From fad6003660d7c7dd18693e6c1e18869c8c8072c6 Mon Sep 17 00:00:00 2001
From: Le Tan <tamlokveer@gmail.com>
Date: Sat, 30 Jun 2018 22:15:55 +0800
Subject: [PATCH] export: fix rendering issue of non-ASCII chars in Graphviz

We use SVG format for Graphviz when exporting to PDF to avoid specifying
proper font.
---
 src/utils/vutils.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/utils/vutils.cpp b/src/utils/vutils.cpp
index 5e67631f..3f4ab846 100644
--- a/src/utils/vutils.cpp
+++ b/src/utils/vutils.cpp
@@ -764,7 +764,10 @@ QString VUtils::generateHtmlTemplate(const QString &p_template,
     if (g_config->getEnableGraphviz()) {
         extraFile += "<script>var VEnableGraphviz = true;</script>\n";
 
-        QString format = p_isPDF ? "png" : "svg";
+        // If we use png, we need to specify proper font in the dot command to render
+        // non-ASCII chars properly.
+        // Hence we use svg format in both cases.
+        QString format = p_isPDF ? "svg" : "svg";
         extraFile += QString("<script>var VGraphvizFormat = '%1';</script>\n").arg(format);
     }