From 8c01f3f0fa14e37532037537c2e15d868e4012b1 Mon Sep 17 00:00:00 2001
From: Ilya Fedin <fedin-ilja2010@ya.ru>
Date: Sun, 31 Dec 2023 09:56:49 +0400
Subject: [PATCH] Unscale DirectManipulation values

---
 ui/platform/win/ui_window_win.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ui/platform/win/ui_window_win.cpp b/ui/platform/win/ui_window_win.cpp
index 356e85b..5327495 100644
--- a/ui/platform/win/ui_window_win.cpp
+++ b/ui/platform/win/ui_window_win.cpp
@@ -501,12 +501,14 @@ void WindowHelper::handleDirectManipulationEvent(
 			::GetCursorPos(&global);
 			auto local = global;
 			::ScreenToClient(_handle, &local);
+			const auto dpi = _dpi.current() ? double(_dpi.current()) : 96.;
+			const auto delta = QPointF(event.delta) / (dpi / 96.);
 			QWindowSystemInterface::handleWheelEvent(
 				windowHandle,
 				QPointF(local.x, local.y),
 				QPointF(global.x, global.y),
-				event.delta,
-				event.delta * kPixelToAngleDelta,
+				delta.toPoint(),
+				(delta * kPixelToAngleDelta).toPoint(),
 				LookupModifiers(),
 				phase,
 				Qt::MouseEventSynthesizedBySystem);