767 lines
21 KiB
Python
Executable File
767 lines
21 KiB
Python
Executable File
"""
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Components/SelectionControls
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============================
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.. seealso::
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`Material Design spec, Selection controls <https://material.io/components/selection-controls>`_
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.. rubric:: Selection controls allow the user to select options.
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/selection-controll.png
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:align: center
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`KivyMD` provides the following selection controls classes for use:
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- MDCheckbox_
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- MDSwitch_
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.. MDCheckbox:
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MDCheckbox
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----------
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.. code-block:: python
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from kivy.lang import Builder
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from kivymd.app import MDApp
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KV = '''
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MDFloatLayout:
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MDCheckbox:
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size_hint: None, None
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size: "48dp", "48dp"
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pos_hint: {'center_x': .5, 'center_y': .5}
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'''
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class Test(MDApp):
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def build(self):
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return Builder.load_string(KV)
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Test().run()
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/checkbox.gif
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:align: center
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.. Note:: Be sure to specify the size of the checkbox. By default, it is
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``(dp(48), dp(48))``, but the ripple effect takes up all the available
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space.
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Control state
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-------------
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.. code-block:: kv
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MDCheckbox:
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on_active: app.on_checkbox_active(*args)
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.. code-block:: python
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def on_checkbox_active(self, checkbox, value):
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if value:
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print('The checkbox', checkbox, 'is active', 'and', checkbox.state, 'state')
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else:
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print('The checkbox', checkbox, 'is inactive', 'and', checkbox.state, 'state')
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MDCheckbox with group
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---------------------
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.. code-block:: python
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from kivy.lang import Builder
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from kivymd.app import MDApp
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KV = '''
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<Check@MDCheckbox>:
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group: 'group'
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size_hint: None, None
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size: dp(48), dp(48)
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MDFloatLayout:
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Check:
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active: True
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pos_hint: {'center_x': .4, 'center_y': .5}
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Check:
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pos_hint: {'center_x': .6, 'center_y': .5}
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'''
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class Test(MDApp):
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def build(self):
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return Builder.load_string(KV)
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Test().run()
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/checkbox-group.gif
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:align: center
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.. MDSwitch:
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MDSwitch
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--------
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.. code-block:: python
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from kivy.lang import Builder
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from kivymd.app import MDApp
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KV = '''
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MDFloatLayout:
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MDSwitch:
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pos_hint: {'center_x': .5, 'center_y': .5}
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'''
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class Test(MDApp):
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def build(self):
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return Builder.load_string(KV)
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Test().run()
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/md-switch.gif
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:align: center
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.. Note:: For :class:`~MDSwitch` size is not required. By default it is
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``(dp(36), dp(48))``, but you can increase the width if you want.
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.. code-block:: kv
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MDSwitch:
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width: dp(64)
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/md-switch_width.png
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:align: center
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.. Note:: Control state of :class:`~MDSwitch` same way as in
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:class:`~MDCheckbox`.
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MDSwitch in M3 style
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--------------------
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.. code-block:: python
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from kivy.lang import Builder
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from kivymd.app import MDApp
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KV = '''
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MDScreen:
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MDSwitch:
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pos_hint: {'center_x': .5, 'center_y': .5}
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active: True
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'''
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class Test(MDApp):
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def build(self):
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self.theme_cls.material_style = "M3"
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return Builder.load_string(KV)
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Test().run()
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/checkbox-m3.gif
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:align: center
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"""
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__all__ = ("MDCheckbox", "MDSwitch")
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import os
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from kivy.animation import Animation
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from kivy.clock import Clock
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from kivy.lang import Builder
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from kivy.metrics import dp, sp
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from kivy.properties import (
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BooleanProperty,
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ColorProperty,
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ListProperty,
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StringProperty,
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)
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from kivy.uix.behaviors import ToggleButtonBehavior
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from kivy.uix.floatlayout import FloatLayout
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from kivymd import uix_path
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from kivymd.theming import ThemableBehavior
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from kivymd.uix.behaviors import CircularRippleBehavior, CommonElevationBehavior
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from kivymd.uix.floatlayout import MDFloatLayout
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from kivymd.uix.label import MDIcon
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with open(
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os.path.join(uix_path, "selectioncontrol", "selectioncontrol.kv"),
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encoding="utf-8",
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) as kv_file:
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Builder.load_string(kv_file.read())
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class MDCheckbox(CircularRippleBehavior, ToggleButtonBehavior, MDIcon):
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active = BooleanProperty(False)
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"""
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Indicates if the checkbox is active or inactive.
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:attr:`active` is a :class:`~kivy.properties.BooleanProperty`
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and defaults to `False`.
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"""
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checkbox_icon_normal = StringProperty("checkbox-blank-outline")
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"""
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Background icon of the checkbox used for the default graphical
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representation when the checkbox is not pressed.
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:attr:`checkbox_icon_normal` is a :class:`~kivy.properties.StringProperty`
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and defaults to `'checkbox-blank-outline'`.
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"""
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checkbox_icon_down = StringProperty("checkbox-marked")
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"""
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Background icon of the checkbox used for the default graphical
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representation when the checkbox is pressed.
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:attr:`checkbox_icon_down` is a :class:`~kivy.properties.StringProperty`
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and defaults to `'checkbox-marked'`.
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"""
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radio_icon_normal = StringProperty("checkbox-blank-circle-outline")
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"""
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Background icon (when using the ``group`` option) of the checkbox used for
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the default graphical representation when the checkbox is not pressed.
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:attr:`radio_icon_normal` is a :class:`~kivy.properties.StringProperty`
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and defaults to `'checkbox-blank-circle-outline'`.
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"""
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radio_icon_down = StringProperty("checkbox-marked-circle")
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"""
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Background icon (when using the ``group`` option) of the checkbox used for
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the default graphical representation when the checkbox is pressed.
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:attr:`radio_icon_down` is a :class:`~kivy.properties.StringProperty`
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and defaults to `'checkbox-marked-circle'`.
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"""
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color_active = ColorProperty(None)
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"""
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Color when the checkbox is in the active state.
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDCheckbox:
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color_active: "red"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/checkbox-color-active.png
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:align: center
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:attr:`color_active` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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color_inactive = ColorProperty(None)
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"""
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Color when the checkbox is in the inactive state.
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDCheckbox:
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color_inactive: "blue"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/checkbox-color-inactive.png
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:align: center
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:attr:`color_inactive` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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disabled_color = ColorProperty(None)
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"""
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Color when the checkbox is in the disabled state.
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.. code-block:: kv
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MDCheckbox:
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disabled_color: "lightgrey"
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disabled: True
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active: True
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/checkbox-disabled-color.png
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:align: center
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:attr:`disabled_color` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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# Deprecated property.
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selected_color = ColorProperty(None, deprecated=True)
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"""
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Color when the checkbox is in the active state.
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.. deprecated:: 1.0.0
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Use :attr:`color_active` instead.
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:attr:`selected_color` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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unselected_color = ColorProperty(None, deprecated=True)
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"""
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Color when the checkbox is in the inactive state.
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.. deprecated:: 1.0.0
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Use :attr:`color_inactive` instead.
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:attr:`unselected_color` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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_current_color = ColorProperty([0.0, 0.0, 0.0, 0.0])
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def __init__(self, **kwargs):
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self.check_anim_out = Animation(font_size=0, duration=0.1, t="out_quad")
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self.check_anim_in = Animation(
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font_size=sp(24), duration=0.1, t="out_quad"
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)
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super().__init__(**kwargs)
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self.color_active = self.theme_cls.primary_color
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self.color_inactive = self.theme_cls.secondary_text_color
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self.disabled_color = self.theme_cls.divider_color
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self._current_color = self.color_inactive
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self.check_anim_out.bind(
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on_complete=lambda *x: self.check_anim_in.start(self)
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)
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self.bind(
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checkbox_icon_normal=self.update_icon,
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checkbox_icon_down=self.update_icon,
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radio_icon_normal=self.update_icon,
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radio_icon_down=self.update_icon,
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group=self.update_icon,
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color_active=self.update_color,
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color_inactive=self.update_color,
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disabled_color=self.update_color,
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disabled=self.update_color,
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state=self.update_color,
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)
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self.theme_cls.bind(
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theme_style=self.update_primary_color,
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primary_color=self.update_primary_color,
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)
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self.update_icon()
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self.update_color()
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def update_primary_color(self, instance, value) -> None:
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if value in ("Dark", "Light"):
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if not self.disabled:
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self.color = self.theme_cls.primary_color
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else:
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self.color = self.disabled_color
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else:
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self.color_active = value
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def update_icon(self, *args) -> None:
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if self.state == "down":
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self.icon = (
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self.radio_icon_down if self.group else self.checkbox_icon_down
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)
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else:
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self.icon = (
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self.radio_icon_normal
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if self.group
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else self.checkbox_icon_normal
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)
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def update_color(self, *args) -> None:
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if self.disabled:
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self._current_color = self.disabled_color
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elif self.state == "down":
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self._current_color = self.color_active
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else:
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self._current_color = self.color_inactive
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def on_state(self, *args) -> None:
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if self.state == "down":
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self.check_anim_in.cancel(self)
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self.check_anim_out.start(self)
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self.update_icon()
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if self.group:
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self._release_group(self)
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self.active = True
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else:
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self.check_anim_in.cancel(self)
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if not self.group:
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self.check_anim_out.start(self)
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self.update_icon()
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self.active = False
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def on_active(self, *args) -> None:
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self.state = "down" if self.active else "normal"
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class ThumbIcon(MDIcon):
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"""
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Implements icon for the :class:`~Thumb` widget.
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.. versionadded:: 1.0.0
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"""
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class Thumb(
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CommonElevationBehavior,
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CircularRippleBehavior,
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MDFloatLayout,
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):
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"""
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Implements a thumb for the :class:`~MDSwitch` widget.
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"""
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def _set_ellipse(self, instance, value):
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self.ellipse.size = (self._ripple_rad, self._ripple_rad)
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if self.ellipse.size[0] > self.width * 1.5 and not self._fading_out:
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self.fade_out()
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self.ellipse.pos = (
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self.center_x - self._ripple_rad / 2.0,
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self.center_y - self._ripple_rad / 2.0,
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)
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self.stencil.pos = (
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self.center_x - (self.width * self.ripple_scale) / 2,
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self.center_y - (self.height * self.ripple_scale) / 2,
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)
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class MDSwitch(ThemableBehavior, FloatLayout):
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active = BooleanProperty(False)
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"""
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Indicates if the switch is active or inactive.
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:attr:`active` is a :class:`~kivy.properties.BooleanProperty`
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and defaults to `False`.
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"""
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icon_active = StringProperty()
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"""
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Thumb icon when the switch is in the active state (only M3 style).
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDSwitch:
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active: True
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icon_active: "check"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-icon-active.png
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:align: center
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:attr:`icon_active` is a :class:`~kivy.properties.StringProperty`
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and defaults to `''`.
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"""
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icon_inactive = StringProperty()
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"""
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Thumb icon when the switch is in an inactive state (only M3 style).
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDSwitch:
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icon_inactive: "close"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-icon-inactive.png
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:align: center
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:attr:`icon_inactive` is a :class:`~kivy.properties.StringProperty`
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and defaults to `''`.
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"""
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icon_active_color = ColorProperty(None)
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"""
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Thumb icon color when the switch is in the active state (only M3 style).
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDSwitch:
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active: True
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icon_active: "check"
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icon_active_color: "white"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-icon-active-color.png
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:align: center
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:attr:`icon_active_color` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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icon_inactive_color = ColorProperty(None)
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"""
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Thumb icon color when the switch is in an inactive state (only M3 style).
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDSwitch:
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icon_inactive: "close"
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icon_inactive_color: "grey"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-icon-inactive-color.png
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:align: center
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:attr:`icon_inactive_color` is a :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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"""
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thumb_color_active = ColorProperty(None)
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"""
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The color of the thumb when the switch is active.
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDSwitch:
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active: True
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thumb_color_active: "brown"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-thumb-color-active.png
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:align: center
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:attr:`thumb_color_active` is an :class:`~kivy.properties.ColorProperty`
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and default to `None`.
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"""
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thumb_color_inactive = ColorProperty(None)
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"""
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The color of the thumb when the switch is inactive.
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.. versionadded:: 1.0.0
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.. code-block:: kv
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MDSwitch:
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thumb_color_inactive: "brown"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-thumb-color-inactive.png
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:align: center
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:attr:`thumb_color_inactive` is an :class:`~kivy.properties.ColorProperty`
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and default to `None`.
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"""
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thumb_color_disabled = ColorProperty(None)
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"""
|
|
The color of the thumb when the switch is in the disabled state.
|
|
|
|
.. code-block:: kv
|
|
|
|
MDSwitch:
|
|
active: True
|
|
thumb_color_disabled: "brown"
|
|
disabled: True
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-thumb-color-disabled.png
|
|
:align: center
|
|
|
|
:attr:`thumb_color_disabled` is an :class:`~kivy.properties.ColorProperty`
|
|
and default to `None`.
|
|
"""
|
|
|
|
track_color_active = ColorProperty(None)
|
|
"""
|
|
The color of the track when the switch is active.
|
|
|
|
.. code-block:: kv
|
|
|
|
MDSwitch:
|
|
active: True
|
|
track_color_active: "red"
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-track-color-active.png
|
|
:align: center
|
|
|
|
:attr:`track_color_active` is an :class:`~kivy.properties.ColorProperty`
|
|
and default to `None`.
|
|
"""
|
|
|
|
track_color_inactive = ColorProperty(None)
|
|
"""
|
|
The color of the track when the switch is inactive.
|
|
|
|
.. versionadded:: 1.0.0
|
|
|
|
.. code-block:: kv
|
|
|
|
MDSwitch:
|
|
track_color_inactive: "red"
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-track-color-inactive.png
|
|
:align: center
|
|
|
|
:attr:`track_color_inactive` is an :class:`~kivy.properties.ColorProperty`
|
|
and default to `None`.
|
|
"""
|
|
|
|
track_color_disabled = ColorProperty(None)
|
|
"""
|
|
The color of the track when the switch is in the disabled state.
|
|
|
|
.. code-block:: kv
|
|
|
|
MDSwitch:
|
|
track_color_disabled: "lightgrey"
|
|
disabled: True
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-track-color-disabled.png
|
|
:align: center
|
|
|
|
:attr:`track_color_disabled` is an :class:`~kivy.properties.ColorProperty`
|
|
and default to `None`.
|
|
"""
|
|
|
|
_thumb_pos = ListProperty([0, 0])
|
|
|
|
def __init__(self, **kwargs):
|
|
super().__init__(**kwargs)
|
|
self.bind(icon_active=self.set_icon, icon_inactive=self.set_icon)
|
|
self.size_hint = (None, None)
|
|
self.size = (dp(36), dp(48))
|
|
Clock.schedule_once(self._check_style)
|
|
Clock.schedule_once(lambda x: self._update_thumb_pos(animation=False))
|
|
Clock.schedule_once(lambda x: self.on_active(self, self.active))
|
|
|
|
def set_icon(self, instance_switch, icon_value: str) -> None:
|
|
def set_icon(*args):
|
|
icon = icon_value if icon_value else "blank"
|
|
self.ids.thumb.ids.icon.icon = icon
|
|
|
|
Clock.schedule_once(set_icon, 0.2)
|
|
|
|
def on_active(self, instance_switch, active_value: bool) -> None:
|
|
if self.theme_cls.material_style == "M3" and self.widget_style != "ios":
|
|
size = (
|
|
(
|
|
(dp(16), dp(16))
|
|
if not self.icon_inactive
|
|
else (dp(24), dp(24))
|
|
)
|
|
if not active_value
|
|
else (dp(24), dp(24))
|
|
)
|
|
icon = "blank"
|
|
color = (0, 0, 0, 0)
|
|
|
|
if self.icon_active and active_value:
|
|
icon = self.icon_active
|
|
color = (
|
|
self.icon_active_color
|
|
if self.icon_active_color
|
|
else self.theme_cls.text_color
|
|
)
|
|
elif self.icon_inactive and not active_value:
|
|
icon = self.icon_inactive
|
|
color = (
|
|
self.icon_inactive_color
|
|
if self.icon_inactive_color
|
|
else self.theme_cls.text_color
|
|
)
|
|
|
|
Animation(size=size, t="out_quad", d=0.2).start(self.ids.thumb)
|
|
Animation(color=color, t="out_quad", d=0.2).start(
|
|
self.ids.thumb.ids.icon
|
|
)
|
|
self.set_icon(self, icon)
|
|
|
|
self._update_thumb_pos()
|
|
|
|
# FIXME: If you move the cursor from the switch during the
|
|
# `on_touch_down` event, the animation of returning the thumb to
|
|
# the previous size does not work. The following code fixes this.
|
|
def on_thumb_down(self) -> None:
|
|
"""
|
|
Called at the on_touch_down event of the :class:`~Thumb` object.
|
|
Indicates the state of the switch "on/off" by an animation of
|
|
increasing the size of the thumb.
|
|
"""
|
|
|
|
if self.widget_style != "ios" and self.theme_cls.material_style == "M3":
|
|
if self.active:
|
|
size = (dp(28), dp(28))
|
|
pos = (
|
|
self.ids.thumb.pos[0] - dp(2),
|
|
self.ids.thumb.pos[1] - dp(1.8),
|
|
)
|
|
else:
|
|
size = (dp(26), dp(26))
|
|
pos = (
|
|
(
|
|
self.ids.thumb.pos[0] - dp(5),
|
|
self.ids.thumb.pos[1] - dp(5),
|
|
)
|
|
if not self.icon_inactive
|
|
else (
|
|
self.ids.thumb.pos[0] + dp(1),
|
|
self.ids.thumb.pos[1] - dp(1),
|
|
)
|
|
)
|
|
Animation(size=size, pos=pos, t="out_quad", d=0.2).start(
|
|
self.ids.thumb
|
|
)
|
|
|
|
def _update_thumb_pos(self, *args, animation=True):
|
|
if self.active:
|
|
_thumb_pos = (
|
|
self.width
|
|
- (
|
|
dp(14)
|
|
if self.widget_style == "ios"
|
|
or self.theme_cls.material_style == "M2"
|
|
else dp(28)
|
|
),
|
|
self.height / 2
|
|
- (
|
|
dp(12)
|
|
if self.widget_style == "ios"
|
|
or self.theme_cls.material_style == "M2"
|
|
else dp(16)
|
|
),
|
|
)
|
|
else:
|
|
_thumb_pos = (
|
|
0 if not self.icon_inactive else dp(-14),
|
|
self.height / 2
|
|
- (
|
|
dp(12)
|
|
if self.widget_style == "ios"
|
|
or self.theme_cls.material_style == "M2"
|
|
else dp(16)
|
|
),
|
|
)
|
|
Animation.cancel_all(self, "_thumb_pos")
|
|
|
|
if animation:
|
|
Animation(_thumb_pos=_thumb_pos, duration=0.2, t="out_quad").start(
|
|
self
|
|
)
|
|
else:
|
|
self._thumb_pos = _thumb_pos
|
|
|
|
def _check_style(self, *args):
|
|
if self.widget_style == "ios" or self.theme_cls.material_style == "M2":
|
|
self.set_icon(self, "")
|