mirror of
https://github.com/RGBCube/serenity
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268b9c5d90
This removes a set of complex reference cycles between DOM, layout tree and browsing context. It also makes lifetimes much easier to reason about, as the DOM and layout trees are now free to keep each other alive.
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/HTML/HTMLImageElement.h>
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#include <LibWeb/Layout/ReplacedBox.h>
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namespace Web::Layout {
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class ImageBox
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: public ReplacedBox
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, public HTML::BrowsingContext::ViewportClient {
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JS_CELL(ImageBox, ReplacedBox);
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public:
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ImageBox(DOM::Document&, DOM::Element&, NonnullRefPtr<CSS::StyleProperties>, ImageLoader const&);
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virtual ~ImageBox() override;
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virtual void prepare_for_replaced_layout() override;
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const DOM::Element& dom_node() const { return static_cast<const DOM::Element&>(ReplacedBox::dom_node()); }
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bool renders_as_alt_text() const;
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virtual RefPtr<Painting::Paintable> create_paintable() const override;
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auto const& image_loader() const { return m_image_loader; }
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void dom_node_did_update_alt_text(Badge<HTML::HTMLImageElement>);
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private:
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// ^BrowsingContext::ViewportClient
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virtual void browsing_context_did_set_viewport_rect(Gfx::IntRect const&) final;
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int preferred_width() const;
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int preferred_height() const;
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ImageLoader const& m_image_loader;
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Optional<float> m_cached_alt_text_width;
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};
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}
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