/****************************************************************************
**
** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#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;
    QSize minimumSizeHint() const;

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

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

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

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
