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Sideband/sbapp/kivymd/theming.py
Mark Qvist 540a533900 Retain bindings for theme switching
2022-10-08 17:19:20 +02:00

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"""
Themes/Theming
==============
.. seealso::
`Material Design spec, Material theming <https://material.io/design/material-theming>`_
Material App
------------
The main class of your application, which in `Kivy` inherits from the
:class:`~kivy.app.App` class, in `KivyMD` must inherit from the
:class:`~kivymd.app.MDApp` class. The :class:`~kivymd.app.MDApp` class has
properties that allow you to control application properties such as
:attr:`color/style/font` of interface elements and much more.
Control material properties
---------------------------
The main application class inherited from the :class:`~kivymd.app.MDApp` class
has the :attr:`~kivymd.app.MDApp.theme_cls` attribute, with which you control
the material properties of your application.
Changing the theme colors
-------------------------
The standard theme_cls is designed to provide the standard themes and colors as
defined by Material Design.
We do not recommend that you change this.
However, if you do need to change the standard colors, for instance to meet branding
guidelines, you can do this by overloading the `color_definitions.py` object.
Create a custom color defintion object. This should have the same format as
the `colors <https://kivymd.readthedocs.io/en/latest/themes/color-definitions/#module-kivymd.color_definitions>`_
object in `color_definitions.py` and contain definitions for at least the
primary color, the accent color and the Light and Dark backgrounds.
.. note:: Your custom colors *must* use the names of the
`existing colors as defined in the palette <https://kivymd.readthedocs.io/en/latest/themes/color-definitions/#kivymd.color_definitions.palette>`_
e.g. You can have `Blue` but you cannot have `NavyBlue`.
Add the custom theme to the :class:`~kivymd.app.MDApp` as shown in the
following snippet.
.. tabs::
.. tab:: Imperative python style with KV
.. code-block:: python
from kivy.lang import Builder
from kivy.properties import ObjectProperty
from kivymd.app import MDApp
from kivymd.uix.floatlayout import MDFloatLayout
from kivymd.uix.tab import MDTabsBase
from kivymd.icon_definitions import md_icons
colors = {
"Teal": {
"200": "#212121",
"500": "#212121",
"700": "#212121",
},
"Red": {
"200": "#C25554",
"500": "#C25554",
"700": "#C25554",
},
"Light": {
"StatusBar": "E0E0E0",
"AppBar": "#202020",
"Background": "#2E3032",
"CardsDialogs": "#FFFFFF",
"FlatButtonDown": "#CCCCCC",
},
}
KV = '''
MDBoxLayout:
orientation: "vertical"
MDTopAppBar:
title: "Custom theme"
MDTabs:
id: tabs
<Tab>
MDIconButton:
id: icon
icon: root.icon
icon_size: "48sp"
theme_icon_color: "Custom"
icon_color: "white"
pos_hint: {"center_x": .5, "center_y": .5}
'''
class Tab(MDFloatLayout, MDTabsBase):
'''Class implementing content for a tab.'''
icon = ObjectProperty()
class Example(MDApp):
icons = list(md_icons.keys())[15:30]
def build(self):
self.theme_cls.colors = colors
self.theme_cls.primary_palette = "Teal"
self.theme_cls.accent_palette = "Red"
return Builder.load_string(KV)
def on_start(self):
for name_tab in self.icons:
tab = Tab(title="This is " + name_tab, icon=name_tab)
self.root.ids.tabs.add_widget(tab)
Example().run()
.. tab:: Declarative python style
.. code-block:: python
from kivy.properties import ObjectProperty
from kivymd.app import MDApp
from kivymd.uix.boxlayout import MDBoxLayout
from kivymd.uix.button import MDIconButton
from kivymd.uix.floatlayout import MDFloatLayout
from kivymd.uix.tab import MDTabsBase, MDTabs
from kivymd.icon_definitions import md_icons
from kivymd.uix.toolbar import MDTopAppBar
colors = {
"Teal": {
"200": "#212121",
"500": "#212121",
"700": "#212121",
},
"Red": {
"200": "#C25554",
"500": "#C25554",
"700": "#C25554",
},
"Light": {
"StatusBar": "E0E0E0",
"AppBar": "#202020",
"Background": "#2E3032",
"CardsDialogs": "#FFFFFF",
"FlatButtonDown": "#CCCCCC",
},
}
class Tab(MDFloatLayout, MDTabsBase):
'''Class implementing content for a tab.'''
icon = ObjectProperty()
class Example(MDApp):
icons = list(md_icons.keys())[15:30]
def build(self):
self.theme_cls.colors = colors
self.theme_cls.primary_palette = "Teal"
self.theme_cls.accent_palette = "Red"
return (
MDBoxLayout(
MDTopAppBar(title="Custom theme"),
MDTabs(id="tabs"),
orientation="vertical",
)
)
def on_start(self):
for name_tab in self.icons:
self.root.ids.tabs.add_widget(
Tab(
MDIconButton(
icon=name_tab,
icon_size="48sp",
theme_icon_color="Custom",
icon_color="white",
pos_hint={"center_x": .5, "center_y": .5},
),
title="This is " + name_tab,
icon=name_tab,
)
)
Example().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/custom-color.png
:align: center
This will change the theme colors to your custom definition. In all other
respects, the theming stays as documented.
.. warning:: Please note that the key ``'Red'`` is a required key for the
dictionary :attr:`kivymd.color_definition.colors`.
"""
from kivy.animation import Animation
from kivy.app import App
from kivy.clock import Clock
from kivy.core.window import Window
from kivy.event import EventDispatcher
from kivy.metrics import dp
from kivy.properties import (
AliasProperty,
BooleanProperty,
ColorProperty,
DictProperty,
NumericProperty,
ObjectProperty,
OptionProperty,
StringProperty,
)
from kivy.utils import get_color_from_hex
from kivymd.color_definitions import colors, hue, palette
from kivymd.font_definitions import theme_font_styles
from kivymd.material_resources import DEVICE_IOS, DEVICE_TYPE
class ThemeManager(EventDispatcher):
primary_palette = OptionProperty("Blue", options=palette)
"""
The name of the color scheme that the application will use.
All major `material` components will have the color
of the specified color theme.
Available options are: `'Red'`, `'Pink'`, `'Purple'`, `'DeepPurple'`,
`'Indigo'`, `'Blue'`, `'LightBlue'`, `'Cyan'`, `'Teal'`, `'Green'`,
`'LightGreen'`, `'Lime'`, `'Yellow'`, `'Amber'`, `'Orange'`, `'DeepOrange'`,
`'Brown'`, `'Gray'`, `'BlueGray'`.
To change the color scheme of an application:
.. tabs::
.. tab:: Imperative python style with KV
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
MDScreen:
MDRectangleFlatButton:
text: "Hello, World"
pos_hint: {"center_x": .5, "center_y": .5}
'''
class Example(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Red" # "Purple", "Red"
return Builder.load_string(KV)
Example().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.button import MDRectangleFlatButton
from kivymd.uix.screen import MDScreen
class Example(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Orange" # "Purple", "Red"
return (
MDScreen(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
)
)
)
Example().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/primary-palette.png
:align: center
:attr:`primary_palette` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'Blue'`.
"""
primary_hue = OptionProperty("500", options=hue)
"""
The color hue of the application.
Available options are: `'50'`, `'100'`, `'200'`, `'300'`, `'400'`, `'500'`,
`'600'`, `'700'`, `'800'`, `'900'`, `'A100'`, `'A200'`, `'A400'`, `'A700'`.
To change the hue color scheme of an application:
.. tabs::
.. tab:: Imperative python style with KV
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.button import MDRectangleFlatButton
class MainApp(MDApp):
def build(self):
self.theme_cls.primary_palette = "Orange"
self.theme_cls.primary_hue = "200" # "500"
screen = MDScreen()
screen.add_widget(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
)
)
return screen
MainApp().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.button import MDRectangleFlatButton
from kivymd.uix.screen import MDScreen
class Example(MDApp):
def build(self):
self.theme_cls.primary_palette = "Orange"
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_hue = "200" # "500"
return (
MDScreen(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
)
)
)
Example().run()
With a value of ``self.theme_cls.primary_hue = "200"`` and ``self.theme_cls.primary_hue = "500"``:
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/primary_hue.png
:align: center
:attr:`primary_hue` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'500'`.
"""
primary_light_hue = OptionProperty("200", options=hue)
"""
Hue value for :attr:`primary_light`.
:attr:`primary_light_hue` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'200'`.
"""
primary_dark_hue = OptionProperty("700", options=hue)
"""
Hue value for :attr:`primary_dark`.
:attr:`primary_light_hue` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'700'`.
"""
def _get_primary_color(self) -> list:
return get_color_from_hex(
self.colors[self.primary_palette][self.primary_hue]
)
primary_color = AliasProperty(
_get_primary_color, bind=("primary_palette", "primary_hue")
)
"""
The color of the current application theme.
:attr:`primary_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value of the current application theme, property is readonly.
"""
def _get_primary_light(self) -> list:
return get_color_from_hex(
self.colors[self.primary_palette][self.primary_light_hue]
)
primary_light = AliasProperty(
_get_primary_light, bind=("primary_palette", "primary_light_hue")
)
"""
Colors of the current application color theme (in lighter color).
.. tabs::
.. tab:: Declarative style with KV
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
MDScreen:
MDRaisedButton:
text: "primary_light"
pos_hint: {"center_x": 0.5, "center_y": 0.7}
md_bg_color: app.theme_cls.primary_light
MDRaisedButton:
text: "primary_color"
pos_hint: {"center_x": 0.5, "center_y": 0.5}
MDRaisedButton:
text: "primary_dark"
pos_hint: {"center_x": 0.5, "center_y": 0.3}
md_bg_color: app.theme_cls.primary_dark
'''
class MainApp(MDApp):
def build(self):
self.theme_cls.primary_palette = "Orange"
self.theme_cls.theme_style = "Dark"
return Builder.load_string(KV)
MainApp().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.button import MDRaisedButton
from kivymd.uix.screen import MDScreen
class Example(MDApp):
def build(self):
self.theme_cls.primary_palette = "Orange"
self.theme_cls.theme_style = "Dark"
return (
MDScreen(
MDRaisedButton(
text="Primary light",
pos_hint={"center_x": 0.5, "center_y": 0.7},
md_bg_color=self.theme_cls.primary_light,
),
MDRaisedButton(
text="Primary color",
pos_hint={"center_x": 0.5, "center_y": 0.5},
),
MDRaisedButton(
text="Primary dark",
pos_hint={"center_x": 0.5, "center_y": 0.3},
md_bg_color=self.theme_cls.primary_dark,
),
)
)
Example().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/primary-colors-light-dark.png
:align: center
:attr:`primary_light` is an :class:`~kivy.properties.AliasProperty` that
returns the value of the current application theme (in lighter color),
property is readonly.
"""
def _get_primary_dark(self) -> list:
return get_color_from_hex(
self.colors[self.primary_palette][self.primary_dark_hue]
)
primary_dark = AliasProperty(
_get_primary_dark, bind=("primary_palette", "primary_dark_hue")
)
"""
Colors of the current application color theme (in darker color).
:attr:`primary_dark` is an :class:`~kivy.properties.AliasProperty` that
returns the value of the current application theme (in darker color),
property is readonly.
"""
accent_palette = OptionProperty("Amber", options=palette)
"""
The application color palette used for items such as the tab indicator
in the :class:`~kivymd.uix.tab.MDTabsBar` class and so on.
See :attr:`kivymd.uix.tab.MDTabsBar.indicator_color` attribute.
:attr:`accent_palette` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'Amber'`.
"""
accent_hue = OptionProperty("500", options=hue)
"""
Similar to :attr:`primary_hue`, but returns a value for :attr:`accent_palette`.
:attr:`accent_hue` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'500'`.
"""
accent_light_hue = OptionProperty("200", options=hue)
"""
Hue value for :attr:`accent_light`.
:attr:`accent_light_hue` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'200'`.
"""
accent_dark_hue = OptionProperty("700", options=hue)
"""
Hue value for :attr:`accent_dark`.
:attr:`accent_dark_hue` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'700'`.
"""
def _get_accent_color(self) -> list:
return get_color_from_hex(
self.colors[self.accent_palette][self.accent_hue]
)
accent_color = AliasProperty(
_get_accent_color, bind=["accent_palette", "accent_hue"]
)
"""
Similar to :attr:`primary_color`, but returns a value for :attr:`accent_color`.
:attr:`accent_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`accent_color`, property is
readonly.
"""
def _get_accent_light(self) -> list:
return get_color_from_hex(
self.colors[self.accent_palette][self.accent_light_hue]
)
accent_light = AliasProperty(
_get_accent_light, bind=["accent_palette", "accent_light_hue"]
)
"""
Similar to :attr:`primary_light`, but returns a value for :attr:`accent_light`.
:attr:`accent_light` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`accent_light`, property is
readonly.
"""
def _get_accent_dark(self) -> list:
return get_color_from_hex(
self.colors[self.accent_palette][self.accent_dark_hue]
)
accent_dark = AliasProperty(
_get_accent_dark, bind=["accent_palette", "accent_dark_hue"]
)
"""
Similar to :attr:`primary_dark`, but returns a value for :attr:`accent_dark`.
:attr:`accent_dark` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`accent_dark`, property is
readonly.
"""
material_style = OptionProperty("M2", options=["M2", "M3"])
"""
Material design style.
Available options are: 'M2', 'M3'.
.. versionadded:: 1.0.0
.. seealso::
`Material Design 2 <https://material.io/>`_ and
`Material Design 3 <https://m3.material.io>`_
:attr:`material_style` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'M2'`.
"""
theme_style_switch_animation = BooleanProperty(False)
"""
Animate app colors when switching app color scheme ('Dark/light').
.. versionadded:: 1.1.0
.. tabs::
.. tab:: Declarative KV style
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
MDScreen:
MDCard:
orientation: "vertical"
padding: 0, 0, 0 , "36dp"
size_hint: .5, .5
pos_hint: {"center_x": .5, "center_y": .5}
elevation: 4
shadow_radius: 6
shadow_offset: 0, 2
MDLabel:
text: "Theme style - {}".format(app.theme_cls.theme_style)
halign: "center"
valign: "center"
bold: True
font_style: "H5"
MDRaisedButton:
text: "Set theme"
on_release: app.switch_theme_style()
pos_hint: {"center_x": .5}
'''
class Example(MDApp):
def build(self):
self.theme_cls.theme_style_switch_animation = True
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Orange"
return Builder.load_string(KV)
def switch_theme_style(self):
self.theme_cls.primary_palette = (
"Orange" if self.theme_cls.primary_palette == "Red" else "Red"
)
self.theme_cls.theme_style = (
"Dark" if self.theme_cls.theme_style == "Light" else "Light"
)
Example().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.button import MDRaisedButton
from kivymd.uix.card import MDCard
from kivymd.uix.label import MDLabel
from kivymd.uix.screen import MDScreen
class Example(MDApp):
def build(self):
self.theme_cls.theme_style_switch_animation = True
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Orange"
return (
MDScreen(
MDCard(
MDLabel(
id="label",
text="Theme style - {}".format(self.theme_cls.theme_style),
halign="center",
valign="center",
bold=True,
font_style="H5",
),
MDRaisedButton(
text="Set theme",
on_release=self.switch_theme_style,
pos_hint={"center_x": 0.5},
),
id="card",
orientation="vertical",
padding=(0, 0, 0, "36dp"),
size_hint=(0.5, 0.5),
pos_hint={"center_x": 0.5, "center_y": 0.5},
elevation=4,
shadow_radius=6,
shadow_offset=(0, 2),
)
)
)
def switch_theme_style(self, *args):
self.theme_cls.primary_palette = (
"Orange" if self.theme_cls.primary_palette == "Red" else "Red"
)
self.theme_cls.theme_style = (
"Dark" if self.theme_cls.theme_style == "Light" else "Light"
)
self.root.ids.card.ids.label.text = (
"Theme style - {}".format(self.theme_cls.theme_style)
)
Example().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/theme-style-switch-animation.gif
:align: center
:attr:`theme_style_switch_animation` is an :class:`~kivy.properties.BooleanProperty`
and defaults to `False`.
"""
theme_style_switch_animation_duration = NumericProperty(0.2)
"""
Duration of the animation of switching the color scheme of the application
("Dark/light").
.. versionadded:: 1.1.0
.. code-block:: python
class Example(MDApp):
def build(self):
self.theme_cls.theme_style_switch_animation = True
self.theme_cls.theme_style_switch_animation_duration = 0.8
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/theme-style-switch-animation-duration.gif
:align: center
:attr:`theme_style_switch_animation_duration` is an :class:`~kivy.properties.NumericProperty`
and defaults to `0.2`.
"""
theme_style = OptionProperty("Light", options=["Light", "Dark"])
"""
App theme style.
.. tabs::
.. tab:: Imperative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.button import MDRectangleFlatButton
class MainApp(MDApp):
def build(self):
self.theme_cls.primary_palette = "Orange"
self.theme_cls.theme_style = "Dark" # "Light"
screen = MDScreen()
screen.add_widget(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
)
)
return screen
MainApp().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.button import MDRectangleFlatButton
from kivymd.uix.screen import MDScreen
class Example(MDApp):
def build(self):
self.theme_cls.primary_palette = "Orange"
self.theme_cls.theme_style = "Dark" # "Light"
return (
MDScreen(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
),
)
)
Example().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/theme-style.png
:align: center
:attr:`theme_style` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'Light'`.
"""
def _get_theme_style(self, opposite: bool) -> str:
if opposite:
return "Light" if self.theme_style == "Dark" else "Dark"
else:
return self.theme_style
def _get_bg_darkest(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
return get_color_from_hex(self.colors["Light"]["StatusBar"])
elif theme_style == "Dark":
return get_color_from_hex(self.colors["Dark"]["StatusBar"])
bg_darkest = AliasProperty(_get_bg_darkest, bind=["theme_style"])
"""
Similar to :attr:`bg_dark`,
but the color values are a tone lower (darker) than :attr:`bg_dark`.
.. tabs::
.. tab:: Declarative style with KV
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
MDBoxLayout:
MDWidget:
md_bg_color: app.theme_cls.bg_light
MDBoxLayout:
md_bg_color: app.theme_cls.bg_normal
MDBoxLayout:
md_bg_color: app.theme_cls.bg_dark
MDBoxLayout:
md_bg_color: app.theme_cls.bg_darkest
'''
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark" # "Light"
return Builder.load_string(KV)
MainApp().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.boxlayout import MDBoxLayout
from kivymd.uix.widget import MDWidget
class Example(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark" # "Light"
return (
MDBoxLayout(
MDWidget(
md_bg_color=self.theme_cls.bg_light,
),
MDWidget(
md_bg_color=self.theme_cls.bg_normal,
),
MDWidget(
md_bg_color=self.theme_cls.bg_dark,
),
MDWidget(
md_bg_color=self.theme_cls.bg_darkest,
),
)
)
Example().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/bg-normal-dark-darkest.png
:align: center
:attr:`bg_darkest` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`bg_darkest`,
property is readonly.
"""
def _get_op_bg_darkest(self) -> list:
return self._get_bg_darkest(True)
opposite_bg_darkest = AliasProperty(
_get_op_bg_darkest, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`bg_darkest`.
:attr:`opposite_bg_darkest` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`opposite_bg_darkest`,
property is readonly.
"""
def _get_bg_dark(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
return get_color_from_hex(self.colors["Light"]["AppBar"])
elif theme_style == "Dark":
return get_color_from_hex(self.colors["Dark"]["AppBar"])
bg_dark = AliasProperty(_get_bg_dark, bind=["theme_style"])
"""
Similar to :attr:`bg_normal`,
but the color values are one tone lower (darker) than :attr:`bg_normal`.
:attr:`bg_dark` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`bg_dark`,
property is readonly.
"""
def _get_op_bg_dark(self) -> list:
return self._get_bg_dark(True)
opposite_bg_dark = AliasProperty(_get_op_bg_dark, bind=["theme_style"])
"""
The opposite value of color in the :attr:`bg_dark`.
:attr:`opposite_bg_dark` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`opposite_bg_dark`,
property is readonly.
"""
def _get_bg_normal(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
return get_color_from_hex(self.colors["Light"]["Background"])
elif theme_style == "Dark":
return get_color_from_hex(self.colors["Dark"]["Background"])
bg_normal = AliasProperty(_get_bg_normal, bind=["theme_style"])
"""
Similar to :attr:`bg_light`,
but the color values are one tone lower (darker) than :attr:`bg_light`.
:attr:`bg_normal` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`bg_normal`,
property is readonly.
"""
def _get_op_bg_normal(self) -> list:
return self._get_bg_normal(True)
opposite_bg_normal = AliasProperty(_get_op_bg_normal, bind=["theme_style"])
"""
The opposite value of color in the :attr:`bg_normal`.
:attr:`opposite_bg_normal` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`opposite_bg_normal`,
property is readonly.
"""
def _get_bg_light(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
return get_color_from_hex(self.colors["Light"]["CardsDialogs"])
elif theme_style == "Dark":
return get_color_from_hex(self.colors["Dark"]["CardsDialogs"])
bg_light = AliasProperty(_get_bg_light, bind=["theme_style"])
""""
Depending on the style of the theme (`'Dark'` or `'Light`')
that the application uses, :attr:`bg_light` contains the color value
in ``rgba`` format for the widgets background.
:attr:`bg_light` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`bg_light`,
property is readonly.
"""
def _get_op_bg_light(self) -> list:
return self._get_bg_light(True)
opposite_bg_light = AliasProperty(_get_op_bg_light, bind=["theme_style"])
"""
The opposite value of color in the :attr:`bg_light`.
:attr:`opposite_bg_light` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`opposite_bg_light`,
property is readonly.
"""
def _get_divider_color(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
color = get_color_from_hex("000000")
elif theme_style == "Dark":
color = get_color_from_hex("FFFFFF")
color[3] = 0.12
return color
divider_color = AliasProperty(_get_divider_color, bind=["theme_style"])
"""
Color for dividing lines such as :class:`~kivymd.uix.card.MDSeparator`.
:attr:`divider_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`divider_color`,
property is readonly.
"""
def _get_op_divider_color(self) -> list:
return self._get_divider_color(True)
opposite_divider_color = AliasProperty(
_get_op_divider_color, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`divider_color`.
:attr:`opposite_divider_color` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`opposite_divider_color`,
property is readonly.
"""
def _get_disabled_primary_color(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
lum = sum(self.primary_color[0:3]) / 3.0
if theme_style == "Light":
a = 0.38
elif theme_style == "Dark":
a = 0.50
return [lum, lum, lum, a]
disabled_primary_color = AliasProperty(
_get_disabled_primary_color, bind=["theme_style"]
)
"""
The greyscale disabled version of the current application theme color
in ``rgba`` format.
.. versionadded:: 1.0.0
:attr:`disabled_primary_color`
is an :class:`~kivy.properties.AliasProperty` that returns the value
in ``rgba`` format for :attr:`disabled_primary_color`,
property is readonly.
"""
def _get_op_disabled_primary_color(self) -> list:
return self._get_disabled_primary_color(True)
opposite_disabled_primary_color = AliasProperty(
_get_op_disabled_primary_color, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`disabled_primary_color`.
.. versionadded:: 1.0.0
:attr:`opposite_disabled_primary_color` is an
:class:`~kivy.properties.AliasProperty` that returns the value
in ``rgba`` format for :attr:`opposite_disabled_primary_color`,
property is readonly.
"""
def _get_text_color(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
color = get_color_from_hex("000000")
color[3] = 0.87
elif theme_style == "Dark":
color = get_color_from_hex("FFFFFF")
return color
text_color = AliasProperty(_get_text_color, bind=["theme_style"])
"""
Color of the text used in the :class:`~kivymd.uix.label.MDLabel`.
:attr:`text_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`text_color`,
property is readonly.
"""
def _get_op_text_color(self) -> list:
return self._get_text_color(True)
opposite_text_color = AliasProperty(
_get_op_text_color, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`text_color`.
:attr:`opposite_text_color` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`opposite_text_color`,
property is readonly.
"""
def _get_secondary_text_color(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
color = get_color_from_hex("000000")
color[3] = 0.54
elif theme_style == "Dark":
color = get_color_from_hex("FFFFFF")
color[3] = 0.70
return color
secondary_text_color = AliasProperty(
_get_secondary_text_color, bind=["theme_style"]
)
"""
The color for the secondary text that is used in classes
from the module :class:`~kivymd/uix/list.TwoLineListItem`.
:attr:`secondary_text_color` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`secondary_text_color`,
property is readonly.
"""
def _get_op_secondary_text_color(self) -> list:
return self._get_secondary_text_color(True)
opposite_secondary_text_color = AliasProperty(
_get_op_secondary_text_color, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`secondary_text_color`.
:attr:`opposite_secondary_text_color`
is an :class:`~kivy.properties.AliasProperty` that returns the value
in ``rgba`` format for :attr:`opposite_secondary_text_color`,
property is readonly.
"""
def _get_icon_color(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
color = get_color_from_hex("000000")
color[3] = 0.54
elif theme_style == "Dark":
color = get_color_from_hex("FFFFFF")
return color
icon_color = AliasProperty(_get_icon_color, bind=["theme_style"])
"""
Color of the icon used in the :class:`~kivymd.uix.button.MDIconButton`.
:attr:`icon_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`icon_color`,
property is readonly.
"""
def _get_op_icon_color(self) -> list:
return self._get_icon_color(True)
opposite_icon_color = AliasProperty(
_get_op_icon_color, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`icon_color`.
:attr:`opposite_icon_color` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`opposite_icon_color`,
property is readonly.
"""
def _get_disabled_hint_text_color(self, opposite: bool = False) -> list:
theme_style = self._get_theme_style(opposite)
if theme_style == "Light":
color = get_color_from_hex("000000")
color[3] = 0.38
elif theme_style == "Dark":
color = get_color_from_hex("FFFFFF")
color[3] = 0.50
return color
disabled_hint_text_color = AliasProperty(
_get_disabled_hint_text_color, bind=["theme_style"]
)
"""
Color of the disabled text used in the :class:`~kivymd.uix.textfield.MDTextField`.
:attr:`disabled_hint_text_color`
is an :class:`~kivy.properties.AliasProperty` that returns the value
in ``rgba`` format for :attr:`disabled_hint_text_color`,
property is readonly.
"""
def _get_op_disabled_hint_text_color(self) -> list:
return self._get_disabled_hint_text_color(True)
opposite_disabled_hint_text_color = AliasProperty(
_get_op_disabled_hint_text_color, bind=["theme_style"]
)
"""
The opposite value of color in the :attr:`disabled_hint_text_color`.
:attr:`opposite_disabled_hint_text_color`
is an :class:`~kivy.properties.AliasProperty` that returns the value
in ``rgba`` format for :attr:`opposite_disabled_hint_text_color`,
property is readonly.
"""
# Hardcoded because muh standard
def _get_error_color(self) -> list:
return get_color_from_hex(self.colors["Red"]["A700"])
error_color = AliasProperty(_get_error_color, bind=["theme_style"])
"""
Color of the error text used
in the :class:`~kivymd.uix.textfield.MDTextField`.
:attr:`error_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`error_color`,
property is readonly.
"""
def _get_ripple_color(self) -> list:
return self._ripple_color
def _set_ripple_color(self, value) -> None:
self._ripple_color = value
_ripple_color = ColorProperty(colors["Gray"]["400"])
"""Private value."""
ripple_color = AliasProperty(
_get_ripple_color, _set_ripple_color, bind=["_ripple_color"]
)
"""
Color of ripple effects.
:attr:`ripple_color` is an :class:`~kivy.properties.AliasProperty` that
returns the value in ``rgba`` format for :attr:`ripple_color`,
property is readonly.
"""
def _determine_device_orientation(self, _, window_size) -> None:
if window_size[0] > window_size[1]:
self.device_orientation = "landscape"
elif window_size[1] >= window_size[0]:
self.device_orientation = "portrait"
device_orientation = StringProperty("")
"""
Device orientation.
:attr:`device_orientation` is an :class:`~kivy.properties.StringProperty`.
"""
def _get_standard_increment(self) -> float:
if DEVICE_TYPE == "mobile":
if self.device_orientation == "landscape":
return dp(48)
else:
return dp(56)
else:
return dp(64)
standard_increment = AliasProperty(
_get_standard_increment, bind=["device_orientation"]
)
"""
Value of standard increment.
:attr:`standard_increment` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`standard_increment`,
property is readonly.
"""
def _get_horizontal_margins(self) -> float:
if DEVICE_TYPE == "mobile":
return dp(16)
else:
return dp(24)
horizontal_margins = AliasProperty(_get_horizontal_margins)
"""
Value of horizontal margins.
:attr:`horizontal_margins` is an :class:`~kivy.properties.AliasProperty`
that returns the value in ``rgba`` format for :attr:`horizontal_margins`,
property is readonly.
"""
def on_theme_style(self, interval: int, theme_style: str) -> None:
if (
hasattr(App.get_running_app(), "theme_cls")
and App.get_running_app().theme_cls == self
):
self.set_clearcolor_by_theme_style(theme_style)
_set_clearcolor = False
def set_clearcolor_by_theme_style(self, theme_style):
if self.theme_style_switch_animation and self._set_clearcolor:
Animation(
clearcolor=get_color_from_hex(
self.colors[theme_style]["Background"]
),
d=self.theme_style_switch_animation_duration,
t="linear",
).start(Window)
else:
Window.clearcolor = get_color_from_hex(
self.colors[theme_style]["Background"]
)
self._set_clearcolor = True
# Font name, size (sp), always caps, letter spacing (sp).
font_styles = DictProperty(
{
"H1": ["RobotoLight", 96, False, -1.5],
"H2": ["RobotoLight", 60, False, -0.5],
"H3": ["Roboto", 48, False, 0],
"H4": ["Roboto", 34, False, 0.25],
"H5": ["Roboto", 24, False, 0],
"H6": ["RobotoMedium", 20, False, 0.15],
"Subtitle1": ["Roboto", 16, False, 0.15],
"Subtitle2": ["RobotoMedium", 14, False, 0.1],
"Body1": ["Roboto", 16, False, 0.5],
"Body2": ["Roboto", 14, False, 0.25],
"Button": ["RobotoMedium", 14, True, 1.25],
"Caption": ["Roboto", 12, False, 0.4],
"Overline": ["Roboto", 10, True, 1.5],
"Icon": ["Icons", 24, False, 0],
}
)
"""
Data of default font styles.
Add custom font
---------------
.. tabs::
.. tab:: Declarative style with KV
.. code-block:: python
from kivy.core.text import LabelBase
from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.font_definitions import theme_font_styles
KV = '''
MDScreen:
MDLabel:
text: "JetBrainsMono"
halign: "center"
font_style: "JetBrainsMono"
'''
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
LabelBase.register(
name="JetBrainsMono",
fn_regular="JetBrainsMono-Regular.ttf")
theme_font_styles.append('JetBrainsMono')
self.theme_cls.font_styles["JetBrainsMono"] = [
"JetBrainsMono",
16,
False,
0.15,
]
return Builder.load_string(KV)
MainApp().run()
.. tab:: Declarative python style
.. code-block:: python
from kivy.core.text import LabelBase
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.label import MDLabel
from kivymd.font_definitions import theme_font_styles
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
LabelBase.register(
name="JetBrainsMono",
fn_regular="JetBrainsMono-Regular.ttf")
theme_font_styles.append('JetBrainsMono')
self.theme_cls.font_styles["JetBrainsMono"] = [
"JetBrainsMono",
16,
False,
0.15,
]
return (
MDScreen(
MDLabel(
text="JetBrainsMono",
halign="center",
font_style="JetBrainsMono",
)
)
)
MainApp().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/font-styles.png
:align: center
:attr:`font_styles` is an :class:`~kivy.properties.DictProperty`.
"""
def set_colors(
self,
primary_palette: str,
primary_hue: str,
primary_light_hue: str,
primary_dark_hue: str,
accent_palette: str,
accent_hue: str,
accent_light_hue: str,
accent_dark_hue: str,
) -> None:
"""
Courtesy method to allow all of the theme color attributes to be set in one call.
:attr:`set_colors` allows all of the following to be set in one method call:
* primary palette color,
* primary hue,
* primary light hue,
* primary dark hue,
* accent palette color,
* accent hue,
* accent ligth hue, and
* accent dark hue.
Note that all values *must* be provided. If you only want to set one or two values
use the appropriate method call for that.
.. tabs::
.. tab:: Imperative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.button import MDRectangleFlatButton
class MainApp(MDApp):
def build(self):
self.theme_cls.set_colors(
"Blue", "600", "50", "800", "Teal", "600", "100", "800"
)
screen = MDScreen()
screen.add_widget(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
)
)
return screen
MainApp().run()
.. tab:: Declarative python style
.. code-block:: python
from kivymd.app import MDApp
from kivymd.uix.screen import MDScreen
from kivymd.uix.button import MDRectangleFlatButton
class MainApp(MDApp):
def build(self):
self.theme_cls.set_colors(
"Blue", "600", "50", "800", "Teal", "600", "100", "800"
)
return (
MDScreen(
MDRectangleFlatButton(
text="Hello, World",
pos_hint={"center_x": 0.5, "center_y": 0.5},
)
)
)
MainApp().run()
"""
self.primary_palette = primary_palette
self.primary_hue = primary_hue
self.primary_light_hue = primary_light_hue
self.primary_dark_hue = primary_dark_hue
self.accent_palette = accent_palette
self.accent_hue = accent_hue
self.accent_light_hue = accent_light_hue
self.accent_dark_hue = accent_dark_hue
def __init__(self, **kwargs):
super().__init__(**kwargs)
Clock.schedule_once(lambda x: self.on_theme_style(0, self.theme_style))
self._determine_device_orientation(None, Window.size)
Window.bind(size=self._determine_device_orientation)
self.bind(font_styles=self.sync_theme_styles)
self.colors = colors
Clock.schedule_once(self.sync_theme_styles)
def sync_theme_styles(self, *args) -> None:
# Syncs the values from self.font_styles to theme_font_styles
# this will ensure continuity when someone registers a new font_style.
for num, style in enumerate(theme_font_styles):
if style not in self.font_styles:
theme_font_styles.pop(num)
for style in self.font_styles.keys():
theme_font_styles.append(style)
class ThemableBehavior(EventDispatcher):
theme_cls = ObjectProperty()
"""
Instance of :class:`~ThemeManager` class.
:attr:`theme_cls` is an :class:`~kivy.properties.ObjectProperty`.
"""
device_ios = BooleanProperty(DEVICE_IOS)
"""
``True`` if device is ``iOS``.
:attr:`device_ios` is an :class:`~kivy.properties.BooleanProperty`.
"""
widget_style = OptionProperty(
"android", options=["android", "ios", "desktop"]
)
"""
Allows to set one of the three style properties for the widget:
`'android'`, `'ios'`, `'desktop'`.
For example, for the class :class:`~kivymd.uix.selectioncontrol.MDSwitch`
has two styles - `'android'` and `'ios'`:
.. code-block:: kv
MDSwitch:
widget_style: "ios"
.. code-block:: kv
MDSwitch:
widget_style: "android"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/switch-android-ios.png
:align: center
:attr:`widget_style` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'android'`.
"""
opposite_colors = BooleanProperty(False)
"""
For some widgets, for example, for a widget
:class:`~kivymd.uix.toolbar.MDTopAppBar` changes the color of the label to
the color opposite to the main theme.
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
opposite_colors: True
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-opposite-true.png
:align: center
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
opposite_colors: True
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-opposite-false.png
:align: center
"""
def __init__(self, **kwargs):
self.unbind_properties = [
"theme_style",
"material_style",
"device_orientation",
"primary_color",
"primary_palette",
"accent_palette",
"text_color",
]
if self.theme_cls is not None:
pass
else:
try:
if not isinstance(
App.get_running_app().property("theme_cls", True),
ObjectProperty,
):
raise ValueError(
"KivyMD: App object must be inherited from "
"`kivymd.app.MDApp`"
)
except AttributeError:
raise ValueError(
"KivyMD: App object must be initialized before loading "
"root widget. See "
"https://github.com/kivymd/KivyMD/wiki/Modules-Material-App#exceptions"
)
self.theme_cls = App.get_running_app().theme_cls
super().__init__(**kwargs)
# def dec_disabled(self, *args, **kwargs) -> None:
# callabacks = self.theme_cls.get_property_observers("theme_style")
# for callaback in callabacks:
# try:
# if hasattr(callaback, "proxy") and hasattr(
# callaback.proxy, "theme_cls"
# ):
# for property_name in self.unbind_properties:
# self.theme_cls.unbind(
# **{
# property_name: getattr(
# callaback.proxy, callaback.method_name
# )
# }
# )
# except ReferenceError:
# pass
# super().dec_disabled(*args, **kwargs)
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