sky/engine/core/rendering/line/LineLayoutState.h

/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved.
 *
 * 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, or (at your option) any later version.
 *
 * 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.
 *
 */

#ifndef SKY_ENGINE_CORE_RENDERING_LINE_LINELAYOUTSTATE_H_
#define SKY_ENGINE_CORE_RENDERING_LINE_LINELAYOUTSTATE_H_

#include "sky/engine/core/rendering/RenderParagraph.h"
#include "sky/engine/platform/geometry/LayoutRect.h"

namespace blink {

// LineLayoutState keeps track of global information
// during an entire linebox tree layout pass (aka RenderParagraph::layoutChildren).
class LineLayoutState {
public:
    LineLayoutState(bool fullLayout)
        : m_endLine(0)
        , m_endLineLogicalTop(0)
        , m_endLineMatched(false)
        , m_hasInlineChild(false)
        , m_isFullLayout(fullLayout)
        , m_adjustedLogicalLineTop(0)
    { }

    void markForFullLayout() { m_isFullLayout = true; }
    bool isFullLayout() const { return m_isFullLayout; }

    bool endLineMatched() const { return m_endLineMatched; }
    void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatched; }

    bool hasInlineChild() const { return m_hasInlineChild; }
    void setHasInlineChild(bool hasInlineChild) { m_hasInlineChild = hasInlineChild; }

    LineInfo& lineInfo() { return m_lineInfo; }
    const LineInfo& lineInfo() const { return m_lineInfo; }

    LayoutUnit endLineLogicalTop() const { return m_endLineLogicalTop; }
    void setEndLineLogicalTop(LayoutUnit logicalTop) { m_endLineLogicalTop = logicalTop; }

    RootInlineBox* endLine() const { return m_endLine; }
    void setEndLine(RootInlineBox* line) { m_endLine = line; }

    LayoutUnit adjustedLogicalLineTop() const { return m_adjustedLogicalLineTop; }
    void setAdjustedLogicalLineTop(LayoutUnit value) { m_adjustedLogicalLineTop = value; }

private:
    RootInlineBox* m_endLine;
    LineInfo m_lineInfo;
    LayoutUnit m_endLineLogicalTop;
    bool m_endLineMatched;
    // FIXME(sky): Do we still need this?
    // Used as a performance optimization to avoid doing a full paint invalidation when our floats
    // change but we don't have any inline children.
    bool m_hasInlineChild;

    bool m_isFullLayout;

    LayoutUnit m_adjustedLogicalLineTop;
};

}

#endif  // SKY_ENGINE_CORE_RENDERING_LINE_LINELAYOUTSTATE_H_