Qt 5.11 | Qt Widgets | Tetrix Example | tetrixwindow.cpp Example File

Qt 5.11.3 Reference Documentation

# tetrixwindow.cpp Example File

widgets/tetrix/tetrixwindow.cpp

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      #include <QtWidgets>

      #include "tetrixboard.h"
      #include "tetrixwindow.h"

      TetrixWindow::TetrixWindow()
      {
          board = new TetrixBoard;

          nextPieceLabel = new QLabel;
          nextPieceLabel->setFrameStyle(QFrame::Box | QFrame::Raised);
          nextPieceLabel->setAlignment(Qt::AlignCenter);
          board->setNextPieceLabel(nextPieceLabel);

          scoreLcd = new QLCDNumber(5);
          scoreLcd->setSegmentStyle(QLCDNumber::Filled);
          levelLcd = new QLCDNumber(2);
          levelLcd->setSegmentStyle(QLCDNumber::Filled);
          linesLcd = new QLCDNumber(5);
          linesLcd->setSegmentStyle(QLCDNumber::Filled);

          startButton = new QPushButton(tr("&Start"));
          startButton->setFocusPolicy(Qt::NoFocus);
          quitButton = new QPushButton(tr("&Quit"));
          quitButton->setFocusPolicy(Qt::NoFocus);
          pauseButton = new QPushButton(tr("&Pause"));
          pauseButton->setFocusPolicy(Qt::NoFocus);

          connect(startButton, &QPushButton::clicked, board, &TetrixBoard::start);
          connect(quitButton , &QPushButton::clicked, qApp, &QApplication::quit);
          connect(pauseButton, &QPushButton::clicked, board, &TetrixBoard::pause);
      #if __cplusplus >= 201402L
          connect(board, &TetrixBoard::scoreChanged,
                  scoreLcd, qOverload<int>(&QLCDNumber::display));
          connect(board, &TetrixBoard::levelChanged,
                  levelLcd, qOverload<int>(&QLCDNumber::display));
          connect(board, &TetrixBoard::linesRemovedChanged,
                  linesLcd, qOverload<int>(&QLCDNumber::display));
      #else
          connect(board, &TetrixBoard::scoreChanged,
                  scoreLcd, QOverload<int>::of(&QLCDNumber::display));
          connect(board, &TetrixBoard::levelChanged,
                  levelLcd, QOverload<int>::of(&QLCDNumber::display));
          connect(board, &TetrixBoard::linesRemovedChanged,
                  linesLcd, QOverload<int>::of(&QLCDNumber::display));
      #endif

          QGridLayout *layout = new QGridLayout;
          layout->addWidget(createLabel(tr("NEXT")), 0, 0);
          layout->addWidget(nextPieceLabel, 1, 0);
          layout->addWidget(createLabel(tr("LEVEL")), 2, 0);
          layout->addWidget(levelLcd, 3, 0);
          layout->addWidget(startButton, 4, 0);
          layout->addWidget(board, 0, 1, 6, 1);
          layout->addWidget(createLabel(tr("SCORE")), 0, 2);
          layout->addWidget(scoreLcd, 1, 2);
          layout->addWidget(createLabel(tr("LINES REMOVED")), 2, 2);
          layout->addWidget(linesLcd, 3, 2);
          layout->addWidget(quitButton, 4, 2);
          layout->addWidget(pauseButton, 5, 2);
          setLayout(layout);

          setWindowTitle(tr("Tetrix"));
          resize(550, 370);
      }

      QLabel *TetrixWindow::createLabel(const QString &text)
      {
          QLabel *label = new QLabel(text);
          label->setAlignment(Qt::AlignHCenter | Qt::AlignBottom);
          return label;
      }