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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/>.
from __future__ import division
import gtk, gobject
import abstract, gu
import lessonfile
class Teacher(abstract.Teacher, abstract.RhythmAddOnClass):
OK = 0
ERR_PICKY = 1
ERR_NO_ELEMS = 2
def __init__(self, exname, app):
abstract.Teacher.__init__(self, exname, app)
self.lessonfileclass = lessonfile.HeaderLessonfile
def play_question(self):
if self.q_status == self.QSTATUS_NO:
return
self.play_rhythm(self.get_music_string())
def guess_answer(self, a):
assert self.q_status in [self.QSTATUS_NEW, self.QSTATUS_WRONG]
v = []
for idx in range(len(self.m_question)):
v.append(self.m_question[idx] == a[idx])
if not [x for x in v if x == 0]:
self.q_status = self.QSTATUS_SOLVED
self.maybe_auto_new_question()
self.m_app.play_happy_sound()
return 1
else:
self.q_status = self.QSTATUS_WRONG
self.m_app.play_sad_sound()
class RhythmViewer(gtk.Frame):
def __init__(self, parent):
gtk.Frame.__init__(self)
self.set_shadow_type(gtk.SHADOW_IN)
self.g_parent = parent
self.g_box = gtk.HBox()
self.g_box.show()
self.g_box.set_spacing(gu.PAD_SMALL)
self.g_box.set_border_width(gu.PAD)
self.add(self.g_box)
self.m_data = []
# the number of rhythm elements the viewer is supposed to show
self.m_num_beats = 0
self.g_face = None
self.__timeout = None
def set_num_beats(self, i):
self.m_num_beats = i
def clear(self):
for child in self.g_box.get_children():
child.destroy()
self.m_data = []
def create_holders(self):
"""
create those |__| that represents one beat
"""
if self.__timeout:
gobject.source_remove(self.__timeout)
self.clear()
for x in range(self.m_num_beats):
self.g_box.pack_start(gu.create_png_image('holder'), False)
self.m_data = []
def clear_wrong_part(self):
"""When the user have answered the question, this method is used
to clear all but the first correct elements."""
# this assert is always true because if there is no rhythm element,
# then there is a rhythm holder ( |__| )
assert self.m_num_beats == len(self.g_parent.m_t.m_question)
self.g_face.destroy()
self.g_face = None
for n in range(self.m_num_beats):
if self.m_data[n] != self.g_parent.m_t.m_question[n]:
break
for x in range(n, len(self.g_box.get_children())):
self.g_box.get_children()[n].destroy()
self.m_data = self.m_data[:n]
for x in range(n, self.m_num_beats):
self.g_box.pack_start(gu.create_png_image('holder'), False)
def add_rhythm_element(self, i):
assert len(self.m_data) <= self.m_num_beats
if len(self.g_box.get_children()) >= self.m_num_beats:
self.g_box.get_children()[self.m_num_beats-1].destroy()
vbox = gtk.VBox()
vbox.show()
im = gu.create_rhythm_image(abstract.RhythmAddOnClass.RHYTHMS[i])
vbox.pack_start(im)
vbox.pack_start(gu.create_png_image('rhythm-wrong'), False, False)
vbox.get_children()[-1].hide()
self.g_box.pack_start(vbox, False)
self.g_box.reorder_child(vbox, len(self.m_data))
self.m_data.append(i)
def backspace(self):
if len(self.m_data) > 0:
if self.g_face:
self.g_box.get_children()[-2].destroy()
self.g_face.destroy()
self.g_face = None
self.g_box.get_children()[len(self.m_data)-1].destroy()
self.g_box.pack_start(gu.create_png_image('holder'), False)
del self.m_data[-1]
def mark_wrong(self, idx):
"""
Mark the rhythm elements that was wrong by putting the content of
graphics/rhythm-wrong.png (normally a red line) under the element.
"""
self.g_box.get_children()[idx].get_children()[1].show()
def len(self):
"return the number of rhythm elements currently viewed"
return len(self.m_data)
def sad_face(self):
l = gu.HarmonicProgressionLabel(_("Wrong"))
l.show()
self.g_box.pack_start(l, False)
self.g_face = gtk.EventBox()
self.g_face.connect('button_press_event', self.on_sadface_event)
self.g_face.show()
im = gtk.Image()
im.set_from_stock('solfege-sadface', gtk.ICON_SIZE_LARGE_TOOLBAR)
im.show()
self.g_face.add(im)
self.g_box.pack_start(self.g_face, False)
def happy_face(self):
l = gu.HarmonicProgressionLabel(_("Correct"))
l.show()
self.g_box.pack_start(l, False)
self.g_face = gtk.EventBox()
self.g_face.connect('button_press_event', self.on_happyface_event)
self.g_face.show()
im = gtk.Image()
im.set_from_stock('solfege-happyface', gtk.ICON_SIZE_LARGE_TOOLBAR)
im.show()
self.g_face.add(im)
self.g_box.pack_start(self.g_face, False)
def on_happyface_event(self, obj, event):
if event.type == gtk.gdk.BUTTON_PRESS and event.button == 1:
self.g_parent.new_question()
def on_sadface_event(self, obj, event):
if event.type == gtk.gdk.BUTTON_PRESS and event.button == 1:
self.clear_wrong_part()
def flash(self, s):
self.clear()
l = gtk.Label(s)
l.set_name("Feedback")
l.set_alignment(0.0, 0.5)
l.show()
self.g_box.pack_start(l, True, True)
lx, ly = l.size_request()
sx, sy = self.g_box.size_request()
self.g_box.set_size_request(max(lx + gu.PAD * 2, sx), max(ly + gu.PAD * 2, sy))
self.__timeout = gobject.timeout_add(2000, self.unflash)
def unflash(self, *v):
self.__timeout = None
self.clear()
class Gui(abstract.Gui, abstract.RhythmAddOnGuiClass):
num_buttons_in_row = 8
def __init__(self, teacher, window):
abstract.Gui.__init__(self, teacher, window)
self.m_key_bindings = {'backspace_ak': self.on_backspace}
self.g_answer_box = gu.NewLineBox()
self.practise_box.pack_start(self.g_answer_box, False)
#-------
hbox = gu.bHBox(self.practise_box)
b = gtk.Button(_("Play"))
b.show()
b.connect('clicked', self.play_users_answer)
hbox.pack_start(b, False, True)
self.practise_box.pack_start(gtk.HBox(), False,
padding=gu.PAD_SMALL)
self.g_rhythm_viewer = RhythmViewer(self)
#FIXME the value 52 is dependant on the theme used
self.g_rhythm_viewer.set_size_request(-1, 52)
self.g_rhythm_viewer.create_holders()
hbox.pack_start(self.g_rhythm_viewer)
#self.practise_box.pack_start(self.g_rhythm_viewer, False)
# action area
self.g_new = gu.bButton(self.action_area, _("_New"), self.new_question)
self.g_repeat = gu.bButton(self.action_area, _("_Repeat"), self.repeat_question)
self.g_repeat.set_sensitive(False)
self.g_show = gu.bButton(self.action_area, _("_Give up"), self.give_up)
self.g_show.set_sensitive(False)
self.g_backspace = gu.bButton(self.action_area, _("_Backspace"),
self.on_backspace)
self.g_backspace.set_sensitive(False)
self.practise_box.show_all()
##############
# config_box #
##############
self.add_select_elements_gui()
#--------
self.config_box.pack_start(gtk.HBox(), False,
padding=gu.PAD_SMALL)
self.add_select_num_beats_gui()
#-----
self.config_box.pack_start(gtk.HBox(), False,
padding=gu.PAD_SMALL)
#------
hbox = gu.bHBox(self.config_box, False)
hbox.set_spacing(gu.PAD_SMALL)
hbox.pack_start(gu.nCheckButton(self.m_exname,
"not_start_with_rest",
_("Don't start the question with a rest")), False)
sep = gtk.VSeparator()
hbox.pack_start(sep, False)
hbox.pack_start(gtk.Label(_("Beats per minute:")), False)
spin = gu.nSpinButton(self.m_exname, 'bpm',
gtk.Adjustment(60, 20, 240, 1, 10))
hbox.pack_start(spin, False)
self._add_auto_new_question_gui(self.config_box)
self.config_box.show_all()
def pngbutton(self, i):
"used by the constructor"
btn = gtk.Button()
if i > len(abstract.RhythmAddOnClass.RHYTHMS):
im = gtk.Image()
im.set_from_stock("gtk-missing-image", gtk.ICON_SIZE_LARGE_TOOLBAR)
im.show()
btn.add(im)
else:
btn.add(gu.create_rhythm_image(abstract.RhythmAddOnClass.RHYTHMS[i]))
btn.show()
btn.connect('clicked', self.guess_element, i)
return btn
def select_element_cb(self, button, element_num):
super(Gui, self).select_element_cb(button, element_num)
self.update_answer_buttons()
def on_backspace(self, widget=None):
if self.m_t.q_status == self.QSTATUS_SOLVED:
return
self.g_rhythm_viewer.backspace()
if not self.g_rhythm_viewer.m_data:
self.g_backspace.set_sensitive(False)
def play_users_answer(self, widget):
if self.g_rhythm_viewer.m_data:
rhythm = " ".join([abstract.RhythmAddOnClass.RHYTHMS[c] for c in self.g_rhythm_viewer.m_data])
self.m_t.play_rhythm(r"\staff{ %s }" % rhythm)
def guess_element(self, sender, i):
if self.m_t.q_status == self.QSTATUS_NO:
self.g_rhythm_viewer.flash(_("Click 'New' to begin."))
return
if self.m_t.q_status == self.QSTATUS_SOLVED:
return
if self.g_rhythm_viewer.len() == len(self.m_t.m_question):
self.g_rhythm_viewer.clear_wrong_part()
self.g_backspace.set_sensitive(True)
self.g_rhythm_viewer.add_rhythm_element(i)
if self.g_rhythm_viewer.len() == len(self.m_t.m_question):
if self.m_t.guess_answer(self.g_rhythm_viewer.m_data):
self.g_rhythm_viewer.happy_face()
self.g_new.set_sensitive(True)
self.g_new.grab_focus()
self.g_backspace.set_sensitive(False)
self.g_show.set_sensitive(False)
else:
v = []
for idx in range(len(self.m_t.m_question)):
v.append(self.m_t.m_question[idx] == self.g_rhythm_viewer.m_data[idx])
for x in range(len(v)):
if not v[x]:
self.g_rhythm_viewer.mark_wrong(x)
self.g_rhythm_viewer.sad_face()
def new_question(self, widget=None):
g = self.m_t.new_question()
if g == self.m_t.OK:
self.g_first_rhythm_button.grab_focus()
self.g_rhythm_viewer.set_num_beats(self.get_int('num_beats'))
self.g_rhythm_viewer.create_holders()
self.g_show.set_sensitive(True)
self.g_repeat.set_sensitive(True)
try:
self.m_t.play_question()
except Exception, e:
if not self.standard_exception_handler(e, self.on_end_practise):
raise
return
self.g_new.set_sensitive(
not self.get_bool('config/picky_on_new_question'))
elif g == self.m_t.ERR_PICKY:
self.g_rhythm_viewer.flash(_("You have to solve this question first."))
else:
assert g == self.m_t.ERR_NO_ELEMS
self.g_repeat.set_sensitive(False)
self.g_rhythm_viewer.flash(_("You have to configure this exercise properly"))
def repeat_question(self, *w):
self.m_t.play_question()
self.g_first_rhythm_button.grab_focus()
def update_answer_buttons(self):
"""
(Re)create the buttons needed to answer the questions.
We recreate the buttons for each lesson file because the
header may specify a different set of rhythm elements to use.
"""
self.g_answer_box.empty()
self.g_first_rhythm_button = None
for n in self.m_t.m_P.header.visible_rhythm_elements:
if n == 'newline':
self.g_answer_box.newline()
else:
b = self.pngbutton(n)
if not self.g_first_rhythm_button:
self.g_first_rhythm_button = b
self.g_answer_box.add_widget(b)
self.g_answer_box.show_widgets()
def on_start_practise(self):
assert self.m_t.m_P
self.m_t.m_custom_mode = bool(self.m_t.m_P.header.configurable_rhythm_elements)
self.m_t.set_elements_variables()
self.update_answer_buttons()
if self.m_t.m_custom_mode:
self.update_select_elements_buttons()
self.g_element_frame.show()
else:
self.g_element_frame.hide()
if 'lesson_heading' in self.m_t.m_P.header:
self.set_lesson_heading(self.m_t.m_P.header.lesson_heading)
else:
self.set_lesson_heading(_("Identify the rhythm"))
self.m_t.set_default_header_values()
if 'not_start_with_rest' in self.m_t.m_P.header:
self.m_t.set_bool('not_start_with_rest', self.m_t.m_P.header.not_start_with_rest)
self.g_rhythm_viewer.flash(_("Click 'New' to begin."))
self.g_new.grab_focus()
def on_end_practise(self):
self.m_t.end_practise()
self.g_new.set_sensitive(True)
self.g_repeat.set_sensitive(False)
self.g_show.set_sensitive(False)
self.g_rhythm_viewer.create_holders()
def give_up(self, widget=None):
if self.m_t.q_status == self.QSTATUS_NO:
return
self.g_rhythm_viewer.clear()
for i in self.m_t.m_question:
self.g_rhythm_viewer.add_rhythm_element(i)
self.m_t.q_status = self.QSTATUS_SOLVED
self.g_new.set_sensitive(True)
self.g_new.grab_focus()
self.g_show.set_sensitive(False)
self.g_backspace.set_sensitive(False)
|