# -*- coding: utf-8 -*- # 原文链接:https://blog.csdn.net/qq_32892383/article/details/90738730 # 思绪无限 # 博客网址:https://wuxian.blog.csdn.net/ # Created by: PyQt5 UI code generator 5.11.3 # 运行程序需安装:pyqt5、OpenCV-python from PyQt5 import QtCore, QtGui, QtWidgets from sys import argv,exit from PyQt5.QtWidgets import QApplication,QMainWindow # import icon_rc import time import cv2 class Ui_MainWindow(object): def __init__(self, MainWindow): self.timer_camera = QtCore.QTimer() # 定时器 self.setupUi(MainWindow) self.retranslateUi(MainWindow) self.cap = cv2.VideoCapture() # 准备获取图像 self.CAM_NUM = 0 self.slot_init() # 设置槽函数 def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.setWindowModality(QtCore.Qt.NonModal) MainWindow.resize(765, 645) MainWindow.setMinimumSize(QtCore.QSize(765, 645)) MainWindow.setMaximumSize(QtCore.QSize(16777215, 16777215)) icon = QtGui.QIcon() icon.addPixmap(QtGui.QPixmap(":/newPrefix/pic/pai.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off) MainWindow.setWindowIcon(icon) MainWindow.setToolTip("") MainWindow.setAutoFillBackground(False) MainWindow.setTabShape(QtWidgets.QTabWidget.Rounded) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.centralwidget) self.horizontalLayout_2.setObjectName("horizontalLayout_2") self.verticalLayout = QtWidgets.QVBoxLayout() self.verticalLayout.setObjectName("verticalLayout") self.label = QtWidgets.QLabel(self.centralwidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.MinimumExpanding, QtWidgets.QSizePolicy.Preferred) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.label.sizePolicy().hasHeightForWidth()) self.label.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setFamily("华文隶书") font.setPointSize(20) self.label.setFont(font) self.label.setAlignment(QtCore.Qt.AlignCenter) self.label.setObjectName("label") self.verticalLayout.addWidget(self.label) self.horizontalLayout = QtWidgets.QHBoxLayout() self.horizontalLayout.setSizeConstraint(QtWidgets.QLayout.SetDefaultConstraint) self.horizontalLayout.setContentsMargins(-1, 50, -1, -1) self.horizontalLayout.setSpacing(0) self.horizontalLayout.setObjectName("horizontalLayout") self.pushButton_open = QtWidgets.QPushButton(self.centralwidget) self.pushButton_open.setMinimumSize(QtCore.QSize(100, 40)) self.pushButton_open.setMaximumSize(QtCore.QSize(120, 40)) font = QtGui.QFont() font.setFamily("华文彩云") font.setPointSize(12) self.pushButton_open.setFont(font) icon1 = QtGui.QIcon() icon1.addPixmap(QtGui.QPixmap(":/newPrefix/pic/g1.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off) self.pushButton_open.setIcon(icon1) self.pushButton_open.setObjectName("pushButton_open") self.horizontalLayout.addWidget(self.pushButton_open) self.pushButton_take = QtWidgets.QPushButton(self.centralwidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_take.sizePolicy().hasHeightForWidth()) self.pushButton_take.setSizePolicy(sizePolicy) self.pushButton_take.setMinimumSize(QtCore.QSize(100, 40)) self.pushButton_take.setMaximumSize(QtCore.QSize(100, 40)) font = QtGui.QFont() font.setFamily("华文彩云") font.setPointSize(12) self.pushButton_take.setFont(font) self.pushButton_take.setIcon(icon) self.pushButton_take.setObjectName("pushButton_take") self.horizontalLayout.addWidget(self.pushButton_take) self.pushButton_close = QtWidgets.QPushButton(self.centralwidget) self.pushButton_close.setMinimumSize(QtCore.QSize(100, 40)) self.pushButton_close.setMaximumSize(QtCore.QSize(130, 40)) font = QtGui.QFont() font.setFamily("华文彩云") font.setPointSize(12) self.pushButton_close.setFont(font) icon2 = QtGui.QIcon() icon2.addPixmap(QtGui.QPixmap(":/newPrefix/pic/down.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off) self.pushButton_close.setIcon(icon2) self.pushButton_close.setObjectName("pushButton_close") self.horizontalLayout.addWidget(self.pushButton_close) self.horizontalLayout.setStretch(0, 1) self.horizontalLayout.setStretch(1, 1) self.horizontalLayout.setStretch(2, 1) self.verticalLayout.addLayout(self.horizontalLayout) self.label_face = QtWidgets.QLabel(self.centralwidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.label_face.sizePolicy().hasHeightForWidth()) self.label_face.setSizePolicy(sizePolicy) self.label_face.setMinimumSize(QtCore.QSize(0, 0)) self.label_face.setMaximumSize(QtCore.QSize(16777215, 16777215)) font = QtGui.QFont() font.setFamily("楷体") font.setPointSize(16) self.label_face.setFont(font) self.label_face.setLayoutDirection(QtCore.Qt.LeftToRight) self.label_face.setStyleSheet("background-color: rgb(192, 218, 255);") self.label_face.setAlignment(QtCore.Qt.AlignCenter) self.label_face.setObjectName("label_face") self.verticalLayout.addWidget(self.label_face) self.verticalLayout.setStretch(2, 5) self.horizontalLayout_2.addLayout(self.verticalLayout) MainWindow.setCentralWidget(self.centralwidget) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "Qt-Camera (思绪无限)")) self.label.setText(_translate("MainWindow", "Qt Camera - WuXian")) self.pushButton_open.setToolTip(_translate("MainWindow", "点击打开摄像头")) self.pushButton_open.setText(_translate("MainWindow", "打开摄像头")) self.pushButton_take.setToolTip(_translate("MainWindow", "点击拍照")) self.pushButton_take.setText(_translate("MainWindow", "拍照")) self.pushButton_close.setToolTip(_translate("MainWindow", "点击关闭摄像头")) self.pushButton_close.setText(_translate("MainWindow", "关闭摄像头")) self.label_face.setText(_translate("MainWindow", "<html><head/><body><p align=\"center\"><img src=\":/newPrefix/pic/Hint.png\"/><span style=\" font-size:28pt;\">点击打开摄像头</span><br/></p></body></html>")) def slot_init(self): # 设置槽函数 self.pushButton_open.clicked.connect(self.button_open_camera_click) self.timer_camera.timeout.connect(self.show_camera) self.pushButton_close.clicked.connect(self.closeEvent) self.pushButton_take.clicked.connect(self.takePhoto) def button_open_camera_click(self): if self.timer_camera.isActive() == False: flag = self.cap.open(self.CAM_NUM) if flag == False: msg = QtWidgets.QMessageBox.warning( self, u"Warning", u"请检测相机与电脑是否连接正确", buttons=QtWidgets.QMessageBox.Ok, defaultButton=QtWidgets.QMessageBox.Ok) else: self.timer_camera.start(30) def show_camera(self): flag, self.image = self.cap.read() self.image=cv2.flip(self.image, 1) # 左右翻转 show = cv2.cvtColor(self.image, cv2.COLOR_BGR2RGB) showImage = QtGui.QImage(show.data, show.shape[1], show.shape[0], QtGui.QImage.Format_RGB888) self.label_face.setPixmap(QtGui.QPixmap.fromImage(showImage)) self.label_face.setScaledContents(True) def takePhoto(self): if self.timer_camera.isActive() != False: now_time = time.strftime('%Y-%m-%d-%H-%M-%S',time.localtime(time.time())) print(now_time) cv2.imwrite('pic_'+str(now_time)+'.png',self.image) cv2.putText(self.image, 'The picture have saved !', (int(self.image.shape[1]/2-130), int(self.image.shape[0]/2)), cv2.FONT_HERSHEY_SCRIPT_COMPLEX, 1.0, (255, 0, 0), 1) self.timer_camera.stop() show = cv2.cvtColor(self.image, cv2.COLOR_BGR2RGB) # 左右翻转 showImage = QtGui.QImage(show.data, show.shape[1], show.shape[0], QtGui.QImage.Format_RGB888) self.label_face.setPixmap(QtGui.QPixmap.fromImage(showImage)) self.label_face.setScaledContents(True) def closeEvent(self): if self.timer_camera.isActive() != False: ok = QtWidgets.QPushButton() cacel = QtWidgets.QPushButton() msg = QtWidgets.QMessageBox(QtWidgets.QMessageBox.Warning, u"关闭", u"是否关闭!") msg.addButton(ok,QtWidgets.QMessageBox.ActionRole) msg.addButton(cacel, QtWidgets.QMessageBox.RejectRole) ok.setText(u'确定') cacel.setText(u'取消') if msg.exec_() != QtWidgets.QMessageBox.RejectRole: if self.cap.isOpened(): self.cap.release() if self.timer_camera.isActive(): self.timer_camera.stop() self.label_face.setText("<html><head/><body><p align=\"center\"><img src=\":/newPrefix/pic/Hint.png\"/><span style=\" font-size:28pt;\">点击打开摄像头</span><br/></p></body></html>") if __name__ == '__main__': app = QApplication(argv) window = QMainWindow() ui = Ui_MainWindow(window) window.show() exit(app.exec_())
Ubuntu16.04安装pyqt5错误报告及解决方案(超级简单有效),ubuntu1604,PyQt5,报错
发表时间:2020-07-04
采用下面的pip安装,会导致报错
pip install PyQt5
测试用例:
import sys
from PyQt5 import QtWidgets
app = QtWidgets.QApplication(sys.argv)
button = QtWidgets.QPushButton(“Hello, World!”)
button.setFixedSize(100, 50)
button.show()
qt.qpa.plugin: Could not load the Qt platform plugin “xcb” in “” even though it was found.
。。。下面还要一堆问题
解决方法:
如果你采用了上面的安装方式
首先需要把安装的pyqt相关的包全部删除
比如
pip uninstall PyQt5
pip uninstall PyQt5-tools
然后使用conda进行安装即可
conda install pyqt
亲测有效!!!
有用记得点赞哦!
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