From 879df6e6a3e3c6e440e3806a1bbef8f6e47b40ff Mon Sep 17 00:00:00 2001
From: Ilya Fedin <fedin-ilja2010@ya.ru>
Date: Sat, 11 Feb 2023 18:44:59 +0400
Subject: [PATCH] Present window's devicePixelRatio in the UI

It's a more valid value when Qt's rater downscaling is in effect

Also round it
---
 Telegram/SourceFiles/settings/settings_main.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Telegram/SourceFiles/settings/settings_main.cpp b/Telegram/SourceFiles/settings/settings_main.cpp
index 6b56648ee..c2a41dbbd 100644
--- a/Telegram/SourceFiles/settings/settings_main.cpp
+++ b/Telegram/SourceFiles/settings/settings_main.cpp
@@ -474,8 +474,9 @@ void SetupInterfaceScale(
 			if constexpr (Platform::IsMac()) {
 				return QString::number(scale) + '%';
 			} else {
-				const auto ratio = window->widget()->devicePixelRatioF();
-				return QString::number(int(scale * ratio)) + '%';
+				const auto handle = window->widget()->windowHandle();
+				const auto ratio = handle->devicePixelRatio();
+				return QString::number(base::SafeRound(scale * ratio)) + '%';
 			}
 		};
 		label->setText(labelText(cEvalScale(scale)));