tray_linux.c

#include <gtk/gtk.h>
#include <libappindicator/app-indicator.h>

#include "tray.h"

#define TRAY_APPINDICATOR_ID "tray-id"

static AppIndicator *indicator = NULL;
static int loop_result = 0;

static void _tray_menu_cb(GtkMenuItem *item, gpointer data) {
    (void)item;
    struct tray_menu *m = (struct tray_menu *)data;
    m->cb(m);
}

static GtkMenuShell *_tray_menu(struct tray_menu *m) {
    GtkMenuShell *menu = (GtkMenuShell *)gtk_menu_new();
    for (; m != NULL && m->text != NULL; m++) {
        GtkWidget *item;
        if (strcmp(m->text, "-") == 0) {
            item = gtk_separator_menu_item_new();
        } else {
            if (m->submenu != NULL) {
                item = gtk_menu_item_new_with_label(m->text);
                gtk_menu_item_set_submenu(GTK_MENU_ITEM(item),
                        GTK_WIDGET(_tray_menu(m->submenu)));
            } else if (m->checked) {
                item = gtk_check_menu_item_new_with_label(m->text);
                gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), !!m->checked);
            } else { // TODO: this is still not optimal as this means a checked item, will not have the greyed out checkbox
                item = gtk_menu_item_new_with_label(m->text);
          }
            gtk_widget_set_sensitive(item, !m->disabled);
            if (m->cb != NULL) {
                g_signal_connect(item, "activate", G_CALLBACK(_tray_menu_cb), m);
            }
        }
        gtk_widget_show(item);
        gtk_menu_shell_append(menu, item);
    }
    return menu;
}

int tray_init(struct tray *tray) {
    if (gtk_init_check(0, NULL) == FALSE) {
        return -1;
    }
    indicator = app_indicator_new(TRAY_APPINDICATOR_ID, tray->icon.data,
            APP_INDICATOR_CATEGORY_APPLICATION_STATUS);
    app_indicator_set_status(indicator, APP_INDICATOR_STATUS_ACTIVE);
    tray_update(tray);
    return 0;
}

int tray_loop(int blocking) {
    gtk_main_iteration_do(blocking);
    return loop_result;
}

void tray_update(struct tray *tray) {
    app_indicator_set_icon(indicator, tray->icon.data);
    // GTK is all about reference counting, so previous menu should be destroyed
    // here
    app_indicator_set_menu(indicator, GTK_MENU(_tray_menu(tray->menu)));
}

void tray_exit() { loop_result = -1; }