[aravis] viewer: show a notification whan saving image snapshot.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit d3ef366aa8a954f5a83da6b9f8a6cbca3fac2060
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Mon Jun 18 16:57:14 2012 +0200

    viewer: show a notification whan saving image snapshot.
    
    We really should not rely on libnotify, as it requires desktop
    with notification support. Perhaps a text displayed in the image area ?
    
    At least, I'd like to keep the quick save button, as it doesn't require user
    interaction other than a button click.

 configure.ac       |   17 ++++++++++++++---
 viewer/arvviewer.c |   35 +++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1192238..b54c613 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,6 +43,10 @@ AC_ARG_ENABLE(gtk3,
 	      [  --enable-gtk3           build viewer with gtk+-3.0],
 	      [enable_gtk3=$enableval],
 	      [enable_gtk3=no])
+AC_ARG_ENABLE(notify,
+	      [  --enable-notify         build viewer with libnotify],
+	      [enable_notify=$enableval],
+	      [enable_notify=no])
 AC_ARG_ENABLE(cpp_test,
 	      [  --enable-cpp-test       build c++ test],
 	      [enable_cpp_test=$enableval],
@@ -53,7 +57,6 @@ PKG_PROG_PKG_CONFIG([0.14])
 ARAVIS_REQUIREMENTS="glib-2.0 >= 2.26 gobject-2.0 gio-2.0 libxml-2.0 gthread-2.0"
 ARAVIS_GSTREAMER_REQUIREMENTS="gstreamer-base-0.10 >= 0.10.31 gstreamer-app-0.10 gstreamer-interfaces-0.10"
 
-
 PKG_CHECK_MODULES(ARAVIS, [$ARAVIS_REQUIREMENTS])
 
 AC_SUBST(ARAVIS_CFLAGS)
@@ -69,6 +72,13 @@ else
 fi
 AM_CONDITIONAL(ARAVIS_WITH_GTK3, test "x$enable_gtk3" = "xyes")
 
+if test "x$enable_notify" = "xyes"; then
+	PKG_CHECK_MODULES(Notify, "libnotify")
+	ARAVIS_VIEWER_REQUIREMENTS+=" libnotify"
+	AC_DEFINE([ARAVIS_WITH_NOTIFY], 1, [Use libnotify])
+fi
+AM_CONDITIONAL(ARAVIS_WITH_NOTIFY, test "x$enable_notify" = "xyes")
+
 build_viewer=no
 if test "x$enable_viewer" = "xyes"; then
 	PKG_CHECK_MODULES([ARAVIS_VIEWER], [$ARAVIS_VIEWER_REQUIREMENTS],
@@ -128,9 +138,10 @@ AC_OUTPUT
 echo ""
 echo "Configuration:"
 echo ""
-echo "	Build viewer:		$build_viewer"
-echo "	Build gstreamer plugin:	$build_gst_plugin"
 echo "	Compiler:		${CC}"
 echo "	Compiler flags:		${ARAVIS_CFLAGS}"
 echo "	Linker flags:		${ARAVIS_LIBS}"
 echo ""
+echo "	Build viewer:		$build_viewer"
+echo "	Build gstreamer plugin:	$build_gst_plugin"
+echo ""
diff --git a/viewer/arvviewer.c b/viewer/arvviewer.c
index 3c43aa8..2352df5 100644
--- a/viewer/arvviewer.c
+++ b/viewer/arvviewer.c
@@ -30,6 +30,9 @@
 #include <stdlib.h>
 #include <math.h>
 #include <glib/gi18n-lib.h>
+#ifdef ARAVIS_WITH_NOTIFY
+#include <libnotify/notify.h>
+#endif
 
 static char *arv_viewer_option_debug_domains = NULL;
 static gboolean arv_viewer_option_auto_socket_buffer = FALSE;
@@ -77,6 +80,10 @@ typedef struct {
 	guint exposure_update_event;
 
 	gulong video_window_xid;
+
+#ifdef ARAVIS_WITH_NOTIFY
+	NotifyNotification *notification;
+#endif
 } ArvViewer;
 
 double
@@ -378,6 +385,17 @@ arv_viewer_snapshot_cb (GtkButton *button, ArvViewer *viewer)
 	path = g_build_filename (g_get_user_special_dir (G_USER_DIRECTORY_PICTURES),
 				 "Aravis", filename, NULL);
 	g_file_set_contents (path, viewer->last_buffer->data, viewer->last_buffer->size, NULL);
+
+#ifdef ARAVIS_WITH_NOTIFY
+	if (viewer->notification) {
+		notify_notification_update (viewer->notification,
+					    "Snapshot saved to Image folder",
+					    path,
+					    "gtk-save");
+		notify_notification_show (viewer->notification, NULL);
+	}
+#endif
+
 	g_free (path);
 	g_free (filename);
 	g_free (date_string);
@@ -556,6 +574,11 @@ arv_viewer_free (ArvViewer *viewer)
 {
 	g_return_if_fail (viewer != NULL);
 
+#ifdef ARAVIS_WITH_NOTIFY
+	if (viewer->notification)
+		g_object_unref (viewer->notification);
+#endif
+
 	if (viewer->exposure_update_event > 0)
 		g_source_remove (viewer->exposure_update_event);
 	if (viewer->gain_update_event > 0)
@@ -648,6 +671,10 @@ arv_viewer_new (void)
 	viewer->auto_gain_clicked = g_signal_connect (viewer->auto_gain_toggle, "clicked",
 						      G_CALLBACK (arv_viewer_auto_gain_cb), viewer);
 
+#ifdef ARAVIS_WITH_NOTIFY
+	viewer->notification = notify_notification_new (NULL, NULL, NULL);
+#endif
+
 	return viewer;
 }
 
@@ -707,6 +734,10 @@ main (int argc,char *argv[])
 
 	arv_debug_enable (arv_viewer_option_debug_domains);
 
+#ifdef ARAVIS_WITH_NOTIFY
+	notify_init ("Aravis Viewer");
+#endif
+
 	viewer = arv_viewer_new ();
 
 	arv_viewer_update_device_list_cb (viewer);
@@ -714,6 +745,10 @@ main (int argc,char *argv[])
 
 	gtk_main ();
 
+#ifdef ARAVIS_WITH_NOTIFY
+	notify_uninit ();
+#endif
+
 	/* For debug purpose only */
 	arv_shutdown ();