/**
 * This file is a part of LuminanceHDR package.
 * ---------------------------------------------------------------------- 
 * Copyright (C) 2006,2007 Giuseppe Rota
 * 
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * ---------------------------------------------------------------------- 
 *
 * @author Giuseppe Rota <grota@users.sourceforge.net>
 *
 */

#ifndef PANICONWIDGET_H
#define PANICONWIDGET_H

#include <QFrame>

class PanIconWidget : public QFrame
{
Q_OBJECT
public:
    PanIconWidget(QWidget *parent=0, Qt::WindowFlags flags=Qt::Popup);
    ~PanIconWidget();
    void setImage(const QImage * fullsize_zoomed_image);
    void popup(const QPoint &pos);
    void setRegionSelection(QRect regionSelection);
    void setMouseFocus(void);
    void setCursorToLocalRegionSelectionCenter(void);
signals:
    //void signalSelectionMoved( QRect rect, bool targetDone );
    void selectionMoved( QRect rect );
    void signalHidden(void);
    void finished();

public slots:
protected:
	void paintEvent(QPaintEvent *);
	void mousePressEvent(QMouseEvent *);
	void mouseReleaseEvent(QMouseEvent *);
	void mouseMoveEvent(QMouseEvent *);
private:
	/** Recalculate the target selection position and emit 'selectionMoved'.*/
	void regionSelectionMoved( );
	//coordinates relative to this widget
	int      xpos;
	int      ypos;
	bool     moveSelection;
	QRect    regionSelection;  // Original size image selection.
	QRect    m_localRegionSelection; // Thumbnail size selection.
	int      m_width;
	int      m_height;
	int      m_orgWidth;
	int      m_orgHeight;
	QImage  *m_image;
};
#endif
