309 lines
9.9 KiB
Python
309 lines
9.9 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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登录对话框
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用户登录验证界面
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"""
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from PyQt5.QtWidgets import (
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QDialog, QVBoxLayout, QHBoxLayout, QLabel,
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QPushButton, QComboBox, QLineEdit, QMessageBox, QWidget, QPushButton as QBtn
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)
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from PyQt5.QtCore import Qt, QSize
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from PyQt5.QtGui import QFont, QIcon, QPixmap, QPainter, QPen, QBrush, QColor, QPolygon, QPolygonF
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from PyQt5.QtCore import QPoint, QPointF
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import requests
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import json
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# 尝试导入配置
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try:
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from config import USE_HTTP_API, HTTP_API_BASE_URL
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except ImportError:
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USE_HTTP_API = True
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HTTP_API_BASE_URL = "http://127.0.0.1:5050"
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class LoginDialog(QDialog):
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"""登录对话框"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self.user_info = None # 存储登录成功后的用户信息
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self.setWindowTitle("登录")
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self.setModal(True)
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self.setFixedSize(500, 300)
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# HTTP API 配置
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self.use_http_api = USE_HTTP_API
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self.api_base_url = HTTP_API_BASE_URL
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self._build_ui()
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def _create_arrow_icon(self):
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"""创建下拉箭头图标"""
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pixmap = QPixmap(20, 20)
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pixmap.fill(Qt.transparent)
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painter = QPainter(pixmap)
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painter.setRenderHint(QPainter.Antialiasing)
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# 绘制三角形箭头
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painter.setPen(Qt.NoPen)
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painter.setBrush(QBrush(QColor(102, 102, 102))) # #666
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triangle = QPolygonF([
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QPointF(3.75, 5.5),
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QPointF(16.25, 5.5),
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QPointF(10, 14.5)
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])
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painter.drawPolygon(triangle)
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painter.end()
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return pixmap
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def _build_ui(self):
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"""构建界面"""
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layout = QVBoxLayout(self)
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layout.setContentsMargins(60, 40, 60, 40)
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layout.setSpacing(20)
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# 创建下拉箭头图标
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arrow_pixmap = self._create_arrow_icon()
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# 标题
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title_label = QLabel("跌落试验管理系统")
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title_label.setAlignment(Qt.AlignCenter)
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title_font = QFont()
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title_font.setPointSize(16)
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title_font.setBold(True)
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title_label.setFont(title_font)
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title_label.setStyleSheet("color: #333; margin-bottom: 20px;")
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layout.addWidget(title_label)
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# 用户名行
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username_layout = QHBoxLayout()
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username_label = QLabel("用户名")
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username_label.setFixedWidth(80)
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username_label.setStyleSheet("font-size: 14px; color: #666;")
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username_layout.addWidget(username_label)
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# 用户名下拉框（可编辑）
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self.username_combo = QComboBox()
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self.username_combo.setEditable(True)
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self.username_combo.addItems(['test', 'admin', 'topAdmin123'])
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self.username_combo.setCurrentText('test') # 默认test
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# 保存箭头图标以便在样式表中引用
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arrow_path = "e:/WORK/DTM-PY-ALL/UI/temp_arrow.png"
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arrow_pixmap.save(arrow_path, "PNG")
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# 设置样式，使用图片作为箭头
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self.username_combo.setStyleSheet(f"""
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QComboBox {{
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padding: 8px;
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padding-right: 30px;
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border: 1px solid #ddd;
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border-radius: 4px;
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font-size: 18px;
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background: white;
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min-height: 24px;
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}}
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QComboBox:hover {{
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border: 1px solid #3A84FF;
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}}
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QComboBox:editable {{
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background: white;
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}}
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QComboBox::drop-down {{
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subcontrol-origin: padding;
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subcontrol-position: center right;
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width: 30px;
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border-left: 1px solid #ddd;
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background: #fafafa;
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}}
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QComboBox::drop-down:hover {{
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background: #f0f0f0;
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}}
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QComboBox::down-arrow {{
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image: url({arrow_path.replace(chr(92), '/')});
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width: 16px;
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height: 16px;
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}}
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""")
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self.username_combo.lineEdit().setPlaceholderText("请输入用户名")
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username_layout.addWidget(self.username_combo)
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layout.addLayout(username_layout)
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# 密码行
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password_layout = QHBoxLayout()
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password_label = QLabel("密码")
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password_label.setFixedWidth(80)
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password_label.setStyleSheet("font-size: 14px; color: #666;")
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password_layout.addWidget(password_label)
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self.password_input = QLineEdit()
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self.password_input.setEchoMode(QLineEdit.Password)
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self.password_input.setPlaceholderText("*")
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self.password_input.setStyleSheet("""
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QLineEdit {
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padding: 8px;
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border: 1px solid #ddd;
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border-radius: 4px;
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font-size: 14px;
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background: white;
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}
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QLineEdit:hover {
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border: 1px solid #3A84FF;
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}
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QLineEdit:focus {
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border: 1px solid #3A84FF;
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}
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""")
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# 按回车键提交
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self.password_input.returnPressed.connect(self._on_login)
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password_layout.addWidget(self.password_input)
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layout.addLayout(password_layout)
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layout.addStretch()
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# 按钮行
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btn_layout = QHBoxLayout()
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btn_layout.addStretch()
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# 登录按钮
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self.login_btn = QPushButton("登录")
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self.login_btn.setFixedSize(100, 40)
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self.login_btn.setStyleSheet("""
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QPushButton {
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background-color: #3A84FF;
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color: white;
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border: none;
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border-radius: 4px;
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font-size: 14px;
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font-weight: bold;
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}
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QPushButton:hover {
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background-color: #2B6FE6;
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}
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QPushButton:pressed {
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background-color: #1F5BD1;
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}
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""")
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self.login_btn.clicked.connect(self._on_login)
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btn_layout.addWidget(self.login_btn)
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# 取消按钮
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self.cancel_btn = QPushButton("取消")
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self.cancel_btn.setFixedSize(100, 40)
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self.cancel_btn.setStyleSheet("""
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QPushButton {
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background-color: #f5f5f5;
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color: #666;
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border: 1px solid #ddd;
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border-radius: 4px;
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font-size: 14px;
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}
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QPushButton:hover {
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background-color: #e8e8e8;
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}
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QPushButton:pressed {
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background-color: #d8d8d8;
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}
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""")
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self.cancel_btn.clicked.connect(self.reject)
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btn_layout.addWidget(self.cancel_btn)
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layout.addLayout(btn_layout)
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def _on_login(self):
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"""登录按钮点击事件"""
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username = self.username_combo.currentText().strip()
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password = self.password_input.text().strip()
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if not username:
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QMessageBox.warning(self, "提示", "请输入用户名")
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return
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if not password:
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QMessageBox.warning(self, "提示", "请输入密码")
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return
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# 调用后端 API 验证登录
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try:
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result = self._call_login_api(username, password)
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if result.get("status") == "success":
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self.user_info = {
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'username': result.get('username'),
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'userid': result.get('userid'),
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'role': result.get('role'),
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'auth': result.get('auth')
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}
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print(f"[登录成功] 用户: {self.user_info['username']}, 角色: {self.user_info['role']}")
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self.accept() # 关闭对话框并返回成功
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else:
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error_msg = result.get("error", "登录失败")
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QMessageBox.warning(self, "登录失败", f"用户名或密码错误\n{error_msg}")
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# 不关闭对话框，允许重新输入
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except Exception as e:
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import traceback
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traceback.print_exc()
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QMessageBox.critical(
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self,
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"错误",
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f"登录请求失败：{str(e)}\n\n请确保后端服务已启动"
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)
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def _call_login_api(self, username, password):
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"""
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调用后端登录 API
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Args:
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username (str): 用户名
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password (str): 密码
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Returns:
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dict: API 响应结果
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"""
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url = f"{self.api_base_url}/login"
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params = {
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"username": username,
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"password": password
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}
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print(f"\n[登录请求] URL: {url}")
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print(f"[登录请求] 参数: {json.dumps(params, ensure_ascii=False)}")
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try:
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response = requests.post(
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url,
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json=params,
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timeout=10
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)
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response.raise_for_status()
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result = response.json()
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print(f"[登录响应] {json.dumps(result, ensure_ascii=False)}")
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return result
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except requests.exceptions.RequestException as e:
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print(f"[登录错误] HTTP 请求失败: {e}")
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return {
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"status": "error",
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"error": f"网络请求失败: {str(e)}"
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}
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except Exception as e:
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print(f"[登录错误] 未知错误: {e}")
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import traceback
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traceback.print_exc()
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return {
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"status": "error",
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"error": f"未知错误: {str(e)}"
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}
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def get_user_info(self):
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"""获取登录成功后的用户信息"""
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return self.user_info
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