Source/WebCore/layout/displaytree/DisplayInlineContent.h

/*
 * Copyright (C) 2019 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 "DisplayRun.h"
#include "InlineLineBox.h"
#include <wtf/IteratorRange.h>
#include <wtf/Vector.h>

namespace WebCore {
namespace Display {

struct InlineContent : public RefCounted<InlineContent> {
    using Runs = Vector<Run, 10>;
    using LineBoxes = Vector<Layout::LineBox, 5>;

    Runs runs;
    LineBoxes lineBoxes;

    const Layout::LineBox& lineBoxForRun(const Run& run) const { return lineBoxes[run.lineIndex()]; }
    WTF::IteratorRange<const Run*> runsForRect(const LayoutRect&) const;
};

inline WTF::IteratorRange<const Run*> InlineContent::runsForRect(const LayoutRect& rect) const
{
    // FIXME: Do something efficient.
    const Run* first = nullptr;
    for (auto& run : runs) {
        LayoutRect runRect = run.logicalRect();
        if (runRect.intersects(rect)) {
            first = &run;
            break;
        }
    }
    if (!first)
        return { nullptr, nullptr };

    const Run* last = nullptr;
    for (auto& run : WTF::makeReversedRange(runs)) {
        LayoutRect runRect = run.logicalRect();
        if (runRect.intersects(rect)) {
            last = &run;
            break;
        }
    }

    return { first, last + 1 };
}

}
}

#endif