abspeak.py

   1 #!/usr/bin/env python
   2 #
   3 # This file is part of jack_mixer
   4 #
   5 # Copyright (C) 2006 Nedko Arnaudov <nedko@arnaudov.name>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; version 2 of the License
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19
  20 import gtk
  21 import fpconst
  22 import pango
  23 import gobject
  24
  25 class widget(gtk.EventBox):
  26     def __init__(self):
  27         gtk.EventBox.__init__(self)
  28         self.label = gtk.Label()
  29         attrs = pango.AttrList()
  30         font_attr =  pango.AttrFamily("monospace")
  31         attrs.insert(font_attr)
  32         self.label.set_attributes(attrs)
  33         self.add(self.label)
  34         self.connect("button-press-event", self.on_mouse)
  35         self.peak = fpconst.NegInf
  36
  37     def on_mouse(self, widget, event):
  38         if event.type == gtk.gdk.BUTTON_PRESS:
  39             if event.button == 1:
  40                 self.emit("reset")
  41             elif event.button == 2:
  42                 adjust = -self.peak
  43                 if abs(adjust) < 30:    # we better don't adjust more than +- 30 dB
  44                     self.emit("volume-adjust", adjust)
  45
  46     def set_peak(self, peak):
  47         self.peak = peak
  48         if fpconst.isNaN(peak):
  49             self.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(int(65535 * 0.7), 0, 0))
  50             self.label.set_text("NaN")
  51         else:
  52             text = "%+.1f" % peak
  53
  54             if peak > 0:
  55                 self.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(int(65535 * 0.8), int(65535 * 0.3), 0))
  56             else:
  57                 self.modify_bg(gtk.STATE_NORMAL, self.label.style.bg[gtk.STATE_NORMAL])
  58
  59             self.label.set_text(text)
  60
  61 gobject.signal_new("reset", widget, gobject.SIGNAL_RUN_FIRST | gobject.SIGNAL_ACTION, gobject.TYPE_NONE, [])
  62 gobject.signal_new("volume-adjust", widget, gobject.SIGNAL_RUN_FIRST | gobject.SIGNAL_ACTION, gobject.TYPE_NONE, [gobject.TYPE_FLOAT])