From 43afac8f5d1db8995c819b17cfce8aaff857c0c2 Mon Sep 17 00:00:00 2001
From: Eliot Jones <elioty@hotmail.co.uk>
Date: Wed, 26 Feb 2020 12:39:12 +0000
Subject: [PATCH] default to zero width characters in truetype for '.notdef'

when the character is not defined and the corresponding '.notdef' glyph isn't included in a truetype font we now default to a zero width character. it might be that we should use the default/missing width instead but this will work ok for most use-cases.
---
 .../PdfFonts/Simple/TrueTypeStandard14FallbackSimpleFont.cs  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/UglyToad.PdfPig/PdfFonts/Simple/TrueTypeStandard14FallbackSimpleFont.cs b/src/UglyToad.PdfPig/PdfFonts/Simple/TrueTypeStandard14FallbackSimpleFont.cs
index 17346d87..f649f567 100644
--- a/src/UglyToad.PdfPig/PdfFonts/Simple/TrueTypeStandard14FallbackSimpleFont.cs
+++ b/src/UglyToad.PdfPig/PdfFonts/Simple/TrueTypeStandard14FallbackSimpleFont.cs
@@ -87,7 +87,10 @@
             }
 
             var name = encoding.GetName(characterCode);
-            var metrics = fontMetrics.CharacterMetrics[name];
+            if (!fontMetrics.CharacterMetrics.TryGetValue(name, out var metrics))
+            {
+                return new CharacterBoundingBox(new PdfRectangle(), 0);
+            }
 
             if (overrides?.TryGetWidth(characterCode, out width) != true)
             {