File size: 10,103 Bytes
387c3d6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 | from PyQt6.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout,
QPushButton, QFileDialog, QGroupBox,
QTableWidget, QAbstractItemView, QHeaderView,
QTableWidgetItem, QProgressBar, QLabel)
from PyQt6.QtCore import pyqtSignal, QDateTime, Qt
class FileReceiveWidget(QWidget):
"""
专门用于文件接收的UI (带进度条和速率显示)
"""
# 信号: (bool)
enable_reception_changed = pyqtSignal(bool)
def __init__(self, parent = None):
super().__init__(parent)
self.is_enabled = False
self.received_files = [] # 存储 (filename, timestamp, file_data)
self.init_ui()
def init_ui(self):
group = QGroupBox("接收文件")
layout = QVBoxLayout(group)
# --- 启用/禁用 切换按钮 ---
self.btn_toggle_receive = QPushButton("启用文件接收")
self.btn_toggle_receive.setCheckable(True)
self.btn_toggle_receive.toggled.connect(self.on_toggle_receive)
layout.addWidget(self.btn_toggle_receive)
# === 进度区域（保持不变）===
self.progress_group = QGroupBox("接收进度")
self.progress_group.setVisible(False)
progress_layout = QVBoxLayout(self.progress_group)
progress_layout.setSpacing(8)
progress_layout.setContentsMargins(10, 10, 10, 10)
self.lbl_current_file = QLabel("等待接收...")
self.lbl_current_file.setStyleSheet("font-weight: bold; color: #333;")
progress_layout.addWidget(self.lbl_current_file)
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)
info_layout = QHBoxLayout()
self.lbl_progress_info = QLabel("等待数据...")
self.lbl_progress_info.setStyleSheet("color: #555;")
info_layout.addWidget(self.lbl_progress_info)
info_layout.addStretch()
self.lbl_speed = QLabel("速率: -- Mbps")
self.lbl_speed.setStyleSheet("color: #0066cc; font-weight: bold;")
info_layout.addWidget(self.lbl_speed)
progress_layout.addLayout(info_layout)
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)
# --- 文件列表（修改部分）---
self.table_files = QTableWidget()
self.table_files.setColumnCount(3)
self.table_files.setHorizontalHeaderLabels(["文件名", "大小", "接收时间"]) # 简化标题
self.table_files.setSelectionBehavior(QAbstractItemView.SelectionBehavior.SelectRows)
self.table_files.setEditTriggers(QAbstractItemView.EditTrigger.NoEditTriggers)
# 🔥 关键修改：设置列宽
# 文件名：自动拉伸填充剩余空间
self.table_files.horizontalHeader().setSectionResizeMode(0, QHeaderView.ResizeMode.Stretch)
# 大小：固定宽度 100 像素（足够显示数字）
self.table_files.horizontalHeader().setSectionResizeMode(1, QHeaderView.ResizeMode.Fixed)
self.table_files.setColumnWidth(1, 100)
# 接收时间：固定宽度 160 像素（显示完整时间戳）
self.table_files.horizontalHeader().setSectionResizeMode(2, QHeaderView.ResizeMode.Fixed)
self.table_files.setColumnWidth(2, 160)
layout.addWidget(self.table_files)
# --- 保存按钮（保持不变）---
self.btn_save = QPushButton("保存选中的文件")
self.btn_save.setEnabled(False)
self.btn_save.setMinimumHeight(35)
layout.addWidget(self.btn_save)
# 设置主布局
main_layout = QVBoxLayout(self)
main_layout.addWidget(group)
# 连接信号
self.table_files.itemSelectionChanged.connect(
lambda: self.btn_save.setEnabled(len(self.table_files.selectedItems()) > 0)
)
self.btn_save.clicked.connect(self.save_selected_file)
self.set_enabled(False)
def on_toggle_receive(self, checked):
if checked:
self.btn_toggle_receive.setText("文件接收中 (点击停止)")
self.enable_reception_changed.emit(True)
else:
self.btn_toggle_receive.setText("启用文件接收")
self.enable_reception_changed.emit(False)
self.reset_progress()
def add_received_file(self, filename, file_data):
"""[公共槽] 由 MainWindow 连接到 Worker 的信号"""
timestamp = QDateTime.currentDateTime()
file_size = len(file_data)
# 1. 存储数据
self.received_files.append((filename, timestamp, file_data))
# 2. 更新表格
row = self.table_files.rowCount()
self.table_files.insertRow(row)
self.table_files.setItem(row, 0, QTableWidgetItem(filename))
self.table_files.setItem(row, 1, QTableWidgetItem(str(file_size)))
self.table_files.setItem(row, 2, QTableWidgetItem(timestamp.toString("yyyy-MM-dd hh:mm:ss")))
self.table_files.scrollToBottom()
def save_selected_file(self):
selected_rows = self.table_files.selectionModel().selectedRows()
if not selected_rows:
return
row_index = selected_rows[0].row()
if row_index >= len(self.received_files):
return
filename, timestamp, file_data = self.received_files[row_index]
save_path, _ = QFileDialog.getSaveFileName(self, "保存文件", filename, "所有文件 (*)")
if save_path:
try:
with open(save_path, 'wb') as f:
f.write(file_data)
except Exception as e:
print(f"File save error: {e}")
def set_enabled(self, enabled):
"""由主窗口调用,在连接后启用"""
self.is_enabled = enabled
self.btn_toggle_receive.setEnabled(enabled)
self.btn_save.setEnabled(enabled and len(self.table_files.selectedItems()) > 0)
self.table_files.setEnabled(enabled)
if not enabled:
self.btn_toggle_receive.setChecked(False)
self.reset_progress()
# === 新增: 进度控制方法 ===
def start_receiving(self, filename, total_size):
"""开始接收文件时调用"""
self.progress_group.setVisible(True)
self.lbl_current_file.setText(f"正在接收: {filename}")
self.progress_bar.setValue(0)
size_str = self.format_file_size(total_size)
self.lbl_progress_info.setText(f"0 B / {size_str}")
self.lbl_speed.setText("速率: -- Mbps")
self.lbl_time_remaining.setText("预计剩余: 计算中...")
def update_progress(self, received_bytes, total_bytes, speed_mbps):
"""
更新接收进度
:param received_bytes: 已接收字节数
: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((received_bytes / total_bytes) * 100)
self.progress_bar.setValue(progress)
# 更新已接收信息
recv_str = self.format_file_size(received_bytes)
total_str = self.format_file_size(total_bytes)
self.lbl_progress_info.setText(f"{recv_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 - received_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_receiving(self, success = True, message = ""):
"""接收完成时调用"""
if success:
self.progress_bar.setValue(100)
self.lbl_current_file.setText("接收完成!")
self.lbl_current_file.setStyleSheet("font-weight: bold; color: green;")
self.lbl_progress_info.setText("文件已保存到列表")
self.lbl_progress_info.setStyleSheet("color: green;")
self.lbl_time_remaining.setText("已完成")
else:
self.lbl_current_file.setText(f"接收失败: {message}")
self.lbl_current_file.setStyleSheet("font-weight: bold; color: red;")
self.lbl_time_remaining.setText("已中断")
def reset_progress(self):
"""重置进度显示"""
self.progress_group.setVisible(False)
self.progress_bar.setValue(0)
self.lbl_current_file.setText("等待接收...")
self.lbl_current_file.setStyleSheet("font-weight: bold; color: #333;")
self.lbl_progress_info.setText("等待数据...")
self.lbl_progress_info.setStyleSheet("color: #555;")
self.lbl_speed.setText("速率: -- Mbps")
self.lbl_time_remaining.setText("预计剩余: --")
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"
# === 结束新增 === |