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#! -*- coding: utf-8 -*-
#(c) Stefan Heher 2009
#1234567890123456789012345678901234567890123456789012345678901234567890123456789
import gtk
import pygtk
import pango
import time
import gobject
from timer import Timer
from sugar import profile
from sugar.graphics import style
from sugar.activity import activity
class Display:
"""
Definition and manipulation of all GUI-elemts.
Exception (redesign?): def define_buttons in classes derived from Exercise.
"""
print("in display, class definition")
def __init__(self, window):
self._permanent_gui_elements(window)
self.errors = 0
self._ex = None # needed for feedback_table etc
# TODO: imprive information hiding
self._sett = None # setting updated by callbacks during input
self.running = False # switch settings_/feedback_table TODO rename
self._coll_key = None # semaphore for self.finish_collect_callback
# and Collection.select_exerc_callback
self._testvar = 'FOUND'
def register(self, sess, co, learner):
"""register _after_ Session and Coach have been instantiated"""
self._sess = sess
self._co = co
self._learner = learner
def _permanent_gui_elements(self, window):
# The display is partitioned as follows
#
# table:
# 0 1 2
#0+-------------------------+------------------------+
# | | |
#1| | OVERLAYS OF |
# | scrolled_window | collection_table |
#2| | OR |
# | | settings_table |
#3+-------------------------+ OR |
# | | feedback_table |
#4| empty for calcs etc | |
# | | |
#5+-------------------------+------------------------+
self.main_window = window # Save the sugar main window
# whole window with 5 lines and 2 columns
self.table = gtk.Table(5, 2, True)
self.main_window.set_canvas(self.table)
self.log_buffer = gtk.TextBuffer()
self.tag_table = self.log_buffer.get_tag_table()
self.error_tag = gtk.TextTag("error") # tag for errors
self.error_tag.set_property("foreground", "blue")
self.tag_table.add(self.error_tag)
self.correct_tag = gtk.TextTag("correct")# tag for correct calcs
self.correct_tag.set_property("foreground", "green")
self.tag_table.add(self.correct_tag)
# Create a log_view with the previously created log_buffer
self.log_view = gtk.TextView(self.log_buffer)
# Set the font size for the log_view
self.log_view.modify_font(pango.FontDescription('sans bold 14'))
self.log_view.set_editable(False)
self.log_view.set_cursor_visible(False)
self.log_view.set_justification(gtk.JUSTIFY_CENTER)
self.scrolled_window = gtk.ScrolledWindow() # for the log_view
self.scrolled_window.set_policy(gtk.POLICY_AUTOMATIC,
gtk.POLICY_AUTOMATIC)
# Connect log_view and scrolled window
self.scrolled_window.add(self.log_view)
# Insert the log_view into the upper half
self.table.attach(self.scrolled_window, 0, 1, 0, 3)
self.log_view.show()
self.scrolled_window.show()
# 3 tables as overlays with same 15 lines and 6 columns
self.settings_table = gtk.Table (14, 9, True)
self.collection_table = gtk.Table(14, 9, True)
self.feedback_table = gtk.Table (14, 9, True)
# Insert the 3 tables into the right half of the screen
self.table.attach(self.settings_table, 1, 2, 0, 5)
self.table.attach(self.collection_table,1, 2, 0, 5)
self.table.attach(self.feedback_table, 1, 2, 0, 5)
# show all tables, scrolled_window already shown above
self.settings_table_show() # treat uniformly <>!
self.collection_table.show() # treat uniformly !
self.feedback_table.show() # treat uniformly !
self.table.show() # since all other tables have been inserted
def update_time(self):
minutes, seconds = divmod(self.stopwatch.elapsed, 60)
if(minutes < 10 and seconds < 10):
time = "0" + str(int(minutes)) + ":" + "0" + str(int(seconds))
if(minutes > 9 and seconds > 9):
time = str(int(minutes)) + ":" + str(int(seconds))
if(minutes > 9 and seconds < 10):
time = str(int(minutes)) + ":" + "0" + str(int(seconds))
if(minutes < 10 and seconds > 10):
time = "0" + str(int(minutes)) + ":" + str(int(seconds))
self.stopwatch_label.set_label(time)
self.stopwatch_label.queue_draw()
return True
def settings_table_show(self): # rename to .._permanent
""" Initialize all permanent gui-elements in settings_table. """
# button releasing settings_table and coach.notify('setting-done',..)
self.see_butt = gtk.Button(None, gtk.STOCK_GO_FORWARD)
self.see_butt.connect("clicked", self.release_sett_callback)
#self.settings_table.attach(self.see_butt, 0, 5, 14, 15)
self.settings_table.attach(self.see_butt, 0, 8, 13, 14)
self.see_alignment = self.see_butt.get_children()[0]
self.see_hbox = self.see_alignment.get_children()[0]
self.see_image, self.see_label = self.see_hbox.get_children()
self.see_label.set_label("settings_table")
self.see_butt.show()
# button switching from settings_table to collect_table
self.sec_butt = gtk.Button("")
self.sec_butt.connect("clicked", self.switch_setts_to_coll_callback)
#self.settings_table.attach(self.sec_butt, 5, 6, 14, 15)
self.settings_table.attach(self.sec_butt, 8, 9, 13, 14)
self.sec_alignment = self.sec_butt.get_children()[0]
self.sec_butt.show()
def switch_setts_to_coll_callback(self, widget):
""" Switch from settings_table to collection_table. """
self.settings_table.hide()
self.collection_table.show()
def feedback_table_show(self):
"""RENAME to draw_feedback_screen"""
# Section for stopwatch
self.stopwatch = Timer()
self.stopwatch_label = gtk.Label("00:00")
self.stopwatch_label.modify_font(pango.FontDescription("sans 16"))
#self.feedback_table.attach(self.stopwatch_label, 3, 5, 12, 13)
self.feedback_table.attach(self.stopwatch_label, 4, 6, 12, 13)
# Section for nickname
self.name = profile.get_nick_name()
self.name_label = gtk.Label(self.name)
self.name_label.modify_font(pango.FontDescription("sans 16"))
#self.feedback_table.attach(self.name_label, 0, 6, 13, 14)
self.feedback_table.attach(self.name_label, 0, 9, 13, 14)
# Section for progress bar
self.progressbar = gtk.ProgressBar(adjustment=None)
# Color for progress bar
style = self.progressbar.get_style()
style.bg[gtk.STATE_PRELIGHT] = gtk.gdk.color_parse("green")
self.progressbar.set_style (style)
self.progressbar.set_fraction(0)
self.feedback_table.attach(self.progressbar, 0, 9, 8, 9)
# Labels for progress bar
self.progress0 = gtk.Label("0")
self.progress0.modify_font(pango.FontDescription("sans 16"))
self.feedback_table.attach(self.progress0, 0, 1, 9, 10 )
# Labels for status update
self.correct_count = 0
self.correct_counter = gtk.Label(str(self.correct_count))
self.correct_counter.modify_font(pango.FontDescription("sans 16"))
# Ugly code for label color
attr = pango.AttrList()
fg_color = pango.AttrForeground(0, 65535, 0, 0, 6)
attr.insert(fg_color)
self.correct_counter.set_attributes(attr)
#self.feedback_table.attach(self.correct_counter, 2, 4, 9, 10 )
self.feedback_table.attach(self.correct_counter, 3, 5, 9, 10 )
self.false_count = 0
self.false_counter = gtk.Label(str(self.false_count))
self.false_counter.modify_font(pango.FontDescription("sans 16"))
# Ugly code for label color
attr = pango.AttrList()
fg_color = pango.AttrForeground(0, 0, 65535, 0, 6)
attr.insert(fg_color)
self.false_counter.set_attributes(attr)
#self.feedback_table.attach(self.false_counter, 2, 4, 10, 11 )
self.feedback_table.attach(self.false_counter, 3, 5, 10, 11 )
self.stopwatch_label.show()
gobject.timeout_add(1000, self.update_time)
self.name_label.show()
self.progressbar.show()
self.progress0.show()
self.correct_counter.show()
self.false_counter.show()
self.total_calcs = self._ex.count()
self.progress_total = gtk.Label(str(self.total_calcs))
self.progress_total.modify_font(pango.FontDescription("sans 16"))
#self.feedback_table.attach(self.progress_total, 5, 6, 9, 10 )
self.feedback_table.attach(self.progress_total, 8, 9, 9, 10 )
self.progress_total.show()
self.sfb_butt = gtk.Button(None, gtk.STOCK_STOP)
self.sfb_butt.connect("clicked", self.release_feedb_callback)
self.feedback_table.attach(self.sfb_butt, 0, 9, 13, 14)
self.sfb_alignment = self.sfb_butt.get_children()[0]
self.sfb_hbox = self.sfb_alignment.get_children()[0]
self.sfb_image, self.sfb_label = self.sfb_hbox.get_children()
self.sfb_label.set_label("feedback_table")
self.sfb_butt.show()
def feedback_table_hide(self):
self.progressbar.set_fraction(0)
self.stopwatch_label.hide()
self.name_label.hide()
self.progressbar.hide()
self.progress0.hide()
self.correct_counter.hide()
self.false_counter.hide()
self.progress_total.hide()
self.sfb_butt.hide()
def offer_setting(self,ex):
""" Prepare display for update of settings. """
self._ex = ex #WN.LV either drop this or self.current_exercise
self._sett = self._ex.get_setting() #WN.LV make _sett local
self.current_exercise = ex #WN.LV either drop this or self._ex
print('in display.offer_setting, topic=', self._sett['topic'])
self.current_exercise.define_buttons()
self.current_exercise.set_buttons(self._sett)
self.settings_table.show()
def release_feedb_callback(self, widget):
""" """
self.protocol('----------------------------------------', 0, 'OK')
print('in display.release_feedb_callback')
self.calc_table.destroy()
self.feedback_table_hide()
self.collection_table.show() # from here the next user-interactions
def release_sett_callback(self, widget):
""" Start calcs with these settings (probably updated). """
print('in display.release_sett_callback')
self._co.settings_done(self._ex._sett)
self.settings_table.hide()
#self.collection_table.hide()
self.feedback_table_show()
def init_calc(self):
"""
prepares for calculations from 1 setting.
for instance, a calculation might be on 1 ore more lines.
"""
print("in display.init_calc")
# make empty lines such that all calcs are entered at bottom
for i in range(1,21):
end_iterator = self.log_buffer.get_end_iter()
self.log_buffer.insert(end_iterator, "\n")
self.log_view.scroll_mark_onscreen(self.log_buffer.get_insert())
def destroy_box(self):
self.calculation_box.destroy()
def protocol(self, full_line, errors, feedback):
end_iterator = self.log_buffer.get_end_iter()
if( feedback == 'OK' ):
self.log_buffer.insert_with_tags_by_name(end_iterator, "\n" + full_line, "correct" )
elif ( feedback == 'XXX' ):
self.log_buffer.insert_with_tags_by_name(end_iterator, "\n" + full_line, "error" )
end_iterator = self.log_buffer.get_end_iter()
mark = self.log_buffer.create_mark(None, end_iterator, True)
self.log_view.scroll_mark_onscreen(mark)
def protocol_generated_calcs(self, calculations, change):
print("DEBUG: in display.protocol_generated_calcs")
end_iterator = self.log_buffer.get_end_iter()
self.log_buffer.insert_with_tags_by_name(end_iterator, "\n---------- " + change + " ----------" , "fixxxme!" )
for c in calculations:
end_iterator = self.log_buffer.get_end_iter()
#['1', '-', '1', '=', '0']
to_format = c[0]
printable_calc = to_format[0] + " " + \
to_format[1] + " " + \
to_format[2] + " " + \
to_format[3] + " " + \
to_format[4]
self.log_buffer.insert_with_tags_by_name(end_iterator, "\n" + printable_calc, "fixxxme!" )
mark = self.log_buffer.create_mark(None, end_iterator, True)
self.log_view.scroll_mark_onscreen(mark)
def input_digit(self, widget, dig, proterr, protok):
"""callback: input a digit and give feedback.
The _only_ other active widget is the <stop>-button on the right"""
entry_text = widget.get_text()
### bitte anzeigen !???????
if(entry_text == dig):
self.errors = 0 #WN090518 ???
self.protocol(protok, self.errors, 'OK')
self.destroy_box()
self._learner.digit_done()
elif(entry_text == ""):
pass #otherwise feedback in protocol written twice: see entry.set_text("") below
else:
self.false_count = self.false_count + 1
self.false_counter.set_text(str(self.false_count))
self.errors = self.errors + 1
widget.set_text("")
self.protocol(proterr, self.errors, 'XXX')
#WN090518
def display_calc(self, lines):
self.calc_table = gtk.Table(5, 1, True)
self.table.attach(self.calc_table, 0, 1, 0, 5)
self.calc_table.show()
"""display the lines of a calc with _ at all input positions"""
lino = 0
for li in lines:
#print('in Display.display_calc, line=', li)
self.create_entryline((lino, -1, 'dummy-dig', 'dummy-proterr', 'dummy-protok', li))
lino = lino + 1
def create_entryline(self, (lineno, linepos, dig, proterr, protok, line)):
"""create gtk.Entry in line at linepos and set callback_input_digit"""
#print('in Display.create_entryline: lineno=', lineno, ', linepos=',
# linepos, ', line=', line)
calculation, cursor = line, linepos
self.calculation_box = gtk.HBox(True, 0)
calc_pos = 0
self.calc_table.attach(self.calculation_box, 0, 1, 3 + lineno, 4 + lineno)
for i in calculation:
if (calc_pos != cursor):
self.label = gtk.Label(i)
self.label.modify_font(pango.FontDescription("sans 24"))
self.calculation_box.pack_start(self.label)
self.label.show()
else: # prepare for input
self.text_entry = gtk.Entry(max = 1)
self.text_entry.modify_font(pango.FontDescription("sans 24"))
self.text_entry.connect("changed", self.input_digit, dig, proterr, protok)
self.calculation_box.pack_start(self.text_entry)
self.text_entry.show()
calc_pos = calc_pos + 1
#?kann m.die calculation_box ZUERST aufbauen und DANN self.table.attach
self.calculation_box.show()
if(cursor != -1):
self.text_entry.grab_focus()
#just add lineno to table.attach
#TODO rename calculation, cursor below ...
#TODO remove hack on callback:
#self.input_digit('widget', dig, protline)
def finish_calc(self):
self.stopwatch.stop()
def show_progress(self):
self.progressbar.set_fraction(self.progressbar.get_fraction()+(float(1)/float(self.total_calcs)))
self.correct_count = self.correct_count + 1
self.correct_counter.set_text(str(self.correct_count))
self.calc_table.destroy()
def offer_coll_to_learner(self, collect):
"""TODO: get the users choice from buttons above the settings"""
collect.define_coll_gui()
collect.set_coll_gui(collect) # sets callbacks
self.set_coll_to_learner() # set finish_learner_coll_butt + callb
def switch_exercise(self):
""" Another exercise has been selected. """
#WN091215 DAS IST AB JETZT FALSCH: ex<->sett + ex<->coll moeglich
self.settings_table.destroy()
self.settings_table = gtk.Table(14, 9, True)
self.table.attach(self.settings_table, 1, 2, 0, 5)
self.settings_table.show()
self.feedback_table.destroy()
self.feedback_table = gtk.Table(14, 9, True)
self.table.attach(self.feedback_table, 1, 2, 0, 5)
self.feedback_table.show()
def set_select_exerc_semaphore(self, coll_key):
""" Sets a semaphore for finish_collect_callback. """
print('in display.set_select_exerc_semaphore, coll_key', self._coll_key)
self._coll_key = coll_key
def set_coll_to_learner(self):
""" Set the permanent gui-elements for collection_table. """
print('in display.set_coll_to_learner')
# button switching from collect_table to calcs
self.flc_butt = gtk.Button(None, gtk.STOCK_GO_FORWARD)
self.flc_butt.connect("clicked", self.finish_learner_coll_callback)
self.collection_table.attach(self.flc_butt, 0, 8, 13, 14)
self.flc_alignment = self.flc_butt.get_children()[0]
self.flc_hbox = self.flc_alignment.get_children()[0]
self.flc_image, self.flc_label = self.flc_hbox.get_children()
self.flc_label.set_label("to calcs")
self.flc_butt.show()
# button switching from collect_table to settings_table
self.sts_butt = gtk.Button("")
self.sts_butt.connect("clicked", self.switch_learner_to_setts)
self.collection_table.attach(self.sts_butt, 8, 9, 13, 14)
self.sts_alignment = self.sts_butt.get_children()[0]
self.sts_butt.show()
def finish_learner_coll_callback(self, widget):
""" Callback on flc_butt; uses self._coll_key as semaphore
from Collection.select_exerc_callback. """
print('in display.finish_learner_coll_callback, _coll_key=', self._coll_key)
if not(self._coll_key is None):
self._co.exercise_selected(self._coll_key)
self.collection_table.hide()
self.feedback_table_show()
def switch_learner_to_setts(self, widget):
""" Callback on sts_butt. asks the Coach if allowed. """
self._co.switch_to_settings(self._coll_key)
self.collection_table.hide()
def set_curr_exerc(self, exerc):
""" self._ex is needed for feedback_table etc. """
self._ex = exerc
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