842 lines
31 KiB
C
842 lines
31 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 <xkbcommon/xkbcommon.h>
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#include <xkbcommon/xkbcommon-x11.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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/* 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 *command, const char *modename, bool pango_markup) {
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Binding *new_binding = scalloc(1, sizeof(Binding));
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DLOG("bindtype %s, modifiers %s, input code %s, release %s\n", 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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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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char *endptr;
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long keycode = strtol(input_code, &endptr, 10);
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new_binding->keycode = keycode;
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new_binding->input_type = B_KEYBOARD;
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if (keycode == LONG_MAX || keycode == LONG_MIN || keycode < 0 || *endptr != '\0' || endptr == input_code) {
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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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}
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new_binding->command = sstrdup(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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return new_binding;
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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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if (bind->input_type != B_KEYBOARD)
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return;
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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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} while (0)
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int mods = bind->event_state_mask;
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if (((mods >> 16) & I3_XKB_GROUP_MASK_1) && xkb_current_group != XCB_XKB_GROUP_1)
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return;
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if (((mods >> 16) & I3_XKB_GROUP_MASK_2) && xkb_current_group != XCB_XKB_GROUP_2)
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return;
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if (((mods >> 16) & I3_XKB_GROUP_MASK_3) && xkb_current_group != XCB_XKB_GROUP_3)
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return;
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if (((mods >> 16) & I3_XKB_GROUP_MASK_4) && xkb_current_group != XCB_XKB_GROUP_4)
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return;
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mods &= 0xFFFF;
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DLOG("Grabbing keycode %d with event state mask 0x%x (mods 0x%x)\n",
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keycode, bind->event_state_mask, mods);
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GRAB_KEY(mods);
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GRAB_KEY(mods | xcb_numlock_mask);
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GRAB_KEY(mods | XCB_MOD_MASK_LOCK);
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GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
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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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/* 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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for (uint32_t i = 0; i < bind->number_keycodes; i++)
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grab_keycode_for_binding(conn, bind, bind->translated_to[i]);
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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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bool grab_scrollwheel = bindings_should_grab_scrollwheel_buttons();
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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, grab_scrollwheel);
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}
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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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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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const uint32_t xkb_group_mask = (bind->event_state_mask & 0xFFFF0000);
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/* modifiers_mask is a special case: a value of 0 does not mean “match all”,
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* but rather “match exactly when no modifiers are present”. */
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const uint32_t modifiers_mask = (bind->event_state_mask & 0x0000FFFF);
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const bool groups_match = ((xkb_group_state & xkb_group_mask) == xkb_group_mask);
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bool mods_match;
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if (modifiers_mask == 0) {
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/* Verify no modifiers are pressed. A bitwise AND would lead to
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* false positives, see issue #2002. */
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mods_match = (modifiers_state == 0);
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} else {
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mods_match = ((modifiers_state & modifiers_mask) == modifiers_mask);
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}
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const bool state_matches = (groups_match && mods_match);
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DLOG("binding groups_match = %s, mods_match = %s, state_matches = %s\n",
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(groups_match ? "yes" : "no"),
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(mods_match ? "yes" : "no"),
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(state_matches ? "yes" : "no"));
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/* First compare the state_filtered (unless this is a
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* B_UPON_KEYRELEASE_IGNORE_MODS binding and this is a KeyRelease
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* event) */
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if (bind->input_type != input_type)
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continue;
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if (!state_matches &&
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(bind->release != B_UPON_KEYRELEASE_IGNORE_MODS ||
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!is_release))
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continue;
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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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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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if (memmem(bind->translated_to,
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bind->number_keycodes * sizeof(xcb_keycode_t),
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&input_keycode, sizeof(xcb_keycode_t)) == NULL)
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continue;
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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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/* 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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/* 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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(bind->release >= B_UPON_KEYRELEASE && !is_release))
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continue;
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break;
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}
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return (bind == TAILQ_END(bindings) ? NULL : bind);
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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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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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/* Remove the numlock bit */
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i3_event_state_mask_t state_filtered = event_state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
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DLOG("(removed numlock, state = 0x%x)\n", state_filtered);
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/* Transform the keyboard_group from bit 13 and bit 14 into an
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* i3_xkb_group_mask_t, so that get_binding() can just bitwise AND the
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* configured bindings against |state_filtered|.
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*
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* These bits are only set because we set the XKB client flags
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* 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
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* section 2.2.2:
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* http://www.x.org/releases/X11R7.7/doc/kbproto/xkbproto.html#Computing_A_State_Field_from_an_XKB_State */
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switch ((event_state & 0x6000) >> 13) {
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case XCB_XKB_GROUP_1:
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state_filtered |= (I3_XKB_GROUP_MASK_1 << 16);
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break;
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case XCB_XKB_GROUP_2:
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state_filtered |= (I3_XKB_GROUP_MASK_2 << 16);
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break;
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case XCB_XKB_GROUP_3:
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state_filtered |= (I3_XKB_GROUP_MASK_3 << 16);
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break;
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case XCB_XKB_GROUP_4:
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state_filtered |= (I3_XKB_GROUP_MASK_4 << 16);
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break;
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}
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state_filtered &= ~0x6000;
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DLOG("(transformed keyboard group, state = 0x%x)\n", state_filtered);
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return get_binding(state_filtered, is_release, event_detail, input_type);
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}
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struct resolve {
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/* The binding which we are resolving. */
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Binding *bind;
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/* |bind|’s keysym (translated to xkb_keysym_t), e.g. XKB_KEY_R. */
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xkb_keysym_t keysym;
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/* The xkb state built from the user-provided modifiers and group. */
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struct xkb_state *xkb_state;
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/* Like |xkb_state|, just without the shift modifier, if shift was specified. */
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struct xkb_state *xkb_state_no_shift;
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};
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/*
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* add_keycode_if_matches is called for each keycode in the keymap and will add
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* the keycode to |data->bind| if the keycode can result in the keysym
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* |data->resolving|.
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*
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*/
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static void add_keycode_if_matches(struct xkb_keymap *keymap, xkb_keycode_t key, void *data) {
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const struct resolve *resolving = data;
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xkb_keysym_t sym = xkb_state_key_get_one_sym(resolving->xkb_state, key);
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if (sym != resolving->keysym) {
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/* Check if Shift was specified, and try resolving the symbol without
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* shift, so that “bindsym $mod+Shift+a nop” actually works. */
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const xkb_layout_index_t layout = xkb_state_key_get_layout(resolving->xkb_state, key);
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if (layout == XKB_LAYOUT_INVALID)
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return;
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if (xkb_state_key_get_level(resolving->xkb_state, key, layout) > 1)
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return;
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sym = xkb_state_key_get_one_sym(resolving->xkb_state_no_shift, key);
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if (sym != resolving->keysym)
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return;
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}
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Binding *bind = resolving->bind;
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bind->number_keycodes++;
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bind->translated_to = srealloc(bind->translated_to,
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(sizeof(xcb_keycode_t) *
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bind->number_keycodes));
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bind->translated_to[bind->number_keycodes - 1] = key;
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}
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/*
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* Translates keysymbols to keycodes for all bindings which use keysyms.
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*
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*/
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void translate_keysyms(void) {
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struct xkb_state *dummy_state = xkb_state_new(xkb_keymap);
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if (dummy_state == NULL) {
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ELOG("Could not create XKB state, cannot translate keysyms.\n");
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return;
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}
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struct xkb_state *dummy_state_no_shift = xkb_state_new(xkb_keymap);
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if (dummy_state_no_shift == NULL) {
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ELOG("Could not create XKB state, cannot translate keysyms.\n");
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return;
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}
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bool has_errors = false;
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Binding *bind;
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TAILQ_FOREACH(bind, bindings, bindings) {
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if (bind->input_type == B_MOUSE) {
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char *endptr;
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long button = strtol(bind->symbol + (sizeof("button") - 1), &endptr, 10);
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bind->keycode = button;
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if (button == LONG_MAX || button == LONG_MIN || button < 0 || *endptr != '\0' || endptr == bind->symbol)
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ELOG("Could not translate string to button: \"%s\"\n", bind->symbol);
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continue;
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}
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if (bind->keycode > 0)
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continue;
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/* We need to translate the symbol to a keycode */
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const xkb_keysym_t keysym = xkb_keysym_from_name(bind->symbol, XKB_KEYSYM_NO_FLAGS);
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if (keysym == XKB_KEY_NoSymbol) {
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ELOG("Could not translate string to key symbol: \"%s\"\n",
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bind->symbol);
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continue;
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}
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xkb_layout_index_t group = XCB_XKB_GROUP_1;
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if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
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group = XCB_XKB_GROUP_2;
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else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
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group = XCB_XKB_GROUP_3;
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else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
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group = XCB_XKB_GROUP_4;
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DLOG("group = %d, event_state_mask = %d, &2 = %s, &3 = %s, &4 = %s\n", group,
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bind->event_state_mask,
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(bind->event_state_mask & I3_XKB_GROUP_MASK_2) ? "yes" : "no",
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(bind->event_state_mask & I3_XKB_GROUP_MASK_3) ? "yes" : "no",
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(bind->event_state_mask & I3_XKB_GROUP_MASK_4) ? "yes" : "no");
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(void)xkb_state_update_mask(
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dummy_state,
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(bind->event_state_mask & 0x1FFF) /* xkb_mod_mask_t base_mods, */,
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0 /* xkb_mod_mask_t latched_mods, */,
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0 /* xkb_mod_mask_t locked_mods, */,
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0 /* xkb_layout_index_t base_group, */,
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0 /* xkb_layout_index_t latched_group, */,
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group /* xkb_layout_index_t locked_group, */);
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(void)xkb_state_update_mask(
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dummy_state_no_shift,
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(bind->event_state_mask & 0x1FFF) ^ XCB_KEY_BUT_MASK_SHIFT /* xkb_mod_mask_t base_mods, */,
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0 /* xkb_mod_mask_t latched_mods, */,
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0 /* xkb_mod_mask_t locked_mods, */,
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0 /* xkb_layout_index_t base_group, */,
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0 /* xkb_layout_index_t latched_group, */,
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group /* xkb_layout_index_t locked_group, */);
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struct resolve resolving = {
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.bind = bind,
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.keysym = keysym,
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.xkb_state = dummy_state,
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.xkb_state_no_shift = dummy_state_no_shift,
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};
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FREE(bind->translated_to);
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bind->number_keycodes = 0;
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xkb_keymap_key_for_each(xkb_keymap, add_keycode_if_matches, &resolving);
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char *keycodes = sstrdup("");
|
||
for (uint32_t n = 0; n < bind->number_keycodes; n++) {
|
||
char *tmp;
|
||
sasprintf(&tmp, "%s %d", keycodes, bind->translated_to[n]);
|
||
free(keycodes);
|
||
keycodes = tmp;
|
||
|
||
/* check for duplicate bindings */
|
||
Binding *check;
|
||
TAILQ_FOREACH(check, bindings, bindings) {
|
||
if (check == bind)
|
||
continue;
|
||
if (check->symbol != NULL)
|
||
continue;
|
||
if (check->keycode != bind->translated_to[n] ||
|
||
check->event_state_mask != bind->event_state_mask ||
|
||
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, bind->number_keycodes);
|
||
free(keycodes);
|
||
}
|
||
|
||
xkb_state_unref(dummy_state);
|
||
xkb_state_unref(dummy_state_no_shift);
|
||
|
||
if (has_errors) {
|
||
start_config_error_nagbar(current_configpath, true);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* 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);
|
||
|
||
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("ERROR: 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);
|
||
if (bind->translated_to != NULL) {
|
||
ret->translated_to = smalloc(sizeof(xcb_keycode_t) * bind->number_keycodes);
|
||
memcpy(ret->translated_to, bind->translated_to, sizeof(xcb_keycode_t) * bind->number_keycodes);
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
* Frees the binding. If bind is null, it simply returns.
|
||
*/
|
||
void binding_free(Binding *bind) {
|
||
if (bind == NULL) {
|
||
return;
|
||
}
|
||
|
||
FREE(bind->symbol);
|
||
FREE(bind->translated_to);
|
||
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. 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 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);
|
||
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;
|
||
|
||
xcb_window_t root = root_screen->root;
|
||
|
||
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);
|
||
remaining -= len;
|
||
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);
|
||
}
|
||
|
||
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");
|
||
if ((new_keymap = xkb_keymap_new_from_names(xkb_context, &names, 0)) == NULL) {
|
||
ELOG("xkb_keymap_new_from_names(NULL) failed\n");
|
||
return false;
|
||
}
|
||
}
|
||
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(RMLVO) failed\n");
|
||
return false;
|
||
}
|
||
}
|
||
xkb_keymap_unref(xkb_keymap);
|
||
xkb_keymap = new_keymap;
|
||
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
* Returns true if the current config has any binding to a scroll wheel button
|
||
* (4 or 5) which is a whole-window binding.
|
||
* We need this to figure out whether we should grab all buttons or just 1-3
|
||
* when managing a window. See #2049.
|
||
*
|
||
*/
|
||
bool bindings_should_grab_scrollwheel_buttons(void) {
|
||
Binding *bind;
|
||
TAILQ_FOREACH(bind, bindings, bindings) {
|
||
/* We are only interested in whole window mouse bindings. */
|
||
if (bind->input_type != B_MOUSE || !bind->whole_window)
|
||
continue;
|
||
|
||
char *endptr;
|
||
long button = strtol(bind->symbol + (sizeof("button") - 1), &endptr, 10);
|
||
if (button == LONG_MAX || button == LONG_MIN || button < 0 || *endptr != '\0' || endptr == bind->symbol) {
|
||
ELOG("Could not parse button number, skipping this binding. Please report this bug in i3.\n");
|
||
continue;
|
||
}
|
||
|
||
/* If the binding is for either scrollwheel button, we need to grab everything. */
|
||
if (button == 4 || button == 5) {
|
||
return true;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|