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Viewing changes to InstrumentConnectionsDialog.py

  • Committer: Bazaar Package Importer
  • Author(s): Daniel Holbach
  • Date: 2006-07-19 18:49:10 UTC
  • Revision ID: james.westby@ubuntu.com-20060719184910-0av4ghk8vsjvcij3
Tags: upstream-0.1
Import upstream version 0.1

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InstrumentConnectionsDialog.py
 
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import gtk
 
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import gtk.glade
 
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import gobject
 
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import pygst
 
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pygst.require("0.10")
 
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import gst
 
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import os
 
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import sys
 
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import Globals
 
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import Project
 
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import AlsaDevices
 
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#=========================================================================
 
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class InstrumentConnectionsDialog:
 
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        """ This class handles all of the processing associated with the
 
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                Instrument Connections dialog.
 
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        """     
 
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        #_____________________________________________________________________
 
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        def __init__(self, project, parent):
 
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                if project:
 
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                        self.project = project
 
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                else:
 
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                        return
 
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                self.res = gtk.glade.XML(parent.GLADE_PATH, "InstrumentConnectionsDialog")
 
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                self.signals = {
 
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                        "on_close_clicked" : self.OnClose,
 
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                }
 
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                self.res.signal_autoconnect(self.signals)
 
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                self.window = self.res.get_widget("InstrumentConnectionsDialog")
 
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                self.vbox = self.res.get_widget("vbox")
 
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                if len(self.project.instruments) > 0:
 
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                        self.Populate()
 
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                else:
 
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                        self.res.get_widget("explainLabel").set_text("There are no instruments to connect")
 
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                self.parent = parent
 
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                self.window.set_icon(self.parent.icon)
 
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                self.window.show_all()
 
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        #_____________________________________________________________________
 
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        def OnClose(self, button):
 
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                self.window.destroy()
 
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        def Populate(self):
 
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                self.mixers = {}
 
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                for device in AlsaDevices.GetAlsaList("capture").values():
 
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                        #Don't want the default device twice (once as 'default' and once as its actual hw ref)
 
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                        if device == "default":
 
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                                continue
 
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                        mixer = gst.element_factory_make('alsamixer')
 
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                        mixer.set_property("device", device)
 
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                        mixer.set_state(gst.STATE_READY)
 
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                        if not mixer.implements_interface(gst.interfaces.Mixer):
 
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                                print 'Cannot get mixer tracks from the device. Check permissions on the mixer device.'
 
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                        else:
 
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                                self.mixers[device] = mixer.list_tracks()
 
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                        mixer.set_state(gst.STATE_NULL)
 
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                for instr in self.project.instruments:                  
 
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                        instrument = instr
 
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                        row = gtk.HBox()
 
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                        row.set_spacing(10)
 
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                        image = gtk.Image()
 
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                        image.set_from_pixbuf(instrument.pixbuf)
 
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                        label = gtk.Label(instrument.name)
 
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                        liststore = gtk.ListStore(gobject.TYPE_STRING)
 
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                        combobox = gtk.ComboBox(liststore)
 
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                        cell = gtk.CellRendererText()
 
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                        combobox.pack_start(cell, True)
 
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                        combobox.add_attribute(cell, 'text', 0)
 
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                        self.AlsaID = []
 
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                        currentItem = 0
 
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                        for device in self.mixers:
 
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                                mixertracks = self.mixers[device]
 
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                                for t in mixertracks:
 
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                                        if t.flags & gst.interfaces.MIXER_TRACK_INPUT:
 
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                                                combobox.append_text(t.label)
 
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                                                if instr.inTrack and instr.input == device and t.label == instr.inTrack:
 
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                                                        combobox.set_active(currentItem)
 
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                                                self.AlsaID.append(device)
 
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                                                currentItem += 1
 
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                        combobox.connect("changed", self.OnSelected, instr)
 
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                        row.pack_start(combobox, False, False)
 
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                        row.pack_start(image, False, False)
 
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                        row.pack_start(label, False, False)
 
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                        self.vbox.add(row)
 
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        def OnSelected(self, widget, instr):
 
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                '''Set the instrument's input'''
 
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                device = self.AlsaID[widget.get_active()]
 
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                mixertracks = self.mixers[device]
 
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                for track in mixertracks:
 
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                        if track.label == widget.get_active_text():
 
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                                inTrack = track.label
 
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                print inTrack
 
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                if device != instr.input or inTrack != instr.inTrack:
 
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                        instr.input = device
 
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                        instr.inTrack = inTrack
 
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                        self.project.unsavedChanges = True