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core: auto-detect terminal background and apply light theme on first start

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Detect the terminal background (via COLORFGBG or an OSC 11 query) before
GUI init and, on the first start, automatically apply the built-in
"light" theme when a light terminal is detected.

The function gui_term_theme_is_light returns an int (1 if light, 0 otherwise,
0 being the safe value when detection is unsure).
This commit is contained in:
Sébastien Helleu
2026-05-29 11:23:56 +02:00
parent fb220e1afd
commit deedaed1f9
8 changed files with 274 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/core/weechat.c
+36 -13
View File
@@ -98,6 +98,7 @@ char *weechat_argv0 = NULL; /* WeeChat binary file name (argv[0])*/
int weechat_upgrading = 0; /* =1 if WeeChat is upgrading */
int weechat_first_start = 0; /* first start of WeeChat? */
time_t weechat_first_start_time = 0; /* start time (used by /uptime cmd) */
int weechat_term_theme_light = 0; /* 1 if light theme detected */
int weechat_upgrade_count = 0; /* number of /upgrade done */
struct timeval weechat_current_start_timeval; /* start time used to display */
/* duration of /upgrade */
@@ -183,22 +184,34 @@ weechat_startup_message (void)
if (weechat_first_start)
{
/* message on first run (when weechat.conf is created) */
gui_chat_printf (NULL, "");
gui_chat_printf (NULL, _("Welcome to WeeChat!"));
gui_chat_printf (
NULL,
_("Welcome to WeeChat!\n"
"\n"
"If you are discovering WeeChat, it is recommended to read at "
"least the quickstart guide, and the user's guide if you have "
"some time; they explain main WeeChat concepts.\n"
"All WeeChat docs are available at: https://weechat.org/doc/\n"
"\n"
"Moreover, there is inline help with /help on all commands and "
"options (use Tab key to complete the name).\n"
"The command /fset can help to customize WeeChat.\n"
"\n"
"You can add and connect to an IRC server with /server and "
_("If you are discovering WeeChat, it is recommended to "
"read at least the quickstart guide, and the user's guide if "
"you have some time; they explain main WeeChat concepts."));
gui_chat_printf (
NULL,
_("All WeeChat docs are available at: %s"),
WEECHAT_WEBSITE_DOC);
gui_chat_printf (
NULL,
_("Moreover, there is inline help with /help on all commands and "
"options (use Tab key to complete the name)."));
gui_chat_printf (
NULL,
_("The command /fset can help to customize WeeChat."));
gui_chat_printf (
NULL,
_("You can add and connect to an IRC server with /server and "
"/connect commands (see /help server)."));
if (weechat_term_theme_light)
{
gui_chat_printf (
NULL,
_("The \"light\" theme will be automatically applied. "
"Use /theme reset to switch back to the default dark theme."));
}
gui_chat_printf (NULL, "");
gui_chat_printf (NULL, "---");
gui_chat_printf (NULL, "");
@@ -369,6 +382,9 @@ weechat_init (int argc, char *argv[], void (*gui_init_cb)(void))
* weechat_current_start_timeval.tv_usec)
^ getpid ());
/* detect the terminal theme, before initializing the GUI */
weechat_term_theme_light = gui_term_theme_is_light ();
weeurl_init (); /* initialize URL */
string_init (); /* initialize string */
signal_init (); /* initialize signals */
@@ -426,6 +442,13 @@ weechat_init (int argc, char *argv[], void (*gui_init_cb)(void))
weechat_doc_gen_ok = doc_generate (weechat_doc_gen_path);
weechat_quit = 1;
}
if (weechat_first_start && isatty (STDOUT_FILENO) && !weechat_headless && !weechat_doc_gen)
{
/* switch to "light" theme if terminal background was detected as "light" */
if (weechat_term_theme_light)
theme_apply ("light");
}
}
/*
src/core/weechat.h
+1
View File
@@ -55,6 +55,7 @@
#define WEECHAT_COPYRIGHT_DATE "(C) 2003-2026"
#define WEECHAT_WEBSITE "https://weechat.org/"
#define WEECHAT_WEBSITE_DOC "https://weechat.org/doc/"
#define WEECHAT_WEBSITE_DOWNLOAD "https://weechat.org/download/"
#define WEECHAT_AUTHOR_NAME "Sébastien Helleu"
#define WEECHAT_AUTHOR_EMAIL "flashcode@flashtux.org"