Python PyQt ile Login Penceresi

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QLabel, QLineEdit, QPushButton, QComboBox, QMessageBox
from PyQt5.QtGui import QFont
from PyQt5.QtCore import Qt

class HackerLoginPanel(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Luxer Giriş Paneli")
        self.setStyleSheet("background-color: black; color: #00ff00; font-family: 'Courier New';")

        self.layout = QVBoxLayout()
        self.setLayout(self.layout)

        ascii_art_label = QLabel()
        ascii_art = """
█████╗ ██╗   ██╗████████╗██╗      ██████╗  ██████╗  ██████╗
██╔══██╗╚██╗ ██╔╝╚══██╔══╝██║     ██╔═══██╗██╔════╝ ██╔═══██╗
███████║ ╚████╔╝    ██║   ██║     ██║   ██║██║  ███╗██║   ██║
██╔══██║  ╚██╔╝     ██║   ██║     ██║   ██║██║   ██║██║   ██║
██║  ██║   ██║      ██║   ███████╗╚██████╔╝╚██████╔╝╚██████╔╝
╚═╝  ╚═╝   ╚═╝      ╚═╝   ╚══════╝ ╚═════╝  ╚═════╝  ╚═════╝
                                                                    
   ██╗     ██╗   ██╗██╗  ██╗███████╗██████╗             
    ██║     ██║   ██║╚██╗██╔╝██╔════╝██╔══██╗           
    ██║     ██║   ██║ ╚███╔╝ █████╗  ██████╔╝           
    ██║     ██║   ██║ ██╔██╗ ██╔══╝  ██╔══██╗           
    ███████╗╚██████╔╝██╔╝ ██╗███████╗██║  ██║           
    ╚══════╝ ╚═════╝ ╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝           
                                                                    
                """
        ascii_art_label.setText(ascii_art)
        ascii_art_label.setFont(QFont('Courier New', 12))
        ascii_art_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        self.layout.addWidget(ascii_art_label)

        input_layout = QVBoxLayout()
        self.layout.addLayout(input_layout)

        self.username_label = QLabel("Kullanıcı Adı")
        self.username_label.setFont(QFont('Monospace', 12))
        input_layout.addWidget(self.username_label, alignment=Qt.AlignmentFlag.AlignCenter)

        self.username_input = QLineEdit()
        input_layout.addWidget(self.username_input)

        self.password_label = QLabel("Şifre")
        self.password_label.setFont(QFont('Monospace', 12))
        input_layout.addWidget(self.password_label, alignment=Qt.AlignmentFlag.AlignCenter)

        self.password_input = QLineEdit()
        self.password_input.setEchoMode(QLineEdit.EchoMode.Password)
        input_layout.addWidget(self.password_input)

        self.theme_combobox = QComboBox()
        self.theme_combobox.addItems(["Yeşil", "Kırmızı", "Mavi", "Mor", "Turkuaz"])
        self.theme_combobox.currentIndexChanged.connect(self.change_theme)
        self.layout.addWidget(self.theme_combobox, alignment=Qt.AlignmentFlag.AlignCenter)

        self.login_button = QPushButton("Giriş Yap")
        self.login_button.setStyleSheet("""
            QPushButton {
                background-color: #008000; /* Yeşil */
                border: 2px solid #00ff00;
                border-radius: 5px;
                color: white;
                font-weight: bold;
            }
            QPushButton:hover {
                background-color: #00a000; /* Daha koyu yeşil */
            }
        """)
        self.login_button.clicked.connect(self.check_credentials)
        self.layout.addWidget(self.login_button, alignment=Qt.AlignmentFlag.AlignCenter)

    def change_theme(self, index):
        if index == 0:
            self.setStyleSheet("background-color: black; color: #00ff00; font-family: 'Courier New';")
            self.login_button.setStyleSheet("""
                QPushButton {
                    background-color: #008000; /* Yeşil */
                    border: 2px solid #00ff00;
                    border-radius: 5px;
                    color: white;
                    font-weight: bold;
                }
                QPushButton:hover {
                    background-color: #00a000; /* Daha koyu yeşil */
                }
            """)
        elif index == 1:
            self.setStyleSheet("background-color: black; color: red; font-family: 'Courier New';")
            self.login_button.setStyleSheet("""
                QPushButton {
                    background-color: #800000; /* Kırmızı */
                    border: 2px solid #ff0000;
                    border-radius: 5px;
                    color: white;
                    font-weight: bold;
                }
                QPushButton:hover {
                    background-color: #a00000; /* Daha koyu kırmızı */
                }
            """)
        elif index == 2:
            self.setStyleSheet("background-color: black; color: blue; font-family: 'Courier New';")
            self.login_button.setStyleSheet("""
                QPushButton {
                    background-color: #000080; /* Mavi */
                    border: 2px solid #0000ff;
                    border-radius: 5px;
                    color: white;
                    font-weight: bold;
                }
                QPushButton:hover {
                    background-color: #0000a0; /* Daha koyu mavi */
                }
            """)
        elif index == 3:
            self.setStyleSheet("background-color: black; color: purple; font-family: 'Courier New';")
            self.login_button.setStyleSheet("""
                QPushButton {
                    background-color: #800080; /* Mor */
                    border: 2px solid #ff00ff;
                    border-radius: 5px;
                    color: white;
                    font-weight: bold;
                }
                QPushButton:hover {
                    background-color: #9400d3; /* Daha koyu mor */
                }
            """)
        elif index == 4:
            self.setStyleSheet("background-color: black; color: #008b8b; font-family: 'Courier New';")
            self.login_button.setStyleSheet("""
                QPushButton {
                    background-color: #008b8b; /* Turkuaz */
                    border: 2px solid #00ced1;
                    border-radius: 5px;
                    color: white;
                    font-weight: bold;
                }
                QPushButton:hover {
                    background-color: #00bfbf; /* Daha koyu turkuaz */
                }
            """)

    def check_credentials(self):
        username = self.username_input.text()
        password = self.password_input.text()

        if username == "admin" and password == "admin123":
            QMessageBox.information(self, "Başarılı", "Giriş başarılı!")
        else:
            QMessageBox.critical(self, "Hata", "Kullanıcı adı veya şifre hatalı!")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = HackerLoginPanel()
    window.show()
    sys.exit(app.exec_())