application, preview-view: Hook up saturation to a GAction

src/photos-application.c

@@ -81,6 +81,7 @@ struct _PhotosApplicationPrivate
   GSimpleAction *open_action;
   GSimpleAction *print_action;
   GSimpleAction *properties_action;
+  GSimpleAction *saturation_action;
   GSimpleAction *save_action;
   GSimpleAction *search_action;
   GSimpleAction *search_match_action;
@@ -277,6 +278,7 @@ photos_application_actions_update (PhotosApplication *self)
   g_simple_action_set_enabled (priv->edit_cancel_action, enable);
   g_simple_action_set_enabled (priv->edit_done_action, enable);
   g_simple_action_set_enabled (priv->insta_action, enable);
+  g_simple_action_set_enabled (priv->saturation_action, enable);
   g_simple_action_set_enabled (priv->sharpen_action, enable);
   g_simple_action_set_enabled (priv->undo_action, enable);
 
@@ -1417,6 +1419,9 @@ photos_application_startup (GApplication *application)
   g_action_map_add_action (G_ACTION_MAP (self), G_ACTION (action));
   g_object_unref (action);
 
+  priv->saturation_action = g_simple_action_new ("saturation-current", G_VARIANT_TYPE_DOUBLE);
+  g_action_map_add_action (G_ACTION_MAP (self), G_ACTION (priv->saturation_action));
+
   priv->save_action = g_simple_action_new ("save-current", NULL);
   g_signal_connect_swapped (priv->save_action, "activate", G_CALLBACK (photos_application_save), self);
   g_action_map_add_action (G_ACTION_MAP (self), G_ACTION (priv->save_action));
@@ -1560,6 +1565,7 @@ photos_application_dispose (GObject *object)
   g_clear_object (&priv->open_action);
   g_clear_object (&priv->print_action);
   g_clear_object (&priv->properties_action);
+  g_clear_object (&priv->saturation_action);
   g_clear_object (&priv->save_action);
   g_clear_object (&priv->search_action);
   g_clear_object (&priv->search_match_action);

src/photos-preview-view.c

 /*
  * Photos - access, organize and share your photos on GNOME
- * Copyright © 2013, 2014, 2015 Red Hat, Inc.
+ * Copyright © 2013, 2014, 2015, 2016 Red Hat, Inc.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -400,6 +400,22 @@ photos_preview_view_insta (PhotosPreviewView *self, GVariant *parameter)
 }
 
 
+static void
+photos_preview_view_saturation (PhotosPreviewView *self, GVariant *parameter)
+{
+  PhotosBaseItem *item;
+  gfloat scale;
+
+  item = PHOTOS_BASE_ITEM (photos_base_manager_get_active_object (self->priv->item_mngr));
+  if (item == NULL)
+    return;
+
+  scale = (gfloat) g_variant_get_double (parameter);
+  photos_base_item_operation_add (item, "photos:saturation", "scale", scale, NULL);
+  photos_base_item_process_async (item, NULL, photos_preview_view_process, self);
+}
+
+
 static void
 photos_preview_view_sharpen (PhotosPreviewView *self, GVariant *parameter)
 {
@@ -641,6 +657,13 @@ photos_preview_view_init (PhotosPreviewView *self)
   action = g_action_map_lookup_action (G_ACTION_MAP (app), "load-previous");
   g_signal_connect_swapped (action, "activate", G_CALLBACK (photos_preview_view_navigate_previous), self);
 
+  action = g_action_map_lookup_action (G_ACTION_MAP (app), "saturation-current");
+  g_signal_connect_object (action,
+                           "activate",
+                           G_CALLBACK (photos_preview_view_saturation),
+                           self,
+                           G_CONNECT_SWAPPED);
+
   action = g_action_map_lookup_action (G_ACTION_MAP (app), "sharpen-current");
   g_signal_connect_object (action, "activate", G_CALLBACK (photos_preview_view_sharpen), self, G_CONNECT_SWAPPED);