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/* This file is part of the KDE project
* Copyright (C) 2007, 2009, 2010 Thomas Zander <zander@kde.org>
* Copyright (C) 2011 Matus Hanzes <matus.hanzes@ixonos.com>
*
* 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 FLOATINGANCHORSTRATEGY_H
#define FLOATINGANCHORSTRATEGY_H
#include "AnchorStrategy.h"
class KoTextLayoutRootArea;
class KoTextShapeData;
class QTextBlock;
class QTextLayout;
class KoTextLayoutObstruction;
class KoAnchorTextRange;
class FloatingAnchorStrategy : public AnchorStrategy
{
public:
FloatingAnchorStrategy(KoAnchorTextRange *anchor, KoTextLayoutRootArea *rootArea);
~FloatingAnchorStrategy() override;
/**
* This moves the subject (i.e. shape when used with flake) of the anchor.
*
* @return true if subject was moved
*/
bool moveSubject() override;
private:
inline bool countHorizontalRel(QRectF &anchorBoundingRect, const QRectF &containerBoundingRect,
QTextBlock &block, QTextLayout *layout);
inline void countHorizontalPos(QPointF &newPosition, const QRectF &anchorBoundingRect);
inline bool countVerticalRel(QRectF &anchorBoundingRect, const QRectF &containerBoundingRect,
KoTextShapeData *data, QTextBlock &block, QTextLayout *layout);
inline void countVerticalPos(QPointF &newPosition, const QRectF &anchorBoundingRect);
//check the layout environment and move the shape back to have it within
inline void checkLayoutEnvironment(QPointF &newPosition, KoTextShapeData *data);
//check the border of page and move the shape back to have it visible
inline void checkPageBorder(QPointF &newPosition);
//check stacking and reorder to proper position objects according to there z-index
inline void checkStacking(QPointF &newPosition);
void updateObstruction(qreal documentOffset);
KoTextLayoutObstruction *m_obstruction; // the obstruction representation of the subject
KoAnchorTextRange *m_anchorRange;
};
#endif // FLOATINGANCHORSTRATEGY_H
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