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Add mode 2031 support to automatically report dark or light theme. tmux

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will guess the theme from the background colour on terminals which do
not themselves support the escape sequence. Written by Jonathan
Slenders, GitHub issue 4353.
This commit is contained in:
nicm
2025-03-04 08:45:04 +00:00
parent 3543d79048
commit eaf70c955b
17 changed files with 380 additions and 107 deletions
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161
window.c
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@ -943,7 +943,7 @@ window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
wp = xcalloc(1, sizeof *wp);
wp->window = w;
wp->options = options_create(w->options);
wp->flags = PANE_STYLECHANGED;
wp->flags = (PANE_STYLECHANGED|PANE_THEMECHANGED);
wp->id = next_window_pane_id++;
RB_INSERT(window_pane_tree, &all_window_panes, wp);
@ -1794,3 +1794,162 @@ window_pane_show_scrollbar(struct window_pane *wp, int sb_option)
return (1);
return (0);
}
int
window_pane_get_bg(struct window_pane *wp)
{
int c;
struct grid_cell defaults;
c = window_pane_get_bg_control_client(wp);
if (c == -1) {
tty_default_colours(&defaults, wp);
if (COLOUR_DEFAULT(defaults.bg))
c = window_get_bg_client(wp);
else
c = defaults.bg;
}
return (c);
}
/* Get a client with a background for the pane. */
int
window_get_bg_client(struct window_pane *wp)
{
struct window *w = wp->window;
struct client *loop;
TAILQ_FOREACH(loop, &clients, entry) {
if (loop->flags & CLIENT_UNATTACHEDFLAGS)
continue;
if (loop->session == NULL || !session_has(loop->session, w))
continue;
if (loop->tty.bg == -1)
continue;
return (loop->tty.bg);
}
return (-1);
}
/*
* If any control mode client exists that has provided a bg color, return it.
* Otherwise, return -1.
*/
int
window_pane_get_bg_control_client(struct window_pane *wp)
{
struct client *c;
if (wp->control_bg == -1)
return (-1);
TAILQ_FOREACH(c, &clients, entry) {
if (c->flags & CLIENT_CONTROL)
return (wp->control_bg);
}
return (-1);
}
/*
* Get a client with a foreground for the pane. There isn't much to choose
* between them so just use the first.
*/
int
window_pane_get_fg(struct window_pane *wp)
{
struct window *w = wp->window;
struct client *loop;
TAILQ_FOREACH(loop, &clients, entry) {
if (loop->flags & CLIENT_UNATTACHEDFLAGS)
continue;
if (loop->session == NULL || !session_has(loop->session, w))
continue;
if (loop->tty.fg == -1)
continue;
return (loop->tty.fg);
}
return (-1);
}
/*
* If any control mode client exists that has provided a fg color, return it.
* Otherwise, return -1.
*/
int
window_pane_get_fg_control_client(struct window_pane *wp)
{
struct client *c;
if (wp->control_fg == -1)
return (-1);
TAILQ_FOREACH(c, &clients, entry) {
if (c->flags & CLIENT_CONTROL)
return (wp->control_fg);
}
return (-1);
}
enum client_theme
window_pane_get_theme(struct window_pane *wp)
{
struct window *w = wp->window;
struct client *loop;
enum client_theme theme;
int found_light = 0, found_dark = 0;
/*
* Derive theme from pane background color, if it's not the default
* colour.
*/
theme = colour_totheme(window_pane_get_bg(wp));
if (theme != THEME_UNKNOWN)
return (theme);
/* Try to find a client that has a theme. */
TAILQ_FOREACH(loop, &clients, entry) {
if (loop->flags & CLIENT_UNATTACHEDFLAGS)
continue;
if (loop->session == NULL || !session_has(loop->session, w))
continue;
switch (loop->theme) {
case THEME_LIGHT:
found_light = 1;
break;
case THEME_DARK:
found_dark = 1;
break;
case THEME_UNKNOWN:
break;
}
}
if (found_dark && !found_light)
return (THEME_DARK);
if (found_light && !found_dark)
return (THEME_LIGHT);
return (THEME_UNKNOWN);
}
void
window_pane_send_theme_update(struct window_pane *wp)
{
if (~wp->flags & PANE_THEMECHANGED)
return;
if (~wp->screen->mode & MODE_THEME_UPDATES)
return;
switch (window_pane_get_theme(wp)) {
case THEME_LIGHT:
input_key_pane(wp, KEYC_REPORT_LIGHT_THEME, NULL);
break;
case THEME_DARK:
input_key_pane(wp, KEYC_REPORT_DARK_THEME, NULL);
break;
case THEME_UNKNOWN:
break;
}
wp->flags &= ~PANE_THEMECHANGED;
}