hints.win_gravity); } else { meta_topic (META_DEBUG_GEOMETRY, "Window %s doesn't set gravity, using NW\n", window->desc); window->size_hints.win_gravity = NorthWestGravity; window->size_hints.flags |= PWinGravity; } /*** Lots of sanity checking ***/ /* Verify all min & max hints are at least 1 pixel */ if (window->size_hints.min_width < 1) { /* someone is on crack */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min width to 0, which makes no sense\n", window->desc); window->size_hints.min_width = 1; } if (window->size_hints.max_width < 1) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max width to 0, which makes no sense\n", window->desc); window->size_hints.max_width = 1; } if (window->size_hints.min_height < 1) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min height to 0, which makes no sense\n", window->desc); window->size_hints.min_height = 1; } if (window->size_hints.max_height < 1) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max height to 0, which makes no sense\n", window->desc); window->size_hints.max_height = 1; } /* Verify size increment hints are at least 1 pixel */ if (window->size_hints.width_inc < 1) { /* app authors find so many ways to smoke crack */ window->size_hints.width_inc = 1; meta_topic (META_DEBUG_GEOMETRY, "Corrected 0 width_inc to 1\n"); } if (window->size_hints.height_inc < 1) { /* another cracksmoker */ window->size_hints.height_inc = 1; meta_topic (META_DEBUG_GEOMETRY, "Corrected 0 height_inc to 1\n"); } /* divide by 0 cracksmokers; note that x & y in (min|max)_aspect are * numerator & denominator */ if (window->size_hints.min_aspect.y < 1) window->size_hints.min_aspect.y = 1; if (window->size_hints.max_aspect.y < 1) window->size_hints.max_aspect.y = 1; minw = window->size_hints.min_width; minh = window->size_hints.min_height; maxw = window->size_hints.max_width; maxh = window->size_hints.max_height; basew = window->size_hints.base_width; baseh = window->size_hints.base_height; winc = window->size_hints.width_inc; hinc = window->size_hints.height_inc; /* Make sure min and max size hints are consistent with the base + increment * size hints. If they're not, it's not a real big deal, but it means the * effective min and max size are more restrictive than the application * specified values. */ if ((minw - basew) % winc != 0) { /* Take advantage of integer division throwing away the remainder... */ window->size_hints.min_width = basew + ((minw - basew)/winc + 1)*winc; meta_topic (META_DEBUG_GEOMETRY, "Window %s has width_inc (%d) that does not evenly divide " "min_width - base_width (%d - %d); thus effective " "min_width is really %d\n", window->desc, winc, minw, basew, window->size_hints.min_width); minw = window->size_hints.min_width; } if (maxw != G_MAXINT && (maxw - basew) % winc != 0) { /* Take advantage of integer division throwing away the remainder... */ window->size_hints.max_width = basew + ((maxw - basew)/winc)*winc; meta_topic (META_DEBUG_GEOMETRY, "Window %s has width_inc (%d) that does not evenly divide " "max_width - base_width (%d - %d); thus effective " "max_width is really %d\n", window->desc, winc, maxw, basew, window->size_hints.max_width); maxw = window->size_hints.max_width; } if ((minh - baseh) % hinc != 0) { /* Take advantage of integer division throwing away the remainder... */ window->size_hints.min_height = baseh + ((minh - baseh)/hinc + 1)*hinc; meta_topic (META_DEBUG_GEOMETRY, "Window %s has height_inc (%d) that does not evenly divide " "min_height - base_height (%d - %d); thus effective " "min_height is really %d\n", window->desc, hinc, minh, baseh, window->size_hints.min_height); minh = window->size_hints.min_height; } if (maxh != G_MAXINT && (maxh - baseh) % hinc != 0) { /* Take advantage of integer division throwing away the remainder... */ window->size_hints.max_height = baseh + ((maxh - baseh)/hinc)*hinc; meta_topic (META_DEBUG_GEOMETRY, "Window %s has height_inc (%d) that does not evenly divide " "max_height - base_height (%d - %d); thus effective " "max_height is really %d\n", window->desc, hinc, maxh, baseh, window->size_hints.max_height); maxh = window->size_hints.max_height; } /* make sure maximum size hints are compatible with minimum size hints; min * size hints take precedence. */ if (window->size_hints.max_width < window->size_hints.min_width) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max width %d less than min width %d, " "disabling resize\n", window->desc, window->size_hints.max_width, window->size_hints.min_width); maxw = window->size_hints.max_width = window->size_hints.min_width; } if (window->size_hints.max_height < window->size_hints.min_height) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max height %d less than min height %d, " "disabling resize\n", window->desc, window->size_hints.max_height, window->size_hints.min_height); maxh = window->size_hints.max_height = window->size_hints.min_height; } /* Make sure the aspect ratio hints are sane. */ minr = window->size_hints.min_aspect.x / (double)window->size_hints.min_aspect.y; maxr = window->size_hints.max_aspect.x / (double)window->size_hints.max_aspect.y; if (minr > maxr) { /* another cracksmoker; not even minimally (self) consistent */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min aspect ratio larger than max aspect " "ratio; disabling aspect ratio constraints.\n", window->desc); window->size_hints.min_aspect.x = 1; window->size_hints.min_aspect.y = G_MAXINT; window->size_hints.max_aspect.x = G_MAXINT; window->size_hints.max_aspect.y = 1; } else /* check consistency of aspect ratio hints with other hints */ { if (minh > 0 && minr > (maxw / (double)minh)) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets min aspect ratio larger than largest " "aspect ratio possible given min/max size constraints; " "disabling min aspect ratio constraint.\n", window->desc); window->size_hints.min_aspect.x = 1; window->size_hints.min_aspect.y = G_MAXINT; } if (maxr < (minw / (double)maxh)) { /* another cracksmoker */ meta_topic (META_DEBUG_GEOMETRY, "Window %s sets max aspect ratio smaller than smallest " "aspect ratio possible given min/max size constraints; " "disabling max aspect ratio constraint.\n", window->desc); window->size_hints.max_aspect.x = G_MAXINT; window->size_hints.max_aspect.y = 1; } /* FIXME: Would be nice to check that aspect ratios are * consistent with base and size increment constraints. */ } } static void reload_normal_hints (MetaWindow *window, MetaPropValue *value, gboolean initial) { if (value->type != META_PROP_VALUE_INVALID) { XSizeHints old_hints; meta_topic (META_DEBUG_GEOMETRY, "Updating WM_NORMAL_HINTS for %s\n", window->desc); old_hints = window->size_hints; meta_set_normal_hints (window, value->v.size_hints.hints); spew_size_hints_differences (&old_hints, &window->size_hints); meta_window_recalc_features (window); if (!initial) meta_window_queue(window, META_QUEUE_MOVE_RESIZE); } } static void reload_wm_protocols (MetaWindow *window, MetaPropValue *value, gboolean initial) { int i; window->take_focus = FALSE; window->delete_window = FALSE; window->net_wm_ping = FALSE; if (value->type == META_PROP_VALUE_INVALID) return; i = 0; while (i < value->v.atom_list.n_atoms) { if (value->v.atom_list.atoms[i] == window->display->atom_WM_TAKE_FOCUS) window->take_focus = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom_WM_DELETE_WINDOW) window->delete_window = TRUE; else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_PING) window->net_wm_ping = TRUE; ++i; } meta_verbose ("New _NET_STARTUP_ID \"%s\" for %s\n", window->startup_id ? window->startup_id : "unset", window->desc); } static void reload_wm_hints (MetaWindow *window, MetaPropValue *value, gboolean initial) { Window old_group_leader; old_group_leader = window->xgroup_leader; /* Fill in defaults */ window->input = TRUE; window->initially_iconic = FALSE; window->xgroup_leader = None; window->wm_hints_pixmap = None; window->wm_hints_mask = None; if (value->type != META_PROP_VALUE_INVALID) { const XWMHints *hints = value->v.wm_hints; if (hints->flags & InputHint) window->input = hints->input; if (hints->flags & StateHint) window->initially_iconic = (hints->initial_state == IconicState); if (hints->flags & WindowGroupHint) window->xgroup_leader = hints->window_group; if (hints->flags & IconPixmapHint) window->wm_hints_pixmap = hints->icon_pixmap; if (hints->flags & IconMaskHint) window->wm_hints_mask = hints->icon_mask; meta_verbose ("Read WM_HINTS input: %d iconic: %d group leader: 0x%lx pixmap: 0x%lx mask: 0x%lx\n", window->input, window->initially_iconic, window->xgroup_leader, window->wm_hints_pixmap, window->wm_hints_mask); } if (window->xgroup_leader != old_group_leader) { meta_verbose ("Window %s changed its group leader to 0x%lx\n", window->desc, window->xgroup_leader); meta_window_group_leader_changed (window); } meta_icon_cache_property_changed (&window->icon_cache, window->display, XA_WM_HINTS); meta_window_queue (window, META_QUEUE_UPDATE_ICON | META_QUEUE_MOVE_RESIZE); } static void reload_transient_for (MetaWindow *window, MetaPropValue *value, gboolean initial) { window->xtransient_for = None; if (value->type != META_PROP_VALUE_INVALID) window->xtransient_for = value->v.xwindow; /* Make sure transient_for is valid */ if (window->xtransient_for != None && meta_display_lookup_x_window (window->display, window->xtransient_for) == NULL) { meta_warning (_("Invalid WM_TRANSIENT_FOR window 0x%lx specified " "for %s.\n"), window->xtransient_for, window->desc); window->xtransient_for = None; } window->transient_parent_is_root_window = window->xtransient_for == window->screen->xroot; if (window->xtransient_for != None) meta_verbose ("Window %s transient for 0x%lx (root = %d)\n", window->desc, window->xtransient_for, window->transient_parent_is_root_window); else meta_verbose ("Window %s is not transient\n", window->desc); /* may now be a dialog */ meta_window_recalc_window_type (window); /* update stacking constraints */ meta_stack_update_transient (window->screen->stack, window); /* possibly change its group. We treat being a window's transient as * equivalent to making it your group leader, to work around shortcomings * in programs such as xmms-- see #328211. */ if (window->xtransient_for != None && window->xgroup_leader != None && window->xtransient_for != window->xgroup_leader) meta_window_group_leader_changed (window); if (!window->constructing) meta_window_queue (window, META_QUEUE_MOVE_RESIZE); } /** * Initialises the property hooks system. Each row in the table named "hooks" * represents an action to take when a property is found on a newly-created * window, or when a property changes its value. * * The first column shows which atom the row concerns. * The second gives the type of the property data. The property will be * queried for its new value, unless the type is given as * META_PROP_VALUE_INVALID, in which case nothing will be queried. * The third column gives the name of a callback which gets called with the * new value. (If the new value was not retrieved because the second column * was META_PROP_VALUE_INVALID, the callback still gets called anyway.) * This value may be NULL, in which case no callback will be called. */ void meta_display_init_window_prop_hooks (MetaDisplay *display) { MetaWindowPropHooks hooks[] = { { display->atom_WM_STATE, META_PROP_VALUE_INVALID, NULL }, { display->atom_WM_CLIENT_MACHINE, META_PROP_VALUE_STRING, reload_wm_client_machine }, { display->atom__NET_WM_PID, META_PROP_VALUE_CARDINAL, reload_net_wm_pid }, { display->atom__NET_WM_USER_TIME, META_PROP_VALUE_CARDINAL, reload_net_wm_user_time }, { display->atom__NET_WM_NAME, META_PROP_VALUE_UTF8, reload_net_wm_name }, { XA_WM_NAME, META_PROP_VALUE_TEXT_PROPERTY, reload_wm_name }, { display->atom__NET_WM_ICON, META_PROP_VALUE_INVALID, reload_net_wm_icon }, { display->atom__KWM_WIN_ICON, META_PROP_VALUE_INVALID, reload_kwm_win_icon }, { display->atom__NET_WM_ICON_NAME, META_PROP_VALUE_UTF8, reload_net_wm_icon_name }, { XA_WM_ICON_NAME, META_PROP_VALUE_TEXT_PROPERTY, reload_wm_icon_name }, { display->atom__NET_WM_STATE, META_PROP_VALUE_ATOM_LIST, reload_net_wm_state }, { display->atom__MOTIF_WM_HINTS, META_PROP_VALUE_MOTIF_HINTS, reload_mwm_hints }, { display->atom__NET_WM_ICON_GEOMETRY, META_PROP_VALUE_INVALID, NULL }, { XA_WM_CLASS, META_PROP_VALUE_CLASS_HINT, reload_wm_class }, { display->atom_WM_CLIENT_LEADER, META_PROP_VALUE_INVALID, complain_about_broken_client }, { display->atom_SM_CLIENT_ID, META_PROP_VALUE_INVALID, complain_about_broken_client }, { display->atom_WM_WINDOW_ROLE, META_PROP_VALUE_INVALID, reload_wm_window_role }, { display->atom__NET_WM_WINDOW_TYPE, META_PROP_VALUE_INVALID, reload_net_wm_window_type }, { display->atom__NET_WM_DESKTOP, META_PROP_VALUE_CARDINAL, reload_net_wm_desktop }, { display->atom__NET_WM_STRUT, META_PROP_VALUE_INVALID, reload_struts }, { display->atom__NET_WM_STRUT_PARTIAL, META_PROP_VALUE_INVALID, reload_struts }, { display->atom__NET_STARTUP_ID, META_PROP_VALUE_UTF8, reload_net_startup_id }, { display->atom__NET_WM_SYNC_REQUEST_COUNTER, META_PROP_VALUE_SYNC_COUNTER, reload_update_counter }, { XA_WM_NORMAL_HINTS, META_PROP_VALUE_SIZE_HINTS, reload_normal_hints }, { display->atom_WM_PROTOCOLS, META_PROP_VALUE_ATOM_LIST, reload_wm_protocols }, { XA_WM_HINTS, META_PROP_VALUE_WM_HINTS, reload_wm_hints }, { XA_WM_TRANSIENT_FOR, META_PROP_VALUE_WINDOW, reload_transient_for }, { display->atom__NET_WM_USER_TIME_WINDOW, META_PROP_VALUE_WINDOW, reload_net_wm_user_time_window }, { display->atom__GTK_FRAME_EXTENTS, META_PROP_VALUE_CARDINAL_LIST, reload_gtk_frame_extents }, { 0 }, }; MetaWindowPropHooks *table = g_memdup (hooks, sizeof (hooks)), *cursor = table; g_assert (display->prop_hooks == NULL); display->prop_hooks_table = (gpointer) table; display->prop_hooks = g_hash_table_new (NULL, NULL); while (cursor->property) { /* Atoms are safe to use with GINT_TO_POINTER because it's safe with * anything 32 bits or less, and atoms are 32 bits with the top three * bits clear. (Scheifler & Gettys, 2e, p372) */ g_hash_table_insert (display->prop_hooks, GINT_TO_POINTER (cursor->property), cursor); cursor++; } } void meta_display_free_window_prop_hooks (MetaDisplay *display) { g_hash_table_unref (display->prop_hooks); display->prop_hooks = NULL; g_free (display->prop_hooks_table); display->prop_hooks_table = NULL; } /** * Finds the hooks for a particular property. */ static MetaWindowPropHooks* find_hooks (MetaDisplay *display, Atom property) { return g_hash_table_lookup (display->prop_hooks, GINT_TO_POINTER (property)); }