mandelbrotwidget.h

qt-x11-opensource-src-4.1.4.tar.gz源码

/****************************************************************************
**
** Copyright (C) 2004-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at [e-mail].
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef MANDELBROTWIDGET_H
#define MANDELBROTWIDGET_H

#include <QPixmap>
#include <QWidget>

#include "renderthread.h"

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);

private:
    void zoom(double zoomFactor);
    void scroll(int deltaX, int deltaY);

    RenderThread thread;
    QPixmap pixmap;
    QPoint pixmapOffset;
    QPoint lastDragPos;
    double centerX;
    double centerY;
    double pixmapScale;
    double curScale;
};

#endif