PyQT5:如何在现有的QGraphicsVIew中绘制？
Bry*_*loa 3 python pyqt qt-designer qgraphicsview pyqt5
就像标题说我试图在现有的QGraphicsView中绘制.我使用QT Designer生成的窗口,我想在QGraphicsView中绘制一个16x16方块的矩阵.
这是我现在的代码:
窗口:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.8.2
#
# 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(911, 567)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(20, 10, 301, 31))
font = QtGui.QFont()
font.setPointSize(12)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName("label")
self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
self.groupBox.setGeometry(QtCore.QRect(620, 40, 271, 91))
font = QtGui.QFont()
font.setBold(True)
font.setWeight(75)
self.groupBox.setFont(font)
self.groupBox.setObjectName("groupBox")
self.rdtest = QtWidgets.QRadioButton(self.groupBox)
self.rdtest.setGeometry(QtCore.QRect(60, 60, 101, 22))
self.rdtest.setObjectName("rdtest")
self.rdtrain = QtWidgets.QRadioButton(self.groupBox)
self.rdtrain.setGeometry(QtCore.QRect(60, 30, 101, 22))
self.rdtrain.setObjectName("rdtrain")
self.graphicsView = QtWidgets.QGraphicsView(self.centralwidget)
self.graphicsView.setGeometry(QtCore.QRect(10, 40, 601, 411))
self.graphicsView.setObjectName("graphicsView")
self.clear = QtWidgets.QPushButton(self.centralwidget)
self.clear.setGeometry(QtCore.QRect(10, 470, 88, 29))
self.clear.setObjectName("clear")
self.trainNewInput = QtWidgets.QPushButton(self.centralwidget)
self.trainNewInput.setGeometry(QtCore.QRect(500, 470, 111, 29))
self.trainNewInput.setObjectName("trainNewInput")
self.trainbox = QtWidgets.QGroupBox(self.centralwidget)
self.trainbox.setGeometry(QtCore.QRect(620, 150, 271, 171))
font = QtGui.QFont()
font.setBold(True)
font.setWeight(75)
self.trainbox.setFont(font)
self.trainbox.setObjectName("trainbox")
self.vtrain = QtWidgets.QLineEdit(self.trainbox)
self.vtrain.setGeometry(QtCore.QRect(100, 70, 101, 29))
self.vtrain.setObjectName("vtrain")
self.label_2 = QtWidgets.QLabel(self.trainbox)
self.label_2.setGeometry(QtCore.QRect(40, 70, 56, 31))
font = QtGui.QFont()
font.setBold(True)
font.setWeight(75)
self.label_2.setFont(font)
self.label_2.setObjectName("label_2")
self.trainDefault = QtWidgets.QPushButton(self.trainbox)
self.trainDefault.setGeometry(QtCore.QRect(40, 30, 161, 29))
self.trainDefault.setObjectName("trainDefault")
self.output = QtWidgets.QLabel(self.trainbox)
self.output.setGeometry(QtCore.QRect(10, 130, 271, 17))
self.output.setText("")
self.output.setObjectName("output")
self.output_2 = QtWidgets.QLabel(self.trainbox)
self.output_2.setGeometry(QtCore.QRect(10, 150, 271, 17))
self.output_2.setText("")
self.output_2.setObjectName("output_2")
self.testbox = QtWidgets.QGroupBox(self.centralwidget)
self.testbox.setGeometry(QtCore.QRect(620, 330, 271, 171))
font = QtGui.QFont()
font.setBold(True)
font.setWeight(75)
self.testbox.setFont(font)
self.testbox.setObjectName("testbox")
self.pushButton = QtWidgets.QPushButton(self.testbox)
self.pushButton.setGeometry(QtCore.QRect(50, 40, 161, 29))
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 911, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
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", "RNA: Numeros "))
self.groupBox.setTitle(_translate("MainWindow", "Opciones:"))
self.rdtest.setText(_translate("MainWindow", "Test"))
self.rdtrain.setText(_translate("MainWindow", "Train"))
self.clear.setText(_translate("MainWindow", "Clear"))
self.trainNewInput.setText(_translate("MainWindow", "Train new Input"))
self.trainbox.setTitle(_translate("MainWindow", "Train:"))
self.label_2.setText(_translate("MainWindow", "% Test:"))
self.trainDefault.setText(_translate("MainWindow", "Train Default Data"))
self.testbox.setTitle(_translate("MainWindow", "Test:"))
self.pushButton.setText(_translate("MainWindow", "Start Test"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
我想在逻辑类中创建一个从窗口中绘制QGraphicsView的方法:
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QGraphicsScene
from PyQt5.QtCore import (QLineF, QPointF, QRectF, Qt)
from PyQt5.QtWidgets import QWidget, QApplication
from PyQt5.QtWidgets import (QApplication, QGraphicsView, QGraphicsScene, QGraphicsItem,
QGridLayout, QVBoxLayout, QHBoxLayout,
QLabel, QLineEdit, QPushButton)
from window import Ui_MainWindow
from RNA import NumberIA
train = []
train_r = []
test = []
test_r = []
class MyFirstGuiProgram(Ui_MainWindow):
def __init__(self, dialog):
Ui_MainWindow.__init__(self)
self.setupUi(dialog)
self.rdtrain.setChecked(True)
# Connect "add" button with a custom function (addInputTextToListbox)
self.clear.clicked.connect(self.addInputTextToListbox)
self.trainDefault.clicked.connect(self.t_DefaultData)
self.rdtest.clicked.connect(self.enableTest)
self.rdtrain.clicked.connect(self.enableTrain)
def enableTest(self):
self.trainbox.setEnabled(False)
self.trainNewInput.setEnabled(False)
self.testbox.setEnabled(True)
def drawSomething(self):
tes = "f"
def enableTrain(self):
self.trainbox.setEnabled(True)
self.trainNewInput.setEnabled(True)
self.testbox.setEnabled(False)
def addInputTextToListbox(self):
print("Hello world!!!")
def t_DefaultData(self):
ann = NumberIA()
t = self.vtrain.text()
print("Training data: ", t)
global train
global train_r
global test
global test_r
train, train_r, test, test_r = ann.read_file(float(t))
self.output.setText("Train complete...")
ann.crear_red(train, train_r)
accuracy, matrix = ann.probar_red(test, test_r)
self.output_2.setText("Accuracy: " + str(accuracy * 100) + "%")
print("Matris de Confusion:")
print('\n'.join([''.join(['{:4}'.format(item) for item in row])
for row in matrix]))
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = MyFirstGuiProgram(MainWindow)
MainWindow.show()
MainWindow.setWindowTitle("RNA: Inteligencia Artificial 2")
ui.enableTrain()
sys.exit(app.exec_())
我似乎无法找到如何在线进行的示例,我发现的例子对我来说很模糊,似乎无法弄明白.
我建议你继承QMainWindow并实现Ui_MainWindow接口,绘制QGraphicsView你必须使用a QGraphicsScene,并使用它的方法,在这种情况下使用addRect().
from PyQt5 import QtCore, QtGui, QtWidgets
class MyFirstGuiProgram(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
QtWidgets.QMainWindow.__init__(self, parent=parent)
self.setupUi(self)
scene = QtWidgets.QGraphicsScene()
self.graphicsView.setScene(scene)
pen = QtGui.QPen(QtCore.Qt.green)
side = 20
for i in range(16):
for j in range(16):
r = QtCore.QRectF(QtCore.QPointF(i*side, j*side), QtCore.QSizeF(side, side))
scene.addRect(r, pen)
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
w = MyFirstGuiProgram()
w.show()
sys.exit(app.exec_())
