demos/qtdemo/mainwindow.h

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  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