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64abc6101d
Our structured serialization implementation had its own bespoke encoder and decoder to serialize JS values. It also used a u32 buffer under the hood, which made using its structures a bit awkward. We had previously worked around its data structures in transferable streams, which nested transfers of MessagePort instances. We basically had to add hooks into the MessagePort to route to the correct transfer receiving steps, and we could not invoke the correct AOs directly as the spec dictates. We now use IPC mechanics to encode and decode data. This works because, although we are encoding JS values, we are only ultimately encoding primitive and basic AK types. The resulting data structures actually enforce that we implement transferable streams exactly as the spec is worded (I had planned to do that in a separate commit, but the fallout of this patch actually required that change).
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/*
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* Copyright (c) 2024, Lucas Chollet <lucas.chollet@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 <AK/OwnPtr.h>
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#include <LibGfx/Bitmap.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/Bindings/Serializable.h>
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#include <LibWeb/Bindings/Transferable.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/Canvas/CanvasDrawImage.h>
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namespace Web::HTML {
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using ImageBitmapSource = FlattenVariant<CanvasImageSource, Variant<GC::Root<FileAPI::Blob>, GC::Root<ImageData>>>;
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// https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html#imagebitmapoptions
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struct ImageBitmapOptions {
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// FIXME: Implement these fields
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};
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class ImageBitmap final : public Bindings::PlatformObject
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, public Web::Bindings::Serializable
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, public Web::Bindings::Transferable {
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WEB_PLATFORM_OBJECT(ImageBitmap, Bindings::PlatformObject);
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GC_DECLARE_ALLOCATOR(ImageBitmap);
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public:
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static GC::Ref<ImageBitmap> create(JS::Realm&);
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virtual ~ImageBitmap() override = default;
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// ^Web::Bindings::Serializable
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virtual HTML::SerializeType serialize_type() const override { return HTML::SerializeType::ImageBitmap; }
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virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::TransferDataEncoder&, bool for_storage, HTML::SerializationMemory&) override;
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virtual WebIDL::ExceptionOr<void> deserialization_steps(HTML::TransferDataDecoder&, HTML::DeserializationMemory&) override;
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// ^Web::Bindings::Transferable
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virtual WebIDL::ExceptionOr<void> transfer_steps(HTML::TransferDataEncoder&) override;
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virtual WebIDL::ExceptionOr<void> transfer_receiving_steps(HTML::TransferDataDecoder&) override;
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virtual HTML::TransferType primary_interface() const override;
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WebIDL::UnsignedLong width() const;
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WebIDL::UnsignedLong height() const;
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void close();
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// Implementation specific:
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void set_bitmap(RefPtr<Gfx::Bitmap>);
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Gfx::Bitmap* bitmap() const;
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private:
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explicit ImageBitmap(JS::Realm&);
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// FIXME: We don't implement this flag yet:
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// An ImageBitmap object's bitmap has an origin-clean flag, which indicates whether the bitmap is tainted by content
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// from a different origin. The flag is initially set to true and may be changed to false by the steps of
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// createImageBitmap().
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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WebIDL::UnsignedLong m_width = 0;
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WebIDL::UnsignedLong m_height = 0;
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RefPtr<Gfx::Bitmap> m_bitmap { nullptr };
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};
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}
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