Open Source Python login loading mainwindow açık kaynak

# created by Fridibuck

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QLabel, QProgressBar, QLineEdit, QPushButton, QMessageBox
from PyQt5.QtCore import Qt, QTimer, QRectF, QPoint
from PyQt5.QtGui import QFont, QIcon, QPainterPath, QPainter, QBrush, QColor, QPixmap

class LoginWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
        self.oldPos = self.pos()

    def initUI(self):
        self.setWindowFlags(Qt.FramelessWindowHint)
        self.setAttribute(Qt.WA_TranslucentBackground)
        self.setStyleSheet("background-color: rgba(0, 0, 0, 0);")

        layout = QVBoxLayout()
        layout.setContentsMargins(40, 40, 40, 40)
        layout.setSpacing(20)

        self.label = QLabel("Fridibuck Login Page", self)
        self.label.setStyleSheet("color: #ecf0f1; font-size: 24px; font-weight: bold;")
        self.label.setAlignment(Qt.AlignCenter)

        self.username = QLineEdit(self)
        self.username.setPlaceholderText("Username")
        self.username.setFont(QFont("Arial", 16))
        self.username.setStyleSheet("""
            QLineEdit {
                border: 1px solid #bbb;
                border-radius: 5px;
                padding: 10px;
                font-size: 16px;
                background-color: white;
            }
            QLineEdit:focus {
                border: 2px solid #3498db;
                background-color: #e0e0e0;
            }
        """)
        self.username.returnPressed.connect(self.handleLogin)

        self.password = QLineEdit(self)
        self.password.setPlaceholderText("Password")
        self.password.setEchoMode(QLineEdit.Password)
        self.password.setFont(QFont("Arial", 16))
        self.password.setStyleSheet("""
            QLineEdit {
                border: 1px solid #bbb;
                border-radius: 5px;
                padding: 10px;
                font-size: 16px;
                background-color: white;
            }
            QLineEdit:focus {
                border: 2px solid #3498db;
                background-color: #e0e0e0;
            }
        """)
        self.password.returnPressed.connect(self.handleLogin)

        self.loginButton = QPushButton("Login", self)
        self.loginButton.setFont(QFont("Arial", 16))
        self.loginButton.setStyleSheet("""
            QPushButton {
                background-color: #3498db;
                color: white;
                border: none;
                border-radius: 5px;
                padding: 10px;
                font-size: 16px;
            }
            QPushButton:hover {
                background-color: #2980b9;
            }
            QPushButton:pressed {
                background-color: #2471a3;
            }
        """)
        self.loginButton.clicked.connect(self.handleLogin)

        layout.addWidget(self.label)
        layout.addWidget(self.username)
        layout.addWidget(self.password)
        layout.addWidget(self.loginButton)

        self.setLayout(layout)

        self.logo = QLabel(self)
        self.logo.setPixmap(QPixmap("exit.png").scaled(40, 40, Qt.KeepAspectRatio, Qt.SmoothTransformation))
        self.logo.setGeometry(self.width() - 40, 0, 40, 40)
        self.logo.mousePressEvent = self.closeApplication

       
        screen = QApplication.primaryScreen().geometry()
        size = self.sizeHint()
        self.setGeometry(
            (screen.width() - size.width()) // 2,
            (screen.height() - size.height()) // 2,
            size.width(), size.height()
        )

    def resizeEvent(self, event):
        super().resizeEvent(event)
        self.logo.setGeometry(self.width() - 40, 0, 40, 40)

    def paintEvent(self, event):
        path = QPainterPath()
        path.setFillRule(Qt.WindingFill)
        path.addRoundedRect(QRectF(self.rect()), 20, 20)

        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing, True)
        painter.fillPath(path, QBrush(QColor(44, 62, 80, 255)))

    def mousePressEvent(self, event):
        if event.button() == Qt.LeftButton:
            self.oldPos = event.globalPos()

    def mouseMoveEvent(self, event):
        if event.buttons() == Qt.LeftButton:
            delta = QPoint(event.globalPos() - self.oldPos)
            self.move(self.x() + delta.x(), self.y() + delta.y())
            self.oldPos = event.globalPos()

    def handleLogin(self):
        if self.username.text() == 'admin' and self.password.text() == 'admin':
            self.close()
            self.loaderScreen = LoaderScreen()
            self.loaderScreen.show()
        else:
            error_msg = QMessageBox(self)
            error_msg.setWindowTitle('Error')
            error_msg.setText('Invalid username or password')
            error_msg.setStyleSheet("""
                QMessageBox {
                    background-color: white;
                    color: black;
                }
                QMessageBox QLabel {
                    color: black;
                }
                QMessageBox QPushButton {
                    background-color: #3498db;
                    color: white;
                    border-radius: 5px;
                    padding: 5px 10px;
                }
                QMessageBox QPushButton:hover {
                    background-color: #2980b9;
                }
            """)
            error_msg.exec_()

    def closeApplication(self, event):
        self.close()

class LoaderScreen(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint)
        self.setAttribute(Qt.WA_TranslucentBackground)
       
        layout = QVBoxLayout()
        layout.setContentsMargins(50, 50, 50, 50)
        layout.setSpacing(10)

        self.label = QLabel("Loading...", self)
        self.label.setStyleSheet("color: white; font-size: 30px;")
        self.label.setAlignment(Qt.AlignCenter)

        self.progress = QProgressBar(self)
        self.progress.setRange(0, 100)
        self.progress.setValue(0)
        self.progress.setTextVisible(False)
        self.progress.setStyleSheet("""
            QProgressBar {
                border: 2px solid grey;
                border-radius: 10px;
                background-color: #E0E0E0;
            }
            QProgressBar::chunk {
                background-color: #3498db;
                width: 20px;
                margin: 1px;
            }
        """)

        layout.addWidget(self.label)
        layout.addWidget(self.progress)

        self.setLayout(layout)

       
        screen = QApplication.primaryScreen().geometry()
        size = self.sizeHint()
        self.setGeometry(
            (screen.width() - size.width()) // 2,
            (screen.height() - size.height()) // 2,
            size.width(), size.height()
        )

        self.timer = QTimer(self)
        self.timer.timeout.connect(self.updateProgress)
        self.timer.start(50)

        self.show()

    def updateProgress(self):
        value = self.progress.value()
        if value < 100:
            self.progress.setValue(value + 1)
        else:
            self.timer.stop()
            self.close()
            self.mainWindow = MainWindow()
            self.mainWindow.show()

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('Main Application')
        self.setGeometry(100, 100, 800, 600)
        self.setWindowIcon(QIcon('main_icon.png'))

        layout = QVBoxLayout()
        label = QLabel("Fridibuck", self)
        label.setAlignment(Qt.AlignCenter)
        label.setFont(QFont("Arial", 24))
        label.setStyleSheet("color: #2c3e50;")
        layout.addWidget(label)

        self.setLayout(layout)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    loginWindow = LoginWindow()
    loginWindow.show()
    sys.exit(app.exec_())