Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
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# -*- coding: utf-8 -*-
from kivy.lang import Builder
from kivy.properties import StringProperty, ListProperty, NumericProperty
from kivy.uix.behaviors import ToggleButtonBehavior
from kivy.uix.label import Label
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import AliasProperty, BooleanProperty
from kivy.metrics import dp, sp
from kivy.animation import Animation
from kivy.utils import get_color_from_hex
from kivymd.color_definitions import colors
from kivymd.icon_definitions import md_icons
from kivymd.theming import ThemableBehavior
from kivymd.elevationbehavior import RoundElevationBehavior
from kivymd.ripplebehavior import CircularRippleBehavior
from kivy.uix.behaviors import ButtonBehavior
from kivy.uix.widget import Widget
Builder.load_string('''
<MDCheckbox>:
canvas:
Clear
Color:
rgba: self.color
Rectangle:
texture: self.texture
size: self.texture_size
pos: int(self.center_x - self.texture_size[0] / 2.), int(self.center_y - self.texture_size[1] / 2.)
text: self._radio_icon if self.group else self._checkbox_icon
font_name: 'Icons'
font_size: sp(24)
color: self.theme_cls.primary_color if self.active else self.theme_cls.secondary_text_color
halign: 'center'
valign: 'middle'
<Thumb>:
color: 1, 1, 1, 1
canvas:
Color:
rgba: self.color
Ellipse:
size: self.size
pos: self.pos
<MDSwitch>:
canvas.before:
Color:
rgba: self._track_color_disabled if self.disabled else \
(self._track_color_active if self.active else self._track_color_normal)
Ellipse:
size: dp(16), dp(16)
pos: self.x, self.center_y - dp(8)
angle_start: 180
angle_end: 360
Rectangle:
size: self.width - dp(16), dp(16)
pos: self.x + dp(8), self.center_y - dp(8)
Ellipse:
size: dp(16), dp(16)
pos: self.right - dp(16), self.center_y - dp(8)
angle_start: 0
angle_end: 180
on_release: thumb.trigger_action()
Thumb:
id: thumb
size_hint: None, None
size: dp(24), dp(24)
pos: root._thumb_pos
color: root.thumb_color_disabled if root.disabled else \
(root.thumb_color_down if root.active else root.thumb_color)
elevation: 4 if root.active else 2
on_release: setattr(root, 'active', not root.active)
''')
class MDCheckbox(ThemableBehavior, CircularRippleBehavior,
ToggleButtonBehavior, Label):
active = BooleanProperty(False)
_checkbox_icon = StringProperty(
u"{}".format(md_icons['square-o']))
_radio_icon = StringProperty(u"{}".format(md_icons['circle-o']))
_icon_active = StringProperty(u"{}".format(md_icons['check-square']))
def __init__(self, **kwargs):
super(MDCheckbox, self).__init__(**kwargs)
self.register_event_type('on_active')
self.check_anim_out = Animation(font_size=0, duration=.1, t='out_quad')
self.check_anim_in = Animation(font_size=sp(24), duration=.1,
t='out_quad')
self.check_anim_out.bind(
on_complete=lambda *x: self.check_anim_in.start(self))
def on_state(self, *args):
if self.state == 'down':
self.check_anim_in.cancel(self)
self.check_anim_out.start(self)
self._radio_icon = u"{}".format(md_icons['dot-circle'])
self._checkbox_icon = u"{}".format(md_icons['check-square'])
self.active = True
else:
self.check_anim_in.cancel(self)
self.check_anim_out.start(self)
self._radio_icon = u"{}".format(md_icons['circle-o'])
self._checkbox_icon = u"{}".format(
md_icons['square-o'])
self.active = False
def on_active(self, instance, value):
self.state = 'down' if value else 'normal'
class Thumb(RoundElevationBehavior, CircularRippleBehavior, ButtonBehavior,
Widget):
ripple_scale = NumericProperty(2)
def _set_ellipse(self, instance, value):
self.ellipse.size = (self.ripple_rad, self.ripple_rad)
if self.ellipse.size[0] > self.width * 1.5 and not self.fading_out:
self.fade_out()
self.ellipse.pos = (self.center_x - self.ripple_rad / 2.,
self.center_y - self.ripple_rad / 2.)
self.stencil.pos = (
self.center_x - (self.width * self.ripple_scale) / 2,
self.center_y - (self.height * self.ripple_scale) / 2)
class MDSwitch(ThemableBehavior, ButtonBehavior, FloatLayout):
active = BooleanProperty(False)
_thumb_color = ListProperty(get_color_from_hex(colors['Grey']['50']))
def _get_thumb_color(self):
return self._thumb_color
def _set_thumb_color(self, color, alpha=None):
if len(color) == 2:
self._thumb_color = get_color_from_hex(colors[color[0]][color[1]])
if alpha:
self._thumb_color[3] = alpha
elif len(color) == 4:
self._thumb_color = color
thumb_color = AliasProperty(_get_thumb_color, _set_thumb_color,
bind=['_thumb_color'])
_thumb_color_down = ListProperty([1, 1, 1, 1])
def _get_thumb_color_down(self):
return self._thumb_color_down
def _set_thumb_color_down(self, color, alpha=None):
if len(color) == 2:
self._thumb_color_down = get_color_from_hex(
colors[color[0]][color[1]])
if alpha:
self._thumb_color_down[3] = alpha
else:
self._thumb_color_down[3] = 1
elif len(color) == 4:
self._thumb_color_down = color
thumb_color_down = AliasProperty(_get_thumb_color_down,
_set_thumb_color_down,
bind=['_thumb_color_down'])
_thumb_color_disabled = ListProperty(
get_color_from_hex(colors['Grey']['400']))
def _get_thumb_color_disabled(self):
return self._thumb_color_disabled
def _set_thumb_color_disabled(self, color, alpha=None):
if len(color) == 2:
self._thumb_color_disabled = get_color_from_hex(
colors[color[0]][color[1]])
if alpha:
self._thumb_color_disabled[3] = alpha
elif len(color) == 4:
self._thumb_color_disabled = color
thumb_color_down = AliasProperty(_get_thumb_color_disabled,
_set_thumb_color_disabled,
bind=['_thumb_color_disabled'])
_track_color_active = ListProperty()
_track_color_normal = ListProperty()
_track_color_disabled = ListProperty()
_thumb_pos = ListProperty([0, 0])
def __init__(self, **kwargs):
super(MDSwitch, self).__init__(**kwargs)
self.theme_cls.bind(theme_style=self._set_colors,
primary_color=self._set_colors,
primary_palette=self._set_colors)
self._set_colors()
def _set_colors(self, *args):
self._track_color_normal = self.theme_cls.disabled_hint_text_color
if self.theme_cls.theme_style == 'Dark':
self._track_color_active = self.theme_cls.primary_color
self._track_color_active[3] = .5
self._track_color_disabled = get_color_from_hex('FFFFFF')
self._track_color_disabled[3] = .1
self.thumb_color = get_color_from_hex(colors['Grey']['400'])
self.thumb_color_down = get_color_from_hex(
colors[self.theme_cls.primary_palette]['200'])
self.thumb_color_disabled = get_color_from_hex(
colors['Grey']['800'])
else:
self._track_color_active = get_color_from_hex(
colors[self.theme_cls.primary_palette]['200'])
self._track_color_active[3] = .5
self._track_color_disabled = self.theme_cls.disabled_hint_text_color
self.thumb_color_down = self.theme_cls.primary_color
def on_pos(self, *args):
if self.active:
self._thumb_pos = (self.right - dp(12), self.center_y - dp(12))
else:
self._thumb_pos = (self.x - dp(12), self.center_y - dp(12))
self.bind(active=self._update_thumb)
def _update_thumb(self, *args):
if self.active:
Animation.cancel_all(self, '_thumb_pos')
anim = Animation(
_thumb_pos=(self.right - dp(12), self.center_y - dp(12)),
duration=.2,
t='out_quad')
else:
Animation.cancel_all(self, '_thumb_pos')
anim = Animation(
_thumb_pos=(self.x - dp(12), self.center_y - dp(12)),
duration=.2,
t='out_quad')
anim.start(self)