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Support basic Emacs-style line-editing bindings

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Implements: https://todo.sr.ht/~adnano/wmenu/3
This commit is contained in:
adnano 2022-12-02 10:08:24 -05:00
parent 8cc6a22737
commit 972277a5e0
1 changed files with 90 additions and 0 deletions
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90
main.c
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@ -501,6 +501,96 @@ void keypress(struct menu_state *state, enum wl_keyboard_key_state key_state,
XKB_MOD_NAME_SHIFT,
XKB_STATE_MODS_DEPRESSED | XKB_STATE_MODS_LATCHED);
if (ctrl) {
// Emacs-style line editing bindings
switch (sym) {
case XKB_KEY_a:
sym = XKB_KEY_Home;
break;
case XKB_KEY_b:
sym = XKB_KEY_Left;
break;
case XKB_KEY_c:
sym = XKB_KEY_Escape;
break;
case XKB_KEY_d:
sym = XKB_KEY_Delete;
break;
case XKB_KEY_e:
sym = XKB_KEY_End;
break;
case XKB_KEY_f:
sym = XKB_KEY_Right;
break;
case XKB_KEY_g:
sym = XKB_KEY_Escape;
break;
case XKB_KEY_h:
sym = XKB_KEY_BackSpace;
break;
case XKB_KEY_i:
sym = XKB_KEY_Tab;
break;
case XKB_KEY_j:
case XKB_KEY_J:
case XKB_KEY_m:
case XKB_KEY_M:
sym = XKB_KEY_Return;
ctrl = false;
break;
case XKB_KEY_n:
sym = XKB_KEY_Down;
break;
case XKB_KEY_p:
sym = XKB_KEY_Up;
break;
case XKB_KEY_k:
// Delete right
state->text[state->cursor] = '\0';
match(state);
render_frame(state);
return;
case XKB_KEY_u:
// Delete left
insert(state, NULL, 0 - state->cursor);
render_frame(state);
return;
case XKB_KEY_w:
// Delete word
while (state->cursor > 0 && state->text[nextrune(state, -1)] == ' ') {
insert(state, NULL, nextrune(state, -1) - state->cursor);
}
while (state->cursor > 0 && state->text[nextrune(state, -1)] != ' ') {
insert(state, NULL, nextrune(state, -1) - state->cursor);
}
render_frame(state);
return;
case XKB_KEY_Left:
case XKB_KEY_KP_Left:
// Move to beginning of word
while (state->cursor > 0 && state->text[nextrune(state, -1)] == ' ') {
state->cursor = nextrune(state, -1);
}
while (state->cursor > 0 && state->text[nextrune(state, -1)] != ' ') {
state->cursor = nextrune(state, -1);
}
render_frame(state);
return;
case XKB_KEY_Right:
case XKB_KEY_KP_Right:
// Move to end of word
while (state->cursor > 0 && state->text[nextrune(state, -1)] == ' ') {
state->cursor = nextrune(state, -1);
}
while (state->cursor > 0 && state->text[nextrune(state, -1)] != ' ') {
state->cursor = nextrune(state, -1);
}
render_frame(state);
return;
}
}
char buf[8];
size_t len = strlen(state->text);
switch (sym) {