/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef MANDELBROTWIDGET_H
#define MANDELBROTWIDGET_H

#include <QPixmap>
#include <QWidget>
#include "renderthread.h"

#if defined(Q_WS_S60) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
#include <QPushButton>

class ZoomButton : public QPushButton
{
    Q_OBJECT
public:
    ZoomButton(const QString &text, double zoomFactor, QWidget *parent = NULL)
        : QPushButton(text, parent), m_ZoomFactor(zoomFactor)
    {
        connect(this, SIGNAL(clicked()), this, SLOT(handleClick()));
    }

signals:
    void zoom(double zoomFactor);

private slots:
    void handleClick()
    {
        emit zoom(m_ZoomFactor);
    }

private:
    const double m_ZoomFactor;
};
#endif

//! [0]
class MandelbrotWidget : public QWidget
{
    Q_OBJECT

public:
    MandelbrotWidget(QWidget *parent = 0);

protected:
    void paintEvent(QPaintEvent *event);
    void resizeEvent(QResizeEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void wheelEvent(QWheelEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);

private slots:
    void updatePixmap(const QImage &image, double scaleFactor);
    void zoom(double zoomFactor);

private:
    void scroll(int deltaX, int deltaY);

    RenderThread thread;
    QPixmap pixmap;
    QPoint pixmapOffset;
    QPoint lastDragPos;
    double centerX;
    double centerY;
    double pixmapScale;
    double curScale;
};
//! [0]

#endif
