[gtk/label-double-focus: 1/2] label: Improve link styling

[Matthias Clasen <matthiasc src gnome org>]

commit e3b9dfef1cb57aada63e4d5128e5fa358afaf92d
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Apr 9 21:15:30 2020 -0400

    label: Improve link styling
    
    Add a .link style class on labels that contain links,
    so we can avoid the focus outline around the label
    when individual links are focused, and use the link
    node when rendering the focus on links.

 gtk/gtklabel.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 42ccc00b3f..1006756743 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -95,7 +95,7 @@
  *
  * If the label has links, there is one subnode per link. These subnodes
  * carry the link or visited state depending on whether they have been
- * visited.
+ * visited. In this case, label node also gets a .link style class.
  *
  * # GtkLabel as GtkBuildable
  *
@@ -2325,6 +2325,7 @@ gtk_label_set_markup_internal (GtkLabel    *label,
       priv->select_info->links = g_list_reverse (links);
       _gtk_label_accessible_update_links (label);
       gtk_label_ensure_has_tooltip (label);
+      gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (label)), "link");
     }
 
   if (with_uline)
@@ -3677,12 +3678,16 @@ gtk_label_snapshot (GtkWidget   *widget,
               range[0] = focus_link->start;
               range[1] = focus_link->end;
 
+              gtk_style_context_save_to_node (context, focus_link->cssnode);
+
               range_clip = gdk_pango_layout_get_clip_region (priv->layout, lx, ly, range, 1);
               cairo_region_get_extents (range_clip, &rect);
 
               gtk_snapshot_render_focus (snapshot, context, rect.x, rect.y, rect.width, rect.height);
 
               cairo_region_destroy (range_clip);
+
+              gtk_style_context_restore (context);
             }
         }
     }
@@ -5795,6 +5800,7 @@ gtk_label_clear_links (GtkLabel *label)
   g_list_free_full (priv->select_info->links, (GDestroyNotify) link_free);
   priv->select_info->links = NULL;
   priv->select_info->active_link = NULL;
+  gtk_style_context_remove_class (gtk_widget_get_style_context (GTK_WIDGET (label)), "link");
 
   _gtk_label_accessible_update_links (label);
 }