ladybird/Libraries/LibWeb/CSS/StyleValues/ImageSetStyleValue.h
Tim Ledbetter b0c25736f9 LibWeb: Scale image-set() natural size by the selected resolution
The <resolution> of the chosen image-set() option overrides the image's
natural resolution, so the image-set()'s natural dimensions are the
selected image's pixel dimensions divided by that resolution.
2026-06-13 21:27:40 +02:00

59 lines
2.2 KiB
C++

/*
* Copyright (c) 2026-present, the Ladybird developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
namespace Web::CSS {
class ImageSetStyleValue final : public AbstractImageStyleValue {
using Base = AbstractImageStyleValue;
public:
struct Option {
NonnullRefPtr<AbstractImageStyleValue const> image;
NonnullRefPtr<StyleValue const> resolution;
Optional<String> type;
};
static ValueComparingNonnullRefPtr<ImageSetStyleValue const> create(Vector<Option>);
virtual ~ImageSetStyleValue() override = default;
virtual void serialize(StringBuilder&, SerializationMode) const override;
virtual bool equals(StyleValue const& other) const override;
virtual bool is_computationally_independent() const override;
virtual void load_any_resources(DOM::Document&) override;
virtual Optional<CSSPixels> natural_width(DOM::Document const&) const override;
virtual Optional<CSSPixels> natural_height(DOM::Document const&) const override;
virtual Optional<CSSPixelFraction> natural_aspect_ratio(DOM::Document const&) const override;
virtual void resolve_for_size(Layout::NodeWithStyle const&, CSSPixelSize) const override;
virtual bool is_paintable(DOM::Document const&) const override;
virtual void paint(DisplayListRecordingContext&, DOM::Document const&, DevicePixelRect const&, ImageRendering) const override;
virtual Optional<Gfx::Color> color_if_single_pixel_bitmap(DOM::Document const&) const override;
AbstractImageStyleValue const* selected_image() const { return m_selected_image; }
private:
explicit ImageSetStyleValue(Vector<Option>);
virtual void set_style_sheet(GC::Ptr<CSSStyleSheet>) override;
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(ComputationContext const&) const override;
Option const* select_option(double device_pixels_per_css_pixel) const;
Vector<Option> m_options;
mutable AbstractImageStyleValue const* m_selected_image { nullptr };
mutable double m_selected_resolution { 1 };
};
}