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/* This file is part of the KDE project
* Copyright (C) 2006-2007, 2010 Thomas Zander <zander@kde.org>
* Copyright (C) 2010 Ko Gmbh <cbo@kogmbh.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 KOTEXTLAYOUTOBSTRUCTION_H
#define KOTEXTLAYOUTOBSTRUCTION_H
#include "kritatextlayout_export.h"
#include <QMultiMap>
#include <QPolygonF>
#include <QRectF>
#include <QLineF>
class KoShape;
class QTransform;
class QPainterPath;
/// Class that allows us with the runaround of QPainterPaths
class KRITATEXTLAYOUT_EXPORT KoTextLayoutObstruction
{
public:
KoTextLayoutObstruction(KoShape *shape, const QTransform &matrix);
KoTextLayoutObstruction(const QRectF &rect, bool rtl);
void init(const QTransform &matrix, const QPainterPath &obstruction, qreal distanceLeft, qreal distanceTop, qreal distanceRight, qreal distanceBottom, qreal borderHalfWidth);
QRectF limit(const QRectF &content);
KoShape *shape() const { return m_shape; }
static qreal xAtY(const QLineF &line, qreal y);
void changeMatrix(const QTransform &matrix);
//-------------------------------------------------------------------------------
QRectF cropToLine(const QRectF &lineRect);
QRectF getLeftLinePart(const QRectF &lineRect) const;
QRectF getRightLinePart(const QRectF &lineRect) const;
bool textOnLeft() const;
bool textOnRight() const;
bool textOnBiggerSide() const;
bool textOnEnoughSides() const;
bool noTextAround() const;
// Don't run around unless available space is > than this when m_side == Enough.
qreal runAroundThreshold() const;
static bool compareRectLeft(KoTextLayoutObstruction *o1, KoTextLayoutObstruction *o2);
private:
QPainterPath decoratedOutline(const KoShape *shape, qreal &borderHalfWidth) const;
enum Side { None, Left, Right, Empty, Both, Bigger, Enough };
Side m_side;
QRectF m_bounds;
QPolygonF m_polygon;
public:
QRectF m_line;
QMultiMap<qreal, QLineF> m_edges; //sorted with y-coord
KoShape *m_shape;
QRectF m_rect;
qreal m_distanceLeft;
qreal m_distanceTop;
qreal m_distanceRight;
qreal m_distanceBottom;
qreal m_borderHalfWidth;
qreal m_runAroundThreshold;
};
#endif
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