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/* This file is part of the KDE project
* Copyright (C) 2006-2007 Thomas Zander <zander@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, 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 SHAPESHEARSTRATEGY_H
#define SHAPESHEARSTRATEGY_H
#include <KoInteractionStrategy.h>
#include <KoFlake.h>
#include <QPointF>
#include <QSizeF>
#include <QTransform>
class KoToolBase;
class KoShape;
/**
* A strategy for the KoInteractionTool.
* This strategy is invoked when the user starts a shear of a selection of objects,
* the strategy will then shear the objects interactively and provide a command afterwards.
*/
class ShapeShearStrategy : public KoInteractionStrategy
{
public:
/**
* Constructor that starts to rotate the objects.
* @param tool the parent tool which controls this strategy
* @param clicked the initial point that the user depressed (in pt).
* @param direction the handle that was grabbed
*/
ShapeShearStrategy( KoToolBase *tool, const QPointF &clicked, KoFlake::SelectionHandle direction );
~ShapeShearStrategy() override {}
void handleMouseMove(const QPointF &mouseLocation, Qt::KeyboardModifiers modifiers) override;
KUndo2Command* createCommand() override;
void finishInteraction( Qt::KeyboardModifiers modifiers ) override { Q_UNUSED( modifiers ); }
void paint( QPainter &painter, const KoViewConverter &converter) override;
private:
QPointF m_start;
QPointF m_solidPoint;
QSizeF m_initialSize;
bool m_top, m_left, m_bottom, m_right;
qreal m_initialSelectionAngle;
QTransform m_shearMatrix;
bool m_isMirrored;
QVector<QTransform> m_oldTransforms;
QTransform m_initialSelectionMatrix;
QList<KoShape*> m_selectedShapes;
};
#endif
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