From ddfba447fb4975c882d92afca66ceeda38a6ff6e Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 27 Dec 2011 18:28:58 +0530
Subject: [PATCH] Fix #908975 (Change font size with CTRL+Mousewheel)

---
 src/calibre/gui2/viewer/documentview.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/calibre/gui2/viewer/documentview.py b/src/calibre/gui2/viewer/documentview.py
index 170fb936bd..7f3ab26ec0 100644
--- a/src/calibre/gui2/viewer/documentview.py
+++ b/src/calibre/gui2/viewer/documentview.py
@@ -956,6 +956,13 @@ class DocumentView(QWebView): # {{{
         painter.end()
 
     def wheelEvent(self, event):
+        mods = event.modifiers()
+        if mods & Qt.CTRL:
+            if self.manager is not None and event.delta() != 0:
+                f = (self.manager.font_size_larger if event.delta() > 0 else
+                        self.manager.font_size_smaller)
+                f(False)
+            return
         if event.delta() < -14:
             if self.document.wheel_flips_pages:
                 self.next_page()