[libdazzle/wip/exalm/idle] css-provider: Apply changes immediately

[Alexander Mikhaylenko <alexm src gnome org>]

commit 1084fb23207ea98e5c8c96ee38a016a2e379cff8
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Wed Nov 10 03:24:51 2021 +0500

    css-provider: Apply changes immediately
    
    While queueing may save updates if multiple things are being changed
    at the same time, those occasions are fairly rare, and scheduling the
    update causes it to happen one frame later than needed. If the app
    takes a while to redraw (e.g. Epiphany), potentially a lot later.
    
    See https://gitlab.gnome.org/GNOME/epiphany/-/issues/1607

 src/theming/dzl-css-provider.c | 31 ++-----------------------------
 1 file changed, 2 insertions(+), 29 deletions(-)
---
diff --git a/src/theming/dzl-css-provider.c b/src/theming/dzl-css-provider.c
index 10b942c..72c3fa4 100644
--- a/src/theming/dzl-css-provider.c
+++ b/src/theming/dzl-css-provider.c
@@ -29,7 +29,6 @@ struct _DzlCssProvider
 {
   GtkCssProvider  parent_instance;
   gchar          *base_path;
-  guint           queued_update;
 };
 
 G_DEFINE_TYPE (DzlCssProvider, dzl_css_provider, GTK_TYPE_CSS_PROVIDER)
@@ -151,31 +150,6 @@ dzl_css_provider_update (DzlCssProvider *self)
   load_resource (self, resource_path);
 }
 
-static gboolean
-dzl_css_provider_do_update (gpointer user_data)
-{
-  DzlCssProvider *self = user_data;
-
-  g_assert (DZL_IS_CSS_PROVIDER (self));
-
-  self->queued_update = 0;
-  dzl_css_provider_update (self);
-
-  return G_SOURCE_REMOVE;
-}
-
-static void
-dzl_css_provider_queue_update (DzlCssProvider *self)
-{
-  g_assert (DZL_IS_CSS_PROVIDER (self));
-
-  if (self->queued_update == 0)
-    self->queued_update = g_idle_add_full (G_PRIORITY_LOW,
-                                           dzl_css_provider_do_update,
-                                           g_object_ref (self),
-                                           g_object_unref);
-}
-
 static void
 dzl_css_provider__settings_notify_gtk_theme_name (DzlCssProvider *self,
                                                  GParamSpec    *pspec,
@@ -183,7 +157,7 @@ dzl_css_provider__settings_notify_gtk_theme_name (DzlCssProvider *self,
 {
   g_assert (DZL_IS_CSS_PROVIDER (self));
 
-  dzl_css_provider_queue_update (self);
+  dzl_css_provider_update (self);
 }
 
 static void
@@ -193,7 +167,7 @@ dzl_css_provider__settings_notify_gtk_application_prefer_dark_theme (DzlCssProvi
 {
   g_assert (DZL_IS_CSS_PROVIDER (self));
 
-  dzl_css_provider_queue_update (self);
+  dzl_css_provider_update (self);
 }
 
 static void
@@ -254,7 +228,6 @@ dzl_css_provider_finalize (GObject *object)
   DzlCssProvider *self = (DzlCssProvider *)object;
 
   g_clear_pointer (&self->base_path, g_free);
-  dzl_clear_source (&self->queued_update);
 
   G_OBJECT_CLASS (dzl_css_provider_parent_class)->finalize (object);
 }