Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
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# -*- coding: utf-8 -*-
from kivy.lang import Builder
from kivy.uix.modalview import ModalView
from kivymd.label import MDLabel
from kivymd.theming import ThemableBehavior
from kivy.uix.floatlayout import FloatLayout
from kivymd.elevationbehavior import ElevationBehavior
import calendar
from datetime import date
import datetime
from kivy.properties import StringProperty, NumericProperty, ObjectProperty, \
BooleanProperty
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.behaviors import ButtonBehavior
from kivymd.ripplebehavior import CircularRippleBehavior
from kivy.clock import Clock
from kivy.core.window import Window
Builder.load_string("""
#:import calendar calendar
<MDDatePicker>
cal_layout: cal_layout
size_hint: (None, None)
size: [dp(328), dp(484)] if self.theme_cls.device_orientation == 'portrait'\
else [dp(512), dp(304)]
pos_hint: {'center_x': .5, 'center_y': .5}
canvas:
Color:
rgb: app.theme_cls.primary_color
Rectangle:
size: [dp(328), dp(96)] if self.theme_cls.device_orientation == 'portrait'\
else [dp(168), dp(304)]
pos: [root.pos[0], root.pos[1] + root.height-dp(96)] if self.theme_cls.device_orientation == 'portrait'\
else [root.pos[0], root.pos[1] + root.height-dp(304)]
Color:
rgb: app.theme_cls.bg_normal
Rectangle:
size: [dp(328), dp(484)-dp(96)] if self.theme_cls.device_orientation == 'portrait'\
else [dp(344), dp(304)]
pos: [root.pos[0], root.pos[1] + root.height-dp(96)-(dp(484)-dp(96))]\
if self.theme_cls.device_orientation == 'portrait' else [root.pos[0]+dp(168), root.pos[1]] #+dp(334)
MDLabel:
id: label_full_date
font_style: 'Display1'
text_color: 1, 1, 1, 1
theme_text_color: 'Custom'
size_hint: (None, None)
size: [root.width, dp(30)] if root.theme_cls.device_orientation == 'portrait'\
else [dp(168), dp(30)]
pos: [root.pos[0]+dp(23), root.pos[1] + root.height - dp(74)] \
if root.theme_cls.device_orientation == 'portrait' \
else [root.pos[0]+dp(3), root.pos[1] + dp(214)]
line_height: 0.84
valign: 'middle'
text_size: [root.width, None] if root.theme_cls.device_orientation == 'portrait'\
else [dp(149), None]
bold: True
text: root.fmt_lbl_date(root.sel_year, root.sel_month, root.sel_day, root.theme_cls.device_orientation)
MDLabel:
id: label_year
font_style: 'Subhead'
text_color: 1, 1, 1, 1
theme_text_color: 'Custom'
size_hint: (None, None)
size: root.width, dp(30)
pos: (root.pos[0]+dp(23), root.pos[1]+root.height-dp(40)) if root.theme_cls.device_orientation == 'portrait'\
else (root.pos[0]+dp(16), root.pos[1]+root.height-dp(41))
valign: 'middle'
text: str(root.sel_year)
GridLayout:
id: cal_layout
cols: 7
size: (dp(44*7), dp(40*7)) if root.theme_cls.device_orientation == 'portrait'\
else (dp(46*7), dp(32*7))
col_default_width: dp(42) if root.theme_cls.device_orientation == 'portrait'\
else dp(39)
size_hint: (None, None)
padding: (dp(2), 0) if root.theme_cls.device_orientation == 'portrait'\
else (dp(7), 0)
spacing: (dp(2), 0) if root.theme_cls.device_orientation == 'portrait'\
else (dp(7), 0)
pos: (root.pos[0]+dp(10), root.pos[1]+dp(60)) if root.theme_cls.device_orientation == 'portrait'\
else (root.pos[0]+dp(168)+dp(8), root.pos[1]+dp(48))
MDLabel:
id: label_month_selector
font_style: 'Body2'
text: calendar.month_name[root.month].capitalize() + ' ' + str(root.year)
size_hint: (None, None)
size: root.width, dp(30)
pos: root.pos
theme_text_color: 'Primary'
pos_hint: {'center_x': 0.5, 'center_y': 0.75} if self.theme_cls.device_orientation == 'portrait'\
else {'center_x': 0.67, 'center_y': 0.915}
valign: "middle"
halign: "center"
MDIconButton:
icon: 'chevron-left'
theme_text_color: 'Secondary'
pos_hint: {'center_x': 0.09, 'center_y': 0.745} if root.theme_cls.device_orientation == 'portrait'\
else {'center_x': 0.39, 'center_y': 0.925}
on_release: root.change_month('prev')
MDIconButton:
icon: 'chevron-right'
theme_text_color: 'Secondary'
pos_hint: {'center_x': 0.92, 'center_y': 0.745} if root.theme_cls.device_orientation == 'portrait'\
else {'center_x': 0.94, 'center_y': 0.925}
on_release: root.change_month('next')
MDFlatButton:
pos: root.pos[0]+root.size[0]-dp(72)*2, root.pos[1] + dp(7)
text: "Cancel"
on_release: root.dismiss()
MDFlatButton:
pos: root.pos[0]+root.size[0]-dp(72), root.pos[1] + dp(7)
text: "OK"
on_release: root.ok_click()
<DayButton>
size_hint: None, None
size: (dp(40), dp(40)) if root.theme_cls.device_orientation == 'portrait'\
else (dp(32), dp(32))
MDLabel:
font_style: 'Caption'
theme_text_color: 'Custom' if root.is_today and not root.is_selected else 'Primary'
text_color: root.theme_cls.primary_color
opposite_colors: root.is_selected if root.owner.sel_month == root.owner.month \
and root.owner.sel_year == root.owner.year and str(self.text) == str(root.owner.sel_day) else False
size_hint_x: None
valign: 'middle'
halign: 'center'
text: root.text
<WeekdayLabel>
font_style: 'Caption'
theme_text_color: 'Secondary'
size: (dp(40), dp(40)) if root.theme_cls.device_orientation == 'portrait'\
else (dp(32), dp(32))
size_hint: None, None
text_size: self.size
valign: 'middle' if root.theme_cls.device_orientation == 'portrait' else 'bottom'
halign: 'center'
<DaySelector>
size: (dp(40), dp(40)) if root.theme_cls.device_orientation == 'portrait'\
else (dp(32), dp(32))
size_hint: (None, None)
canvas:
Color:
rgba: self.theme_cls.primary_color if self.shown else [0, 0, 0, 0]
Ellipse:
size: (dp(40), dp(40)) if root.theme_cls.device_orientation == 'portrait'\
else (dp(32), dp(32))
pos: self.pos if root.theme_cls.device_orientation == 'portrait'\
else [self.pos[0] + dp(3), self.pos[1]]
""")
class DaySelector(ThemableBehavior, AnchorLayout):
shown = BooleanProperty(False)
def __init__(self, parent):
super(DaySelector, self).__init__()
self.parent_class = parent
self.parent_class.add_widget(self, index=7)
self.selected_widget = None
Window.bind(on_resize=self.move_resize)
def update(self):
parent = self.parent_class
if parent.sel_month == parent.month and parent.sel_year == parent.year:
self.shown = True
else:
self.shown = False
def set_widget(self, widget):
self.selected_widget = widget
self.pos = widget.pos
self.move_resize(do_again=True)
self.update()
def move_resize(self, window=None, width=None, height=None, do_again=True):
self.pos = self.selected_widget.pos
if do_again:
Clock.schedule_once(lambda x: self.move_resize(do_again=False), 0.01)
class DayButton(ThemableBehavior, CircularRippleBehavior, ButtonBehavior,
AnchorLayout):
text = StringProperty()
owner = ObjectProperty()
is_today = BooleanProperty(False)
is_selected = BooleanProperty(False)
def on_release(self):
self.owner.set_selected_widget(self)
class WeekdayLabel(MDLabel):
pass
class MDDatePicker(FloatLayout, ThemableBehavior, ElevationBehavior,
ModalView):
_sel_day_widget = ObjectProperty()
cal_list = None
cal_layout = ObjectProperty()
sel_year = NumericProperty()
sel_month = NumericProperty()
sel_day = NumericProperty()
day = NumericProperty()
month = NumericProperty()
year = NumericProperty()
today = date.today()
callback = ObjectProperty()
class SetDateError(Exception):
pass
def __init__(self, callback, year=None, month=None, day=None,
firstweekday=0,
**kwargs):
self.callback = callback
self.cal = calendar.Calendar(firstweekday)
self.sel_year = year if year else self.today.year
self.sel_month = month if month else self.today.month
self.sel_day = day if day else self.today.day
self.month = self.sel_month
self.year = self.sel_year
self.day = self.sel_day
super(MDDatePicker, self).__init__(**kwargs)
self.selector = DaySelector(parent=self)
self.generate_cal_widgets()
self.update_cal_matrix(self.sel_year, self.sel_month)
self.set_month_day(self.sel_day)
self.selector.update()
def ok_click(self):
self.callback(date(self.sel_year, self.sel_month, self.sel_day))
self.dismiss()
def fmt_lbl_date(self, year, month, day, orientation):
d = datetime.date(int(year), int(month), int(day))
separator = '\n' if orientation == 'landscape' else ' '
return d.strftime('%a,').capitalize() + separator + d.strftime(
'%b').capitalize() + ' ' + str(day).lstrip('0')
def set_date(self, year, month, day):
try:
date(year, month, day)
except Exception as e:
print(e)
if str(e) == "day is out of range for month":
raise self.SetDateError(" Day %s day is out of range for month %s" % (day, month))
elif str(e) == "month must be in 1..12":
raise self.SetDateError("Month must be between 1 and 12, got %s" % month)
elif str(e) == "year is out of range":
raise self.SetDateError("Year must be between %s and %s, got %s" %
(datetime.MINYEAR, datetime.MAXYEAR, year))
else:
self.sel_year = year
self.sel_month = month
self.sel_day = day
self.month = self.sel_month
self.year = self.sel_year
self.day = self.sel_day
self.update_cal_matrix(self.sel_year, self.sel_month)
self.set_month_day(self.sel_day)
self.selector.update()
def set_selected_widget(self, widget):
if self._sel_day_widget:
self._sel_day_widget.is_selected = False
widget.is_selected = True
self.sel_month = int(self.month)
self.sel_year = int(self.year)
self.sel_day = int(widget.text)
self._sel_day_widget = widget
self.selector.set_widget(widget)
def set_month_day(self, day):
for idx in range(len(self.cal_list)):
if str(day) == str(self.cal_list[idx].text):
self._sel_day_widget = self.cal_list[idx]
self.sel_day = int(self.cal_list[idx].text)
if self._sel_day_widget:
self._sel_day_widget.is_selected = False
self._sel_day_widget = self.cal_list[idx]
self.cal_list[idx].is_selected = True
self.selector.set_widget(self.cal_list[idx])
def update_cal_matrix(self, year, month):
try:
dates = [x for x in self.cal.itermonthdates(year, month)]
except ValueError as e:
if str(e) == "year is out of range":
pass
else:
self.year = year
self.month = month
for idx in range(len(self.cal_list)):
if idx >= len(dates) or dates[idx].month != month:
self.cal_list[idx].disabled = True
self.cal_list[idx].text = ''
else:
self.cal_list[idx].disabled = False
self.cal_list[idx].text = str(dates[idx].day)
self.cal_list[idx].is_today = dates[idx] == self.today
self.selector.update()
def generate_cal_widgets(self):
cal_list = []
for i in calendar.day_abbr:
self.cal_layout.add_widget(WeekdayLabel(text=i[0].upper()))
for i in range(6 * 7): # 6 weeks, 7 days a week
db = DayButton(owner=self)
cal_list.append(db)
self.cal_layout.add_widget(db)
self.cal_list = cal_list
def change_month(self, operation):
op = 1 if operation is 'next' else -1
sl, sy = self.month, self.year
m = 12 if sl + op == 0 else 1 if sl + op == 13 else sl + op
y = sy - 1 if sl + op == 0 else sy + 1 if sl + op == 13 else sy
self.update_cal_matrix(y, m)