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April 4, 2012 21:26
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#!/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, | |
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
## 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_()) |
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