#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2010 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
## the names of its contributors may be used to endorse or promote
## products derived from this software without specific prior written
## permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
## $QT_END_LICENSE$
##
#############################################################################
# This is only needed for Python v2 but is harmless for Python v3.
import sip
sip.setapi('QString', 2)
import sys
from PyQt4 import QtCore, QtGui
try:
from PyQt4.phonon import Phonon
except ImportError:
app = QtGui.QApplication(sys.argv)
QtGui.QMessageBox.critical(None, "Music Player",
"Your Qt installation does not have Phonon support.",
QtGui.QMessageBox.Ok | QtGui.QMessageBox.Default,
QtGui.QMessageBox.NoButton)
sys.exit(1)
class MainWindow(QtGui.QMainWindow):
def __init__(self):
super(QtGui.QMainWindow, self).__init__()
self.audioOutput = Phonon.AudioOutput(Phonon.MusicCategory, self)
self.mediaObject = Phonon.MediaObject(self)
self.metaInformationResolver = Phonon.MediaObject(self)
self.mediaObject.setTickInterval(1000)
self.mediaObject.tick.connect(self.tick)
self.mediaObject.stateChanged.connect(self.stateChanged)
self.metaInformationResolver.stateChanged.connect(self.metaStateChanged)
self.mediaObject.currentSourceChanged.connect(self.sourceChanged)
self.mediaObject.aboutToFinish.connect(self.aboutToFinish)
Phonon.createPath(self.mediaObject, self.audioOutput)
self.setupActions()
self.setupMenus()
self.setupUi()
self.timeLcd.display("00:00")
self.sources = []
def sizeHint(self):
return QtCore.QSize(500, 300)
def addFiles(self):
files = QtGui.QFileDialog.getOpenFileNames(self, "Select Music Files",
QtGui.QDesktopServices.storageLocation(QtGui.QDesktopServices.MusicLocation))
if not files:
return
index = len(self.sources)
for string in files:
self.sources.append(Phonon.MediaSource(string))
if self.sources:
self.metaInformationResolver.setCurrentSource(self.sources[index])
def about(self):
QtGui.QMessageBox.information(self, "About Music Player",
"The Music Player example shows how to use Phonon - the "
"multimedia framework that comes with Qt - to create a "
"simple music player.")
def stateChanged(self, newState, oldState):
if newState == Phonon.ErrorState:
if self.mediaObject.errorType() == Phonon.FatalError:
QtGui.QMessageBox.warning(self, "Fatal Error",
self.mediaObject.errorString())
else:
QtGui.QMessageBox.warning(self, "Error",
self.mediaObject.errorString())
elif newState == Phonon.PlayingState:
self.playAction.setEnabled(False)
self.pauseAction.setEnabled(True)
self.stopAction.setEnabled(True)
elif newState == Phonon.StoppedState:
self.stopAction.setEnabled(False)
self.playAction.setEnabled(True)
self.pauseAction.setEnabled(False)
self.timeLcd.display("00:00")
elif newState == Phonon.PausedState:
self.pauseAction.setEnabled(False)
self.stopAction.setEnabled(True)
self.playAction.setEnabled(True)
def tick(self, time):
displayTime = QtCore.QTime(0, (time / 60000) % 60, (time / 1000) % 60)
self.timeLcd.display(displayTime.toString('mm:ss'))
def tableClicked(self, row, column):
wasPlaying = (self.mediaObject.state() == Phonon.PlayingState)
self.mediaObject.stop()
self.mediaObject.clearQueue()
self.mediaObject.setCurrentSource(self.sources[row])
if wasPlaying:
self.mediaObject.play()
else:
self.mediaObject.stop()
def sourceChanged(self, source):
self.musicTable.selectRow(self.sources.index(source))
self.timeLcd.display('00:00')
def metaStateChanged(self, newState, oldState):
if newState == Phonon.ErrorState:
QtGui.QMessageBox.warning(self, "Error opening files",
self.metaInformationResolver.errorString())
while self.sources and self.sources.pop() != self.metaInformationResolver.currentSource():
pass
return
if newState != Phonon.StoppedState and newState != Phonon.PausedState:
return
if self.metaInformationResolver.currentSource().type() == Phonon.MediaSource.Invalid:
return
metaData = self.metaInformationResolver.metaData()
title = metaData.get('TITLE', [''])[0]
if not title:
title = self.metaInformationResolver.currentSource().fileName()
titleItem = QtGui.QTableWidgetItem(title)
titleItem.setFlags(titleItem.flags() ^ QtCore.Qt.ItemIsEditable)
artist = metaData.get('ARTIST', [''])[0]
artistItem = QtGui.QTableWidgetItem(artist)
artistItem.setFlags(artistItem.flags() ^ QtCore.Qt.ItemIsEditable)
album = metaData.get('ALBUM', [''])[0]
albumItem = QtGui.QTableWidgetItem(album)
albumItem.setFlags(albumItem.flags() ^ QtCore.Qt.ItemIsEditable)
year = metaData.get('DATE', [''])[0]
yearItem = QtGui.QTableWidgetItem(year)
yearItem.setFlags(yearItem.flags() ^ QtCore.Qt.ItemIsEditable)
currentRow = self.musicTable.rowCount()
self.musicTable.insertRow(currentRow)
self.musicTable.setItem(currentRow, 0, titleItem)
self.musicTable.setItem(currentRow, 1, artistItem)
self.musicTable.setItem(currentRow, 2, albumItem)
self.musicTable.setItem(currentRow, 3, yearItem)
if not self.musicTable.selectedItems():
self.musicTable.selectRow(0)
self.mediaObject.setCurrentSource(self.metaInformationResolver.currentSource())
index = self.sources.index(self.metaInformationResolver.currentSource()) + 1
if len(self.sources) > index:
self.metaInformationResolver.setCurrentSource(self.sources[index])
else:
self.musicTable.resizeColumnsToContents()
if self.musicTable.columnWidth(0) > 300:
self.musicTable.setColumnWidth(0, 300)
def aboutToFinish(self):
index = self.sources.index(self.mediaObject.currentSource()) + 1
if len(self.sources) > index:
self.mediaObject.enqueue(self.sources[index])
def setupActions(self):
self.playAction = QtGui.QAction(
self.style().standardIcon(QtGui.QStyle.SP_MediaPlay), "Play",
self, shortcut="Ctrl+P", enabled=False,
triggered=self.mediaObject.play)
self.pauseAction = QtGui.QAction(
self.style().standardIcon(QtGui.QStyle.SP_MediaPause),
"Pause", self, shortcut="Ctrl+A", enabled=False,
triggered=self.mediaObject.pause)
self.stopAction = QtGui.QAction(
self.style().standardIcon(QtGui.QStyle.SP_MediaStop), "Stop",
self, shortcut="Ctrl+S", enabled=False,
triggered=self.mediaObject.stop)
self.nextAction = QtGui.QAction(
self.style().standardIcon(QtGui.QStyle.SP_MediaSkipForward),
"Next", self, shortcut="Ctrl+N")
self.previousAction = QtGui.QAction(
self.style().standardIcon(QtGui.QStyle.SP_MediaSkipBackward),
"Previous", self, shortcut="Ctrl+R")
self.addFilesAction = QtGui.QAction("Add &Files", self,
shortcut="Ctrl+F", triggered=self.addFiles)
self.exitAction = QtGui.QAction("E&xit", self, shortcut="Ctrl+X",
triggered=self.close)
self.aboutAction = QtGui.QAction("A&bout", self, shortcut="Ctrl+B",
triggered=self.about)
self.aboutQtAction = QtGui.QAction("About &Qt", self,
shortcut="Ctrl+Q", triggered=QtGui.qApp.aboutQt)
def setupMenus(self):
fileMenu = self.menuBar().addMenu("&File")
fileMenu.addAction(self.addFilesAction)
fileMenu.addSeparator()
fileMenu.addAction(self.exitAction)
aboutMenu = self.menuBar().addMenu("&Help")
aboutMenu.addAction(self.aboutAction)
aboutMenu.addAction(self.aboutQtAction)
def setupUi(self):
bar = QtGui.QToolBar()
bar.addAction(self.playAction)
bar.addAction(self.pauseAction)
bar.addAction(self.stopAction)
self.seekSlider = Phonon.SeekSlider(self)
self.seekSlider.setMediaObject(self.mediaObject)
self.volumeSlider = Phonon.VolumeSlider(self)
self.volumeSlider.setAudioOutput(self.audioOutput)
self.volumeSlider.setSizePolicy(QtGui.QSizePolicy.Maximum,
QtGui.QSizePolicy.Maximum)
volumeLabel = QtGui.QLabel()
volumeLabel.setPixmap(QtGui.QPixmap('images/volume.png'))
palette = QtGui.QPalette()
palette.setBrush(QtGui.QPalette.Light, QtCore.Qt.darkGray)
self.timeLcd = QtGui.QLCDNumber()
self.timeLcd.setPalette(palette)
headers = ("Title", "Artist", "Album", "Year")
self.musicTable = QtGui.QTableWidget(0, 4)
self.musicTable.setHorizontalHeaderLabels(headers)
self.musicTable.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
self.musicTable.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
self.musicTable.cellPressed.connect(self.tableClicked)
seekerLayout = QtGui.QHBoxLayout()
seekerLayout.addWidget(self.seekSlider)
seekerLayout.addWidget(self.timeLcd)
playbackLayout = QtGui.QHBoxLayout()
playbackLayout.addWidget(bar)
playbackLayout.addStretch()
playbackLayout.addWidget(volumeLabel)
playbackLayout.addWidget(self.volumeSlider)
mainLayout = QtGui.QVBoxLayout()
mainLayout.addWidget(self.musicTable)
mainLayout.addLayout(seekerLayout)
mainLayout.addLayout(playbackLayout)
widget = QtGui.QWidget()
widget.setLayout(mainLayout)
self.setCentralWidget(widget)
self.setWindowTitle("Phonon Music Player")
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
app.setApplicationName("Music Player")
app.setQuitOnLastWindowClosed(True)
window = MainWindow()
window.show()
sys.exit(app.exec_())
