ladybird/Libraries/LibWeb/CSS/StyleValues/AbstractImageStyleValue.h
Callum Law ed2909674f LibWeb: Add computationally independent check for custom properties
Registered custom properties only accept "computationally independent"
values for their initial value
2026-03-26 01:11:39 +00:00

74 lines
2.7 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/CSS/PercentageOr.h>
#include <LibWeb/CSS/Serialize.h>
#include <LibWeb/CSS/StyleValues/ColorStyleValue.h>
#include <LibWeb/CSS/StyleValues/StyleValue.h>
namespace Web::CSS {
class AbstractImageStyleValue : public StyleValue {
public:
using StyleValue::StyleValue;
virtual Optional<CSSPixels> natural_width() const { return {}; }
virtual Optional<CSSPixels> natural_height() const { return {}; }
virtual Optional<CSSPixelFraction> natural_aspect_ratio() const
{
auto width = natural_width();
auto height = natural_height();
if (width.has_value() && height.has_value() && *height != 0)
return *width / *height;
return {};
}
virtual void load_any_resources(DOM::Document&) { }
virtual void resolve_for_size(Layout::NodeWithStyle const&, CSSPixelSize) const { }
virtual bool is_paintable() const = 0;
virtual void paint(DisplayListRecordingContext& context, DevicePixelRect const& dest_rect, ImageRendering) const = 0;
virtual Optional<Gfx::Color> color_if_single_pixel_bitmap() const { return {}; }
virtual GC::Ref<CSSStyleValue> reify(JS::Realm&, FlyString const& associated_property) const override;
};
// And now, some gradient related things. Maybe these should live somewhere else.
enum class GradientRepeating {
Yes,
No
};
struct ColorStopListElement {
ValueComparingRefPtr<StyleValue const> transition_hint;
struct ColorStop {
ValueComparingRefPtr<StyleValue const> color;
ValueComparingRefPtr<StyleValue const> position;
ValueComparingRefPtr<StyleValue const> second_position {};
bool operator==(ColorStop const&) const = default;
} color_stop;
bool operator==(ColorStopListElement const&) const = default;
ColorStopListElement absolutized(ComputationContext const& context) const;
bool is_computationally_independent() const
{
return (!transition_hint || transition_hint->is_computationally_independent())
&& (!color_stop.color || color_stop.color->is_computationally_independent())
&& (!color_stop.position || color_stop.position->is_computationally_independent())
&& (!color_stop.second_position || color_stop.second_position->is_computationally_independent());
}
};
void serialize_color_stop_list(StringBuilder&, Vector<ColorStopListElement> const&, SerializationMode);
}