# -*- coding: utf-8 -*- # vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4 ############################################################################### # OpenLP - Open Source Lyrics Projection # # --------------------------------------------------------------------------- # # Copyright (c) 2008-2011 Raoul Snyman # # Portions copyright (c) 2008-2011 Tim Bentley, Gerald Britton, Jonathan # # Corwin, Michael Gorven, Scott Guerrieri, Matthias Hub, Meinert Jordan, # # Armin Köhler, Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias # # Põldaru, Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, # # Maikel Stuivenberg, Martin Thompson, Jon Tibble, Frode Woldsund # # --------------------------------------------------------------------------- # # This program is free software; you can redistribute it and/or modify it # # under the terms of the GNU General Public License as published by the Free # # Software Foundation; version 2 of the License. # # # # This program is distributed in the hope that it will be useful, but WITHOUT # # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for # # more details. # # # # You should have received a copy of the GNU General Public License along # # with this program; if not, write to the Free Software Foundation, Inc., 59 # # Temple Place, Suite 330, Boston, MA 02111-1307 USA # ############################################################################### """ The :mod:`maindisplay` module provides the functionality to display screens and play multimedia within OpenLP. """ import logging import os from PyQt4 import QtCore, QtGui, QtWebKit from PyQt4.phonon import Phonon from openlp.core.lib import Receiver, build_html, ServiceItem, image_to_byte, \ translate from openlp.core.ui import HideMode, ScreenList log = logging.getLogger(__name__) #http://www.steveheffernan.com/html5-video-player/demo-video-player.html #http://html5demos.com/two-videos class MainDisplay(QtGui.QGraphicsView): """ This is the display screen. """ def __init__(self, parent, imageManager, live): if live: QtGui.QGraphicsView.__init__(self) # Do not overwrite the parent() method. self.parent = lambda: parent else: QtGui.QGraphicsView.__init__(self, parent) self.isLive = live self.imageManager = imageManager self.screens = ScreenList.get_instance() self.alertTab = None self.hideMode = None self.videoHide = False self.override = {} self.retranslateUi() self.mediaObject = None if live: self.audioPlayer = AudioPlayer(self) else: self.audioPlayer = None self.firstTime = True self.setStyleSheet(u'border: 0px; margin: 0px; padding: 0px;') self.setWindowFlags(QtCore.Qt.FramelessWindowHint | QtCore.Qt.Tool | QtCore.Qt.WindowStaysOnTopHint | QtCore.Qt.X11BypassWindowManagerHint) self.setAttribute(QtCore.Qt.WA_DeleteOnClose) if self.isLive: QtCore.QObject.connect(Receiver.get_receiver(), QtCore.SIGNAL(u'maindisplay_hide'), self.hideDisplay) QtCore.QObject.connect(Receiver.get_receiver(), QtCore.SIGNAL(u'maindisplay_show'), self.showDisplay) QtCore.QObject.connect(Receiver.get_receiver(), QtCore.SIGNAL(u'openlp_phonon_creation'), self.createMediaObject) def retranslateUi(self): """ Setup the interface translation strings. """ self.setWindowTitle(translate('OpenLP.MainDisplay', 'OpenLP Display')) def setup(self): """ Set up and build the output screen """ log.debug(u'Start MainDisplay setup (live = %s)' % self.isLive) self.usePhonon = QtCore.QSettings().value( u'media/use phonon', QtCore.QVariant(True)).toBool() self.phononActive = False self.screen = self.screens.current self.setVisible(False) self.setGeometry(self.screen[u'size']) self.videoWidget = Phonon.VideoWidget(self) self.videoWidget.setVisible(False) self.videoWidget.setGeometry(QtCore.QRect(0, 0, self.screen[u'size'].width(), self.screen[u'size'].height())) if self.isLive: if not self.firstTime: self.createMediaObject() log.debug(u'Setup webView') self.webView = QtWebKit.QWebView(self) self.webView.setGeometry(0, 0, self.screen[u'size'].width(), self.screen[u'size'].height()) self.page = self.webView.page() self.frame = self.page.mainFrame() QtCore.QObject.connect(self.webView, QtCore.SIGNAL(u'loadFinished(bool)'), self.isWebLoaded) self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff) self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff) self.frame.setScrollBarPolicy(QtCore.Qt.Vertical, QtCore.Qt.ScrollBarAlwaysOff) self.frame.setScrollBarPolicy(QtCore.Qt.Horizontal, QtCore.Qt.ScrollBarAlwaysOff) if self.isLive: # Build the initial frame. image_file = QtCore.QSettings().value(u'advanced/default image', QtCore.QVariant(u':/graphics/openlp-splash-screen.png'))\ .toString() background_color = QtGui.QColor() background_color.setNamedColor(QtCore.QSettings().value( u'advanced/default color', QtCore.QVariant(u'#ffffff')).toString()) if not background_color.isValid(): background_color = QtCore.Qt.white splash_image = QtGui.QImage(image_file) self.initialFrame = QtGui.QImage( self.screen[u'size'].width(), self.screen[u'size'].height(), QtGui.QImage.Format_ARGB32_Premultiplied) painter_image = QtGui.QPainter() painter_image.begin(self.initialFrame) painter_image.fillRect(self.initialFrame.rect(), background_color) painter_image.drawImage( (self.screen[u'size'].width() - splash_image.width()) / 2, (self.screen[u'size'].height() - splash_image.height()) / 2, splash_image) serviceItem = ServiceItem() serviceItem.bg_image_bytes = image_to_byte(self.initialFrame) self.webView.setHtml(build_html(serviceItem, self.screen, self.alertTab, self.isLive, None)) self.__hideMouse() # To display or not to display? if not self.screen[u'primary']: self.primary = False else: self.primary = True log.debug(u'Finished MainDisplay setup') def createMediaObject(self): self.firstTime = False log.debug(u'Creating Phonon objects - Start for %s', self.isLive) self.mediaObject = Phonon.MediaObject(self) self.audio = Phonon.AudioOutput(Phonon.VideoCategory, self.mediaObject) Phonon.createPath(self.mediaObject, self.videoWidget) Phonon.createPath(self.mediaObject, self.audio) QtCore.QObject.connect(self.mediaObject, QtCore.SIGNAL(u'stateChanged(Phonon::State, Phonon::State)'), self.videoState) QtCore.QObject.connect(self.mediaObject, QtCore.SIGNAL(u'finished()'), self.videoFinished) QtCore.QObject.connect(self.mediaObject, QtCore.SIGNAL(u'tick(qint64)'), self.videoTick) log.debug(u'Creating Phonon objects - Finished for %s', self.isLive) def text(self, slide): """ Add the slide text from slideController ``slide`` The slide text to be displayed """ log.debug(u'text to display') # Wait for the webview to update before displaying text. while not self.webLoaded: Receiver.send_message(u'openlp_process_events') self.setGeometry(self.screen[u'size']) self.frame.evaluateJavaScript(u'show_text("%s")' % slide.replace(u'\\', u'\\\\').replace(u'\"', u'\\\"')) def alert(self, text): """ Display an alert. ``text`` The text to be displayed. """ log.debug(u'alert to display') if self.height() != self.screen[u'size'].height() or not \ self.isVisible() or self.videoWidget.isVisible(): shrink = True js = u'show_alert("%s", "%s")' % ( text.replace(u'\\', u'\\\\').replace(u'\"', u'\\\"'), u'top') else: shrink = False js = u'show_alert("%s", "")' % ( text.replace(u'\\', u'\\\\').replace(u'\"', u'\\\"')) height = self.frame.evaluateJavaScript(js) if shrink: if self.phononActive: shrinkItem = self.webView else: shrinkItem = self if text: alert_height = int(height.toString()) shrinkItem.resize(self.width(), alert_height) shrinkItem.setVisible(True) if self.alertTab.location == 1: shrinkItem.move(self.screen[u'size'].left(), (self.screen[u'size'].height() - alert_height) / 2) elif self.alertTab.location == 2: shrinkItem.move(self.screen[u'size'].left(), self.screen[u'size'].height() - alert_height) else: shrinkItem.setVisible(False) self.setGeometry(self.screen[u'size']) def directImage(self, name, path, background): """ API for replacement backgrounds so Images are added directly to cache. """ self.imageManager.add_image(name, path, u'image', background) if hasattr(self, u'serviceItem'): self.override[u'image'] = name self.override[u'theme'] = self.serviceItem.themedata.theme_name self.image(name) # Update the preview frame. if self.isLive: self.parent().updatePreview() return True return False def image(self, name): """ Add an image as the background. The image has already been added to the cache. ``Image`` The name of the image to be displayed. """ log.debug(u'image to display') image = self.imageManager.get_image_bytes(name) self.resetVideo() self.displayImage(image) def displayImage(self, image): """ Display an image, as is. """ self.setGeometry(self.screen[u'size']) if image: js = u'show_image("data:image/png;base64,%s");' % image else: js = u'show_image("");' self.frame.evaluateJavaScript(js) def resetImage(self): """ Reset the backgound image to the service item image. Used after the image plugin has changed the background. """ log.debug(u'resetImage') if hasattr(self, u'serviceItem'): self.displayImage(self.serviceItem.bg_image_bytes) else: self.displayImage(None) # clear the cache self.override = {} def resetVideo(self): """ Used after Video plugin has changed the background """ log.debug(u'resetVideo') if self.phononActive: self.mediaObject.stop() self.mediaObject.clearQueue() self.webView.setVisible(True) self.videoWidget.setVisible(False) self.phononActive = False else: self.frame.evaluateJavaScript(u'show_video("close");') self.override = {} def videoPlay(self): """ Responds to the request to play a loaded video """ log.debug(u'videoPlay') if self.phononActive: self.mediaObject.play() else: self.frame.evaluateJavaScript(u'show_video("play");') # show screen if self.isLive: self.setVisible(True) def videoPause(self): """ Responds to the request to pause a loaded video """ log.debug(u'videoPause') if self.phononActive: self.mediaObject.pause() else: self.frame.evaluateJavaScript(u'show_video("pause");') def videoStop(self): """ Responds to the request to stop a loaded video """ log.debug(u'videoStop') if self.phononActive: self.mediaObject.stop() else: self.frame.evaluateJavaScript(u'show_video("stop");') def videoVolume(self, volume): """ Changes the volume of a running video """ log.debug(u'videoVolume %d' % volume) vol = float(volume) / float(10) if self.phononActive: self.audio.setVolume(vol) else: self.frame.evaluateJavaScript(u'show_video(null, null, %s);' % str(vol)) def video(self, videoPath, volume, isBackground=False): """ Loads and starts a video to run with the option of sound """ # We request a background video but have no service Item if isBackground and not hasattr(self, u'serviceItem'): return False if not self.mediaObject: self.createMediaObject() log.debug(u'video') self.webLoaded = True self.setGeometry(self.screen[u'size']) # We are running a background theme self.override[u'theme'] = u'' self.override[u'video'] = True vol = float(volume) / float(10) if isBackground or not self.usePhonon: js = u'show_video("init", "%s", %s, true); show_video("play");' % \ (videoPath.replace(u'\\', u'\\\\'), str(vol)) self.frame.evaluateJavaScript(js) else: self.phononActive = True self.mediaObject.stop() self.mediaObject.clearQueue() self.mediaObject.setCurrentSource(Phonon.MediaSource(videoPath)) # Need the timer to trigger set the trigger to 200ms # Value taken from web documentation. if self.serviceItem.end_time != 0: self.mediaObject.setTickInterval(200) self.mediaObject.play() self.webView.setVisible(False) self.videoWidget.setVisible(True) self.audio.setVolume(vol) return True def videoState(self, newState, oldState): """ Start the video at a predetermined point. """ if newState == Phonon.PlayingState \ and oldState != Phonon.PausedState \ and self.serviceItem.start_time > 0: # set start time in milliseconds self.mediaObject.seek(self.serviceItem.start_time * 1000) def videoFinished(self): """ Blank the Video when it has finished so the final frame is not left hanging """ self.videoStop() self.hideDisplay(HideMode.Blank) self.phononActive = False self.videoHide = True def videoTick(self, tick): """ Triggered on video tick every 200 milli seconds """ if tick > self.serviceItem.end_time * 1000: self.videoFinished() def isWebLoaded(self): """ Called by webView event to show display is fully loaded """ log.debug(u'Webloaded') self.webLoaded = True def preview(self): """ Generates a preview of the image displayed. """ log.debug(u'preview for %s', self.isLive) Receiver.send_message(u'openlp_process_events') # We must have a service item to preview if self.isLive and hasattr(self, u'serviceItem'): # Wait for the fade to finish before geting the preview. # Important otherwise preview will have incorrect text if at all! if self.serviceItem.themedata and \ self.serviceItem.themedata.display_slide_transition: while self.frame.evaluateJavaScript(u'show_text_complete()') \ .toString() == u'false': Receiver.send_message(u'openlp_process_events') # Wait for the webview to update before geting the preview. # Important otherwise first preview will miss the background ! while not self.webLoaded: Receiver.send_message(u'openlp_process_events') # if was hidden keep it hidden if self.isLive: if self.hideMode: self.hideDisplay(self.hideMode) else: # Single screen active if self.screens.display_count == 1: # Only make visible if setting enabled if QtCore.QSettings().value(u'general/display on monitor', QtCore.QVariant(True)).toBool(): self.setVisible(True) else: self.setVisible(True) preview = QtGui.QPixmap(self.screen[u'size'].width(), self.screen[u'size'].height()) painter = QtGui.QPainter(preview) painter.setRenderHint(QtGui.QPainter.Antialiasing) self.frame.render(painter) painter.end() return preview def buildHtml(self, serviceItem, image=None): """ Store the serviceItem and build the new HTML from it. Add the HTML to the display """ log.debug(u'buildHtml') self.webLoaded = False self.initialFrame = None self.serviceItem = serviceItem background = None # We have an image override so keep the image till the theme changes if self.override: # We have an video override so allow it to be stopped if u'video' in self.override: Receiver.send_message(u'video_background_replaced') self.override = {} # We have a different theme. elif self.override[u'theme'] != serviceItem.themedata.theme_name: Receiver.send_message(u'live_theme_changed') self.override = {} else: # replace the background background = self.imageManager. \ get_image_bytes(self.override[u'image']) if self.serviceItem.themedata.background_filename: self.serviceItem.bg_image_bytes = self.imageManager. \ get_image_bytes(self.serviceItem.themedata.theme_name) if image: image_bytes = self.imageManager.get_image_bytes(image) else: image_bytes = None html = build_html(self.serviceItem, self.screen, self.alertTab, self.isLive, background, image_bytes) log.debug(u'buildHtml - pre setHtml') self.webView.setHtml(html) log.debug(u'buildHtml - post setHtml') if serviceItem.foot_text: self.footer(serviceItem.foot_text) # if was hidden keep it hidden if self.hideMode and self.isLive: if QtCore.QSettings().value(u'general/auto unblank', QtCore.QVariant(False)).toBool(): Receiver.send_message(u'slidecontroller_live_unblank') else: self.hideDisplay(self.hideMode) # display hidden for video end we have a new item so must be shown if self.videoHide and self.isLive: self.videoHide = False self.showDisplay() self.__hideMouse() def footer(self, text): """ Display the Footer """ log.debug(u'footer') js = u'show_footer(\'' + \ text.replace(u'\\', u'\\\\').replace(u'\'', u'\\\'') + u'\')' self.frame.evaluateJavaScript(js) def hideDisplay(self, mode=HideMode.Screen): """ Hide the display by making all layers transparent Store the images so they can be replaced when required """ log.debug(u'hideDisplay mode = %d', mode) if self.phononActive: self.videoPause() if mode == HideMode.Screen: self.frame.evaluateJavaScript(u'show_blank("desktop");') self.setVisible(False) elif mode == HideMode.Blank or self.initialFrame: self.frame.evaluateJavaScript(u'show_blank("black");') else: self.frame.evaluateJavaScript(u'show_blank("theme");') if mode != HideMode.Screen: if self.isHidden(): self.setVisible(True) if self.phononActive: self.webView.setVisible(True) self.hideMode = mode def showDisplay(self): """ Show the stored layers so the screen reappears as it was originally. Make the stored images None to release memory. """ log.debug(u'showDisplay') self.frame.evaluateJavaScript('show_blank("show");') if self.isHidden(): self.setVisible(True) if self.phononActive: self.webView.setVisible(False) self.videoPlay() self.hideMode = None # Trigger actions when display is active again if self.isLive: Receiver.send_message(u'maindisplay_active') def __hideMouse(self): # Hide mouse cursor when moved over display if enabled in settings if QtCore.QSettings().value(u'advanced/hide mouse', QtCore.QVariant(False)).toBool(): self.setCursor(QtCore.Qt.BlankCursor) self.frame.evaluateJavaScript('document.body.style.cursor = "none"') else: self.setCursor(QtCore.Qt.ArrowCursor) self.frame.evaluateJavaScript('document.body.style.cursor = "auto"') class AudioPlayer(QtCore.QObject): """ This Class will play audio only allowing components to work with a soundtrack independent of the user interface. """ log.info(u'AudioPlayer Loaded') def __init__(self, parent): """ The constructor for the display form. ``parent`` The parent widget. """ log.debug(u'AudioPlayer Initialisation started') QtCore.QObject.__init__(self, parent) self.currentIndex = -1 self.playlist = [] self.mediaObject = Phonon.MediaObject() self.audioObject = Phonon.AudioOutput(Phonon.VideoCategory) Phonon.createPath(self.mediaObject, self.audioObject) QtCore.QObject.connect(self.mediaObject, QtCore.SIGNAL(u'aboutToFinish()'), self.onAboutToFinish) def __del__(self): """ Shutting down so clean up connections """ self.stop() for path in self.mediaObject.outputPaths(): path.disconnect() def onAboutToFinish(self): """ Just before the audio player finishes the current track, queue the next item in the playlist, if there is one. """ self.currentIndex += 1 if len(self.playlist) > self.currentIndex: self.mediaObject.enqueue(self.playlist[self.currentIndex]) def connectVolumeSlider(self, slider): slider.setAudioOutput(self.audioObject) def reset(self): """ Reset the audio player, clearing the playlist and the queue. """ self.currentIndex = -1 self.playlist = [] self.stop() self.mediaObject.clear() def play(self): """ We want to play the file so start it """ log.debug(u'AudioPlayer.play() called') if self.currentIndex == -1: self.onAboutToFinish() self.mediaObject.play() def pause(self): """ Pause the Audio """ log.debug(u'AudioPlayer.pause() called') self.mediaObject.pause() def stop(self): """ Stop the Audio and clean up """ log.debug(u'AudioPlayer.stop() called') self.mediaObject.stop() def addToPlaylist(self, filenames): """ Add another file to the playlist. ``filename`` The file to add to the playlist. """ if not isinstance(filenames, list): filenames = [filenames] for filename in filenames: self.playlist.append(Phonon.MediaSource(filename))