From 8d7030936c3d00030c7887839e56b6142f8e7d85 Mon Sep 17 00:00:00 2001
From: Federico Mena Quintero <federico@gnome.org>
Date: Tue, 19 Jun 2018 17:36:17 -0500
Subject: with_discrete_layer(): Don't acquire the clip_node more than once

---
 rsvg_internals/src/drawing_ctx.rs | 50 +++++++++++++--------------------------
 1 file changed, 16 insertions(+), 34 deletions(-)

diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index 495bb732..379d506f 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -238,14 +238,14 @@ pub fn with_discrete_layer(
 
         let current_affine = original_cr.get_matrix();
 
-        if let Some(acquired) =
+        let clip_node =
             get_acquired_node_of_type(draw_ctx, clip_uri.map(String::as_ref), NodeType::ClipPath)
-        {
-            let node = acquired.get();
+                .and_then(|acquired| Some(acquired.get()));
 
-            node.with_impl(|clip_path: &NodeClipPath| match clip_path.get_units() {
+        if let Some(ref clip_node) = clip_node {
+            clip_node.with_impl(|clip_path: &NodeClipPath| match clip_path.get_units() {
                 ClipPathUnits(CoordUnits::UserSpaceOnUse) => {
-                    clip_path.to_cairo_context(&node, &current_affine, draw_ctx);
+                    late_clip = false;
                 }
 
                 ClipPathUnits(CoordUnits::ObjectBoundingBox) => {
@@ -254,6 +254,14 @@ pub fn with_discrete_layer(
             });
         }
 
+        if !late_clip {
+            if let Some(ref clip_node) = clip_node {
+                clip_node.with_impl(|clip_path: &NodeClipPath| {
+                    clip_path.to_cairo_context(clip_node, &current_affine, draw_ctx);
+                });
+            }
+        }
+
         if !(opacity == 1.0
             && filter.is_none()
             && mask.is_none()
@@ -292,26 +300,6 @@ pub fn with_discrete_layer(
 
         draw_fn(&get_cairo_context(draw_ctx));
 
-        if let Some(acquired) =
-            get_acquired_node_of_type(draw_ctx, clip_uri.map(String::as_ref), NodeType::ClipPath)
-        {
-            let mut clip_path_units = ClipPathUnits::default();
-
-            acquired.get().with_impl(|clip_path: &NodeClipPath| {
-                clip_path_units = clip_path.get_units();
-            });
-
-            match clip_path_units {
-                ClipPathUnits(CoordUnits::UserSpaceOnUse) => {
-                    late_clip = false;
-                }
-
-                ClipPathUnits(CoordUnits::ObjectBoundingBox) => {
-                    late_clip = true;
-                }
-            }
-        }
-
         if !(opacity == 1.0
             && filter.is_none()
             && mask.is_none()
@@ -373,15 +361,9 @@ pub fn with_discrete_layer(
             cr.set_source_surface(&surface, xofs, yofs);
 
             if late_clip {
-                if let Some(acquired) = get_acquired_node_of_type(
-                    draw_ctx,
-                    clip_uri.map(String::as_ref),
-                    NodeType::ClipPath,
-                ) {
-                    let node = acquired.get();
-
-                    node.with_impl(|clip_path: &NodeClipPath| {
-                        clip_path.to_cairo_context(&node, &current_affine, draw_ctx);
+                if let Some(ref clip_node) = clip_node {
+                    clip_node.with_impl(|clip_path: &NodeClipPath| {
+                        clip_path.to_cairo_context(clip_node, &current_affine, draw_ctx);
                     });
                 }
             }
-- 
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