class PlayerControlPanel(QFrame):
def __init__(self, app, parent=None):
super().__init__(parent)
self._app = app
class IconButton(QPushButton):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._playback_modes = list(PlaybackMode.__members__.values())
self._pm_alias_map = {
PlaybackMode.one_loop: '单曲循环',
PlaybackMode.sequential: '顺序播放',
PlaybackMode.loop: '循环播放',
PlaybackMode.random: '随机播放',
}
# initialize sub widgets
self._layout = QHBoxLayout(self)
self.previous_btn = IconButton(self)
self.pp_btn = IconButton(self)
self.next_btn = IconButton(self)
#: playback mode switch button
self.pms_btn = TextButton(self)
self.volume_btn = VolumeButton(self)
self.playlist_btn = IconButton(parent=self)
#: mark song as favorite button
self.like_btn = QPushButton(self)
self.mv_btn = TextButton('MV', self)
self.lyric_btn = TextButton('词', self)
self.download_btn = QPushButton(self)
self.toggle_video_btn = TextButton('△', self)
# toggle picture-in-picture button
self.toggle_pip_btn = TextButton('◲', self)
self.lyric_window = LyricWindow()
self.lyric_window.hide()
self.previous_btn.setObjectName('previous_btn')
self.pp_btn.setObjectName('pp_btn')
self.next_btn.setObjectName('next_btn')
self.playlist_btn.setObjectName('playlist_btn')
self.volume_btn.setObjectName('volume_btn')
self.pms_btn.setObjectName('pms_btn')
self.download_btn.setObjectName('download_btn')
self.like_btn.setObjectName('like_btn')
self.mv_btn.setObjectName('mv_btn')
self.lyric_btn.setObjectName('lyric_btn')
self.toggle_video_btn.setObjectName('toggle_video_btn')
self.toggle_pip_btn.setObjectName('toggle_pip_btn')
self.progress_slider = ProgressSlider(app=app, parent=self)
self.pms_btn.setToolTip('修改播放模式')
self.volume_btn.setToolTip('调整音量')
self.playlist_btn.setToolTip('显示当前播放列表')
self.mv_btn.setToolTip('播放 MV')
self.download_btn.setToolTip('下载歌曲（未实现，欢迎 PR）')
self.like_btn.setToolTip('收藏歌曲（未实现，欢迎 PR）')
self.pp_btn.setCheckable(True)
self.like_btn.setCheckable(True)
self.download_btn.setCheckable(True)
self.toggle_video_btn.hide()
self.toggle_pip_btn.hide()
self.song_title_label = SongBriefLabel(self._app)
self.song_source_label = QLabel('歌曲来源', parent=self)
self.song_title_label.setAlignment(Qt.AlignCenter)
self.duration_label = DurationLabel(app, parent=self)
self.position_label = ProgressLabel(app, parent=self)
self.song_source_label.setObjectName('song_source_label')
self.next_btn.clicked.connect(self._app.playlist.next)
self.previous_btn.clicked.connect(self._app.playlist.previous)
self.pp_btn.clicked.connect(self._app.player.toggle)
self.pms_btn.clicked.connect(self._switch_playback_mode)
self.lyric_btn.clicked.connect(self._toggle_lyric_window)
self.volume_btn.change_volume_needed.connect(
lambda volume: setattr(self._app.player, 'volume', volume))
player = self._app.player
player.state_changed.connect(self._on_player_state_changed,
aioqueue=True)
player.playlist.playback_mode_changed.connect(
self.on_playback_mode_changed, aioqueue=True)
player.playlist.song_changed.connect(self.on_player_song_changed,
aioqueue=True)
player.media_changed.connect(self.on_player_media_changed,
aioqueue=True)
player.volume_changed.connect(self.volume_btn.on_volume_changed)
self._app.live_lyric.sentence_changed.connect(
self.lyric_window.set_sentence)
self.lyric_window.play_previous_needed.connect(
player.playlist.previous)
self.lyric_window.play_next_needed.connect(player.playlist.next)
self._update_pms_btn_text()
self._setup_ui()
def _setup_ui(self):
# set widget layout
self.song_source_label.setFixedHeight(20)
self.progress_slider.setFixedHeight(20) # half of parent height
self.position_label.setFixedWidth(45)
self.duration_label.setFixedWidth(45)
# on macOS, we should set AlignVCenter flag
self.position_label.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
self.like_btn.setFixedSize(15, 15)
self.download_btn.setFixedSize(15, 15)
self.mv_btn.setFixedHeight(16)
self.lyric_btn.setFixedHeight(16)
self.progress_slider.setSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Preferred)
self._sub_layout = QVBoxLayout()
self._sub_top_layout = QHBoxLayout()
# add space to make top layout align with progress slider
self._sub_top_layout.addSpacing(3)
self._sub_top_layout.addWidget(self.song_source_label)
self._sub_top_layout.addSpacing(5)
self._sub_top_layout.addWidget(self.song_title_label)
self._sub_top_layout.addSpacing(5)
self._sub_top_layout.addStretch(0)
self._sub_top_layout.addWidget(self.like_btn)
self._sub_top_layout.addSpacing(8)
self._sub_top_layout.addWidget(self.mv_btn)
self._sub_top_layout.addSpacing(8)
self._sub_top_layout.addWidget(self.lyric_btn)
self._sub_top_layout.addSpacing(8)
self._sub_top_layout.addWidget(self.download_btn)
self._sub_top_layout.addSpacing(3)
self._sub_layout.addSpacing(3)
self._sub_layout.addLayout(self._sub_top_layout)
self._sub_layout.addWidget(self.progress_slider)
self._layout.addSpacing(20)
self._layout.addWidget(self.previous_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.pp_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.next_btn)
self._layout.addSpacing(26)
self._layout.addWidget(self.volume_btn)
# 18 = 200(left_panel_width) - 4 * 30(btn) - 20 - 8 - 8 -26
self._layout.addSpacing(18)
self._layout.addStretch(0)
self._layout.addWidget(self.position_label)
self._layout.addSpacing(7)
self._layout.addLayout(self._sub_layout)
self._layout.setStretchFactor(self._sub_layout, 1)
self._layout.addSpacing(7)
self._layout.addWidget(self.duration_label)
self._layout.addStretch(0)
self._layout.addSpacing(18)
self._layout.addWidget(self.pms_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.playlist_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.toggle_video_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.toggle_pip_btn)
self._layout.addSpacing(18)
self._layout.setSpacing(0)
self._layout.setContentsMargins(0, 0, 0, 0)
def _switch_playback_mode(self):
playlist = self._app.player.playlist
pm_total = len(self._playback_modes)
pm_idx = self._playback_modes.index(playlist.playback_mode)
if pm_idx < pm_total - 1:
pm_idx += 1
else:
pm_idx = 0
playlist.playback_mode = self._playback_modes[pm_idx]
def on_playback_mode_changed(self, playback_mode):
self._update_pms_btn_text()
def _update_pms_btn_text(self):
playback_mode = self._app.player.playlist.playback_mode
alias = self._pm_alias_map[playback_mode]
self.pms_btn.setText(alias)
def on_player_song_changed(self, song):
if song is None:
self.song_source_label.setText('歌曲来源')
self.song_title_label.setText('No song is playing.')
return
source_name_map = {
p.identifier: p.name
for p in self._app.library.list()
}
font_metrics = QFontMetrics(QApplication.font())
text = '{} - {}'.format(song.title_display, song.artists_name_display)
# width -> three button + source label + text <= progress slider
# three button: 63, source label: 150
elided_text = font_metrics.elidedText(
text, Qt.ElideRight,
self.progress_slider.width() - 200)
self.song_source_label.setText(source_name_map[song.source])
self.song_title_label.setText(elided_text)
loop = asyncio.get_event_loop()
loop.create_task(self.update_mv_btn_status(song))
def on_player_media_changed(self, media):
if media is not None and media.type_ == MediaType.audio:
metadata = media.metadata
if metadata.bitrate:
text = self.song_source_label.text()
bitrate_text = str(metadata.bitrate) + 'kbps'
self.song_source_label.setText('{} - {}'.format(
text, bitrate_text))
async def update_mv_btn_status(self, song):
try:
mv = await async_run(lambda: song.mv)
except ProviderIOError:
logger.exception('fetch song mv info failed')
self.mv_btn.setEnabled(False)
else:
if mv:
self.mv_btn.setToolTip(mv.name)
self.mv_btn.setEnabled(True)
else:
self.mv_btn.setEnabled(False)
def _on_player_state_changed(self, state):
self.pp_btn.setChecked(state == State.playing)
def _toggle_lyric_window(self):
if self.lyric_window.isVisible():
self.lyric_window.hide()
else:
self.lyric_window.show()
class PlayerControlPanel(QFrame):
def __init__(self, app, parent=None):
super().__init__(parent)
self._app = app
class IconButton(QPushButton):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# 按钮文字一般是一个 symbol，长度控制为 40 是满足需求的
self.setMaximumWidth(40)
self._playback_modes = list(PlaybackMode.__members__.values())
self._pm_alias_map = {
PlaybackMode.one_loop: '单曲循环',
PlaybackMode.sequential: '顺序播放',
PlaybackMode.loop: '循环播放',
PlaybackMode.random: '随机播放',
}
# initialize sub widgets
self._layout = QHBoxLayout(self)
self.previous_btn = IconButton(self)
self.pp_btn = IconButton(self)
self.next_btn = IconButton(self)
#: playback mode switch button
self.pms_btn = QPushButton(self)
self.volume_btn = VolumeButton(self)
self.volume_btn.change_volume_needed.connect(
lambda volume: setattr(self._app.player, 'volume', volume))
self.playlist_btn = IconButton(parent=self)
#: mark song as favorite button
self.like_btn = QPushButton(self)
self.mv_btn = QPushButton('MV', self)
self.download_btn = QPushButton(self)
self.toggle_video_btn = QPushButton('△', self)
self.previous_btn.setObjectName('previous_btn')
self.pp_btn.setObjectName('pp_btn')
self.next_btn.setObjectName('next_btn')
self.playlist_btn.setObjectName('playlist_btn')
self.volume_btn.setObjectName('volume_btn')
self.pms_btn.setObjectName('pms_btn')
self.download_btn.setObjectName('download_btn')
self.like_btn.setObjectName('like_btn')
self.mv_btn.setObjectName('mv_btn')
self.toggle_video_btn.setObjectName('toggle_video_btn')
self.progress_slider = ProgressSlider(self)
self.pms_btn.setToolTip('修改播放模式')
self.volume_btn.setToolTip('调整音量')
self.playlist_btn.setToolTip('显示当前播放列表')
self.progress_slider.setToolTip('拖动调节进度')
self.mv_btn.setToolTip('播放 MV')
self.download_btn.setToolTip('下载歌曲（未实现，欢迎 PR）')
self.like_btn.setToolTip('收藏歌曲（未实现，欢迎 PR）')
self.pp_btn.setCheckable(True)
self.like_btn.setCheckable(True)
self.download_btn.setCheckable(True)
self.toggle_video_btn.hide()
self.song_title_label = QLabel('No song is playing.', parent=self)
self.song_source_label = QLabel('歌曲来源', parent=self)
self.song_title_label.setAlignment(Qt.AlignCenter)
self.duration_label = QLabel('00:00', parent=self)
self.position_label = QLabel('00:00', parent=self)
self.song_source_label.setObjectName('song_source_label')
self.next_btn.clicked.connect(self._app.player.play_next)
self.previous_btn.clicked.connect(self._app.player.play_previous)
self.pp_btn.clicked.connect(self._app.player.toggle)
self.pms_btn.clicked.connect(self._switch_playback_mode)
self._app.player.state_changed.connect(self._on_player_state_changed)
self._app.player.position_changed.connect(self.on_position_changed)
self._app.player.duration_changed.connect(self.on_duration_changed)
self._app.player.playlist.playback_mode_changed.connect(
self.on_playback_mode_changed)
self._app.player.playlist.song_changed.connect(
self.on_player_song_changed, aioqueue=True)
self.progress_slider.resume_player_needed.connect(
self._app.player.resume)
self.progress_slider.pause_player_needed.connect(
self._app.player.pause)
self.progress_slider.change_position_needed.connect(
lambda value: setattr(self._app.player, 'position', value))
self._update_pms_btn_text()
self._setup_ui()
def _setup_ui(self):
# set widget layout
self.progress_slider.setMinimumWidth(480)
self.progress_slider.setMaximumWidth(600)
self.song_source_label.setFixedHeight(20)
self.progress_slider.setFixedHeight(20) # half of parent height
self.position_label.setFixedWidth(45)
self.duration_label.setFixedWidth(45)
self.like_btn.setFixedSize(15, 15)
self.download_btn.setFixedSize(15, 15)
self.mv_btn.setFixedHeight(16)
self.progress_slider.setSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Preferred)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Minimum)
self._sub_layout = QVBoxLayout()
self._sub_top_layout = QHBoxLayout()
# add space to make top layout align with progress slider
self._sub_top_layout.addSpacing(3)
self._sub_top_layout.addWidget(self.song_source_label)
self._sub_top_layout.addSpacing(5)
self._sub_top_layout.addWidget(self.song_title_label)
self._sub_top_layout.addStretch(0)
self._sub_top_layout.addWidget(self.like_btn)
self._sub_top_layout.addSpacing(8)
self._sub_top_layout.addWidget(self.mv_btn)
self._sub_top_layout.addSpacing(8)
self._sub_top_layout.addWidget(self.download_btn)
self._sub_top_layout.addSpacing(3)
self._sub_layout.addSpacing(3)
self._sub_layout.addLayout(self._sub_top_layout)
self._sub_layout.addWidget(self.progress_slider)
self._layout.addSpacing(20)
self._layout.addWidget(self.previous_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.pp_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.next_btn)
self._layout.addSpacing(26)
self._layout.addWidget(self.volume_btn)
self._layout.addStretch(0)
self._layout.addWidget(self.position_label)
self._layout.addSpacing(7)
self._layout.addLayout(self._sub_layout)
self._layout.addSpacing(7)
self._layout.addWidget(self.duration_label)
self._layout.addSpacing(5)
self._layout.addStretch(0)
self._layout.addWidget(self.pms_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.playlist_btn)
self._layout.addSpacing(8)
self._layout.addWidget(self.toggle_video_btn)
self._layout.addSpacing(18)
self._layout.setSpacing(0)
self._layout.setContentsMargins(0, 0, 0, 0)
def _switch_playback_mode(self):
playlist = self._app.player.playlist
pm_total = len(self._playback_modes)
pm_idx = self._playback_modes.index(playlist.playback_mode)
if pm_idx < pm_total - 1:
pm_idx += 1
else:
pm_idx = 0
playlist.playback_mode = self._playback_modes[pm_idx]
def on_duration_changed(self, duration):
duration = duration * 1000
m, s = parse_ms(duration)
t = QTime(0, m, s)
self.progress_slider.set_duration(duration)
self.duration_label.setText(t.toString('mm:ss'))
def on_position_changed(self, position):
if position is None:
return
position = position * 1000
m, s = parse_ms(position)
t = QTime(0, m, s)
self.position_label.setText(t.toString('mm:ss'))
self.progress_slider.update_state(position)
def on_playback_mode_changed(self, playback_mode):
self._update_pms_btn_text()
def _update_pms_btn_text(self):
playback_mode = self._app.player.playlist.playback_mode
alias = self._pm_alias_map[playback_mode]
self.pms_btn.setText(alias)
def on_player_song_changed(self, song):
if song is None:
self.song_source_label.setText('歌曲来源')
self.song_title_label.setText('No song is playing.')
return
source_name_map = {
p.identifier: p.name
for p in self._app.library.list()
}
font_metrics = QFontMetrics(QApplication.font())
text = '{} - {}'.format(song.title_display, song.artists_name_display)
elided_text = font_metrics.elidedText(
text, Qt.ElideRight,
self.progress_slider.width() - 100)
self.song_source_label.setText(source_name_map[song.source])
self.song_title_label.setText(elided_text)
loop = asyncio.get_event_loop()
loop.create_task(self.update_mv_btn_status(song))
async def update_mv_btn_status(self, song):
mv = await async_run(lambda: song.mv)
if mv:
self.mv_btn.setToolTip(mv.name)
self.mv_btn.setEnabled(True)
else:
self.mv_btn.setEnabled(False)
def _on_player_state_changed(self, state):
self.pp_btn.setChecked(state == State.playing)