pyqt5：Qpainter绘制基础图形，鼠标拖动

import os import time import sys FileName = os.path.basename(sys.argv[0]) FilePath = sys.argv[0].replace(FileName,"") UiName = FileName.replace(".py",".ui") UiPath = FilePath +UiName Ui_pyName = FilePath+"ui.py" FileFlag = os.path.isfile(Ui_pyName) if FileFlag == 0: sys_cmd = os.popen("pyuic5 "+UiPath+" -o "+Ui_pyName) time.sleep(1) from ui import Ui_Form from PyQt5.QtGui import * from PyQt5.QtWidgets import * from PyQt5.QtCore import * class m_window(QWidget,Ui_Form,QPainter): def __init__(self): super(m_window,self).__init__() self.setupUi(self) self.pushButton.clicked.connect(self.DrawPoint) self.pushButton_2.clicked.connect(self.DrawLine) self.pushButton_3.clicked.connect(self.DrawElipse) self.pushButton_4.clicked.connect(self.DrawRectangle) self.pushButton_5.clicked.connect(self.DrawText) self.pushButton_6.clicked.connect(self.DrawPolygon) self.pushButton_7.clicked.connect(self.DrawPie) self.pushButton_8.clicked.connect(self.DrawArc) self.pushButton_9.clicked.connect(self.DrawPath) self.Draw = "" self.Line_list = [0,0,0,0] self.Point_list = [] self.Elipse_list = [0,0,0,0] self.Rectangle_list = [0,0,0,0] self.Polygon_list = [] self.Pie_list = [0,0,0,0] self.Arc_list = [0,0,0,0] def DrawLine(self): self.update() self.Draw = "Line" def DrawPoint(self): self.update() self.Draw = "Point" def DrawElipse(self): self.update() self.Draw = "Elipse" def DrawRectangle(self): self.update() self.Draw = "Rectangle" def DrawText(self): self.update() self.Draw = "Text" def DrawPolygon(self): self.update() self.Draw = "Polygon" def DrawArc(self): self.update() self.Draw = "Arc" def DrawPie(self): self.update() self.Draw = "Pie" def DrawPath(self): self.update() self.Draw = "Path" def paintEvent(self, QPaintEvent): painter = QPainter(self) painter.setPen(QColor(166,66,250)) painter.begin(self) if self.Draw == "Line": painter.drawLine(self.Line_list[0],self.Line_list[1],self.Line_list[2],self.Line_list[3]) print("DrawLine") elif self.Draw == "Point": len_point_list = len(self.Point_list)/2 for i in range(int(len_point_list)): painter.drawPoint(self.Point_list[i*2],self.Point_list[i*2+1]) print("DrawPoint") elif self.Draw == "Elipse": painter.drawEllipse(self.Elipse_list[0],self.Elipse_list[1],self.Elipse_list[2],self.Elipse_list[3]) print("DrawElipse") elif self.Draw == "Rectangle": painter.drawRect(self.Rectangle_list[0],self.Rectangle_list[1],self.Rectangle_list[2],self.Rectangle_list[3]) print("DrawRectangle") elif self.Draw == "Text": painter.drawText(120,120,"文字") print("DrawText") elif self.Draw == "Polygon": polygon = QPolygon() if len(self.Polygon_list) >= 6: polygon.setPoints(self.Polygon_list) print(len(self.Polygon_list)) painter.drawPolygon(polygon) print("DrawPolygon") elif self.Draw == "Pie": painter.drawPie(self.Pie_list[0],self.Pie_list[1],self.Pie_list[2],self.Pie_list[3],0*16,120*16) print("DrawPie") elif self.Draw =="Arc": painter.drawArc(self.Arc_list[0],self.Arc_list[1],self.Arc_list[2],self.Arc_list[3],30*16,120*16) print("DrawArc") elif self.Draw == "Path": path = QPainterPath() path.addRect(100,100,100,100) path.addEllipse(150,150,60,80) painter.setBrush(Qt.blue) #path.setFillRule(Qt.WindingFill) path.setFillRule(Qt.OddEvenFill) painter.drawPath(path) print("DrawPath") painter.end() def mousePressEvent(self, e): if self.Draw == "Line" : self.Line_list[0] = e.x() self.Line_list[1] = e.y() print("start",self.Line_list[0],self.Line_list[1]) elif self.Draw =="Point": self.Point_list.append(e.x()) self.Point_list.append(e.y()) self.update() elif self.Draw == "Elipse": self.Elipse_list[0]=e.x() self.Elipse_list[1]=e.y() elif self.Draw == "Rectangle": self.Rectangle_list[0] = e.x() self.Rectangle_list[1] = e.y() elif self.Draw == "Polygon": self.Polygon_list.append(e.x()) self.Polygon_list.append(e.y()) print(self.Polygon_list) self.update() elif self.Draw == "Pie": self.Pie_list[0] = e.x() self.Pie_list[1] = e.y() elif self.Draw == "Arc": self.Arc_list[0] = e.x() self.Arc_list[1] = e.y() if e.button() == Qt.RightButton: self.Point_list.clear() self.Elipse_list = [0,0,0,0] self.Rectangle_list = [0,0,0,0] self.Polygon_list.clear() self.Pie_list = [0,0,0,0] self.Arc_list = [0,0,0,0] self.update() def mouseReleaseEvent(self, e): if e.button() == Qt.LeftButton: print("左键") elif e.button() == Qt.RightButton: print("右键") elif e.button() == Qt.MidButton: print("点击滚轮") def mouseMoveEvent(self, e): if self.Draw == "Line" : self.Line_list[2] = e.x() self.Line_list[3] = e.y() print("end",self.Line_list[2],self.Line_list[3]) self.update() elif self.Draw == "Elipse": self.Elipse_list[2] = e.x()-self.Elipse_list[0] self.Elipse_list[3] = e.y()-self.Elipse_list[1] self.update() print("Radius",self.Elipse_list[2],self.Elipse_list[3]) elif self.Draw == "Rectangle": self.Rectangle_list[2] = e.x()-self.Rectangle_list[0] self.Rectangle_list[3] = e.y()-self.Rectangle_list[1] self.update() elif self.Draw == "Pie": self.Pie_list[2] = e.x() - self.Pie_list[0] self.Pie_list[3] = e.y() - self.Pie_list[1] self.update() elif self.Draw == "Arc": self.Arc_list[2] = e.x() - self.Arc_list[0] self.Arc_list[3] = e.y() - self.Arc_list[1] self.update() app = QApplication(sys.argv) window = m_window(); window.show() sys.exit(app.exec_())