Widget Seletor de Data de Kivy
[RESOLVIDO] Por favor, veja abaixo a aplicação da resposta aceita e o código fonte para o funcionamento do widget kivy DatePicker.
Eu tenho aprendido Kivy e decidi fazer um widget de selecionador de data como um exercício de aprendizado.
import kivy
kivy.require('1.4.0')
from kivy.uix.gridlayout import GridLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.app import App
from datetime import date, timedelta
class DatePicker(BoxLayout):
def __init__(self, **kwargs):
super(DatePicker, self).__init__(**kwargs)
self.date = date.today()
self.orientation = "vertical"
self.header = BoxLayout(orientation = 'horizontal',
size_hint = (1, 0.2))
self.body = GridLayout(cols = 7)
self.add_widget(self.header)
self.add_widget(self.body)
self.populate_body()
self.populate_header()
def populate_header(self):
self.header.clear_widgets()
self.previous_month = Button(text = "<")
self.next_month = Button(text = ">")
self.current_month = Label(text = repr(self.date),
size_hint = (2, 1))
self.header.add_widget(self.previous_month)
self.header.add_widget(self.current_month)
self.header.add_widget(self.next_month)
def populate_body(self):
self.body.clear_widgets()
date_cursor = date(self.date.year, self.date.month, 1)
while date_cursor.month == self.date.month:
self.date_label = Label(text = str(date_cursor.day))
self.body.add_widget(self.date_label)
date_cursor += timedelta(days = 1)
# Not yet implimented ###
# def set_date(self, day):
# self.date = date(self.date.year, self.date.month, day)
# self.populate_body()
# self.populate_header()
#
# def move_next_month(self):
# if self.date.month == 12:
# self.date = date(self.date.year + 1, 1, self.date.day)
# else:
# self.date = date(self.date.year, self.date.month + 1, self.date.day)
# def move_previous_month(self):
# if self.date.month == 1:
# self.date = date(self.date.year - 1, 12, self.date.day)
# else:
# self.date = date(self.date.year, self.date.month -1, self.date.day)
# self.populate_header()
# self.populate_body()
class MyApp(App):
def build(self):
return DatePicker()
if __name__ == '__main__':
MyApp().run()
Eu bati em um bloco de estrada e não posso descobrir como continuar. Eu quero adicionar um método tal que quando os date_labels são clicados, eles definem self.date para um objeto de data com essa parte do dia.
Eu tentei adicionar
self.date_label.bind(on_touch_down = self.set_date(date_cursor.day))
mas só tem erros máximos de recursão.
SOLUÇÃO:import kivy
kivy.require('1.4.0')
from kivy.uix.gridlayout import GridLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.app import App
from datetime import date, timedelta
from functools import partial
class DatePicker(BoxLayout):
def __init__(self, *args, **kwargs):
super(DatePicker, self).__init__(**kwargs)
self.date = date.today()
self.orientation = "vertical"
self.month_names = ('January',
'February',
'March',
'April',
'May',
'June',
'July',
'August',
'September',
'October',
'November',
'December')
if kwargs.has_key("month_names"):
self.month_names = kwargs['month_names']
self.header = BoxLayout(orientation = 'horizontal',
size_hint = (1, 0.2))
self.body = GridLayout(cols = 7)
self.add_widget(self.header)
self.add_widget(self.body)
self.populate_body()
self.populate_header()
def populate_header(self, *args, **kwargs):
self.header.clear_widgets()
previous_month = Button(text = "<")
previous_month.bind(on_press=partial(self.move_previous_month))
next_month = Button(text = ">", on_press = self.move_next_month)
next_month.bind(on_press=partial(self.move_next_month))
month_year_text = self.month_names[self.date.month -1] + ' ' + str(self.date.year)
current_month = Label(text=month_year_text, size_hint = (2, 1))
self.header.add_widget(previous_month)
self.header.add_widget(current_month)
self.header.add_widget(next_month)
def populate_body(self, *args, **kwargs):
self.body.clear_widgets()
date_cursor = date(self.date.year, self.date.month, 1)
for filler in range(date_cursor.isoweekday()-1):
self.body.add_widget(Label(text=""))
while date_cursor.month == self.date.month:
date_label = Button(text = str(date_cursor.day))
date_label.bind(on_press=partial(self.set_date,
day=date_cursor.day))
if self.date.day == date_cursor.day:
date_label.background_normal, date_label.background_down = date_label.background_down, date_label.background_normal
self.body.add_widget(date_label)
date_cursor += timedelta(days = 1)
def set_date(self, *args, **kwargs):
self.date = date(self.date.year, self.date.month, kwargs['day'])
self.populate_body()
self.populate_header()
def move_next_month(self, *args, **kwargs):
if self.date.month == 12:
self.date = date(self.date.year + 1, 1, self.date.day)
else:
self.date = date(self.date.year, self.date.month + 1, self.date.day)
self.populate_header()
self.populate_body()
def move_previous_month(self, *args, **kwargs):
if self.date.month == 1:
self.date = date(self.date.year - 1, 12, self.date.day)
else:
self.date = date(self.date.year, self.date.month -1, self.date.day)
self.populate_header()
self.populate_body()
class MyApp(App):
def build(self):
return DatePicker()
if __name__ == '__main__':
MyApp().run()