mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-08 04:02:52 +00:00
b981e6f7bc
Many times, attribute mutation doesn't necessitate a full style invalidation on the element. However, the conditions are pretty elaborate, so this first version has a lot of false positives. We only need to invalidate style when any of these things apply: 1. The change may affect the match state of a selector somewhere. 2. The change may affect presentational hints applied to the element. For (1) in this first version, we have a fixed list of attribute names that may affect selectors. We also collect all names referenced by attribute selectors anywhere in the document. For (2), we add a new Element::is_presentational_hint() virtual that tells us whether a given attribute name is a presentational hint. This drastically reduces style work on many websites. As an example, https://cnn.com/ is once again browseable.
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
/*
|
|
* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <LibGfx/Color.h>
|
|
#include <LibWeb/SVG/AttributeParser.h>
|
|
#include <LibWeb/SVG/SVGAnimatedNumber.h>
|
|
#include <LibWeb/SVG/SVGElement.h>
|
|
|
|
namespace Web::SVG {
|
|
|
|
// https://svgwg.org/svg2-draft/pservers.html#GradientStops
|
|
class SVGStopElement final : public SVGElement {
|
|
WEB_PLATFORM_OBJECT(SVGStopElement, SVGElement);
|
|
GC_DECLARE_ALLOCATOR(SVGStopElement);
|
|
|
|
public:
|
|
virtual ~SVGStopElement() override = default;
|
|
|
|
virtual void attribute_changed(FlyString const& name, Optional<String> const& old_value, Optional<String> const& value, Optional<FlyString> const& namespace_) override;
|
|
|
|
GC::Ref<SVGAnimatedNumber> offset() const;
|
|
|
|
virtual bool is_presentational_hint(FlyString const&) const override;
|
|
virtual void apply_presentational_hints(GC::Ref<CSS::CascadedProperties>) const override;
|
|
|
|
NumberPercentage stop_offset() const { return m_offset.value_or(NumberPercentage::create_number(0)); }
|
|
Gfx::Color stop_color() const;
|
|
float stop_opacity() const;
|
|
|
|
private:
|
|
SVGStopElement(DOM::Document&, DOM::QualifiedName);
|
|
|
|
virtual void initialize(JS::Realm&) override;
|
|
|
|
Optional<NumberPercentage> m_offset;
|
|
};
|
|
|
|
}
|