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# -*- coding: utf-8 -*-
#! /usr/bin/python
#
# Author: Arjun Sarwal arjun@laptop.org
# Copyright (C) 2007, Arjun Sarwal
# Copyright (C) 2009,10 Walter Bender
# Copyright (C) 2009, Benjamin Berg, Sebastian Berg
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
import gtk
import gobject
import os
from gettext import gettext as _
from config import ICONS_DIR
from sugar.graphics.toolbutton import ToolButton
from sugar.graphics.combobox import ComboBox
from sugar.graphics.toolcombobox import ToolComboBox
import logging
log = logging.getLogger('Measure')
log.setLevel(logging.DEBUG)
class SensorToolbar(gtk.Toolbar):
""" The toolbar for resitance and voltage sensors """
def __init__(self, activity):
""" By default, start with resistance mode """
gtk.Toolbar.__init__(self)
self.mode = 'resistance'
self._STR_BASIC = \
_("Sensors, DC (connect sensor to pink 'Mic In' on left side of XO)") \
+ ' '
self._STR_R = _('Bias/Offset Enabled') + ' ' + _('Ohms') + ' '
self._STR_V = _('Bias/Offset Disabled') + ' ' + _('Volts') + ' '
self._STR_I = ' ' + _('Invert') + ' '
self.string_for_textbox = ""
self.activity = activity
self.activity.audiograb.set_sensor(self)
# Set up Resistance Button
if self.activity.has_toolbarbox:
self.resistance = ToolButton('bias-on')
else:
self.resistance = ToolButton('bias-on2')
self.insert(self.resistance, -1)
self.resistance.show()
self.resistance.set_tooltip(_('Resistance Sensor'))
self.resistance.connect('clicked', self.set_resistance_voltage_mode,
'resistance')
# Set up Voltage Button
self.voltage = ToolButton('bias-off')
self.insert(self.voltage, -1)
self.voltage.set_tooltip(_('Voltage Sensor'))
self.voltage.connect('clicked', self.set_resistance_voltage_mode,
'voltage')
# Set up Invert Button
self._invert = ToolButton('invert')
self.insert(self._invert, -1)
self._invert.set_tooltip(_('Invert'))
self._invert.connect('clicked', self._invert_control_cb)
self.activity.wave.set_invert_state(False)
separator = gtk.SeparatorToolItem()
separator.props.draw = True
self.insert(separator, -1)
# Set up Logging Interval combo box
self.loginterval_img = gtk.Image()
self.loginterval_img.set_from_file(os.path.join(ICONS_DIR,
'sample_rate.svg'))
self.loginterval_img_tool = gtk.ToolItem()
self.loginterval_img_tool.add(self.loginterval_img)
self.insert(self.loginterval_img_tool, -1)
self._loginterval_combo = ComboBox()
self.interval = [_('1/10 second'), _('1 second'), _('30 seconds'),
_('5 minutes'), _('30 minutes')]
if hasattr(self._loginterval_combo, 'set_tooltip_text'):
self._loginterval_combo.set_tooltip_text(_('Sampling interval'))
self._interval_changed_id = self._loginterval_combo.connect("changed",
self.loginterval_control)
for i, s in enumerate(self.interval):
self._loginterval_combo.append_item(i, s, None)
if s == _('1 second'):
self._loginterval_combo.set_active(i)
self._loginterval_tool = ToolComboBox(self._loginterval_combo)
self.insert(self._loginterval_tool, -1)
self.logginginterval_status = '1 second'
# Set up Logging/Stop Logging Button
self._record = ToolButton('media-record')
self.insert(self._record, -1)
self._record.set_tooltip(_('Start Recording'))
self._record.connect('clicked', self.record_control)
self.show_all()
def set_sample_value(self, label=None):
""" Write a sample value to the textbox """
gtk.threads_enter()
self._update_string_for_textbox(label)
gtk.threads_leave()
return
def record_control(self, data=None):
"""Depending upon the selected interval, does either
a logging session, or just logs the current buffer"""
if not self.activity.LOGGING_IN_SESSION:
Xscale = (1.00 / self.activity.audiograb.get_sampling_rate())
Yscale = 0.0
interval = self.interval_convert()
username = self.activity.nick
print "calling start new session"
self.activity.ji.start_new_session(username, Xscale, Yscale,
_(self.logginginterval_status))
self.activity.audiograb.set_logging_params(True, interval, False)
self.activity.LOGGING_IN_SESSION = True
self._record.set_icon('record-stop')
self._record.show()
self._record.set_tooltip(_('Stop Recording'))
else:
self.activity.audiograb.set_logging_params(False)
self.activity.LOGGING_IN_SESSION = False
self._record.set_icon('media-record')
self._record.show()
self._record.set_tooltip(_('Start Recording'))
def interval_convert(self):
"""Converts interval string to an integer that denotes the number
of times the audiograb buffer must be called before a value is written.
When set to 0, the whole of current buffer will be written"""
interval_dictionary = {'1/10 second': 0.1, '1 second': 1,
'30 seconds': 30,
'5 minutes': 300, '30 minutes': 1800}
try:
return interval_dictionary[self.logginginterval_status]
except ValueError:
logging.error('logging interval status = %s' %\
(str(self.logginginterval_status)))
return 0
def loginterval_control(self, combobox):
""" Callback from the Logging Interval Combo box: sets status """
if self._loginterval_combo.get_active() != -1:
intervals = ['1/10 second', '1 second', '30 seconds',
'5 minutes', '30 minutes']
self.logginginterval_status = \
intervals[self._loginterval_combo.get_active()]
def set_resistance_voltage_mode(self, data=None, mode_to_set='resistance'):
""" Callback for Resistance/Voltage Buttons """
# Make sure the current context is for sensor capture.
if self.activity.CONTEXT != 'sensor':
self.activity.set_sensor_context()
self.set_mode(mode_to_set)
if mode_to_set == 'resistance':
self.resistance.set_icon('bias-on2')
self.voltage.set_icon('bias-off')
self.resistance.show()
self.voltage.show()
self._update_string_for_textbox()
if self.activity.has_toolbarbox:
self.activity.label_button.set_icon('bias-on2')
self.activity.label_button.set_tooltip(_('Resistance Sensor'))
elif mode_to_set == 'voltage':
self.resistance.set_icon('bias-on')
self.voltage.set_icon('bias-off2')
self.resistance.show()
self.voltage.show()
self._update_string_for_textbox()
if self.activity.has_toolbarbox:
self.activity.label_button.set_icon('bias-off2')
self.activity.label_button.set_tooltip(_('Voltage Sensor'))
else:
logging.error('unknown mode %s' % (mode_to_set))
if self.activity.has_toolbarbox:
self.activity.sound_toolbar.time.set_icon('domain-time')
self.activity.sound_toolbar.freq.set_icon('domain-freq')
return False
def _invert_control_cb(self, data=None):
""" Callback for Invert Button """
if self.activity.wave.get_invert_state():
self.activity.wave.set_invert_state(False)
self._invert.set_icon('invert')
self._invert.show()
else:
self.activity.wave.set_invert_state(True)
self._invert.set_icon('invert2')
self._invert.show()
self._update_string_for_textbox()
return False
def set_mode(self, mode='resistance'):
""" Set the mixer settings to match the current mode. """
self.mode = mode
self.activity.audiograb.set_sensor_type(self.mode)
return
def context_off(self):
""" Called when sensor toolbar is no longer selected. """
self.activity.audiograb.pause_grabbing()
def context_on(self):
""" Called when sensor toolbar is selected. """
self.activity.audiograb.resume_grabbing()
self.activity.audiograb.set_sensor_type(self.mode)
self._update_string_for_textbox()
self.activity.wave.set_trigger(self.activity.wave.TRIGGER_NONE)
return False
def _update_string_for_textbox(self, value=None):
""" Update the status field at the bottom of the canvas. """
self.string_for_textbox = ""
self.string_for_textbox += (self._STR_BASIC + "\n")
if self.mode == 'resistance':
self.string_for_textbox += self._STR_R
else:
self.string_for_textbox += self._STR_V
if self.activity.wave.get_invert_state():
self.string_for_textbox += self._STR_I
if value is not None:
self.string_for_textbox += '\t(%s)' % (str(value))
self.activity.text_box.set_data_params(0, self.string_for_textbox)
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