LayoutReplaced.h   [plain text]

/*
 * Copyright (C) 2018 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. AND ITS CONTRIBUTORS ``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 ITS 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 OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(LAYOUT_FORMATTING_CONTEXT)

#include "LayoutUnit.h"
#include <wtf/IsoMalloc.h>

namespace WebCore {

namespace Layout {
class LayoutBox;

// HTMLAudioElement, HTMLCanvasElement. HTMLEmbedElement, HTMLIFrameElement, HTMLImageElement, HTMLInputElement, HTMLObjectElement, HTMLVideoElement.
class Replaced {
    WTF_MAKE_ISO_ALLOCATED(Replaced);
public:
    friend class LayoutBox;

    bool hasIntrinsicWidth() const { return m_intrinsicWidth.has_value(); }
    bool hasIntrinsicHeight() const { return m_intrinsicHeight.has_value(); }
    bool hasIntrinsicRatio() const { return m_intrinsicRatio.has_value(); }
    LayoutUnit intrinsicWidth() const;
    LayoutUnit intrinsicHeight() const;
    LayoutUnit intrinsicRatio() const;

private:
    Replaced(const LayoutBox&);

    std::optional<LayoutUnit> m_intrinsicWidth;
    std::optional<LayoutUnit> m_intrinsicHeight;
    std::optional<LayoutUnit> m_intrinsicRatio;
};

inline LayoutUnit Replaced::intrinsicWidth() const
{
    ASSERT(hasIntrinsicWidth());
    return m_intrinsicWidth.value_or(LayoutUnit::max());
}

inline LayoutUnit Replaced::intrinsicHeight() const
{
    ASSERT(hasIntrinsicHeight());
    return m_intrinsicHeight.value_or(LayoutUnit::max());
}

inline LayoutUnit Replaced::intrinsicRatio() const
{
    ASSERT(hasIntrinsicRatio());
    return m_intrinsicRatio.value_or(LayoutUnit::max());
}

}
}

#endif