class RadioGroupScreen(MenuScreen):
""" Radio group screen """
def __init__(self, util, listeners, voice_assistant):
self.util = util
self.config = util.config
self.groups_list = self.util.get_stations_folders()
self.factory = Factory(util)
d = [MENU_ROWS, MENU_COLUMNS]
MenuScreen.__init__(self,
util,
listeners,
MENU_ROWS,
MENU_COLUMNS,
voice_assistant,
d,
self.turn_page,
page_in_title=False)
self.total_pages = math.ceil(len(self.groups_list) / PAGE_SIZE)
self.title = util.get_stations_top_folder()
m = self.create_genre_menu_button
label_area = (
(self.menu_layout.h / MENU_ROWS) / 100) * (100 - ICON_AREA)
font_size = int((label_area / 100) * FONT_HEIGHT)
self.groups_menu = MultiPageMenu(util,
self.next_page,
self.previous_page,
self.set_title,
self.reset_title,
self.go_to_page,
m,
MENU_ROWS,
MENU_COLUMNS,
None, (0, 0, 0, 0),
self.menu_layout,
align=ALIGN_CENTER,
font_size=font_size)
self.groups_menu.add_listener(listeners[KEY_GENRE])
self.set_menu(self.groups_menu)
color_dark_light = self.config[COLORS][COLOR_DARK_LIGHT]
self.navigator = RadioGroupNavigator(self.util, self.layout.BOTTOM,
listeners, color_dark_light,
self.total_pages)
self.add_component(self.navigator)
current_name = self.get_current_group_name()
if current_name == None:
self.current_page = 1
else:
try:
current_group_index = self.groups_list.index(current_name)
self.current_page = int(current_group_index / PAGE_SIZE) + 1
except:
current_group_index = 0
self.turn_page()
def create_genre_menu_button(self, s, constr, action, scale, font_size):
""" Create Genre Menu button
:param s: button state
:param constr: scaling constraints
:param action: button event listener
:param scale: True - scale images, False - don't scale images
:return: genre menu button
"""
s.padding = BUTTON_PADDING
s.image_area_percent = ICON_AREA
s.fixed_height = font_size
s.v_align = CENTER
return self.factory.create_menu_button(s,
constr,
action,
scale,
font_size=font_size)
def get_current_group_name(self):
key = STATIONS + "." + self.config[CURRENT][LANGUAGE]
name = None
try:
name = self.config[key][CURRENT_STATIONS]
except:
pass
return name
def get_page(self):
start = (self.current_page - 1) * PAGE_SIZE
end = self.current_page * PAGE_SIZE
tmp_layout = self.groups_menu.get_layout(self.groups_list)
button_rect = tmp_layout.constraints[0]
image_box = self.factory.get_icon_bounding_box(button_rect,
ICON_LOCATION,
ICON_AREA, ICON_SIZE,
BUTTON_PADDING)
groups_dict = self.util.load_stations_folders(image_box)
return self.util.get_radio_group_slice(groups_dict, start, end)
def turn_page(self):
""" Turn book genre page """
group_page = self.get_page()
self.groups_menu.set_items(group_page, 0, self.change_group, False)
current_name = self.get_current_group_name()
try:
self.current_genre = group_page[current_name]
self.groups_menu.item_selected(self.current_genre)
except:
keys = list(group_page.keys())
self.groups_menu.item_selected(group_page[keys[0]])
if self.navigator and self.total_pages > 1:
self.navigator.left_button.change_label(str(self.current_page - 1))
self.navigator.right_button.change_label(
str(self.total_pages - self.current_page))
for b in self.groups_menu.buttons.values():
b.parent_screen = self
self.set_title(self.current_page)
self.groups_menu.clean_draw_update()
def change_group(self, state):
""" Change group event listener
:param state: button state
"""
if not self.visible:
return
self.current_genre = state
key = STATIONS + "." + self.config[CURRENT][LANGUAGE]
self.config[key][CURRENT_STATIONS] = state.genre
state.source = GENRE
self.groups_menu.notify_listeners(state)
def add_screen_observers(self, update_observer, redraw_observer):
""" Add screen observers
:param update_observer: observer for updating the screen
:param redraw_observer: observer to redraw the whole screen
"""
self.navigator.add_observers(update_observer, redraw_observer)
self.groups_menu.add_menu_observers(update_observer,
redraw_observer,
release=False)
class RadioGroupScreen(MenuScreen):
""" Radio group screen """
def __init__(self, util, listeners, voice_assistant):
self.util = util
self.config = util.config
self.groups_list = self.util.get_stations_folders()
self.factory = Factory(util)
d = [MENU_ROWS, MENU_COLUMNS]
MenuScreen.__init__(self,
util,
listeners,
MENU_ROWS,
MENU_COLUMNS,
voice_assistant,
d,
self.turn_page,
page_in_title=False)
self.total_pages = math.ceil(len(self.groups_list) / PAGE_SIZE)
self.title = util.get_stations_top_folder()
m = self.factory.create_genre_menu_button
self.groups_menu = MultiPageMenu(util,
self.next_page,
self.previous_page,
self.set_title,
self.reset_title,
self.go_to_page,
m,
MENU_ROWS,
MENU_COLUMNS,
None, (0, 0, 0),
self.menu_layout,
align=ALIGN_CENTER)
self.groups_menu.add_listener(listeners[KEY_GENRE])
self.set_menu(self.groups_menu)
color_dark_light = self.config[COLORS][COLOR_DARK_LIGHT]
self.navigator = RadioGroupNavigator(self.util, self.layout.BOTTOM,
listeners, color_dark_light,
self.total_pages)
self.components.append(self.navigator)
current_name = self.get_current_group_name()
if current_name == None:
self.current_page = 1
else:
try:
current_group_index = self.groups_list.index(current_name)
self.current_page = int(current_group_index / PAGE_SIZE) + 1
except:
current_group_index = 0
self.turn_page()
def get_current_group_name(self):
key = STATIONS + "." + self.config[CURRENT][LANGUAGE]
name = None
try:
name = self.config[key][CURRENT_STATIONS]
except:
pass
return name
def get_page(self):
start = (self.current_page - 1) * PAGE_SIZE
end = self.current_page * PAGE_SIZE
page = self.groups_list[start:end]
tmp_layout = self.groups_menu.get_layout(self.groups_list)
button_rect = tmp_layout.constraints[0]
groups_dict = self.util.load_stations_folders(button_rect)
return self.util.get_radio_group_slice(groups_dict, start, end)
def turn_page(self):
""" Turn book genre page """
group_page = self.get_page()
self.groups_menu.set_items(group_page, 0, self.change_group, False)
current_name = self.get_current_group_name()
try:
self.current_genre = group_page[current_name]
self.groups_menu.item_selected(self.current_genre)
except:
keys = list(group_page.keys())
self.groups_menu.item_selected(group_page[keys[0]])
if self.navigator and self.total_pages > 1:
self.navigator.left_button.change_label(str(self.current_page - 1))
self.navigator.right_button.change_label(
str(self.total_pages - self.current_page))
self.set_title(self.current_page)
self.groups_menu.clean_draw_update()
def change_group(self, state):
""" Change group event listener
:param state: button state
"""
if not self.visible:
return
self.current_genre = state
key = STATIONS + "." + self.config[CURRENT][LANGUAGE]
self.config[key][CURRENT_STATIONS] = state.genre
state.source = GENRE
self.groups_menu.notify_listeners(state)
def add_screen_observers(self, update_observer, redraw_observer):
""" Add screen observers
:param update_observer: observer for updating the screen
:param redraw_observer: observer to redraw the whole screen
"""
self.navigator.add_observers(update_observer, redraw_observer)
self.groups_menu.add_menu_observers(update_observer,
redraw_observer,
release=False)