From 925401b26a88fa1c0e68fa235c91eca3567f0a03 Mon Sep 17 00:00:00 2001
From: Seo Youngjin <yjinseo@gmail.com>
Date: Tue, 21 Jul 2020 21:41:07 +0900
Subject: [PATCH] Division by 0 error in Font::measureText() with
 MathJax_Vector and MathJax_Vector-Bold fonts.

---
 src/dlangui/graphics/fonts.d | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/dlangui/graphics/fonts.d b/src/dlangui/graphics/fonts.d
index bbb224e9..78074e4f 100644
--- a/src/dlangui/graphics/fonts.d
+++ b/src/dlangui/graphics/fonts.d
@@ -239,6 +239,8 @@ class Font : RefCountedObject {
         bool fixed = isFixed;
         bool useKerning = allowKerning && !fixed;
         int fixedCharWidth = charWidth('M');
+        if (fixedCharWidth == 0)
+            fixedCharWidth = spaceWidth;
         int x = 0;
         int charsMeasured = 0;
         int * pwidths = widths.ptr;