from PyQt5.QtCore import Qt from PyQt5.Qt import QFont from PyQt5.QtGui import QColor, QDropEvent from PyQt5.QtWidgets import ( QTableWidget, QAbstractItemView, QTableWidgetItem, QWidget, QHBoxLayout, QApplication ) import helpers from config import Config from log import DEBUG, ERROR from model import Playdates, Playlists, Settings, Tracks class Playlist(QTableWidget): # Column names COL_INDEX = 0 COL_MSS = 1 COL_TITLE = 2 COL_ARTIST = 3 COL_DURATION = 4 COL_ENDTIME = 5 COL_PATH = 6 def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.setDragEnabled(True) self.setAcceptDrops(True) self.viewport().setAcceptDrops(True) self.setDragDropOverwriteMode(False) self.setDropIndicatorShown(True) self.setSelectionMode(QAbstractItemView.ExtendedSelection) self.setSelectionBehavior(QAbstractItemView.SelectRows) self.setDragDropMode(QAbstractItemView.InternalMove) self.current_track = None self.next_track = None self.previous_track_path = None self.previous_track_position = None self.played_tracks = [] # Column widths from settings for column in range(self.columnCount()): name = f"playlist_col_{str(column)}_width" record = Settings.get_int(name) if record.f_int is not None: self.setColumnWidth(column, record.f_int) # How to put in non-track entries for later # row = self.rowCount() # self.insertRow(row) # item = QTableWidgetItem("to be spanned") # self.setItem(row, 1, item) # self.setSpan(row, 1, 1, 3) # colour = QColor(125, 75, 25) # self.set_row_colour(row, colour) def __del__(self): "Save column widths" for column in range(self.columnCount()): name = f"playlist_col_{str(column)}_width" record = Settings.get_int(name) if record.f_int != self.columnWidth(column): record.update({'f_int': self.columnWidth(column)}) def add_to_playlist(self, track): """ Add track to playlist track is an instance of Track """ DEBUG(f"add_to_playlist: track.id={track.id}") row = self.rowCount() self.insertRow(row) DEBUG(f"Adding to row {row}") item = QTableWidgetItem(str(track.id)) self.setItem(row, self.COL_INDEX, item) item = QTableWidgetItem(str(track.start_gap)) self.setItem(row, self.COL_MSS, item) item = QTableWidgetItem(track.title) self.setItem(row, self.COL_TITLE, item) item = QTableWidgetItem(track.artist) self.setItem(row, self.COL_ARTIST, item) item = QTableWidgetItem(helpers.ms_to_mmss(track.duration)) self.setItem(row, self.COL_DURATION, item) item = QTableWidgetItem(track.path) self.setItem(row, self.COL_PATH, item) def drop_on(self, event): index = self.indexAt(event.pos()) if not index.isValid(): return self.rowCount() return (index.row() + 1 if self.is_below(event.pos(), index) else index.row()) def dropEvent(self, event: QDropEvent): if not event.isAccepted() and event.source() == self: drop_row = self.drop_on(event) rows = sorted(set(item.row() for item in self.selectedItems())) rows_to_move = [ [QTableWidgetItem(self.item(row_index, column_index)) for column_index in range(self.columnCount())] for row_index in rows ] for row_index in reversed(rows): self.removeRow(row_index) if row_index < drop_row: drop_row -= 1 for row_index, data in enumerate(rows_to_move): row_index += drop_row self.insertRow(row_index) for column_index, column_data in enumerate(data): self.setItem(row_index, column_index, column_data) event.accept() for row_index in range(len(rows_to_move)): for column_index in range(self.columnCount()): self.item(drop_row + row_index, column_index).setSelected(True) super().dropEvent(event) DEBUG(f"Moved row(s) {rows} to become row {drop_row}") self.clearSelection() self.update_playlist_colours() def fade(self): self.music.fade() def get_current_artist(self): try: return self.current_track.artist except AttributeError: return "" def get_current_duration(self): try: return self.current_track.duration except AttributeError: return 0 def get_current_fade_at(self): try: return self.current_track.fade_at except AttributeError: return 0 def get_current_playtime(self): return self.music.get_playtime() def get_current_silence_at(self): try: return self.current_track.silence_at except AttributeError: return 0 def get_current_title(self): try: return self.current_track.title except AttributeError: return "" def get_next_artist(self): try: return self.next_track.artist except AttributeError: return "" def get_next_title(self): try: return self.next_track.title except AttributeError: return "" def get_next_track_id(self): try: return self.next_track.id except AttributeError: return 0 def get_previous_artist(self): try: return self.previous_track.artist except AttributeError: return "" def get_previous_title(self): try: return self.previous_track.title except AttributeError: return "" def is_below(self, pos, index): rect = self.visualRect(index) margin = 2 if pos.y() - rect.top() < margin: return False elif rect.bottom() - pos.y() < margin: return True # noinspection PyTypeChecker return ( rect.contains(pos, True) and not (int(self.model().flags(index)) & Qt.ItemIsDropEnabled) and pos.y() >= rect.center().y() # noqa W503 ) def load_playlist(self, name): """ Load tracks from named playlist. Set first track as next track to play. Return True if successful else False. """ for track in Playlists.get_playlist_by_name(name).get_tracks(): self.add_to_playlist(track) # Set the first playable track as next to play for row in range(self.rowCount()): if self.set_row_as_next_track(row): self.meta_set_next(row) return True self.update_playlist_colours() return False def meta_clear(self, row): "Clear metad ata for row" self.meta_set(row, None) def meta_find(self, metadata, one=True): """ Search rows for metadata. If one is True, check that only one row matches and return the row number. If one is False, return a list of matching row numbers. """ matches = [] for row in range(self.rowCount()): if self.meta_get(row) == metadata: matches.append(row) if not one: return matches if len(matches) == 0: return None elif len(matches) == 1: return matches[0] else: ERROR( f"Multiple matches for metadata '{metadata}' found " f"in rows: {', '.join([str(x) for x in matches])}" ) raise AttributeError(f"Multiple '{metadata}' metadata {matches}") def meta_get(self, row): "Return row metadata" return self.item(row, self.COL_INDEX).data(Qt.UserRole) def meta_get_current(self): "Return row marked as current, or None" return self.meta_find("current") def meta_get_next(self): "Return row marked as next, or None" return self.meta_find("next") def meta_get_notes(self): "Return rows marked as notes, or None" return self.meta_find("note", one=False) def meta_set_current(self, row): "Mark row as current track" self.meta_set(row, "current") def meta_set_next(self, row): "Mark row as next track" self.meta_set(row, "next") def meta_set_note(self, row): "Mark row as note" self.meta_set(row, "note") def meta_set(self, row, metadata): "Set row metadata" self.item(row, self.COL_INDEX).setData(Qt.UserRole, metadata) def play_next(self): """ Play next track. If there is no next track set, return. If there's currently a track playing, fade it. Move next track to current track. Play (new) current. Update playlist "current track" metadata Cue up next track in playlist if there is one. Update playlist "next track" metadata Tell database to record it as played Remember it was played for this session Update playlist appearance. """ # If there is no next track set, return. if not self.next_track: return # If there's currently a track playing, fade it. if self.music.playing(): path, position = self.music.fade() self.previous_track_path = path self.previous_track_position = position # Move next track to current track. self.current_track = self.next_track # Play (new) current. self.music.play(self.current_track.path) # Update playlist "current track" metadata old_current = self.meta_get_current() if old_current is not None: self.meta_clear(old_current) current = self.meta_get_next() if current is not None: self.meta_set_current(current) # Cue up next track in playlist if there is one. track_id = 0 next_row = 0 if current is not None: start = current + 1 else: start = 0 for row in range(start, self.rowCount()): if self.item(row, self.COL_INDEX): if int(self.item(row, self.COL_INDEX).text()) > 0: track_id = int(self.item(row, self.COL_INDEX).text()) next_row = row break if track_id: self.next_track = Tracks.get_track(track_id) # Update playlist "next track" metadata if next_row: self.meta_set_next(next_row) # Tell database to record it as played self.current_track.update_lastplayed() Playdates.add_playdate(self.current_track) # Remember it was played for this session self.played_tracks.append(self.current_track.id) # Update playlist appearance. self.update_playlist_colours() def set_next_track(self): """ Sets the selected track as the next track. """ # TODO pass # if self.selectionModel().hasSelection(): # self.set_next_track_row(self.playlist.currentRow()) # if self.selectionModel().hasSelection(): # row = self.currentRow() # track_id = int(self.item(row, 0).text()) # DEBUG(f"play_selected: track_id={track_id}") # # TODO: get_path may raise exception # music.play_track(track_id) # track = Tracks.get_track(id) # if not track: # ERROR(f"set_next_track({id}): can't find track") # return None # # self.next_track['player'] = vlc.MediaPlayer(track.path) # self.next_track = track # return track.id def set_row_as_next_track(self, row): """ If passed row is track row, indicated by having a track_id in the COL_INDEX column, set that track as the next track to be played and return True. Otherwise return False. """ if self.item(row, self.COL_INDEX): track_id = int(self.item(row, self.COL_INDEX).text()) DEBUG(f"set_row_as_next_track: track_id={track_id}") self.next_track = Tracks.get_track(track_id) # Mark row as next track self.meta_set_next(row) return True return False def update_playlist_colours(self): "Set row colours, fonts, etc" self.clearSelection() current = self.meta_get_current() next = self.meta_get_next() notes = self.meta_get_notes() for row in range(self.rowCount()): if row == current: self.set_row_colour( row, QColor(Config.COLOUR_CURRENT_PLAYLIST) ) self.set_row_bold(row) elif row == next: self.set_row_colour( row, QColor(Config.COLOUR_NEXT_PLAYLIST) ) self.set_row_bold(row) elif row in notes: self.set_row_colour( row, QColor(Config.COLOUR_NOTES_PLAYLIST) ) self.set_row_bold(row) else: if row % 2: colour = QColor(Config.COLOUR_ODD_PLAYLIST) else: colour = QColor(Config.COLOUR_EVEN_PLAYLIST) self.set_row_colour(row, colour) if self.item(row, self.COL_INDEX): if int(self.item(row, self.COL_INDEX).text()) > 0: track_id = int(self.item(row, self.COL_INDEX).text()) if track_id in self.played_tracks: self.set_row_not_bold(row) else: self.set_row_bold(row) def set_row_bold(self, row): bold = QFont() bold.setBold(True) for j in range(self.columnCount()): if self.item(row, j): self.item(row, j).setFont(bold) def set_row_colour(self, row, colour): for j in range(self.columnCount()): if self.item(row, j): self.item(row, j).setBackground(colour) def set_row_not_bold(self, row): normal = QFont() normal.setBold(False) for j in range(self.columnCount()): if self.item(row, j): self.item(row, j).setFont(normal) class Window(QWidget): def __init__(self): super(Window, self).__init__() layout = QHBoxLayout() self.setLayout(layout) self.table_widget = Playlist() layout.addWidget(self.table_widget) # setup table widget self.table_widget.setColumnCount(2) self.table_widget.setHorizontalHeaderLabels(['Type', 'Name']) items = [('Red', 'Toyota'), ('Blue', 'RV'), ('Green', 'Beetle'), ('Silver', 'Chevy'), ('Black', 'BMW')] self.table_widget.setRowCount(len(items)) for i, (color, model) in enumerate(items): self.table_widget.setItem(i, 0, QTableWidgetItem(color)) self.table_widget.setItem(i, 1, QTableWidgetItem(model)) self.resize(400, 400) self.show() if __name__ == '__main__': import sys app = QApplication(sys.argv) window = Window() sys.exit(app.exec_())