[glade/csd: 1/3] Support CSD windows

[Matthias Clasen <matthiasc src gnome org>]

commit 6c613562965665731b749f8d5efa912bb6d30629
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Apr 26 02:14:15 2014 -0400

    Support CSD windows
    
    This patch adds support for the titlebar slot in GtkWindow.
    The rendering of windows with csd titlebar is somewhat broken
    in glade.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700914

 plugins/gtk+/glade-gtk-window.c |  135 +++++++++++++++++++++++++++++++++++++++
 plugins/gtk+/gtk+.xml.in        |   11 +++
 2 files changed, 146 insertions(+), 0 deletions(-)
---
diff --git a/plugins/gtk+/glade-gtk-window.c b/plugins/gtk+/glade-gtk-window.c
index 8b3767e..3e1d2b7 100644
--- a/plugins/gtk+/glade-gtk-window.c
+++ b/plugins/gtk+/glade-gtk-window.c
@@ -36,6 +36,49 @@
 #define GLADE_TAG_ACCEL_GROUPS "accel-groups"
 #define GLADE_TAG_ACCEL_GROUP  "group"
 
+#if !GTK_CHECK_VERSION (3,15,0)
+static void check_titlebar (GtkWidget *widget, gpointer data)
+{
+  GtkWidget **titlebar = data;
+  if (gtk_style_context_has_class (gtk_widget_get_style_context (widget), "titlebar"))
+    *titlebar = widget;
+}
+
+static GtkWidget *
+gtk_window_get_titlebar (GtkWindow *window)
+{
+  GtkWidget *titlebar = NULL;
+  gtk_container_forall (GTK_CONTAINER (window), check_titlebar, &titlebar);
+  return titlebar;
+}
+#endif
+
+static void
+glade_gtk_window_parse_finished (GladeProject * project, GObject * object)
+{
+  glade_widget_property_set (glade_widget_get_from_gobject (object),
+                             "use-csd", gtk_window_get_titlebar(GTK_WINDOW (object)) != NULL);
+}
+
+void
+glade_gtk_window_post_create (GladeWidgetAdaptor * adaptor,
+                              GObject * object, GladeCreateReason reason)
+{
+  GladeWidget *parent = glade_widget_get_from_gobject (object);
+  GladeProject *project = glade_widget_get_project (parent);
+
+  if (reason == GLADE_CREATE_LOAD)
+    {
+      g_signal_connect (project, "parse-finished",
+                        G_CALLBACK (glade_gtk_window_parse_finished),
+                        object);
+    }
+  else if (reason == GLADE_CREATE_USER)
+    {
+      gtk_container_add (GTK_CONTAINER (object), glade_placeholder_new ());
+    }
+}
+
 static void
 glade_gtk_window_read_accel_groups (GladeWidget * widget, GladeXmlNode * node)
 {
@@ -205,6 +248,98 @@ glade_gtk_window_set_property (GladeWidgetAdaptor * adaptor,
       else
        glade_widget_property_set_sensitive (gwidget, "icon", TRUE, NULL);
     }
+  else if (!strcmp (id, "use-csd"))
+    {
+      if (g_value_get_boolean (value))
+        {
+          GtkWidget *titlebar;
+
+          titlebar = gtk_window_get_titlebar (GTK_WINDOW (object));
+          if (!titlebar)
+            titlebar = glade_placeholder_new ();
+          g_object_set_data (G_OBJECT (titlebar), "special-child-type", "titlebar");
+          gtk_window_set_titlebar (GTK_WINDOW (object), titlebar);
+        }
+      else
+        gtk_window_set_titlebar (GTK_WINDOW (object), NULL);
+    }
   else
     GWA_GET_CLASS (GTK_TYPE_CONTAINER)->set_property (adaptor, object, id, value);
 }
+
+void
+glade_gtk_window_replace_child (GladeWidgetAdaptor * adaptor,
+                               GtkWidget * container,
+                               GtkWidget * current, GtkWidget * new_widget)
+{
+  gchar *special_child_type;
+
+  special_child_type = g_object_get_data (G_OBJECT (current), "special-child-type");
+
+  if (special_child_type && !strcmp (special_child_type, "titlebar"))
+    {
+      g_object_set_data (G_OBJECT (new_widget), "special-child-type", "titlebar");
+      gtk_window_set_titlebar (GTK_WINDOW (container), new_widget);
+      return;
+    }
+
+  /* Chain Up */
+  GWA_GET_CLASS
+      (GTK_TYPE_CONTAINER)->replace_child (adaptor,
+                                           G_OBJECT (container),
+                                           G_OBJECT (current),
+                                           G_OBJECT (new_widget));
+}
+
+void
+glade_gtk_window_add_child (GladeWidgetAdaptor * adaptor,
+                           GObject * object, GObject * child)
+{
+  GtkWidget *bin_child;
+  gchar *special_child_type;
+
+  special_child_type = g_object_get_data (child, "special-child-type");
+
+  if (special_child_type && !strcmp (special_child_type, "titlebar"))
+    {
+      gtk_window_set_titlebar (GTK_WINDOW (object), GTK_WIDGET (child));
+    }
+  else
+    {
+      /* Get a placeholder out of the way before adding the child */
+      bin_child = gtk_bin_get_child (GTK_BIN (object));
+      if (bin_child)
+        {
+          if (GLADE_IS_PLACEHOLDER (bin_child))
+            gtk_container_remove (GTK_CONTAINER (object), bin_child);
+          else
+            {
+              g_critical ("Cant add more than one widget to a GtkWindow");
+              return;
+            }
+        }
+      gtk_container_add (GTK_CONTAINER (object), GTK_WIDGET (child));
+    }
+
+}
+
+void
+glade_gtk_window_remove_child (GladeWidgetAdaptor * adaptor,
+                              GObject * object, GObject * child)
+{
+  gchar *special_child_type;
+  GtkWidget *placeholder;
+
+  placeholder = glade_placeholder_new ();
+  special_child_type = g_object_get_data (child, "special-child-type");
+  if (special_child_type && !strcmp (special_child_type, "titlebar"))
+    {
+      g_object_set_data (G_OBJECT (placeholder), "special-child-type", "titlebar");
+      gtk_window_set_titlebar (GTK_WINDOW (object), placeholder);
+    }
+  else
+    {
+      gtk_container_remove (GTK_CONTAINER (object), GTK_WIDGET (child));
+      gtk_container_add (GTK_CONTAINER (object), placeholder);
+    }
+}
diff --git a/plugins/gtk+/gtk+.xml.in b/plugins/gtk+/gtk+.xml.in
index bf5b006..4608f88 100644
--- a/plugins/gtk+/gtk+.xml.in
+++ b/plugins/gtk+/gtk+.xml.in
@@ -686,10 +686,15 @@
       </glade-widget-class>
       
       <glade-widget-class name="GtkWindow" generic-name="window" _title="Window" toplevel="True" 
default-width="440" default-height="250">
+        <post-create-function>glade_gtk_window_post_create</post-create-function>
         <read-widget-function>glade_gtk_window_read_widget</read-widget-function>
         <write-widget-function>glade_gtk_window_write_widget</write-widget-function>
         <create-editable-function>glade_gtk_window_create_editable</create-editable-function>
         <set-property-function>glade_gtk_window_set_property</set-property-function>
+        <add-child-function>glade_gtk_window_add_child</add-child-function>
+        <remove-child-function>glade_gtk_window_remove_child</remove-child-function>
+        <replace-child-function>glade_gtk_window_replace_child</replace-child-function>
+        <special-child-type>type</special-child-type>
         
         <properties> 
           <!-- Virtual accel-groups property to record accel groups -->
@@ -700,6 +705,12 @@
             </parameter-spec>
             <_tooltip>A list of accel groups to be added to this window</_tooltip>
           </property>
+          <!-- Virtual csd mode property -->
+          <property id="use-csd" name="CSD" visible="True" save="False">
+            <parameter-spec>
+              <type>GParamBoolean</type>
+            </parameter-spec>
+          </property>
           <property id="attached-to" since="3.4" ignore="True" custom-layout="True"/>
           <property id="startup-id" since="2.12" custom-layout="True"/>
           <property id="deletable" since="2.10" custom-layout="True"/>