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# -*- coding: utf-8 -*-
#! /usr/bin/python
#
# Copyright (C) 2009-12 Walter Bender
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this library; if not, write to the Free Software
# Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
import gtk
import gobject
import subprocess
from gettext import gettext as _
from config import ICONS_DIR, CAPTURE_GAIN, MIC_BOOST, XO1, XO15, XO175, XO30,\
INSTRUMENT_DICT
from sugar.graphics.toolbutton import ToolButton
from sugar.graphics.combobox import ComboBox
from sugar.graphics.toolcombobox import ToolComboBox
from sugar.graphics import style
import logging
log = logging.getLogger('measure-activity')
log.setLevel(logging.DEBUG)
NOTES = ['C', 'C♯/D♭', 'D', 'D♯/E♭', 'E', 'F', 'F♯/G♭', 'G', 'G♯/A♭', 'A',
'A♯/B♭', 'B']
SHARP = '♯'
FLAT = '♭'
A0 = 27.5
C8 = 4186.01
TWELTHROOT2 = 1.05946309435929
COLOR_RED = style.Color('#FF6060')
COLOR_YELLOW = style.Color('#FFFF00')
COLOR_GREEN = style.Color('#00FF00')
SPAN = '<span foreground="%s"><big><b>%s</b></big></span>'
class TuningToolbar(gtk.Toolbar):
''' The toolbar for tuning instruments '''
def __init__(self, activity):
gtk.Toolbar.__init__(self)
self.activity = activity
self._show_tuning_line = False
self._updating_note = True
self._tuning_tool = None
# Set up Instrument Combo box
self.instrument_combo = ComboBox()
self.instrument = [_('None')]
for k in INSTRUMENT_DICT.keys():
self.instrument.append(k)
self._instrument_changed_id = self.instrument_combo.connect(
'changed', self.update_instrument_control)
for i, instrument in enumerate(self.instrument):
self.instrument_combo.append_item(i, instrument, None)
self.instrument_combo.set_active(0)
if hasattr(self.instrument_combo, 'set_tooltip_text'):
self.instrument_combo.set_tooltip_text(_('Tune an instrument.'))
self._instrument_tool = ToolComboBox(self.instrument_combo)
self.insert(self._instrument_tool, -1)
if self.activity.has_toolbarbox:
separator = gtk.SeparatorToolItem()
separator.props.draw = True
self.insert(separator, -1)
self._notes_combo = ComboBox()
n = 0
for octave in range(9):
for i in range(len(NOTES)):
if octave == 0 and i < 9: # Start with A0
continue
self._notes_combo.append_item(
n, note_octave(i, octave), None)
n += 1
self._notes_combo.set_active(48) # A4
self._notes_changed_id = self._notes_combo.connect(
'changed', self.update_note)
if hasattr(self._notes_combo, 'set_tooltip_text'):
self._notes_combo.set_tooltip_text(_('Notes'))
self._notes_tool = ToolComboBox(self._notes_combo)
self.insert(self._notes_tool, -1)
# The entry is used to display a note or for direct user input
self._freq_entry = gtk.Entry()
self._freq_entry.set_text('440') # A
self._freq_entry_changed_id = self._freq_entry.connect(
'changed', self.update_freq_entry)
if hasattr(self._freq_entry, 'set_tooltip_text'):
self._freq_entry.set_tooltip_text(
_('Enter a frequency to display.'))
self._freq_entry.set_width_chars(8)
self._freq_entry.show()
toolitem = gtk.ToolItem()
toolitem.add(self._freq_entry)
self.insert(toolitem, -1)
toolitem.show()
self._new_tuning_line = ToolButton('tuning-tools')
self._new_tuning_line.show()
self.insert(self._new_tuning_line, -1)
self._new_tuning_line.set_tooltip(_('Show tuning line.'))
self._new_tuning_line.connect('clicked', self.tuning_line_cb)
if self.activity.has_toolbarbox:
separator = gtk.SeparatorToolItem()
separator.props.draw = True
self.insert(separator, -1)
self._harmonic = ToolButton('harmonics')
self._harmonic.show()
self.insert(self._harmonic, -1)
self._harmonic.set_tooltip(_('Show harmonics.'))
self._harmonic.connect('clicked', self.harmonic_cb)
if self.activity.has_toolbarbox:
separator = gtk.SeparatorToolItem()
separator.props.draw = True
self.insert(separator, -1)
self._play_tone = ToolButton('media-playback-start')
self._play_tone.show()
self.insert(self._play_tone, -1)
self._play_tone.set_tooltip(_('Play a note.'))
self._play_tone.connect('clicked', self.play_cb)
if self.activity.has_toolbarbox:
separator = gtk.SeparatorToolItem()
separator.props.draw = False
separator.set_expand(True)
self.insert(separator, -1)
self.label = gtk.Label('')
self.label.set_use_markup(True)
self.label.show()
toolitem = gtk.ToolItem()
toolitem.add(self.label)
self.insert(toolitem, -1)
toolitem.show()
self.show_all()
def update_note(self, *args):
''' Calculate the frequency based on note combo '''
if not hasattr(self, '_freq_entry'): # Still setting up toolbar
return
i = self._notes_combo.get_active()
freq = A0 * pow(TWELTHROOT2, i)
self._updating_note = True
self._freq_entry.set_text('%0.3f' % (freq))
self.label.set_markup(SPAN % (style.COLOR_WHITE.get_html(),
note_octave(index_to_note(i),
index_to_octave(i))))
if self._show_tuning_line:
self.activity.wave.tuning_line = freq
return
def update_tuning_control(self, *args):
''' Update note '''
if not hasattr(self, '_freq_entry'): # Still setting up toolbar?
return
instrument = self.instrument[self.instrument_combo.get_active()]
if not instrument in INSTRUMENT_DICT:
return
if self.tuning[self._tuning_combo.get_active()] == _('All notes'):
self._notes_combo.set_active(
freq_index(INSTRUMENT_DICT[instrument][0]))
self.activity.wave.instrument = instrument
self.activity.wave.tuning_line = 0.0
self._new_tuning_line.set_icon('tuning-tools')
self._new_tuning_line.set_tooltip(_('Show tuning line.'))
self._show_tuning_line = False
else:
freq = INSTRUMENT_DICT[instrument][
self._tuning_combo.get_active() - 1] # All notes is 0
self._notes_combo.set_active(
freq_index(INSTRUMENT_DICT[instrument][
self._tuning_combo.get_active() - 1]))
self.activity.wave.instrument = None
self.activity.wave.tuning_line = freq
self._new_tuning_line.set_icon('tuning-tools-off')
self._new_tuning_line.set_tooltip(_('Hide tuning line.'))
self._show_tuning_line = True
self._updating_note = False
def update_freq_entry(self, *args):
# Calcualte a note from a frequency
if not self._updating_note: # Only if user types in a freq.
try:
freq = float(self._freq_entry.get_text())
# Only consider notes in piano range
if freq < A0 * 0.97:
self.label.set_text('< A0')
return
if freq > C8 * 1.03:
self.label.set_text('> C8')
return
self.label.set_markup(freq_note(freq, flatsharp=True))
except ValueError:
return
self._updating_note = False
def update_instrument_control(self, *args):
''' Callback for instrument control '''
instrument = self.instrument[self.instrument_combo.get_active()]
if self._tuning_tool is not None:
self.remove(self._tuning_tool)
if instrument == _('None'):
self.activity.wave.instrument = None
if hasattr(self, '_notes_tool'):
self.insert(self._notes_tool, 2)
return
self.remove(self._notes_tool)
self.activity.wave.instrument = instrument
# If we are not already in freq. base, switch.
if not self.activity.wave.get_fft_mode():
self.activity.timefreq_control()
# Add a Tuning Combo box for this instrument
self._tuning_combo = ComboBox()
self.tuning = [_('All notes')]
for f in INSTRUMENT_DICT[instrument]:
self.tuning.append(freq_note(f))
self._tuning_changed_id = self._tuning_combo.connect(
'changed', self.update_tuning_control)
for i, s in enumerate(self.tuning):
self._tuning_combo.append_item(i, s, None)
self._tuning_combo.set_active(0)
if hasattr(self._tuning_combo, 'set_tooltip_text'):
self._tuning_combo.set_tooltip_text(instrument)
self._tuning_tool = ToolComboBox(self._tuning_combo)
self.insert(self._tuning_tool, 1)
self._tuning_combo.show()
self._tuning_tool.show()
self.show_all()
def harmonic_cb(self, *args):
''' Callback for harmonics control '''
self.activity.wave.harmonics = not self.activity.wave.harmonics
if self.activity.wave.harmonics:
self._harmonic.set_icon('harmonics-off')
self._harmonic.set_tooltip(_('Hide harmonics.'))
if self.activity.wave.instrument is None and \
self.activity.wave.tuning_line == 0.0:
self._load_tuning_line()
else:
self._harmonic.set_icon('harmonics')
self._harmonic.set_tooltip(_('Show harmonics.'))
def tuning_line_cb(self, *args):
''' Callback for tuning insert '''
if self._show_tuning_line:
self.activity.wave.tuning_line = 0.0
self._new_tuning_line.set_icon('tuning-tools')
self._new_tuning_line.set_tooltip(_('Show tuning line.'))
self._show_tuning_line = False
else:
self._load_tuning_line()
def _load_tuning_line(self):
''' Read the freq entry and use value to set tuning line '''
freq = self._freq_entry.get_text()
try:
self.activity.wave.tuning_line = float(freq)
if freq < 0:
freq = -freq
self._new_tuning_line.set_icon('tuning-tools-off')
self._new_tuning_line.set_tooltip(_('Hide tuning line.'))
self._show_tuning_line = True
except ValueError:
self.activity.wave.tuning_line = 0.0
self._freq_entry.set_text('0')
# If we are not already in freq. base, switch.
if not self.activity.wave.get_fft_mode():
self.activity.timefreq_control()
def play_cb(self, *args):
''' Save settings, turn off display, and then play a tone at
the current frequency '''
freq = float(self._freq_entry.get_text())
channels = []
for c in range(self.activity.audiograb.channels):
channels.append(self.activity.wave.get_visibility(channel=c))
self.activity.wave.set_visibility(False, channel=c)
wave_status = self.activity.wave.get_active()
self.activity.wave.set_context_off()
self.activity.wave.set_active(False)
gobject.timeout_add(200, self.play_sound, freq, channels, wave_status)
def play_sound(self, freq, channels, wave_status):
''' Play the sound and then restore wave settings '''
if hasattr(subprocess, 'check_output'):
try:
output = subprocess.check_output(
['speaker-test', '-t', 'sine', '-l', '1', '-f', '%f' % (
freq)])
except subprocess.CalledProcessError:
log.warning('call to speaker-test failed?')
else:
import commands
(status, output) = commands.getstatusoutput(
'speaker-test -t sine -l 1 -f %f' % (freq))
if status != 0:
log.warning('call to speaker-test failed?')
for c in range(self.activity.audiograb.channels):
self.activity.wave.set_visibility(channels[c], channel=c)
self.activity.wave.set_context_on()
self.activity.wave.set_active(wave_status)
class InstrumentToolbar(gtk.Toolbar):
''' The toolbar for adding new instruments '''
def __init__(self, activity):
gtk.Toolbar.__init__(self)
self.activity = activity
self.new_instruments = []
self._name_entry = gtk.Entry()
self._name_entry.set_text(_('my instrument'))
self._name_entry_changed_id = self._name_entry.connect(
'changed', self.update_name_entry)
if hasattr(self._name_entry, 'set_tooltip_text'):
self._name_entry.set_tooltip_text(
_('Enter instrument name.'))
self._name_entry.set_width_chars(24)
self._name_entry.show()
toolitem = gtk.ToolItem()
toolitem.add(self._name_entry)
self.insert(toolitem, -1)
toolitem.show()
self._notes_combo = ComboBox()
n = 0
for octave in range(9):
for i in range(len(NOTES)):
if octave == 0 and i < 9: # Start with A0
continue
self._notes_combo.append_item(
n, note_octave(i, octave), None)
n += 1
self._notes_combo.set_active(48) # A4
if hasattr(self._notes_combo, 'set_tooltip_text'):
self._notes_combo.set_tooltip_text(_('Notes'))
self._notes_tool = ToolComboBox(self._notes_combo)
self.insert(self._notes_tool, -1)
self._notes_tool.show()
self._new_note = ToolButton('list-add')
self._new_note.show()
self.insert(self._new_note, -1)
self._new_note.set_tooltip(_('Add a new note.'))
self._new_note.connect('clicked', self.new_note_cb)
def update_name_entry(self, *args):
''' Add name to INSTRUMENT_DICT and combo box '''
# Wait until a note has been added...
return
def new_note_cb(self, *args):
''' Add a new note to instrument tuning list '''
name = self._name_entry.get_text()
if name not in INSTRUMENT_DICT:
INSTRUMENT_DICT[name] = []
self.activity.tuning_toolbar.instrument.append(name)
i = len(self.activity.tuning_toolbar.instrument)
self.activity.tuning_toolbar.instrument_combo.append_item(
i, name, None)
self.new_instruments.append(name)
i = self._notes_combo.get_active()
freq = A0 * pow(TWELTHROOT2, i)
if freq not in INSTRUMENT_DICT[name]:
INSTRUMENT_DICT[name].append(freq)
def note_octave(note, octave):
if '/' in NOTES[note]:
flat, sharp = NOTES[note].split('/')
return '%s%d/%s%d' % (flat, octave, sharp, octave)
else:
return '%s%d' % (NOTES[note], octave)
def freq_note(freq, flatsharp=False):
if flatsharp: # calculate if we are sharp or flat
for i in range(88):
f = A0 * pow(TWELTHROOT2, i)
if freq < f * 1.03 and freq > f * 0.97:
label = NOTES[index_to_note(i)]
if freq < f * 0.98:
label = '%s %s %s' % (FLAT, label, FLAT)
return SPAN % (COLOR_RED.get_html(), label)
elif freq < f * 0.99:
label = '%s %s %s' % (FLAT, label, FLAT)
return SPAN % (COLOR_YELLOW.get_html(), label)
elif freq > f * 1.02:
label = '%s %s %s' % (SHARP, label, SHARP)
return SPAN % (COLOR_RED.get_html(), label)
elif freq > f * 1.01:
label = '%s %s %s' % (SHARP, label, SHARP)
return SPAN % (COLOR_YELLOW.get_html(), label)
else:
return SPAN % (style.COLOR_WHITE.get_html(), label)
else:
for i in range(88):
f = A0 * pow(TWELTHROOT2, i)
if freq < f * 1.03 and freq > f * 0.97: # Found a match
return note_octave(index_to_note(i), index_to_octave(i))
return '?'
def freq_index(freq):
for i in range(88):
f = A0 * pow(TWELTHROOT2, i)
if freq < f * 1.03 and freq > f * 0.97: # Found a match
return i
return 0
def index_to_octave(i):
return int((i - 3) / 12) + 1 # -3 because we start with A
def index_to_note(i):
return (i - 3) % 12 # -3 because we start with A
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