# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1596405004 -7200
# Node ID 3963e17fc481a6cb905c7f38e430c4b8612fff88
# Parent  e07397f18b2e1e9e0268bc9e6cdbcea84c3acbec
Prevent gradients from being applied to edge features such as arrowheads.

diff -r e07397f18b2e -r 3963e17fc481 moinformat/resources/notugly.xsl
--- a/moinformat/resources/notugly.xsl	Sun May 03 23:44:19 2020 +0200
+++ b/moinformat/resources/notugly.xsl	Sun Aug 02 23:50:04 2020 +0200
@@ -6,7 +6,7 @@
 http://www.hokstad.com/making-graphviz-output-pretty-with-xsl.html
 
 Copyright (c) 2012 Vidar Hokstad <vidar@hokstad.com>
-Copyright (c) 2016, 2019 Paul Boddie <paul@boddie.org.uk>
+Copyright (c) 2016, 2019, 2020 Paul Boddie <paul@boddie.org.uk>
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
@@ -283,6 +283,8 @@
 
 
 <xsl:template match="svg:g">
+  <xsl:param name="class" select="@class"/>
+
   <xsl:copy>
     <xsl:apply-templates select="@*" />
     <xsl:choose>
@@ -292,7 +294,7 @@
           <xsl:copy>
             <xsl:apply-templates select="@*" />
             <xsl:call-template name="group">
-              <xsl:with-param name="class" select="../@class"/>
+              <xsl:with-param name="class" select="$class"/>
             </xsl:call-template>
           </xsl:copy>
         </xsl:for-each>
@@ -312,7 +314,9 @@
   <xsl:param name="class" select="@class"/>
 
   <!-- Process any subgroups, apparent in Graphviz 2.38.0 output. -->
-  <xsl:apply-templates select="svg:g"/>
+  <xsl:apply-templates select="svg:g">
+    <xsl:with-param name="class" select="$class"/>
+  </xsl:apply-templates>
 
   <!-- Produce shadows for nodes. -->
   <xsl:for-each select="svg:polygon|svg:ellipse">
@@ -336,7 +340,9 @@
 
   <xsl:for-each select="svg:polygon|svg:ellipse">
     <xsl:sort select="@ry" order="descending" />
-    <xsl:call-template name="poly-main" />
+    <xsl:call-template name="poly-main">
+      <xsl:with-param name="class" select="$class"/>
+    </xsl:call-template>
   </xsl:for-each>
 
   <xsl:choose>
@@ -508,18 +514,22 @@
 </xsl:template>
 
 <xsl:template name="poly-main">
+  <xsl:param name="class"/>
   <xsl:element name="{name()}">
     <xsl:apply-templates select="@*" />
-    <xsl:call-template name="make-style-attribute">
-      <xsl:with-param name="fill"
-                      select="normalize-space(substring-after(substring-before(@style,';'),'fill:'))"/>
-      <xsl:with-param name="fill-explicit"
-                      select="@fill"/>
-      <xsl:with-param name="stroke"
-                      select="normalize-space(substring-after(substring-after(@style,';'),'stroke:'))"/>
-      <xsl:with-param name="stroke-explicit"
-                      select="@stroke"/>
-    </xsl:call-template>
+    <!-- Prevent edge polygons (such as arrowheads) from having gradients applied to them. -->
+    <xsl:if test="$class != 'edge'">
+      <xsl:call-template name="make-style-attribute">
+        <xsl:with-param name="fill"
+                        select="normalize-space(substring-after(substring-before(@style,';'),'fill:'))"/>
+        <xsl:with-param name="fill-explicit"
+                        select="@fill"/>
+        <xsl:with-param name="stroke"
+                        select="normalize-space(substring-after(substring-after(@style,';'),'stroke:'))"/>
+        <xsl:with-param name="stroke-explicit"
+                        select="@stroke"/>
+      </xsl:call-template>
+    </xsl:if>
   </xsl:element>
 </xsl:template>