def __init__(self, canvas, path, parent=None, sugar=True):
""" Handle launch from both within and without of Sugar environment. """
self.SLIDES = {'C':[C_slide_generator], 'CI':[CI_slide_generator],
'A':[A_slide_generator], 'K':[K_slide_generator],
'S':[S_slide_generator], 'T':[T_slide_generator],
'L':[L_slide_generator], 'LLn':[LLn_slide_generator],
'Log':[Log_slide_generator],
'custom':[Custom_slide_generator]}
self.STATORS = {'D':[D_stator_generator], 'DI':[DI_stator_generator],
'B':[B_stator_generator], 'K2':[K_stator_generator],
'S2':[S_stator_generator], 'T2':[T_stator_generator],
'L2':[L_stator_generator],
'LLn2':[LLn_stator_generator],
'Log2':[Log_stator_generator],
'custom2':[Custom_stator_generator]}
self.path = path
self.sugar = sugar
self.canvas = canvas
self.parent = parent
parent.show_all()
self.canvas.add_events(Gdk.EventMask.BUTTON_PRESS_MASK)
self.canvas.add_events(Gdk.EventMask.BUTTON_RELEASE_MASK)
self.canvas.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.canvas.add_events(Gdk.EventMask.KEY_PRESS_MASK)
self.canvas.connect("draw", self.__draw_cb)
self.canvas.connect("button-press-event", self._button_press_cb)
self.canvas.connect("button-release-event", self._button_release_cb)
self.canvas.connect("motion-notify-event", self._mouse_move_cb)
self.canvas.connect("key-press-event", self._keypress_cb)
self.canvas.set_can_focus(True)
self.canvas.grab_focus()
self.width = Gdk.Screen.width()
self.height = Gdk.Screen.height() - GRID_CELL_SIZE
self.sprites = Sprites(self.canvas)
self.slides = []
self.stators = []
self.scale = 1
locale.setlocale(locale.LC_NUMERIC, '')
self.decimal_point = locale.localeconv()['decimal_point']
if self.decimal_point == '' or self.decimal_point is None:
self.decimal_point = '.'
self.error_msg = None
self.result_function = [None, None]
self.label_function = [None, None]
_logger.debug("creating slides, stators, and reticule")
self.result_label = Stator(self.sprites, self.path, 'label',
int((self.width - 600) / 2),
SCREENOFFSET + 4 * SHEIGHT,
800, SHEIGHT)
for slide in self.SLIDES:
self.make_slide(slide, SLIDE)
for stator in self.STATORS:
self.make_slide(stator, STATOR)
self.reticule = Reticule(self.sprites, self.path, 'reticule',
150, SCREENOFFSET + SHEIGHT, 100, 2 * SHEIGHT)
self.reticule.draw(2000)
self.press = None
self.last = None
self.dragpos = 0
# We need textviews for keyboard input from the on-screen keyboard
self._set_screen_dpi()
font_desc = Pango.font_description_from_string('12')
self.text_entries = []
self.text_buffers = []
w = self.reticule.tabs[0].spr.label_safe_width()
h = int(self.reticule.tabs[0].spr.label_safe_height() / 2)
for i in range(4): # Reticule top & bottom; Slider left & right
self.text_entries.append(Gtk.TextView())
self.text_entries[-1].set_justification(Gtk.Justification.CENTER)
self.text_entries[-1].set_pixels_above_lines(4)
''' Not necessary (and doesn't work on OS8)
self.text_entries[-1].override_background_color(
Gtk.StateType.NORMAL, Gdk.RGBA(0, 0, 0, 0))
'''
self.text_entries[-1].modify_font(font_desc)
self.text_buffers.append(self.text_entries[-1].get_buffer())
self.text_entries[-1].set_size_request(w, h)
self.text_entries[-1].show()
self.parent.fixed.put(self.text_entries[-1], 0, 0)
self.parent.fixed.show()
self.text_entries[-1].connect('focus-out-event',
self._text_focus_out_cb)
self.reticule.add_textview(self.text_entries[0], i=BOTTOM)
self.reticule.add_textview(self.text_entries[1], i=TOP)
self.reticule.set_fixed(self.parent.fixed)
for slide in self.slides:
slide.add_textview(self.text_entries[2], i=LEFT)
slide.add_textview(self.text_entries[3], i=RIGHT)
slide.set_fixed(self.parent.fixed)
if not self.sugar:
self.update_textview_y_offset(self.parent.menu_height)
self.active_slide = self.name_to_slide('C')
self.active_stator = self.name_to_stator('D')
self.update_slide_labels()
self.update_result_label()
class SlideRule():
def __init__(self, canvas, path, parent=None, sugar=True):
""" Handle launch from both within and without of Sugar environment. """
self.SLIDES = {'C':[C_slide_generator], 'CI':[CI_slide_generator],
'A':[A_slide_generator], 'K':[K_slide_generator],
'S':[S_slide_generator], 'T':[T_slide_generator],
'L':[L_slide_generator], 'LLn':[LLn_slide_generator],
'Log':[Log_slide_generator],
'custom':[Custom_slide_generator]}
self.STATORS = {'D':[D_stator_generator], 'DI':[DI_stator_generator],
'B':[B_stator_generator], 'K2':[K_stator_generator],
'S2':[S_stator_generator], 'T2':[T_stator_generator],
'L2':[L_stator_generator],
'LLn2':[LLn_stator_generator],
'Log2':[Log_stator_generator],
'custom2':[Custom_stator_generator]}
self.path = path
self.sugar = sugar
self.canvas = canvas
self.parent = parent
parent.show_all()
self.canvas.add_events(Gdk.EventMask.BUTTON_PRESS_MASK)
self.canvas.add_events(Gdk.EventMask.BUTTON_RELEASE_MASK)
self.canvas.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.canvas.add_events(Gdk.EventMask.KEY_PRESS_MASK)
self.canvas.connect("draw", self.__draw_cb)
self.canvas.connect("button-press-event", self._button_press_cb)
self.canvas.connect("button-release-event", self._button_release_cb)
self.canvas.connect("motion-notify-event", self._mouse_move_cb)
self.canvas.connect("key-press-event", self._keypress_cb)
self.canvas.set_can_focus(True)
self.canvas.grab_focus()
self.width = Gdk.Screen.width()
self.height = Gdk.Screen.height() - GRID_CELL_SIZE
self.sprites = Sprites(self.canvas)
self.slides = []
self.stators = []
self.scale = 1
locale.setlocale(locale.LC_NUMERIC, '')
self.decimal_point = locale.localeconv()['decimal_point']
if self.decimal_point == '' or self.decimal_point is None:
self.decimal_point = '.'
self.error_msg = None
self.result_function = [None, None]
self.label_function = [None, None]
_logger.debug("creating slides, stators, and reticule")
self.result_label = Stator(self.sprites, self.path, 'label',
int((self.width - 600) / 2),
SCREENOFFSET + 4 * SHEIGHT,
800, SHEIGHT)
for slide in self.SLIDES:
self.make_slide(slide, SLIDE)
for stator in self.STATORS:
self.make_slide(stator, STATOR)
self.reticule = Reticule(self.sprites, self.path, 'reticule',
150, SCREENOFFSET + SHEIGHT, 100, 2 * SHEIGHT)
self.reticule.draw(2000)
self.press = None
self.last = None
self.dragpos = 0
# We need textviews for keyboard input from the on-screen keyboard
self._set_screen_dpi()
font_desc = Pango.font_description_from_string('12')
self.text_entries = []
self.text_buffers = []
w = self.reticule.tabs[0].spr.label_safe_width()
h = int(self.reticule.tabs[0].spr.label_safe_height() / 2)
for i in range(4): # Reticule top & bottom; Slider left & right
self.text_entries.append(Gtk.TextView())
self.text_entries[-1].set_justification(Gtk.Justification.CENTER)
self.text_entries[-1].set_pixels_above_lines(4)
''' Not necessary (and doesn't work on OS8)
self.text_entries[-1].override_background_color(
Gtk.StateType.NORMAL, Gdk.RGBA(0, 0, 0, 0))
'''
self.text_entries[-1].modify_font(font_desc)
self.text_buffers.append(self.text_entries[-1].get_buffer())
self.text_entries[-1].set_size_request(w, h)
self.text_entries[-1].show()
self.parent.fixed.put(self.text_entries[-1], 0, 0)
self.parent.fixed.show()
self.text_entries[-1].connect('focus-out-event',
self._text_focus_out_cb)
self.reticule.add_textview(self.text_entries[0], i=BOTTOM)
self.reticule.add_textview(self.text_entries[1], i=TOP)
self.reticule.set_fixed(self.parent.fixed)
for slide in self.slides:
slide.add_textview(self.text_entries[2], i=LEFT)
slide.add_textview(self.text_entries[3], i=RIGHT)
slide.set_fixed(self.parent.fixed)
if not self.sugar:
self.update_textview_y_offset(self.parent.menu_height)
self.active_slide = self.name_to_slide('C')
self.active_stator = self.name_to_stator('D')
self.update_slide_labels()
self.update_result_label()
def update_textview_y_offset(self, dy):
''' Need to account for menu height in GNOME '''
self.reticule.tabs[0].textview_y_offset += dy
self.reticule.tabs[1].textview_y_offset += dy
for slide in self.slides:
slide.tabs[0].textview_y_offset += dy
slide.tabs[1].textview_y_offset += dy
def _text_focus_out_cb(self, widget=None, event=None):
''' One of the four textviews was in focus '''
i = None
if widget in self.text_entries:
i = self.text_entries.index(widget)
bounds = self.text_buffers[i].get_bounds()
text = self.text_buffers[i].get_text(bounds[0], bounds[1], True)
text = text.strip()
self._process_numeric_input(i, text)
def _set_screen_dpi(self):
dpi = _get_screen_dpi()
font_map_default = PangoCairo.font_map_get_default()
font_map_default.set_resolution(dpi)
def __draw_cb(self, canvas, cr):
self.sprites.redraw_sprites(cr=cr)
# Handle the expose-event by drawing
def do_expose_event(self, event):
# Create the cairo context
cr = self.canvas.window.cairo_create()
print 'set cr in do_expose'
self.sprites.set_cairo_context(cr)
# Restrict Cairo to the exposed area; avoid extra work
cr.rectangle(event.area.x, event.area.y,
event.area.width, event.area.height)
cr.clip()
# Refresh sprite list
self.sprites.redraw_sprites(cr=cr)
def _destroy_cb(self, win, event):
Gtk.main_quit()
def _keypress_cb(self, area, event):
""" Keypress: moving the slides with the arrow keys """
k = Gdk.keyval_name(event.keyval)
if not self.sugar:
return
if k == 'a':
self.parent.show_a()
elif k == 'k':
self.parent.show_k()
elif k in ['c', 'asterisk', 'x']:
self.parent.show_c()
elif k in ['i', '/']:
self.parent.show_ci()
elif k == 's':
self.parent.show_s()
elif k == 't':
self.parent.show_t()
elif k in ['l', 'plus']:
self.parent.show_l()
elif k in ['Left', 'less']:
if self.last is not None:
self._move_slides(self.last, -1)
elif k in ['Right', 'greater']:
if self.last is not None:
self._move_slides(self.last, 1)
elif k in ['Home', 'Pause', 'Up', '^']:
self._move_slides(self.name_to_stator('D').spr,
- self.name_to_stator('D').spr.get_xy()[0])
elif k == 'r':
self.reticule.move(150, self.reticule.spr.get_xy()[1])
self.update_slide_labels()
self.update_result_label()
elif k in ['Down', 'v']:
self.parent.realign_cb()
self.reticule.move(150, self.reticule.spr.get_xy()[1])
self.update_slide_labels()
self.update_result_label()
return True
def _process_numeric_input(self, i, text):
try:
n = float(text.replace(self.decimal_point, '.'))
if i == 0:
self._move_reticule_to_stator_value(n)
elif i == 1:
self._move_reticule_to_slide_value(n)
elif i == 2:
self._move_slide_to_stator_value(n)
elif i == 3:
self._move_slide_to_stator_value(self._left_from_right(n))
except ValueError:
self.result_label.spr.labels[0] = _('NaN') + ' ' + text
return
def _process_text_field(self, text_field):
""" Process input from numeric text fields: could be a function. """
try:
my_min = "def f(): return " + text_field.replace('import','')
userdefined = {}
exec my_min in globals(), userdefined
return userdefined.values()[0]()
except OverflowError, e:
self.result_label.spr.labels[0] = _('Overflow Error') + \
': ' + str(e)
self.result_label.draw(1000)
except NameError, e:
self.result_label.spr.labels[0] = _('Name Error') + ': ' + str(e)
self.result_label.draw(1000)
class SlideRule():
def __init__(self, canvas, path, parent=None, sugar=True):
""" Handle launch from both within and without of Sugar environment. """
self.SLIDES = {
'C': [C_slide_generator],
'CI': [CI_slide_generator],
'A': [A_slide_generator],
'K': [K_slide_generator],
'S': [S_slide_generator],
'T': [T_slide_generator],
'L': [L_slide_generator],
'LLn': [LLn_slide_generator],
'Log': [Log_slide_generator],
'custom': [Custom_slide_generator]
}
self.STATORS = {
'D': [D_stator_generator],
'DI': [DI_stator_generator],
'B': [B_stator_generator],
'K2': [K_stator_generator],
'S2': [S_stator_generator],
'T2': [T_stator_generator],
'L2': [L_stator_generator],
'LLn2': [LLn_stator_generator],
'Log2': [Log_stator_generator],
'custom2': [Custom_stator_generator]
}
self.path = path
self.sugar = sugar
self.canvas = canvas
self.parent = parent
parent.show_all()
self.canvas.add_events(Gdk.EventMask.BUTTON_PRESS_MASK)
self.canvas.add_events(Gdk.EventMask.BUTTON_RELEASE_MASK)
self.canvas.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.canvas.add_events(Gdk.EventMask.KEY_PRESS_MASK)
self.canvas.connect("draw", self.__draw_cb)
self.canvas.connect("button-press-event", self._button_press_cb)
self.canvas.connect("button-release-event", self._button_release_cb)
self.canvas.connect("motion-notify-event", self._mouse_move_cb)
self.canvas.connect("key-press-event", self._keypress_cb)
self.canvas.set_can_focus(True)
self.canvas.grab_focus()
self.width = Gdk.Screen.width()
self.height = Gdk.Screen.height() - GRID_CELL_SIZE
self.sprites = Sprites(self.canvas)
self.slides = []
self.stators = []
self.scale = 1
locale.setlocale(locale.LC_NUMERIC, '')
self.decimal_point = locale.localeconv()['decimal_point']
if self.decimal_point == '' or self.decimal_point is None:
self.decimal_point = '.'
self.error_msg = None
self.result_function = [None, None]
self.label_function = [None, None]
_logger.debug("creating slides, stators, and reticule")
self.result_label = Stator(self.sprites, self.path, 'label',
int((self.width - 600) / 2),
SCREENOFFSET + 4 * SHEIGHT, 800, SHEIGHT)
for slide in self.SLIDES:
self.make_slide(slide, SLIDE)
for stator in self.STATORS:
self.make_slide(stator, STATOR)
self.reticule = Reticule(self.sprites, self.path, 'reticule', 150,
SCREENOFFSET + SHEIGHT, 100, 2 * SHEIGHT)
self.reticule.draw(2000)
self.press = None
self.last = None
self.dragpos = 0
# We need textviews for keyboard input from the on-screen keyboard
self._set_screen_dpi()
font_desc = Pango.font_description_from_string('12')
self.text_entries = []
self.text_buffers = []
w = self.reticule.tabs[0].spr.label_safe_width()
h = int(self.reticule.tabs[0].spr.label_safe_height() / 2)
for i in range(4): # Reticule top & bottom; Slider left & right
self.text_entries.append(Gtk.TextView())
self.text_entries[-1].set_justification(Gtk.Justification.CENTER)
self.text_entries[-1].set_pixels_above_lines(4)
''' Not necessary (and doesn't work on OS8)
self.text_entries[-1].override_background_color(
Gtk.StateType.NORMAL, Gdk.RGBA(0, 0, 0, 0))
'''
self.text_entries[-1].modify_font(font_desc)
self.text_buffers.append(self.text_entries[-1].get_buffer())
self.text_entries[-1].set_size_request(w, h)
self.text_entries[-1].show()
self.parent.fixed.put(self.text_entries[-1], 0, 0)
self.parent.fixed.show()
self.text_entries[-1].connect('focus-out-event',
self._text_focus_out_cb)
self.reticule.add_textview(self.text_entries[0], i=BOTTOM)
self.reticule.add_textview(self.text_entries[1], i=TOP)
self.reticule.set_fixed(self.parent.fixed)
for slide in self.slides:
slide.add_textview(self.text_entries[2], i=LEFT)
slide.add_textview(self.text_entries[3], i=RIGHT)
slide.set_fixed(self.parent.fixed)
if not self.sugar:
self.update_textview_y_offset(self.parent.menu_height)
self.active_slide = self.name_to_slide('C')
self.active_stator = self.name_to_stator('D')
self.update_slide_labels()
self.update_result_label()
def update_textview_y_offset(self, dy):
''' Need to account for menu height in GNOME '''
self.reticule.tabs[0].textview_y_offset += dy
self.reticule.tabs[1].textview_y_offset += dy
for slide in self.slides:
slide.tabs[0].textview_y_offset += dy
slide.tabs[1].textview_y_offset += dy
def _text_focus_out_cb(self, widget=None, event=None):
''' One of the four textviews was in focus '''
i = None
if widget in self.text_entries:
i = self.text_entries.index(widget)
bounds = self.text_buffers[i].get_bounds()
text = self.text_buffers[i].get_text(bounds[0], bounds[1], True)
text = text.strip()
self._process_numeric_input(i, text)
def _set_screen_dpi(self):
dpi = _get_screen_dpi()
font_map_default = PangoCairo.font_map_get_default()
font_map_default.set_resolution(dpi)
def __draw_cb(self, canvas, cr):
self.sprites.redraw_sprites(cr=cr)
# Handle the expose-event by drawing
def do_expose_event(self, event):
# Create the cairo context
cr = self.canvas.window.cairo_create()
print('set cr in do_expose')
self.sprites.set_cairo_context(cr)
# Restrict Cairo to the exposed area; avoid extra work
cr.rectangle(event.area.x, event.area.y, event.area.width,
event.area.height)
cr.clip()
# Refresh sprite list
self.sprites.redraw_sprites(cr=cr)
def _destroy_cb(self, win, event):
Gtk.main_quit()
def _keypress_cb(self, area, event):
""" Keypress: moving the slides with the arrow keys """
k = Gdk.keyval_name(event.keyval)
if not self.sugar:
return
if k == 'a':
self.parent.show_a()
elif k == 'k':
self.parent.show_k()
elif k in ['c', 'asterisk', 'x']:
self.parent.show_c()
elif k in ['i', '/']:
self.parent.show_ci()
elif k == 's':
self.parent.show_s()
elif k == 't':
self.parent.show_t()
elif k in ['l', 'plus']:
self.parent.show_l()
elif k in ['Left', 'less']:
if self.last is not None:
self._move_slides(self.last, -1)
elif k in ['Right', 'greater']:
if self.last is not None:
self._move_slides(self.last, 1)
elif k in ['Home', 'Pause', 'Up', '^']:
self._move_slides(
self.name_to_stator('D').spr,
-self.name_to_stator('D').spr.get_xy()[0])
elif k == 'r':
self.reticule.move(150, self.reticule.spr.get_xy()[1])
self.update_slide_labels()
self.update_result_label()
elif k in ['Down', 'v']:
self.parent.realign_cb()
self.reticule.move(150, self.reticule.spr.get_xy()[1])
self.update_slide_labels()
self.update_result_label()
return True
def _process_numeric_input(self, i, text):
try:
n = float(text.replace(self.decimal_point, '.'))
if i == 0:
self._move_reticule_to_stator_value(n)
elif i == 1:
self._move_reticule_to_slide_value(n)
elif i == 2:
self._move_slide_to_stator_value(n)
elif i == 3:
self._move_slide_to_stator_value(self._left_from_right(n))
except ValueError:
self.result_label.spr.labels[0] = _('NaN') + ' ' + text
return
def _process_text_field(self, text_field):
""" Process input from numeric text fields: could be a function. """
try:
my_min = "def f(): return " + text_field.replace('import', '')
userdefined = {}
exec(my_min, globals(), userdefined)
return list(userdefined.values())[0]()
except OverflowError as e:
self.result_label.spr.labels[0] = _('Overflow Error') + \
': ' + str(e)
self.result_label.draw(1000)
except NameError as e:
self.result_label.spr.labels[0] = _('Name Error') + ': ' + str(e)
self.result_label.draw(1000)
except ZeroDivisionError as e:
self.result_label.spr.labels[0] = _('Can not divide by zero') + \
': ' + str(e)
self.result_label.draw(1000)
except TypeError as e:
self.result_label.spr.labels[0] = _('Type Error') + ': ' + str(e)
self.result_label.draw(1000)
except ValueError as e:
self.result_label.spr.labels[0] = _('Type Error') + ': ' + str(e)
self.result_label.draw(1000)
except SyntaxError as e:
self.result_label.spr.labels[0] = _('Syntax Error') + ': ' + str(e)
self.result_label.draw(1000)
except:
traceback.print_exc()
return None
def make_slide(self, name, slide, custom_strings=None):
""" Create custom slide and stator from text entered on toolbar. """
if custom_strings is not None:
result = self._process_text_field(custom_strings[FMIN])
else:
result = self._process_text_field(DEFINITIONS[name][FMIN])
if result is None:
return
try:
min_value = float(result)
except ValueError as e:
self.result_label.spr.labels[0] = _('Value Error') + ': ' + str(e)
self.result_label.draw(1000)
return
if custom_strings is not None:
result = self._process_text_field(custom_strings[FMAX])
else:
result = self._process_text_field(DEFINITIONS[name][FMAX])
if result is None:
return
try:
max_value = float(result)
except ValueError:
self.result_label.spr.labels[0] = _('Value Error') + ': ' + str(e)
self.result_label.draw(1000)
return
if custom_strings is not None:
result = self._process_text_field(custom_strings[FSTEP])
else:
result = self._process_text_field(DEFINITIONS[name][FSTEP])
if result is None:
return
try:
step_value = float(result)
except ValueError:
self.result_label.spr.labels[0] = _('Value Error') + ': ' + str(e)
self.result_label.draw(1000)
return
if custom_strings is not None:
offset_string = custom_strings[FOFFSET]
else:
offset_string = DEFINITIONS[name][FOFFSET]
if custom_strings is not None:
label_string = custom_strings[FDISPLAY]
else:
label_string = DEFINITIONS[name][FDISPLAY]
if name == 'custom' or name == 'custom2':
if custom_strings is not None:
self.result_function[slide] = custom_strings[FRESULT]
self.label_function[slide] = custom_strings[FDISPLAY]
else:
self.result_function[slide] = DEFINITIONS[name][FRESULT]
self.label_function[slide] = DEFINITIONS[name][FDISPLAY]
if slide == SLIDE:
custom_slide = \
CustomSlide(self.sprites, self.path, name, 0,
SCREENOFFSET + SHEIGHT, self.SLIDES[name][0],
self._calc_slide_value, offset_string,
label_string, min_value, max_value,
step_value)
if custom_slide.error_msg is not None:
self.result_label.spr.set_label(custom_slide.error_msg)
self.result_label.draw(1000)
if self.name_to_slide(name) is not None and \
self.name_to_slide(name).name == name:
i = self.slides.index(self.name_to_slide(name))
active = False
if self.active_slide == self.slides[i]:
active = True
self.slides[i].hide()
self.slides[i] = custom_slide
if active:
self.active_slide = self.slides[i]
if self.sugar:
self.parent.set_slide()
else:
self.slides.append(custom_slide)
self.active_slide = self.name_to_slide(name)
else:
custom_stator = \
CustomStator(self.sprites, name, 0,
SCREENOFFSET + 2* SHEIGHT, self.STATORS[name][0],
self._calc_stator_value, self._calc_stator_result,
offset_string, label_string,
min_value, max_value, step_value)
if self.name_to_stator(name) is not None and \
self.name_to_stator(name).name == name:
i = self.stators.index(self.name_to_stator(name))
active = False
if self.active_stator == self.stators[i]:
active = True
self.stators[i].hide()
self.stators[i] = custom_stator
if active:
self.active_stator = self.stators[i]
if self.sugar:
self.parent.set_stator()
else:
self.stators.append(custom_stator)
self.active_stator = self.name_to_stator(name)
if self.sugar and name == 'custom' and hasattr(self.parent, 'sr'):
self.parent.show_u(slide)
if slide == SLIDE and custom_slide.error_msg is not None:
self.result_label.spr.set_label(custom_slide.error_msg)
self.result_label.draw(1000)
if slide == STATOR and custom_stator.error_msg is not None:
self.result_label.spr.set_label(custom_stator.error_msg)
self.result_label.draw(1000)
def name_to_slide(self, name):
for slide in self.slides:
if name == slide.name:
return slide
return None
def name_to_stator(self, name):
for stator in self.stators:
if name == stator.name:
return stator
return None
def sprite_in_stators(self, sprite):
for stator in self.stators:
if stator.match(sprite):
return True
return False
def find_stator(self, sprite):
for stator in self.stators:
if stator.match(sprite):
return stator
return None
def sprite_in_slides(self, sprite):
for slide in self.slides:
if slide.match(sprite):
return True
return False
def find_slide(self, sprite):
for slide in self.slides:
if slide.match(sprite):
return slide
return None
def _button_press_cb(self, win, event):
win.grab_focus()
x, y = list(map(int, event.get_coords()))
self.dragpos = x
spr = self.sprites.find_sprite((x, y))
self.press = spr
return True
def _mouse_move_cb(self, win, event):
""" Drag a rule with the mouse. """
if self.press is None:
self.dragpos = 0
return True
win.grab_focus()
x, y = list(map(int, event.get_coords()))
dx = x - self.dragpos
self._move_slides(self.press, dx)
self.dragpos = x
def _move_reticule_to_slide_value(self, value):
rx = self.reticule.spr.get_xy()[0] - self.active_slide.spr.get_xy()[0]
self.reticule.move_relative(
self._calc_dx_from_value(value, self.active_slide.name, rx), 0)
self.update_slide_labels()
self.update_result_label()
def _move_reticule_to_stator_value(self, value):
rx = self.reticule.spr.get_xy()[0] - self.active_stator.spr.get_xy()[0]
self.reticule.move_relative(
self._calc_dx_from_value(value, self.active_stator.name, rx), 0)
self.update_slide_labels()
self.update_result_label()
def _move_slide_to_stator_value(self, value):
rx = self.active_slide.spr.get_xy()[0] - \
self.active_stator.spr.get_xy()[0]
self.active_slide.move_relative(
self._calc_dx_from_value(value, self.active_stator.name, rx), 0)
self.update_slide_labels()
self.update_result_label()
def _calc_dx_from_value(self, value, name, rx):
if name in ['C', 'D']:
if value <= 0:
return 0
return log(value, 10) * SCALE - rx
elif name in ['CI', 'DI']:
if value == 0:
return 0
return log(10 / value, 10) * SCALE - rx
elif name in ['A', 'B']:
if value <= 0:
return 0
return log(pow(value, 1 / 2.), 10) * SCALE - rx
elif name in ['K', 'K2']:
if value <= 0:
return 0
return log(pow(value, 1 / 3.), 10) * SCALE - rx
elif name in ['L', 'L2']:
return (value / 10.) * SCALE - rx
elif name in ['LLn', 'LLn2']:
return log(exp(value), 10) * SCALE - rx
elif name in ['Log', 'Log2']:
return pow(10, log(value, 10)) * SCALE - rx
else:
return 0
def align_slides(self):
""" Move slide to align with stator """
slidex = self.active_slide.spr.get_xy()[0]
statorx = self.active_stator.spr.get_xy()[0]
dx = statorx - slidex
print('calling active slide', dx, 0)
self.active_slide.move_relative(dx, 0)
def _move_slides(self, sprite, dx):
if self.sprite_in_stators(sprite):
self.active_stator.move_relative(dx, 0)
self.active_slide.move_relative(dx, 0)
self.reticule.move_relative(dx, 0)
elif self.reticule.match(sprite):
self.reticule.move_relative(dx, 0)
elif self.sprite_in_slides(sprite):
self.find_slide(sprite).move_relative(dx, 0)
self.update_slide_labels()
self.update_result_label()
def _left_from_right(self, v_right):
if self.active_stator.name == 'L2':
return v_right - 10
elif self.active_stator.name == 'D':
return v_right / 10.
elif self.active_stator.name == 'B':
return v_right / 100.
elif self.active_stator.name == 'K2':
return v_right / 1000.
elif self.active_stator.name == 'DI':
return v_right * 10.
elif self.active_stator.name == 'LLn2':
return v_right - round(log(10), 2)
else:
return v_right
def _right_from_left(self, v_left):
if self.active_stator.name == 'L2':
return 10 + v_left
elif self.active_stator.name == 'D':
return v_left * 10.
elif self.active_stator.name == 'B':
return v_left * 100.
elif self.active_stator.name == 'K2':
return v_left * 1000.
elif self.active_stator.name == 'DI':
return v_left / 10.
elif self.active_stator.name == 'LLn2':
return round(log(10), 2) + v_left
else:
return v_left
def update_slide_labels(self):
""" Based on the current alignment of the rules, calculate labels. """
v_left = self.active_stator.calculate()
v_right = self._right_from_left(v_left)
label_left = str(v_left).replace('.', self.decimal_point)
label_right = str(v_right).replace('.', self.decimal_point)
self.active_slide.label(label_left, i=LEFT)
self.active_slide.label(label_right, i=RIGHT)
self.reticule.label(str(self.active_stator.result()).replace(
'.', self.decimal_point),
i=BOTTOM)
self.reticule.label(str(self.active_slide.calculate()).replace(
'.', self.decimal_point),
i=TOP)
def _button_release_cb(self, win, event):
if self.press == None:
return True
if self.press == self.active_slide.spr:
self.last = self.active_slide.tabs[LEFT].spr
elif self.press == self.active_stator.spr:
self.last = None
else:
self.last = self.press
self.press = None
self.update_result_label()
def update_result_label(self):
""" Update toolbar label with result of calculation. """
s = ''
if self.active_stator.name == 'D':
dx = self.name_to_stator('D').spr.get_xy()[0]
S = self.active_slide.calculate()
R = self._calc_stator_result('D')
if self.active_slide.name == 'A':
if self.name_to_slide('A').spr.get_xy()[0] == dx:
s = " √ %0.2f = %0.2f\t\t%0.2f² = %0.2f" % (S, R, R, S)
elif self.sugar:
self.parent.set_function_unknown()
elif self.active_slide.name == 'K':
if self.name_to_slide('K').spr.get_xy()[0] == dx:
s = " ∛ %0.2f = %0.2f\t\t%0.2f³ = %0.2f" % (S, R, R, S)
elif self.sugar:
self.parent.set_function_unknown()
elif self.active_slide.name == 'S':
if self.name_to_slide('S').spr.get_xy()[0] == dx:
s = " sin(%0.2f) = %0.2f\t\tasin(%0.2f) = %0.2f" % \
(S, R/10, R/10, S)
elif self.sugar:
self.parent.set_function_unknown()
elif self.active_slide.name == 'T':
if self.name_to_slide('T').spr.get_xy()[0] == dx:
s = " tan(%0.2f) = %0.2f\t\tatan(%0.2f) = %0.2f" % \
(S, R/10, R/10, S)
elif self.sugar:
self.parent.set_function_unknown()
elif self.active_slide.name == 'C':
D = str(self._calc_stator_value('D'))
s = "%s × %s = %s\t\t%s / %s = %s" % (D, S, R, R, S, D)
elif self.active_slide.name == 'CI':
D = str(self._calc_stator_value('D'))
s = "%s / %s = %s\t\t%s × %s = %s" % (D, S, R / 10, R / 10, S,
D)
elif self.active_stator.name == 'L2':
if self.active_slide.name == 'L':
# use n dash to display a minus sign
L2 = self._calc_stator_value('L2')
if L2 < 0:
L2str = "–" + str(-L2)
else:
L2str = str(L2)
L = self._calc_slide_value('L')
if L < 0:
operator1 = "–"
operator2 = "+"
Lstr = str(-L)
else:
operator1 = "+"
operator2 = "–"
Lstr = str(L)
LL = self._calc_stator_result('L2')
if LL < 0:
LLstr = "–" + str(-LL)
else:
LLstr = str(LL)
s = "%s %s %s = %s\t\t%s %s %s = %s" % (L2str, operator1, Lstr,
LLstr, LLstr,
operator2, Lstr, L2str)
elif self.active_stator.name == 'LLn2' and \
self.active_slide.name == 'C':
dx = self.name_to_stator('LLn2').spr.get_xy()[0]
S = self.active_slide.calculate()
R = self._calc_stator_result('LLn2')
if self.name_to_slide('C').spr.get_xy()[0] == dx:
s = " ln(%0.2f) = %0.2f\t\texp(%0.2f) = %0.2f" % (S, R, R, S)
elif self.sugar:
self.parent.set_function_unknown()
if self.active_slide.name == 'custom' or \
self.active_stator.name == 'custom2':
if self.error_msg is not None:
s = self.error_msg
else:
s = ''
self.result_label.draw(1000)
self.result_label.spr.set_label(s.replace('.', self.decimal_point))
def _top_slide_offset(self, x):
""" Calcualate the offset between the top and bottom slides """
x2, y2 = self.active_slide.spr.get_xy()
return x2 - x
# Calculate the value of individual slides and stators:
# (a) the offset of the reticule along the slide
# (b) the offset of the slide along the stator
# (c) the offset of the reticule along the reticule
def _r_offset(self, slide):
return self.reticule.spr.get_xy()[0] - slide.spr.get_xy()[0]
def _calc_slide_value(self, name=None):
if name is None:
name = self.active_slide.name
return self.function_calc(name,
self._r_offset(self.name_to_slide(name)),
SLIDE)
def _calc_stator_value(self, name=None):
if name is None:
name = self.active_stator.name
return self.function_calc(
name,
self._top_slide_offset(self.name_to_stator(name).spr.get_xy()[0]),
STATOR)
def _calc_stator_result(self, name=None):
if name is None:
name = self.active_stator.name
return self.function_calc(name,
self._r_offset(self.name_to_stator(name)),
STATOR)
def function_calc(self, name, dx, slide):
self.error_msg = None
if name in ['custom', 'custom2']:
my_result = "def f(x): return " + \
self.result_function[slide].replace('import','')
my_label = "def f(x): return " + \
self.label_function[slide].replace('import','')
else:
my_result = "def f(x): return " + DEFINITIONS[name][FRESULT]
my_label = "def f(x): return " + DEFINITIONS[name][FDISPLAY]
# Some slides handle wrap-around
rescale = 1
offset = 0
if name in ['C', 'D', 'CI', 'DI', 'LLn', 'LLn2', 'Log', 'Log2']:
if dx < 0:
rescale = 0.1
dx += SCALE
elif name in ['A', 'B']:
if dx < 0:
rescale = 0.01
dx += SCALE
elif name in ['K', 'K2']:
if dx < 0:
rescale = 0.001
dx += SCALE
elif name in ['L', 'L2']:
rescale = 10
if dx < 0:
dx += SCALE
offset = -10
userdefined = {}
try:
exec(my_result, globals(), userdefined)
result = list(userdefined.values())[0](float(dx) / SCALE) * rescale +\
offset
except OverflowError as e:
self.error_msg = _('Overflow Error') + ': ' + str(e)
return '?'
except NameError as e:
self.error_msg = _('Name Error') + ': ' + str(e)
return '?'
except ZeroDivisionError as e:
self.error_msg = _('Can not divide by zero') + ': ' + str(e)
return '?'
except TypeError as e:
self.error_msg = _('Type Error') + ': ' + str(e)
return '?'
except ValueError as e:
self.error_msg = _('Type Error') + ': ' + str(e)
return '?'
except SyntaxError as e:
self.error_msg = _('Syntax Error') + ': ' + str(e)
return '?'
except:
traceback.print_exc()
return None
# Some special cases to fine-tune the label display precision
precision = 2
if name in ['A', 'B', 'K', 'K2']:
if result > 50:
precision = 1
elif name in ['S', 'S2']:
if result > 60:
precision = 1
if name in ['K', 'K2']:
if result > 500:
precision = 0
userdefined = {}
try:
exec(my_label, globals(), userdefined)
label = list(userdefined.values())[0](result)
if type(label) == float:
return round(label, precision)
else:
return label
except OverflowError as e:
self.error_msg = _('Overflow Error') + ': ' + str(e)
except NameError as e:
self.error_msg = _('Name Error') + ': ' + str(e)
except ZeroDivisionError as e:
self.error_msg = _('Can not divide by zero') + ': ' + str(e)
except TypeError as e:
self.error_msg = _('Type Error') + ': ' + str(e)
except ValueError as e:
self.error_msg = _('Type Error') + ': ' + str(e)
except SyntaxError as e:
self.error_msg = _('Syntax Error') + ': ' + str(e)
except:
traceback.print_exc()
return None
return '??'
def __init__(self, canvas, path, parent=None, sugar=True):
""" Handle launch from both within and without of Sugar environment. """
self.SLIDES = {
'C': [C_slide_generator],
'CI': [CI_slide_generator],
'A': [A_slide_generator],
'K': [K_slide_generator],
'S': [S_slide_generator],
'T': [T_slide_generator],
'L': [L_slide_generator],
'LLn': [LLn_slide_generator],
'Log': [Log_slide_generator],
'custom': [Custom_slide_generator]
}
self.STATORS = {
'D': [D_stator_generator],
'DI': [DI_stator_generator],
'B': [B_stator_generator],
'K2': [K_stator_generator],
'S2': [S_stator_generator],
'T2': [T_stator_generator],
'L2': [L_stator_generator],
'LLn2': [LLn_stator_generator],
'Log2': [Log_stator_generator],
'custom2': [Custom_stator_generator]
}
self.path = path
self.sugar = sugar
self.canvas = canvas
self.parent = parent
parent.show_all()
self.canvas.add_events(Gdk.EventMask.BUTTON_PRESS_MASK)
self.canvas.add_events(Gdk.EventMask.BUTTON_RELEASE_MASK)
self.canvas.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.canvas.add_events(Gdk.EventMask.KEY_PRESS_MASK)
self.canvas.connect("draw", self.__draw_cb)
self.canvas.connect("button-press-event", self._button_press_cb)
self.canvas.connect("button-release-event", self._button_release_cb)
self.canvas.connect("motion-notify-event", self._mouse_move_cb)
self.canvas.connect("key-press-event", self._keypress_cb)
self.canvas.set_can_focus(True)
self.canvas.grab_focus()
self.width = Gdk.Screen.width()
self.height = Gdk.Screen.height() - GRID_CELL_SIZE
self.sprites = Sprites(self.canvas)
self.slides = []
self.stators = []
self.scale = 1
locale.setlocale(locale.LC_NUMERIC, '')
self.decimal_point = locale.localeconv()['decimal_point']
if self.decimal_point == '' or self.decimal_point is None:
self.decimal_point = '.'
self.error_msg = None
self.result_function = [None, None]
self.label_function = [None, None]
_logger.debug("creating slides, stators, and reticule")
self.result_label = Stator(self.sprites, self.path, 'label',
int((self.width - 600) / 2),
SCREENOFFSET + 4 * SHEIGHT, 800, SHEIGHT)
for slide in self.SLIDES:
self.make_slide(slide, SLIDE)
for stator in self.STATORS:
self.make_slide(stator, STATOR)
self.reticule = Reticule(self.sprites, self.path, 'reticule', 150,
SCREENOFFSET + SHEIGHT, 100, 2 * SHEIGHT)
self.reticule.draw(2000)
self.press = None
self.last = None
self.dragpos = 0
# We need textviews for keyboard input from the on-screen keyboard
self._set_screen_dpi()
font_desc = Pango.font_description_from_string('12')
self.text_entries = []
self.text_buffers = []
w = self.reticule.tabs[0].spr.label_safe_width()
h = int(self.reticule.tabs[0].spr.label_safe_height() / 2)
for i in range(4): # Reticule top & bottom; Slider left & right
self.text_entries.append(Gtk.TextView())
self.text_entries[-1].set_justification(Gtk.Justification.CENTER)
self.text_entries[-1].set_pixels_above_lines(4)
''' Not necessary (and doesn't work on OS8)
self.text_entries[-1].override_background_color(
Gtk.StateType.NORMAL, Gdk.RGBA(0, 0, 0, 0))
'''
self.text_entries[-1].modify_font(font_desc)
self.text_buffers.append(self.text_entries[-1].get_buffer())
self.text_entries[-1].set_size_request(w, h)
self.text_entries[-1].show()
self.parent.fixed.put(self.text_entries[-1], 0, 0)
self.parent.fixed.show()
self.text_entries[-1].connect('focus-out-event',
self._text_focus_out_cb)
self.reticule.add_textview(self.text_entries[0], i=BOTTOM)
self.reticule.add_textview(self.text_entries[1], i=TOP)
self.reticule.set_fixed(self.parent.fixed)
for slide in self.slides:
slide.add_textview(self.text_entries[2], i=LEFT)
slide.add_textview(self.text_entries[3], i=RIGHT)
slide.set_fixed(self.parent.fixed)
if not self.sugar:
self.update_textview_y_offset(self.parent.menu_height)
self.active_slide = self.name_to_slide('C')
self.active_stator = self.name_to_stator('D')
self.update_slide_labels()
self.update_result_label()
class SlideRule():
def __init__(self, canvas, path, parent=None, sugar=True):
""" Handle launch from both within and without of Sugar environment. """
self.SLIDES = {
'C': [C_slide_generator],
'CI': [CI_slide_generator],
'A': [A_slide_generator],
'K': [K_slide_generator],
'S': [S_slide_generator],
'T': [T_slide_generator],
'L': [L_slide_generator],
'LLn': [LLn_slide_generator],
'Log': [Log_slide_generator],
'custom': [Custom_slide_generator]
}
self.STATORS = {
'D': [D_stator_generator],
'DI': [DI_stator_generator],
'B': [B_stator_generator],
'K2': [K_stator_generator],
'S2': [S_stator_generator],
'T2': [T_stator_generator],
'L2': [L_stator_generator],
'LLn2': [LLn_stator_generator],
'Log2': [Log_stator_generator],
'custom2': [Custom_stator_generator]
}
self.path = path
self.sugar = sugar
self.canvas = canvas
self.parent = parent
parent.show_all()
self.canvas.add_events(Gdk.EventMask.BUTTON_PRESS_MASK)
self.canvas.add_events(Gdk.EventMask.BUTTON_RELEASE_MASK)
self.canvas.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.canvas.add_events(Gdk.EventMask.KEY_PRESS_MASK)
self.canvas.connect("draw", self.__draw_cb)
self.canvas.connect("button-press-event", self._button_press_cb)
self.canvas.connect("button-release-event", self._button_release_cb)
self.canvas.connect("motion-notify-event", self._mouse_move_cb)
self.canvas.connect("key-press-event", self._keypress_cb)
self.canvas.set_can_focus(True)
self.canvas.grab_focus()
self.width = Gdk.Screen.width()
self.height = Gdk.Screen.height() - GRID_CELL_SIZE
self.sprites = Sprites(self.canvas)
self.slides = []
self.stators = []
self.scale = 1
locale.setlocale(locale.LC_NUMERIC, '')
self.decimal_point = locale.localeconv()['decimal_point']
if self.decimal_point == '' or self.decimal_point is None:
self.decimal_point = '.'
self.error_msg = None
self.result_function = [None, None]
self.label_function = [None, None]
_logger.debug("creating slides, stators, and reticule")
self.result_label = Stator(self.sprites, self.path, 'label',
int((self.width - 600) / 2),
SCREENOFFSET + 4 * SHEIGHT, 800, SHEIGHT)
for slide in self.SLIDES:
self.make_slide(slide, SLIDE)
for stator in self.STATORS:
self.make_slide(stator, STATOR)
self.reticule = Reticule(self.sprites, self.path, 'reticule', 150,
SCREENOFFSET + SHEIGHT, 100, 2 * SHEIGHT)
self.reticule.draw(2000)
self.press = None
self.last = None
self.dragpos = 0
# We need textviews for keyboard input from the on-screen keyboard
self._set_screen_dpi()
font_desc = Pango.font_description_from_string('12')
self.text_entries = []
self.text_buffers = []
w = self.reticule.tabs[0].spr.label_safe_width()
h = int(self.reticule.tabs[0].spr.label_safe_height() / 2)
for i in range(4): # Reticule top & bottom; Slider left & right
self.text_entries.append(Gtk.TextView())
self.text_entries[-1].set_justification(Gtk.Justification.CENTER)
self.text_entries[-1].set_pixels_above_lines(4)
''' Not necessary (and doesn't work on OS8)
self.text_entries[-1].override_background_color(
Gtk.StateType.NORMAL, Gdk.RGBA(0, 0, 0, 0))
'''
self.text_entries[-1].modify_font(font_desc)
self.text_buffers.append(self.text_entries[-1].get_buffer())
self.text_entries[-1].set_size_request(w, h)
self.text_entries[-1].show()
self.parent.fixed.put(self.text_entries[-1], 0, 0)
self.parent.fixed.show()
self.text_entries[-1].connect('focus-out-event',
self._text_focus_out_cb)
self.reticule.add_textview(self.text_entries[0], i=BOTTOM)
self.reticule.add_textview(self.text_entries[1], i=TOP)
self.reticule.set_fixed(self.parent.fixed)
for slide in self.slides:
slide.add_textview(self.text_entries[2], i=LEFT)
slide.add_textview(self.text_entries[3], i=RIGHT)
slide.set_fixed(self.parent.fixed)
if not self.sugar:
self.update_textview_y_offset(self.parent.menu_height)
self.active_slide = self.name_to_slide('C')
self.active_stator = self.name_to_stator('D')
self.update_slide_labels()
self.update_result_label()
def update_textview_y_offset(self, dy):
''' Need to account for menu height in GNOME '''
self.reticule.tabs[0].textview_y_offset += dy
self.reticule.tabs[1].textview_y_offset += dy
for slide in self.slides:
slide.tabs[0].textview_y_offset += dy
slide.tabs[1].textview_y_offset += dy
def _text_focus_out_cb(self, widget=None, event=None):
''' One of the four textviews was in focus '''
i = None
if widget in self.text_entries:
i = self.text_entries.index(widget)
bounds = self.text_buffers[i].get_bounds()
text = self.text_buffers[i].get_text(bounds[0], bounds[1], True)
text = text.strip()
self._process_numeric_input(i, text)
def _set_screen_dpi(self):
dpi = _get_screen_dpi()
font_map_default = PangoCairo.font_map_get_default()
font_map_default.set_resolution(dpi)
def __draw_cb(self, canvas, cr):
self.sprites.redraw_sprites(cr=cr)
# Handle the expose-event by drawing
def do_expose_event(self, event):
# Create the cairo context
cr = self.canvas.window.cairo_create()
print 'set cr in do_expose'
self.sprites.set_cairo_context(cr)
# Restrict Cairo to the exposed area; avoid extra work
cr.rectangle(event.area.x, event.area.y, event.area.width,
event.area.height)
cr.clip()
# Refresh sprite list
self.sprites.redraw_sprites(cr=cr)
def _destroy_cb(self, win, event):
Gtk.main_quit()
def _keypress_cb(self, area, event):
""" Keypress: moving the slides with the arrow keys """
k = Gdk.keyval_name(event.keyval)
if not self.sugar:
return
if k == 'a':
self.parent.show_a()
elif k == 'k':
self.parent.show_k()
elif k in ['c', 'asterisk', 'x']:
self.parent.show_c()
elif k in ['i', '/']:
self.parent.show_ci()
elif k == 's':
self.parent.show_s()
elif k == 't':
self.parent.show_t()
elif k in ['l', 'plus']:
self.parent.show_l()
elif k in ['Left', 'less']:
if self.last is not None:
self._move_slides(self.last, -1)
elif k in ['Right', 'greater']:
if self.last is not None:
self._move_slides(self.last, 1)
elif k in ['Home', 'Pause', 'Up', '^']:
self._move_slides(
self.name_to_stator('D').spr,
-self.name_to_stator('D').spr.get_xy()[0])
elif k == 'r':
self.reticule.move(150, self.reticule.spr.get_xy()[1])
self.update_slide_labels()
self.update_result_label()
elif k in ['Down', 'v']:
self.parent.realign_cb()
self.reticule.move(150, self.reticule.spr.get_xy()[1])
self.update_slide_labels()
self.update_result_label()
return True
def _process_numeric_input(self, i, text):
try:
n = float(text.replace(self.decimal_point, '.'))
if i == 0:
self._move_reticule_to_stator_value(n)
elif i == 1:
self._move_reticule_to_slide_value(n)
elif i == 2:
self._move_slide_to_stator_value(n)
elif i == 3:
self._move_slide_to_stator_value(self._left_from_right(n))
except ValueError:
self.result_label.spr.labels[0] = _('NaN') + ' ' + text
return
def _process_text_field(self, text_field):
""" Process input from numeric text fields: could be a function. """
try:
my_min = "def f(): return " + text_field.replace('import', '')
userdefined = {}
exec my_min in globals(), userdefined
return userdefined.values()[0]()
except OverflowError, e:
self.result_label.spr.labels[0] = _('Overflow Error') + \
': ' + str(e)
self.result_label.draw(1000)
except NameError, e:
self.result_label.spr.labels[0] = _('Name Error') + ': ' + str(e)
self.result_label.draw(1000)
