[metacity] libmetacity: don't use GtkSettings to change gtk-theme-name

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 06848ada66d821a7bdde18751f050619e4c136d6
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Feb 4 10:32:02 2016 +0200

    libmetacity: don't use GtkSettings to change gtk-theme-name

 libmetacity/meta-style-info.c |    9 +------
 libmetacity/meta-style-info.h |    3 +-
 libmetacity/meta-theme-gtk.c  |   42 +++++++++++++++++++++++++---------------
 libmetacity/meta-theme.c      |   35 +++++++++++++++++++++++++++++++--
 4 files changed, 62 insertions(+), 27 deletions(-)
---
diff --git a/libmetacity/meta-style-info.c b/libmetacity/meta-style-info.c
index 5eb102b..d619422 100644
--- a/libmetacity/meta-style-info.c
+++ b/libmetacity/meta-style-info.c
@@ -92,22 +92,17 @@ create_style_context (GtkStyleContext *parent,
 }
 
 MetaStyleInfo *
-meta_style_info_new (const gchar *variant,
+meta_style_info_new (const gchar *theme_name,
+                     const gchar *variant,
                      gboolean     composited)
 {
   MetaStyleInfo *style_info;
   GtkCssProvider *provider;
-  char *theme_name;
-
-  g_object_get (gtk_settings_get_default (),
-                "gtk-theme-name", &theme_name,
-                NULL);
 
   if (theme_name && *theme_name)
     provider = gtk_css_provider_get_named (theme_name, variant);
   else
     provider = gtk_css_provider_get_default ();
-  g_free (theme_name);
 
   style_info = g_new0 (MetaStyleInfo, 1);
   style_info->refcount = 1;
diff --git a/libmetacity/meta-style-info.h b/libmetacity/meta-style-info.h
index a4b826a..5356087 100644
--- a/libmetacity/meta-style-info.h
+++ b/libmetacity/meta-style-info.h
@@ -41,7 +41,8 @@ typedef struct
   GtkStyleContext *styles[META_STYLE_ELEMENT_LAST];
 } MetaStyleInfo;
 
-MetaStyleInfo *meta_style_info_new          (const gchar    *variant,
+MetaStyleInfo *meta_style_info_new          (const gchar    *theme_name,
+                                             const gchar    *variant,
                                              gboolean        composited);
 
 MetaStyleInfo *meta_style_info_ref          (MetaStyleInfo  *style_info);
diff --git a/libmetacity/meta-theme-gtk.c b/libmetacity/meta-theme-gtk.c
index 866bd96..950514e 100644
--- a/libmetacity/meta-theme-gtk.c
+++ b/libmetacity/meta-theme-gtk.c
@@ -26,27 +26,39 @@
 
 struct _MetaThemeGtk
 {
-  MetaThemeImpl parent;
+  MetaThemeImpl  parent;
+
+  gchar         *name;
 };
 
 G_DEFINE_TYPE (MetaThemeGtk, meta_theme_gtk, META_TYPE_THEME_IMPL)
 
+static void
+meta_theme_gtk_finalize (GObject *object)
+{
+  MetaThemeGtk *gtk;
+
+  gtk = META_THEME_GTK (object);
+
+  g_free (gtk->name);
+
+  G_OBJECT_CLASS (meta_theme_gtk_parent_class)->finalize (object);
+}
+
 static gboolean
 meta_theme_gtk_load (MetaThemeImpl  *impl,
                      const gchar    *name,
                      GError        **error)
 {
-  GtkSettings *settings;
+  MetaThemeGtk *gtk;
   MetaFrameType type;
 
   g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
 
-  settings = gtk_settings_get_default ();
-
-  if (settings == NULL)
-    return FALSE;
+  gtk = META_THEME_GTK (impl);
 
-  g_object_set (settings, "gtk-theme-name", name, NULL);
+  g_free (gtk->name);
+  gtk->name = g_strdup (name);
 
   for (type = 0; type < META_FRAME_TYPE_LAST; type++)
     {
@@ -126,17 +138,11 @@ meta_theme_gtk_load (MetaThemeImpl  *impl,
 static gchar *
 meta_theme_gtk_get_name (MetaThemeImpl *impl)
 {
-  GtkSettings *settings;
-  gchar *name;
+  MetaThemeGtk *gtk;
 
-  settings = gtk_settings_get_default ();
+  gtk = META_THEME_GTK (impl);
 
-  if (settings == NULL)
-    return NULL;
-
-  g_object_get (settings, "gtk-theme-name", &name, NULL);
-
-  return name;
+  return gtk->name;
 }
 
 static void
@@ -1022,10 +1028,14 @@ meta_theme_gtk_draw_frame (MetaThemeImpl           *impl,
 static void
 meta_theme_gtk_class_init (MetaThemeGtkClass *gtk_class)
 {
+  GObjectClass *object_class;
   MetaThemeImplClass *impl_class;
 
+  object_class = G_OBJECT_CLASS (gtk_class);
   impl_class = META_THEME_IMPL_CLASS (gtk_class);
 
+  object_class->finalize = meta_theme_gtk_finalize;
+
   impl_class->load = meta_theme_gtk_load;
   impl_class->get_name = meta_theme_gtk_get_name;
   impl_class->get_frame_borders = meta_theme_gtk_get_frame_borders;
diff --git a/libmetacity/meta-theme.c b/libmetacity/meta-theme.c
index 66eb854..db8ce60 100644
--- a/libmetacity/meta-theme.c
+++ b/libmetacity/meta-theme.c
@@ -37,6 +37,7 @@ struct _MetaTheme
 
   PangoFontDescription *titlebar_font;
 
+  gchar                *theme_name;
   GHashTable           *variants;
 };
 
@@ -97,6 +98,8 @@ meta_theme_finalize (GObject *object)
       theme->titlebar_font = NULL;
     }
 
+  g_free (theme->theme_name);
+
   G_OBJECT_CLASS (meta_theme_parent_class)->finalize (object);
 }
 
@@ -206,6 +209,25 @@ meta_theme_load (MetaTheme    *theme,
                  const gchar  *name,
                  GError      **error)
 {
+  g_free (theme->theme_name);
+
+  if (theme->type == META_THEME_TYPE_GTK)
+    {
+      theme->theme_name = g_strdup (name);
+    }
+  else if (theme->type == META_THEME_TYPE_METACITY)
+    {
+      GtkSettings *settings;
+
+      settings = gtk_settings_get_default ();
+
+      g_object_get (settings, "gtk-theme-name", &theme->theme_name, NULL);
+    }
+  else
+    {
+      g_assert_not_reached ();
+    }
+
   return META_THEME_IMPL_GET_CLASS (theme->impl)->load (theme->impl, name,
                                                         error);
 }
@@ -226,9 +248,15 @@ meta_theme_style_invalidate (MetaTheme *theme)
       variant = g_strdup ((gchar *) l->data);
 
       if (g_strcmp0 (variant, "default") == 0)
-        style_info = meta_style_info_new (NULL, theme->composited);
+        {
+          style_info = meta_style_info_new (theme->theme_name, NULL,
+                                            theme->composited);
+        }
       else
-        style_info = meta_style_info_new (variant, theme->composited);
+        {
+          style_info = meta_style_info_new (theme->theme_name, variant,
+                                            theme->composited);
+        }
 
       g_hash_table_insert (theme->variants, variant, style_info);
     }
@@ -249,7 +277,8 @@ meta_theme_get_style_info (MetaTheme   *theme,
 
   if (style_info == NULL)
     {
-      style_info = meta_style_info_new (variant, theme->composited);
+      style_info = meta_style_info_new (theme->theme_name, variant,
+                                        theme->composited);
 
       g_hash_table_insert (theme->variants, g_strdup (variant), style_info);
     }