ladybird/Libraries/LibWeb/CSS/StyleValues/ImageSetStyleValue.h
Andreas Kling 222c1f7044 LibWeb: Move CSS image loading state to Document
Move the SharedResourceRequest, animation timer, and current frame
state out of ImageStyleValue and into a Document-owned table keyed
by resolved image URL. ImageStyleValue now keeps only URL metadata
and its client list, so image style values no longer need to trace
GC edges themselves.

Thread the Document through AbstractImageStyleValue APIs that need
decoded image data. CSS image fetches snapshot the stylesheet base URL,
referrer behavior, and origin-clean state instead of retaining the
stylesheet.

Remember each client's registered resolved URL when unregistering. This
keeps a later document base change from leaving an animated image
resource alive.

Add text coverage for inline relative image base URLs, stylesheet
referrers, imported stylesheet origin-clean behavior, inline @import
initiator type, and unregistering an animated background image after a
base element change.
2026-06-06 23:29:48 +02:00

58 lines
2.1 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;
AbstractImageStyleValue const* select_image(double device_pixels_per_css_pixel) const;
Vector<Option> m_options;
mutable AbstractImageStyleValue const* m_selected_image { nullptr };
};
}