[gnome-builder] styling: override stackswitcher styling to remove linked and raised buttons

[Christian Hergert <chergert src gnome org>]

commit 84cfdf3769c3d8ab714731f0fc7ca5eed427e56a
Author: Christian Hergert <christian hergert me>
Date:   Wed Sep 10 03:33:21 2014 -0700

    styling: override stackswitcher styling to remove linked and raised buttons
    
    To match the mockups, these need to be flat and not linked. Sort of
    painful to do this in code, but seems to be the only way at the
    moment since we:
    
     * cant remove style classes from GtkBuilder
     * cant access the button children of a GtkStackSwitcher

 src/resources/ui/gb-workbench.ui |    1 +
 src/workbench/gb-workbench.c     |   27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/ui/gb-workbench.ui b/src/resources/ui/gb-workbench.ui
index fcd8b7c..5250b48 100644
--- a/src/resources/ui/gb-workbench.ui
+++ b/src/resources/ui/gb-workbench.ui
@@ -124,6 +124,7 @@
             <property name="stack">stack</property>
             <property name="orientation">vertical</property>
             <property name="border_width">3</property>
+            <property name="spacing">4</property>
           </object>
         </child>
         <child>
diff --git a/src/workbench/gb-workbench.c b/src/workbench/gb-workbench.c
index accb35c..18832c7 100644
--- a/src/workbench/gb-workbench.c
+++ b/src/workbench/gb-workbench.c
@@ -143,6 +143,31 @@ load_actions (GbWorkbench *workbench,
 }
 
 static void
+fixup_stack_switcher_buttons_func (GtkWidget *widget,
+                                   gpointer   user_data)
+{
+  GtkStyleContext *context;
+
+  g_assert (GTK_IS_RADIO_BUTTON (widget));
+
+  context = gtk_widget_get_style_context (widget);
+  gtk_style_context_add_class (context, GTK_STYLE_CLASS_FLAT);
+}
+
+static void
+fixup_stack_switcher_buttons (GtkStackSwitcher *switcher)
+{
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (switcher));
+  gtk_style_context_remove_class (context, GTK_STYLE_CLASS_LINKED);
+
+  gtk_container_forall (GTK_CONTAINER (switcher),
+                        (GtkCallback)fixup_stack_switcher_buttons_func,
+                        NULL);
+}
+
+static void
 gb_workbench_realize (GtkWidget *widget)
 {
   GbWorkbench *workbench = (GbWorkbench *)widget;
@@ -167,6 +192,8 @@ gb_workbench_constructed (GObject *object)
 
   priv = workbench->priv;
 
+  fixup_stack_switcher_buttons (priv->switcher);
+
   load_actions (workbench, GB_WORKSPACE (priv->editor));
   load_actions (workbench, GB_WORKSPACE (priv->devhelp));