From 30dba7a215053ac7a6cf42f4cd0d56fc398c58a5 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 10 Feb 2023 16:42:55 +0400
Subject: [PATCH] Fix system buttons padding on Windows.

---
 ui/platform/win/ui_window_title_win.cpp | 1 +
 ui/platform/win/ui_window_win.cpp       | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/ui/platform/win/ui_window_title_win.cpp b/ui/platform/win/ui_window_title_win.cpp
index fdb8b89..bce7acc 100644
--- a/ui/platform/win/ui_window_title_win.cpp
+++ b/ui/platform/win/ui_window_title_win.cpp
@@ -225,6 +225,7 @@ rpl::producer<int> TitleWidget::additionalPaddingValue() const {
 void TitleWidget::setAdditionalPadding(int padding) {
 	Expects(_paddingHelper != nullptr);
 
+	padding /= window()->devicePixelRatio();
 	if (_paddingHelper->padding.current() == padding) {
 		return;
 	}
diff --git a/ui/platform/win/ui_window_win.cpp b/ui/platform/win/ui_window_win.cpp
index 563e12c..da05e37 100644
--- a/ui/platform/win/ui_window_win.cpp
+++ b/ui/platform/win/ui_window_win.cpp
@@ -13,6 +13,7 @@
 #include "base/platform/win/base_windows_safe_library.h"
 #include "base/platform/base_platform_info.h"
 #include "base/integration.h"
+#include "base/invoke_queued.h"
 #include "base/debug_log.h"
 #include "styles/palette.h"
 #include "styles/style_widgets.h"
@@ -585,6 +586,9 @@ bool WindowHelper::handleNativeEvent(
 
 	case WM_DPICHANGED: {
 		_dpi = LOWORD(wParam);
+		InvokeQueued(_title, [=] {
+			_title->refreshAdditionalPaddings(_handle);
+		});
 	} return false;
 
 	}