# -*- coding: utf-8 -*-
"""
Created on Mon Apr  2 17:02:47 2018

@author: Kergadon
"""

#!/usr/bin/env python

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


class node(QGraphicsEllipseItem):
    def __init__(self):
        super(node,self).__init__()
        self.num=0
        self.setBrush(QBrush(Qt.green,Qt.SolidPattern))
    def mousePressEvent(self, event):
        print('clicked')
        pos = event.pos()
        self.update()
        self.setBrush(QBrush(Qt.red,Qt.SolidPattern))
        super(node, self).mousePressEvent(event)


class inverter(QGraphicsLineItem):
    def __init__(self):
        super(inverter,self).__init__()
        pen=QPen(Qt.red,Qt.SolidLine)
        pen.setWidth(6)
        self.setPen(pen)
        self.setLine(30, 50, 300, 300)
    def mousePressEvent(self, event):
        print('clicked')
        pos = event.pos()
        self.update()

        super(inverter, self).mousePressEvent(event)
class MainWindow(QGraphicsView):
    def __init__(self):
        super(MainWindow, self).__init__()
        scene = QGraphicsScene(self)
        self.nodes=[node(),node(),node()]
        self.nodes[0].num=1
        self.nodes[1].num=2
        self.nodes[2].num=3
        for n in self.nodes:
            scene.addItem(n)


        self.nodes[0].setRect(20,40,20,20)
        self.nodes[1].setRect(20,80,20,20)
        self.nodes[2].setRect(20,120,20,20)
        self.line1=inverter()
        scene.addItem(self.line1)
        scene.setSceneRect(0, 0, 500, 500)
        self.setScene(scene)
        self.setCacheMode(QGraphicsView.CacheBackground)
        self.setWindowTitle("Node Diagram")

    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_())