tic_tac_toe.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Simple TIC TAC TOE Qt5 application
"""

from PyQt5.QtCore import (QLineF, QPointF, QRectF, Qt)
from PyQt5.QtGui import (QBrush, QColor, QPainter)
from PyQt5.QtWidgets import (QApplication, QGraphicsView, QGraphicsScene, QGraphicsItem,
                             QGridLayout, QVBoxLayout, QHBoxLayout,
                             QLabel, QLineEdit, QPushButton)

class TicTacToe(QGraphicsItem):
    def __init__(self):
        super(TicTacToe, self).__init__()
        self.board = [[-1, -1, -1],[-1, -1, -1], [-1, -1, -1]]
        self.O = 0
        self.X = 1
        self.turn = self.O

    def reset(self):
        for y in range(3):
            for x in range(3):
                self.board[y][x] = -1
        self.turn = self.O
        self.update()

    def select(self, x, y):
        if x < 0 or y < 0 or x >= 3 or y >= 3:
            return
        if self.board[y][x] == -1:
            self.board[y][x] = self.turn
            self.turn = 1 - self.turn

    def paint(self, painter, option, widget):
        painter.setPen(Qt.black)
        painter.drawLine(0,100,300,100)
        painter.drawLine(0,200,300,200)
        painter.drawLine(100,0,100,300)
        painter.drawLine(200,0,200,300)

        for y in range(3):
            for x in range(3):
                if self.board[y][x] == self.O:
                    painter.setPen(Qt.red)
                    painter.drawEllipse(QPointF(50+x*100, 50+y*100), 30, 30)
                elif self.board[y][x] == self.X:
                    painter.setPen(Qt.blue)
                    painter.drawLine(20+x*100, 20+y*100, 80+x*100, 80+y*100)
                    painter.drawLine(20+x*100, 80+y*100, 80+x*100, 20+y*100)

    def boundingRect(self):
        return QRectF(0,0,300,300)

    def mousePressEvent(self, event):
        pos = event.pos()
        self.select(int(pos.x()/100), int(pos.y()/100))
        self.update()
        super(TicTacToe, self).mousePressEvent(event)

class MainWindow(QGraphicsView):
    def __init__(self):
        super(MainWindow, self).__init__()
        scene = QGraphicsScene(self)
        self.tic_tac_toe = TicTacToe()
        scene.addItem(self.tic_tac_toe)
        scene.setSceneRect(0, 0, 300, 300)
        self.setScene(scene)
        self.setCacheMode(QGraphicsView.CacheBackground)
        self.setWindowTitle("Tic Tac Toe")

    def keyPressEvent(self, event):
        key = event.key()
        if key == Qt.Key_R:
            self.tic_tac_toe.reset()
        super(MainWindow, self).keyPressEvent(event)

if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    mainWindow = MainWindow()

    mainWindow.show()
    sys.exit(app.exec_())