def show_song(song, uri_length=None, brief=False):
"""以一行文字的方式显示一首歌的信息
:param uri_length: 控制 song uri 的长度
:param brief: 是否只显示简要信息
"""
artists_name = song.artists_name_display
title = _fit_text(song.title_display, 18, filling=False)
album_name = song.album_name_display
song_uri = get_url(song)
if uri_length is not None:
song_uri = _fit_text(song_uri, uri_length)
if brief:
artists_name = _fit_text(artists_name, 20, filling=False)
s = '{song}\t# {title} - {artists_name}'.format(
song=song_uri, title=title, artists_name=artists_name)
return s
# XXX: 这个操作可能会产生网络请求
album_uri = get_url(song.album)
artists_uri = ','.join(get_url(artist) for artist in song.artists)
msgs = (
'provider: {}'.format(song.source),
' uri: {}'.format(song_uri),
' title: {}'.format(song.title),
'duration: {}'.format(song.duration),
' url: {}'.format(song.url),
' artists: {}\t# {}'.format(artists_uri, artists_name),
' album: {}\t# {}'.format(album_uri, album_name),
)
return '\n'.join(msgs)
def show_album(album, brief=False):
if brief:
return '{uri}\t# {name} - {artists_name}'.format(
uri=get_url(album),
name=album.name,
artists_name=album.artists_name)
msgs = [
'provider: {}'.format(album.source),
'identifier: {}'.format(album.identifier),
'name: {}'.format(album.name),
]
if album.artists is not None:
artists = album.artists
artists_id = ','.join([str(artist.identifier) for artist in artists])
artists_name = ','.join([artist.name for artist in artists])
msgs_artists = [
'artists: {}\t#{}'.format(artists_id, artists_name)
]
msgs += msgs_artists
msgs_songs_header = ['songs::']
msgs_songs = ['\t' + each for each in show_songs(album.songs).split('\n')]
msgs += msgs_songs_header
msgs += msgs_songs
return '\n'.join(msgs)
def fetchMore(self, _=QModelIndex()):
expect_len = 10
albums = list(itertools.islice(self.albums_g, expect_len))
acture_len = len(albums)
colors = [
random.choice(list(COLORS.values())) for _ in range(0, acture_len)
]
if acture_len < expect_len:
self._maybe_has_more = False
begin = len(self.albums)
self.beginInsertRows(QModelIndex(), begin, begin + acture_len - 1)
self.albums.extend(albums)
self.colors.extend(colors)
self.endInsertRows()
# FIXME: since album.cover may trigger web request,
# this may block the UI
for album in albums:
cover = album.cover
if cover: # check if cover url is valid
# FIXME: check if cover is a media object
if not isinstance(cover, str):
cover = cover.url
self.fetch_image(cover,
self._fetch_image_callback(album),
uid=get_url(album) + '/cover')
def cb(future):
if not future.done():
return
content = future.result()
img = QImage()
img.loadFromData(content)
pixmap = QPixmap(img)
uri = get_url(album)
self.pixmaps[uri] = pixmap
def show_artist(artist, brief=False):
if brief:
return '{uri}\t# {name}'.format(uri=get_url(artist), name=artist.name)
msgs = [
'provider: {}'.format(artist.source),
'identifier: {}'.format(artist.identifier),
'name: {}'.format(artist.name),
]
if artist.songs:
songs_header = ['songs::']
songs = ['\t' + each for each in show_songs(artist.songs).split('\n')]
msgs += songs_header
msgs += songs
return '\n'.join(msgs)
def remove(self, song):
if song in self.models:
url = get_url(song)
with open(self.fpath, 'r+', encoding='utf-8') as f:
lines = []
for line in f:
if line.startswith(url):
continue
lines.append(line)
f.seek(0)
f.write(''.join(lines))
f.truncate()
# 确保最后写入一个换行符，让文件更加美观
if not lines[-1].endswith('\n'):
f.write('\n')
self.models.remove(song)
return True
def data(self, index, role):
offset = index.row()
if not index.isValid() or offset >= len(self.albums):
return None
album = self.albums[offset]
if role == Qt.DecorationRole:
uri = get_url(album)
pixmap = self.pixmaps.get(uri)
if pixmap is not None:
return pixmap
color_str = self.colors[offset]
color = QColor(color_str)
color.setAlphaF(0.8)
return color
elif role == Qt.DisplayRole:
return album.name
elif role == Qt.UserRole:
return album
return None
def _to_uri(self, model):
return get_url(model)
def show_songs(songs):
uri_length = max((len(get_url(song)) for song in songs)) if songs else None
return '\n'.join(
[show_song(song, uri_length=uri_length, brief=True) for song in songs])
def remove(self, song_uri):
# FIXME: a little bit tricky
for song in self.playlist.list():
if get_url(song) == song_uri:
self.playlist.remove(song)
break
