From 2447b27d973deb7f5b66f853afe176a3ff8d5da3 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 14 Oct 2021 23:49:15 +0200
Subject: [PATCH] LibWeb: Implement position:fixed painting at the stacking
 context level

This makes everything within the stacking context stick show up in the
correct position.
---
 Userland/Libraries/LibWeb/Layout/Box.cpp               | 4 ----
 Userland/Libraries/LibWeb/Painting/StackingContext.cpp | 5 +++++
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/Userland/Libraries/LibWeb/Layout/Box.cpp b/Userland/Libraries/LibWeb/Layout/Box.cpp
index 62a205207b..fd6da0d5b6 100644
--- a/Userland/Libraries/LibWeb/Layout/Box.cpp
+++ b/Userland/Libraries/LibWeb/Layout/Box.cpp
@@ -24,10 +24,6 @@ void Box::paint(PaintContext& context, PaintPhase phase)
     if (!is_visible())
         return;
 
-    Gfx::PainterStateSaver saver(context.painter());
-    if (is_fixed_position())
-        context.painter().translate(context.scroll_offset());
-
     if (phase == PaintPhase::Background) {
         paint_background(context);
         paint_box_shadow(context);
diff --git a/Userland/Libraries/LibWeb/Painting/StackingContext.cpp b/Userland/Libraries/LibWeb/Painting/StackingContext.cpp
index 2a4f59cf71..9a99ff06aa 100644
--- a/Userland/Libraries/LibWeb/Painting/StackingContext.cpp
+++ b/Userland/Libraries/LibWeb/Painting/StackingContext.cpp
@@ -107,6 +107,11 @@ void StackingContext::paint_internal(PaintContext& context)
 
 void StackingContext::paint(PaintContext& context)
 {
+    Gfx::PainterStateSaver saver(context.painter());
+    if (m_box.is_fixed_position()) {
+        context.painter().translate(context.scroll_offset());
+    }
+
     auto opacity = m_box.computed_values().opacity();
     if (opacity.has_value() && opacity.value() == 0.0f)
         return;