From 661445775940b3e692e6ae96660c3b2e1a8f5b32 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Mon, 15 May 2023 14:34:01 +1000
Subject: [PATCH] Add fractional scaling workaround

---
 qt/aqt/__init__.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/qt/aqt/__init__.py b/qt/aqt/__init__.py
index 134d6ce83..bbff3e54e 100644
--- a/qt/aqt/__init__.py
+++ b/qt/aqt/__init__.py
@@ -576,6 +576,11 @@ def _run(argv: Optional[list[str]] = None, exec: bool = True) -> Optional[AnkiAp
     if os.environ.get("ANKI_SOFTWAREOPENGL"):
         QCoreApplication.setAttribute(Qt.ApplicationAttribute.AA_UseSoftwareOpenGL)
 
+    # Work around broken fractional scaling in Wayland
+    # https://bugreports.qt.io/browse/QTBUG-113574
+    if is_lin and qtmajor > 5:
+        os.environ["QT_SCALE_FACTOR_ROUNDING_POLICY"] = "RoundPreferFloor"
+
     # fix an issue on Windows, where Ctrl+Alt shortcuts are triggered by AltGr,
     # preventing users from typing things like "@" through AltGr+Q on a German
     # keyboard.