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osc/notify: add support for OSC-99, kitty desktop notifications

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This adds limited support for OSC-99, kitty desktop notifications[^1]. We
support everything defined by the "protocol", except:

* 'a': action to perform on notification activation. Since we don't
  trigger the notification ourselves (over D-Bus), we don't know a)
  which ID the notification got, or b) when it is clicked.
* ... and that's it. Everything else is supported

To be explicit, we *do* support:

* Chunked notifications (d=0|1), allowing the application to append
  data to a notification in chunks, before it's finally displayed.
* Plain UTF-8, or base64-encoded UTF-8 payload (e=0|1).
* Notification identifier (i=xyz).
* Payload type (p=title|body).
* When to honor the notification (o=always|unfocused|invisible), with
  the following quirks:
    - we don't know when the window is invisible, thus it's treated as
      'unfocused'.
    - the foot option 'notify-focus-inhibit' overrides 'always'
* Urgency (u=0|1|2)

[^1]: https://sw.kovidgoyal.net/kitty/desktop-notifications/
This commit is contained in:
Daniel Eklöf 2024-07-19 15:04:28 +02:00
parent 45c7cd3f74
commit b0bf8ca5f7
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GPG key ID: 5BBD4992C116573F
10 changed files with 322 additions and 15 deletions
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21
notify.c
View file

@ -12,14 +12,18 @@
#include "log.h"
#include "config.h"
#include "spawn.h"
#include "terminal.h"
#include "xmalloc.h"
void
notify_notify(const struct terminal *term, const char *title, const char *body)
notify_notify(const struct terminal *term, const char *title, const char *body,
enum notify_when when, enum notify_urgency urgency)
{
LOG_DBG("notify: title=\"%s\", msg=\"%s\"", title, body);
if (term->conf->notify_focus_inhibit && term->kbd_focus) {
if ((term->conf->notify_focus_inhibit || when != NOTIFY_ALWAYS)
&& term->kbd_focus)
{
/* No notifications while we're focused */
return;
}
@ -33,10 +37,17 @@ notify_notify(const struct terminal *term, const char *title, const char *body)
char **argv = NULL;
size_t argc = 0;
const char *urgency_str =
urgency == NOTIFY_URGENCY_LOW
? "low"
: urgency == NOTIFY_URGENCY_NORMAL
? "normal" : "critical";
if (!spawn_expand_template(
&term->conf->notify, 4,
(const char *[]){"app-id", "window-title", "title", "body"},
(const char *[]){term->app_id ? term->app_id : term->conf->app_id, term->window_title, title, body},
&term->conf->notify, 5,
(const char *[]){"app-id", "window-title", "title", "body", "urgency"},
(const char *[]){term->app_id ? term->app_id : term->conf->app_id,
term->window_title, title, body, urgency_str},
&argc, &argv))
{
return;