[gtk/css-lookup-caching: 14/26] Pass a lookup to gtk_css_static_style_new_compute

[Matthias Clasen <matthiasc src gnome org>]

commit 40684ca4aef1ca61833fc6cc51ab42caab4c55c6
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Feb 10 19:15:44 2020 -0500

    Pass a lookup to gtk_css_static_style_new_compute
    
    Allow passing a lookup to gtk_css_static_Style_new_compute
    to bypass the matching and just resolve the style based
    on that lookup.
    
    Update all callers to pass NULL for now.

 gtk/gtkcssnode.c               |  1 +
 gtk/gtkcssstaticstyle.c        | 25 ++++++++++++++++---------
 gtk/gtkcssstaticstyleprivate.h |  1 +
 3 files changed, 18 insertions(+), 9 deletions(-)
---
diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index 4932447955..837f364af0 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -385,6 +385,7 @@ gtk_css_node_create_style (GtkCssNode                   *cssnode,
   style = gtk_css_static_style_new_compute (gtk_css_node_get_style_provider (cssnode),
                                             filter,
                                             cssnode,
+                                            NULL,
                                             style_change);
 
   store_in_global_parent_cache (cssnode, decl, style);
diff --git a/gtk/gtkcssstaticstyle.c b/gtk/gtkcssstaticstyle.c
index a71a47d0b5..04c4984183 100644
--- a/gtk/gtkcssstaticstyle.c
+++ b/gtk/gtkcssstaticstyle.c
@@ -707,6 +707,7 @@ gtk_css_static_style_get_default (void)
       default_style = gtk_css_static_style_new_compute (GTK_STYLE_PROVIDER (settings),
                                                         &filter,
                                                         NULL,
+                                                        NULL,
                                                         0);
       g_object_set_data_full (G_OBJECT (settings), I_("gtk-default-style"),
                               default_style, clear_default_style);
@@ -993,20 +994,26 @@ GtkCssStyle *
 gtk_css_static_style_new_compute (GtkStyleProvider             *provider,
                                   const GtkCountingBloomFilter *filter,
                                   GtkCssNode                   *node,
+                                  GtkCssLookup                 *lookup,
                                   GtkCssChange                  change)
 {
   GtkCssStaticStyle *result;
-  GtkCssLookup *lookup;
   GtkCssNode *parent;
 
-  lookup = gtk_css_lookup_new ();
-
-  if (node)
-    gtk_style_provider_lookup (provider,
-                               filter,
-                               node,
-                               lookup,
-                               change == 0 ? &change : NULL);
+  if (lookup != NULL && change != 0)
+    {
+      gtk_css_lookup_ref (lookup);
+    }
+  else
+    {
+      lookup = gtk_css_lookup_new ();
+      if (node)
+        gtk_style_provider_lookup (provider,
+                                   filter,
+                                   node,
+                                   lookup,
+                                   change == 0 ? &change : NULL);
+    }
 
   result = g_object_new (GTK_TYPE_CSS_STATIC_STYLE, NULL);
 
diff --git a/gtk/gtkcssstaticstyleprivate.h b/gtk/gtkcssstaticstyleprivate.h
index 0244c8ee44..a3b62f59b1 100644
--- a/gtk/gtkcssstaticstyleprivate.h
+++ b/gtk/gtkcssstaticstyleprivate.h
@@ -58,6 +58,7 @@ GtkCssStyle *           gtk_css_static_style_get_default        (void);
 GtkCssStyle *           gtk_css_static_style_new_compute        (GtkStyleProvider               *provider,
                                                                  const GtkCountingBloomFilter   *filter,
                                                                  GtkCssNode                     *node,
+                                                                 GtkCssLookup                   *lookup,
                                                                  GtkCssChange                    change);
 GtkCssChange            gtk_css_static_style_get_change         (GtkCssStaticStyle              *style);
 GtkCssLookup *          gtk_css_static_style_get_lookup         (GtkCssStaticStyle              *style);