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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/

/***************************************************************************
*   Copyright (C) 2007 by Franz Schmid                                     *
*   franz.schmid@altmuehlnet.de                                            *
*                                                                          *
*   This program is free software; you can redistribute it and/or modify   *
*   it under the terms of the GNU General Public License as published by   *
*   the Free Software Foundation; either version 2 of the License, or      *
*   (at your option) any later version.                                    *
*                                                                          *
*   This program 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 General Public License for more details.                           *
*                                                                          *
*   You should have received a copy of the GNU General Public License      *
*   along with this program; if not, write to the                          *
*   Free Software Foundation, Inc.,                                        *
*   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.              *
****************************************************************************/


#ifndef LENSDIALOG_H
#define LENSDIALOG_H

#include <QDialog>
#include <QList>
#include <QPainterPath>
#include <QGraphicsItem>
#include <QGraphicsRectItem>
#include <QGraphicsPathItem>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsSceneHoverEvent>
#include "ui_lensdialogbase.h"
#include "pluginapi.h"
#include "scribusdoc.h"
#include "scribus.h"
class LensDialog;

class PLUGIN_API LensItem : public QGraphicsRectItem
{
public:
        LensItem(QRectF geom, LensDialog *parent);
        ~LensItem() {};
        void setStrength(double s);
        void updateEffect();
        QPainterPath lensDeform(const QPainterPath &source, const QPointF &offset, double m_radius, double s);
        void paint(QPainter *painter, const QStyleOptionGraphicsItem *item, QWidget *widget);
        double strength;
        double scaling;
        int handle;
        QPointF mousePoint;
protected:
        QVariant itemChange(GraphicsItemChange change, const QVariant &value);
        void mousePressEvent(QGraphicsSceneMouseEvent *event);
        void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
        void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
        void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
        void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
        void hoverLeaveEvent(QGraphicsSceneHoverEvent *);
        LensDialog *dialog;
};

class PLUGIN_API LensDialog : public QDialog, Ui::LensDialogBase
{
        Q_OBJECT

public:
        LensDialog(QWidget* parent, ScribusDoc *doc);
        ~LensDialog() {};
        void addItemsToScene(Selection* itemSelection, ScribusDoc *doc, QGraphicsPathItem* parentItem, PageItem* parent);
        void lensSelected(LensItem *item);
        void setLensPositionValues(QPointF p);
        QGraphicsScene scene;
        QList<QPainterPath> origPath;
        QList<QGraphicsPathItem*> origPathItem;
        QList<PageItem*> origPageItem;
        QList<LensItem*> lensList;
        int currentLens;
        bool isFirst;

protected:
        void showEvent(QShowEvent *e);

private slots:
        void doZoomIn();
        void doZoomOut();
        void addLens();
        void removeLens();
        void changeLens();
        void selectionHasChanged();
        void setNewLensX(double x);
        void setNewLensY(double y);
        void setNewLensRadius(double radius);
        void setNewLensStrength(double s);
};

#endif