2bf1f41805
Move CSS animation values into a mutable overlay on computed properties and make base computed style data immutable after construction. Base style mutation now goes through a builder that is consumed on publish, so installed styles no longer expose mutation APIs. Build new base style data for inherited style updates instead of cloning and mutating installed computed properties. Element-specific computed style adjustments now run before publication, while animation and transition updates continue to mutate only the animated overlay.
93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <andreas@ladybird.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/Optional.h>
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#include <LibGfx/Forward.h>
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#include <LibWeb/HTML/HTMLElement.h>
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#include <LibWeb/Painting/DisplayListResourceIds.h>
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#include <LibWeb/WebIDL/Types.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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GC_DECLARE_ALLOCATOR(HTMLCanvasElement);
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public:
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static constexpr bool OVERRIDES_FINALIZE = true;
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using RenderingContext = Variant<GC::Ref<CanvasRenderingContext2D>, GC::Ref<WebGL::WebGLRenderingContext>, GC::Ref<WebGL::WebGL2RenderingContext>, Empty>;
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virtual ~HTMLCanvasElement() override;
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Gfx::IntSize bitmap_size_for_canvas(size_t minimum_width = 0, size_t minimum_height = 0) const;
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JS::ThrowCompletionOr<RenderingContext> get_context(String const& type, JS::Value options);
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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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JS::ThrowCompletionOr<HasOrCreatedContext> create_2d_context(JS::Value options);
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WebIDL::UnsignedLong width() const;
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WebIDL::UnsignedLong height() const;
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void set_width(WebIDL::UnsignedLong);
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void set_height(WebIDL::UnsignedLong);
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virtual void attribute_changed(FlyString const& local_name, Optional<String> const& old_value, Optional<String> const& value, Optional<FlyString> const& namespace_) override;
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WebIDL::ExceptionOr<String> to_data_url(StringView type, Optional<JS::Value> quality);
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WebIDL::ExceptionOr<void> to_blob(GC::Ref<WebIDL::CallbackType> callback, StringView type, Optional<JS::Value> quality);
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bool is_origin_clean() const;
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RefPtr<Gfx::Bitmap> get_bitmap_from_surface();
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void prepare_for_compositing();
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void notify_compositor_backing_storage_lost();
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void set_canvas_content_dirty();
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GC::Ptr<HTML::CanvasRenderingContext2D> canvas_rendering_context_2d() const
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{
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if (auto const* context = m_context.get_pointer<GC::Ref<HTML::CanvasRenderingContext2D>>())
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return *context;
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return nullptr;
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}
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Optional<Painting::CanvasId> canvas_id() const;
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Optional<Gfx::IntSize> canvas_surface_content_size() const;
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void ensure_backing_storage();
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void notify_compositor_connection_lost();
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CSS::ComputationContext canvas_font_computation_context();
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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 finalize() override;
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virtual void visit_edges(Cell::Visitor&) override;
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virtual bool is_presentational_hint(FlyString const&) const override;
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virtual void apply_presentational_hints(Vector<CSS::StyleProperty>&) const override;
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virtual RefPtr<Layout::Node> create_layout_node(CSS::ComputedProperties const&) override;
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virtual void adjust_computed_style(CSS::ComputedProperties::Builder&) override;
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template<typename ContextType>
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JS::ThrowCompletionOr<HasOrCreatedContext> create_webgl_context(JS::Value options);
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WebGL::WebGLRenderingContextBase* webgl_context() const;
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void reset_context_to_default_state();
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void notify_context_about_canvas_size_change();
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Variant<GC::Ref<HTML::CanvasRenderingContext2D>, GC::Ref<WebGL::WebGLRenderingContext>, GC::Ref<WebGL::WebGL2RenderingContext>, Empty> m_context;
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bool m_canvas_content_dirty { false };
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};
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}
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