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,AliasProperty, BooleanProperty
from kivy.utils import get_color_from_hex
from kivy.metrics import dp, sp
from kivymd.color_definitions import colors
from kivymd.theming import ThemableBehavior
from kivy.uix.slider import Slider
Builder.load_string('''
#:import Thumb kivymd.selectioncontrols.Thumb
<MDSlider>:
id: slider
canvas:
Clear
Color:
rgba: self._track_color_disabled if self.disabled else (self._track_color_active if self.active \
else self._track_color_normal)
Rectangle:
size: (self.width - self.padding*2 - self._offset[0], dp(4)) if self.orientation == 'horizontal' \
else (dp(4),self.height - self.padding*2 - self._offset[1])
pos: (self.x + self.padding + self._offset[0], self.center_y - dp(4)) \
if self.orientation == 'horizontal' else (self.center_x - dp(4),self.y + self.padding + self._offset[1])
# If 0 draw circle
Color:
rgba: [0,0,0,0] if not self._is_off else (self._track_color_disabled if self.disabled \
else (self._track_color_active if self.active else self._track_color_normal))
Line:
width: 2
circle: (self.x+self.padding+dp(3),self.center_y-dp(2),8 if self.active else 6 ) \
if self.orientation == 'horizontal' else (self.center_x-dp(2),self.y+self.padding+dp(3),8 \
if self.active else 6)
Color:
rgba: [0,0,0,0] if self._is_off \
else (self.thumb_color_down if not self.disabled else self._track_color_disabled)
Rectangle:
size: ((self.width-self.padding*2)*self.value_normalized, sp(4)) \
if slider.orientation == 'horizontal' else (sp(4), (self.height-self.padding*2)*self.value_normalized)
pos: (self.x + self.padding, self.center_y - dp(4)) if self.orientation == 'horizontal' \
else (self.center_x - dp(4),self.y + self.padding)
Thumb:
id: thumb
size_hint: None, None
size: (dp(12), dp(12)) if root.disabled else ((dp(24), dp(24)) if root.active else (dp(16),dp(16)))
pos: (slider.value_pos[0] - dp(8), slider.center_y - thumb.height/2 - dp(2)) \
if slider.orientation == 'horizontal' \
else (slider.center_x - thumb.width/2 - dp(2), slider.value_pos[1]-dp(8))
color: [0,0,0,0] if slider._is_off else (root._track_color_disabled if root.disabled \
else root.thumb_color_down)
elevation: 0 if slider._is_off else (4 if root.active else 2)
''')
class MDSlider(ThemableBehavior, Slider):
# If the slider is clicked
active = BooleanProperty(False)
# Show the "off" ring when set to minimum value
show_off = BooleanProperty(True)
# Internal state of ring
_is_off = BooleanProperty(False)
# Internal adjustment to reposition sliders for ring
_offset = ListProperty((0, 0))
_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(MDSlider, 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):
if self.theme_cls.theme_style == 'Dark':
self._track_color_normal = get_color_from_hex('FFFFFF')
self._track_color_normal[3] = .3
self._track_color_active = self._track_color_normal
self._track_color_disabled = self._track_color_normal
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_normal = get_color_from_hex('000000')
self._track_color_normal[3] = 0.26
self._track_color_active = get_color_from_hex('000000')
self._track_color_active[3] = 0.38
self._track_color_disabled = get_color_from_hex('000000')
self._track_color_disabled[3] = 0.26
self.thumb_color_down = self.theme_cls.primary_color
def on_value_normalized(self, *args):
""" When the value == min set it to "off" state and make slider a ring """
self._update_is_off()
def on_show_off(self, *args):
self._update_is_off()
def _update_is_off(self):
self._is_off = self.show_off and (self.value_normalized == 0)
def on__is_off(self, *args):
self._update_offset()
def on_active(self, *args):
self._update_offset()
def _update_offset(self):
""" Offset is used to shift the sliders so the background color
shows through the off circle.
"""
d = 2 if self.active else 0
self._offset = (dp(11+d), dp(11+d)) if self._is_off else (0, 0)
def on_touch_down(self, touch):
if super(MDSlider, self).on_touch_down(touch):
self.active = True
def on_touch_up(self,touch):
if super(MDSlider, self).on_touch_up(touch):
self.active = False
# thumb = self.ids['thumb']
# if thumb.collide_point(*touch.pos):
# thumb.on_touch_down(touch)
# thumb.on_touch_up(touch)
if __name__ == '__main__':
from kivy.app import App
from kivymd.theming import ThemeManager
class SliderApp(App):
theme_cls = ThemeManager()
def build(self):
return Builder.load_string("""
BoxLayout:
orientation:'vertical'
BoxLayout:
size_hint_y:None
height: '48dp'
Label:
text:"Toggle disabled"
color: [0,0,0,1]
CheckBox:
on_press: slider.disabled = not slider.disabled
BoxLayout:
size_hint_y:None
height: '48dp'
Label:
text:"Toggle active"
color: [0,0,0,1]
CheckBox:
on_press: slider.active = not slider.active
BoxLayout:
size_hint_y:None
height: '48dp'
Label:
text:"Toggle show off"
color: [0,0,0,1]
CheckBox:
on_press: slider.show_off = not slider.show_off
MDSlider:
id:slider
min:0
max:100
value: 40
MDSlider:
id:slider2
orientation:"vertical"
min:0
max:100
value: 40
""")
SliderApp().run()