2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2010 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * src/config.c: Contains all functions handling the configuration file (calling
11 * the parser (src/cfgparse.y) with the correct path, switching key bindings
16 /* We need Xlib for XStringToKeysym */
21 char *current_configpath = NULL;
23 struct modes_head modes;
26 * Ungrabs all keys, to be called before re-grabbing the keys because of a
27 * mapping_notify event or a configuration file reload
30 void ungrab_all_keys(xcb_connection_t *conn) {
31 DLOG("Ungrabbing all keys\n");
32 xcb_ungrab_key(conn, XCB_GRAB_ANY, root, XCB_BUTTON_MASK_ANY);
35 static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
36 DLOG("Grabbing %d\n", keycode);
37 /* Grab the key in all combinations */
38 #define GRAB_KEY(modifier) \
40 xcb_grab_key(conn, 0, root, modifier, keycode, \
41 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC); \
43 int mods = bind->mods;
44 if ((bind->mods & BIND_MODE_SWITCH) != 0) {
45 mods &= ~BIND_MODE_SWITCH;
47 mods = XCB_MOD_MASK_ANY;
50 GRAB_KEY(mods | xcb_numlock_mask);
51 GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
55 * Returns a pointer to the Binding with the specified modifiers and keycode
56 * or NULL if no such binding exists.
59 Binding *get_binding(uint16_t modifiers, xcb_keycode_t keycode) {
62 TAILQ_FOREACH(bind, bindings, bindings) {
63 /* First compare the modifiers */
64 if (bind->mods != modifiers)
67 /* If a symbol was specified by the user, we need to look in
68 * the array of translated keycodes for the event’s keycode */
69 if (bind->symbol != NULL) {
70 if (memmem(bind->translated_to,
71 bind->number_keycodes * sizeof(xcb_keycode_t),
72 &keycode, sizeof(xcb_keycode_t)) != NULL)
75 /* This case is easier: The user specified a keycode */
76 if (bind->keycode == keycode)
81 return (bind == TAILQ_END(bindings) ? NULL : bind);
85 * Translates keysymbols to keycodes for all bindings which use keysyms.
88 void translate_keysyms() {
90 TAILQ_FOREACH(bind, bindings, bindings) {
91 if (bind->keycode > 0)
94 /* We need to translate the symbol to a keycode */
95 xcb_keysym_t keysym = XStringToKeysym(bind->symbol);
96 if (keysym == NoSymbol) {
97 ELOG("Could not translate string to key symbol: \"%s\"\n", bind->symbol);
101 uint32_t last_keycode = 0;
102 xcb_keycode_t *keycodes = xcb_key_symbols_get_keycode(keysyms, keysym);
103 if (keycodes == NULL) {
104 DLOG("Could not translate symbol \"%s\"\n", bind->symbol);
108 bind->number_keycodes = 0;
110 for (xcb_keycode_t *walk = keycodes; *walk != 0; walk++) {
111 /* We hope duplicate keycodes will be returned in order
113 if (last_keycode == *walk)
115 last_keycode = *walk;
116 bind->number_keycodes++;
118 DLOG("Translated symbol \"%s\" to %d keycode\n", bind->symbol, bind->number_keycodes);
119 bind->translated_to = smalloc(bind->number_keycodes * sizeof(xcb_keycode_t));
120 memcpy(bind->translated_to, keycodes, bind->number_keycodes * sizeof(xcb_keycode_t));
126 * Grab the bound keys (tell X to send us keypress events for those keycodes)
129 void grab_all_keys(xcb_connection_t *conn, bool bind_mode_switch) {
131 TAILQ_FOREACH(bind, bindings, bindings) {
132 if ((bind_mode_switch && (bind->mods & BIND_MODE_SWITCH) == 0) ||
133 (!bind_mode_switch && (bind->mods & BIND_MODE_SWITCH) != 0))
136 /* The easy case: the user specified a keycode directly. */
137 if (bind->keycode > 0) {
138 grab_keycode_for_binding(conn, bind, bind->keycode);
142 xcb_keycode_t *walk = bind->translated_to;
143 for (int i = 0; i < bind->number_keycodes; i++)
144 grab_keycode_for_binding(conn, bind, *walk++);
149 * Switches the key bindings to the given mode, if the mode exists
152 void switch_mode(const char *new_mode) {
155 LOG("Switching to mode %s\n", new_mode);
157 SLIST_FOREACH(mode, &modes, modes) {
158 if (strcasecmp(mode->name, new_mode) != 0)
161 ungrab_all_keys(conn);
162 bindings = mode->bindings;
164 grab_all_keys(conn, false);
168 ELOG("ERROR: Mode not found\n");
172 * Get the path of the first configuration file found. If override_configpath
173 * is specified, that path is returned and saved for further calls. Otherwise,
174 * checks the home directory first, then the system directory first, always
175 * taking into account the XDG Base Directory Specification ($XDG_CONFIG_HOME,
179 static char *get_config_path(const char *override_configpath) {
180 char *xdg_config_home, *xdg_config_dirs, *config_path;
182 static const char *saved_configpath = NULL;
184 if (override_configpath != NULL) {
185 saved_configpath = override_configpath;
186 return sstrdup(saved_configpath);
189 if (saved_configpath != NULL)
190 return sstrdup(saved_configpath);
192 /* 1: check the traditional path under the home directory */
193 config_path = resolve_tilde("~/.i3/config");
194 if (path_exists(config_path))
197 /* 2: check for $XDG_CONFIG_HOME/i3/config */
198 if ((xdg_config_home = getenv("XDG_CONFIG_HOME")) == NULL)
199 xdg_config_home = "~/.config";
201 xdg_config_home = resolve_tilde(xdg_config_home);
202 if (asprintf(&config_path, "%s/i3/config", xdg_config_home) == -1)
203 die("asprintf() failed");
204 free(xdg_config_home);
206 if (path_exists(config_path))
210 /* 3: check the traditional path under /etc */
211 config_path = SYSCONFDIR "/i3/config";
212 if (path_exists(config_path))
213 return sstrdup(config_path);
215 /* 4: check for $XDG_CONFIG_DIRS/i3/config */
216 if ((xdg_config_dirs = getenv("XDG_CONFIG_DIRS")) == NULL)
217 xdg_config_dirs = "/etc/xdg";
219 char *buf = sstrdup(xdg_config_dirs);
220 char *tok = strtok(buf, ":");
221 while (tok != NULL) {
222 tok = resolve_tilde(tok);
223 if (asprintf(&config_path, "%s/i3/config", tok) == -1)
224 die("asprintf() failed");
226 if (path_exists(config_path)) {
231 tok = strtok(NULL, ":");
235 die("Unable to find the configuration file (looked at "
236 "~/.i3/config, $XDG_CONFIG_HOME/i3/config, "
237 SYSCONFDIR "i3/config and $XDG_CONFIG_DIRS/i3/config)");
241 * Finds the configuration file to use (either the one specified by
242 * override_configpath), the user’s one or the system default) and calls
246 static void parse_configuration(const char *override_configpath) {
247 char *path = get_config_path(override_configpath);
248 DLOG("Parsing configfile %s\n", path);
249 FREE(current_configpath);
250 current_configpath = path;
255 * (Re-)loads the configuration file (sets useful defaults before).
258 void load_configuration(xcb_connection_t *conn, const char *override_configpath, bool reload) {
260 /* First ungrab the keys */
261 ungrab_all_keys(conn);
265 while (!SLIST_EMPTY(&modes)) {
266 mode = SLIST_FIRST(&modes);
269 /* Clear the old binding list */
270 bindings = mode->bindings;
271 while (!TAILQ_EMPTY(bindings)) {
272 bind = TAILQ_FIRST(bindings);
273 TAILQ_REMOVE(bindings, bind, bindings);
274 FREE(bind->translated_to);
279 SLIST_REMOVE(&modes, mode, Mode, modes);
283 struct Assignment *assign;
284 while (!TAILQ_EMPTY(&assignments)) {
285 assign = TAILQ_FIRST(&assignments);
286 FREE(assign->windowclass_title);
287 TAILQ_REMOVE(&assignments, assign, assignments);
292 /* Clear workspace names */
295 TAILQ_FOREACH(ws, workspaces, workspaces)
296 workspace_set_name(ws, NULL);
302 struct Mode *default_mode = scalloc(sizeof(struct Mode));
303 default_mode->name = sstrdup("default");
304 default_mode->bindings = scalloc(sizeof(struct bindings_head));
305 TAILQ_INIT(default_mode->bindings);
306 SLIST_INSERT_HEAD(&modes, default_mode, modes);
308 bindings = default_mode->bindings;
310 #define REQUIRED_OPTION(name) \
311 if (config.name == NULL) \
312 die("You did not specify required configuration option " #name "\n");
314 /* Clear the old config or initialize the data structure */
315 memset(&config, 0, sizeof(config));
317 /* Initialize default colors */
318 #define INIT_COLOR(x, cborder, cbackground, ctext) \
320 x.border = get_colorpixel(cborder); \
321 x.background = get_colorpixel(cbackground); \
322 x.text = get_colorpixel(ctext); \
325 config.client.background = get_colorpixel("#000000");
326 INIT_COLOR(config.client.focused, "#4c7899", "#285577", "#ffffff");
327 INIT_COLOR(config.client.focused_inactive, "#333333", "#5f676a", "#ffffff");
328 INIT_COLOR(config.client.unfocused, "#333333", "#222222", "#888888");
329 INIT_COLOR(config.client.urgent, "#2f343a", "#900000", "#ffffff");
330 INIT_COLOR(config.bar.focused, "#4c7899", "#285577", "#ffffff");
331 INIT_COLOR(config.bar.unfocused, "#333333", "#222222", "#888888");
332 INIT_COLOR(config.bar.urgent, "#2f343a", "#900000", "#ffffff");
334 config.default_border = BS_NORMAL;
335 /* Set default_orientation to NO_ORIENTATION for auto orientation. */
336 config.default_orientation = NO_ORIENTATION;
338 parse_configuration(override_configpath);
342 grab_all_keys(conn, false);
345 if (config.font.id == 0) {
346 ELOG("You did not specify required configuration option \"font\"\n");
347 config.font = load_font("fixed", true);
351 /* Set an empty name for every workspace which got no name */
353 TAILQ_FOREACH(ws, workspaces, workspaces) {
354 if (ws->name != NULL) {
355 /* If the font was not specified when the workspace name
356 * was loaded, we need to predict the text width now */
357 if (ws->text_width == 0)
358 ws->text_width = predict_text_width(global_conn,
359 config.font, ws->name, ws->name_len);
363 workspace_set_name(ws, NULL);