Qt 4.8: tetrixboard.h Example File (script/qstetrix/tetrixboard.h)

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# tetrixboard.h Example File

script/qstetrix/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
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of The Qt Company Ltd nor the names of its
     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     #ifndef TETRIXBOARD_H
     #define TETRIXBOARD_H

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

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

     public:
         TetrixBoard(QWidget *parent = 0);

         void setNextPieceLabel(QWidget *label);
         QLabel *nextPieceLabel() const;
         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);
         void update();

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

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

         QTimer *timer;
         QPointer<QLabel> nextPieceLbl;
         QImage image;
     };

     #endif