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LibWeb: Remove incomplete attempt to avoid repaints outside viewport

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This code didn't account for position:fixed elements, which meant that
we'd swallow repaints for such elements when the viewport wasn't
scrolled to the top of the page.

We replace the incomplete optimization with a FIXME noting that this
needs to be handled correctly when reintroduced.
This commit is contained in:
Andreas Kling
2023-12-26 22:38:44 +01:00
parent 1f9942fede
commit 0c7b1d27b4
Notes: sideshowbarker 2024-07-17 10:05:47 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/0c7b1d27b4
1 changed files with 2 additions and 2 deletions
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4
Userland/Libraries/LibWeb/HTML/Navigable.cpp
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@@ -1981,8 +1981,8 @@ void Navigable::set_needs_display()
void Navigable::set_needs_display(CSSPixelRect const& rect)
{
if (!viewport_rect().intersects(rect))
return;
// FIXME: Ignore updates outside the visible viewport rect.
// This requires accounting for fixed-position elements in the input rect, which we don't do yet.
if (is<TraversableNavigable>(*this)) {
static_cast<TraversableNavigable*>(this)->page().client().page_did_invalidate(to_top_level_rect(rect));