e90752cc21
This partially implements CSS-Animations-1 (though there are references to CSS-Animations-2). Current limitations: - Multi-selector keyframes are not supported. - Most animation properties are ignored. - Timing functions are not applied. - Non-absolute values are not interpolated unless the target is also of the same non-absolute type (e.g. 10% -> 25%, but not 10% -> 20px). - The JavaScript interface is left as an exercise for the next poor soul looking at this code. With those said, this commit implements: - Interpolation for most common types - Proper keyframe resolution (including the synthetic from-keyframe containing the initial state) - Properly driven animations, and proper style invalidation Co-Authored-By: Andreas Kling <kling@serenityos.org>
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/*
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* Copyright (c) 2023, Ali Mohammad Pur <mpfard@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/NonnullRefPtr.h>
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#include <LibWeb/CSS/CSSRule.h>
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#include <LibWeb/CSS/CSSStyleDeclaration.h>
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#include <LibWeb/CSS/Percentage.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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// https://drafts.csswg.org/css-animations/#interface-csskeyframerule
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class CSSKeyframeRule final : public CSSRule {
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WEB_PLATFORM_OBJECT(CSSKeyframeRule, CSSRule);
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public:
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<CSSKeyframeRule>> create(JS::Realm& realm, CSS::Percentage key, CSSStyleDeclaration& declarations)
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{
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return MUST_OR_THROW_OOM(realm.heap().allocate<CSSKeyframeRule>(realm, realm, key, declarations));
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}
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virtual ~CSSKeyframeRule() = default;
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virtual Type type() const override { return Type::Keyframe; };
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CSS::Percentage key() const { return m_key; }
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JS::NonnullGCPtr<CSSStyleDeclaration> style() const { return m_declarations; }
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private:
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CSSKeyframeRule(JS::Realm& realm, CSS::Percentage key, CSSStyleDeclaration& declarations)
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: CSSRule(realm)
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, m_key(key)
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, m_declarations(declarations)
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{
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}
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virtual void visit_edges(Visitor&) override;
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virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
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virtual DeprecatedString serialized() const override;
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CSS::Percentage m_key;
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JS::NonnullGCPtr<CSSStyleDeclaration> m_declarations;
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};
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template<>
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inline bool CSSRule::fast_is<CSSKeyframeRule>() const { return type() == CSSRule::Type::Keyframe; }
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}
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