/****************************************************************************
**
** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by Trolltech ASA
** (or its successors, if any) and the KDE Free Qt Foundation. 
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
** you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** In addition, as a special exception, Trolltech, as the sole
** copyright holder for Qt Designer, grants users of the Qt/Eclipse
** Integration plug-in the right for the Qt/Eclipse Integration to
** link to functionality provided by Qt Designer and its related
** libraries.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
** granted herein.
**
** 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 MAIN_WINDOW_H
#define MAIN_WINDOW_H

#include <QtGui>
#include <QPixmap>

class DemoTextItem;
class ImageItem;

class MainWindow : public QGraphicsView
{
    Q_OBJECT
    
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
    void enableMask(bool enable);
    void toggleFullscreen();
    int performBenchmark();    
    void switchTimerOnOff(bool on);
    void start();
    
    QGraphicsScene *scene;
    bool loop;

    // FPS stuff:
    QList<QTime> frameTimeList;
    QList<float> fpsHistory;
    float currentFps;
    float fpsMedian;
    DemoTextItem *fpsLabel;

protected:
    // Overidden methods:
    void showEvent(QShowEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void resizeEvent(QResizeEvent *event);
    void drawBackground(QPainter *painter, const QRectF &rect);
    void drawItems(QPainter *painter, int numItems, QGraphicsItem ** items, const QStyleOptionGraphicsItem* options);
    
private slots:
    void tick();

private:
    void setupWidget();
    void setupSceneItems();
    void drawBackgroundToPixmap();
    void setupScene();
    bool measureFps();
    void forceFpsMedianCalculation();
    void checkAdapt();
    QTimer updateTimer;
    QTime demoStartTime;
    QTime fpsTime;
    QPixmap background;
    ImageItem *trolltechLogo;
    ImageItem *qtLogo;
    bool doneAdapt;
};

#endif // MAIN_WINDOW_H

