From 342adb4274d9c87256253d55cd7956a036a324ca Mon Sep 17 00:00:00 2001
From: Pratik Patel <69638392+pratikpatel8982@users.noreply.github.com>
Date: Fri, 15 May 2026 14:40:00 +0530
Subject: [PATCH] fix: preserve PNG transparency in chat wallpapers

Remove .forceOpaque = true from ChooseFromFile in settings_chat.cpp and BackgroundBox::chooseFromFile in background_box.cpp, which was compositing transparent pixels against white via Opaque() for all non-JPEG files before the image reached the wallpaper pipeline.
---
 Telegram/SourceFiles/boxes/background_box.cpp            | 2 +-
 Telegram/SourceFiles/settings/sections/settings_chat.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Telegram/SourceFiles/boxes/background_box.cpp b/Telegram/SourceFiles/boxes/background_box.cpp
index 40cb7c2f858d3..49ae3f3e3a4b7 100644
--- a/Telegram/SourceFiles/boxes/background_box.cpp
+++ b/Telegram/SourceFiles/boxes/background_box.cpp
@@ -250,7 +250,7 @@ void BackgroundBox::chooseFromFile() {
 		auto image = Images::Read({
 			.path = result.paths.isEmpty() ? QString() : result.paths.front(),
 			.content = result.remoteContent,
-			.forceOpaque = true,
+			.forceOpaque = false,
 		}).image;
 		if (image.isNull() || image.width() <= 0 || image.height() <= 0) {
 			return;
diff --git a/Telegram/SourceFiles/settings/sections/settings_chat.cpp b/Telegram/SourceFiles/settings/sections/settings_chat.cpp
index c4c4cfe15afbb..92e91268a8a3e 100644
--- a/Telegram/SourceFiles/settings/sections/settings_chat.cpp
+++ b/Telegram/SourceFiles/settings/sections/settings_chat.cpp
@@ -707,7 +707,7 @@ void ChooseFromFile(
 		auto image = Images::Read({
 			.path = result.paths.isEmpty() ? QString() : result.paths.front(),
 			.content = result.remoteContent,
-			.forceOpaque = true,
+			.forceOpaque = false,
 		}).image;
 		if (image.isNull() || image.width() <= 0 || image.height() <= 0) {
 			return;