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336 lines
11 KiB
336 lines
11 KiB
# P2P Network Communication - Media Player Widget
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"""
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媒体播放器界面组件
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实现音频和视频播放器界面
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需求: 6.3, 6.4, 6.5, 6.7
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"""
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import logging
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from typing import Optional
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from PyQt6.QtWidgets import (
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QWidget, QVBoxLayout, QHBoxLayout, QLabel, QPushButton,
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QSlider, QFrame, QStackedWidget, QSizePolicy
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)
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from PyQt6.QtCore import Qt, pyqtSignal, QTimer
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from client.media_player import PlaybackState
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logger = logging.getLogger(__name__)
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class MediaPlayerWidget(QWidget):
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"""
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媒体播放器界面组件
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实现音频播放器界面 (需求 6.3)
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实现视频播放器界面 (需求 6.4)
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实现播放控制按钮 (需求 6.5)
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实现全屏模式 (需求 6.7)
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"""
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# 信号定义
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play_requested = pyqtSignal()
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pause_requested = pyqtSignal()
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stop_requested = pyqtSignal()
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seek_requested = pyqtSignal(float) # position in seconds
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volume_changed = pyqtSignal(float) # volume 0.0-1.0
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fullscreen_requested = pyqtSignal(bool)
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def __init__(self, parent=None):
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super().__init__(parent)
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self._is_video = False
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self._duration = 0.0
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self._is_seeking = False
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self._setup_ui()
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self._connect_signals()
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# 更新定时器
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self._update_timer = QTimer()
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self._update_timer.setInterval(100)
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self._update_timer.timeout.connect(self._on_update_timer)
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logger.info("MediaPlayerWidget initialized")
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def _setup_ui(self) -> None:
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"""设置UI"""
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layout = QVBoxLayout(self)
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layout.setContentsMargins(0, 0, 0, 0)
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layout.setSpacing(0)
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# 视频显示区域
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self._video_frame = QFrame()
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self._video_frame.setStyleSheet("background-color: black;")
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self._video_frame.setMinimumHeight(200)
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self._video_frame.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding)
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video_layout = QVBoxLayout(self._video_frame)
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video_layout.setContentsMargins(0, 0, 0, 0)
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self._video_label = QLabel("无媒体")
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self._video_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
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self._video_label.setStyleSheet("color: #666; font-size: 16px;")
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video_layout.addWidget(self._video_label)
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layout.addWidget(self._video_frame, 1)
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# 控制栏
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self._control_bar = self._create_control_bar()
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layout.addWidget(self._control_bar)
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def _create_control_bar(self) -> QWidget:
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"""创建控制栏"""
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bar = QFrame()
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bar.setFixedHeight(80)
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bar.setStyleSheet("""
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QFrame {
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background-color: #2d2d2d;
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}
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""")
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layout = QVBoxLayout(bar)
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layout.setContentsMargins(10, 5, 10, 5)
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layout.setSpacing(5)
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# 进度条
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progress_layout = QHBoxLayout()
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progress_layout.setSpacing(10)
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self._current_time_label = QLabel("00:00")
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self._current_time_label.setStyleSheet("color: white; font-size: 12px;")
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self._current_time_label.setFixedWidth(50)
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progress_layout.addWidget(self._current_time_label)
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self._progress_slider = QSlider(Qt.Orientation.Horizontal)
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self._progress_slider.setRange(0, 1000)
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self._progress_slider.setValue(0)
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self._progress_slider.setStyleSheet("""
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QSlider::groove:horizontal {
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border: none;
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height: 4px;
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background: #555;
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border-radius: 2px;
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}
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QSlider::handle:horizontal {
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background: white;
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width: 12px;
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height: 12px;
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margin: -4px 0;
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border-radius: 6px;
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}
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QSlider::sub-page:horizontal {
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background: #4a90d9;
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border-radius: 2px;
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}
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""")
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progress_layout.addWidget(self._progress_slider, 1)
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self._total_time_label = QLabel("00:00")
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self._total_time_label.setStyleSheet("color: white; font-size: 12px;")
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self._total_time_label.setFixedWidth(50)
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progress_layout.addWidget(self._total_time_label)
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layout.addLayout(progress_layout)
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# 控制按钮
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button_layout = QHBoxLayout()
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button_layout.setSpacing(10)
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button_style = """
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QPushButton {
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background-color: transparent;
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color: white;
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border: none;
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font-size: 18px;
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padding: 5px 10px;
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}
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QPushButton:hover {
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background-color: #444;
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border-radius: 5px;
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}
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"""
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self._play_btn = QPushButton("▶")
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self._play_btn.setStyleSheet(button_style)
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self._play_btn.setFixedSize(40, 40)
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self._play_btn.clicked.connect(self._on_play_clicked)
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button_layout.addWidget(self._play_btn)
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self._stop_btn = QPushButton("⏹")
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self._stop_btn.setStyleSheet(button_style)
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self._stop_btn.setFixedSize(40, 40)
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self._stop_btn.clicked.connect(self._on_stop_clicked)
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button_layout.addWidget(self._stop_btn)
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button_layout.addStretch()
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# 音量控制
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self._volume_btn = QPushButton("🔊")
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self._volume_btn.setStyleSheet(button_style)
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self._volume_btn.setFixedSize(40, 40)
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button_layout.addWidget(self._volume_btn)
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self._volume_slider = QSlider(Qt.Orientation.Horizontal)
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self._volume_slider.setRange(0, 100)
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self._volume_slider.setValue(100)
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self._volume_slider.setFixedWidth(100)
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self._volume_slider.setStyleSheet("""
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QSlider::groove:horizontal {
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border: none;
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height: 4px;
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background: #555;
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border-radius: 2px;
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}
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QSlider::handle:horizontal {
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background: white;
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width: 10px;
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height: 10px;
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margin: -3px 0;
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border-radius: 5px;
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}
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QSlider::sub-page:horizontal {
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background: #4a90d9;
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border-radius: 2px;
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}
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""")
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button_layout.addWidget(self._volume_slider)
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# 全屏按钮
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self._fullscreen_btn = QPushButton("⛶")
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self._fullscreen_btn.setStyleSheet(button_style)
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self._fullscreen_btn.setFixedSize(40, 40)
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self._fullscreen_btn.clicked.connect(self._on_fullscreen_clicked)
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button_layout.addWidget(self._fullscreen_btn)
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layout.addLayout(button_layout)
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return bar
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def _connect_signals(self) -> None:
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"""连接信号"""
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self._progress_slider.sliderPressed.connect(self._on_slider_pressed)
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self._progress_slider.sliderReleased.connect(self._on_slider_released)
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self._volume_slider.valueChanged.connect(self._on_volume_changed)
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def _format_time(self, seconds: float) -> str:
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"""格式化时间"""
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minutes = int(seconds // 60)
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secs = int(seconds % 60)
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return f"{minutes:02d}:{secs:02d}"
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def _on_play_clicked(self) -> None:
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"""处理播放/暂停按钮点击"""
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if self._play_btn.text() == "▶":
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self.play_requested.emit()
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else:
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self.pause_requested.emit()
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def _on_stop_clicked(self) -> None:
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"""处理停止按钮点击"""
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self.stop_requested.emit()
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def _on_fullscreen_clicked(self) -> None:
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"""处理全屏按钮点击"""
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self.fullscreen_requested.emit(True)
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def _on_slider_pressed(self) -> None:
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"""进度条按下"""
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self._is_seeking = True
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def _on_slider_released(self) -> None:
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"""进度条释放"""
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self._is_seeking = False
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if self._duration > 0:
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position = (self._progress_slider.value() / 1000) * self._duration
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self.seek_requested.emit(position)
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def _on_volume_changed(self, value: int) -> None:
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"""音量变化"""
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volume = value / 100.0
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self.volume_changed.emit(volume)
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if value == 0:
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self._volume_btn.setText("🔇")
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elif value < 50:
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self._volume_btn.setText("🔉")
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else:
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self._volume_btn.setText("🔊")
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def _on_update_timer(self) -> None:
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"""更新定时器回调"""
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# 由外部调用update_position更新
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pass
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# ==================== 公共方法 ====================
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def set_media_info(self, file_name: str, duration: float, is_video: bool = False) -> None:
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"""
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设置媒体信息
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Args:
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file_name: 文件名
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duration: 时长（秒）
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is_video: 是否是视频
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"""
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self._duration = duration
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self._is_video = is_video
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self._video_label.setText(file_name)
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self._total_time_label.setText(self._format_time(duration))
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self._progress_slider.setValue(0)
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self._current_time_label.setText("00:00")
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def update_position(self, position: float) -> None:
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"""
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更新播放位置
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Args:
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position: 当前位置（秒）
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"""
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if not self._is_seeking and self._duration > 0:
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slider_value = int((position / self._duration) * 1000)
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self._progress_slider.setValue(slider_value)
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self._current_time_label.setText(self._format_time(position))
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def update_state(self, state: PlaybackState) -> None:
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"""
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更新播放状态
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Args:
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state: 播放状态
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"""
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if state == PlaybackState.PLAYING:
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self._play_btn.setText("⏸")
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self._update_timer.start()
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elif state == PlaybackState.PAUSED:
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self._play_btn.setText("▶")
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self._update_timer.stop()
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elif state == PlaybackState.STOPPED:
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self._play_btn.setText("▶")
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self._update_timer.stop()
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self._progress_slider.setValue(0)
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self._current_time_label.setText("00:00")
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def set_volume(self, volume: float) -> None:
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"""
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设置音量
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Args:
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volume: 音量 (0.0-1.0)
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"""
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self._volume_slider.setValue(int(volume * 100))
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def clear(self) -> None:
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"""清空播放器"""
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self._duration = 0.0
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self._video_label.setText("无媒体")
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self._total_time_label.setText("00:00")
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self._current_time_label.setText("00:00")
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self._progress_slider.setValue(0)
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self._play_btn.setText("▶")
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self._update_timer.stop()
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