"""
Components/Card
===============
.. seealso::
`Material Design spec, Cards <https://material.io/components/cards>`_ and
`Material Design 3 spec, Cards <https://m3.material.io/components/cards/specs>`_
.. rubric:: Cards contain content and actions about a single subject.
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/cards.png
:align: center
`KivyMD` provides the following card classes for use:
- MDCard_
- MDCardSwipe_
.. note:: :class:`~MDCard` inherited from
:class:`~kivy.uix.boxlayout.BoxLayout`. You can use all parameters and
attributes of the :class:`~kivy.uix.boxlayout.BoxLayout` class in the
:class:`~MDCard` class.
.. MDCard:
MDCard
------
.. warning:: Starting from the KivyMD 1.0.0 library version, it is necessary
to manually inherit the card class from one of the ``Elevation`` classes
from ``kivymd/uix/behaviors/elevation.py`` module to draw the card shadow.
.. code-block:: python
from kivymd.uix.behaviors import RoundedRectangularElevationBehavior
from kivymd.uix.card import MDCard
class MD3Card(MDCard, RoundedRectangularElevationBehavior):
'''Implements a material design v3 card.'''
This may sound awkward to you, but it actually allows for better control over
the providers that implement the rendering of the shadows.
.. note:: You can read more information about the classes that implement the
rendering of shadows on this `documentation page <https://kivymd.readthedocs.io/en/latest/behaviors/elevation/>`_.
An example of the implementation of a card in the style of material design version 3
------------------------------------------------------------------------------------
.. code-block:: python
from kivy.lang import Builder
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivymd.uix.behaviors import RoundedRectangularElevationBehavior
from kivymd.uix.card import MDCard
KV = '''
<MD3Card>
padding: 16
size_hint: None, None
size: "200dp", "100dp"
MDRelativeLayout:
size_hint: None, None
size: root.size
MDIconButton:
icon: "dots-vertical"
pos:
root.width - (self.width + root.padding[0] + dp(4)), \
root.height - (self.height + root.padding[0] + dp(4))
MDLabel:
id: label
text: root.text
adaptive_size: True
color: .2, .2, .2, .8
MDScreen:
MDBoxLayout:
id: box
adaptive_size: True
spacing: "56dp"
pos_hint: {"center_x": .5, "center_y": .5}
'''
class MD3Card(MDCard, RoundedRectangularElevationBehavior):
'''Implements a material design v3 card.'''
text = StringProperty()
class TestCard(MDApp):
def build(self):
self.theme_cls.material_style = "M3"
return Builder.load_string(KV)
def on_start(self):
styles = {
"elevated": "#f6eeee", "filled": "#f4dedc", "outlined": "#f8f5f4"
}
for style in styles.keys():
self.root.ids.box.add_widget(
MD3Card(
line_color=(0.2, 0.2, 0.2, 0.8),
style=style,
text=style.capitalize(),
md_bg_color=styles[style],
)
)
TestCard().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/cards-m3.png
:align: center
.. MDCardSwipe:
MDCardSwipe
-----------
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/MDCardSwipe.gif
:align: center
To create a card with `swipe-to-delete` behavior, you must create a new class
that inherits from the :class:`~MDCardSwipe` class:
.. code-block:: kv
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
MDCardSwipeLayerBox:
MDCardSwipeFrontBox:
OneLineListItem:
id: content
text: root.text
_no_ripple_effect: True
.. code-block:: python
class SwipeToDeleteItem(MDCardSwipe):
text = StringProperty()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/map-mdcard-swipr.png
:align: center
End full code
-------------
.. code-block:: python
from kivy.lang import Builder
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivymd.uix.card import MDCardSwipe
KV = '''
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
MDCardSwipeLayerBox:
# Content under the card.
MDCardSwipeFrontBox:
# Content of card.
OneLineListItem:
id: content
text: root.text
_no_ripple_effect: True
MDScreen:
MDBoxLayout:
orientation: "vertical"
spacing: "10dp"
MDTopAppBar:
elevation: 10
title: "MDCardSwipe"
ScrollView:
scroll_timeout : 100
MDList:
id: md_list
padding: 0
'''
class SwipeToDeleteItem(MDCardSwipe):
'''Card with `swipe-to-delete` behavior.'''
text = StringProperty()
class TestCard(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.screen = Builder.load_string(KV)
def build(self):
return self.screen
def on_start(self):
'''Creates a list of cards.'''
for i in range(20):
self.screen.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"One-line item {i}")
)
TestCard().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/list-mdcard-swipe.gif
:align: center
Binding a swipe to one of the sides of the screen
-------------------------------------------------
.. code-block:: kv
<SwipeToDeleteItem>:
# By default, the parameter is "left"
anchor: "right"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/mdcard-swipe-anchor-right.gif
:align: center
.. Note:: You cannot use the left and right swipe at the same time.
Swipe behavior
--------------
.. code-block:: kv
<SwipeToDeleteItem>:
# By default, the parameter is "hand"
type_swipe: "hand"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/hand-mdcard-swipe.gif
:align: center
.. code-block:: kv
<SwipeToDeleteItem>:
type_swipe: "auto"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/auto-mdcard-swipe.gif
:align: center
Removing an item using the ``type_swipe = "auto"`` parameter
------------------------------------------------------------
The map provides the :attr:`MDCardSwipe.on_swipe_complete` event.
You can use this event to remove items from a list:
.. code-block:: kv
<SwipeToDeleteItem>:
on_swipe_complete: app.on_swipe_complete(root)
.. code-block:: python
def on_swipe_complete(self, instance):
self.screen.ids.md_list.remove_widget(instance)
End full code
-------------
.. code-block:: python
from kivy.lang import Builder
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivymd.uix.card import MDCardSwipe
KV = '''
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
type_swipe: "auto"
on_swipe_complete: app.on_swipe_complete(root)
MDCardSwipeLayerBox:
MDCardSwipeFrontBox:
OneLineListItem:
id: content
text: root.text
_no_ripple_effect: True
MDScreen:
MDBoxLayout:
orientation: "vertical"
spacing: "10dp"
MDTopAppBar:
elevation: 10
title: "MDCardSwipe"
ScrollView:
MDList:
id: md_list
padding: 0
'''
class SwipeToDeleteItem(MDCardSwipe):
text = StringProperty()
class TestCard(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.screen = Builder.load_string(KV)
def build(self):
return self.screen
def on_swipe_complete(self, instance):
self.screen.ids.md_list.remove_widget(instance)
def on_start(self):
for i in range(20):
self.screen.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"One-line item {i}")
)
TestCard().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/autodelete-mdcard-swipe.gif
:align: center
Add content to the bottom layer of the card
-------------------------------------------
To add content to the bottom layer of the card,
use the :class:`~MDCardSwipeLayerBox` class.
.. code-block:: kv
<SwipeToDeleteItem>:
MDCardSwipeLayerBox:
padding: "8dp"
MDIconButton:
icon: "trash-can"
pos_hint: {"center_y": .5}
on_release: app.remove_item(root)
End full code
-------------
.. code-block:: python
from kivy.lang import Builder
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivymd.uix.card import MDCardSwipe
KV = '''
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
MDCardSwipeLayerBox:
padding: "8dp"
MDIconButton:
icon: "trash-can"
pos_hint: {"center_y": .5}
on_release: app.remove_item(root)
MDCardSwipeFrontBox:
OneLineListItem:
id: content
text: root.text
_no_ripple_effect: True
MDScreen:
MDBoxLayout:
orientation: "vertical"
spacing: "10dp"
MDTopAppBar:
elevation: 10
title: "MDCardSwipe"
ScrollView:
MDList:
id: md_list
padding: 0
'''
class SwipeToDeleteItem(MDCardSwipe):
text = StringProperty()
class TestCard(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.screen = Builder.load_string(KV)
def build(self):
return self.screen
def remove_item(self, instance):
self.screen.ids.md_list.remove_widget(instance)
def on_start(self):
for i in range(20):
self.screen.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"One-line item {i}")
)
TestCard().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/handdelete-mdcard-swipe.gif
:align: center
Focus behavior
--------------
.. code-block:: kv
MDCard:
focus_behavior: True
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/card-focus.gif
:align: center
Ripple behavior
---------------
.. code-block:: kv
MDCard:
ripple_behavior: True
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/card-behavior.gif
:align: center
End full code
-------------
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
<StarButton@MDIconButton>
icon: "star"
on_release: self.icon = "star-outline" if self.icon == "star" else "star"
MDScreen:
MDCard:
orientation: "vertical"
size_hint: .5, None
height: box_top.height + box_bottom.height
focus_behavior: True
ripple_behavior: True
pos_hint: {"center_x": .5, "center_y": .5}
MDBoxLayout:
id: box_top
spacing: "20dp"
adaptive_height: True
FitImage:
source: "/Users/macbookair/album.jpeg"
size_hint: .3, None
height: text_box.height
MDBoxLayout:
id: text_box
orientation: "vertical"
adaptive_height: True
spacing: "10dp"
padding: 0, "10dp", "10dp", "10dp"
MDLabel:
text: "Ride the Lightning"
theme_text_color: "Primary"
font_style: "H5"
bold: True
adaptive_height: True
MDLabel:
text: "July 27, 1984"
adaptive_height: True
theme_text_color: "Primary"
MDSeparator:
MDBoxLayout:
id: box_bottom
adaptive_height: True
padding: "10dp", 0, 0, 0
MDLabel:
text: "Rate this album"
adaptive_height: True
pos_hint: {"center_y": .5}
theme_text_color: "Primary"
StarButton:
StarButton:
StarButton:
StarButton:
StarButton:
'''
class Test(MDApp):
def build(self):
self.theme_cls.theme_style = "Dark"
return Builder.load_string(KV)
Test().run()
"""
__all__ = (
"MDCard",
"MDCardSwipe",
"MDCardSwipeFrontBox",
"MDCardSwipeLayerBox",
"MDSeparator",
)
import os
from typing import Union
from kivy.animation import Animation
from kivy.clock import Clock
from kivy.lang import Builder
from kivy.metrics import dp
from kivy.properties import (
BooleanProperty,
ColorProperty,
NumericProperty,
OptionProperty,
StringProperty,
VariableListProperty,
)
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.relativelayout import RelativeLayout
from kivymd import uix_path
from kivymd.color_definitions import colors
from kivymd.theming import ThemableBehavior
from kivymd.uix.behaviors import (
BackgroundColorBehavior,
FocusBehavior,
RectangularRippleBehavior,
)
from kivymd.uix.boxlayout import MDBoxLayout
with open(
os.path.join(uix_path, "card", "card.kv"), encoding="utf-8"
) as kv_file:
Builder.load_string(kv_file.read())
class MDSeparator(ThemableBehavior, MDBoxLayout):
"""A separator line."""
color = ColorProperty(None)
"""
Separator color in ``rgba`` format.
:attr:`color` is a :class:`~kivy.properties.ColorProperty`
and defaults to `None`.
"""
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.on_orientation()
def on_orientation(self, *args) -> None:
self.size_hint = (
(1, None) if self.orientation == "horizontal" else (None, 1)
)
if self.orientation == "horizontal":
self.height = dp(1)
else:
self.width = dp(1)
class MDCard(
ThemableBehavior,
BackgroundColorBehavior,
RectangularRippleBehavior,
FocusBehavior,
BoxLayout,
):
focus_behavior = BooleanProperty(False)
"""
Using focus when hovering over a card.
:attr:`focus_behavior` is a :class:`~kivy.properties.BooleanProperty`
and defaults to `False`.
"""
ripple_behavior = BooleanProperty(False)
"""
Use ripple effect for card.
:attr:`ripple_behavior` is a :class:`~kivy.properties.BooleanProperty`
and defaults to `False`.
"""
elevation = NumericProperty(None, allownone=True)
"""
Elevation value.
:attr:`elevation` is an :class:`~kivy.properties.NumericProperty`
and defaults to 1.
"""
radius = VariableListProperty([dp(6), dp(6), dp(6), dp(6)])
"""
Card radius by default.
.. versionadded:: 1.0.0
:attr:`radius` is an :class:`~kivy.properties.VariableListProperty`
and defaults to `[dp(6), dp(6), dp(6), dp(6)]`.
"""
style = OptionProperty(None, options=("filled", "elevated", "outlined"))
"""
Card type.
.. versionadded:: 1.0.0
Available options are: 'filled', 'elevated', 'outlined'.
:attr:`style` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'elevated'`.
"""
_bg_color_map = (
colors["Light"]["CardsDialogs"],
colors["Dark"]["CardsDialogs"],
[1.0, 1.0, 1.0, 0.0],
)
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.theme_cls.bind(theme_style=self.update_md_bg_color)
self.theme_cls.bind(material_style=self.set_style)
Clock.schedule_once(self.set_style)
Clock.schedule_once(
lambda x: self.on_ripple_behavior(0, self.ripple_behavior)
)
self.update_md_bg_color(self, self.theme_cls.theme_style)
def update_md_bg_color(self, instance_card, theme_style: str) -> None:
if self.md_bg_color in self._bg_color_map:
self.md_bg_color = colors[theme_style]["CardsDialogs"]
def set_style(self, *args) -> None:
self.set_radius()
self.set_elevation()
self.set_line_color()
def set_line_color(self):
if self.theme_cls.material_style == "M3":
if self.style == "elevated" or self.style == "filled":
self.line_color = [0, 0, 0, 0]
def set_elevation(self):
if self.theme_cls.material_style == "M3":
if self.style == "outlined" or self.style == "filled":
self.elevation = 0
elif self.style == "elevated":
self.elevation = 1
def set_radius(self) -> None:
if (
self.radius == [dp(6), dp(6), dp(6), dp(6)]
and self.theme_cls.material_style == "M3"
):
self.radius = [dp(16), dp(16), dp(16), dp(16)]
elif (
self.radius == [dp(16), dp(16), dp(16), dp(16)]
and self.theme_cls.material_style == "M2"
):
self.radius = [dp(6), dp(6), dp(6), dp(6)]
def on_ripple_behavior(
self, interval: Union[int, float], value_behavior: bool
) -> None:
self._no_ripple_effect = False if value_behavior else True
class MDCardSwipe(RelativeLayout):
"""
:Events:
:attr:`on_swipe_complete`
Called when a swipe of card is completed.
"""
open_progress = NumericProperty(0.0)
"""
Percent of visible part of side panel. The percent is specified as a
floating point number in the range 0-1. 0.0 if panel is closed and 1.0 if
panel is opened.
:attr:`open_progress` is a :class:`~kivy.properties.NumericProperty`
and defaults to `0.0`.
"""
opening_transition = StringProperty("out_cubic")
"""
The name of the animation transition type to use when animating to
the :attr:`state` `'opened'`.
:attr:`opening_transition` is a :class:`~kivy.properties.StringProperty`
and defaults to `'out_cubic'`.
"""
closing_transition = StringProperty("out_sine")
"""
The name of the animation transition type to use when animating to
the :attr:`state` 'closed'.
:attr:`closing_transition` is a :class:`~kivy.properties.StringProperty`
and defaults to `'out_sine'`.
"""
anchor = OptionProperty("left", options=("left", "right"))
"""
Anchoring screen edge for card. Available options are: `'left'`, `'right'`.
:attr:`anchor` is a :class:`~kivy.properties.OptionProperty`
and defaults to `left`.
"""
swipe_distance = NumericProperty(50)
"""
The distance of the swipe with which the movement of navigation drawer
begins.
:attr:`swipe_distance` is a :class:`~kivy.properties.NumericProperty`
and defaults to `50`.
"""
opening_time = NumericProperty(0.2)
"""
The time taken for the card to slide to the :attr:`state` `'open'`.
:attr:`opening_time` is a :class:`~kivy.properties.NumericProperty`
and defaults to `0.2`.
"""
state = OptionProperty("closed", options=("closed", "opened"))
"""
Detailed state. Sets before :attr:`state`. Bind to :attr:`state` instead
of :attr:`status`. Available options are: `'closed'`, `'opened'`.
:attr:`status` is a :class:`~kivy.properties.OptionProperty`
and defaults to `'closed'`.
"""
max_swipe_x = NumericProperty(0.3)
"""
If, after the events of :attr:`~on_touch_up` card position exceeds this
value - will automatically execute the method :attr:`~open_card`,
and if not - will automatically be :attr:`~close_card` method.
:attr:`max_swipe_x` is a :class:`~kivy.properties.NumericProperty`
and defaults to `0.3`.
"""
max_opened_x = NumericProperty("100dp")
"""
The value of the position the card shifts to when :attr:`~type_swipe`
s set to `'hand'`.
:attr:`max_opened_x` is a :class:`~kivy.properties.NumericProperty`
and defaults to `100dp`.
"""
type_swipe = OptionProperty("hand", options=("auto", "hand"))
"""
Type of card opening when swipe. Shift the card to the edge or to
a set position :attr:`~max_opened_x`. Available options are:
`'auto'`, `'hand'`.
:attr:`type_swipe` is a :class:`~kivy.properties.OptionProperty`
and defaults to `auto`.
"""
_opens_process = False
_to_closed = True
def __init__(self, **kw):
self.register_event_type("on_swipe_complete")
super().__init__(**kw)
def add_widget(self, widget, index=0, canvas=None):
if isinstance(widget, (MDCardSwipeFrontBox, MDCardSwipeLayerBox)):
return super().add_widget(widget)
def on_swipe_complete(self, *args):
"""Called when a swipe of card is completed."""
def on_anchor(
self, instance_swipe_to_delete_item, anchor_value: str
) -> None:
if anchor_value == "right":
self.open_progress = 1.0
else:
self.open_progress = 0.0
def on_open_progress(
self, instance_swipe_to_delete_item, progress_value: float
) -> None:
if self.anchor == "left":
self.children[0].x = self.width * progress_value
else:
self.children[0].x = self.width * progress_value - self.width
def on_touch_move(self, touch):
if self.collide_point(touch.x, touch.y):
expr = (
touch.x < self.swipe_distance
if self.anchor == "left"
else touch.x > self.width - self.swipe_distance
)
if expr and not self._opens_process:
self._opens_process = True
self._to_closed = False
if self._opens_process:
self.open_progress = max(
min(self.open_progress + touch.dx / self.width, 2.5), 0
)
return super().on_touch_move(touch)
def on_touch_up(self, touch):
if self.collide_point(touch.x, touch.y):
if not self._to_closed:
self._opens_process = False
self.complete_swipe()
return super().on_touch_up(touch)
def on_touch_down(self, touch):
if self.collide_point(touch.x, touch.y):
if self.state == "opened":
self._to_closed = True
self.close_card()
return super().on_touch_down(touch)
def complete_swipe(self) -> None:
expr = (
self.open_progress <= self.max_swipe_x
if self.anchor == "left"
else self.open_progress >= self.max_swipe_x
)
if expr:
self.close_card()
else:
self.open_card()
def open_card(self) -> None:
if self.type_swipe == "hand":
swipe_x = (
self.max_opened_x
if self.anchor == "left"
else -self.max_opened_x
)
else:
swipe_x = self.width if self.anchor == "left" else 0
anim = Animation(
x=swipe_x, t=self.opening_transition, d=self.opening_time
)
anim.bind(on_complete=self._on_swipe_complete)
anim.start(self.children[0])
self.state = "opened"
def close_card(self) -> None:
anim = Animation(x=0, t=self.closing_transition, d=self.opening_time)
anim.bind(on_complete=self._reset_open_progress)
anim.start(self.children[0])
self.state = "closed"
def _on_swipe_complete(self, *args):
self.dispatch("on_swipe_complete")
def _reset_open_progress(self, *args):
self.open_progress = 0.0 if self.anchor == "left" else 1.0
self._to_closed = False
self.dispatch("on_swipe_complete")
class MDCardSwipeFrontBox(MDCard):
pass
class MDCardSwipeLayerBox(MDBoxLayout):
pass