ladybird/Userland/Libraries/LibWeb/CSS/StyleInvalidation.h
Aliaksandr Kalenik cf7c933312 LibWeb: Add fast path to calculate invalidations for animated css props
- Compare only the animated properties
- Clone only the hash map containing animated properties, instead of
  the entire StyleProperties.

Reduces `KeyframeEffect::update_style_properties()` from 10% to 3% in
GitHub profiles.
2024-03-19 17:30:34 +01:00

34 lines
1.1 KiB
C++

/*
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/CSS/PropertyID.h>
namespace Web::CSS {
struct RequiredInvalidationAfterStyleChange {
bool repaint : 1 { false };
bool rebuild_stacking_context_tree : 1 { false };
bool relayout : 1 { false };
bool rebuild_layout_tree : 1 { false };
void operator|=(RequiredInvalidationAfterStyleChange const& other)
{
repaint |= other.repaint;
rebuild_stacking_context_tree |= other.rebuild_stacking_context_tree;
relayout |= other.relayout;
rebuild_layout_tree |= other.rebuild_layout_tree;
}
[[nodiscard]] bool is_none() const { return !repaint && !rebuild_stacking_context_tree && !relayout && !rebuild_layout_tree; }
static RequiredInvalidationAfterStyleChange full() { return { true, true, true, true }; }
};
RequiredInvalidationAfterStyleChange compute_property_invalidation(CSS::PropertyID property_id, RefPtr<CSS::StyleValue const> const& old_value, RefPtr<CSS::StyleValue const> const& new_value);
}