[evince] Improve sidebar top option menu ui

[Carlos Garcia Campos <carlosgc src gnome org>]

commit fd17b92cabcac2521db85089ab4bbcdf2b1d350d
Author: Trinh Anh Ngoc <atw1990 gmail com>
Date:   Wed Jun 22 19:56:33 2016 +0700

    Improve sidebar top option menu ui
    
    Always center menu button and increase margins.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=767853

 shell/ev-sidebar.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/shell/ev-sidebar.c b/shell/ev-sidebar.c
index 3e14308..692b8d1 100644
--- a/shell/ev-sidebar.c
+++ b/shell/ev-sidebar.c
@@ -348,8 +348,8 @@ ev_sidebar_init (EvSidebar *ev_sidebar)
                                            G_TYPE_INT);
 
        /* top option menu */
-       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
-       gtk_container_set_border_width (GTK_CONTAINER (hbox), 2);
+       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+       gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
        ev_sidebar->priv->hbox = hbox;
        gtk_box_pack_start (GTK_BOX (ev_sidebar), hbox, FALSE, FALSE, 0);
        gtk_widget_show (hbox);
@@ -368,7 +368,7 @@ ev_sidebar_init (EvSidebar *ev_sidebar)
                          G_CALLBACK (ev_sidebar_select_button_key_press_cb),
                          ev_sidebar);
 
-       select_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+       select_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
 
        ev_sidebar->priv->label = gtk_label_new ("");
        gtk_box_pack_start (GTK_BOX (select_hbox),
@@ -383,7 +383,7 @@ ev_sidebar_init (EvSidebar *ev_sidebar)
        gtk_container_add (GTK_CONTAINER (ev_sidebar->priv->select_button), select_hbox);
        gtk_widget_show (select_hbox);
 
-       gtk_box_pack_start (GTK_BOX (hbox), ev_sidebar->priv->select_button, TRUE, TRUE, 0);
+       gtk_box_set_center_widget (GTK_BOX (hbox), ev_sidebar->priv->select_button);
        gtk_widget_show (ev_sidebar->priv->select_button);
 
         close_button = gtk_button_new_from_icon_name ("window-close-symbolic", GTK_ICON_SIZE_BUTTON);