From 234d83aed0c8bda90cf13ee330630fcd4023a0b0 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Thu, 7 Apr 2022 22:51:29 -0400
Subject: [PATCH] Add a private getter for the stroke path

We will implement stroking by filling the stroke path.

Compute the stroke path ahead of time, so we don't have
to do it over and over.

This may change in the future, at least for simple
strokes, so keep this private.
---
 gsk/gskrendernode.h        |  2 +-
 gsk/gskrendernodeimpl.c    | 17 +++++++++++++++--
 gsk/gskrendernodeprivate.h |  1 +
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/gsk/gskrendernode.h b/gsk/gskrendernode.h
index f9b1657bb6..475cdffea7 100644
--- a/gsk/gskrendernode.h
+++ b/gsk/gskrendernode.h
@@ -487,7 +487,7 @@ GskRenderNode *         gsk_stroke_node_get_child               (GskRenderNode
 GDK_AVAILABLE_IN_ALL
 GskPath *               gsk_stroke_node_get_path                (GskRenderNode            *node);
 GDK_AVAILABLE_IN_ALL
-const GskStroke *       gsk_stroke_node_get_stroke              (GskRenderNode            *node);
+const GskStroke *       gsk_stroke_node_get_stroke              (const GskRenderNode      *node);
 
 GDK_AVAILABLE_IN_ALL
 GType                   gsk_shadow_node_get_type                (void) G_GNUC_CONST;
diff --git a/gsk/gskrendernodeimpl.c b/gsk/gskrendernodeimpl.c
index ff343fba17..072564a818 100644
--- a/gsk/gskrendernodeimpl.c
+++ b/gsk/gskrendernodeimpl.c
@@ -4567,6 +4567,7 @@ struct _GskStrokeNode
 
   GskRenderNode *child;
   GskPath *path;
+  GskPath *stroke_path;
   GskStroke stroke;
 };
 
@@ -4578,6 +4579,7 @@ gsk_stroke_node_finalize (GskRenderNode *node)
 
   gsk_render_node_unref (self->child);
   gsk_path_unref (self->path);
+  gsk_path_unref (self->stroke_path);
   gsk_stroke_clear (&self->stroke);
 
   parent_class->finalize (node);
@@ -4672,6 +4674,7 @@ gsk_stroke_node_new (GskRenderNode   *child,
   self->child = gsk_render_node_ref (child);
   self->path = gsk_path_ref (path);
   gsk_stroke_init_copy (&self->stroke, stroke);
+  self->stroke_path = gsk_path_stroke (path, &self->stroke);
 
   /* XXX: Figure out a way to compute bounds from the path */
   graphene_rect_init_from_rect (&node->bounds, &child->bounds);
@@ -4716,6 +4719,16 @@ gsk_stroke_node_get_path (GskRenderNode *node)
   return self->path;
 }
 
+GskPath *
+gsk_stroke_node_get_stroke_path (const GskRenderNode *node)
+{
+  const GskStrokeNode *self = (const GskStrokeNode *) node;
+
+  g_return_val_if_fail (GSK_IS_RENDER_NODE_TYPE (node, GSK_STROKE_NODE), NULL);
+
+  return self->stroke_path;
+}
+
 /**
  * gsk_stroke_node_get_stroke:
  * @node: (type GskStrokeNode): a stroke #GskRenderNode
@@ -4725,9 +4738,9 @@ gsk_stroke_node_get_path (GskRenderNode *node)
  * Returns: a #GskStroke
  */
 const GskStroke *
-gsk_stroke_node_get_stroke (GskRenderNode *node)
+gsk_stroke_node_get_stroke (const GskRenderNode *node)
 {
-  GskStrokeNode *self = (GskStrokeNode *) node;
+  const GskStrokeNode *self = (const GskStrokeNode *) node;
 
   g_return_val_if_fail (GSK_IS_RENDER_NODE_TYPE (node, GSK_STROKE_NODE), NULL);
 
diff --git a/gsk/gskrendernodeprivate.h b/gsk/gskrendernodeprivate.h
index 4ad79bd593..f746af0025 100644
--- a/gsk/gskrendernodeprivate.h
+++ b/gsk/gskrendernodeprivate.h
@@ -87,6 +87,7 @@ gboolean        gsk_container_node_is_disjoint          (const GskRenderNode
 
 gboolean        gsk_render_node_use_offscreen_for_opacity (const GskRenderNode       *node);
 
+GskPath *      gsk_stroke_node_get_stroke_path           (const GskRenderNode *node);
 
 G_END_DECLS