gui.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 import configparser
  19 import logging
  20 import os
  21
  22 import gi
  23 from gi.repository import GObject
  24 from serialization import SerializedObject
  25
  26 try:
  27     import xdg
  28     from xdg import BaseDirectory
  29 except:
  30     xdg = None
  31
  32
  33 log = logging.getLogger(__name__)
  34
  35
  36 def lookup_scale(scales, scale_id):
  37     for scale in scales:
  38         if scale_id == scale.scale_id:
  39             return scale
  40     return None
  41
  42
  43 class Factory(GObject.GObject, SerializedObject):
  44
  45     def __init__(self, topwindow, meter_scales, slider_scales):
  46         self.midi_behavior_modes = [ 'Jump To Value', 'Pick Up' ]
  47         GObject.GObject.__init__(self)
  48         self.topwindow = topwindow
  49         self.meter_scales = meter_scales
  50         self.slider_scales = slider_scales
  51         self.set_default_preferences()
  52         if xdg:
  53             self.config = configparser.ConfigParser()
  54             self.path = os.path.join(BaseDirectory.save_config_path('jack_mixer'), 'preferences.ini')
  55             if os.path.isfile(self.path):
  56                 self.read_preferences()
  57             else:
  58                 self.write_preferences()
  59         else:
  60             log.warning("Cannot load PyXDG. Your preferences will not be preserved across "
  61                         "jack_mixer invocations")
  62
  63     def set_default_preferences(self):
  64         self.default_meter_scale = self.meter_scales[0]
  65         self.default_slider_scale = self.slider_scales[0]
  66         self.vumeter_color = '#ccb300'
  67         self.vumeter_color_scheme = 'default'
  68         self.use_custom_widgets = False
  69         self.midi_behavior_mode = 0
  70
  71     def read_preferences(self):
  72         self.config.read(self.path)
  73         scale_id = self.config['Preferences']['default_meter_scale']
  74         self.default_meter_scale = lookup_scale(self.meter_scales, scale_id)
  75         if not self.default_meter_scale:
  76             self.default_meter_scale = self.meter_scales[0]
  77
  78         scale_id = self.config['Preferences']['default_slider_scale']
  79         self.default_slider_scale = lookup_scale(self.slider_scales, scale_id)
  80         if not self.default_slider_scale:
  81             self.default_slider_scale = slider_scales[0]
  82
  83         self.vumeter_color_scheme = self.config['Preferences']['vumeter_color_scheme']
  84         if not self.vumeter_color_scheme:
  85             self.vumeter_color_scheme = 'default'
  86
  87         self.vumeter_color = self.config['Preferences']['vumeter_color']
  88         if not self.vumeter_color:
  89             self.vumeter_color = '#ccb300'
  90
  91         self.use_custom_widgets = self.config["Preferences"]["use_custom_widgets"] == 'True'
  92
  93         mode = 0
  94         try:
  95             mode = int(self.config["Preferences"]["midi_behavior_mode"])
  96         except:
  97             pass
  98         self.midi_behavior_mode = mode
  99
 100     def write_preferences(self):
 101         self.config['Preferences'] = {}
 102         self.config['Preferences']['default_meter_scale'] = self.default_meter_scale.scale_id
 103         self.config['Preferences']['default_slider_scale'] = self.default_slider_scale.scale_id
 104         self.config['Preferences']['vumeter_color_scheme'] = self.vumeter_color_scheme
 105         self.config['Preferences']['vumeter_color'] = self.vumeter_color
 106         self.config['Preferences']['use_custom_widgets'] = str(self.use_custom_widgets)
 107         self.config['Preferences']['midi_behavior_mode'] = str(self.midi_behavior_mode)
 108         with open(self.path, 'w') as configfile:
 109             self.config.write(configfile)
 110             configfile.close()
 111
 112     def set_default_meter_scale(self, scale):
 113         if scale:
 114             self.default_meter_scale = scale
 115             if xdg:
 116                 self.write_preferences()
 117             self.emit("default-meter-scale-changed", self.default_meter_scale)
 118         else:
 119             log.warning('Ignoring default_meter_scale setting, because "%s" scale is not known.',
 120                         scale)
 121
 122     def set_default_slider_scale(self, scale):
 123         if scale:
 124             self.default_slider_scale = scale
 125             if xdg:
 126                 self.write_preferences()
 127             self.emit("default-slider-scale-changed", self.default_slider_scale)
 128         else:
 129             log.warning('Ignoring default_slider_scale setting, because "%s" scale is not known.',
 130                         scale)
 131
 132     def set_vumeter_color(self, color):
 133         self.vumeter_color = color
 134         if xdg:
 135             self.write_preferences()
 136         self.emit('vumeter-color-changed', self.vumeter_color)
 137
 138     def set_vumeter_color_scheme(self, color_scheme):
 139         self.vumeter_color_scheme = color_scheme
 140         if xdg:
 141             self.write_preferences()
 142         self.emit('vumeter-color-scheme-changed', self.vumeter_color_scheme)
 143
 144     def set_use_custom_widgets(self, use_custom):
 145         self.use_custom_widgets = use_custom
 146         if xdg:
 147             self.write_preferences()
 148         self.emit('use-custom-widgets-changed', self.use_custom_widgets)
 149
 150     def set_midi_behavior_mode(self, mode):
 151         self.midi_behavior_mode = int(mode)
 152         self.emit_midi_behavior_mode()
 153
 154     def emit_midi_behavior_mode(self):
 155         self.emit("midi-behavior-mode-changed", self.midi_behavior_mode)
 156
 157     def get_default_meter_scale(self):
 158         return self.default_meter_scale
 159
 160     def get_default_slider_scale(self):
 161         return self.default_slider_scale
 162
 163     def get_vumeter_color(self):
 164         return self.vumeter_color
 165
 166     def get_vumeter_color_scheme(self):
 167         return self.vumeter_color_scheme
 168
 169     def get_use_custom_widgets(self):
 170         return self.use_custom_widgets
 171
 172     def get_midi_behavior_mode(self):
 173         return self.midi_behavior_mode
 174
 175     @classmethod
 176     def serialization_name(cls):
 177         return 'gui_factory'
 178
 179     def serialize(self, object_backend):
 180         object_backend.add_property("default_meter_scale",
 181                 self.get_default_meter_scale().scale_id)
 182         object_backend.add_property("default_slider_scale",
 183                 self.get_default_slider_scale().scale_id)
 184         object_backend.add_property("vumeter_color_scheme",
 185                 self.get_vumeter_color_scheme())
 186         object_backend.add_property("vumeter_color",
 187                 self.get_vumeter_color())
 188         object_backend.add_property("use_custom_widgets",
 189                 str(self.get_use_custom_widgets()))
 190         object_backend.add_property("midi_behavior_mode",
 191                 str(self.get_midi_behavior_mode()))
 192
 193     def unserialize_property(self, name, value):
 194         if name == "default_meter_scale":
 195             self.set_default_meter_scale(lookup_scale(self.meter_scales, value))
 196             return True
 197         if name == "default_slider_scale":
 198             self.set_default_slider_scale(lookup_scale(self.slider_scales, value))
 199             return True
 200         if name == "vumeter_color_scheme":
 201             self.set_vumeter_color_scheme(value)
 202             return True
 203         if name == "vumeter_color":
 204             self.set_vumeter_color(value)
 205             return True
 206         if name == "use_custom_widgets":
 207             self.set_use_custom_widgets(value == 'True')
 208             return True
 209         if name == "midi_behavior_mode":
 210             self.set_midi_behavior_mode(int(value))
 211             return True
 212         return False
 213
 214
 215 GObject.signal_new("default-meter-scale-changed", Factory,
 216                 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION,
 217                 None, [GObject.TYPE_PYOBJECT])
 218 GObject.signal_new("default-slider-scale-changed", Factory,
 219                 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION,
 220                 None, [GObject.TYPE_PYOBJECT])
 221 GObject.signal_new('vumeter-color-changed', Factory,
 222                 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION,
 223                 None, [str])
 224 GObject.signal_new('vumeter-color-scheme-changed', Factory,
 225                 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION,
 226                 None, [str])
 227 GObject.signal_new('use-custom-widgets-changed', Factory,
 228                 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION,
 229                 None, [bool])
 230 GObject.signal_new('midi-behavior-mode-changed', Factory,
 231                 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION,
 232                 None, [int])