*/
#include "all.h"
+#include <xkbcommon/xkbcommon.h>
+
+pid_t command_error_nagbar_pid = -1;
+
/*
* The name of the default mode.
*
*
*/
Binding *configure_binding(const char *bindtype, const char *modifiers, const char *input_code,
- const char *release, const char *command, const char *modename) {
+ const char *release, const char *command, const char *modename) {
Binding *new_binding = scalloc(sizeof(Binding));
DLOG("bindtype %s, modifiers %s, input code %s, release %s\n", bindtype, modifiers, input_code, release);
new_binding->release = (release != NULL ? B_UPON_KEYRELEASE : B_UPON_KEYPRESS);
if (strcmp(bindtype, "bindsym") == 0) {
+ new_binding->input_type = (strncasecmp(input_code, "button", (sizeof("button") - 1)) == 0
+ ? B_MOUSE
+ : B_KEYBOARD);
+
new_binding->symbol = sstrdup(input_code);
} else {
// TODO: strtol with proper error handling
new_binding->keycode = atoi(input_code);
+ new_binding->input_type = B_KEYBOARD;
if (new_binding->keycode == 0) {
ELOG("Could not parse \"%s\" as an input code, ignoring this binding.\n", input_code);
FREE(new_binding);
}
new_binding->mods = modifiers_from_str(modifiers);
new_binding->command = sstrdup(command);
- new_binding->input_type = B_KEYBOARD;
struct Mode *mode = mode_from_name(modename);
TAILQ_INSERT_TAIL(mode->bindings, new_binding, bindings);
return new_binding;
}
+
+static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
+ if (bind->input_type != B_KEYBOARD)
+ return;
+
+ DLOG("Grabbing %d with modifiers %d (with mod_mask_lock %d)\n", keycode, bind->mods, bind->mods | XCB_MOD_MASK_LOCK);
+/* 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;
+ }
+ GRAB_KEY(mods);
+ GRAB_KEY(mods | xcb_numlock_mask);
+ GRAB_KEY(mods | XCB_MOD_MASK_LOCK);
+ GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
+}
+
+/*
+ * 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->input_type != B_KEYBOARD ||
+ (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 (uint32_t i = 0; i < bind->number_keycodes; i++)
+ grab_keycode_for_binding(conn, bind, *walk++);
+ }
+}
+
+/*
+ * Returns a pointer to the Binding with the specified modifiers and
+ * keycode or NULL if no such binding exists.
+ *
+ */
+static Binding *get_binding(uint16_t modifiers, bool is_release, uint16_t input_code, input_type_t input_type) {
+ Binding *bind;
+
+ if (!is_release) {
+ /* On a press event, we first reset all B_UPON_KEYRELEASE_IGNORE_MODS
+ * bindings back to B_UPON_KEYRELEASE */
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ if (bind->input_type != input_type)
+ continue;
+ if (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS)
+ bind->release = B_UPON_KEYRELEASE;
+ }
+ }
+
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ /* First compare the modifiers (unless this is a
+ * B_UPON_KEYRELEASE_IGNORE_MODS binding and this is a KeyRelease
+ * event) */
+ if (bind->input_type != input_type)
+ continue;
+ if (bind->mods != modifiers &&
+ (bind->release != B_UPON_KEYRELEASE_IGNORE_MODS ||
+ !is_release))
+ continue;
+
+ /* For keyboard bindings where a symbol was specified by the user, we
+ * need to look in the array of translated keycodes for the event’s
+ * keycode */
+ if (input_type == B_KEYBOARD && bind->symbol != NULL) {
+ if (memmem(bind->translated_to,
+ bind->number_keycodes * sizeof(xcb_keycode_t),
+ &input_code, sizeof(xcb_keycode_t)) == NULL)
+ continue;
+ } else {
+ /* This case is easier: The user specified a keycode */
+ if (bind->keycode != input_code)
+ continue;
+ }
+
+ /* If this binding is a release binding, it matches the key which the
+ * user pressed. We therefore mark it as B_UPON_KEYRELEASE_IGNORE_MODS
+ * for later, so that the user can release the modifiers before the
+ * actual key or button and the release event will still be matched. */
+ if (bind->release == B_UPON_KEYRELEASE && !is_release)
+ bind->release = B_UPON_KEYRELEASE_IGNORE_MODS;
+
+ /* Check if the binding is for a press or a release event */
+ if ((bind->release == B_UPON_KEYPRESS && is_release) ||
+ (bind->release >= B_UPON_KEYRELEASE && !is_release))
+ continue;
+
+ break;
+ }
+
+ return (bind == TAILQ_END(bindings) ? NULL : bind);
+}
+
+/*
+ * Returns a pointer to the Binding that matches the given xcb button or key
+ * event or NULL if no such binding exists.
+ *
+ */
+Binding *get_binding_from_xcb_event(xcb_generic_event_t *event) {
+ bool is_release = (event->response_type == XCB_KEY_RELEASE || event->response_type == XCB_BUTTON_RELEASE);
+
+ input_type_t input_type = ((event->response_type == XCB_BUTTON_RELEASE || event->response_type == XCB_BUTTON_PRESS)
+ ? B_MOUSE
+ : B_KEYBOARD);
+
+ uint16_t event_state = ((xcb_key_press_event_t *)event)->state;
+ uint16_t event_detail = ((xcb_key_press_event_t *)event)->detail;
+
+ /* Remove the numlock bit, all other bits are modifiers we can bind to */
+ uint16_t state_filtered = event_state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
+ DLOG("(removed numlock, state = %d)\n", state_filtered);
+ /* Only use the lower 8 bits of the state (modifier masks) so that mouse
+ * button masks are filtered out */
+ state_filtered &= 0xFF;
+ DLOG("(removed upper 8 bits, state = %d)\n", state_filtered);
+
+ if (xkb_current_group == XkbGroup2Index)
+ state_filtered |= BIND_MODE_SWITCH;
+
+ DLOG("(checked mode_switch, state %d)\n", state_filtered);
+
+ /* Find the binding */
+ Binding *bind = get_binding(state_filtered, is_release, event_detail, input_type);
+
+ /* No match? Then the user has Mode_switch enabled but does not have a
+ * specific keybinding. Fall back to the default keybindings (without
+ * Mode_switch). Makes it much more convenient for users of a hybrid
+ * layout (like ru). */
+ if (bind == NULL) {
+ state_filtered &= ~(BIND_MODE_SWITCH);
+ DLOG("no match, new state_filtered = %d\n", state_filtered);
+ if ((bind = get_binding(state_filtered, is_release, event_detail, input_type)) == NULL) {
+ /* This is not a real error since we can have release and
+ * non-release bindings. On a press event for which there is only a
+ * !release-binding, but no release-binding, the corresponding
+ * release event will trigger this. No problem, though. */
+ DLOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
+ state_filtered, event_detail);
+ }
+ }
+
+ return bind;
+}
+
+/*
+ * Translates keysymbols to keycodes for all bindings which use keysyms.
+ *
+ */
+void translate_keysyms(void) {
+ Binding *bind;
+ xcb_keysym_t keysym;
+ int col;
+ xcb_keycode_t i, min_keycode, max_keycode;
+
+ min_keycode = xcb_get_setup(conn)->min_keycode;
+ max_keycode = xcb_get_setup(conn)->max_keycode;
+
+ TAILQ_FOREACH(bind, bindings, bindings) {
+ if (bind->input_type == B_MOUSE) {
+ int button = atoi(bind->symbol + (sizeof("button") - 1));
+ bind->keycode = button;
+
+ if (button < 1)
+ ELOG("Could not translate string to button: \"%s\"\n", bind->symbol);
+
+ continue;
+ }
+
+ if (bind->keycode > 0)
+ continue;
+
+ /* We need to translate the symbol to a keycode */
+ 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;
+ }
+
+ /* 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);
+ 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))
+ 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;
+ }
+
+ DLOG("Translated symbol \"%s\" to %d keycode\n", bind->symbol,
+ bind->number_keycodes);
+ }
+}
+
+/*
+ * 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 (strcasecmp(mode->name, new_mode) != 0)
+ continue;
+
+ ungrab_all_keys(conn);
+ bindings = mode->bindings;
+ translate_keysyms();
+ grab_all_keys(conn, false);
+
+ char *event_msg;
+ sasprintf(&event_msg, "{\"change\":\"%s\"}", mode->name);
+
+ ipc_send_event("mode", I3_IPC_EVENT_MODE, event_msg);
+ FREE(event_msg);
+
+ return;
+ }
+
+ ELOG("ERROR: Mode not found\n");
+}
+
+/*
+ * 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. */
+ /* XXX: It should be checked at a later place (when translating the
+ * keysym to keycodes) if there are any duplicates */
+ 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->mods != current->mods ||
+ bind->release != current->release)
+ continue;
+
+ context->has_errors = true;
+ if (current->keycode != 0) {
+ ELOG("Duplicate keybinding in config file:\n modmask %d with keycode %d, command \"%s\"\n",
+ current->mods, current->keycode, current->command);
+ } else {
+ ELOG("Duplicate keybinding in config file:\n modmask %d with keysym %s, command \"%s\"\n",
+ current->mods, current->symbol, current->command);
+ }
+ }
+ }
+}
+
+/*
+ * 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. Caller should
+ * render tree if needs_tree_render is true. Free with command_result_free().
+ *
+ */
+CommandResult *run_binding(Binding *bind, Con *con) {
+ char *command;
+
+ /* We need to copy the command since “reload” may be part of the command,
+ * and then the memory that bind->command points to may not contain the
+ * same data anymore. */
+ if (con == NULL)
+ command = sstrdup(bind->command);
+ else
+ sasprintf(&command, "[con_id=\"%d\"] %s", con, bind->command);
+
+ CommandResult *result = parse_command(command, 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);
+ }
+
+ /* TODO: emit event for running a binding */
+
+ return result;
+}