From 0dc12b6b30f825e63ee8992c46fffede837a9fcd Mon Sep 17 00:00:00 2001
From: Guillaume Ayoub <guillaume@courtbouillon.org>
Date: Fri, 30 Sep 2022 23:54:41 +0200
Subject: [PATCH] Cache add_font to avoid calling get_face too often

---
 weasyprint/pdf/stream.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/weasyprint/pdf/stream.py b/weasyprint/pdf/stream.py
index dfe09884c2..617ee57365 100644
--- a/weasyprint/pdf/stream.py
+++ b/weasyprint/pdf/stream.py
@@ -2,6 +2,7 @@
 
 import io
 import struct
+from functools import lru_cache
 
 import pydyf
 from fontTools import subset
@@ -310,6 +311,7 @@ def set_blend_mode(self, mode):
             'BM': f'/{mode}',
         }))
 
+    @lru_cache
     def add_font(self, pango_font):
         pango_face = pango.pango_font_get_face(pango_font)
         if pango_face not in self._fonts: