[nautilus] floating-bar: make the stop smaller than normal buttons

[Carlos Soriano Sánchez <csoriano src gnome org>]

commit 6cd7ffc66571a2f6a9d26bc53fe0078e89d4e5a2
Author: Carlos Soriano <csoriano gnome org>
Date:   Mon Mar 7 21:03:19 2016 +0100

    floating-bar: make the stop smaller than normal buttons
    
    With the latest changes on gtk+ the button sizing changed and made
    the button in the floating bar taller.
    
    To fix it, remove the padding from the button.
    Also improve how the button is created using the "new" gtk+ functions.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763249

 src/nautilus-floating-bar.c   |   15 ++++++++-------
 src/resources/css/Adwaita.css |    4 ++--
 2 files changed, 10 insertions(+), 9 deletions(-)
---
diff --git a/src/nautilus-floating-bar.c b/src/nautilus-floating-bar.c
index da1bde0..7345f71 100644
--- a/src/nautilus-floating-bar.c
+++ b/src/nautilus-floating-bar.c
@@ -478,14 +478,15 @@ nautilus_floating_bar_add_action (NautilusFloatingBar *self,
                                  const gchar *icon_name,
                                  gint action_id)
 {
-       GtkWidget *w, *button;
-
-       w = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_MENU);
-       gtk_widget_show (w);
+       GtkWidget *button;
+       GtkStyleContext *context;
 
-       button = gtk_button_new ();
-       gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
-       gtk_button_set_image (GTK_BUTTON (button), w);
+       button = gtk_button_new_from_icon_name (icon_name, GTK_ICON_SIZE_MENU);
+       context = gtk_widget_get_style_context (button);
+       gtk_button_set_relief (button, GTK_RELIEF_NONE);
+       gtk_style_context_add_class (context, "circular");
+       gtk_style_context_add_class (context, "flat");
+       gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
        gtk_box_pack_end (GTK_BOX (self), button, FALSE, FALSE, 0);
        gtk_widget_show (button);
 
diff --git a/src/resources/css/Adwaita.css b/src/resources/css/Adwaita.css
index 8c79677..0d20f21 100644
--- a/src/resources/css/Adwaita.css
+++ b/src/resources/css/Adwaita.css
@@ -63,7 +63,7 @@
 
 /* Floating status bar */
 .floating-bar {
-  padding: 2px;
+  padding: 1px;
   background-color: @theme_base_color;
   border-width: 1px;
   border-style: solid solid none;
@@ -86,7 +86,7 @@
 }
 
 .floating-bar button {
-    padding: 4px;
+  padding: 0px;
 }
 
 .search-bar {