[gthumb] show the tools menu button in viewer mode as well

[Paolo Bacchilega <paobac src gnome org>]

commit 30749dbc4c82966ae66e9a757bc535a95011ed7f
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Thu Jun 29 07:11:15 2017 +0200

    show the tools menu button in viewer mode as well

 extensions/list_tools/callbacks.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/extensions/list_tools/callbacks.c b/extensions/list_tools/callbacks.c
index a1269c7..87fc26b 100644
--- a/extensions/list_tools/callbacks.c
+++ b/extensions/list_tools/callbacks.c
@@ -176,6 +176,15 @@ list_tools__gth_browser_construct_cb (GthBrowser *browser)
        gtk_widget_show (button);
        gtk_box_pack_start (GTK_BOX (gth_browser_get_headerbar_section (browser, 
GTH_BROWSER_HEADER_SECTION_BROWSER_TOOLS)), button, FALSE, FALSE, 0);
 
+       /* viewer edit */
+
+       button = _gtk_menu_button_new_for_header_bar ("tools-symbolic");
+       g_signal_connect (button, "toggled", G_CALLBACK (tools_menu_button_toggled_cb), data);
+       gtk_widget_set_tooltip_text (button, _("Tools"));
+       gtk_menu_button_set_menu_model (GTK_MENU_BUTTON (button), menu);
+       gtk_widget_show (button);
+       gtk_box_pack_end (GTK_BOX (gth_browser_get_headerbar_section (browser, 
GTH_BROWSER_HEADER_SECTION_VIEWER_EDIT)), button, FALSE, FALSE, 0);
+
        g_object_unref (builder);
 }