[gtk/wip/matthiasc/css-values] css: Re-add a lost special case

[Matthias Clasen <matthiasc src gnome org>]

commit 08b6588317eb895427b1997bb0f7c369068ffe7c
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 13 07:34:08 2020 -0500

    css: Re-add a lost special case
    
    When the border-style special cases were moved in
    c687f485fdd0a, the one for outline-width was lost.
    
    Make the code more compact, and bring the special
    case back.

 gtk/gtkcssstaticstyle.c | 55 ++++++++++++++-----------------------------------
 1 file changed, 15 insertions(+), 40 deletions(-)
---
diff --git a/gtk/gtkcssstaticstyle.c b/gtk/gtkcssstaticstyle.c
index e4439dcce1..e702953ba0 100644
--- a/gtk/gtkcssstaticstyle.c
+++ b/gtk/gtkcssstaticstyle.c
@@ -215,43 +215,23 @@ gtk_css_static_style_compute_value (GtkCssStaticStyle *style,
   switch (id)
     {
       /* We have them ordered in gtkcssstylepropertyimpl.c accordingly, so the
-       * border styles are already computed when we compute the border widths */
+       * border styles are already computed when we compute the border widths.
+       *
+       * Note that we rely on ..._STYLE == ..._WIDTH - 1 here.
+       */
       case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
-        border_style = _gtk_css_border_style_value_get (gtk_css_style_get_value ((GtkCssStyle *)style,
-                                                                                 
GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
-        if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
-          {
-            gtk_css_static_style_set_value (style, id, gtk_css_dimension_value_new (0, GTK_CSS_NUMBER), 
section);
-            return;
-          }
-        break;
       case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
-        border_style = _gtk_css_border_style_value_get (gtk_css_style_get_value ((GtkCssStyle *)style,
-                                                                                 
GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
-        if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
-          {
-            gtk_css_static_style_set_value (style, id, gtk_css_dimension_value_new (0, GTK_CSS_NUMBER), 
section);
-            return;
-          }
-        break;
       case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
-        border_style = _gtk_css_border_style_value_get (gtk_css_style_get_value ((GtkCssStyle *)style,
-                                                                                 
GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
-        if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
-          {
-            gtk_css_static_style_set_value (style, id, gtk_css_dimension_value_new (0, GTK_CSS_NUMBER), 
section);
-            return;
-          }
-        break;
       case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
-        border_style = _gtk_css_border_style_value_get (gtk_css_style_get_value ((GtkCssStyle *)style,
-                                                                                 
GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
+      case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
+        border_style = _gtk_css_border_style_value_get (gtk_css_style_get_value ((GtkCssStyle *)style, id - 
1));
         if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
           {
             gtk_css_static_style_set_value (style, id, gtk_css_dimension_value_new (0, GTK_CSS_NUMBER), 
section);
             return;
           }
         break;
+
       default:
         /* Go ahead */
         break;
@@ -263,23 +243,18 @@ gtk_css_static_style_compute_value (GtkCssStaticStyle *style,
    * by following this pseudo-algorithm:
    * 1) Identify all declarations that apply to the element
    */
-  if (specified == NULL)
+  if (specified)
     {
-      GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
-
-      if (parent_style && _gtk_css_style_property_is_inherit (prop))
-        {
-          /* Just take the style from the parent */
-          value = _gtk_css_value_ref (gtk_css_style_get_value (parent_style, id));
-        }
-      else
-        {
-          value = _gtk_css_initial_value_new_compute (id, provider, (GtkCssStyle *)style, parent_style);
-        }
+      value = _gtk_css_value_compute (specified, id, provider, (GtkCssStyle *)style, parent_style);
+    }
+  else if (parent_style && _gtk_css_style_property_is_inherit (_gtk_css_style_property_lookup_by_id (id)))
+    {
+      /* Just take the style from the parent */
+      value = _gtk_css_value_ref (gtk_css_style_get_value (parent_style, id));
     }
   else
     {
-      value = _gtk_css_value_compute (specified, id, provider, (GtkCssStyle *)style, parent_style);
+      value = _gtk_css_initial_value_new_compute (id, provider, (GtkCssStyle *)style, parent_style);
     }
 
   gtk_css_static_style_set_value (style, id, value, section);