gri3-wm/src/config.c

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/*
* vim:ts=4:sw=4:expandtab
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*
* i3 - an improved dynamic tiling window manager
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
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*
* config.c: Configuration file (calling the parser (src/cfgparse.y) with the
* correct path, switching key bindings mode).
*
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*/
#include "all.h"
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/* We need Xlib for XStringToKeysym */
#include <X11/Xlib.h>
char *current_configpath = NULL;
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Config config;
struct modes_head modes;
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struct barconfig_head barconfigs = TAILQ_HEAD_INITIALIZER(barconfigs);
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/**
* Ungrabs all keys, to be called before re-grabbing the keys because of a
* mapping_notify event or a configuration file reload
*
*/
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void ungrab_all_keys(xcb_connection_t *conn) {
DLOG("Ungrabbing all keys\n");
xcb_ungrab_key(conn, XCB_GRAB_ANY, root, XCB_BUTTON_MASK_ANY);
}
static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
DLOG("Grabbing %d\n", keycode);
/* Grab the key in all combinations */
#define GRAB_KEY(modifier) \
do { \
xcb_grab_key(conn, 0, root, modifier, keycode, \
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC); \
} while (0)
int mods = bind->mods;
if ((bind->mods & BIND_MODE_SWITCH) != 0) {
mods &= ~BIND_MODE_SWITCH;
if (mods == 0)
mods = XCB_MOD_MASK_ANY;
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}
GRAB_KEY(mods);
GRAB_KEY(mods | xcb_numlock_mask);
GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
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}
/*
* Returns a pointer to the Binding with the specified modifiers and keycode
* or NULL if no such binding exists.
*
*/
Binding *get_binding(uint16_t modifiers, xcb_keycode_t keycode) {
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Binding *bind;
TAILQ_FOREACH(bind, bindings, bindings) {
/* First compare the modifiers */
if (bind->mods != modifiers)
continue;
/* If a symbol was specified by the user, we need to look in
* the array of translated keycodes for the events keycode */
if (bind->symbol != NULL) {
if (memmem(bind->translated_to,
bind->number_keycodes * sizeof(xcb_keycode_t),
&keycode, sizeof(xcb_keycode_t)) != NULL)
break;
} else {
/* This case is easier: The user specified a keycode */
if (bind->keycode == keycode)
break;
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}
}
return (bind == TAILQ_END(bindings) ? NULL : bind);
}
/*
* Translates keysymbols to keycodes for all bindings which use keysyms.
*
*/
void translate_keysyms(void) {
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Binding *bind;
xcb_keysym_t keysym;
int col;
xcb_keycode_t i,
min_keycode = xcb_get_setup(conn)->min_keycode,
max_keycode = xcb_get_setup(conn)->max_keycode;
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TAILQ_FOREACH(bind, bindings, bindings) {
if (bind->keycode > 0)
continue;
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/* We need to translate the symbol to a keycode */
keysym = XStringToKeysym(bind->symbol);
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if (keysym == NoSymbol) {
ELOG("Could not translate string to key symbol: \"%s\"\n",
bind->symbol);
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continue;
}
/* Base column we use for looking up key symbols. We always consider
* the base column and the corresponding shift column, so without
* mode_switch, we look in 0 and 1, with mode_switch we look in 2 and
* 3. */
col = (bind->mods & BIND_MODE_SWITCH ? 2 : 0);
FREE(bind->translated_to);
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bind->number_keycodes = 0;
for (i = min_keycode; i && i <= max_keycode; i++) {
if ((xcb_key_symbols_get_keysym(keysyms, i, col) != keysym) &&
(xcb_key_symbols_get_keysym(keysyms, i, col+1) != keysym))
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continue;
bind->number_keycodes++;
bind->translated_to = srealloc(bind->translated_to,
(sizeof(xcb_keycode_t) *
bind->number_keycodes));
bind->translated_to[bind->number_keycodes-1] = i;
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}
DLOG("Translated symbol \"%s\" to %d keycode\n", bind->symbol,
bind->number_keycodes);
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}
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}
/*
* Grab the bound keys (tell X to send us keypress events for those keycodes)
*
*/
void grab_all_keys(xcb_connection_t *conn, bool bind_mode_switch) {
Binding *bind;
TAILQ_FOREACH(bind, bindings, bindings) {
if ((bind_mode_switch && (bind->mods & BIND_MODE_SWITCH) == 0) ||
(!bind_mode_switch && (bind->mods & BIND_MODE_SWITCH) != 0))
continue;
/* The easy case: the user specified a keycode directly. */
if (bind->keycode > 0) {
grab_keycode_for_binding(conn, bind, bind->keycode);
continue;
}
xcb_keycode_t *walk = bind->translated_to;
for (int i = 0; i < bind->number_keycodes; i++)
grab_keycode_for_binding(conn, bind, *walk++);
}
}
/*
* Switches the key bindings to the given mode, if the mode exists
*
*/
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void switch_mode(const char *new_mode) {
struct Mode *mode;
LOG("Switching to mode %s\n", new_mode);
SLIST_FOREACH(mode, &modes, modes) {
if (strcasecmp(mode->name, new_mode) != 0)
continue;
ungrab_all_keys(conn);
bindings = mode->bindings;
translate_keysyms();
grab_all_keys(conn, false);
return;
}
ELOG("ERROR: Mode not found\n");
}
/*
* Get the path of the first configuration file found. If override_configpath
* is specified, that path is returned and saved for further calls. Otherwise,
* checks the home directory first, then the system directory first, always
* taking into account the XDG Base Directory Specification ($XDG_CONFIG_HOME,
* $XDG_CONFIG_DIRS)
*
*/
static char *get_config_path(const char *override_configpath) {
char *xdg_config_home, *xdg_config_dirs, *config_path;
static const char *saved_configpath = NULL;
if (override_configpath != NULL) {
saved_configpath = override_configpath;
return sstrdup(saved_configpath);
}
if (saved_configpath != NULL)
return sstrdup(saved_configpath);
/* 1: check the traditional path under the home directory */
config_path = resolve_tilde("~/.i3/config");
if (path_exists(config_path))
return config_path;
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free(config_path);
/* 2: check for $XDG_CONFIG_HOME/i3/config */
if ((xdg_config_home = getenv("XDG_CONFIG_HOME")) == NULL)
xdg_config_home = "~/.config";
xdg_config_home = resolve_tilde(xdg_config_home);
sasprintf(&config_path, "%s/i3/config", xdg_config_home);
free(xdg_config_home);
if (path_exists(config_path))
return config_path;
free(config_path);
/* 3: check the traditional path under /etc */
config_path = SYSCONFDIR "/i3/config";
if (path_exists(config_path))
return sstrdup(config_path);
/* 4: check for $XDG_CONFIG_DIRS/i3/config */
if ((xdg_config_dirs = getenv("XDG_CONFIG_DIRS")) == NULL)
xdg_config_dirs = "/etc/xdg";
char *buf = sstrdup(xdg_config_dirs);
char *tok = strtok(buf, ":");
while (tok != NULL) {
tok = resolve_tilde(tok);
sasprintf(&config_path, "%s/i3/config", tok);
free(tok);
if (path_exists(config_path)) {
free(buf);
return config_path;
}
free(config_path);
tok = strtok(NULL, ":");
}
free(buf);
die("Unable to find the configuration file (looked at "
"~/.i3/config, $XDG_CONFIG_HOME/i3/config, "
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SYSCONFDIR "/i3/config and $XDG_CONFIG_DIRS/i3/config)");
}
/*
* Finds the configuration file to use (either the one specified by
* override_configpath), the users one or the system default) and calls
* parse_file().
*
*/
static void parse_configuration(const char *override_configpath) {
char *path = get_config_path(override_configpath);
LOG("Parsing configfile %s\n", path);
FREE(current_configpath);
current_configpath = path;
parse_file(path);
}
/*
* (Re-)loads the configuration file (sets useful defaults before).
*
*/
void load_configuration(xcb_connection_t *conn, const char *override_configpath, bool reload) {
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if (reload) {
/* First ungrab the keys */
ungrab_all_keys(conn);
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struct Mode *mode;
Binding *bind;
while (!SLIST_EMPTY(&modes)) {
mode = SLIST_FIRST(&modes);
FREE(mode->name);
/* Clear the old binding list */
bindings = mode->bindings;
while (!TAILQ_EMPTY(bindings)) {
bind = TAILQ_FIRST(bindings);
TAILQ_REMOVE(bindings, bind, bindings);
FREE(bind->translated_to);
FREE(bind->command);
FREE(bind);
}
FREE(bindings);
SLIST_REMOVE(&modes, mode, Mode, modes);
}
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struct Assignment *assign;
while (!TAILQ_EMPTY(&assignments)) {
assign = TAILQ_FIRST(&assignments);
if (assign->type == A_TO_WORKSPACE)
FREE(assign->dest.workspace);
else if (assign->type == A_TO_OUTPUT)
FREE(assign->dest.output);
else if (assign->type == A_COMMAND)
FREE(assign->dest.command);
match_free(&(assign->match));
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TAILQ_REMOVE(&assignments, assign, assignments);
FREE(assign);
}
/* Clear bar configs */
Barconfig *barconfig;
while (!TAILQ_EMPTY(&barconfigs)) {
barconfig = TAILQ_FIRST(&barconfigs);
FREE(barconfig->id);
for (int c = 0; c < barconfig->num_outputs; c++)
free(barconfig->outputs[c]);
FREE(barconfig->outputs);
FREE(barconfig->tray_output);
FREE(barconfig->socket_path);
FREE(barconfig->status_command);
FREE(barconfig->i3bar_command);
FREE(barconfig->font);
FREE(barconfig->colors.background);
FREE(barconfig->colors.statusline);
FREE(barconfig->colors.focused_workspace_border);
FREE(barconfig->colors.focused_workspace_bg);
FREE(barconfig->colors.focused_workspace_text);
FREE(barconfig->colors.active_workspace_border);
FREE(barconfig->colors.active_workspace_bg);
FREE(barconfig->colors.active_workspace_text);
FREE(barconfig->colors.inactive_workspace_border);
FREE(barconfig->colors.inactive_workspace_bg);
FREE(barconfig->colors.inactive_workspace_text);
FREE(barconfig->colors.urgent_workspace_border);
FREE(barconfig->colors.urgent_workspace_bg);
FREE(barconfig->colors.urgent_workspace_text);
TAILQ_REMOVE(&barconfigs, barconfig, configs);
FREE(barconfig);
}
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/* Clear workspace names */
#if 0
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Workspace *ws;
TAILQ_FOREACH(ws, workspaces, workspaces)
workspace_set_name(ws, NULL);
#endif
/* Invalidate pixmap caches in case font or colors changed */
Con *con;
TAILQ_FOREACH(con, &all_cons, all_cons)
FREE(con->deco_render_params);
/* Get rid of the current font */
free_font();
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}
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SLIST_INIT(&modes);
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struct Mode *default_mode = scalloc(sizeof(struct Mode));
default_mode->name = sstrdup("default");
default_mode->bindings = scalloc(sizeof(struct bindings_head));
TAILQ_INIT(default_mode->bindings);
SLIST_INSERT_HEAD(&modes, default_mode, modes);
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bindings = default_mode->bindings;
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#define REQUIRED_OPTION(name) \
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if (config.name == NULL) \
die("You did not specify required configuration option " #name "\n");
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/* Clear the old config or initialize the data structure */
memset(&config, 0, sizeof(config));
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/* Initialize default colors */
#define INIT_COLOR(x, cborder, cbackground, ctext, cindicator) \
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do { \
x.border = get_colorpixel(cborder); \
x.background = get_colorpixel(cbackground); \
x.text = get_colorpixel(ctext); \
x.indicator = get_colorpixel(cindicator); \
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} while (0)
config.client.background = get_colorpixel("#000000");
INIT_COLOR(config.client.focused, "#4c7899", "#285577", "#ffffff", "#2e9ef4");
INIT_COLOR(config.client.focused_inactive, "#333333", "#5f676a", "#ffffff", "#484e50");
INIT_COLOR(config.client.unfocused, "#333333", "#222222", "#888888", "#292d2e");
INIT_COLOR(config.client.urgent, "#2f343a", "#900000", "#ffffff", "#900000");
/* the last argument (indicator color) is ignored for bar colors */
INIT_COLOR(config.bar.focused, "#4c7899", "#285577", "#ffffff", "#000000");
INIT_COLOR(config.bar.unfocused, "#333333", "#222222", "#888888", "#000000");
INIT_COLOR(config.bar.urgent, "#2f343a", "#900000", "#ffffff", "#000000");
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config.default_border = BS_NORMAL;
config.default_floating_border = BS_NORMAL;
/* Set default_orientation to NO_ORIENTATION for auto orientation. */
config.default_orientation = NO_ORIENTATION;
parse_configuration(override_configpath);
if (reload) {
translate_keysyms();
grab_all_keys(conn, false);
}
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if (config.font.id == 0) {
ELOG("You did not specify required configuration option \"font\"\n");
config.font = load_font("fixed", true);
set_font(&config.font);
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}
/* Redraw the currently visible decorations on reload, so that
* the possibly new drawing parameters changed. */
if (reload) {
x_deco_recurse(croot);
xcb_flush(conn);
}
#if 0
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/* Set an empty name for every workspace which got no name */
Workspace *ws;
TAILQ_FOREACH(ws, workspaces, workspaces) {
if (ws->name != NULL) {
/* If the font was not specified when the workspace name
* was loaded, we need to predict the text width now */
if (ws->text_width == 0)
ws->text_width = predict_text_width(global_conn,
config.font, ws->name, ws->name_len);
continue;
}
workspace_set_name(ws, NULL);
}
#endif
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}