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/*
* @author Jon Gjengset <jon@tsp.io>
* @see http://blog.sacaluta.com/2007/08/gtk-system-tray-icon-example.html
*/
#include <gtk/gtk.h>
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
GtkStatusIcon *icon;
char *onclick = NULL;
void tray_icon_on_click(GtkStatusIcon *status_icon,
gpointer user_data)
{
if (onclick != NULL && fork() == 0) {
execl("/bin/sh", "sh", "-c", onclick, (char *) NULL);
}
}
void tray_icon_on_menu(GtkStatusIcon *status_icon, guint button,
guint activate_time, gpointer user_data)
{
printf("Popup menu\n");
}
gboolean set_tooltip(gpointer data)
{
char *p = (char*)data;
if (*p == '\0') {
printf("Removing tooltip\n");
gtk_status_icon_set_has_tooltip(icon, FALSE);
return FALSE;
}
printf("Setting tooltip to '%s'\n", p);
gtk_status_icon_set_tooltip_text(icon, p);
return FALSE;
}
gboolean set_icon(gpointer data)
{
char *p = (char*)data;
printf("Setting icon to '%s'\n", p);
gtk_status_icon_set_from_icon_name(icon, p);
return FALSE;
}
gboolean set_visible(gpointer data)
{
gtk_status_icon_set_visible(icon, data == 0 ? FALSE : TRUE);
return FALSE;
}
gboolean do_quit(gpointer data)
{
gtk_main_quit();
return FALSE;
}
gpointer watch_fifo(gpointer argv)
{
char *buf = malloc(1024*sizeof(char));
char *param;
char *read;
size_t len;
char *fifo_path = (char*)argv;
FILE *fifo;
struct stat fifo_st;
/* outer is for open */
while (1) {
if (stat(fifo_path, &fifo_st) != 0) {
perror("FIFO does not exist, exiting\n");
gdk_threads_add_idle(do_quit, fifo);
break;
}
fifo = fopen(fifo_path, "r");
if (fifo == NULL) {
perror("FIFO went away, exiting\n");
gdk_threads_add_idle(do_quit, fifo);
break;
}
/* inner is for read */
while (1) {
read = fgets(buf, 1024 * sizeof(char), fifo);
if (read == NULL) {
/* no more data in pipe, reopen and block */
fclose(fifo);
break;
}
/* trim string */
while ((*read == '\n' || *read == ' ' || *read == '\t') && *read != '\0') {
read++;
}
if (*read == '\0') {
/* empty command */
continue;
}
/* get rid of trailing newline */
len = strlen(buf);
buf[len-1] = '\0';
len -= 1;
/* only read from this if you *know* there are more arguments */
param = buf + 2;
if (len < 3) {
*param = '\0';
}
switch (*buf) {
case 'q':
gdk_threads_add_idle(do_quit, param);
break;
case 't': /* tooltip */
gdk_threads_add_idle(set_tooltip, param);
break;
case 'i': /* icon */
gdk_threads_add_idle(set_icon, param);
break;
case 'h': /* hide */
gdk_threads_add_idle(set_visible, (void *)0);
break;
case 's': /* show */
gdk_threads_add_idle(set_visible, (void *)1);
break;
case 'c': /* click */
if (onclick != NULL) {
free(onclick);
onclick = NULL;
}
if (*param == '\0') {
printf("Removing onclick handler\n");
break;
}
onclick = malloc((len-2+1) * sizeof(char));
strncpy(onclick, param, len-2+1);
printf("Setting onclick handler to '%s'\n", onclick);
break;
case 'm': /* menu */
fprintf(stderr, "Menu command not yet implemented\n");
break;
default:
fprintf(stderr, "Unknown command: '%c'\n", *buf);
}
gdk_flush();
}
}
return NULL;
}
static GtkStatusIcon *create_tray_icon(char *start_icon)
{
GtkStatusIcon *tray_icon;
tray_icon = gtk_status_icon_new_from_icon_name(start_icon);
g_signal_connect(G_OBJECT(tray_icon), "activate", G_CALLBACK(tray_icon_on_click), NULL);
g_signal_connect(G_OBJECT(tray_icon), "popup-menu", G_CALLBACK(tray_icon_on_menu), NULL);
gtk_status_icon_set_visible(tray_icon, TRUE);
return tray_icon;
}
int main(int argc, char **argv)
{
char *start_icon = "none";
FILE *fifo;
GThread *reader;
gtk_init(&argc, &argv);
if (argc == 4 && strcmp(argv[1], "-i") == 0) {
start_icon = argv[2];
}
if (argc == 1) {
printf("Usage: %s [-i ICON] FIFO\n", *argv);
printf("Listen to FIFO for system tray icon specifications\n");
printf("\n");
printf(" -i ICON\tUse the specified ICON when initializing\n");
printf("\n");
printf("Report bugs at https://github.com/jonhoo/mktrayicon\n");
return 0;
}
icon = create_tray_icon(start_icon);
reader = g_thread_new("watch_fifo", watch_fifo, argv[argc-1]);
gtk_main();
return 0;
}
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