From bb21e82f756debf9b27c4e8a7216abe4da57ff33 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 15 Oct 2020 09:12:56 +0530
Subject: [PATCH] DOCX Input: Add support for presentational markup used to
 rotate or flip images

Note that it will only work if the output format supports CSS transforms,
such as EPUB or AZW3
---
 src/calibre/ebooks/docx/images.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/calibre/ebooks/docx/images.py b/src/calibre/ebooks/docx/images.py
index 31ca932ed9..55130e1fbc 100644
--- a/src/calibre/ebooks/docx/images.py
+++ b/src/calibre/ebooks/docx/images.py
@@ -60,6 +60,26 @@ def get_image_properties(parent, XPath, get):
         title = docPr.get('title') or title
         if docPr.get('hidden', None) in {'true', 'on', '1'}:
             ans['display'] = 'none'
+    transforms = []
+    for graphic in XPath('./a:graphic')(parent):
+        for xfrm in XPath('descendant::a:xfrm')(graphic):
+            rot = xfrm.get('rot')
+            if rot:
+                try:
+                    rot = int(rot) / 60000
+                except Exception:
+                    rot = None
+            if rot:
+                transforms.append(f'rotate({rot:g}deg)')
+            fliph = xfrm.get('flipH')
+            if fliph in ('1', 'true'):
+                transforms.append('scaleX(-1)')
+            flipv = xfrm.get('flipV')
+            if flipv in ('1', 'true'):
+                transforms.append('scaleY(-1)')
+
+    if transforms:
+        ans['transform'] = ' '.join(transforms)
 
     return ans, alt, title