6f433c8656
This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
60 lines
1.6 KiB
C++
60 lines
1.6 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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public:
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using RenderingContext = Variant<NonnullRefPtr<CanvasRenderingContext2D>, NonnullRefPtr<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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void set_width(unsigned);
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void set_height(unsigned);
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String to_data_url(String const& type, Optional<double> quality) const;
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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 RefPtr<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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RenderingContext m_context;
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};
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}
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WRAPPER_HACK(HTMLCanvasElement, Web::HTML)
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