diff options
Diffstat (limited to 'plugins/keybindings/msd-keybindings-manager.c')
| -rw-r--r-- | plugins/keybindings/msd-keybindings-manager.c | 721 |
1 files changed, 721 insertions, 0 deletions
diff --git a/plugins/keybindings/msd-keybindings-manager.c b/plugins/keybindings/msd-keybindings-manager.c new file mode 100644 index 0000000..c554945 --- /dev/null +++ b/plugins/keybindings/msd-keybindings-manager.c @@ -0,0 +1,721 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright (C) 2007 William Jon McCann <[email protected]> + * + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + */ + +#include "config.h" + +#include <sys/types.h> +#include <sys/wait.h> +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> + +#include <locale.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <gdk/gdk.h> +#include <gdk/gdkx.h> +#include <gtk/gtk.h> +#include <X11/keysym.h> +#include <gio/gio.h> +#include <dconf.h> + +#include "mate-settings-profile.h" +#include "msd-keybindings-manager.h" +#include "dconf-util.h" + +#include "msd-keygrab.h" +#include "eggaccelerators.h" + +#define GSETTINGS_KEYBINDINGS_DIR "/org/mate/desktop/keybindings/" +#define CUSTOM_KEYBINDING_SCHEMA "org.mate.control-center.keybinding" + +#define MSD_KEYBINDINGS_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MSD_TYPE_KEYBINDINGS_MANAGER, MsdKeybindingsManagerPrivate)) + +typedef struct { + char *binding_str; + char *action; + char *settings_path; + Key key; + Key previous_key; +} Binding; + +struct MsdKeybindingsManagerPrivate +{ + DConfClient *client; + GSList *binding_list; + GSList *screens; +}; + +static void msd_keybindings_manager_class_init (MsdKeybindingsManagerClass *klass); +static void msd_keybindings_manager_init (MsdKeybindingsManager *keybindings_manager); +static void msd_keybindings_manager_finalize (GObject *object); + +G_DEFINE_TYPE (MsdKeybindingsManager, msd_keybindings_manager, G_TYPE_OBJECT) + +static gpointer manager_object = NULL; + +static GSList * +get_screens_list (void) +{ + GdkDisplay *display = gdk_display_get_default(); + int n_screens; + GSList *list = NULL; + int i; + + n_screens = gdk_display_get_n_screens (display); + + if (n_screens == 1) { + list = g_slist_append (list, gdk_screen_get_default ()); + } else { + for (i = 0; i < n_screens; i++) { + GdkScreen *screen; + + screen = gdk_display_get_screen (display, i); + if (screen != NULL) { + list = g_slist_prepend (list, screen); + } + } + list = g_slist_reverse (list); + } + + return list; +} + +static gboolean +parse_binding (Binding *binding) +{ + gboolean success; + + g_return_val_if_fail (binding != NULL, FALSE); + + binding->key.keysym = 0; + binding->key.state = 0; + g_free (binding->key.keycodes); + binding->key.keycodes = NULL; + + if (binding->binding_str == NULL || + binding->binding_str[0] == '\0' || + g_strcmp0 (binding->binding_str, "Disabled") == 0 || + g_strcmp0 (binding->binding_str, "disabled") == 0 ) { + return FALSE; + } + + success = egg_accelerator_parse_virtual (binding->binding_str, + &binding->key.keysym, + &binding->key.keycodes, + &binding->key.state); + + if (!success) + g_warning (_("Key binding (%s) is invalid"), binding->settings_path); + + return success; +} + +static gint +compare_bindings (gconstpointer a, + gconstpointer b) +{ + Binding *key_a = (Binding *) a; + char *key_b = (char *) b; + + return g_strcmp0 (key_b, key_a->settings_path); +} + +static gboolean +bindings_get_entry (MsdKeybindingsManager *manager, + const char *settings_path) +{ + GSettings *settings; + Binding *new_binding; + GSList *tmp_elem; + char *action = NULL; + char *key = NULL; + + if (!settings_path) { + return FALSE; + } + + /* Get entries for this binding */ + settings = g_settings_new_with_path (CUSTOM_KEYBINDING_SCHEMA, settings_path); + action = g_settings_get_string (settings, "action"); + key = g_settings_get_string (settings, "binding"); + g_object_unref (settings); + + if (!action || !key) { + g_warning (_("Key binding (%s) is incomplete"), settings_path); + g_free (action); + g_free (key); + return FALSE; + } + + g_debug ("keybindings: get entries from '%s' (action: '%s', key: '%s')", settings_path, action, key); + + tmp_elem = g_slist_find_custom (manager->priv->binding_list, + settings_path, + compare_bindings); + + if (!tmp_elem) { + new_binding = g_new0 (Binding, 1); + } else { + new_binding = (Binding *) tmp_elem->data; + g_free (new_binding->binding_str); + g_free (new_binding->action); + g_free (new_binding->settings_path); + + new_binding->previous_key.keysym = new_binding->key.keysym; + new_binding->previous_key.state = new_binding->key.state; + new_binding->previous_key.keycodes = new_binding->key.keycodes; + new_binding->key.keycodes = NULL; + } + + new_binding->binding_str = key; + new_binding->action = action; + new_binding->settings_path = g_strdup (settings_path); + + if (parse_binding (new_binding)) { + if (!tmp_elem) + manager->priv->binding_list = g_slist_prepend (manager->priv->binding_list, new_binding); + } else { + g_free (new_binding->binding_str); + g_free (new_binding->action); + g_free (new_binding->settings_path); + g_free (new_binding->previous_key.keycodes); + g_free (new_binding); + + if (tmp_elem) + manager->priv->binding_list = g_slist_delete_link (manager->priv->binding_list, tmp_elem); + return FALSE; + } + + return TRUE; +} + +static void +bindings_clear (MsdKeybindingsManager *manager) +{ + MsdKeybindingsManagerPrivate *p = manager->priv; + GSList *l; + + if (p->binding_list != NULL) + { + for (l = p->binding_list; l; l = l->next) { + Binding *b = l->data; + g_free (b->binding_str); + g_free (b->action); + g_free (b->settings_path); + g_free (b->previous_key.keycodes); + g_free (b->key.keycodes); + g_free (b); + } + g_slist_free (p->binding_list); + p->binding_list = NULL; + } +} + +static void +bindings_get_entries (MsdKeybindingsManager *manager) +{ + gchar **custom_list = NULL; + gint i; + + bindings_clear (manager); + + custom_list = dconf_util_list_subdirs (GSETTINGS_KEYBINDINGS_DIR, FALSE); + + if (custom_list != NULL) + { + for (i = 0; custom_list[i] != NULL; i++) + { + gchar *settings_path; + settings_path = g_strdup_printf("%s%s", GSETTINGS_KEYBINDINGS_DIR, custom_list[i]); + bindings_get_entry (manager, settings_path); + g_free (settings_path); + } + g_strfreev (custom_list); + } + +} + +static gboolean +same_keycode (const Key *key, const Key *other) +{ + if (key->keycodes != NULL && other->keycodes != NULL) { + guint *c; + + for (c = key->keycodes; *c; ++c) { + if (key_uses_keycode (other, *c)) + return TRUE; + } + } + return FALSE; +} + +static gboolean +same_key (const Key *key, const Key *other) +{ + if (key->state == other->state) { + if (key->keycodes != NULL && other->keycodes != NULL) { + guint *c1, *c2; + + for (c1 = key->keycodes, c2 = other->keycodes; + *c1 || *c2; ++c1, ++c2) { + if (*c1 != *c2) + return FALSE; + } + } else if (key->keycodes != NULL || other->keycodes != NULL) + return FALSE; + + + return TRUE; + } + + return FALSE; +} + +static gboolean +key_already_used (MsdKeybindingsManager *manager, + Binding *binding) +{ + GSList *li; + + for (li = manager->priv->binding_list; li != NULL; li = li->next) { + Binding *tmp_binding = (Binding*) li->data; + + if (tmp_binding != binding && + same_keycode (&tmp_binding->key, &binding->key) && + tmp_binding->key.state == binding->key.state) { + return TRUE; + } + } + + return FALSE; +} + +static void +binding_unregister_keys (MsdKeybindingsManager *manager) +{ + GSList *li; + gboolean need_flush = FALSE; + + gdk_error_trap_push (); + + for (li = manager->priv->binding_list; li != NULL; li = li->next) { + Binding *binding = (Binding *) li->data; + + if (binding->key.keycodes) { + need_flush = TRUE; + grab_key_unsafe (&binding->key, FALSE, manager->priv->screens); + } + } + + if (need_flush) + gdk_flush (); + gdk_error_trap_pop (); +} + +static void +binding_register_keys (MsdKeybindingsManager *manager) +{ + GSList *li; + gboolean need_flush = FALSE; + + gdk_error_trap_push (); + + /* Now check for changes and grab new key if not already used */ + for (li = manager->priv->binding_list; li != NULL; li = li->next) { + Binding *binding = (Binding *) li->data; + + if (!same_key (&binding->previous_key, &binding->key)) { + /* Ungrab key if it changed and not clashing with previously set binding */ + if (!key_already_used (manager, binding)) { + gint i; + + need_flush = TRUE; + if (binding->previous_key.keycodes) { + grab_key_unsafe (&binding->previous_key, FALSE, manager->priv->screens); + } + grab_key_unsafe (&binding->key, TRUE, manager->priv->screens); + + binding->previous_key.keysym = binding->key.keysym; + binding->previous_key.state = binding->key.state; + g_free (binding->previous_key.keycodes); + for (i = 0; binding->key.keycodes[i]; ++i); + binding->previous_key.keycodes = g_new0 (guint, i); + for (i = 0; binding->key.keycodes[i]; ++i) + binding->previous_key.keycodes[i] = binding->key.keycodes[i]; + } else + g_warning ("Key binding (%s) is already in use", binding->binding_str); + } + } + + if (need_flush) + gdk_flush (); + if (gdk_error_trap_pop ()) + g_warning ("Grab failed for some keys, another application may already have access the them."); + +} + +extern char **environ; + +static char * +screen_exec_display_string (GdkScreen *screen) +{ + GString *str; + const char *old_display; + char *p; + + g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL); + + old_display = gdk_display_get_name (gdk_screen_get_display (screen)); + + str = g_string_new ("DISPLAY="); + g_string_append (str, old_display); + + p = strrchr (str->str, '.'); + if (p && p > strchr (str->str, ':')) { + g_string_truncate (str, p - str->str); + } + + g_string_append_printf (str, ".%d", gdk_screen_get_number (screen)); + + return g_string_free (str, FALSE); +} + +/** + * get_exec_environment: + * + * Description: Modifies the current program environment to + * ensure that $DISPLAY is set such that a launched application + * inheriting this environment would appear on screen. + * + * Returns: a newly-allocated %NULL-terminated array of strings or + * %NULL on error. Use g_strfreev() to free it. + * + * mainly ripped from egg_screen_exec_display_string in + * mate-panel/egg-screen-exec.c + **/ +static char ** +get_exec_environment (XEvent *xevent) +{ + char **retval = NULL; + int i; + int display_index = -1; + GdkScreen *screen = NULL; + GdkWindow *window = gdk_xid_table_lookup (xevent->xkey.root); + + if (window) { + screen = gdk_drawable_get_screen (GDK_DRAWABLE (window)); + } + + g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL); + + for (i = 0; environ [i]; i++) { + if (!strncmp (environ [i], "DISPLAY", 7)) { + display_index = i; + } + } + + if (display_index == -1) { + display_index = i++; + } + + retval = g_new (char *, i + 1); + + for (i = 0; environ [i]; i++) { + if (i == display_index) { + retval [i] = screen_exec_display_string (screen); + } else { + retval [i] = g_strdup (environ [i]); + } + } + + retval [i] = NULL; + + return retval; +} + +static GdkFilterReturn +keybindings_filter (GdkXEvent *gdk_xevent, + GdkEvent *event, + MsdKeybindingsManager *manager) +{ + XEvent *xevent = (XEvent *) gdk_xevent; + GSList *li; + + if (xevent->type != KeyPress) { + return GDK_FILTER_CONTINUE; + } + + for (li = manager->priv->binding_list; li != NULL; li = li->next) { + Binding *binding = (Binding *) li->data; + + if (match_key (&binding->key, xevent)) { + GError *error = NULL; + gboolean retval; + gchar **argv = NULL; + gchar **envp = NULL; + + g_return_val_if_fail (binding->action != NULL, GDK_FILTER_CONTINUE); + + if (!g_shell_parse_argv (binding->action, + NULL, &argv, + &error)) { + return GDK_FILTER_CONTINUE; + } + + envp = get_exec_environment (xevent); + + retval = g_spawn_async (NULL, + argv, + envp, + G_SPAWN_SEARCH_PATH, + NULL, + NULL, + NULL, + &error); + g_strfreev (argv); + g_strfreev (envp); + + if (!retval) { + GtkWidget *dialog = gtk_message_dialog_new (NULL, 0, GTK_MESSAGE_WARNING, + GTK_BUTTONS_CLOSE, + _("Error while trying to run (%s)\n"\ + "which is linked to the key (%s)"), + binding->action, + binding->binding_str); + g_signal_connect (dialog, + "response", + G_CALLBACK (gtk_widget_destroy), + NULL); + gtk_widget_show (dialog); + } + return GDK_FILTER_REMOVE; + } + } + return GDK_FILTER_CONTINUE; +} + +static void +bindings_callback (DConfClient *client, + #ifdef HAVE_DCONF_0_13 + gchar *prefix, + GStrv changes, + #else + const gchar *path, + const gchar * const *items, + gint n_items, + #endif + gchar *tag, + MsdKeybindingsManager *manager) +{ + g_debug ("keybindings: received 'changed' signal from dconf"); + + binding_unregister_keys (manager); + + bindings_get_entries (manager); + + binding_register_keys (manager); +} + +gboolean +msd_keybindings_manager_start (MsdKeybindingsManager *manager, + GError **error) +{ + GdkDisplay *dpy; + GdkScreen *screen; + int screen_num; + int i; + + g_debug ("Starting keybindings manager"); + mate_settings_profile_start (NULL); + + dpy = gdk_display_get_default (); + screen_num = gdk_display_get_n_screens (dpy); + + for (i = 0; i < screen_num; i++) { + screen = gdk_display_get_screen (dpy, i); + gdk_window_add_filter (gdk_screen_get_root_window (screen), + (GdkFilterFunc) keybindings_filter, + manager); + } + manager->priv->screens = get_screens_list (); + + manager->priv->binding_list = NULL; + bindings_get_entries (manager); + binding_register_keys (manager); + + /* DConf has different API between versions: + * http://developer.gnome.org/dconf/0.12/DConfClient.html + * http://developer.gnome.org/dconf/0.14/DConfClient.html + */ + #ifdef HAVE_DCONF_0_13 + manager->priv->client = dconf_client_new (); + dconf_client_watch_fast (manager->priv->client, GSETTINGS_KEYBINDINGS_DIR); + g_signal_connect (manager->priv->client, "changed", G_CALLBACK (bindings_callback), manager); + #else + manager->priv->client = dconf_client_new (NULL, (DConfWatchFunc) bindings_callback, manager, NULL); + dconf_client_watch (manager->priv->client, GSETTINGS_KEYBINDINGS_DIR, NULL, NULL); + #endif + + mate_settings_profile_end (NULL); + + return TRUE; +} + +void +msd_keybindings_manager_stop (MsdKeybindingsManager *manager) +{ + MsdKeybindingsManagerPrivate *p = manager->priv; + GSList *l; + + g_debug ("Stopping keybindings manager"); + + if (p->client != NULL) { + g_object_unref (p->client); + p->client = NULL; + } + + for (l = p->screens; l; l = l->next) { + GdkScreen *screen = l->data; + gdk_window_remove_filter (gdk_screen_get_root_window (screen), + (GdkFilterFunc) keybindings_filter, + manager); + } + + binding_unregister_keys (manager); + bindings_clear (manager); + + g_slist_free (p->screens); + p->screens = NULL; +} + +static void +msd_keybindings_manager_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + MsdKeybindingsManager *self; + + self = MSD_KEYBINDINGS_MANAGER (object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +msd_keybindings_manager_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + MsdKeybindingsManager *self; + + self = MSD_KEYBINDINGS_MANAGER (object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GObject * +msd_keybindings_manager_constructor (GType type, + guint n_construct_properties, + GObjectConstructParam *construct_properties) +{ + MsdKeybindingsManager *keybindings_manager; + MsdKeybindingsManagerClass *klass; + + klass = MSD_KEYBINDINGS_MANAGER_CLASS (g_type_class_peek (MSD_TYPE_KEYBINDINGS_MANAGER)); + + keybindings_manager = MSD_KEYBINDINGS_MANAGER (G_OBJECT_CLASS (msd_keybindings_manager_parent_class)->constructor (type, + n_construct_properties, + construct_properties)); + + return G_OBJECT (keybindings_manager); +} + +static void +msd_keybindings_manager_dispose (GObject *object) +{ + MsdKeybindingsManager *keybindings_manager; + + keybindings_manager = MSD_KEYBINDINGS_MANAGER (object); + + G_OBJECT_CLASS (msd_keybindings_manager_parent_class)->dispose (object); +} + +static void +msd_keybindings_manager_class_init (MsdKeybindingsManagerClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->get_property = msd_keybindings_manager_get_property; + object_class->set_property = msd_keybindings_manager_set_property; + object_class->constructor = msd_keybindings_manager_constructor; + object_class->dispose = msd_keybindings_manager_dispose; + object_class->finalize = msd_keybindings_manager_finalize; + + g_type_class_add_private (klass, sizeof (MsdKeybindingsManagerPrivate)); +} + +static void +msd_keybindings_manager_init (MsdKeybindingsManager *manager) +{ + manager->priv = MSD_KEYBINDINGS_MANAGER_GET_PRIVATE (manager); + +} + +static void +msd_keybindings_manager_finalize (GObject *object) +{ + MsdKeybindingsManager *keybindings_manager; + + g_return_if_fail (object != NULL); + g_return_if_fail (MSD_IS_KEYBINDINGS_MANAGER (object)); + + keybindings_manager = MSD_KEYBINDINGS_MANAGER (object); + + g_return_if_fail (keybindings_manager->priv != NULL); + + G_OBJECT_CLASS (msd_keybindings_manager_parent_class)->finalize (object); +} + +MsdKeybindingsManager * +msd_keybindings_manager_new (void) +{ + if (manager_object != NULL) { + g_object_ref (manager_object); + } else { + manager_object = g_object_new (MSD_TYPE_KEYBINDINGS_MANAGER, NULL); + g_object_add_weak_pointer (manager_object, + (gpointer *) &manager_object); + } + + return MSD_KEYBINDINGS_MANAGER (manager_object); +} |