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#include "tetrixboard.h"

#include <QtGui>

Q_DECLARE_METATYPE(QPainter*)

TetrixBoard::TetrixBoard(QWidget *parent)

    : QFrame(parent)

{

    timer = new QTimer(this);

    qMetaTypeId<QPainter*>();

}

void TetrixBoard::setNextPieceLabel(QWidget *label)

{

    nextPieceLabel = qobject_cast<QLabel*>(label);

}

QObject *TetrixBoard::getTimer()

{

    return timer;

}

QSize TetrixBoard::minimumSizeHint() const

{

    return QSize(BoardWidth * 5 + frameWidth() * 2,

                 BoardHeight * 5 + frameWidth() * 2);

}

void TetrixBoard::paintEvent(QPaintEvent *event)

{

    QFrame::paintEvent(event);

    QPainter painter(this);

    painter.drawImage(0, 0, image);

}

void TetrixBoard::keyPressEvent(QKeyEvent *event)

{

    emit keyPressed(event->key());

}

void TetrixBoard::showNextPiece(int width, int height)

{

    if (!nextPieceLabel)

        return;

    QPixmap pixmap(width * squareWidth(), height * squareHeight());

    QPainter painter(&pixmap);

    painter.fillRect(pixmap.rect(), nextPieceLabel->palette().background());

    emit paintNextPieceRequested(&painter);

    nextPieceLabel->setPixmap(pixmap);

}

void TetrixBoard::drawPauseScreen(QPainter *painter)

{

    painter->drawText(contentsRect(), Qt::AlignCenter, tr("Pause"));

}

void TetrixBoard::drawSquare(QPainter *painter, int x, int y, int shape)

{

    static const QRgb colorTable[8] = {

        0x000000, 0xCC6666, 0x66CC66, 0x6666CC,

        0xCCCC66, 0xCC66CC, 0x66CCCC, 0xDAAA00

    };

    x = x*squareWidth();

    y = y*squareHeight();

    QColor color = colorTable[shape];

    painter->fillRect(x + 1, y + 1, squareWidth() - 2, squareHeight() - 2,

                      color);

    painter->setPen(color.light());

    painter->drawLine(x, y + squareHeight() - 1, x, y);

    painter->drawLine(x, y, x + squareWidth() - 1, y);

    painter->setPen(color.dark());

    painter->drawLine(x + 1, y + squareHeight() - 1,

                      x + squareWidth() - 1, y + squareHeight() - 1);

    painter->drawLine(x + squareWidth() - 1, y + squareHeight() - 1,

                      x + squareWidth() - 1, y + 1);

}

void TetrixBoard::update()

{

    QRect rect = contentsRect();

    if (image.size() != rect.size())

        image = QImage(rect.size(), QImage::Format_ARGB32_Premultiplied);

    image.fill(qRgba(0,0,0,0));

    QPainter painter;

    painter.begin(&image);

    int boardTop = rect.bottom() - BoardHeight*squareHeight();

    painter.translate(rect.left(), boardTop);

    emit paintRequested(&painter);

    QFrame::update();

}