Refactor binding accessor

Change the primary binding accessor to `get_binding_from_xcb_event`.

This function gets a binding from a generic xcb event of type KeyPress,
KeyRelease, ButtonPress, or ButtonRelease by determining the input type
(keyboard or mouse), the modifiers pressed from the filtered event
`state`, managing the proper fall back in case mode switch is enabled,
and finally querying the bindings for a binding that matches the event.

The logic of querying keyboard bindings is not intended to be altered by
this change.

The general accessor has been slightly modified to work with mouse
bindings and made private because it is only used in bindings.c
This commit is contained in:
Tony Crisci
2014-05-02 10:22:40 -04:00
committed by Michael Stapelberg
parent c3d46c9145
commit 5fc1b5d02d
4 changed files with 91 additions and 64 deletions

View File

@ -70,40 +70,11 @@ void handle_key_press(xcb_key_press_event_t *event) {
DLOG("%s %d, state raw = %d\n", (key_release ? "KeyRelease" : "KeyPress"), event->detail, event->state);
/* 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);
Binding *bind = get_binding_from_xcb_event((xcb_generic_event_t *)event);
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_keyboard_binding(state_filtered, key_release, event->detail);
/* 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 us, ru). */
if (bind == NULL) {
state_filtered &= ~(BIND_MODE_SWITCH);
DLOG("no match, new state_filtered = %d\n", state_filtered);
if ((bind = get_keyboard_binding(state_filtered, key_release, event->detail)) == NULL) {
/* This is not a real error since we can have release and
* non-release keybindings. On a KeyPress event for which there is
* only a !release-binding, but no release-binding, the
* corresponding KeyRelease event will trigger this. No problem,
* though. */
DLOG("Could not lookup key binding (modifiers %d, keycode %d)\n",
state_filtered, event->detail);
return;
}
}
/* if we couldn't find a binding, we are done */
if (bind == NULL)
return;
char *command_copy = sstrdup(bind->command);
struct CommandResult *command_output = parse_command(command_copy);