[eog] Gestures work

[Gustavo Noronha Silva <gns src gnome org>]

commit 3ab0900706bb808446014f45e7ec182744c17ec5
Author: Gustavo Noronha Silva <kov debian org>
Date:   Thu Nov 5 09:40:55 2009 -0200

    Gestures work

 configure.ac           |    5 ++-
 src/eog-clutter-view.c |   36 +++++++++++++++++++++++++++++++++++
 src/eog-window.c       |   49 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 88 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 9979ec0..223b213 100644
--- a/configure.ac
+++ b/configure.ac
@@ -237,12 +237,13 @@ have_clutter=no
 if test "x$with_clutter" != "xno"; then
   PKG_CHECK_MODULES(CLUTTER,
                     clutter-1.0 >= $CLUTTER_REQUIRED dnl
-                    clutter-gtk-0.10,
+                    clutter-gtk-0.10
+                    clutter-gesture,
                     have_clutter=yes, have_clutter=no)
 fi
 if test "x$have_clutter" = "xyes"; then
   AC_DEFINE(WITH_CLUTTER_BACKEND, 1, [Clutter backend.])
-  EOG_MODULES="$EOG_MODULES clutter-1.0 >= $CLUTTER_REQUIRED clutter-gtk-0.10"
+  EOG_MODULES="$EOG_MODULES clutter-1.0 >= $CLUTTER_REQUIRED clutter-gtk-0.10 clutter-gesture"
 fi
 
 AM_CONDITIONAL([WITH_CLUTTER_BACKEND], [test "x$have_clutter" = "xyes"])
diff --git a/src/eog-clutter-view.c b/src/eog-clutter-view.c
index 1b30109..3ec1fc1 100644
--- a/src/eog-clutter-view.c
+++ b/src/eog-clutter-view.c
@@ -20,6 +20,7 @@
  */
 
 #include <clutter/clutter.h>
+#include <clutter-gesture/clutter-gesture.h>
 #include <clutter-gtk/clutter-gtk.h>
 
 #include "eog-clutter-view.h"
@@ -134,6 +135,29 @@ eog_clutter_view_iface_init (EogViewClass *iface)
 }
 
 static void
+eog_clutter_view_gesture_cb (ClutterGesture *gesture,
+                             ClutterGestureEvent *event,
+                             gpointer data)
+{
+	EogView *view = EOG_VIEW (data);
+
+	if (event->type == GESTURE_SLIDE) {
+		ClutterGestureSlideEvent *slide = (ClutterGestureSlideEvent*)event;
+
+		switch (slide->direction) {
+		case 3:
+			g_signal_emit_by_name (view, "next_image", 0);
+			break;
+		case 4:
+			g_signal_emit_by_name (view, "previous_image", 0);
+			break;
+		default:
+			g_debug ("DIRECTION: %d", slide->direction);
+		}
+	}
+}
+
+static void
 eog_clutter_view_init (EogClutterView *clutter_view)
 {
 	EogClutterViewPrivate *priv;
@@ -285,6 +309,7 @@ eog_clutter_view_set_image (EogView *view, EogImage *image)
 	EogClutterView *clutter_view;
 	EogClutterViewPrivate *priv;
 	GdkPixbuf *pixbuf;
+	ClutterGesture *gesture;
 	GError *error = NULL;
 
 	g_return_if_fail (EOG_IS_CLUTTER_VIEW (view));
@@ -325,9 +350,20 @@ eog_clutter_view_set_image (EogView *view, EogImage *image)
 		eog_clutter_view_set_zoom_fit (clutter_view);
 		eog_clutter_view_place_texture (clutter_view, CLUTTER_TEXTURE (priv->texture_in));
 
+		clutter_actor_set_reactive (priv->texture_in, TRUE);
+
 		clutter_behaviour_apply (priv->behaviour_in, priv->texture_in);
 		clutter_actor_set_opacity (priv->texture_in, 0);
 
+		gesture = clutter_gesture_new (CLUTTER_ACTOR (priv->texture_in));
+		clutter_gesture_set_gesture_mask (gesture, priv->texture_in,
+						  GESTURE_MASK_SLIDE | GESTURE_MASK_HOLD);
+
+		g_signal_connect (gesture, "gesture-slide-event",
+				  G_CALLBACK (eog_clutter_view_gesture_cb), view);
+		g_signal_connect (gesture, "gesture-hold-event",
+				  G_CALLBACK (eog_clutter_view_gesture_cb), view);
+
 		clutter_actor_show (priv->texture_in);
 	}
 
diff --git a/src/eog-window.c b/src/eog-window.c
index d3799ad..15c88b4 100644
--- a/src/eog-window.c
+++ b/src/eog-window.c
@@ -1726,6 +1726,44 @@ view_zoom_changed_cb (GtkWidget *widget, double zoom, gpointer user_data)
 }
 
 static void
+eog_window_activate_action (EogWindow *window, gchar *action_name)
+{
+	EogWindowPrivate *priv;
+	GtkAction *action;
+
+	priv = window->priv;
+
+	action = gtk_action_group_get_action (priv->actions_collection,
+					      action_name);
+
+        gtk_action_activate (action);
+}
+
+static void
+next_image_cb (GtkWidget *widget, gpointer user_data)
+{
+	EogWindow *window;
+
+	g_return_if_fail (EOG_IS_WINDOW (user_data));
+
+	window = EOG_WINDOW (user_data);
+
+	eog_window_activate_action (window, "GoNext");
+}
+
+static void
+previous_image_cb (GtkWidget *widget, gpointer user_data)
+{
+	EogWindow *window;
+
+	g_return_if_fail (EOG_IS_WINDOW (user_data));
+
+	window = EOG_WINDOW (user_data);
+
+	eog_window_activate_action (window, "GoPrevious");
+}
+
+static void
 eog_window_open_recent_cb (GtkAction *action, EogWindow *window)
 {
 	GtkRecentInfo *info;
@@ -4264,11 +4302,22 @@ eog_window_construct_ui (EogWindow *window)
 	priv->view = eog_scroll_view_new ();
 #endif
 	gtk_widget_set_size_request (GTK_WIDGET (priv->view), 100, 100);
+
 	g_signal_connect (G_OBJECT (priv->view),
 			  "zoom_changed",
 			  G_CALLBACK (view_zoom_changed_cb),
 			  window);
 
+	g_signal_connect (G_OBJECT (priv->view),
+			  "next_image",
+			  G_CALLBACK (next_image_cb),
+			  window);
+
+	g_signal_connect (G_OBJECT (priv->view),
+			  "previous_image",
+			  G_CALLBACK (previous_image_cb),
+			  window);
+
 	view_popup = gtk_ui_manager_get_widget (priv->ui_mgr, "/ViewPopup");
 	eog_view_set_popup (EOG_VIEW (priv->view),
 			    GTK_MENU (view_popup));