Source/WebCore/css/typedom/transform/CSSPerspective.h

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(CSS_TYPED_OM)

#include "CSSNumericValue.h"
#include "CSSTransformComponent.h"

namespace WebCore {

template<typename> class ExceptionOr;
class CSSKeywordValue;
using CSSPerspectiveValue = std::variant<RefPtr<CSSNumericValue>, String, RefPtr<CSSKeywordValue>>;

class CSSPerspective : public CSSTransformComponent {
    WTF_MAKE_ISO_ALLOCATED(CSSPerspective);
public:
    static ExceptionOr<Ref<CSSPerspective>> create(CSSPerspectiveValue);
    
    const CSSPerspectiveValue& length() const { return m_length; }
    ExceptionOr<void> setLength(CSSPerspectiveValue);

    void serialize(StringBuilder&) const final;
    ExceptionOr<Ref<DOMMatrix>> toMatrix() final;
    
    CSSTransformType getType() const final { return CSSTransformType::Perspective; }

private:
    CSSPerspective(CSSPerspectiveValue);

    void setIs2D(bool);

    CSSPerspectiveValue m_length;
};
    
} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CSSPerspective)
    static bool isType(const WebCore::CSSTransformComponent& transform) { return transform.getType() == WebCore::CSSTransformType::Perspective; }
SPECIALIZE_TYPE_TRAITS_END()

#endif