Source code for OpenCamera

from OpenCam import Ui_Dialog
import cv2
from PyQt5 import QtWidgets




class OpenCameras(Ui_Dialog):
    """This class is to control the window selecting camera.
    :param MainWindow = Is the parent class window.
    :type MainWindow = QtWidget of mainWindow UI.
    :param recentWindow = is the object of this recent window.
    :type recentWindow = QtDialog inheritance from mainWindow class.
    """
    def __init__(self, MainWindow, recentWindow):
        """Constructor method.
        *this is the way to make the ui can link each other.
        """
        super(OpenCameras, self).__init__()
        self.parent_window = MainWindow
        self.recent_window = recentWindow
        self.setupUi(self.recent_window)
        self.videoStreamURL = None
        self.lineEdit_14.setText('http://192.168.100.226:8000/stream.mjpg')

        self.handle_activated_combobox()
        self.connect_to_button()



    def connect_to_button(self):
        """This is for connect the button or event with class function.
        """
        self.comboBox.activated.connect(self.handle_activated_combobox)
        self.buttonBox.accepted.connect(self.push_button_ok)
        self.buttonBox.rejected.connect(self.exit)
        self.detectPort.clicked.connect(self.check_port_camera)




    def handle_activated_combobox(self):
        """This function is to handle combo box to select _source camera.
        - if select USB Camera then it will hide the object UI for streaming camera
        - On the other hand, if you choose a streaming camera, it will hide the component object UI for the USB camera
        """
        if self.comboBox.currentText() == 'USB Camera':
            self.label_59.hide()
            self.lineEdit_14.hide()
            self.framePortUsb.show()

        else:
            self.label_59.show()
            self.lineEdit_14.show()
            self.framePortUsb.hide()




    def check_port_camera(self):
        """Check the camera usb that available in computer

        return:
            will showing the port camera available
        """
        all_camera_idx_available = []
        for camera_idx in range(5):
            cap = cv2.VideoCapture(camera_idx)
            if cap.isOpened():
                all_camera_idx_available.append(camera_idx)
                cap.release()

        msgbox = QtWidgets.QMessageBox()
        msgbox.setWindowTitle("Camera Port Available")
        msgbox.setText(
            "Select the port camera from the number in list !! \n"
            "Available Port = " + str(all_camera_idx_available))
        msgbox.exec()




    def video_source(self):
        """To select the video _source want to use

        return:
            videoStreamURL
        """
        if self.comboBox.currentText() == 'USB Camera':
            self.videoStreamURL = int(self.portCamera.currentText())
        else:
            self.videoStreamURL = self.lineEdit_14.text()
        return self.videoStreamURL




    def push_button_ok(self):
        """ to process the final decisions the open camera

        return:
            execute open camera function
        """
        self.parent_window.cameraOpen()
        self.exit()




    def exit(self):
        """ Exit open camera window when reject the choice

        return:
            close the window
        """
        self.recent_window.close()