abspeak.py

   1 # This file is part of jack_mixer
   2 #
   3 # Copyright (C) 2006 Nedko Arnaudov <nedko@arnaudov.name>
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; version 2 of the License
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 from gi.repository import Gtk
  19 from gi.repository import Gdk
  20 from gi.repository import Pango
  21 from gi.repository import GObject
  22 import math
  23
  24 class AbspeakWidget(Gtk.EventBox):
  25     def __init__(self):
  26         GObject.GObject.__init__(self)
  27         self.label = Gtk.Label()
  28         #attrs = Pango.AttrList()
  29         #font_attr =  Pango.AttrFamily("monospace")
  30         #attrs.insert(font_attr)
  31         #self.label.set_attributes(attrs)
  32         self.add(self.label)
  33         self.connect("button-press-event", self.on_mouse)
  34         self.peak = -math.inf
  35
  36     def on_mouse(self, widget, event):
  37         if event.type == Gdk.EventType.BUTTON_PRESS:
  38             if event.button == 1:
  39                 self.emit("reset")
  40             elif event.button == 2:
  41                 adjust = -self.peak
  42                 if abs(adjust) < 30:    # we better don't adjust more than +- 30 dB
  43                     self.emit("volume-adjust", adjust)
  44
  45     def set_peak(self, peak):
  46         self.peak = peak
  47         if math.isnan(peak):
  48             self.modify_bg(Gtk.StateType.NORMAL, Gdk.Color(int(65535 * 0.7), 0, 0))
  49             self.label.set_text("NaN")
  50         else:
  51             text = "%+.1f" % peak
  52
  53             if peak > 0:
  54                 self.modify_bg(Gtk.StateType.NORMAL, Gdk.Color(int(65535 * 0.8), int(65535 * 0.3), 0))
  55             else:
  56                 pass
  57                 #self.modify_bg(Gtk.StateType.NORMAL, self.label.style.bg[Gtk.StateType.NORMAL])
  58
  59             self.label.set_text(text)
  60
  61 GObject.signal_new("reset", AbspeakWidget,
  62                    GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION, None, [])
  63 GObject.signal_new("volume-adjust", AbspeakWidget,
  64                    GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION, None, [GObject.TYPE_FLOAT])