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     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the demonstration applications of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #ifndef MAIN_WINDOW_H

    43 #define MAIN_WINDOW_H

    44 

    45 #include <QtGui>

    46 #include <QPixmap>

    47 

    48 class DemoTextItem;

    49 class ImageItem;

    50 

    51 class MainWindow : public QGraphicsView

    52 {

    53     Q_OBJECT

    54 

    55 public:

    56     MainWindow(QWidget *parent = 0);

    57     ~MainWindow();

    58     void enableMask(bool enable);

    59     void toggleFullscreen();

    60     int performBenchmark();

    61     void switchTimerOnOff(bool on);

    62     void start();

    63 

    64     QGraphicsScene *scene;

    65     bool loop;

    66 

    67     // FPS stuff:

    68     QList<QTime> frameTimeList;

    69     QList<float> fpsHistory;

    70     float currentFps;

    71     float fpsMedian;

    72     DemoTextItem *fpsLabel;

    73 

    74 protected:

    75     // Overidden methods:

    76     void showEvent(QShowEvent *event);

    77     void keyPressEvent(QKeyEvent *event);

    78     void resizeEvent(QResizeEvent *event);

    79     void drawBackground(QPainter *painter, const QRectF &rect);

    80     void drawItems(QPainter *painter, int numItems, QGraphicsItem ** items, const QStyleOptionGraphicsItem* options);

    81     void focusInEvent(QFocusEvent *event);

    82     void focusOutEvent(QFocusEvent *event);

    83 

    84 private slots:

    85     void tick();

    86 

    87 private:

    88     void setupWidget();

    89     void setupSceneItems();

    90     void drawBackgroundToPixmap();

    91     void setupScene();

    92     bool measureFps();

    93     void forceFpsMedianCalculation();

    94     void checkAdapt();

    95     void setRenderingSystem();

    96 

    97     QTimer updateTimer;

    98     QTime demoStartTime;

    99     QTime fpsTime;

   100     QPixmap background;

   101     ImageItem *companyLogo;

   102     ImageItem *qtLogo;

   103     bool doneAdapt;

   104     bool useTimer;

   105     DemoTextItem *pausedLabel;

   106 };

   107 

   108 #endif // MAIN_WINDOW_H

   109