- Qt 5.5
- Qt Widgets
- Tetrix Example
- tetrixboard.h Example File
- Qt 5.5.1 Reference Documentation

# tetrixboard.h Example File

widgets/tetrix/tetrixboard.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
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    **   * Redistributions of source code must retain the above copyright
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    **     from this software without specific prior written permission.
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    #ifndef TETRIXBOARD_H
    #define TETRIXBOARD_H

    #include <QBasicTimer>
    #include <QFrame>
    #include <QPointer>

    #include "tetrixpiece.h"

    class QLabel;

    class TetrixBoard : public QFrame
    {
        Q_OBJECT

    public:
        TetrixBoard(QWidget *parent = 0);

        void setNextPieceLabel(QLabel *label);
        QSize sizeHint() const Q_DECL_OVERRIDE;
        QSize minimumSizeHint() const Q_DECL_OVERRIDE;

    public slots:
        void start();
        void pause();

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

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

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

        TetrixShape &shapeAt(int x, int y) { return board[(y * BoardWidth) + x]; }
        int timeoutTime() { return 1000 / (1 + level); }
        int squareWidth() { return contentsRect().width() / BoardWidth; }
        int squareHeight() { return contentsRect().height() / BoardHeight; }
        void clearBoard();
        void dropDown();
        void oneLineDown();
        void pieceDropped(int dropHeight);
        void removeFullLines();
        void newPiece();
        void showNextPiece();
        bool tryMove(const TetrixPiece &newPiece, int newX, int newY);
        void drawSquare(QPainter &painter, int x, int y, TetrixShape shape);

        QBasicTimer timer;
        QPointer<QLabel> nextPieceLabel;
        bool isStarted;
        bool isPaused;
        bool isWaitingAfterLine;
        TetrixPiece curPiece;
        TetrixPiece nextPiece;
        int curX;
        int curY;
        int numLinesRemoved;
        int numPiecesDropped;
        int score;
        int level;
        TetrixShape board[BoardWidth * BoardHeight];
    };

    #endif