Python-сообщество

 from PyQt5 import QtWidgets
from ui_mainwindow import Ui_MainWindow
from PyQt5.QtCore import Qt, QRect
from PyQt5.QtGui import QBrush, QPen
from PyQt5.QtWidgets import QGraphicsScene
from random import randrange
class mainCanvasScene(QGraphicsScene):
    figures = []
    def __init__(self, parent=None):
        super(QGraphicsScene, self).__init__(parent)
#        QGraphicsScene.__init__(self, parent)
        self.setSceneRect(0, 0, 800, 600)
    def getStartPos(self, mouseEvent):
        self.startx = mouseEvent.x()
        self.starty = mouseEvent.y()
        print('start pos:', self.startx, self.starty)
    def getEndPos(self, mouseEvent):
        self.pen = QPen(Qt.red, 3)
        self.brush = QBrush(Qt.gray)
        self.endx = mouseEvent.x()
        self.endy = mouseEvent.y()
        self.objectWidth = self.endx - self.startx
        self.objectHeight = self.endy - self.starty
        self.update()
        print('end pos:', self.endx, self.endy)
        print('size: ', self.objectWidth, self.objectHeight)
        print()
    def endPaint(self, mouseEvent):
        self.figures.append(self.addEllipse(self.startx, self.starty,
                      self.endx, self.endy,
                      self.pen, self.brush))
#        Ui_MainWindow.listFigures.addItem(self.figures[-1])
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    shapes = []
    shapes.append(1)
    def __init__(self, parent=None):
#        QtWidgets.QWidget.__init__(self, parent)
        super(MainWindow, self).__init__()
        self.setupUi(self)
        self.toolBar.actionTriggered['QAction*'].connect(self.circle.click)
        self.view.scene = mainCanvasScene()
        self.view.setScene(self.view.scene)
        self.view.mousePressEvent = self.view.scene.getStartPos
        self.view.mouseMoveEvent = self.view.scene.getEndPos
        self.view.mouseReleaseEvent = self.view.scene.endPaint
    def on_circle_released(self):
        self.shapes.append(self.view.scene.addEllipse(randrange(0, 700),
                                                      randrange(0, 700),
                                                      randrange(50, 200),
                                                      randrange(50, 200),
                                                      QPen(Qt.darkGreen, 3),
                                                      QBrush(Qt.gray)))
        self.listFigures.addItem(str(self.shapes[-1]))
    def on_clearCanvas_released(self):
        self.view.scene.clear()
        self.shapes = []
        self.listFigures.clear()
        print(self.shapes)
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    mainWindow = MainWindow()
    mainWindow.show()
    sys.exit(app.exec_())

 # -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'window.ui'
#
# Created by: PyQt5 UI code generator 5.9.2
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1100, 760)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.view = QtWidgets.QGraphicsView(self.centralwidget)
        self.view.setGeometry(QtCore.QRect(230, 40, 861, 661))
        self.view.setObjectName("view")
        self.rotate = QtWidgets.QDial(self.centralwidget)
        self.rotate.setGeometry(QtCore.QRect(10, 290, 91, 111))
        self.rotate.setObjectName("rotate")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(10, 260, 101, 41))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.label_3 = QtWidgets.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(130, 260, 101, 41))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_3.setFont(font)
        self.label_3.setObjectName("label_3")
        self.changeDimensions = QtWidgets.QDial(self.centralwidget)
        self.changeDimensions.setGeometry(QtCore.QRect(120, 290, 91, 111))
        self.changeDimensions.setObjectName("changeDimensions")
        self.label_4 = QtWidgets.QLabel(self.centralwidget)
        self.label_4.setGeometry(QtCore.QRect(10, 10, 131, 21))
        font = QtGui.QFont()
        font.setPointSize(12)
        self.label_4.setFont(font)
        self.label_4.setObjectName("label_4")
        self.moveLeftOrRight = QtWidgets.QSlider(self.centralwidget)
        self.moveLeftOrRight.setGeometry(QtCore.QRect(50, 490, 160, 19))
        self.moveLeftOrRight.setMaximum(1000)
        self.moveLeftOrRight.setProperty("value", 500)
        self.moveLeftOrRight.setOrientation(QtCore.Qt.Horizontal)
        self.moveLeftOrRight.setTickPosition(QtWidgets.QSlider.NoTicks)
        self.moveLeftOrRight.setTickInterval(0)
        self.moveLeftOrRight.setObjectName("moveLeftOrRight")
        self.moveUpOrDown = QtWidgets.QSlider(self.centralwidget)
        self.moveUpOrDown.setGeometry(QtCore.QRect(20, 520, 19, 160))
        self.moveUpOrDown.setMaximum(1000)
        self.moveUpOrDown.setSliderPosition(500)
        self.moveUpOrDown.setOrientation(QtCore.Qt.Vertical)
        self.moveUpOrDown.setObjectName("moveUpOrDown")
        self.label_5 = QtWidgets.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(50, 520, 141, 41))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_5.setFont(font)
        self.label_5.setObjectName("label_5")
        self.circle = QtWidgets.QPushButton(self.centralwidget)
        self.circle.setGeometry(QtCore.QRect(230, 10, 75, 23))
        self.circle.setObjectName("circle")
        self.rectangle = QtWidgets.QPushButton(self.centralwidget)
        self.rectangle.setGeometry(QtCore.QRect(310, 10, 91, 23))
        self.rectangle.setObjectName("rectangle")
        self.romb = QtWidgets.QPushButton(self.centralwidget)
        self.romb.setGeometry(QtCore.QRect(410, 10, 75, 23))
        self.romb.setObjectName("romb")
        self.star = QtWidgets.QPushButton(self.centralwidget)
        self.star.setGeometry(QtCore.QRect(490, 10, 75, 23))
        self.star.setObjectName("star")
        self.deleteItem = QtWidgets.QPushButton(self.centralwidget)
        self.deleteItem.setGeometry(QtCore.QRect(110, 240, 111, 23))
        self.deleteItem.setObjectName("deleteItem")
        self.listFigures = QtWidgets.QListWidget(self.centralwidget)
        self.listFigures.setGeometry(QtCore.QRect(10, 40, 211, 192))
        self.listFigures.setObjectName("listFigures")
        self.clearCanvas = QtWidgets.QPushButton(self.centralwidget)
        self.clearCanvas.setGeometry(QtCore.QRect(10, 240, 75, 23))
        self.clearCanvas.setObjectName("clearCanvas")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1100, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.toolBar = QtWidgets.QToolBar(MainWindow)
        self.toolBar.setObjectName("toolBar")
        MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.toolBar)
        self.actionCircle = QtWidgets.QAction(MainWindow)
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap("images/circle.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.actionCircle.setIcon(icon)
        self.actionCircle.setObjectName("actionCircle")
        self.actionRectangle = QtWidgets.QAction(MainWindow)
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap("images/rectangle.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.actionRectangle.setIcon(icon1)
        self.actionRectangle.setObjectName("actionRectangle")
        self.actionRhombus = QtWidgets.QAction(MainWindow)
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap("images/diamond.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.actionRhombus.setIcon(icon2)
        self.actionRhombus.setObjectName("actionRhombus")
        self.actionStar = QtWidgets.QAction(MainWindow)
        icon3 = QtGui.QIcon()
        icon3.addPixmap(QtGui.QPixmap("images/star.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.actionStar.setIcon(icon3)
        self.actionStar.setObjectName("actionStar")
        self.toolBar.addAction(self.actionCircle)
        self.toolBar.addAction(self.actionRectangle)
        self.toolBar.addAction(self.actionRhombus)
        self.toolBar.addAction(self.actionStar)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "Вращение"))
        self.label_3.setText(_translate("MainWindow", "Размер"))
        self.label_4.setText(_translate("MainWindow", "Список фигур"))
        self.label_5.setText(_translate("MainWindow", "Перемещение"))
        self.circle.setText(_translate("MainWindow", "Круг"))
        self.rectangle.setText(_translate("MainWindow", "Прямоугольник"))
        self.romb.setText(_translate("MainWindow", "Ромб"))
        self.star.setText(_translate("MainWindow", "Звезда"))
        self.deleteItem.setText(_translate("MainWindow", "Удалить фигуру"))
        self.clearCanvas.setText(_translate("MainWindow", "Очистить"))
        self.toolBar.setWindowTitle(_translate("MainWindow", "toolBar"))
        self.actionCircle.setText(_translate("MainWindow", "Circle"))
        self.actionCircle.setToolTip(_translate("MainWindow", "Создать круг (C)"))
        self.actionCircle.setShortcut(_translate("MainWindow", "C"))
        self.actionRectangle.setText(_translate("MainWindow", "Rectangle"))
        self.actionRectangle.setToolTip(_translate("MainWindow", "Создать прямоугольник (R)"))
        self.actionRectangle.setShortcut(_translate("MainWindow", "R"))
        self.actionRhombus.setText(_translate("MainWindow", "Rhombus"))
        self.actionRhombus.setToolTip(_translate("MainWindow", "Создать Ромб"))
        self.actionRhombus.setShortcut(_translate("MainWindow", "D"))
        self.actionStar.setText(_translate("MainWindow", "Star"))
        self.actionStar.setToolTip(_translate("MainWindow", "Создать звезду"))
        self.actionStar.setShortcut(_translate("MainWindow", "S"))