commit f027ece1933ce3b817ff58a606e616b25a95f535
Author: Serge A. Zaitsev <zaitsev.serge@gmail.com>
Date:   Sat Jan 7 21:08:46 2017 +0200

    initial commit, gtk/appindicator implementation draft

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d1f1de3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.o
+example
+example.exe
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..aa7cdf1
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,28 @@
+ifeq ($(OS),Windows_NT)
+	TRAY_CFLAGS :=
+	TRAY_LDFLAGS :=
+else
+	UNAME_S := $(shell uname -s)
+	ifeq ($(UNAME_S),Linux)
+	TRAY_CFLAGS := -DTRAY_APPINDICATOR=1 $(shell pkg-config --cflags appindicator3-0.1)
+	TRAY_LDFLAGS := $(shell pkg-config --libs appindicator3-0.1)
+endif
+ifeq ($(UNAME_S),Darwin)
+	TRAY_CFLAGS := -DTRAY_COCOA=1 -x objective-c -framework Cocoa $< -o $@
+	TRAY_LDFLAGS :=
+endif
+endif
+
+
+CFLAGS := -g -Wall $(TRAY_CFLAGS)
+LDFLAGS := -g $(TRAY_LDFLAGS)
+
+all: example
+
+example: example.o
+	$(CC) $^ $(LDFLAGS) -o $@
+	
+example.o: example.c tray.h
+
+clean:
+	rm -f example.o example example.exe
diff --git a/example.c b/example.c
new file mode 100644
index 0000000..8121a0b
--- /dev/null
+++ b/example.c
@@ -0,0 +1,33 @@
+#include <string.h>
+
+#include "tray.h"
+
+static struct tray tray;
+
+static void hello_cb(struct tray_menu *item) {
+	if (strcmp(tray.icon, "indicator-messages") == 0) {
+		tray.icon = "indicator-messages-new";
+	} else {
+		tray.icon = "indicator-messages";
+	}
+	tray_update(&tray);
+}
+
+static void quit_cb(struct tray_menu *item) {
+	tray_exit();
+}
+
+static struct tray tray = {
+	.icon = "indicator-messages-new",
+	.menu = (struct tray_menu[]){
+		{NULL, "Hello", 0, hello_cb, NULL},
+		{NULL, "Quit", 0, quit_cb, NULL},
+		{NULL, NULL, 0, NULL, NULL}
+	},
+};
+
+int main(int argc, char *argv[]) {
+	tray_init(&tray);
+	while (tray_loop(1) == 0);
+	return 0;
+}
diff --git a/tray.h b/tray.h
new file mode 100644
index 0000000..24207e2
--- /dev/null
+++ b/tray.h
@@ -0,0 +1,82 @@
+#ifndef TRAY_H
+#define TRAY_H
+
+struct tray_menu;
+
+struct tray {
+	char *icon;
+	char *tooltip;
+	struct tray_menu *menu;
+};
+
+struct tray_menu {
+	char *icon;
+	char *text; /* label */
+	int flags;
+
+	void (*cb)(struct tray_menu *);
+	void *context;
+};
+
+static void tray_update(struct tray *tray);
+
+#if defined(TRAY_APPINDICATOR)
+
+#include <gtk/gtk.h>
+#include <libappindicator/app-indicator.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) {
+	struct tray_menu *m = (struct tray_menu *) data;
+	m->cb(m);
+}
+
+static int tray_init(struct tray *tray) {
+	if (gtk_init_check(0, NULL) == FALSE) {
+		return -1;
+	}
+	indicator = app_indicator_new(TRAY_APPINDICATOR_ID, tray->icon,
+			APP_INDICATOR_CATEGORY_APPLICATION_STATUS);
+	app_indicator_set_status(indicator, APP_INDICATOR_STATUS_ACTIVE);
+	tray_update(tray);
+	return 0;
+}
+
+static int tray_loop(int blocking) {
+	gtk_main_iteration_do(blocking);
+	return loop_result;
+}
+
+static void tray_update(struct tray *tray) {
+  struct tray_menu *m;
+
+	app_indicator_set_icon(indicator, tray->icon);
+  GtkMenuShell *gtk_menu = (GtkMenuShell *)gtk_menu_new();
+  for (m = tray->menu;; m++) {
+    if (m->text == NULL) {
+      break;
+    }
+    GtkWidget *item = gtk_menu_item_new_with_label(m->text);
+    gtk_widget_show(item);
+    gtk_menu_shell_append(GTK_MENU_SHELL(gtk_menu), item);
+		if (m->cb != NULL) {
+			g_signal_connect(item, "activate", G_CALLBACK(_tray_menu_cb), m);
+		}
+  }
+  app_indicator_set_menu(indicator, GTK_MENU(gtk_menu));
+}
+
+static void tray_exit() {
+	loop_result = -1;
+}
+
+#elif defined(TRAY_APPKIT)
+#elif defined(TRAY_WINAPI)
+#else
+#endif
+
+#endif /* TRAY_H */