from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLineEdit, QPushButton, QFileDialog, QGroupBox, QLabel, QProgressBar) from PyQt6.QtCore import pyqtSignal import os class FileSendWidget(QWidget): """ 专门用于文件发送的UI (带进度条和速率显示) """ # 信号: (file_path) send_file_clicked = pyqtSignal(str) def __init__(self, parent = None): super().__init__(parent) self.is_enabled = False self.init_ui() self.setFixedHeight(450) def init_ui(self): group = QGroupBox("发送文件") layout = QVBoxLayout(group) # --- 文件选择 --- file_layout = QHBoxLayout() self.txt_file_path = QLineEdit() self.txt_file_path.setReadOnly(True) self.txt_file_path.setPlaceholderText("请选择要发送的文件...") file_layout.addWidget(self.txt_file_path) self.btn_browse = QPushButton("浏览...") file_layout.addWidget(self.btn_browse) layout.addLayout(file_layout) # === 文件信息显示区域 === self.file_info_group = QGroupBox("文件信息") self.file_info_group.setVisible(False) file_info_layout = QVBoxLayout(self.file_info_group) file_info_layout.setSpacing(5) file_info_layout.setContentsMargins(10, 10, 10, 10) # 文件名 name_layout = QHBoxLayout() name_layout.addWidget(QLabel("文件名:")) self.lbl_file_name = QLabel("") self.lbl_file_name.setStyleSheet("font-weight: bold;") name_layout.addWidget(self.lbl_file_name) name_layout.addStretch() file_info_layout.addLayout(name_layout) # 文件大小 size_layout = QHBoxLayout() size_layout.addWidget(QLabel("文件大小:")) self.lbl_file_size = QLabel("") size_layout.addWidget(self.lbl_file_size) size_layout.addStretch() file_info_layout.addLayout(size_layout) # 文件类型 type_layout = QHBoxLayout() type_layout.addWidget(QLabel("文件类型:")) self.lbl_file_type = QLabel("") type_layout.addWidget(self.lbl_file_type) type_layout.addStretch() file_info_layout.addLayout(type_layout) # 完整路径 path_layout = QVBoxLayout() path_layout.addWidget(QLabel("完整路径:")) self.lbl_full_path = QLabel("") self.lbl_full_path.setWordWrap(True) self.lbl_full_path.setStyleSheet("color: gray; font-size: 10px;") path_layout.addWidget(self.lbl_full_path) file_info_layout.addLayout(path_layout) layout.addWidget(self.file_info_group) # === 新增: 传输进度区域 === self.progress_group = QGroupBox("传输进度") self.progress_group.setVisible(False) progress_layout = QVBoxLayout(self.progress_group) progress_layout.setSpacing(8) progress_layout.setContentsMargins(10, 10, 10, 10) # 进度条 self.progress_bar = QProgressBar() self.progress_bar.setMinimum(0) self.progress_bar.setMaximum(100) self.progress_bar.setValue(0) self.progress_bar.setTextVisible(True) self.progress_bar.setFormat("%p%") progress_layout.addWidget(self.progress_bar) # 传输信息 info_layout = QHBoxLayout() # 已发送 / 总大小 self.lbl_progress_info = QLabel("准备发送...") self.lbl_progress_info.setStyleSheet("color: #555;") info_layout.addWidget(self.lbl_progress_info) info_layout.addStretch() # 实时速率 self.lbl_speed = QLabel("速率: -- MB/s") self.lbl_speed.setStyleSheet("color: #0066cc; font-weight: bold;") info_layout.addWidget(self.lbl_speed) progress_layout.addLayout(info_layout) # 预计剩余时间 time_layout = QHBoxLayout() self.lbl_time_remaining = QLabel("预计剩余: --") self.lbl_time_remaining.setStyleSheet("color: #666;") time_layout.addWidget(self.lbl_time_remaining) time_layout.addStretch() progress_layout.addLayout(time_layout) layout.addWidget(self.progress_group) # === 结束新增 === # 添加弹性空间 layout.addStretch() # 发送按钮 self.btn_send = QPushButton("发送文件") self.btn_send.setEnabled(False) self.btn_send.setMinimumHeight(35) layout.addWidget(self.btn_send) # 设置主布局 main_layout = QVBoxLayout(self) main_layout.addWidget(group) # 连接信号 self.btn_browse.clicked.connect(self.browse_file) self.btn_send.clicked.connect(self.on_send_click) self.set_enabled(False) def browse_file(self): file_path, _ = QFileDialog.getOpenFileName(self, "选择文件", "", "所有文件 (*)") if file_path: self.txt_file_path.setText(file_path) self.update_file_info(file_path) # 重置进度显示 self.reset_progress() if self.is_enabled: self.btn_send.setEnabled(True) def update_file_info(self, file_path): """更新文件信息显示""" try: file_name = os.path.basename(file_path) file_size = os.path.getsize(file_path) file_ext = os.path.splitext(file_path)[1] size_str = self.format_file_size(file_size) self.lbl_file_name.setText(file_name) self.lbl_file_size.setText(size_str) self.lbl_file_type.setText(file_ext if file_ext else "无扩展名") self.lbl_full_path.setText(file_path) self.file_info_group.setVisible(True) except Exception as e: self.lbl_file_name.setText("错误") self.lbl_file_size.setText(f"无法读取: {str(e)}") self.lbl_file_type.setText("未知") self.lbl_full_path.setText(file_path) self.file_info_group.setVisible(True) def format_file_size(self, size_bytes): """格式化文件大小""" for unit in ['B', 'KB', 'MB', 'GB', 'TB']: if size_bytes < 1024.0: return f"{size_bytes:.2f} {unit}" size_bytes /= 1024.0 return f"{size_bytes:.2f} PB" def on_send_click(self): file_path = self.txt_file_path.text() if file_path: self.start_transfer() self.send_file_clicked.emit(file_path) def set_enabled(self, enabled): """由主窗口调用,在连接后启用""" self.is_enabled = enabled self.btn_browse.setEnabled(enabled) self.btn_send.setEnabled(enabled and bool(self.txt_file_path.text())) # === 新增: 进度控制方法 === def start_transfer(self): """开始传输时调用""" self.progress_group.setVisible(True) self.progress_bar.setValue(0) self.lbl_progress_info.setText("正在发送...") self.lbl_speed.setText("速率: -- MB/s") self.lbl_time_remaining.setText("预计剩余: 计算中...") self.btn_send.setEnabled(False) def update_progress(self, sent_bytes, total_bytes, speed_mbps): """ 更新进度信息 :param sent_bytes: 已发送字节数 :param total_bytes: 总字节数 :param speed_mbps: 实时速率 (Mbps) """ if total_bytes == 0: return # 更新进度条 progress = int((sent_bytes / total_bytes) * 100) self.progress_bar.setValue(progress) # 更新已发送信息 sent_str = self.format_file_size(sent_bytes) total_str = self.format_file_size(total_bytes) self.lbl_progress_info.setText(f"{sent_str} / {total_str}") # 更新速率 (显示为 Mbps) self.lbl_speed.setText(f"速率: {speed_mbps:.2f} Mbps") # 计算预计剩余时间 if speed_mbps > 0: remaining_bytes = total_bytes - sent_bytes remaining_bits = remaining_bytes * 8 remaining_seconds = remaining_bits / (speed_mbps * 1_000_000) if remaining_seconds < 60: time_str = f"{remaining_seconds:.1f} 秒" elif remaining_seconds < 3600: time_str = f"{remaining_seconds / 60:.1f} 分钟" else: time_str = f"{remaining_seconds / 3600:.1f} 小时" self.lbl_time_remaining.setText(f"预计剩余: {time_str}") else: self.lbl_time_remaining.setText("预计剩余: 计算中...") def finish_transfer(self, success = True, message = ""): """传输完成时调用""" if success: self.progress_bar.setValue(100) self.lbl_progress_info.setText("传输完成!") self.lbl_progress_info.setStyleSheet("color: green; font-weight: bold;") self.lbl_time_remaining.setText("已完成") else: self.lbl_progress_info.setText(f"传输失败: {message}") self.lbl_progress_info.setStyleSheet("color: red; font-weight: bold;") self.lbl_time_remaining.setText("已中断") self.btn_send.setEnabled(True) def reset_progress(self): """重置进度显示""" self.progress_group.setVisible(False) self.progress_bar.setValue(0) self.lbl_progress_info.setText("准备发送...") self.lbl_progress_info.setStyleSheet("color: #555;") self.lbl_speed.setText("速率: -- MB/s") self.lbl_time_remaining.setText("预计剩余: --") # === 结束新增 ===