AutoTableLayout.h   [plain text]

/*
 * Copyright (C) 2002 Lars Knoll (knoll@kde.org)
 *           (C) 2002 Dirk Mueller (mueller@kde.org)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#pragma once

#include "LayoutUnit.h"
#include "Length.h"
#include "TableLayout.h"
#include <wtf/Vector.h>

namespace WebCore {

class RenderTable;
class RenderTableCell;

class AutoTableLayout final : public TableLayout {
public:
    explicit AutoTableLayout(RenderTable*);
    virtual ~AutoTableLayout();

    void computeIntrinsicLogicalWidths(LayoutUnit& minWidth, LayoutUnit& maxWidth) override;
    LayoutUnit scaledWidthFromPercentColumns() const override { return m_scaledWidthFromPercentColumns; }
    void applyPreferredLogicalWidthQuirks(LayoutUnit& minWidth, LayoutUnit& maxWidth) const override;
    void layout() override;

private:
    void fullRecalc();
    void recalcColumn(unsigned effCol);

    float calcEffectiveLogicalWidth();

    void insertSpanCell(RenderTableCell*);

    struct Layout {
        Length logicalWidth;
        Length effectiveLogicalWidth;
        float minLogicalWidth { 0 };
        float maxLogicalWidth { 0 };
        float effectiveMinLogicalWidth { 0 };
        float effectiveMaxLogicalWidth { 0 };
        float computedLogicalWidth { 0 };
        bool emptyCellsOnly { true };
    };

    Vector<Layout> m_layoutStruct;
    Vector<RenderTableCell*> m_spanCells;
    bool m_hasPercent : 1;
    mutable bool m_effectiveLogicalWidthDirty : 1;
    LayoutUnit m_scaledWidthFromPercentColumns;
};

} // namespace WebCore