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# GNU Solfege - free ear training software
# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Tom Cato Amundsen
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import gtk
import gobject
import random
import gu, utils
from multipleintervalconfigwidget import nIntervalCheckBox
import mpd, mpd.musicdisplayer, soundcard
import abstract
import lessonfile
class Teacher(abstract.Teacher):
OK = 0
ERR_PICKY = 1
ERR_CONFIGURE = 2
def __init__(self, exname, app):
abstract.Teacher.__init__(self, exname, app)
self.lessonfileclass = lessonfile.HeaderLessonfile
self.m_custom_mode = False
def give_up(self):
self.q_status = self.QSTATUS_GIVE_UP
def new_question(self):
"""
Return a true value if a new question was created otherwise false.
"""
if self.m_timeout_handle:
gobject.source_remove(self.m_timeout_handle)
self.m_timeout_handle = None
if self.get_bool('config/picky_on_new_question') \
and self.q_status in [self.QSTATUS_NEW, self.QSTATUS_WRONG]:
return Teacher.ERR_PICKY
first = self.get_list('first_interval_up')
if self.get_string('first_interval_type') == 'melodic':
first = first + map(lambda a: -a, self.get_list('first_interval_down'))
last = self.get_list('last_interval_up')
if self.get_string('last_interval_type') == 'melodic':
last = last + map(lambda a: -a, self.get_list('last_interval_down'))
if not (first and last):
return self.ERR_CONFIGURE
self.m_intervals = [random.choice(first), random.choice(last)]
self.m_tonikas = [mpd.MusicalPitch().randomize("f", "f'"),
mpd.MusicalPitch().randomize("f", "f'")]
self.q_status = self.QSTATUS_NEW
return self.OK
def play_question(self):
if self.q_status == self.QSTATUS_NO:
return
low_instr, low_vel, high_instr, high_vel = self.get_instrument_config(2)
t1 = soundcard.Track()
t2 = soundcard.Track()
t1.set_patch(low_instr)
t2.set_patch(high_instr)
if self.get_string('first_interval_type') == 'harmonic':
t1.note(4, self.m_tonikas[0], low_vel)
t2.note(4, self.m_tonikas[0] + self.m_intervals[0], high_vel)
else:
t1.note(4, self.m_tonikas[0], low_vel)
t1.notelen_time(4)
t2.notelen_time(4)
t2.note(4, self.m_tonikas[0] + self.m_intervals[0], high_vel)
if self.get_string('last_interval_type') == 'harmonic':
t1.note(4, self.m_tonikas[1], low_vel)
t2.note(4, self.m_tonikas[1] + self.m_intervals[1], high_vel)
else:
t1.note(4, self.m_tonikas[1], low_vel)
t1.notelen_time(4)
t2.notelen_time(4)
t2.note(4, self.m_tonikas[1] + self.m_intervals[1], high_vel)
soundcard.synth.play_track(t1, t2)
def guess_answer(self, c):
"""
argument c:
-1 : first is largest
0 : equal
1 : last is largest
Return: 1 if correct, 0 if wrong
"""
a = cmp(abs(self.m_intervals[1]), abs(self.m_intervals[0])) == c
if a:
self.maybe_auto_new_question()
self.q_status = self.QSTATUS_SOLVED
else:
self.q_status = self.QSTATUS_WRONG
return a
class Gui(abstract.Gui):
def __init__(self, teacher, window):
abstract.Gui.__init__(self, teacher, window)
self._ignore_events = 0
##############
# practise_box
##############
self.practise_box.set_spacing(gu.PAD)
hbox = gu.bHBox(self.practise_box)
self.g_music_displayer = mpd.musicdisplayer.MusicDisplayer(utils.play_tone)
self.g_music_displayer.clear()
hbox.pack_start(self.g_music_displayer)
self.g_flashbar = gu.FlashBar()
self.g_flashbar.show()
self.practise_box.pack_start(self.g_flashbar, False)
hbox = gu.bHBox(self.practise_box, False)
hbox.set_homogeneous(True)
self.g_first_is_largest = gu.bButton(hbox, _("F_irst interval\nis largest"), lambda f, self=self: self.guess_answer(-1))
self.g_first_is_largest.get_child().set_justify(gtk.JUSTIFY_CENTER)
self.g_first_is_largest.set_sensitive(False)
self.g_equal_size = gu.bButton(hbox, _("The intervals\nare _equal"), lambda f, self=self: self.guess_answer(0))
self.g_equal_size.get_child().set_justify(gtk.JUSTIFY_CENTER)
self.g_equal_size.set_sensitive(False)
self.g_last_is_largest = gu.bButton(hbox, _("_Last interval\nis largest"), lambda f, self=self: self.guess_answer(1))
self.g_last_is_largest.set_sensitive(False)
self.g_last_is_largest.get_child().set_justify(gtk.JUSTIFY_CENTER)
self.g_new = gu.bButton(self.action_area, _("_New"), self.new_question)
self.g_repeat = gu.bButton(self.action_area, _("_Repeat"),
lambda w, self=self: self.m_t.play_question())
self.g_repeat.set_sensitive(False)
self.g_give_up = gu.bButton(self.action_area, _("_Give up"),
self.give_up)
self.g_give_up.set_sensitive(False)
self.action_area.set_homogeneous(True)
self.practise_box.show_all()
##############
# config_box #
##############
self._add_auto_new_question_gui(self.config_box)
# ----------------------------------------------
def pack_rdbs(box, callback):
D = {}
D['harmonic'] = b = gu.RadioButton(None, _("Harmonic"), callback)
b.set_data('idir', 'harmonic')
box.pack_start(b, False)
D['melodic'] = b = gu.RadioButton(b, _("Melodic"), callback)
b.set_data('idir', 'melodic')
box.pack_start(b, False)
return D
#---------
self.g_intervalconfig_box = gu.bVBox(self.config_box, False)
hbox = gu.bHBox(self.g_intervalconfig_box, False)
hbox.pack_start(gtk.Label(_("First interval:")), False,
padding=gu.PAD_SMALL)
self.g_rdbs = [pack_rdbs(hbox, self.update_first)]
self.g_first_interval_up = nIntervalCheckBox(self.m_exname,
'first_interval_up')
self.g_intervalconfig_box.pack_start(self.g_first_interval_up, False)
self.g_first_interval_down = nIntervalCheckBox(self.m_exname,
'first_interval_down')
self.g_intervalconfig_box.pack_start(self.g_first_interval_down, False)
#----------
hbox = gu.bHBox(self.g_intervalconfig_box, False)
hbox.pack_start(gtk.Label(_("Last interval:")), False,
padding=gu.PAD_SMALL)
self.g_rdbs.append (pack_rdbs(hbox, self.update_last))
self.g_last_interval_up = nIntervalCheckBox(self.m_exname,
'last_interval_up')
self.g_intervalconfig_box.pack_start(self.g_last_interval_up, False)
self.g_last_interval_down = nIntervalCheckBox(self.m_exname,
'last_interval_down')
self.g_intervalconfig_box.pack_start(self.g_last_interval_down, False)
#------------
s = self.get_string('first_interval_type')
if not s in ('harmonic', 'melodic'):
self.set_string('first_interval_type', 'harmonic')
self.g_rdbs[0][self.get_string('first_interval_type')].set_active(True)
self.update_first(self.g_rdbs[0][self.get_string('first_interval_type')])
s = self.get_string('last_interval_type')
if not s in ('harmonic', 'melodic'):
self.set_string('last_interval_type', 'harmonic')
self.g_rdbs[1][self.get_string('last_interval_type')].set_active(True)
self.update_last(self.g_rdbs[1][self.get_string('last_interval_type')])
self.config_box.show_all()
self.add_watch('first_interval_type', self._watch_1_cb)
self.add_watch('last_interval_type', self._watch_2_cb)
def _watch_1_cb(self, name):
self._ignore_events = 1
self.g_rdbs[0][self.get_string('first_interval_type')].set_active(1)
self.g_first_interval_down.set_sensitive(
self.get_string('first_interval_type') == 'melodic')
self._ignore_events = 0
def _watch_2_cb(self, name):
self._ignore_events = 1
self.g_rdbs[1][self.get_string('last_interval_type')].set_active(1)
self.g_last_interval_down.set_sensitive(
self.get_string('last_interval_type') == 'melodic')
self._ignore_events = 0
def update_first(self, button):
"""
Called when the type of interval is changed.
"""
if self._ignore_events:
return
self.set_string('first_interval_type', button.get_data('idir'))
self.g_first_interval_down.set_sensitive(button.get_data('idir') == 'melodic')
def update_last(self, button):
"""
Called when the type of interval has changed.
"""
if self._ignore_events:
return
self.set_string('last_interval_type', button.get_data('idir'))
self.g_last_interval_down.set_sensitive(button.get_data('idir') == 'melodic')
def guess_answer(self, g):
if self.m_t.q_status == self.QSTATUS_NO:
return
if self.m_t.q_status == self.QSTATUS_SOLVED:
if self.m_t.guess_answer(g):
self.g_flashbar.flash(_("Correct, but you have already solved this question"))
else:
self.g_flashbar.flash(_("Wrong, but you have already solved this question"))
return
if self.m_t.q_status != self.QSTATUS_GIVE_UP:
if self.m_t.guess_answer(g):
self.g_new.set_sensitive(True)
self.g_new.grab_focus()
self.show_intervals()
self.g_flashbar.flash(_("Correct"))
self.g_give_up.set_sensitive(False)
self.g_first_is_largest.set_sensitive(False)
self.g_equal_size.set_sensitive(False)
self.g_last_is_largest.set_sensitive(False)
else:
self.g_flashbar.flash(_("Wrong"))
if self.get_bool("config/auto_repeat_question_if_wrong_answer"):
self.m_t.play_question()
self.g_give_up.set_sensitive(True)
def give_up(self, widget=None):
if self.m_t.q_status == self.QSTATUS_WRONG:
self.m_t.give_up()
self.g_first_is_largest.set_sensitive(False)
self.g_equal_size.set_sensitive(False)
self.g_last_is_largest.set_sensitive(False)
self.g_give_up.set_sensitive(False)
if self.m_t.m_intervals[0] < self.m_t.m_intervals[1]:
s = _("Last interval is largest")
elif self.m_t.m_intervals[0] == self.m_t.m_intervals[1]:
s = _("The intervals are equal")
else:
s = _("First interval is largest")
self.g_flashbar.push(_("The answer is: %s") % s)
self.g_new.set_sensitive(True)
self.g_new.grab_focus()
self.show_intervals()
def show_intervals(self, widget=None):
tv = [self.get_string('first_interval_type'),
self.get_string('last_interval_type')]
clefs = {}
music = {}
for x in range(2):
music[x] = self.m_t.m_tonikas[x].get_octave_notename() + " " \
+ (self.m_t.m_tonikas[x] + mpd.Interval().set_from_int(self.m_t.m_intervals[x])).get_octave_notename()
clefs[x] = mpd.select_clef(music[x])
if tv[x] == 'harmonic':
music[x] = "< %s >" % music[x]
m = r"\staff{ \clef %s %s |" % (clefs[0], music[0])
if clefs[0] != clefs[1]:
m = m + r"\clef %s " % clefs[1]
m = m + music[1]
self.g_music_displayer.display(m,
self.get_int('config/feta_font_size=20'))
def new_question(self, widget=None):
self.g_music_displayer.clear()
q = self.m_t.new_question()
if q == Teacher.OK:
try:
self.m_t.play_question()
except Exception, e:
if not self.standard_exception_handler(e, self.m_t.end_practise):
raise
return
self.g_first_is_largest.set_sensitive(True)
self.g_first_is_largest.grab_focus()
self.g_equal_size.set_sensitive(True)
self.g_last_is_largest.set_sensitive(True)
self.g_new.set_sensitive(
not self.get_bool('config/picky_on_new_question'))
self.g_repeat.set_sensitive(True)
self.g_give_up.set_sensitive(False)
self.g_flashbar.clear()
elif q == Teacher.ERR_PICKY:
self.g_flashbar.flash(_("You have to solve this question first."))
else:
assert q == Teacher.ERR_CONFIGURE
self.g_flashbar.flash(_("You have to configure the exercise properly"))
def on_start_practise(self):
#
# This for loop is for backward compatability. These four
# variables are obsoleted!
for n in ('first_interval_up', 'first_interval_down',
'last_interval_up', 'last_interval_down'):
if n in self.m_t.m_P.header:
self.set_list(n, self.m_t.m_P.header[n])
if 'first_interval' in self.m_t.m_P.header:
self.set_list('first_interval_down',
[-n for n in self.m_t.m_P.header.first_interval if n < 0])
self.set_list('first_interval_up',
[n for n in self.m_t.m_P.header.first_interval if n > 0])
if 'last_interval' in self.m_t.m_P.header:
self.set_list('last_interval_down',
[-n for n in self.m_t.m_P.header.last_interval if n < 0])
self.set_list('last_interval_up',
[n for n in self.m_t.m_P.header.last_interval if n > 0])
self.m_t.m_custom_mode = \
'first_interval' not in self.m_t.m_P.header and \
'last_interval' not in self.m_t.m_P.header
for n in ('first_interval_type', 'last_interval_type'):
if n in self.m_t.m_P.header and \
self.m_t.m_P.header[n] in ('melodic', 'harmonic'):
self.set_string(n, self.m_t.m_P.header[n])
else:
self.set_string(n, 'harmonic')
self.g_flashbar.require_size([
_("The answer is: %s") % _("Last interval is largest"),
_("The answer is: %s") % _("First interval is largest"),
_("You have to solve this question first."),
_("You have to configure the exercise properly"),
])
self.g_flashbar.delayed_flash(self.short_delay,
_("Click 'New' to begin."))
self.g_new.grab_focus()
if self.m_t.m_custom_mode:
self.g_intervalconfig_box.show()
else:
self.g_intervalconfig_box.hide()
def on_end_practise(self):
self.m_t.end_practise()
self.g_first_is_largest.set_sensitive(False)
self.g_equal_size.set_sensitive(False)
self.g_last_is_largest.set_sensitive(False)
self.g_repeat.set_sensitive(False)
self.g_give_up.set_sensitive(False)
self.g_new.set_sensitive(True)
self.g_music_displayer.clear()
self.g_flashbar.clear()
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