From 180b0bc51796dcbe5d9371280e49fda24dfaf0fd Mon Sep 17 00:00:00 2001
From: Ilya Fedin <fedin-ilja2010@ya.ru>
Date: Sun, 14 Aug 2022 07:02:06 +0400
Subject: [PATCH] Apply window extents early to avoid window size changes

---
 ui/platform/ui_platform_window.cpp | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/ui/platform/ui_platform_window.cpp b/ui/platform/ui_platform_window.cpp
index 0a4a70f..55bcf0e 100644
--- a/ui/platform/ui_platform_window.cpp
+++ b/ui/platform/ui_platform_window.cpp
@@ -192,12 +192,13 @@ DefaultWindowHelper::DefaultWindowHelper(not_null<RpWidget*> window)
 }
 
 void DefaultWindowHelper::init() {
-	_title->show();
-
 	if (WindowExtentsSupported()) {
 		window()->setAttribute(Qt::WA_TranslucentBackground);
 	}
 
+	window()->createWinId();
+	_title->show();
+
 	rpl::combine(
 		window()->widthValue(),
 		_windowState.value(),
@@ -260,12 +261,8 @@ void DefaultWindowHelper::init() {
 			bool shown,
 			bool titleShown,
 			Qt::WindowStates windowState) {
-		if (const auto handle = window()->windowHandle()) {
-			handle->setFlag(Qt::FramelessWindowHint, titleShown);
-			updateWindowExtents();
-		} else {
-			window()->setWindowFlag(Qt::FramelessWindowHint, titleShown);
-		}
+		window()->windowHandle()->setFlag(Qt::FramelessWindowHint, titleShown);
+		updateWindowExtents();
 	}, window()->lifetime());
 
 	window()->events() | rpl::start_with_next([=](not_null<QEvent*> e) {