예제 #1
0
파일: mainwindow.py 프로젝트: emdash/pitivi
    def _createUi(self, instance):
        """ Create the graphical interface """
        self.set_title("%s" % (APPNAME))
        self.connect("delete-event", self._deleteCb)
        self.connect("configure-event", self._configureCb)

        # main menu & toolbar
        vbox = gtk.VBox(False)
        self.add(vbox)
        vbox.show()
        self.menu = self.uimanager.get_widget("/MainMenuBar")
        vbox.pack_start(self.menu, expand=False)
        self.menu.show()
        self.toolbar = self.uimanager.get_widget("/MainToolBar")
        vbox.pack_start(self.toolbar, expand=False)
        self.toolbar.show()
        # timeline and project tabs
        vpaned = gtk.VPaned()
        vbox.pack_start(vpaned)
        vpaned.show()

        self.timeline = Timeline(instance, self.uimanager)
        self.timeline.project = self.project

        vpaned.pack2(self.timeline, resize=True, shrink=False)
        self.timeline.show()
        self.mainhpaned = gtk.HPaned()
        vpaned.pack1(self.mainhpaned, resize=True, shrink=False)

        self.secondhpaned = gtk.HPaned()
        self.mainhpaned.pack1(self.secondhpaned, resize=True, shrink=False)
        self.secondhpaned.show()
        self.mainhpaned.show()

        self.projecttabs = BaseTabs(instance)

        self.sourcelist = SourceList(instance, self.uimanager)
        self.projecttabs.append_page(self.sourcelist, gtk.Label(_("Media Library")))
        self._connectToSourceList()
        self.sourcelist.show()

        self.effectlist = EffectList(instance, self.uimanager)
        self.projecttabs.append_page(self.effectlist, gtk.Label(_("Effect Library")))
        self.effectlist.show()

        self.secondhpaned.pack1(self.projecttabs, resize=True, shrink=False)
        self.projecttabs.show()

        # Actions with key accelerators that will be made unsensitive while
        # a gtk entry box is used to avoid conflicts.
        self.sensitive_actions = []
        for action in self.timeline.playhead_actions:
            self.sensitive_actions.append(action[0])
        for action in self.toggleactions:
            self.sensitive_actions.append(action[0])

        #Clips properties
        self.propertiestabs = BaseTabs(instance, True)
        self.clipconfig = ClipProperties(instance, self.uimanager)
        self.clipconfig.project = self.project
        self.propertiestabs.append_page(self.clipconfig,
                                        gtk.Label(_("Effects configurations")))
        self.clipconfig.show()

        self.secondhpaned.pack2(self.propertiestabs, resize= True, shrink=False)
        self.propertiestabs.show()

        # Viewer
        self.viewer = PitiviViewer(instance, undock_action=self.undock_action)
        # drag and drop
        self.viewer.drag_dest_set(gtk.DEST_DEFAULT_DROP | gtk.DEST_DEFAULT_MOTION,
                           [dnd.FILESOURCE_TUPLE, dnd.URI_TUPLE],
                           gtk.gdk.ACTION_COPY)
        self.viewer.connect("drag_data_received", self._viewerDndDataReceivedCb)
        self.mainhpaned.pack2(self.viewer, resize=False, shrink=False)
        self.viewer.connect("expose-event", self._exposeEventCb)

        # window and pane position defaults
        self.mainhpaned = self.mainhpaned
        self.hpaned = self.secondhpaned
        self.vpaned = vpaned
        height = -1
        width = -1
        if self.settings.mainWindowHPanePosition:
            self.hpaned.set_position(self.settings.mainWindowHPanePosition)
        if self.settings.mainWindowMainHPanePosition:
            self.mainhpaned.set_position(self.settings.mainWindowMainHPanePosition)
        if self.settings.mainWindowVPanePosition:
            self.vpaned.set_position(self.settings.mainWindowVPanePosition)
        if self.settings.mainWindowWidth:
            width = self.settings.mainWindowWidth
        if self.settings.mainWindowHeight:
            height = self.settings.mainWindowHeight
        self.set_default_size(width, height)
        if height == -1 and width == -1:
            self.maximize()
        self._do_pending_fullscreen = False
        # FIXME: don't know why this doesn't work
        #if self.settings.mainWindowFullScreen:
        #    self._do_pending_fullscreen = True

        # timeline toolbar
        # FIXME: remove toolbar padding and shadow. In fullscreen mode, the
        # toolbar buttons should be clickable with the mouse cursor at the
        # very bottom of the screen.
        ttb = self.uimanager.get_widget("/TimelineToolBar")
        vbox.pack_start(ttb, expand=False)
        ttb.show()

        self.show()

        if not self.settings.mainWindowShowMainToolbar:
            self.toolbar.props.visible = False

        if not self.settings.mainWindowShowTimelineToolbar:
            ttb.props.visible = False

        #application icon
        self.set_icon_name("pitivi")

        #pulseaudio 'role' (http://0pointer.de/blog/projects/tagging-audio.htm
        os.environ["PULSE_PROP_media.role"] = "production"
        os.environ["PULSE_PROP_application.icon_name"] = "pitivi"
예제 #2
0
파일: mainwindow.py 프로젝트: qlf/Pitivi
    def _createUi(self, instance):
        """ Create the graphical interface """
        self.set_title("%s" % (APPNAME))
        self.connect("delete-event", self._deleteCb)
        self.connect("configure-event", self._configureCb)

        # main menu & toolbar
        vbox = gtk.VBox(False)
        self.add(vbox)
        vbox.show()
        self.menu = self.uimanager.get_widget("/MainMenuBar")
        vbox.pack_start(self.menu, expand=False)
        self.menu.show()
        self.toolbar = self.uimanager.get_widget("/MainToolBar")
        vbox.pack_start(self.toolbar, expand=False)
        self.toolbar.show()
        # timeline and project tabs
        vpaned = gtk.VPaned()
        vbox.pack_start(vpaned)
        vpaned.show()

        self.timeline = Timeline(instance, self.uimanager)
        self.timeline.project = self.project

        vpaned.pack2(self.timeline, resize=True, shrink=False)
        self.timeline.show()
        self.mainhpaned = gtk.HPaned()
        vpaned.pack1(self.mainhpaned, resize=True, shrink=False)

        self.secondhpaned = gtk.HPaned()
        self.mainhpaned.pack1(self.secondhpaned, resize=True, shrink=False)
        self.secondhpaned.show()
        self.mainhpaned.show()

        self.projecttabs = BaseTabs(instance)

        self.sourcelist = SourceList(instance, self.uimanager)
        self.projecttabs.append_page(self.sourcelist, gtk.Label(_("Media Library")))
        self._connectToSourceList()
        self.sourcelist.show()

        self.effectlist = EffectList(instance, self.uimanager)
        self.projecttabs.append_page(self.effectlist, gtk.Label(_("Effect Library")))
        self.effectlist.show()

        self.secondhpaned.pack1(self.projecttabs, resize=True, shrink=False)
        self.projecttabs.show()

        #Clips properties
        self.propertiestabs = BaseTabs(instance, True)
        self.clipconfig = ClipProperties(instance, self.uimanager)
        self.clipconfig.project = self.project
        self.propertiestabs.append_page(self.clipconfig,
                                        gtk.Label(_("Effects configurations")))
        self.clipconfig.show()

        self.secondhpaned.pack2(self.propertiestabs, resize= True, shrink=False)
        self.propertiestabs.show()

        # Viewer
        self.viewer = PitiviViewer()
        # drag and drop
        self.viewer.drag_dest_set(gtk.DEST_DEFAULT_DROP | gtk.DEST_DEFAULT_MOTION,
                           [dnd.FILESOURCE_TUPLE, dnd.URI_TUPLE],
                           gtk.gdk.ACTION_COPY)
        self.viewer.connect("drag_data_received", self._viewerDndDataReceivedCb)
        self.mainhpaned.pack2(self.viewer, resize=False, shrink=False)
        self.viewer.show()
        self.viewer.connect("expose-event", self._exposeEventCb)

        # window and pane position defaults
        self.mainhpaned = self.mainhpaned
        self.hpaned = self.secondhpaned
        self.vpaned = vpaned
        height = -1
        width = -1
        if self.settings.mainWindowHPanePosition:
            self.hpaned.set_position(self.settings.mainWindowHPanePosition)
        if self.settings.mainWindowMainHPanePosition:
            self.mainhpaned.set_position(self.settings.mainWindowMainHPanePosition)
        if self.settings.mainWindowVPanePosition:
            self.vpaned.set_position(self.settings.mainWindowVPanePosition)
        if self.settings.mainWindowWidth:
            width = self.settings.mainWindowWidth
        if self.settings.mainWindowHeight:
            height = self.settings.mainWindowHeight
        self.set_default_size(width, height)
        if height == -1 and width == -1:
            self.maximize()
        self._do_pending_fullscreen = False
        # FIXME: don't know why this doesn't work
        #if self.settings.mainWindowFullScreen:
        #    self._do_pending_fullscreen = True

        # timeline toolbar
        # FIXME: remove toolbar padding and shadow. In fullscreen mode, the
        # toolbar buttons should be clickable with the mouse cursor at the
        # very bottom of the screen.
        ttb = self.uimanager.get_widget("/TimelineToolBar")
        vbox.pack_start(ttb, expand=False)
        ttb.show()

        self.show()

        if not self.settings.mainWindowShowMainToolbar:
            self.toolbar.props.visible = False

        if not self.settings.mainWindowShowTimelineToolbar:
            ttb.props.visible = False

        #application icon
        self.set_icon_name("pitivi")

        #pulseaudio 'role' (http://0pointer.de/blog/projects/tagging-audio.htm
        os.environ["PULSE_PROP_media.role"] = "production"
        os.environ["PULSE_PROP_application.icon_name"] = "pitivi"
예제 #3
0
파일: mainwindow.py 프로젝트: emdash/pitivi
class PitiviMainWindow(gtk.Window, Loggable):
    """
    Pitivi's main window.

    @cvar app: The application object
    @type app: L{Application}
    @cvar project: The current project
    @type project: L{Project}
    """


    def __init__(self, instance):
        """ initialize with the Pitivi object """
        gtk.Window.__init__(self)
        Loggable.__init__(self)
        self.log("Creating MainWindow")
        self.actions = None
        self.toggleactions = None
        self.actiongroup = None
        self.settings = instance.settings
        self.is_fullscreen = self.settings.mainWindowFullScreen
        self.timelinepos = 0
        self.prefsdialog = None
        create_stock_icons()
        self._setActions(instance)
        self._createUi(instance)

        self.app = instance
        self._launchWizard()
        self.manager = RecentManager()
        self._zoom_duration_changed = False
        self._missingUriOnLoading = False

        self.app.projectManager.connect("new-project-loading",
                self._projectManagerNewProjectLoadingCb)
        self.app.projectManager.connect("new-project-loaded",
                self._projectManagerNewProjectLoadedCb)
        self.app.projectManager.connect("new-project-loaded",
                self._quitWizardCb)
        self.app.projectManager.connect("new-project-failed",
                self._projectManagerNewProjectFailedCb)
        self.app.projectManager.connect("save-project-failed",
                self._projectManagerSaveProjectFailedCb)
        self.app.projectManager.connect("project-saved",
                self._projectManagerProjectSavedCb)
        self.app.projectManager.connect("closing-project",
                self._projectManagerClosingProjectCb)
        self.app.projectManager.connect("reverting-to-saved",
                self._projectManagerRevertingToSavedCb)
        self.app.projectManager.connect("project-closed",
                self._projectManagerProjectClosedCb)
        self.app.projectManager.connect("missing-uri",
                self._projectManagerMissingUriCb)

        self.app.action_log.connect("commit", self._actionLogCommit)
        self.app.action_log.connect("undo", self._actionLogUndo)
        self.app.action_log.connect("redo", self._actionLogRedo)
        self.app.action_log.connect("cleaned", self._actionLogCleaned)

        # if no webcams available, hide the webcam action
        if self.app.deviceprobe is not None:
            # On Windows disable device probe
            if platform.system() != 'Windows':
                self.app.deviceprobe.connect("device-added", self._deviceChangeCb)
                self.app.deviceprobe.connect("device-removed", self._deviceChangeCb)
                if len(self.app.deviceprobe.getVideoSourceDevices()) < 1:
                    self.webcam_button.set_sensitive(False)
        else:
            self.webcam_button.set_sensitive(False)

        self.show()

    def showEncodingDialog(self, project, pause=True):
        """
        Shows the L{EncodingDialog} for the given project Timeline.

        @param project: The project
        @type project: L{Project}
        @param pause: If C{True}, pause the timeline before displaying the dialog.
        @type pause: C{bool}
        """
        from encodingdialog import EncodingDialog

        if pause:
            project.pipeline.pause()
        win = EncodingDialog(self, project)
        win.window.connect("destroy", self._encodingDialogDestroyCb)
        self.set_sensitive(False)
        win.show()

    def _encodingDialogDestroyCb(self, unused_dialog):
        self.set_sensitive(True)

    def _recordCb(self, unused_button):
        self.showEncodingDialog(self.project)

    def _setActions(self, instance):
        PLAY = _("Start Playback")
        PAUSE = _("Stop Playback")
        LOOP = _("Loop over selected area")

        """ sets up the GtkActions """
        self.actions = [
            ("NewProject", gtk.STOCK_NEW, None,
             None, _("Create a new project"), self._newProjectMenuCb),
            ("OpenProject", gtk.STOCK_OPEN, _("_Open..."),
             None, _("Open an existing project"), self._openProjectCb),
            ("SaveProject", gtk.STOCK_SAVE, None,
             None, _("Save the current project"), self._saveProjectCb),
            ("SaveProjectAs", gtk.STOCK_SAVE_AS, _("Save _As..."),
             None, _("Save the current project"), self._saveProjectAsCb),
            ("RevertToSavedProject", gtk.STOCK_REVERT_TO_SAVED, None,
             None, _("Reload the current project"), self._revertToSavedProjectCb),
            ("ProjectSettings", gtk.STOCK_PROPERTIES, _("Project Settings"),
             None, _("Edit the project settings"), self._projectSettingsCb),
            ("RenderProject", 'pitivi-render' , _("_Render project"),
             None, _("Render project..."), self._recordCb),
            ("Undo", gtk.STOCK_UNDO,
             _("_Undo"),
             "<Ctrl>Z", _("Undo the last operation"), self._undoCb),
            ("Redo", gtk.STOCK_REDO,
             _("_Redo"),
             "<Ctrl>Y", _("Redo the last operation that was undone"), self._redoCb),
            ("PluginManager", gtk.STOCK_PREFERENCES ,
             _("_Plugins..."),
             None, _("Manage plugins"), self._pluginManagerCb),
            ("Preferences", gtk.STOCK_PREFERENCES, _("_Preferences"),
              None, None, self._prefsCb),
            ("ImportfromCam", gtk.STOCK_ADD ,
             _("Import from _Webcam..."),
             None, _("Import Camera stream"), self._ImportWebcam),
            ("Screencast", gtk.STOCK_ADD ,
             _("_Make screencast..."),
             None, _("Capture the desktop"), self._Screencast),
            ("NetstreamCapture", gtk.STOCK_ADD ,
             _("_Capture Network Stream..."),
             None, _("Capture Network Stream"), self._ImportNetstream),
            ("Quit", gtk.STOCK_QUIT, None, None, None, self._quitCb),
            ("About", gtk.STOCK_ABOUT, None, None,
             _("Information about %s") % APPNAME, self._aboutCb),
            ("UserManual", gtk.STOCK_HELP, _("User manual"),
             None, None, self._userManualCb),
            ("File", None, _("_File")),
            ("Edit", None, _("_Edit")),
            ("View", None, _("_View")),
            ("Library", None, _("_Project")),
            ("Timeline", None, _("_Timeline")),
            ("Viewer", None, _("Previe_w")),
            ("PlayPause", gtk.STOCK_MEDIA_PLAY, None, "space", PLAY,
                self.playPause),
            ("Loop", gtk.STOCK_REFRESH, _("Loop"), None, LOOP,
                self.loop),
            ("Help", None, _("_Help")),
        ]

        self.toggleactions = [
            ("FullScreen", gtk.STOCK_FULLSCREEN, None, "f",
             _("View the main window on the whole screen"),
                 self._fullScreenCb),
            ("FullScreenAlternate", gtk.STOCK_FULLSCREEN, None, "F11", None,
                self._fullScreenAlternateCb),
            ("ShowHideMainToolbar", None, _("Main Toolbar"), None, None,
                self._showHideMainToolBar,
                self.settings.mainWindowShowMainToolbar),
            ("ShowHideTimelineToolbar", None, _("Timeline Toolbar"), None,
                None, self._showHideTimelineToolbar,
                self.settings.mainWindowShowTimelineToolbar),
        ]

        self.actiongroup = gtk.ActionGroup("mainwindow")
        self.actiongroup.add_actions(self.actions)
        self.actiongroup.add_toggle_actions(self.toggleactions)
        self.undock_action = gtk.Action("WindowizeViewer", _("Undock Viewer"),
            _("Put the viewer in a serparate window"), None)
        self.actiongroup.add_action(self.undock_action)

        # deactivating non-functional actions
        # FIXME : reactivate them
        save_action = self.actiongroup.get_action("SaveProject")
        save_action.set_sensitive(False)

        for action in self.actiongroup.list_actions():
            action_name = action.get_name()
            if action_name == "RenderProject":
                self.render_button = action
                # this will be set sensitive when the timeline duration changes
                action.set_sensitive(False)
                action.props.is_important = True
            elif action_name == "ImportfromCam":
                self.webcam_button = action
                action.set_sensitive(False)
            elif action_name == "Screencast":
                # FIXME : re-enable this action once istanbul integration is complete
                # and upstream istanbul has applied packages for proper interaction.
                action.set_sensitive(False)
                action.set_visible(False)
            elif action_name in [
                "ProjectSettings", "Quit", "File", "Edit", "Help", "About",
                "View", "FullScreen", "FullScreenAlternate", "UserManual",
                "ImportSourcesFolder", "PluginManager", "PlayPause",
                "Project", "FrameForward", "FrameBackward",
                "ShowHideMainToolbar", "ShowHideTimelineToolbar", "Library",
                "Timeline", "Viewer", "FrameForward", "FrameBackward",
                "SecondForward", "SecondBackward", "EdgeForward",
                "EdgeBackward", "Preferences", "WindowizeViewer"]:
                action.set_sensitive(True)
            elif action_name in ["NewProject", "SaveProjectAs", "OpenProject"]:
                if instance.settings.fileSupportEnabled:
                    action.set_sensitive(True)
            elif action_name == "SaveProject":
                if instance.settings.fileSupportEnabled:
                    action.set_sensitive(True)
                action.props.is_important = True
            elif action_name == "Undo":
                action.set_sensitive(True)
                action.props.is_important = True
            else:
                action.set_sensitive(False)

        self.uimanager = gtk.UIManager()
        self.add_accel_group(self.uimanager.get_accel_group())
        self.uimanager.insert_action_group(self.actiongroup, 0)
        if 'pitivi.exe' in __file__.lower():
            xml = LIBDIR + '\\pitivi.exe'
        else:
            xml = __file__
        self.uimanager.add_ui_from_file(os.path.join(os.path.dirname(
            os.path.abspath(xml)), "mainwindow.xml"))

    def _createUi(self, instance):
        """ Create the graphical interface """
        self.set_title("%s" % (APPNAME))
        self.connect("delete-event", self._deleteCb)
        self.connect("configure-event", self._configureCb)

        # main menu & toolbar
        vbox = gtk.VBox(False)
        self.add(vbox)
        vbox.show()
        self.menu = self.uimanager.get_widget("/MainMenuBar")
        vbox.pack_start(self.menu, expand=False)
        self.menu.show()
        self.toolbar = self.uimanager.get_widget("/MainToolBar")
        vbox.pack_start(self.toolbar, expand=False)
        self.toolbar.show()
        # timeline and project tabs
        vpaned = gtk.VPaned()
        vbox.pack_start(vpaned)
        vpaned.show()

        self.timeline = Timeline(instance, self.uimanager)
        self.timeline.project = self.project

        vpaned.pack2(self.timeline, resize=True, shrink=False)
        self.timeline.show()
        self.mainhpaned = gtk.HPaned()
        vpaned.pack1(self.mainhpaned, resize=True, shrink=False)

        self.secondhpaned = gtk.HPaned()
        self.mainhpaned.pack1(self.secondhpaned, resize=True, shrink=False)
        self.secondhpaned.show()
        self.mainhpaned.show()

        self.projecttabs = BaseTabs(instance)

        self.sourcelist = SourceList(instance, self.uimanager)
        self.projecttabs.append_page(self.sourcelist, gtk.Label(_("Media Library")))
        self._connectToSourceList()
        self.sourcelist.show()

        self.effectlist = EffectList(instance, self.uimanager)
        self.projecttabs.append_page(self.effectlist, gtk.Label(_("Effect Library")))
        self.effectlist.show()

        self.secondhpaned.pack1(self.projecttabs, resize=True, shrink=False)
        self.projecttabs.show()

        # Actions with key accelerators that will be made unsensitive while
        # a gtk entry box is used to avoid conflicts.
        self.sensitive_actions = []
        for action in self.timeline.playhead_actions:
            self.sensitive_actions.append(action[0])
        for action in self.toggleactions:
            self.sensitive_actions.append(action[0])

        #Clips properties
        self.propertiestabs = BaseTabs(instance, True)
        self.clipconfig = ClipProperties(instance, self.uimanager)
        self.clipconfig.project = self.project
        self.propertiestabs.append_page(self.clipconfig,
                                        gtk.Label(_("Effects configurations")))
        self.clipconfig.show()

        self.secondhpaned.pack2(self.propertiestabs, resize= True, shrink=False)
        self.propertiestabs.show()

        # Viewer
        self.viewer = PitiviViewer(instance, undock_action=self.undock_action)
        # drag and drop
        self.viewer.drag_dest_set(gtk.DEST_DEFAULT_DROP | gtk.DEST_DEFAULT_MOTION,
                           [dnd.FILESOURCE_TUPLE, dnd.URI_TUPLE],
                           gtk.gdk.ACTION_COPY)
        self.viewer.connect("drag_data_received", self._viewerDndDataReceivedCb)
        self.mainhpaned.pack2(self.viewer, resize=False, shrink=False)
        self.viewer.connect("expose-event", self._exposeEventCb)

        # window and pane position defaults
        self.mainhpaned = self.mainhpaned
        self.hpaned = self.secondhpaned
        self.vpaned = vpaned
        height = -1
        width = -1
        if self.settings.mainWindowHPanePosition:
            self.hpaned.set_position(self.settings.mainWindowHPanePosition)
        if self.settings.mainWindowMainHPanePosition:
            self.mainhpaned.set_position(self.settings.mainWindowMainHPanePosition)
        if self.settings.mainWindowVPanePosition:
            self.vpaned.set_position(self.settings.mainWindowVPanePosition)
        if self.settings.mainWindowWidth:
            width = self.settings.mainWindowWidth
        if self.settings.mainWindowHeight:
            height = self.settings.mainWindowHeight
        self.set_default_size(width, height)
        if height == -1 and width == -1:
            self.maximize()
        self._do_pending_fullscreen = False
        # FIXME: don't know why this doesn't work
        #if self.settings.mainWindowFullScreen:
        #    self._do_pending_fullscreen = True

        # timeline toolbar
        # FIXME: remove toolbar padding and shadow. In fullscreen mode, the
        # toolbar buttons should be clickable with the mouse cursor at the
        # very bottom of the screen.
        ttb = self.uimanager.get_widget("/TimelineToolBar")
        vbox.pack_start(ttb, expand=False)
        ttb.show()

        self.show()

        if not self.settings.mainWindowShowMainToolbar:
            self.toolbar.props.visible = False

        if not self.settings.mainWindowShowTimelineToolbar:
            ttb.props.visible = False

        #application icon
        self.set_icon_name("pitivi")

        #pulseaudio 'role' (http://0pointer.de/blog/projects/tagging-audio.htm
        os.environ["PULSE_PROP_media.role"] = "production"
        os.environ["PULSE_PROP_application.icon_name"] = "pitivi"

    def _connectToSourceList(self):
        self.sourcelist.connect('play', self._sourceListPlayCb)

    def _launchWizard(self):
        self._wizard = StartUpWizard(self.app)

    def _quitWizardCb(self, projectManager, uri = None):
        if uri.uri != None:
            self._wizard.quit()

    def toggleFullScreen(self):
        """ Toggle the fullscreen mode of the application """
        if not self.is_fullscreen:
            self.viewer.window.fullscreen()
            self.is_fullscreen = True
        else:
            self.viewer.window.unfullscreen()
            self.is_fullscreen = False

    #TODO check if it is the way to go
    def setActionsSensitive(self, action_names, sensitive):
        """
        Permit to get the focus for the keyboard letter keys
        for other operation as typing text in an entry, or loose it
        @param action_names: The name of actions we
                             want to set to sensitive or not
        @type action_names: A {list} of action names
        @param sensitiive: %True if actions must be sensitive False otherwise
        @type action_names: C{Bool}
        """
        for action in self.actiongroup.list_actions():
            if action.get_name() in action_names:
                action.set_sensitive(sensitive)

        if self.timeline:
            for action_group in self.timeline.ui_manager.get_action_groups():
                for action in action_group.list_actions():
                    if action.get_name() in action_names:
                        action.set_sensitive(sensitive)

## Missing Plugin Support

    def _installPlugins(self, details, missingPluginsCallback):
        context = gst.pbutils.InstallPluginsContext()
        context.set_xid(self.window.xid)

        res = gst.pbutils.install_plugins_async(details, context,
                missingPluginsCallback)
        return res

## UI Callbacks

    def _configureCb(self, unused_widget, event):
        if not self.is_fullscreen:
            self.settings.mainWindowWidth = event.width
            self.settings.mainWindowHeight = event.height

    def _deleteCb(self, unused_widget, unused_data=None):
        self._saveWindowSettings()
        if not self.app.shutdown():
            return True

        return False

    def _exposeEventCb(self, unused_widget, event):
        if self._do_pending_fullscreen:
            self._fullScreenAlternateCb(None)
            self._do_pending_fullscreen = False

    def _saveWindowSettings(self):
        self.settings.mainWindowFullScreen = self.is_fullscreen
        self.settings.mainWindowHPanePosition = self.hpaned.get_position()
        self.settings.mainWindowMainHPanePosition = self.mainhpaned.get_position()
        self.settings.mainWindowVPanePosition = self.vpaned.get_position()
        mtb = self.actiongroup.get_action("ShowHideMainToolbar")
        ttb = self.actiongroup.get_action("ShowHideTimelineToolbar")
        self.settings.mainWindowShowMainToolbar = mtb.props.active
        self.settings.mainWindowShowTimelineToolbar = ttb.props.active


    def _sourceListPlayCb(self, sourcelist, factory):
        self._viewFactory(factory)

## Toolbar/Menu actions callback

    def _newProjectMenuCb(self, unused_action):
        self.app.projectManager.newBlankProject()

    def _openProjectCb(self, unused_action):
        self.openProject()

    def _saveProjectCb(self, unused_action):
        if not self.project.uri:
            self._saveProjectAsCb(unused_action)
        else:
            self.app.projectManager.saveProject(self.project, overwrite=True)

    def _saveProjectAsCb(self, unused_action):
        uri = self._showSaveAsDialog(self.app.current)
        if uri is not None:
            return self.app.projectManager.saveProject(self.project, uri, overwrite=True)

        return False

    def _revertToSavedProjectCb(self, unused_action):
        return self.app.projectManager.revertToSavedProject()

    def _projectSettingsCb(self, unused_action):
        self.showProjectSettingsDialog()

    def showProjectSettingsDialog(self):
        from projectsettings import ProjectSettingsDialog
        ProjectSettingsDialog(self, self.app.current).show()

    def _quitCb(self, unused_action):
        self._saveWindowSettings()
        self.app.shutdown()

    def _fullScreenCb(self, unused_action):
        self.toggleFullScreen()

    def _fullScreenAlternateCb(self, unused_action):
        self.actiongroup.get_action("FullScreen").activate()

    def _showHideMainToolBar(self, action):
        self.uimanager.get_widget("/MainToolBar").props.visible = \
            action.props.active

    def _showHideTimelineToolbar(self, action):
        self.uimanager.get_widget("/TimelineToolBar").props.visible = \
            action.props.active

    def _userManualCb(self, unused_action):
        webbrowser.open_new (APPMANUALURL)

    def _aboutResponseCb(self, dialog, unused_response):
        dialog.destroy()

    def _showWebsiteCb(self, dialog, uri):
        webbrowser.open_new(uri)

    def _aboutCb(self, unused_action):
        abt = gtk.AboutDialog()
        abt.set_name(APPNAME)
        abt.set_version("v%s" % pitivi_version)
        gtk.about_dialog_set_url_hook(self._showWebsiteCb)
        abt.set_website(APPURL)
        authors = ["Edward Hervey <*****@*****.**>",
                   "Alessandro Decina <*****@*****.**>",
                   "Brandon Lewis <*****@*****.**> (UI)",
                   "",
                   _("Contributors:"),
                   "Christophe Sauthier <*****@*****.**> (i18n)",
                   "Laszlo Pandy <*****@*****.**> (UI)",
                   "Ernst Persson  <*****@*****.**>",
                   "Richard Boulton <*****@*****.**>",
                   "Thibaut Girka <*****@*****.**> (UI)",
                   "Jean-François Fortin Tam <*****@*****.**> (UI)",
                   "Johan Dahlin <*****@*****.**> (UI)",
                   "Luca Della Santina <*****@*****.**>",
                   "Thijs Vermeir <*****@*****.**>",
                   "Sarath Lakshman <*****@*****.**>"]
        abt.set_authors(authors)
        abt.set_license(_("GNU Lesser General Public License\n"
                          "See http://www.gnu.org/copyleft/lesser.html for more details"))
        abt.set_icon_name("pitivi")
        abt.set_logo_icon_name("pitivi")
        abt.connect("response", self._aboutResponseCb)
        abt.show()

    def openProject(self):
        chooser = gtk.FileChooserDialog(_("Open File..."),
            self,
            action=gtk.FILE_CHOOSER_ACTION_OPEN,
            buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                gtk.STOCK_OPEN, gtk.RESPONSE_OK))
        chooser.set_icon_name("pitivi")
        chooser.set_select_multiple(False)
        chooser.set_current_folder(self.settings.lastProjectFolder)
        formats = formatter.list_formats()
        for format in formats:
            filt = gtk.FileFilter()
            filt.set_name(format[1])
            for ext in format[2]:
                filt.add_pattern("*%s" % ext)
            chooser.add_filter(filt)
        default = gtk.FileFilter()
        default.set_name(_("All Supported Formats"))
        default.add_custom(gtk.FILE_FILTER_URI, supported)
        chooser.add_filter(default)

        response = chooser.run()
        self.settings.lastProjectFolder = chooser.get_current_folder()
        if response == gtk.RESPONSE_OK:
            uri = chooser.get_uri()
            uri = unquote(uri)
            self.app.projectManager.loadProject(uri)

        chooser.destroy()
        return True

    def _undoCb(self, action):
        self.app.action_log.undo()

    def _redoCb(self, action):
        self.app.action_log.redo()

    def _pluginManagerCb(self, unused_action):
        from pluginmanagerdialog import PluginManagerDialog
        PluginManagerDialog(self.app.plugin_manager)

    # Import from Webcam callback
    def _ImportWebcam(self,unused_action):
        from webcam_managerdialog import WebcamManagerDialog
        w = WebcamManagerDialog(self.app)
        w.show()

    # Capture network stream callback
    def _ImportNetstream(self,unused_action):
        from netstream_managerdialog import NetstreamManagerDialog
        NetstreamManagerDialog()

    # screencast callback
    def _Screencast(self,unused_action):
        from screencast_managerdialog import ScreencastManagerDialog
        ScreencastManagerDialog(self.app)

    ## Devices changed
    def _deviceChangeCb(self, probe, unused_device):
        if len(probe.getVideoSourceDevices()) < 1:
            self.webcam_button.set_sensitive(False)
        else:
            self.webcam_button.set_sensitive(True)

    def _hideChildWindow(self, window, event):
        window.hide()
        return True

    def _prefsCb(self, unused_action):
        if not self.prefsdialog:
            from pitivi.ui.prefs import PreferencesDialog
            self.prefsdialog = PreferencesDialog(self.app)
            self.prefsdialog.set_transient_for(self)
            self.prefsdialog.connect("delete-event", self._hideChildWindow)
        self.prefsdialog.show()

    def rewind(self, unused_action):
        pass

    def playPause(self, unused_action):
        self.viewer.togglePlayback()

    def pause(self, unused_action):
        self.viewer.pause()

    def fastForward(self, unused_action):
        pass

    def loop(self, unused_action):
        pass

    def _projectManagerNewProjectLoadedCb(self, projectManager, project):
        self.log("A NEW project is loaded, update the UI!")
        self.project = project
        self._connectToProjectSources(project.sources)
        can_render = project.timeline.duration > 0
        self.render_button.set_sensitive(can_render)
        self._syncDoUndo(self.app.action_log)

        if self._missingUriOnLoading:
            self.app.current.setModificationState(True)
            self.actiongroup.get_action("SaveProject").set_sensitive(True)
            self._missingUriOnLoading = False

        if project.timeline.duration != 0:
            self._setBestZoomRatio()
        else:
            self._zoom_duration_changed = True

        self.project.seeker.connect("seek", self._timelineSeekCb)

        # preliminary seek to ensure the project pipeline is configured
        self.project.seeker.seek(0)

    def _setBestZoomRatio(self):
        ruler_width = self.timeline.ruler.get_allocation()[2]
        timeline_duration = self.project.timeline.duration

        ideal_zoom_ratio = ruler_width / float(timeline_duration / gst.SECOND)
        nearest_zoom_level = Zoomable.computeZoomLevel(ideal_zoom_ratio)
        Zoomable.setZoomLevel(nearest_zoom_level)

    def _projectManagerNewProjectLoadingCb(self, projectManager, uri):
        if uri != None :
            self.manager.add_item(uri)
        self.log("A NEW project is being loaded, deactivate UI")

    def _projectManagerSaveProjectFailedCb(self, projectManager,
            project, uri, exception):
        # FIXME: do something here
        self.error("failed to save project")

    def _projectManagerProjectSavedCb(self, projectManager, project, uri):
        self.app.action_log.checkpoint()
        self._syncDoUndo(self.app.action_log)
        if project.uri is None:
            project.uri = uri

    def _projectManagerClosingProjectCb(self, projectManager, project):
        if not project.hasUnsavedModifications():
            return True

        if project.uri:
            save = gtk.STOCK_SAVE
        else:
            save = gtk.STOCK_SAVE_AS

        dialog = gtk.Dialog("",
            self, gtk.DIALOG_MODAL | gtk.DIALOG_NO_SEPARATOR,
            (_("Close without saving"), gtk.RESPONSE_REJECT,
                    gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                    save, gtk.RESPONSE_YES))
        dialog.set_icon_name("pitivi")
        dialog.set_resizable(False)
        dialog.set_has_separator(False)
        dialog.set_default_response(gtk.RESPONSE_YES)

        primary = gtk.Label()
        primary.set_line_wrap(True)
        primary.set_use_markup(True)
        primary.set_alignment(0, 0.5)

        message = _("Save changes to the current project before closing?")
        primary.set_markup("<span weight=\"bold\">" + message + "</span>")

        secondary = gtk.Label()
        secondary.set_line_wrap(True)
        secondary.set_use_markup(True)
        secondary.set_alignment(0, 0.5)
        secondary.props.label = _("If you don't save some of your "
                "changes will be lost")

        # put the text in a vbox
        vbox = gtk.VBox(False, 12)
        vbox.pack_start(primary, expand=True, fill=True)
        vbox.pack_start(secondary, expand=True, fill=True)

        # make the [[image] text] hbox
        image = gtk.image_new_from_stock(gtk.STOCK_DIALOG_WARNING,
               gtk.ICON_SIZE_DIALOG)
        hbox = gtk.HBox(False, 12)
        hbox.pack_start(image, expand=False)
        hbox.pack_start(vbox, expand=True, fill=True)
        action_area = dialog.get_action_area()
        # FIXME: find out where this "6" comes from. It's needed to align our
        # hbox with the action area button box
        hbox.set_border_width(6)

        # stuff the hbox in the dialog
        content_area = dialog.get_content_area()
        content_area.pack_start(hbox, expand=True, fill=True)
        content_area.set_spacing(14)
        hbox.show_all()

        response = dialog.run()
        dialog.destroy()
        if response == gtk.RESPONSE_YES:
            if project.uri is not None:
                res = self.app.projectManager.saveProject(project, overwrite=True)
            else:
                res = self._saveProjectAsCb(None)
        elif response == gtk.RESPONSE_REJECT:
            res = True
        else:
            res = False

        return res

    def _projectManagerProjectClosedCb(self, projectManager, project):
        # we must disconnect from the project pipeline before it is released
        self._disconnectFromProjectSources(project.sources)
        self.viewer.setAction(None)
        self.viewer.setPipeline(None)
        project.seeker.disconnect_by_func(self._timelineSeekCb)
        return False

    def _projectManagerRevertingToSavedCb(self, projectManager, project):
        if project.hasUnsavedModifications():
            dialog = gtk.MessageDialog(self,
                                gtk.DIALOG_MODAL,
                                gtk.MESSAGE_WARNING,
                                gtk.BUTTONS_NONE,
                                _("Do you want to reload current project?")
                                )
            dialog.set_icon_name("pitivi")
            dialog.add_buttons(gtk.STOCK_CANCEL, gtk.RESPONSE_NO,
                                        gtk.STOCK_REVERT_TO_SAVED, gtk.RESPONSE_YES)
            dialog.set_title(_("Revert to saved project"))
            dialog.set_resizable(False)
            dialog.set_property("secondary-text",
                                            _("All unsaved changes will be lost.")
                                        )
            dialog.set_default_response(gtk.RESPONSE_NO)
            response = dialog.run()
            dialog.destroy()
            if response <> gtk.RESPONSE_YES:
                return False
        return True


    def _projectManagerNewProjectFailedCb(self, projectManager, uri, exception):
        # ungrey UI
        dialog = gtk.MessageDialog(self,
            gtk.DIALOG_MODAL,
            gtk.MESSAGE_ERROR,
            gtk.BUTTONS_OK,
            _("PiTiVi is unable to load file \"%s\"") %
                uri)
        dialog.set_icon_name("pitivi")
        dialog.set_title(_("Error Loading File"))
        dialog.set_property("secondary-text", str(exception))
        dialog.run()
        dialog.destroy()
        self.set_sensitive(True)

    def _projectManagerMissingUriCb(self, instance, formatter, uri, factory):
        dialog = gtk.Dialog(_("Locate missing file..."),
            self,
            gtk.DIALOG_MODAL,
            buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
            gtk.STOCK_OPEN, gtk.RESPONSE_OK))
        dialog.set_icon_name("pitivi")
        dialog.set_border_width(12)
        dialog.get_content_area().set_spacing(6)

        text = _("The following file has moved, please tell PiTiVi where to find it.") + \
            "\n\n" + beautify_factory(factory) + "\n" + \
            "<b>%s</b>" % _("Duration:") + beautify_length(factory.duration)

        label = gtk.Label()
        label.set_markup(text)
        label.set_justify(gtk.JUSTIFY_CENTER)
        dialog.get_content_area().pack_start(label, False, False)
        label.show()

        chooser = gtk.FileChooserWidget(action=gtk.FILE_CHOOSER_ACTION_OPEN)
        chooser.set_select_multiple(False)
        chooser.set_current_folder(self.settings.lastProjectFolder)
        dialog.get_content_area().pack_start(chooser, True, True)
        chooser.show()

        dialog.set_size_request(640, 480)
        response = dialog.run()

        if response == gtk.RESPONSE_OK:
            self.log("User chose a URI to save project to")
            new = chooser.get_uri()
            if new:
                formatter.addMapping(uri, unquote(new))
                self._missingUriOnLoading = True
        else:
            self.log("User didn't choose a URI to save project to")
            # FIXME: not calling addMapping doesn't keep the formatter from
            # re-emitting the same signal. How do we get out of this
            # situation?
            pass

        dialog.destroy()

    def _connectToProjectSources(self, sourcelist):
        sourcelist.connect("missing-plugins", self._sourceListMissingPluginsCb)

    def _disconnectFromProjectSources(self, sourcelist):
        sourcelist.disconnect_by_func(self._sourceListMissingPluginsCb)

    def _actionLogCommit(self, action_log, stack, nested):
        if nested:
            return

        self._syncDoUndo(action_log)

    def _actionLogCleaned(self, action_log):
        self._syncDoUndo(action_log)

    def _actionLogUndo(self, action_log, stack):
        self._syncDoUndo(action_log)

    def _actionLogRedo(self, action_log, stack):
        self._syncDoUndo(action_log)

    def _syncDoUndo(self, action_log):
        undo_action = self.actiongroup.get_action("Undo")
        can_undo = bool(action_log.undo_stacks)
        undo_action.set_sensitive(can_undo)

        dirty = action_log.dirty()
        save_action = self.actiongroup.get_action("SaveProject")
        save_action.set_sensitive(dirty)
        if self.app.current.uri is not None:
            revert_action = self.actiongroup.get_action("RevertToSavedProject")
            revert_action.set_sensitive(dirty)
        self.app.current.setModificationState(dirty)

        redo_action = self.actiongroup.get_action("Redo")
        can_redo = bool(action_log.redo_stacks)
        redo_action.set_sensitive(can_redo)

        if self.project is not None:
            app_name = "%s" % (APPNAME)
            title = u"%s \u2014 %s" % (self.project.name, app_name)
            if dirty:
                title = "*" + title
            title = title.encode("utf8")
            self.set_title(title)

## PiTiVi current project callbacks

    def _setProject(self):
        if self.project:
            self.project_pipeline = self.project.pipeline
            self.project_timeline = self.project.timeline
            if self.timeline:
                self.timeline.project = self.project
                self.clipconfig.project = self.project
                self.app.timelineLogObserver.effect_properties_tracker.pipeline\
                                                        = self.project.pipeline

    project = receiver(_setProject)

    @handler(project, "settings-changed")
    def _settingsChangedCb(self, project, old, new):
        if self.viewer.action == self.project.view_action:
            self.viewer.setDisplayAspectRatio(float(new.videopar *
            new.videowidth) / float(new.videoheight))

    def _sourceListMissingPluginsCb(self, project, uri, factory,
            details, descriptions, missingPluginsCallback):
        res = self._installPlugins(details, missingPluginsCallback)
        return res

## Current Project Pipeline

    def _setProjectPipeline(self):
        if self.project_pipeline:
            # connect to timeline
            self.project_pipeline.activatePositionListener()
            self._timelinePipelinePositionChangedCb(self.project_pipeline, 0)

    project_pipeline = receiver()

    @handler(project_pipeline, "error")
    def _pipelineErrorCb(self, unused_pipeline, error, detail):
        pass

    @handler(project_pipeline, "position")
    def _timelinePipelinePositionChangedCb(self, pipeline, position):
        self.timeline.timelinePositionChanged(position)
        self.timelinepos = position

    @handler(project_pipeline, "state-changed")
    def _timelinePipelineStateChangedCb(self, pipeline, state):
        self.timeline.stateChanged(state)

## Project Timeline (not to be confused with UI timeline)

    project_timeline = receiver()

    @handler(project_timeline, "duration-changed")
    def _timelineDurationChangedCb(self, timeline, duration):
        if duration > 0:
            sensitive = True
            if self._zoom_duration_changed:
                self._setBestZoomRatio()
                self._zoom_duration_changed = False
        else:
            sensitive = False
        self.render_button.set_sensitive(sensitive)

## other

    def _showSaveAsDialog(self, project):
        self.log("Save URI requested")
        chooser = gtk.FileChooserDialog(_("Save As..."),
            self,
            action=gtk.FILE_CHOOSER_ACTION_SAVE,
            buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
            gtk.STOCK_SAVE, gtk.RESPONSE_OK))

        chooser.set_icon_name("pitivi")
        chooser.set_select_multiple(False)
        chooser.set_current_name(_("Untitled.xptv"))
        chooser.set_current_folder(self.settings.lastProjectFolder)
        chooser.props.do_overwrite_confirmation = True
        formats = formatter.list_formats()
        for format in formats:
            filt = gtk.FileFilter()
            filt.set_name(format[1])
            for ext in format[2]:
                filt.add_pattern("*.%s" % ext)
            chooser.add_filter(filt)
        default = gtk.FileFilter()
        default.set_name(_("Detect Automatically"))
        default.add_pattern("*")
        chooser.add_filter(default)

        response = chooser.run()
        self.settings.lastProjectFolder = chooser.get_current_folder()

        if response == gtk.RESPONSE_OK:
            self.log("User chose a URI to save project to")
            # need to do this to work around bug in gst.uri_construct
            # which escapes all /'s in path!
            uri = "file://" + chooser.get_filename()
            format = chooser.get_filter().get_name()
            if format == _("Detect Automatically"):
                format = None
            self.log("uri:%s , format:%s", uri, format)
            ret = uri
        else:
            self.log("User didn't choose a URI to save project to")
            ret = None

        chooser.destroy()
        return ret

    def _viewerDndDataReceivedCb(self, unused_widget, context, unused_x, unused_y,
                           selection, targetType, ctime):
        # FIXME : This should be handled by the main application who knows how
        # to switch between pipelines.
        self.info("context:%s, targetType:%s", context, targetType)
        if targetType == dnd.TYPE_URI_LIST:
            uri = selection.data.strip().split("\n")[0].strip()
        elif targetType == dnd.TYPE_PITIVI_FILESOURCE:
            uri = selection.data
        else:
            context.finish(False, False, ctime)
            return

        # Use factory from our source list if we have the given uri
        try:
            fact = self.project.sources.getUri(uri)
        except SourceListError:
            from pitivi.factories.file import FileSourceFactory
            fact = FileSourceFactory(uri)
        self._viewFactory(fact)
        context.finish(True, False, ctime)

    def _viewFactory(self, factory):
        # FIXME: we change the viewer pipeline unconditionally for now
        # we need a pipeline for playback
        pipeline = Pipeline()
        action = ViewAction()
        action.addProducers(factory)
        self.viewer.setPipeline(None)
        self.viewer.showSlider()
        # FIXME: why do I have to call viewer.setAction ?
        self.viewer.setAction(action)
        self.viewer.setPipeline(pipeline)
        self.viewer.play()

    def _timelineSeekCb(self, ruler, position, format):
        self.debug("position:%s", gst.TIME_ARGS (position))
        if self.viewer.action != self.project.view_action:
            self.viewer.setPipeline(None)
            self.viewer.hideSlider()
            self.viewer.setAction(self.project.view_action)
            self.viewer.setPipeline(self.project.pipeline)
            # get the pipeline settings and set the DAR of the viewer
            sett = self.project.getSettings()
            self.viewer.setDisplayAspectRatio(float(sett.videopar * sett.videowidth) / float(sett.videoheight))
        # everything above only needs to be done if the viewer isn't already
        # set to the pipeline.
        self.project.pipeline.pause()
        try:
            self.project.pipeline.seek(position, format)
        except:
            self.debug("Seeking failed")
예제 #4
0
파일: mainwindow.py 프로젝트: qlf/Pitivi
class PitiviMainWindow(gtk.Window, Loggable):
    """
    Pitivi's main window.

    @cvar app: The application object
    @type app: L{Application}
    @cvar project: The current project
    @type project: L{Project}
    """


    def __init__(self, instance):
        """ initialize with the Pitivi object """
        gtk.Window.__init__(self)
        Loggable.__init__(self)
        self.log("Creating MainWindow")
        self.actions = None
        self.toggleactions = None
        self.actiongroup = None
        self.settings = instance.settings
        self.is_fullscreen = self.settings.mainWindowFullScreen
        self.timelinepos = 0
        self.prefsdialog = None
        create_stock_icons()
        self._setActions(instance)
        self._createUi(instance)
        self.app = instance
        self._zoom_duration_changed = False

        self.app.projectManager.connect("new-project-loading",
                self._projectManagerNewProjectLoadingCb)
        self.app.projectManager.connect("new-project-loaded",
                self._projectManagerNewProjectLoadedCb)
        self.app.projectManager.connect("new-project-failed",
                self._projectManagerNewProjectFailedCb)
        self.app.projectManager.connect("save-project-failed",
                self._projectManagerSaveProjectFailedCb)
        self.app.projectManager.connect("project-saved",
                self._projectManagerProjectSavedCb)
        self.app.projectManager.connect("closing-project",
                self._projectManagerClosingProjectCb)
        self.app.projectManager.connect("reverting-to-saved",
                self._projectManagerRevertingToSavedCb)
        self.app.projectManager.connect("project-closed",
                self._projectManagerProjectClosedCb)
        self.app.projectManager.connect("missing-uri",
                self._projectManagerMissingUriCb)

        self.app.action_log.connect("commit", self._actionLogCommit)
        self.app.action_log.connect("undo", self._actionLogUndo)
        self.app.action_log.connect("redo", self._actionLogRedo)
        self.app.action_log.connect("cleaned", self._actionLogCleaned)

        # if no webcams available, hide the webcam action
        if self.app.deviceprobe is not None:
            # On Windows disable device probe
            if platform.system() != 'Windows':
                self.app.deviceprobe.connect("device-added", self._deviceChangeCb)
                self.app.deviceprobe.connect("device-removed", self._deviceChangeCb)
                if len(self.app.deviceprobe.getVideoSourceDevices()) < 1:
                    self.webcam_button.set_sensitive(False)
        else:
            self.webcam_button.set_sensitive(False)

        self.show()

    def showEncodingDialog(self, project, pause=True):
        """
        Shows the L{EncodingDialog} for the given project Timeline.

        @param project: The project
        @type project: L{Project}
        @param pause: If C{True}, pause the timeline before displaying the dialog.
        @type pause: C{bool}
        """
        from encodingdialog import EncodingDialog

        if pause:
            project.pipeline.pause()
        win = EncodingDialog(self, project)
        win.window.connect("destroy", self._encodingDialogDestroyCb)
        self.set_sensitive(False)
        win.show()

    def _encodingDialogDestroyCb(self, unused_dialog):
        self.set_sensitive(True)

    def _recordCb(self, unused_button):
        self.showEncodingDialog(self.project)

    def _setActions(self, instance):
        PLAY = _("Start Playback")
        PAUSE = _("Stop Playback")
        LOOP = _("Loop over selected area")

        """ sets up the GtkActions """
        self.actions = [
            ("NewProject", gtk.STOCK_NEW, None,
             None, _("Create a new project"), self._newProjectMenuCb),
            ("OpenProject", gtk.STOCK_OPEN, None,
             None, _("Open an existing project"), self._openProjectCb),
            ("SaveProject", gtk.STOCK_SAVE, None,
             None, _("Save the current project"), self._saveProjectCb),
            ("SaveProjectAs", gtk.STOCK_SAVE_AS, None,
             None, _("Save the current project"), self._saveProjectAsCb),
            ("RevertToSavedProject", gtk.STOCK_REVERT_TO_SAVED, None,
             None, _("Reload the current project"), self._revertToSavedProjectCb),
            ("ProjectSettings", gtk.STOCK_PROPERTIES, _("Project Settings"),
             None, _("Edit the project settings"), self._projectSettingsCb),
            ("RenderProject", 'pitivi-render' , _("_Render project"),
             None, _("Render project"), self._recordCb),
            ("Undo", gtk.STOCK_UNDO,
             _("_Undo"),
             "<Ctrl>Z", _("Undo the last operation"), self._undoCb),
            ("Redo", gtk.STOCK_REDO,
             _("_Redo"),
             "<Ctrl>Y", _("Redo the last operation that was undone"), self._redoCb),
            ("PluginManager", gtk.STOCK_PREFERENCES ,
             _("_Plugins..."),
             None, _("Manage plugins"), self._pluginManagerCb),
            ("Preferences", gtk.STOCK_PREFERENCES, _("_Preferences"),
              None, None, self._prefsCb),
            ("ImportfromCam", gtk.STOCK_ADD ,
             _("Import from _Webcam..."),
             None, _("Import Camera stream"), self._ImportWebcam),
            ("Screencast", gtk.STOCK_ADD ,
             _("_Make screencast..."),
             None, _("Capture the desktop"), self._Screencast),
            ("NetstreamCapture", gtk.STOCK_ADD ,
             _("_Capture Network Stream..."),
             None, _("Capture Network Stream"), self._ImportNetstream),
            ("Quit", gtk.STOCK_QUIT, None, None, None, self._quitCb),
            ("About", gtk.STOCK_ABOUT, None, None,
             _("Information about %s") % APPNAME, self._aboutCb),
            ("File", None, _("_File")),
            ("Edit", None, _("_Edit")),
            ("View", None, _("_View")),
            ("Library", None, _("_Project")),
            ("Timeline", None, _("_Timeline")),
            ("Viewer", None, _("Previe_w")),
            ("PlayPause", gtk.STOCK_MEDIA_PLAY, None, "space", PLAY,
                self.playPause),
            ("Loop", gtk.STOCK_REFRESH, _("Loop"), None, LOOP,
                self.loop),
            ("Help", None, _("_Help")),
        ]

        self.toggleactions = [
            ("FullScreen", gtk.STOCK_FULLSCREEN, None, "f",
             _("View the main window on the whole screen"),
                 self._fullScreenCb),
            ("FullScreenAlternate", gtk.STOCK_FULLSCREEN, None, "F11", None,
                self._fullScreenAlternateCb),
            ("ShowHideMainToolbar", None, _("Main Toolbar"), None, None,
                self._showHideMainToolBar,
                self.settings.mainWindowShowMainToolbar),
            ("ShowHideTimelineToolbar", None, _("Timeline Toolbar"), None,
                None, self._showHideTimelineToolbar,
                self.settings.mainWindowShowTimelineToolbar),
        ]

        self.actiongroup = gtk.ActionGroup("mainwindow")
        self.actiongroup.add_actions(self.actions)
        self.actiongroup.add_toggle_actions(self.toggleactions)

        # deactivating non-functional actions
        # FIXME : reactivate them
        save_action = self.actiongroup.get_action("SaveProject")
        save_action.set_sensitive(False)

        for action in self.actiongroup.list_actions():
            action_name = action.get_name()
            if action_name == "RenderProject":
                self.render_button = action
                # this will be set sensitive when the timeline duration changes
                action.set_sensitive(False)
                action.props.is_important = True
            elif action_name == "ImportfromCam":
                self.webcam_button = action
                action.set_sensitive(False)
            elif action_name == "Screencast":
                # FIXME : re-enable this action once istanbul integration is complete
                # and upstream istanbul has applied packages for proper interaction.
                action.set_sensitive(False)
                action.set_visible(False)
            elif action_name in [
                "ProjectSettings", "Quit", "File", "Edit", "Help", "About",
                "View", "FullScreen", "FullScreenAlternate",
                "ImportSourcesFolder", "PluginManager", "PlayPause",
                "Project", "FrameForward", "FrameBackward",
                "ShowHideMainToolbar", "ShowHideTimelineToolbar", "Library",
                "Timeline", "Viewer", "FrameForward", "FrameBackward",
                "SecondForward", "SecondBackward", "EdgeForward",
                "EdgeBackward", "Preferences"]:
                action.set_sensitive(True)
            elif action_name in ["NewProject", "SaveProjectAs", "OpenProject"]:
                if instance.settings.fileSupportEnabled:
                    action.set_sensitive(True)
            elif action_name == "SaveProject":
                if instance.settings.fileSupportEnabled:
                    action.set_sensitive(True)
                action.props.is_important = True
            elif action_name == "Undo":
                action.set_sensitive(True)
                action.props.is_important = True
            else:
                action.set_sensitive(False)

        self.uimanager = gtk.UIManager()
        self.add_accel_group(self.uimanager.get_accel_group())
        self.uimanager.insert_action_group(self.actiongroup, 0)
        if 'pitivi.exe' in __file__.lower():
            xml = LIBDIR + '\\pitivi.exe'
        else:
            xml = __file__
        self.uimanager.add_ui_from_file(os.path.join(os.path.dirname(
            os.path.abspath(xml)), "mainwindow.xml"))

    def _createUi(self, instance):
        """ Create the graphical interface """
        self.set_title("%s" % (APPNAME))
        self.connect("delete-event", self._deleteCb)
        self.connect("configure-event", self._configureCb)

        # main menu & toolbar
        vbox = gtk.VBox(False)
        self.add(vbox)
        vbox.show()
        self.menu = self.uimanager.get_widget("/MainMenuBar")
        vbox.pack_start(self.menu, expand=False)
        self.menu.show()
        self.toolbar = self.uimanager.get_widget("/MainToolBar")
        vbox.pack_start(self.toolbar, expand=False)
        self.toolbar.show()
        # timeline and project tabs
        vpaned = gtk.VPaned()
        vbox.pack_start(vpaned)
        vpaned.show()

        self.timeline = Timeline(instance, self.uimanager)
        self.timeline.project = self.project

        vpaned.pack2(self.timeline, resize=True, shrink=False)
        self.timeline.show()
        self.mainhpaned = gtk.HPaned()
        vpaned.pack1(self.mainhpaned, resize=True, shrink=False)

        self.secondhpaned = gtk.HPaned()
        self.mainhpaned.pack1(self.secondhpaned, resize=True, shrink=False)
        self.secondhpaned.show()
        self.mainhpaned.show()

        self.projecttabs = BaseTabs(instance)

        self.sourcelist = SourceList(instance, self.uimanager)
        self.projecttabs.append_page(self.sourcelist, gtk.Label(_("Media Library")))
        self._connectToSourceList()
        self.sourcelist.show()

        self.effectlist = EffectList(instance, self.uimanager)
        self.projecttabs.append_page(self.effectlist, gtk.Label(_("Effect Library")))
        self.effectlist.show()

        self.secondhpaned.pack1(self.projecttabs, resize=True, shrink=False)
        self.projecttabs.show()

        #Clips properties
        self.propertiestabs = BaseTabs(instance, True)
        self.clipconfig = ClipProperties(instance, self.uimanager)
        self.clipconfig.project = self.project
        self.propertiestabs.append_page(self.clipconfig,
                                        gtk.Label(_("Effects configurations")))
        self.clipconfig.show()

        self.secondhpaned.pack2(self.propertiestabs, resize= True, shrink=False)
        self.propertiestabs.show()

        # Viewer
        self.viewer = PitiviViewer()
        # drag and drop
        self.viewer.drag_dest_set(gtk.DEST_DEFAULT_DROP | gtk.DEST_DEFAULT_MOTION,
                           [dnd.FILESOURCE_TUPLE, dnd.URI_TUPLE],
                           gtk.gdk.ACTION_COPY)
        self.viewer.connect("drag_data_received", self._viewerDndDataReceivedCb)
        self.mainhpaned.pack2(self.viewer, resize=False, shrink=False)
        self.viewer.show()
        self.viewer.connect("expose-event", self._exposeEventCb)

        # window and pane position defaults
        self.mainhpaned = self.mainhpaned
        self.hpaned = self.secondhpaned
        self.vpaned = vpaned
        height = -1
        width = -1
        if self.settings.mainWindowHPanePosition:
            self.hpaned.set_position(self.settings.mainWindowHPanePosition)
        if self.settings.mainWindowMainHPanePosition:
            self.mainhpaned.set_position(self.settings.mainWindowMainHPanePosition)
        if self.settings.mainWindowVPanePosition:
            self.vpaned.set_position(self.settings.mainWindowVPanePosition)
        if self.settings.mainWindowWidth:
            width = self.settings.mainWindowWidth
        if self.settings.mainWindowHeight:
            height = self.settings.mainWindowHeight
        self.set_default_size(width, height)
        if height == -1 and width == -1:
            self.maximize()
        self._do_pending_fullscreen = False
        # FIXME: don't know why this doesn't work
        #if self.settings.mainWindowFullScreen:
        #    self._do_pending_fullscreen = True

        # timeline toolbar
        # FIXME: remove toolbar padding and shadow. In fullscreen mode, the
        # toolbar buttons should be clickable with the mouse cursor at the
        # very bottom of the screen.
        ttb = self.uimanager.get_widget("/TimelineToolBar")
        vbox.pack_start(ttb, expand=False)
        ttb.show()

        self.show()

        if not self.settings.mainWindowShowMainToolbar:
            self.toolbar.props.visible = False

        if not self.settings.mainWindowShowTimelineToolbar:
            ttb.props.visible = False

        #application icon
        self.set_icon_name("pitivi")

        #pulseaudio 'role' (http://0pointer.de/blog/projects/tagging-audio.htm
        os.environ["PULSE_PROP_media.role"] = "production"
        os.environ["PULSE_PROP_application.icon_name"] = "pitivi"

    def _connectToSourceList(self):
        self.sourcelist.connect('play', self._sourceListPlayCb)

    def toggleFullScreen(self):
        """ Toggle the fullscreen mode of the application """
        if not self.is_fullscreen:
            self.viewer.window.fullscreen()
            self.is_fullscreen = True
        else:
            self.viewer.window.unfullscreen()
            self.is_fullscreen = False

    #TODO check if it is the way to go
    def setActionsSensitive(self, action_names, sensitive):
        """
        Permit to get the focus for the keyboard letter keys
        for other operation as typing text in an entry, or loose it
        @param action_names: The name of actions we
                             want to set to sensitive or not
        @type action_names: A {list} of action names
        @param sensitiive: %True if actions must be sensitive False otherwise
        @type action_names: C{Bool}
        """
        for action in self.actiongroup.list_actions():
            if action.get_name() in action_names:
                action.set_sensitive(sensitive)

        if self.timeline:
            for action_group in self.timeline.ui_manager.get_action_groups():
                for action in action_group.list_actions():
                    if action.get_name() in action_names:
                        action.set_sensitive(sensitive)

## PlayGround callback
    def _windowizeViewer(self, button, pane):
        # FIXME: the viewer can't seem to handle being unparented/reparented
        pane.remove(self.viewer)
        window = gtk.Window()
        window.add(self.viewer)
        window.connect("destroy", self._reparentViewer, pane)
        window.resize(200, 200)
        window.show_all()

    def _reparentViewer(self, window, pane):
        window.remove(self.viewer)
        pane.pack2(self.viewer, resize=False, shrink=False)
        self.viewer.show()

## Missing Plugin Support

    def _installPlugins(self, details, missingPluginsCallback):
        context = gst.pbutils.InstallPluginsContext()
        context.set_xid(self.window.xid)

        res = gst.pbutils.install_plugins_async(details, context,
                missingPluginsCallback)
        return res

## UI Callbacks

    def _configureCb(self, unused_widget, event):
        if not self.is_fullscreen:
            self.settings.mainWindowWidth = event.width
            self.settings.mainWindowHeight = event.height

    def _deleteCb(self, unused_widget, unused_data=None):
        self._saveWindowSettings()
        if not self.app.shutdown():
            return True

        return False

    def _exposeEventCb(self, unused_widget, event):
        if self._do_pending_fullscreen:
            self._fullScreenAlternateCb(None)
            self._do_pending_fullscreen = False

    def _saveWindowSettings(self):
        self.settings.mainWindowFullScreen = self.is_fullscreen
        self.settings.mainWindowHPanePosition = self.hpaned.get_position()
        self.settings.mainWindowMainHPanePosition = self.mainhpaned.get_position()
        self.settings.mainWindowVPanePosition = self.vpaned.get_position()
        mtb = self.actiongroup.get_action("ShowHideMainToolbar")
        ttb = self.actiongroup.get_action("ShowHideTimelineToolbar")
        self.settings.mainWindowShowMainToolbar = mtb.props.active
        self.settings.mainWindowShowTimelineToolbar = ttb.props.active


    def _sourceListPlayCb(self, sourcelist, factory):
        self._viewFactory(factory)

## Toolbar/Menu actions callback

    def _newProjectMenuCb(self, unused_action):
        self.app.projectManager.newBlankProject()

    def _openProjectCb(self, unused_action):

        chooser = gtk.FileChooserDialog(_("Open File..."),
            self,
            action=gtk.FILE_CHOOSER_ACTION_OPEN,
            buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                gtk.STOCK_OPEN, gtk.RESPONSE_OK))
        chooser.set_icon_name("pitivi")
        chooser.set_select_multiple(False)
        chooser.set_current_folder(self.settings.lastProjectFolder)
        formats = formatter.list_formats()
        for format in formats:
            filt = gtk.FileFilter()
            filt.set_name(format[1])
            for ext in format[2]:
                filt.add_pattern("*%s" % ext)
            chooser.add_filter(filt)
        default = gtk.FileFilter()
        default.set_name(_("All Supported Formats"))
        default.add_custom(gtk.FILE_FILTER_URI, supported)
        chooser.add_filter(default)

        response = chooser.run()
        self.settings.lastProjectFolder = chooser.get_current_folder()
        if response == gtk.RESPONSE_OK:
            uri = chooser.get_uri()
            uri = unquote(uri)
            self.app.projectManager.loadProject(uri)

        chooser.destroy()
        return True

    def _saveProjectCb(self, unused_action):
        if not self.project.uri:
            self._saveProjectAsCb(unused_action)
        else:
            self.app.projectManager.saveProject(self.project, overwrite=True)

    def _saveProjectAsCb(self, unused_action):
        uri = self._showSaveAsDialog(self.app.current)
        if uri is not None:
            return self.app.projectManager.saveProject(self.project, uri, overwrite=True)

        return False

    def _revertToSavedProjectCb(self, unused_action):
        return self.app.projectManager.revertToSavedProject()


    def _projectSettingsCb(self, unused_action):
        from projectsettings import ProjectSettingsDialog
        ProjectSettingsDialog(self, self.app.current).show()

    def _quitCb(self, unused_action):
        self._saveWindowSettings()
        self.app.shutdown()

    def _fullScreenCb(self, unused_action):
        self.toggleFullScreen()

    def _fullScreenAlternateCb(self, unused_action):
        self.actiongroup.get_action("FullScreen").activate()

    def _showHideMainToolBar(self, action):
        self.uimanager.get_widget("/MainToolBar").props.visible = \
            action.props.active

    def _showHideTimelineToolbar(self, action):
        self.uimanager.get_widget("/TimelineToolBar").props.visible = \
            action.props.active

    def _aboutResponseCb(self, dialog, unused_response):
        dialog.destroy()

    def _showWebsiteCb(self, dialog, uri):
        import webbrowser
        webbrowser.open_new(uri)

    def _aboutCb(self, unused_action):
        abt = gtk.AboutDialog()
        abt.set_name(APPNAME)
        abt.set_version("v%s" % pitivi_version)
        gtk.about_dialog_set_url_hook(self._showWebsiteCb)
        abt.set_website("http://www.pitivi.org/")
        authors = ["Edward Hervey <*****@*****.**>",
                   "Alessandro Decina <*****@*****.**>",
                   "Brandon Lewis <*****@*****.**> (UI)",
                   "",
                   _("Contributors:"),
                   "Christophe Sauthier <*****@*****.**> (i18n)",
                   "Laszlo Pandy <*****@*****.**> (UI)",
                   "Ernst Persson  <*****@*****.**>",
                   "Richard Boulton <*****@*****.**>",
                   "Thibaut Girka <*****@*****.**> (UI)",
                   "Jeff Fortin <*****@*****.**> (UI)",
                   "Johan Dahlin <*****@*****.**> (UI)",
                   "Luca Della Santina <*****@*****.**>",
                   "Thijs Vermeir <*****@*****.**>",
                   "Sarath Lakshman <*****@*****.**>"]
        abt.set_authors(authors)
        abt.set_license(_("GNU Lesser General Public License\n"
                          "See http://www.gnu.org/copyleft/lesser.html for more details"))
        abt.set_icon_name("pitivi")
        abt.set_logo_icon_name("pitivi")
        abt.connect("response", self._aboutResponseCb)
        abt.show()

    def _undoCb(self, action):
        self.app.action_log.undo()

    def _redoCb(self, action):
        self.app.action_log.redo()

    def _pluginManagerCb(self, unused_action):
        from pluginmanagerdialog import PluginManagerDialog
        PluginManagerDialog(self.app.plugin_manager)

    # Import from Webcam callback
    def _ImportWebcam(self,unused_action):
        from webcam_managerdialog import WebcamManagerDialog
        w = WebcamManagerDialog(self.app)
        w.show()

    # Capture network stream callback
    def _ImportNetstream(self,unused_action):
        from netstream_managerdialog import NetstreamManagerDialog
        NetstreamManagerDialog()

    # screencast callback
    def _Screencast(self,unused_action):
        from screencast_managerdialog import ScreencastManagerDialog
        ScreencastManagerDialog(self.app)

    ## Devices changed
    def _deviceChangeCb(self, probe, unused_device):
        if len(probe.getVideoSourceDevices()) < 1:
            self.webcam_button.set_sensitive(False)
        else:
            self.webcam_button.set_sensitive(True)

    def _hideChildWindow(self, window, event):
        window.hide()
        return True

    def _prefsCb(self, unused_action):
        if not self.prefsdialog:
            from pitivi.ui.prefs import PreferencesDialog
            self.prefsdialog = PreferencesDialog(self.app)
            self.prefsdialog.set_transient_for(self)
            self.prefsdialog.connect("delete-event", self._hideChildWindow)
        self.prefsdialog.show()

    def rewind(self, unused_action):
        pass

    def playPause(self, unused_action):
        self.viewer.togglePlayback()

    def pause(self, unused_action):
        self.viewer.pause()

    def fastForward(self, unused_action):
        pass

    def loop(self, unused_action):
        pass

    def _projectManagerNewProjectLoadedCb(self, projectManager, project):
        self.log("A NEW project is loaded, update the UI!")
        self.project = project
        self._connectToProjectSources(project.sources)
        can_render = project.timeline.duration > 0
        self.render_button.set_sensitive(can_render)
        self._syncDoUndo(self.app.action_log)

        if project.timeline.duration != 0:
            self._setBestZoomRatio()
        else:
            self._zoom_duration_changed = True

        self.project.seeker.connect("seek", self._timelineSeekCb)

        # preliminary seek to ensure the project pipeline is configured
        self.project.seeker.seek(0)

    def _setBestZoomRatio(self):
        ruler_width = self.timeline.ruler.get_allocation()[2]
        timeline_duration = self.project.timeline.duration

        ideal_zoom_ratio = ruler_width / float(timeline_duration / gst.SECOND)
        nearest_zoom_level = Zoomable.computeZoomLevel(ideal_zoom_ratio)
        Zoomable.setZoomLevel(nearest_zoom_level)

    def _projectManagerNewProjectLoadingCb(self, projectManager, uri):
        self.log("A NEW project is being loaded, deactivate UI")

    def _projectManagerSaveProjectFailedCb(self, projectManager,
            project, uri, exception):
        # FIXME: do something here
        self.error("failed to save project")

    def _projectManagerProjectSavedCb(self, projectManager, project, uri):
        self.app.action_log.checkpoint()
        self._syncDoUndo(self.app.action_log)
        if project.uri is None:
            project.uri = uri

    def _projectManagerClosingProjectCb(self, projectManager, project):
        if not project.hasUnsavedModifications():
            return True

        if project.uri:
            save = gtk.STOCK_SAVE
        else:
            save = gtk.STOCK_SAVE_AS

        dialog = gtk.Dialog("",
            self, gtk.DIALOG_MODAL | gtk.DIALOG_NO_SEPARATOR,
            (_("Close without saving"), gtk.RESPONSE_REJECT,
                    gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                    save, gtk.RESPONSE_YES))
        dialog.set_icon_name("pitivi")
        dialog.set_resizable(False)
        dialog.set_has_separator(False)
        dialog.set_default_response(gtk.RESPONSE_YES)

        primary = gtk.Label()
        primary.set_line_wrap(True)
        primary.set_use_markup(True)
        primary.set_alignment(0, 0.5)

        message = _("Save changes to the current project before closing?")
        primary.set_markup("<span weight=\"bold\">" + message + "</span>")

        secondary = gtk.Label()
        secondary.set_line_wrap(True)
        secondary.set_use_markup(True)
        secondary.set_alignment(0, 0.5)
        secondary.props.label = _("If you don't save some of your "
                "changes will be lost")

        # put the text in a vbox
        vbox = gtk.VBox(False, 12)
        vbox.pack_start(primary, expand=True, fill=True)
        vbox.pack_start(secondary, expand=True, fill=True)

        # make the [[image] text] hbox
        image = gtk.image_new_from_stock(gtk.STOCK_DIALOG_WARNING,
               gtk.ICON_SIZE_DIALOG)
        hbox = gtk.HBox(False, 12)
        hbox.pack_start(image, expand=False)
        hbox.pack_start(vbox, expand=True, fill=True)
        action_area = dialog.get_action_area()
        # FIXME: find out where this "6" comes from. It's needed to align our
        # hbox with the action area button box
        hbox.set_border_width(6)

        # stuff the hbox in the dialog
        content_area = dialog.get_content_area()
        content_area.pack_start(hbox, expand=True, fill=True)
        content_area.set_spacing(14)
        hbox.show_all()

        response = dialog.run()
        dialog.destroy()
        if response == gtk.RESPONSE_YES:
            if project.uri is not None:
                res = self.app.projectManager.saveProject(project, overwrite=True)
            else:
                res = self._saveProjectAsCb(None)
        elif response == gtk.RESPONSE_REJECT:
            res = True
        else:
            res = False

        return res

    def _projectManagerProjectClosedCb(self, projectManager, project):
        # we must disconnect from the project pipeline before it is released
        self._disconnectFromProjectSources(project.sources)
        self.viewer.setAction(None)
        self.viewer.setPipeline(None)
        project.seeker.disconnect_by_func(self._timelineSeekCb)
        return False

    def _projectManagerRevertingToSavedCb(self, projectManager, project):
        if project.hasUnsavedModifications():
            dialog = gtk.MessageDialog(self,
                                gtk.DIALOG_MODAL,
                                gtk.MESSAGE_WARNING,
                                gtk.BUTTONS_NONE,
                                _("Do you want to reload current project?")
                                )
            dialog.set_icon_name("pitivi")
            dialog.add_buttons(gtk.STOCK_CANCEL, gtk.RESPONSE_NO,
                                        gtk.STOCK_REVERT_TO_SAVED, gtk.RESPONSE_YES)
            dialog.set_title(_("Revert to saved project"))
            dialog.set_resizable(False)
            dialog.set_property("secondary-text",
                                            _("All unsaved changes will be lost.")
                                        )
            dialog.set_default_response(gtk.RESPONSE_NO)
            response = dialog.run()
            dialog.destroy()
            if response <> gtk.RESPONSE_YES:
                return False
        return True


    def _projectManagerNewProjectFailedCb(self, projectManager, uri, exception):
        # ungrey UI
        dialog = gtk.MessageDialog(self,
            gtk.DIALOG_MODAL,
            gtk.MESSAGE_ERROR,
            gtk.BUTTONS_OK,
            _("PiTiVi is unable to load file \"%s\"") %
                uri)
        dialog.set_icon_name("pitivi")
        dialog.set_title(_("Error Loading File"))
        dialog.set_property("secondary-text", str(exception))
        dialog.run()
        dialog.destroy()
        self.set_sensitive(True)

    def _projectManagerMissingUriCb(self, instance, formatter, uri, factory):
        dialog = gtk.Dialog(_("Locate missing file..."),
            self,
            gtk.DIALOG_MODAL,
            buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
            gtk.STOCK_OPEN, gtk.RESPONSE_OK))
        dialog.set_icon_name("pitivi")
        dialog.set_border_width(12)
        dialog.get_content_area().set_spacing(6)

        text = _("The following file has moved, please tell PiTiVi where to find it.") + \
            "\n\n" + beautify_factory(factory) + "\n" + \
            "<b>%s</b>" % _("Duration:") + beautify_length(factory.duration)

        label = gtk.Label()
        label.set_markup(text)
        label.set_justify(gtk.JUSTIFY_CENTER)
        dialog.get_content_area().pack_start(label, False, False)
        label.show()

        chooser = gtk.FileChooserWidget(action=gtk.FILE_CHOOSER_ACTION_OPEN)
        chooser.set_select_multiple(False)
        chooser.set_current_folder(self.settings.lastProjectFolder)
        dialog.get_content_area().pack_start(chooser, True, True)
        chooser.show()

        dialog.set_size_request(640, 480)
        response = dialog.run()

        if response == gtk.RESPONSE_OK:
            self.log("User chose a URI to save project to")
            new = chooser.get_uri()
            if new:
                formatter.addMapping(uri, unquote(new))
        else:
            self.log("User didn't choose a URI to save project to")
            # FIXME: not calling addMapping doesn't keep the formatter from
            # re-emitting the same signal. How do we get out of this
            # situation?
            pass

        dialog.destroy()

    def _connectToProjectSources(self, sourcelist):
        sourcelist.connect("missing-plugins", self._sourceListMissingPluginsCb)

    def _disconnectFromProjectSources(self, sourcelist):
        sourcelist.disconnect_by_func(self._sourceListMissingPluginsCb)

    def _actionLogCommit(self, action_log, stack, nested):
        if nested:
            return

        self._syncDoUndo(action_log)

    def _actionLogCleaned(self, action_log):
        self._syncDoUndo(action_log)

    def _actionLogUndo(self, action_log, stack):
        self._syncDoUndo(action_log)

    def _actionLogRedo(self, action_log, stack):
        self._syncDoUndo(action_log)

    def _syncDoUndo(self, action_log):
        undo_action = self.actiongroup.get_action("Undo")
        can_undo = bool(action_log.undo_stacks)
        undo_action.set_sensitive(can_undo)

        dirty = action_log.dirty()
        save_action = self.actiongroup.get_action("SaveProject")
        save_action.set_sensitive(dirty)
        if self.app.current.uri is not None:
            revert_action = self.actiongroup.get_action("RevertToSavedProject")
            revert_action.set_sensitive(dirty)
        self.app.current.setModificationState(dirty)

        redo_action = self.actiongroup.get_action("Redo")
        can_redo = bool(action_log.redo_stacks)
        redo_action.set_sensitive(can_redo)

        if self.project is not None:
            app_name = "%s" % (APPNAME)
            title = u"%s \u2014 %s" % (self.project.name, app_name)
            if dirty:
                title = "*" + title
            title = title.encode("utf8")
            self.set_title(title)

## PiTiVi current project callbacks

    def _setProject(self):
        if self.project:
            self.project_pipeline = self.project.pipeline
            self.project_timeline = self.project.timeline
            if self.timeline:
                self.timeline.project = self.project
                self.clipconfig.project = self.project
                self.app.timelineLogObserver.effect_properties_tracker.pipeline\
                                                        = self.project.pipeline

    project = receiver(_setProject)

    @handler(project, "settings-changed")
    def _settingsChangedCb(self, project, old, new):
        if self.viewer.action == self.project.view_action:
            self.viewer.setDisplayAspectRatio(float(new.videopar *
            new.videowidth) / float(new.videoheight))

    def _sourceListMissingPluginsCb(self, project, uri, factory,
            details, descriptions, missingPluginsCallback):
        res = self._installPlugins(details, missingPluginsCallback)
        return res

## Current Project Pipeline

    def _setProjectPipeline(self):
        if self.project_pipeline:
            # connect to timeline
            self.project_pipeline.activatePositionListener()
            self._timelinePipelinePositionChangedCb(self.project_pipeline, 0)

    project_pipeline = receiver()

    @handler(project_pipeline, "error")
    def _pipelineErrorCb(self, unused_pipeline, error, detail):
        pass

    @handler(project_pipeline, "position")
    def _timelinePipelinePositionChangedCb(self, pipeline, position):
        self.timeline.timelinePositionChanged(position)
        self.timelinepos = position

    @handler(project_pipeline, "state-changed")
    def _timelinePipelineStateChangedCb(self, pipeline, state):
        self.timeline.stateChanged(state)

## Project Timeline (not to be confused with UI timeline)

    project_timeline = receiver()

    @handler(project_timeline, "duration-changed")
    def _timelineDurationChangedCb(self, timeline, duration):
        if duration > 0:
            sensitive = True
            if self._zoom_duration_changed:
                self._setBestZoomRatio()
                self._zoom_duration_changed = False
        else:
            sensitive = False
        self.render_button.set_sensitive(sensitive)

## other

    def _showSaveAsDialog(self, project):
        self.log("Save URI requested")
        chooser = gtk.FileChooserDialog(_("Save As..."),
            self,
            action=gtk.FILE_CHOOSER_ACTION_SAVE,
            buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
            gtk.STOCK_SAVE, gtk.RESPONSE_OK))

        chooser.set_icon_name("pitivi")
        chooser.set_select_multiple(False)
        chooser.set_current_name(_("Untitled.xptv"))
        chooser.set_current_folder(self.settings.lastProjectFolder)
        chooser.props.do_overwrite_confirmation = True
        formats = formatter.list_formats()
        for format in formats:
            filt = gtk.FileFilter()
            filt.set_name(format[1])
            for ext in format[2]:
                filt.add_pattern("*.%s" % ext)
            chooser.add_filter(filt)
        default = gtk.FileFilter()
        default.set_name(_("Detect Automatically"))
        default.add_pattern("*")
        chooser.add_filter(default)

        response = chooser.run()
        self.settings.lastProjectFolder = chooser.get_current_folder()

        if response == gtk.RESPONSE_OK:
            self.log("User chose a URI to save project to")
            # need to do this to work around bug in gst.uri_construct
            # which escapes all /'s in path!
            uri = "file://" + chooser.get_filename()
            format = chooser.get_filter().get_name()
            if format == _("Detect Automatically"):
                format = None
            self.log("uri:%s , format:%s", uri, format)
            ret = uri
        else:
            self.log("User didn't choose a URI to save project to")
            ret = None

        chooser.destroy()
        return ret

    def _viewerDndDataReceivedCb(self, unused_widget, context, unused_x, unused_y,
                           selection, targetType, ctime):
        # FIXME : This should be handled by the main application who knows how
        # to switch between pipelines.
        self.info("context:%s, targetType:%s", context, targetType)
        if targetType == dnd.TYPE_URI_LIST:
            uri = selection.data.strip().split("\n")[0].strip()
        elif targetType == dnd.TYPE_PITIVI_FILESOURCE:
            uri = selection.data
        else:
            context.finish(False, False, ctime)
            return

        # Use factory from our source list if we have the given uri
        try:
            fact = self.project.sources.getUri(uri)
        except SourceListError:
            from pitivi.factories.file import FileSourceFactory
            fact = FileSourceFactory(uri)
        self._viewFactory(fact)
        context.finish(True, False, ctime)

    def _viewFactory(self, factory):
        # FIXME: we change the viewer pipeline unconditionally for now
        # we need a pipeline for playback
        pipeline = Pipeline()
        action = ViewAction()
        action.addProducers(factory)
        self.viewer.setPipeline(None)
        self.viewer.showSlider()
        # FIXME: why do I have to call viewer.setAction ?
        self.viewer.setAction(action)
        self.viewer.setPipeline(pipeline)
        self.viewer.play()

    def _timelineSeekCb(self, ruler, position, format):
        self.debug("position:%s", gst.TIME_ARGS (position))
        if self.viewer.action != self.project.view_action:
            self.viewer.setPipeline(None)
            self.viewer.hideSlider()
            self.viewer.setAction(self.project.view_action)
            self.viewer.setPipeline(self.project.pipeline)
            # get the pipeline settings and set the DAR of the viewer
            sett = self.project.getSettings()
            self.viewer.setDisplayAspectRatio(float(sett.videopar * sett.videowidth) / float(sett.videoheight))
        # everything above only needs to be done if the viewer isn't already
        # set to the pipeline.
        self.project.pipeline.pause()
        try:
            self.project.pipeline.seek(position, format)
        except:
            self.debug("Seeking failed")