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csi: add support for DECNKM private mode

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This is equivalent to DECKPAM/DECKPNM when enabled/disabled, but can
also be saved/restored/queried with XTSAVE/XTRESTORE/DECRQM.

See also:

* https://vt100.net/docs/vt510-rm/DECNKM.html
* https://vt100.net/docs/vt510-rm/DECKPAM.html
* https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-PC-Style-Function-Keys
This commit is contained in:
Craig Barnes 2022-03-19 13:14:54 +00:00
parent a1287220ab
commit 8d4d22218e
4 changed files with 17 additions and 0 deletions
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5
CHANGELOG.md
View file

@ -45,6 +45,8 @@
* Add "xterm" as fallback cursor where "text" is not available.
* `[key-bindings].scrollback-home|end` options.
* Socket activation for `foot --server` and accompanying systemd unit files
* Support for [DECNKM](https://vt100.net/docs/vt510-rm/DECNKM.html), which
allows setting/saving/restoring/querying the keypad mode.
### Changed
@ -88,8 +90,11 @@
### Security
### Contributors
* Craig Barnes
## 1.11.0

8
csi.c
View file

@ -393,6 +393,11 @@ decset_decrst(struct terminal *term, unsigned param, bool enable)
term->reverse_wrap = enable;
break;
case 66:
/* DECNKM */
term->keypad_keys_mode = enable ? KEYPAD_APPLICATION : KEYPAD_NUMERICAL;
break;
case 80:
term->sixel.scrolling = !enable;
break;
@ -603,6 +608,7 @@ decrqm(const struct terminal *term, unsigned param, bool *enabled)
case 12: *enabled = term->cursor_blink.decset; return true;
case 25: *enabled = !term->hide_cursor; return true;
case 45: *enabled = term->reverse_wrap; return true;
case 66: *enabled = term->keypad_keys_mode == KEYPAD_APPLICATION; return true;
case 80: *enabled = !term->sixel.scrolling; return true;
case 1000: *enabled = term->mouse_tracking == MOUSE_CLICK; return true;
case 1001: *enabled = false; return true;
@ -646,6 +652,7 @@ xtsave(struct terminal *term, unsigned param)
case 25: term->xtsave.show_cursor = !term->hide_cursor; break;
case 45: term->xtsave.reverse_wrap = term->reverse_wrap; break;
case 47: term->xtsave.alt_screen = term->grid == &term->alt; break;
case 66: term->xtsave.application_keypad_keys = term->keypad_keys_mode == KEYPAD_APPLICATION; break;
case 80: term->xtsave.sixel_display_mode = !term->sixel.scrolling; break;
case 1000: term->xtsave.mouse_click = term->mouse_tracking == MOUSE_CLICK; break;
case 1001: break;
@ -688,6 +695,7 @@ xtrestore(struct terminal *term, unsigned param)
case 25: enable = term->xtsave.show_cursor; break;
case 45: enable = term->xtsave.reverse_wrap; break;
case 47: enable = term->xtsave.alt_screen; break;
case 66: enable = term->xtsave.application_keypad_keys; break;
case 80: enable = term->xtsave.sixel_display_mode; break;
case 1000: enable = term->xtsave.mouse_click; break;
case 1001: return;

3
doc/foot-ctlseqs.7.scd
View file

@ -268,6 +268,9 @@ that corresponds to one of the following modes:
| 47
: xterm
: Same as 1047 (see below)
| 66
: VT320
: Numeric keypad mode (DECNKM); same as DECKPAM/DECKPNM when enabled/disabled
| 1000
: xterm
: Send mouse x/y on button press/release

1
terminal.h
View file

@ -393,6 +393,7 @@ struct terminal {
struct {
bool origin:1;
bool application_cursor_keys:1;
bool application_keypad_keys:1;
bool reverse:1;
bool show_cursor:1;
bool reverse_wrap:1;