1077 lines
40 KiB
C
1077 lines
40 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* bindings.c: Functions for configuring, finding and, running bindings.
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*/
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#include "all.h"
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#include "guile.h"
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#include <math.h>
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#include <xkbcommon/xkbcommon-x11.h>
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#include <xkbcommon/xkbcommon.h>
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static struct xkb_context *xkb_context;
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static struct xkb_keymap *xkb_keymap;
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pid_t command_error_nagbar_pid = -1;
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/*
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* The name of the default mode.
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*
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*/
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const char *DEFAULT_BINDING_MODE = "default";
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/*
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* Returns the mode specified by `name` or creates a new mode and adds it to
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* the list of modes.
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*
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*/
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static struct Mode *mode_from_name(const char *name, bool pango_markup) {
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struct Mode *mode;
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/* Try to find the mode in the list of modes and return it */
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SLIST_FOREACH (mode, &modes, modes) {
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if (strcmp(mode->name, name) == 0) {
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return mode;
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}
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}
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/* If the mode was not found, create a new one */
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mode = scalloc(1, sizeof(struct Mode));
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mode->name = sstrdup(name);
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mode->pango_markup = pango_markup;
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mode->bindings = scalloc(1, sizeof(struct bindings_head));
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TAILQ_INIT(mode->bindings);
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SLIST_INSERT_HEAD(&modes, mode, modes);
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return mode;
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}
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/*
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* Adds a binding from config parameters given as strings and returns a
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* pointer to the binding structure. Returns NULL if the input code could not
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* be parsed.
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*
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*/
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Binding *configure_binding(const char *bindtype, const char *modifiers, const char *input_code,
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const char *release, const char *border, const char *whole_window,
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const char *exclude_titlebar, SCM command, const char *modename,
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bool pango_markup) {
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Binding *new_binding = scalloc(1, sizeof(Binding));
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DLOG("Binding %p bindtype %s, modifiers %s, input code %s, release %s\n", new_binding, bindtype, modifiers, input_code, release);
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new_binding->release = (release != NULL ? B_UPON_KEYRELEASE : B_UPON_KEYPRESS);
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new_binding->border = (border != NULL);
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new_binding->whole_window = (whole_window != NULL);
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new_binding->exclude_titlebar = (exclude_titlebar != NULL);
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if (strcmp(bindtype, "bindsym") == 0) {
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new_binding->input_type = (strncasecmp(input_code, "button", (sizeof("button") - 1)) == 0
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? B_MOUSE
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: B_KEYBOARD);
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new_binding->symbol = sstrdup(input_code);
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} else {
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long keycode;
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if (!parse_long(input_code, &keycode, 10)) {
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ELOG("Could not parse \"%s\" as an input code, ignoring this binding.\n", input_code);
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FREE(new_binding);
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return NULL;
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}
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new_binding->keycode = keycode;
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new_binding->input_type = B_KEYBOARD;
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}
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// FIXME: !!!Unprotect!!!!
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scm_gc_protect_object(command);
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new_binding->command = command;
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new_binding->event_state_mask = event_state_from_str(modifiers);
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int group_bits_set = 0;
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if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_1)
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group_bits_set++;
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if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
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group_bits_set++;
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if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
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group_bits_set++;
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if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
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group_bits_set++;
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if (group_bits_set > 1)
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ELOG("Keybinding has more than one Group specified, but your X server is always in precisely one group. The keybinding can never trigger.\n");
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struct Mode *mode = mode_from_name(modename, pango_markup);
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TAILQ_INSERT_TAIL(mode->bindings, new_binding, bindings);
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TAILQ_INIT(&(new_binding->keycodes_head));
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return new_binding;
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}
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static bool binding_in_current_group(const Binding *bind) {
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/* If no bits are set, the binding should be installed in every group. */
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if ((bind->event_state_mask >> 16) == I3_XKB_GROUP_MASK_ANY)
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return true;
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switch (xkb_current_group) {
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case XCB_XKB_GROUP_1:
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return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_1);
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case XCB_XKB_GROUP_2:
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return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2);
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case XCB_XKB_GROUP_3:
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return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3);
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case XCB_XKB_GROUP_4:
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return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4);
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default:
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ELOG("BUG: xkb_current_group (= %d) outside of [XCB_XKB_GROUP_1..XCB_XKB_GROUP_4]\n", xkb_current_group);
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return false;
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}
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}
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static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
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printf("OK\n");
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/* Grab the key in all combinations */
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#define GRAB_KEY(modifier) \
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do { \
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xcb_grab_key(conn, 0, root, modifier, keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC); \
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printf("Register key: %d, modifier: %d\n", keycode, modifier); \
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} while (0)
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const int mods = (bind->event_state_mask & 0xFFFF);
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DLOG("Binding %p Grabbing keycode %d with event state mask 0x%x (mods 0x%x)\n",
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bind, keycode, bind->event_state_mask, mods);
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GRAB_KEY(mods);
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/* Also bind the key with active NumLock */
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GRAB_KEY(mods | xcb_numlock_mask);
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/* Also bind the key with active CapsLock */
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GRAB_KEY(mods | XCB_MOD_MASK_LOCK);
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/* Also bind the key with active NumLock+CapsLock */
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GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
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}
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// THIS IS JUST A PROOF OF CONCEPT. IT'S TERRIBLE AND SLOW
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void get_keycode(struct xkb_keymap *keymap, xkb_keycode_t key, char *data) {
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xkb_keysym_t sym = xkb_state_key_get_one_sym(xkb_state_new(xkb_keymap), key);
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if (data[0] == sym) {
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data[0] = key;
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return;
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}
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}
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// THIS IS JUST A PROOF OF CONCEPT. IT'S TERRIBLE AND SLOW
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SCM guile_register_keyboard_key(SCM g_name, SCM modifier) {
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xkb_keysym_t sym = XStringToKeysym(scm_to_utf8_string(g_name));
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/* /\* load_keymap(); *\/ */
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/* char data[8]; */
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/* data[0] = sym; */
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/* xkb_keymap_key_for_each(xkb_keymap, get_keycode, &data); */
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/* xcb_keycode_t keycode = data[0]; */
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/* printf("Register key: %s, code: %d, sym: %d, modifier: %d\n", */
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/* scm_to_utf8_string(g_name), keycode, sym, scm_to_int(modifier)); */
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xcb_grab_key(conn, 0, root, scm_to_int(modifier),
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// FIXME: THIS IS WRONG,
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XCB_GRAB_ANY,
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/* keycode, */
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
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/* const int mods = (bind->event_state_mask & 0xFFFF); */
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/* DLOG("Binding %p Grabbing keycode %d with event state mask 0x%x (mods 0x%x)\n", */
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/* bind, keycode, bind->event_state_mask, mods); */
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/* GRAB_KEY(mods); */
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/* /\* Also bind the key with active NumLock *\/ */
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/* GRAB_KEY(mods | xcb_numlock_mask); */
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/* /\* Also bind the key with active CapsLock *\/ */
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/* GRAB_KEY(mods | XCB_MOD_MASK_LOCK); */
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/* /\* Also bind the key with active NumLock+CapsLock *\/ */
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/* GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK); */
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return SCM_BOOL_T;
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}
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/*
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* Grab the bound keys (tell X to send us keypress events for those keycodes)
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*
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*/
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void grab_all_keys(xcb_connection_t *conn) {
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Binding *bind;
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TAILQ_FOREACH (bind, bindings, bindings) {
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if (bind->input_type != B_KEYBOARD)
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continue;
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if (!binding_in_current_group(bind))
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continue;
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/* The easy case: the user specified a keycode directly. */
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if (bind->keycode > 0) {
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grab_keycode_for_binding(conn, bind, bind->keycode);
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continue;
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}
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struct Binding_Keycode *binding_keycode;
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TAILQ_FOREACH (binding_keycode, &(bind->keycodes_head), keycodes) {
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const int keycode = binding_keycode->keycode;
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const int mods = (binding_keycode->modifiers & 0xFFFF);
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printf("Binding %p Grabbing keycode %d with mods %d\n", bind, keycode, mods);
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xcb_grab_key(conn, 0, root, mods, keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
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}
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}
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}
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/*
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* Release the button grabs on all managed windows and regrab them,
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* reevaluating which buttons need to be grabbed.
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*
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*/
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void regrab_all_buttons(xcb_connection_t *conn) {
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int *buttons = bindings_get_buttons_to_grab();
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xcb_grab_server(conn);
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Con *con;
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TAILQ_FOREACH (con, &all_cons, all_cons) {
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if (con->window == NULL)
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continue;
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xcb_ungrab_button(conn, XCB_BUTTON_INDEX_ANY, con->window->id, XCB_BUTTON_MASK_ANY);
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xcb_grab_buttons(conn, con->window->id, buttons);
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}
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FREE(buttons);
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xcb_ungrab_server(conn);
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}
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/*
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* Returns a pointer to the Binding with the specified modifiers and
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* keycode or NULL if no such binding exists.
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*
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*/
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static Binding *get_binding(i3_event_state_mask_t state_filtered, bool is_release, uint16_t input_code, input_type_t input_type) {
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Binding *bind;
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Binding *result = NULL;
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if (!is_release) {
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/* On a press event, we first reset all B_UPON_KEYRELEASE_IGNORE_MODS
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* bindings back to B_UPON_KEYRELEASE */
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TAILQ_FOREACH (bind, bindings, bindings) {
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if (bind->input_type != input_type)
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continue;
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if (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS)
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bind->release = B_UPON_KEYRELEASE;
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}
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}
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const uint32_t xkb_group_state = (state_filtered & 0xFFFF0000);
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const uint32_t modifiers_state = (state_filtered & 0x0000FFFF);
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TAILQ_FOREACH (bind, bindings, bindings) {
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if (bind->input_type != input_type) {
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continue;
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}
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const uint32_t xkb_group_mask = (bind->event_state_mask & 0xFFFF0000);
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const bool groups_match = ((xkb_group_state & xkb_group_mask) == xkb_group_mask);
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if (!groups_match) {
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DLOG("skipping binding %p because XKB groups do not match\n", bind);
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continue;
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}
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/* For keyboard bindings where a symbol was specified by the user, we
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* need to look in the array of translated keycodes for the event’s
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* keycode */
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bool found_keycode = false;
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if (input_type == B_KEYBOARD && bind->symbol != NULL) {
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xcb_keycode_t input_keycode = (xcb_keycode_t)input_code;
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struct Binding_Keycode *binding_keycode;
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TAILQ_FOREACH (binding_keycode, &(bind->keycodes_head), keycodes) {
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const uint32_t modifiers_mask = (binding_keycode->modifiers & 0x0000FFFF);
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const bool mods_match = (modifiers_mask == modifiers_state);
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DLOG("binding_keycode->modifiers = %d, modifiers_mask = %d, modifiers_state = %d, mods_match = %s\n",
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binding_keycode->modifiers, modifiers_mask, modifiers_state, (mods_match ? "yes" : "no"));
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if (binding_keycode->keycode == input_keycode &&
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(mods_match || (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS && is_release))) {
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found_keycode = true;
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break;
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}
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}
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} else {
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/* This case is easier: The user specified a keycode */
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if (bind->keycode != input_code) {
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continue;
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}
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struct Binding_Keycode *binding_keycode;
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TAILQ_FOREACH (binding_keycode, &(bind->keycodes_head), keycodes) {
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const uint32_t modifiers_mask = (binding_keycode->modifiers & 0x0000FFFF);
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const bool mods_match = (modifiers_mask == modifiers_state);
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DLOG("binding_keycode->modifiers = %d, modifiers_mask = %d, modifiers_state = %d, mods_match = %s\n",
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binding_keycode->modifiers, modifiers_mask, modifiers_state, (mods_match ? "yes" : "no"));
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if (mods_match || (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS && is_release)) {
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found_keycode = true;
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break;
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}
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}
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}
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if (!found_keycode) {
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continue;
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}
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/* If this binding is a release binding, it matches the key which the
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* user pressed. We therefore mark it as B_UPON_KEYRELEASE_IGNORE_MODS
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* for later, so that the user can release the modifiers before the
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* actual key or button and the release event will still be matched. */
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if (bind->release == B_UPON_KEYRELEASE && !is_release) {
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bind->release = B_UPON_KEYRELEASE_IGNORE_MODS;
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DLOG("marked bind %p as B_UPON_KEYRELEASE_IGNORE_MODS\n", bind);
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if (result) {
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break;
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}
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continue;
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}
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/* Check if the binding is for a press or a release event */
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if ((bind->release == B_UPON_KEYPRESS && is_release)) {
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continue;
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}
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if (is_release) {
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return bind;
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} else if (!result) {
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/* Continue looping to mark needed B_UPON_KEYRELEASE_IGNORE_MODS. */
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result = bind;
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}
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}
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return result;
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}
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/*
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* Returns a pointer to the Binding that matches the given xcb button or key
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* event or NULL if no such binding exists.
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*
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*/
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Binding *get_binding_from_xcb_event(xcb_generic_event_t *event) {
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const bool is_release = (event->response_type == XCB_KEY_RELEASE ||
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event->response_type == XCB_BUTTON_RELEASE);
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const input_type_t input_type = ((event->response_type == XCB_BUTTON_RELEASE ||
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event->response_type == XCB_BUTTON_PRESS)
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? B_MOUSE
|
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: B_KEYBOARD);
|
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|
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const uint16_t event_state = ((xcb_key_press_event_t *)event)->state;
|
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const uint16_t event_detail = ((xcb_key_press_event_t *)event)->detail;
|
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|
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/* Remove the CapsLock bit */
|
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i3_event_state_mask_t state_filtered = event_state & ~XCB_MOD_MASK_LOCK;
|
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DLOG("(removed capslock, state = 0x%x)\n", state_filtered);
|
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/* Transform the keyboard_group from bit 13 and bit 14 into an
|
||
* i3_xkb_group_mask_t, so that get_binding() can just bitwise AND the
|
||
* configured bindings against |state_filtered|.
|
||
*
|
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* These bits are only set because we set the XKB client flags
|
||
* XCB_XKB_PER_CLIENT_FLAG_GRABS_USE_XKB_STATE and
|
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* XCB_XKB_PER_CLIENT_FLAG_LOOKUP_STATE_WHEN_GRABBED. See also doc/kbproto
|
||
* section 2.2.2:
|
||
* https://www.x.org/releases/X11R7.7/doc/kbproto/xkbproto.html#Computing_A_State_Field_from_an_XKB_State */
|
||
switch ((event_state & 0x6000) >> 13) {
|
||
case XCB_XKB_GROUP_1:
|
||
state_filtered |= (I3_XKB_GROUP_MASK_1 << 16);
|
||
break;
|
||
case XCB_XKB_GROUP_2:
|
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state_filtered |= (I3_XKB_GROUP_MASK_2 << 16);
|
||
break;
|
||
case XCB_XKB_GROUP_3:
|
||
state_filtered |= (I3_XKB_GROUP_MASK_3 << 16);
|
||
break;
|
||
case XCB_XKB_GROUP_4:
|
||
state_filtered |= (I3_XKB_GROUP_MASK_4 << 16);
|
||
break;
|
||
}
|
||
state_filtered &= ~0x6000;
|
||
DLOG("(transformed keyboard group, state = 0x%x)\n", state_filtered);
|
||
return get_binding(state_filtered, is_release, event_detail, input_type);
|
||
}
|
||
|
||
struct resolve {
|
||
/* The binding which we are resolving. */
|
||
Binding *bind;
|
||
|
||
/* |bind|’s keysym (translated to xkb_keysym_t), e.g. XKB_KEY_R. */
|
||
xkb_keysym_t keysym;
|
||
|
||
/* The xkb state built from the user-provided modifiers and group. */
|
||
struct xkb_state *xkb_state;
|
||
|
||
/* Like |xkb_state|, just without the shift modifier, if shift was specified. */
|
||
struct xkb_state *xkb_state_no_shift;
|
||
|
||
/* Like |xkb_state|, but with NumLock. */
|
||
struct xkb_state *xkb_state_numlock;
|
||
|
||
/* Like |xkb_state|, but with NumLock, just without the shift modifier, if shift was specified. */
|
||
struct xkb_state *xkb_state_numlock_no_shift;
|
||
};
|
||
|
||
#define ADD_TRANSLATED_KEY(code, mods) \
|
||
do { \
|
||
struct Binding_Keycode *binding_keycode = smalloc(sizeof(struct Binding_Keycode)); \
|
||
binding_keycode->modifiers = (mods); \
|
||
binding_keycode->keycode = (code); \
|
||
TAILQ_INSERT_TAIL(&(bind->keycodes_head), binding_keycode, keycodes); \
|
||
} while (0)
|
||
|
||
/*
|
||
* add_keycode_if_matches is called for each keycode in the keymap and will add
|
||
* the keycode to |data->bind| if the keycode can result in the keysym
|
||
* |data->resolving|.
|
||
*
|
||
*/
|
||
static void add_keycode_if_matches(struct xkb_keymap *keymap, xkb_keycode_t key, void *data) {
|
||
const struct resolve *resolving = data;
|
||
struct xkb_state *numlock_state = resolving->xkb_state_numlock;
|
||
xkb_keysym_t sym = xkb_state_key_get_one_sym(resolving->xkb_state, key);
|
||
if (sym != resolving->keysym) {
|
||
/* Check if Shift was specified, and try resolving the symbol without
|
||
* shift, so that “bindsym $mod+Shift+a nop” actually works. */
|
||
const xkb_layout_index_t layout = xkb_state_key_get_layout(resolving->xkb_state, key);
|
||
if (layout == XKB_LAYOUT_INVALID)
|
||
return;
|
||
if (xkb_state_key_get_level(resolving->xkb_state, key, layout) > 1)
|
||
return;
|
||
/* Skip the Shift fallback for keypad keys, otherwise one cannot bind
|
||
* KP_1 independent of KP_End. */
|
||
if (sym >= XKB_KEY_KP_Space && sym <= XKB_KEY_KP_Equal)
|
||
return;
|
||
numlock_state = resolving->xkb_state_numlock_no_shift;
|
||
sym = xkb_state_key_get_one_sym(resolving->xkb_state_no_shift, key);
|
||
if (sym != resolving->keysym)
|
||
return;
|
||
}
|
||
Binding *bind = resolving->bind;
|
||
|
||
ADD_TRANSLATED_KEY(key, bind->event_state_mask);
|
||
|
||
/* Also bind the key with active CapsLock */
|
||
ADD_TRANSLATED_KEY(key, bind->event_state_mask | XCB_MOD_MASK_LOCK);
|
||
|
||
/* If this binding is not explicitly for NumLock, check whether we need to
|
||
* add a fallback. */
|
||
if ((bind->event_state_mask & xcb_numlock_mask) != xcb_numlock_mask) {
|
||
/* Check whether the keycode results in the same keysym when NumLock is
|
||
* active. If so, grab the key with NumLock as well, so that users don’t
|
||
* need to duplicate every key binding with an additional Mod2 specified.
|
||
*/
|
||
xkb_keysym_t sym_numlock = xkb_state_key_get_one_sym(numlock_state, key);
|
||
if (sym_numlock == resolving->keysym) {
|
||
/* Also bind the key with active NumLock */
|
||
ADD_TRANSLATED_KEY(key, bind->event_state_mask | xcb_numlock_mask);
|
||
|
||
/* Also bind the key with active NumLock+CapsLock */
|
||
ADD_TRANSLATED_KEY(key, bind->event_state_mask | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
|
||
} else {
|
||
DLOG("Skipping automatic numlock fallback, key %d resolves to 0x%x with numlock\n",
|
||
key, sym_numlock);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Translates keysymbols to keycodes for all bindings which use keysyms.
|
||
*
|
||
*/
|
||
void translate_keysyms(void) {
|
||
struct xkb_state *dummy_state = NULL;
|
||
struct xkb_state *dummy_state_no_shift = NULL;
|
||
struct xkb_state *dummy_state_numlock = NULL;
|
||
struct xkb_state *dummy_state_numlock_no_shift = NULL;
|
||
bool has_errors = false;
|
||
|
||
if ((dummy_state = xkb_state_new(xkb_keymap)) == NULL ||
|
||
(dummy_state_no_shift = xkb_state_new(xkb_keymap)) == NULL ||
|
||
(dummy_state_numlock = xkb_state_new(xkb_keymap)) == NULL ||
|
||
(dummy_state_numlock_no_shift = xkb_state_new(xkb_keymap)) == NULL) {
|
||
ELOG("Could not create XKB state, cannot translate keysyms.\n");
|
||
goto out;
|
||
}
|
||
|
||
Binding *bind;
|
||
TAILQ_FOREACH (bind, bindings, bindings) {
|
||
if (bind->input_type == B_MOUSE) {
|
||
long button;
|
||
if (!parse_long(bind->symbol + (sizeof("button") - 1), &button, 10)) {
|
||
ELOG("Could not translate string to button: \"%s\"\n", bind->symbol);
|
||
}
|
||
|
||
xcb_keycode_t key = button;
|
||
bind->keycode = key;
|
||
DLOG("Binding Mouse button, Keycode = %d\n", key);
|
||
}
|
||
|
||
xkb_layout_index_t group = XCB_XKB_GROUP_1;
|
||
if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
|
||
group = XCB_XKB_GROUP_2;
|
||
else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
|
||
group = XCB_XKB_GROUP_3;
|
||
else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
|
||
group = XCB_XKB_GROUP_4;
|
||
|
||
DLOG("Binding %p group = %d, event_state_mask = %d, &2 = %s, &3 = %s, &4 = %s\n",
|
||
bind,
|
||
group,
|
||
bind->event_state_mask,
|
||
(bind->event_state_mask & I3_XKB_GROUP_MASK_2) ? "yes" : "no",
|
||
(bind->event_state_mask & I3_XKB_GROUP_MASK_3) ? "yes" : "no",
|
||
(bind->event_state_mask & I3_XKB_GROUP_MASK_4) ? "yes" : "no");
|
||
(void)xkb_state_update_mask(
|
||
dummy_state,
|
||
(bind->event_state_mask & 0x1FFF) /* xkb_mod_mask_t base_mods, */,
|
||
0 /* xkb_mod_mask_t latched_mods, */,
|
||
0 /* xkb_mod_mask_t locked_mods, */,
|
||
0 /* xkb_layout_index_t base_group, */,
|
||
0 /* xkb_layout_index_t latched_group, */,
|
||
group /* xkb_layout_index_t locked_group, */);
|
||
|
||
(void)xkb_state_update_mask(
|
||
dummy_state_no_shift,
|
||
(bind->event_state_mask & 0x1FFF) ^ XCB_KEY_BUT_MASK_SHIFT /* xkb_mod_mask_t base_mods, */,
|
||
0 /* xkb_mod_mask_t latched_mods, */,
|
||
0 /* xkb_mod_mask_t locked_mods, */,
|
||
0 /* xkb_layout_index_t base_group, */,
|
||
0 /* xkb_layout_index_t latched_group, */,
|
||
group /* xkb_layout_index_t locked_group, */);
|
||
|
||
(void)xkb_state_update_mask(
|
||
dummy_state_numlock,
|
||
(bind->event_state_mask & 0x1FFF) | xcb_numlock_mask /* xkb_mod_mask_t base_mods, */,
|
||
0 /* xkb_mod_mask_t latched_mods, */,
|
||
0 /* xkb_mod_mask_t locked_mods, */,
|
||
0 /* xkb_layout_index_t base_group, */,
|
||
0 /* xkb_layout_index_t latched_group, */,
|
||
group /* xkb_layout_index_t locked_group, */);
|
||
|
||
(void)xkb_state_update_mask(
|
||
dummy_state_numlock_no_shift,
|
||
((bind->event_state_mask & 0x1FFF) | xcb_numlock_mask) ^ XCB_KEY_BUT_MASK_SHIFT /* xkb_mod_mask_t base_mods, */,
|
||
0 /* xkb_mod_mask_t latched_mods, */,
|
||
0 /* xkb_mod_mask_t locked_mods, */,
|
||
0 /* xkb_layout_index_t base_group, */,
|
||
0 /* xkb_layout_index_t latched_group, */,
|
||
group /* xkb_layout_index_t locked_group, */);
|
||
|
||
if (bind->keycode > 0) {
|
||
/* We need to specify modifiers for the keycode binding (numlock
|
||
* fallback). */
|
||
while (!TAILQ_EMPTY(&(bind->keycodes_head))) {
|
||
struct Binding_Keycode *first = TAILQ_FIRST(&(bind->keycodes_head));
|
||
TAILQ_REMOVE(&(bind->keycodes_head), first, keycodes);
|
||
FREE(first);
|
||
}
|
||
|
||
ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask);
|
||
|
||
/* Also bind the key with active CapsLock */
|
||
ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask | XCB_MOD_MASK_LOCK);
|
||
|
||
/* If this binding is not explicitly for NumLock, check whether we need to
|
||
* add a fallback. */
|
||
if ((bind->event_state_mask & xcb_numlock_mask) != xcb_numlock_mask) {
|
||
/* Check whether the keycode results in the same keysym when NumLock is
|
||
* active. If so, grab the key with NumLock as well, so that users don’t
|
||
* need to duplicate every key binding with an additional Mod2 specified.
|
||
*/
|
||
xkb_keysym_t sym = xkb_state_key_get_one_sym(dummy_state, bind->keycode);
|
||
xkb_keysym_t sym_numlock = xkb_state_key_get_one_sym(dummy_state_numlock, bind->keycode);
|
||
if (sym == sym_numlock) {
|
||
/* Also bind the key with active NumLock */
|
||
ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask | xcb_numlock_mask);
|
||
|
||
/* Also bind the key with active NumLock+CapsLock */
|
||
ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
|
||
} else {
|
||
DLOG("Skipping automatic numlock fallback, key %d resolves to 0x%x with numlock\n",
|
||
bind->keycode, sym_numlock);
|
||
}
|
||
}
|
||
|
||
continue;
|
||
}
|
||
|
||
/* We need to translate the symbol to a keycode */
|
||
const xkb_keysym_t keysym = xkb_keysym_from_name(bind->symbol, XKB_KEYSYM_NO_FLAGS);
|
||
if (keysym == XKB_KEY_NoSymbol) {
|
||
ELOG("Could not translate string to key symbol: \"%s\"\n",
|
||
bind->symbol);
|
||
continue;
|
||
}
|
||
|
||
struct resolve resolving = {
|
||
.bind = bind,
|
||
.keysym = keysym,
|
||
.xkb_state = dummy_state,
|
||
.xkb_state_no_shift = dummy_state_no_shift,
|
||
.xkb_state_numlock = dummy_state_numlock,
|
||
.xkb_state_numlock_no_shift = dummy_state_numlock_no_shift,
|
||
};
|
||
while (!TAILQ_EMPTY(&(bind->keycodes_head))) {
|
||
struct Binding_Keycode *first = TAILQ_FIRST(&(bind->keycodes_head));
|
||
TAILQ_REMOVE(&(bind->keycodes_head), first, keycodes);
|
||
FREE(first);
|
||
}
|
||
xkb_keymap_key_for_each(xkb_keymap, add_keycode_if_matches, &resolving);
|
||
char *keycodes = sstrdup("");
|
||
int num_keycodes = 0;
|
||
struct Binding_Keycode *binding_keycode;
|
||
TAILQ_FOREACH (binding_keycode, &(bind->keycodes_head), keycodes) {
|
||
char *tmp;
|
||
sasprintf(&tmp, "%s %d", keycodes, binding_keycode->keycode);
|
||
free(keycodes);
|
||
keycodes = tmp;
|
||
num_keycodes++;
|
||
|
||
/* check for duplicate bindings */
|
||
Binding *check;
|
||
TAILQ_FOREACH (check, bindings, bindings) {
|
||
if (check == bind)
|
||
continue;
|
||
if (check->symbol != NULL)
|
||
continue;
|
||
if (check->keycode != binding_keycode->keycode ||
|
||
check->event_state_mask != binding_keycode->modifiers ||
|
||
check->release != bind->release)
|
||
continue;
|
||
has_errors = true;
|
||
ELOG("Duplicate keybinding in config file:\n keysym = %s, keycode = %d, state_mask = 0x%x\n", bind->symbol, check->keycode, bind->event_state_mask);
|
||
}
|
||
}
|
||
DLOG("state=0x%x, cfg=\"%s\", sym=0x%x → keycodes%s (%d)\n",
|
||
bind->event_state_mask, bind->symbol, keysym, keycodes, num_keycodes);
|
||
free(keycodes);
|
||
}
|
||
|
||
out:
|
||
xkb_state_unref(dummy_state);
|
||
xkb_state_unref(dummy_state_no_shift);
|
||
xkb_state_unref(dummy_state_numlock);
|
||
xkb_state_unref(dummy_state_numlock_no_shift);
|
||
|
||
if (has_errors) {
|
||
start_config_error_nagbar(current_configpath, true);
|
||
}
|
||
}
|
||
|
||
#undef ADD_TRANSLATED_KEY
|
||
|
||
/*
|
||
* Switches the key bindings to the given mode, if the mode exists
|
||
*
|
||
*/
|
||
void switch_mode(const char *new_mode) {
|
||
struct Mode *mode;
|
||
|
||
DLOG("Switching to mode %s\n", new_mode);
|
||
|
||
SLIST_FOREACH (mode, &modes, modes) {
|
||
if (strcmp(mode->name, new_mode) != 0)
|
||
continue;
|
||
|
||
ungrab_all_keys(conn);
|
||
bindings = mode->bindings;
|
||
translate_keysyms();
|
||
grab_all_keys(conn);
|
||
|
||
/* Reset all B_UPON_KEYRELEASE_IGNORE_MODS bindings to avoid possibly
|
||
* activating one of them. */
|
||
Binding *bind;
|
||
TAILQ_FOREACH (bind, bindings, bindings) {
|
||
if (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS)
|
||
bind->release = B_UPON_KEYRELEASE;
|
||
}
|
||
|
||
char *event_msg;
|
||
sasprintf(&event_msg, "{\"change\":\"%s\", \"pango_markup\":%s}",
|
||
mode->name, (mode->pango_markup ? "true" : "false"));
|
||
|
||
ipc_send_event("mode", I3_IPC_EVENT_MODE, event_msg);
|
||
FREE(event_msg);
|
||
|
||
return;
|
||
}
|
||
|
||
ELOG("Mode not found\n");
|
||
}
|
||
|
||
static int reorder_binding_cmp(const void *a, const void *b) {
|
||
Binding *first = *((Binding **)a);
|
||
Binding *second = *((Binding **)b);
|
||
if (first->event_state_mask < second->event_state_mask) {
|
||
return 1;
|
||
} else if (first->event_state_mask == second->event_state_mask) {
|
||
return 0;
|
||
} else {
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
static void reorder_bindings_of_mode(struct Mode *mode) {
|
||
/* Copy the bindings into an array, so that we can use qsort(3). */
|
||
int n = 0;
|
||
Binding *current;
|
||
TAILQ_FOREACH (current, mode->bindings, bindings) {
|
||
n++;
|
||
}
|
||
Binding **tmp = scalloc(n, sizeof(Binding *));
|
||
n = 0;
|
||
TAILQ_FOREACH (current, mode->bindings, bindings) {
|
||
tmp[n++] = current;
|
||
}
|
||
|
||
qsort(tmp, n, sizeof(Binding *), reorder_binding_cmp);
|
||
|
||
struct bindings_head *reordered = scalloc(1, sizeof(struct bindings_head));
|
||
TAILQ_INIT(reordered);
|
||
for (int i = 0; i < n; i++) {
|
||
current = tmp[i];
|
||
TAILQ_REMOVE(mode->bindings, current, bindings);
|
||
TAILQ_INSERT_TAIL(reordered, current, bindings);
|
||
}
|
||
free(tmp);
|
||
assert(TAILQ_EMPTY(mode->bindings));
|
||
/* Free the old bindings_head, which is now empty. */
|
||
free(mode->bindings);
|
||
mode->bindings = reordered;
|
||
}
|
||
|
||
/*
|
||
* Reorders bindings by event_state_mask descendingly so that get_binding()
|
||
* correctly matches more specific bindings before more generic bindings. Take
|
||
* the following binding configuration as an example:
|
||
*
|
||
* bindsym n nop lower-case n pressed
|
||
* bindsym Shift+n nop upper-case n pressed
|
||
*
|
||
* Without reordering, the first binding’s event_state_mask of 0x0 would match
|
||
* the actual event_stat_mask of 0x1 and hence trigger instead of the second
|
||
* keybinding.
|
||
*
|
||
*/
|
||
void reorder_bindings(void) {
|
||
struct Mode *mode;
|
||
SLIST_FOREACH (mode, &modes, modes) {
|
||
const bool current_mode = (mode->bindings == bindings);
|
||
reorder_bindings_of_mode(mode);
|
||
if (current_mode)
|
||
bindings = mode->bindings;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Checks for duplicate key bindings (the same keycode or keysym is configured
|
||
* more than once). If a duplicate binding is found, a message is printed to
|
||
* stderr and the has_errors variable is set to true, which will start
|
||
* i3-nagbar.
|
||
*
|
||
*/
|
||
void check_for_duplicate_bindings(struct context *context) {
|
||
Binding *bind, *current;
|
||
TAILQ_FOREACH (current, bindings, bindings) {
|
||
TAILQ_FOREACH (bind, bindings, bindings) {
|
||
/* Abort when we reach the current keybinding, only check the
|
||
* bindings before */
|
||
if (bind == current)
|
||
break;
|
||
|
||
/* Check if the input types are different */
|
||
if (bind->input_type != current->input_type)
|
||
continue;
|
||
|
||
/* Check if one is using keysym while the other is using bindsym.
|
||
* If so, skip. */
|
||
if ((bind->symbol == NULL && current->symbol != NULL) ||
|
||
(bind->symbol != NULL && current->symbol == NULL))
|
||
continue;
|
||
|
||
/* If bind is NULL, current has to be NULL, too (see above).
|
||
* If the keycodes differ, it can't be a duplicate. */
|
||
if (bind->symbol != NULL &&
|
||
strcasecmp(bind->symbol, current->symbol) != 0)
|
||
continue;
|
||
|
||
/* Check if the keycodes or modifiers are different. If so, they
|
||
* can't be duplicate */
|
||
if (bind->keycode != current->keycode ||
|
||
bind->event_state_mask != current->event_state_mask ||
|
||
bind->release != current->release)
|
||
continue;
|
||
|
||
context->has_errors = true;
|
||
if (current->keycode != 0) {
|
||
ELOG("Duplicate keybinding in config file:\n state mask 0x%x with keycode %d, command \"%s\"\n",
|
||
current->event_state_mask, current->keycode, current->command);
|
||
} else {
|
||
ELOG("Duplicate keybinding in config file:\n state mask 0x%x with keysym %s, command \"%s\"\n",
|
||
current->event_state_mask, current->symbol, current->command);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Creates a dynamically allocated copy of bind.
|
||
*/
|
||
static Binding *binding_copy(Binding *bind) {
|
||
Binding *ret = smalloc(sizeof(Binding));
|
||
*ret = *bind;
|
||
if (bind->symbol != NULL)
|
||
ret->symbol = sstrdup(bind->symbol);
|
||
if (bind->command != NULL)
|
||
ret->command = sstrdup(bind->command);
|
||
TAILQ_INIT(&(ret->keycodes_head));
|
||
struct Binding_Keycode *binding_keycode;
|
||
TAILQ_FOREACH (binding_keycode, &(bind->keycodes_head), keycodes) {
|
||
struct Binding_Keycode *ret_binding_keycode = smalloc(sizeof(struct Binding_Keycode));
|
||
*ret_binding_keycode = *binding_keycode;
|
||
TAILQ_INSERT_TAIL(&(ret->keycodes_head), ret_binding_keycode, keycodes);
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
* Frees the binding. If bind is null, it simply returns.
|
||
*/
|
||
void binding_free(Binding *bind) {
|
||
if (bind == NULL) {
|
||
return;
|
||
}
|
||
|
||
while (!TAILQ_EMPTY(&(bind->keycodes_head))) {
|
||
struct Binding_Keycode *first = TAILQ_FIRST(&(bind->keycodes_head));
|
||
TAILQ_REMOVE(&(bind->keycodes_head), first, keycodes);
|
||
FREE(first);
|
||
}
|
||
|
||
FREE(bind->symbol);
|
||
FREE(bind->command);
|
||
FREE(bind);
|
||
}
|
||
|
||
/*
|
||
* Runs the given binding and handles parse errors. If con is passed, it will
|
||
* execute the command binding with that container selected by criteria.
|
||
* Returns a CommandResult for running the binding's command. Free with
|
||
* command_result_free().
|
||
*
|
||
*/
|
||
CommandResult *run_binding(Binding *bind, Con *con) {
|
||
if (scm_procedure_p(bind->command)) {
|
||
scm_call_0(bind->command);
|
||
}
|
||
return NULL;
|
||
char *command;
|
||
|
||
/* We need to copy the binding and command since “reload” may be part of
|
||
* the command, and then the memory that bind points to may not contain the
|
||
* same data anymore. */
|
||
if (con == NULL)
|
||
command = sstrdup(bind->command);
|
||
else
|
||
sasprintf(&command, "[con_id=\"%p\"] %s", con, bind->command);
|
||
|
||
Binding *bind_cp = binding_copy(bind);
|
||
CommandResult *result = parse_command(command, NULL, NULL);
|
||
free(command);
|
||
|
||
if (result->needs_tree_render)
|
||
tree_render();
|
||
|
||
if (result->parse_error) {
|
||
char *pageraction;
|
||
sasprintf(&pageraction, "i3-sensible-pager \"%s\"\n", errorfilename);
|
||
char *argv[] = {
|
||
NULL, /* will be replaced by the executable path */
|
||
"-f",
|
||
config.font.pattern,
|
||
"-t",
|
||
"error",
|
||
"-m",
|
||
"The configured command for this shortcut could not be run successfully.",
|
||
"-b",
|
||
"show errors",
|
||
pageraction,
|
||
NULL};
|
||
start_nagbar(&command_error_nagbar_pid, argv);
|
||
free(pageraction);
|
||
}
|
||
|
||
ipc_send_binding_event("run", bind_cp);
|
||
binding_free(bind_cp);
|
||
|
||
return result;
|
||
}
|
||
|
||
static int fill_rmlvo_from_root(struct xkb_rule_names *xkb_names) {
|
||
xcb_intern_atom_reply_t *atom_reply;
|
||
size_t content_max_words = 256;
|
||
|
||
atom_reply = xcb_intern_atom_reply(
|
||
conn, xcb_intern_atom(conn, 0, strlen("_XKB_RULES_NAMES"), "_XKB_RULES_NAMES"), NULL);
|
||
if (atom_reply == NULL)
|
||
return -1;
|
||
|
||
xcb_get_property_cookie_t prop_cookie;
|
||
xcb_get_property_reply_t *prop_reply;
|
||
prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
|
||
XCB_GET_PROPERTY_TYPE_ANY, 0, content_max_words);
|
||
prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
|
||
if (prop_reply == NULL) {
|
||
free(atom_reply);
|
||
return -1;
|
||
}
|
||
if (xcb_get_property_value_length(prop_reply) > 0 && prop_reply->bytes_after > 0) {
|
||
/* We received an incomplete value. Ask again but with a properly
|
||
* adjusted size. */
|
||
content_max_words += ceil(prop_reply->bytes_after / 4.0);
|
||
/* Repeat the request, with adjusted size */
|
||
free(prop_reply);
|
||
prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
|
||
XCB_GET_PROPERTY_TYPE_ANY, 0, content_max_words);
|
||
prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
|
||
if (prop_reply == NULL) {
|
||
free(atom_reply);
|
||
return -1;
|
||
}
|
||
}
|
||
if (xcb_get_property_value_length(prop_reply) == 0) {
|
||
free(atom_reply);
|
||
free(prop_reply);
|
||
return -1;
|
||
}
|
||
|
||
const char *walk = (const char *)xcb_get_property_value(prop_reply);
|
||
int remaining = xcb_get_property_value_length(prop_reply);
|
||
for (int i = 0; i < 5 && remaining > 0; i++) {
|
||
const int len = strnlen(walk, remaining);
|
||
switch (i) {
|
||
case 0:
|
||
sasprintf((char **)&(xkb_names->rules), "%.*s", len, walk);
|
||
break;
|
||
case 1:
|
||
sasprintf((char **)&(xkb_names->model), "%.*s", len, walk);
|
||
break;
|
||
case 2:
|
||
sasprintf((char **)&(xkb_names->layout), "%.*s", len, walk);
|
||
break;
|
||
case 3:
|
||
sasprintf((char **)&(xkb_names->variant), "%.*s", len, walk);
|
||
break;
|
||
case 4:
|
||
sasprintf((char **)&(xkb_names->options), "%.*s", len, walk);
|
||
break;
|
||
}
|
||
DLOG("component %d of _XKB_RULES_NAMES is \"%.*s\"\n", i, len, walk);
|
||
walk += (len + 1);
|
||
remaining -= (len + 1);
|
||
}
|
||
|
||
free(atom_reply);
|
||
free(prop_reply);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
|
||
*
|
||
*/
|
||
bool load_keymap(void) {
|
||
if (xkb_context == NULL) {
|
||
if ((xkb_context = xkb_context_new(0)) == NULL) {
|
||
ELOG("Could not create xkbcommon context\n");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
struct xkb_keymap *new_keymap = NULL;
|
||
int32_t device_id;
|
||
if (xkb_supported && (device_id = xkb_x11_get_core_keyboard_device_id(conn)) > -1) {
|
||
if ((new_keymap = xkb_x11_keymap_new_from_device(xkb_context, conn, device_id, 0)) == NULL) {
|
||
ELOG("xkb_x11_keymap_new_from_device failed\n");
|
||
return false;
|
||
}
|
||
} else {
|
||
/* Likely there is no XKB support on this server, possibly because it
|
||
* is a VNC server. */
|
||
LOG("No XKB / core keyboard device? Assembling keymap from local RMLVO.\n");
|
||
struct xkb_rule_names names = {
|
||
.rules = NULL,
|
||
.model = NULL,
|
||
.layout = NULL,
|
||
.variant = NULL,
|
||
.options = NULL};
|
||
if (fill_rmlvo_from_root(&names) == -1) {
|
||
ELOG("Could not get _XKB_RULES_NAMES atom from root window, falling back to defaults.\n");
|
||
/* Using NULL for the fields of xkb_rule_names. */
|
||
}
|
||
new_keymap = xkb_keymap_new_from_names(xkb_context, &names, 0);
|
||
free((char *)names.rules);
|
||
free((char *)names.model);
|
||
free((char *)names.layout);
|
||
free((char *)names.variant);
|
||
free((char *)names.options);
|
||
if (new_keymap == NULL) {
|
||
ELOG("xkb_keymap_new_from_names failed\n");
|
||
return false;
|
||
}
|
||
}
|
||
xkb_keymap_unref(xkb_keymap);
|
||
xkb_keymap = new_keymap;
|
||
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
* Returns a list of buttons that should be grabbed on a window.
|
||
* This list will always contain 1–3, all higher buttons will only be returned
|
||
* if there is a whole-window binding for it on some window in the current
|
||
* config.
|
||
* The list is terminated by a 0.
|
||
*/
|
||
int *bindings_get_buttons_to_grab(void) {
|
||
/* Let's make the reasonable assumption that there's no more than 25
|
||
* buttons. */
|
||
int num_max = 25;
|
||
|
||
int buffer[num_max];
|
||
int num = 0;
|
||
|
||
/* We always return buttons 1 through 3. */
|
||
buffer[num++] = 1;
|
||
buffer[num++] = 2;
|
||
buffer[num++] = 3;
|
||
|
||
Binding *bind;
|
||
TAILQ_FOREACH (bind, bindings, bindings) {
|
||
if (num + 1 == num_max)
|
||
break;
|
||
|
||
/* We are only interested in whole window mouse bindings. */
|
||
if (bind->input_type != B_MOUSE || !bind->whole_window)
|
||
continue;
|
||
|
||
long button;
|
||
if (!parse_long(bind->symbol + (sizeof("button") - 1), &button, 10)) {
|
||
ELOG("Could not parse button number, skipping this binding. Please report this bug in i3.\n");
|
||
continue;
|
||
}
|
||
|
||
/* Avoid duplicates. */
|
||
for (int i = 0; i < num; i++) {
|
||
if (buffer[i] == button)
|
||
continue;
|
||
}
|
||
|
||
buffer[num++] = button;
|
||
}
|
||
buffer[num++] = 0;
|
||
|
||
int *buttons = scalloc(num, sizeof(int));
|
||
memcpy(buttons, buffer, num * sizeof(int));
|
||
|
||
return buttons;
|
||
}
|