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tetrixboard.h Example File
script/tetrix/tetrixboard.h

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 #ifndef TETRIXBOARD_H
 #define TETRIXBOARD_H

 #include <QTimer>
 #include <QFrame>
 #include <QPointer>

 class QLabel;

 class TetrixBoard : public QFrame
 {
     Q_OBJECT
     Q_PROPERTY(QObject* timer READ getTimer)
     Q_PROPERTY(QWidget* nextPieceLabel WRITE setNextPieceLabel)

 public:
     TetrixBoard(QWidget *parent = 0);

     void setNextPieceLabel(QWidget *label);
     void setBoardWidth(int width);
     void setBoardHeight(int height);
     QSize minimumSizeHint() const;

     QObject *getTimer();

 signals:
     void scoreChanged(int score);
     void levelChanged(int level);
     void linesRemovedChanged(int numLines);

 #if !defined(Q_MOC_RUN)
 private: // can only be emitted by TetrixBoard
 #endif
     void keyPressed(int key);
     void paintRequested(QPainter *painter);
     void paintNextPieceRequested(QPainter *painter);

 protected:
     void paintEvent(QPaintEvent *event);
     void keyPressEvent(QKeyEvent *event);

 protected slots:
     void showNextPiece(int width, int height);
     void drawPauseScreen(QPainter *painter);
     void drawSquare(QPainter *painter, int x, int y, int shape);

 private:
     enum { BoardWidth = 10, BoardHeight = 22 };

     int squareWidth() { return contentsRect().width() / BoardWidth; }
     int squareHeight() { return contentsRect().height() / BoardHeight; }

     QTimer *timer;
     QPointer<QLabel> nextPieceLabel;
 };

 #endif