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https://github.com/LadybirdBrowser/ladybird.git
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bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
/*
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* Copyright (c) 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 <AK/ByteBuffer.h>
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#include <LibGfx/Forward.h>
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#include <LibWeb/HTML/HTMLElement.h>
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#include <LibWeb/WebGL/WebGLRenderingContext.h>
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namespace Web::HTML {
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class HTMLCanvasElement final : public HTMLElement {
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WEB_PLATFORM_OBJECT(HTMLCanvasElement, HTMLElement);
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JS_DECLARE_ALLOCATOR(HTMLCanvasElement);
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public:
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using RenderingContext = Variant<JS::Handle<CanvasRenderingContext2D>, JS::Handle<WebGL::WebGLRenderingContext>, Empty>;
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virtual ~HTMLCanvasElement() override;
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Gfx::Bitmap const* bitmap() const { return m_bitmap; }
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Gfx::Bitmap* bitmap() { return m_bitmap; }
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bool create_bitmap(size_t minimum_width = 0, size_t minimum_height = 0);
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JS::ThrowCompletionOr<RenderingContext> get_context(String const& type, JS::Value options);
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unsigned width() const;
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unsigned height() const;
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WebIDL::ExceptionOr<void> set_width(unsigned);
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WebIDL::ExceptionOr<void> set_height(unsigned);
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String to_data_url(StringView type, Optional<double> quality);
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WebIDL::ExceptionOr<void> to_blob(JS::NonnullGCPtr<WebIDL::CallbackType> callback, StringView type, Optional<double> quality);
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void present();
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private:
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HTMLCanvasElement(DOM::Document&, DOM::QualifiedName);
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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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virtual void apply_presentational_hints(CSS::StyleProperties&) const override;
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virtual JS::GCPtr<Layout::Node> create_layout_node(NonnullRefPtr<CSS::StyleProperties>) override;
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enum class HasOrCreatedContext {
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No,
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Yes,
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};
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HasOrCreatedContext create_2d_context();
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JS::ThrowCompletionOr<HasOrCreatedContext> create_webgl_context(JS::Value options);
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void reset_context_to_default_state();
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RefPtr<Gfx::Bitmap> m_bitmap;
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Variant<JS::NonnullGCPtr<HTML::CanvasRenderingContext2D>, JS::NonnullGCPtr<WebGL::WebGLRenderingContext>, Empty> m_context;
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};
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}
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