From 29435392c664e26b5fedbcfe6a6eda9e54c8872a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 6 Sep 2023 12:12:50 +0530
Subject: [PATCH] Also implement caching of images for the comments editor

---
 src/calibre/gui2/comments_editor.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/calibre/gui2/comments_editor.py b/src/calibre/gui2/comments_editor.py
index 2a74cd588a..ce7c256a25 100644
--- a/src/calibre/gui2/comments_editor.py
+++ b/src/calibre/gui2/comments_editor.py
@@ -840,20 +840,23 @@ class EditorWidget(QTextEdit, LineEditECM):  # {{{
             if qurl.isRelative():
                 qurl = self.base_url.resolved(qurl)
             if qurl.isLocalFile():
+                data = None
                 path = qurl.toLocalFile()
                 try:
                     with open(path, 'rb') as f:
                         data = f.read()
                 except OSError:
                     if path.rpartition('.')[-1].lower() in {'jpg', 'jpeg', 'gif', 'png', 'bmp', 'webp'}:
-                        return QByteArray(bytearray.fromhex(
+                        data = bytearray.fromhex(
                                     '89504e470d0a1a0a0000000d49484452'
                                     '000000010000000108060000001f15c4'
                                     '890000000a49444154789c6300010000'
                                     '0500010d0a2db40000000049454e44ae'
-                                    '426082'))
-                else:
-                    return QByteArray(data)
+                                    '426082')
+                if data is not None:
+                    r = QByteArray(data)
+                    self.document().addResource(rtype, qurl, r)
+                    return r
 
     def set_html(self, val, allow_undo=True):
         if not allow_undo or self.readonly: