mirror of
https://github.com/markqvist/Sideband.git
synced 2024-12-30 09:56:11 -05:00
433 lines
12 KiB
Python
433 lines
12 KiB
Python
"""
|
|
Components/Banner
|
|
=================
|
|
|
|
.. seealso::
|
|
|
|
`Material Design spec, Banner <https://material.io/components/banners>`_
|
|
|
|
.. rubric:: A banner displays a prominent message and related optional actions.
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner.png
|
|
:align: center
|
|
|
|
Usage
|
|
=====
|
|
|
|
.. code-block:: python
|
|
|
|
from kivy.lang import Builder
|
|
from kivy.factory import Factory
|
|
|
|
from kivymd.app import MDApp
|
|
|
|
Builder.load_string('''
|
|
<ExampleBanner@Screen>
|
|
|
|
MDBanner:
|
|
id: banner
|
|
text: ["One line string text example without actions."]
|
|
# The widget that is under the banner.
|
|
# It will be shifted down to the height of the banner.
|
|
over_widget: screen
|
|
vertical_pad: toolbar.height
|
|
|
|
MDTopAppBar:
|
|
id: toolbar
|
|
title: "Example Banners"
|
|
elevation: 4
|
|
pos_hint: {'top': 1}
|
|
|
|
MDBoxLayout:
|
|
id: screen
|
|
orientation: "vertical"
|
|
size_hint_y: None
|
|
height: Window.height - toolbar.height
|
|
|
|
OneLineListItem:
|
|
text: "Banner without actions"
|
|
on_release: banner.show()
|
|
|
|
Widget:
|
|
''')
|
|
|
|
|
|
class Test(MDApp):
|
|
def build(self):
|
|
return Factory.ExampleBanner()
|
|
|
|
|
|
Test().run()
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner-example-1.gif
|
|
:align: center
|
|
|
|
.. rubric:: Banner type.
|
|
|
|
By default, the banner is of the type ``'one-line'``:
|
|
|
|
.. code-block:: kv
|
|
|
|
MDBanner:
|
|
text: ["One line string text example without actions."]
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner-one-line.png
|
|
:align: center
|
|
|
|
To use a two-line banner, specify the ``'two-line'`` :attr:`MDBanner.type` for the banner
|
|
and pass the list of two lines to the :attr:`MDBanner.text` parameter:
|
|
|
|
.. code-block:: kv
|
|
|
|
MDBanner:
|
|
type: "two-line"
|
|
text:
|
|
["One line string text example without actions.", "This is the second line of the banner message."]
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner-two-line.png
|
|
:align: center
|
|
|
|
Similarly, create a three-line banner:
|
|
|
|
.. code-block:: kv
|
|
|
|
MDBanner:
|
|
type: "three-line"
|
|
text:
|
|
["One line string text example without actions.", "This is the second line of the banner message.", "and this is the third line of the banner message."]
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner-three-line.png
|
|
:align: center
|
|
|
|
To add buttons to any type of banner,
|
|
use the :attr:`MDBanner.left_action` and :attr:`MDBanner.right_action` parameters,
|
|
which should take a list ['Button name', function]:
|
|
|
|
.. code-block:: kv
|
|
|
|
MDBanner:
|
|
text: ["One line string text example without actions."]
|
|
left_action: ["CANCEL", lambda x: None]
|
|
|
|
Or two buttons:
|
|
|
|
.. code-block:: kv
|
|
|
|
MDBanner:
|
|
text: ["One line string text example without actions."]
|
|
left_action: ["CANCEL", lambda x: None]
|
|
right_action: ["CLOSE", lambda x: None]
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner-actions.png
|
|
:align: center
|
|
|
|
If you want to use the icon on the left in the banner,
|
|
add the prefix `'-icon'` to the banner type:
|
|
|
|
.. code-block:: kv
|
|
|
|
MDBanner:
|
|
type: "one-line-icon"
|
|
icon: f"{images_path}/kivymd.png"
|
|
text: ["One line string text example without actions."]
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/banner-icon.png
|
|
:align: center
|
|
|
|
.. Note:: `See full example <https://github.com/kivymd/KivyMD/wiki/Components-Banner>`_
|
|
"""
|
|
|
|
__all__ = ("MDBanner",)
|
|
|
|
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 (
|
|
BoundedNumericProperty,
|
|
ListProperty,
|
|
NumericProperty,
|
|
ObjectProperty,
|
|
OptionProperty,
|
|
StringProperty,
|
|
)
|
|
from kivy.uix.widget import Widget
|
|
|
|
from kivymd import uix_path
|
|
from kivymd.uix.boxlayout import MDBoxLayout
|
|
from kivymd.uix.button import MDFlatButton
|
|
from kivymd.uix.card import MDCard
|
|
from kivymd.uix.list import (
|
|
OneLineAvatarListItem,
|
|
OneLineListItem,
|
|
ThreeLineAvatarListItem,
|
|
ThreeLineListItem,
|
|
TwoLineAvatarListItem,
|
|
TwoLineListItem,
|
|
)
|
|
|
|
with open(
|
|
os.path.join(uix_path, "banner", "banner.kv"),
|
|
encoding="utf-8",
|
|
) as kv_file:
|
|
Builder.load_string(kv_file.read())
|
|
|
|
|
|
class MDBanner(MDCard):
|
|
vertical_pad = NumericProperty(dp(68))
|
|
"""
|
|
Indent the banner at the top of the screen.
|
|
|
|
:attr:`vertical_pad` is an :class:`~kivy.properties.NumericProperty`
|
|
and defaults to `dp(68)`.
|
|
"""
|
|
|
|
opening_transition = StringProperty("in_quad")
|
|
"""
|
|
The name of the animation transition.
|
|
|
|
:attr:`opening_transition` is an :class:`~kivy.properties.StringProperty`
|
|
and defaults to `'in_quad'`.
|
|
"""
|
|
|
|
icon = StringProperty("data/logo/kivy-icon-128.png")
|
|
"""
|
|
Icon banner.
|
|
|
|
:attr:`icon` is an :class:`~kivy.properties.StringProperty`
|
|
and defaults to `'data/logo/kivy-icon-128.png'`.
|
|
"""
|
|
|
|
over_widget = ObjectProperty()
|
|
"""
|
|
The widget that is under the banner.
|
|
It will be shifted down to the height of the banner.
|
|
|
|
:attr:`over_widget` is an :class:`~kivy.properties.ObjectProperty`
|
|
and defaults to `None`.
|
|
"""
|
|
|
|
text = ListProperty()
|
|
"""
|
|
List of lines for banner text.
|
|
Must contain no more than three lines for a
|
|
`'one-line'`, `'two-line'` and `'three-line'` banner, respectively.
|
|
|
|
:attr:`text` is an :class:`~kivy.properties.ListProperty`
|
|
and defaults to `[]`.
|
|
"""
|
|
|
|
left_action = ListProperty()
|
|
"""
|
|
The action of banner.
|
|
|
|
To add one action, make a list [`'name_action'`, callback]
|
|
where `'name_action'` is a string that corresponds to an action name and
|
|
``callback`` is the function called on a touch release event.
|
|
|
|
:attr:`left_action` is an :class:`~kivy.properties.ListProperty`
|
|
and defaults to `[]`.
|
|
"""
|
|
|
|
right_action = ListProperty()
|
|
"""
|
|
Works the same way as :attr:`left_action`.
|
|
|
|
:attr:`right_action` is an :class:`~kivy.properties.ListProperty`
|
|
and defaults to `[]`.
|
|
"""
|
|
|
|
type = OptionProperty(
|
|
"one-line",
|
|
options=[
|
|
"one-line",
|
|
"two-line",
|
|
"three-line",
|
|
"one-line-icon",
|
|
"two-line-icon",
|
|
"three-line-icon",
|
|
],
|
|
allownone=True,
|
|
)
|
|
"""
|
|
Banner type. . Available options are: (`"one-line"`, `"two-line"`,
|
|
`"three-line"`, `"one-line-icon"`, `"two-line-icon"`, `"three-line-icon"`).
|
|
|
|
:attr:`type` is an :class:`~kivy.properties.OptionProperty`
|
|
and defaults to `'one-line'`.
|
|
"""
|
|
|
|
opening_timeout = BoundedNumericProperty(0.7, min=0.7)
|
|
"""
|
|
Time interval after which the banner will be shown.
|
|
|
|
.. versionadded:: 1.0.0
|
|
|
|
:attr:`opening_timeout` is an :class:`~kivy.properties.BoundedNumericProperty`
|
|
and defaults to `0.7`.
|
|
"""
|
|
|
|
opening_time = NumericProperty(0.15)
|
|
"""
|
|
The time taken for the banner to slide to the :attr:`state` `'open'`.
|
|
|
|
.. versionadded:: 1.0.0
|
|
|
|
:attr:`opening_time` is a :class:`~kivy.properties.NumericProperty`
|
|
and defaults to `0.15`.
|
|
"""
|
|
|
|
closing_time = NumericProperty(0.15)
|
|
"""
|
|
The time taken for the banner to slide to the :attr:`state` `'close'`.
|
|
|
|
.. versionadded:: 1.0.0
|
|
|
|
:attr:`closing_time` is a :class:`~kivy.properties.NumericProperty`
|
|
and defaults to `0.15`.
|
|
"""
|
|
|
|
_type_message = None
|
|
_progress = False
|
|
|
|
def add_actions_buttons(
|
|
self, instance_box: MDBoxLayout, data: list
|
|
) -> None:
|
|
"""
|
|
Adds buttons to the banner.
|
|
|
|
:param data: ['NAME BUTTON', <function>];
|
|
"""
|
|
|
|
if data:
|
|
name_action_button, function_action_button = data
|
|
action_button = MDFlatButton(
|
|
text=f"[b]{name_action_button}[/b]",
|
|
theme_text_color="Custom",
|
|
text_color=self.theme_cls.primary_color,
|
|
on_release=function_action_button,
|
|
)
|
|
action_button.markup = True
|
|
instance_box.add_widget(action_button)
|
|
|
|
def show(self) -> None:
|
|
"""Displays a banner on the screen."""
|
|
|
|
def show(interval: Union[int, float]):
|
|
self.set_type_banner()
|
|
self.add_actions_buttons(self.ids.left_action_box, self.left_action)
|
|
self.add_actions_buttons(
|
|
self.ids.right_action_box, self.right_action
|
|
)
|
|
self._add_banner_to_container()
|
|
Clock.schedule_once(self.animation_display_banner, 0.1)
|
|
|
|
if not self._progress:
|
|
self._progress = True
|
|
if self.ids.container_message.children:
|
|
self.hide()
|
|
Clock.schedule_once(show, self.opening_timeout)
|
|
|
|
def hide(self) -> None:
|
|
"""Hides the banner from the screen."""
|
|
|
|
def hide(interval: Union[int, float]):
|
|
anim = Animation(banner_y=0, d=self.closing_time)
|
|
anim.bind(on_complete=self._remove_banner)
|
|
anim.start(self)
|
|
Animation(
|
|
y=self.over_widget.y + self.height, d=self.closing_time
|
|
).start(self.over_widget)
|
|
|
|
if not self._progress:
|
|
self._progress = True
|
|
Clock.schedule_once(hide, 0.5)
|
|
|
|
def set_type_banner(self) -> None:
|
|
self._type_message = {
|
|
"three-line-icon": ThreeLineIconBanner,
|
|
"two-line-icon": TwoLineIconBanner,
|
|
"one-line-icon": OneLineIconBanner,
|
|
"three-line": ThreeLineBanner,
|
|
"two-line": TwoLineBanner,
|
|
"one-line": OneLineBanner,
|
|
}[self.type]
|
|
|
|
def animation_display_banner(self, interval: Union[int, float]) -> None:
|
|
Animation(
|
|
banner_y=self.height + self.vertical_pad,
|
|
d=self.opening_time,
|
|
t=self.opening_transition,
|
|
).start(self)
|
|
anim = Animation(
|
|
y=self.over_widget.y - self.height,
|
|
d=self.opening_time,
|
|
t=self.opening_transition,
|
|
)
|
|
anim.bind(on_complete=self._reset_progress)
|
|
anim.start(self.over_widget)
|
|
|
|
def _remove_banner(self, *args):
|
|
self.ids.container_message.clear_widgets()
|
|
self.ids.left_action_box.clear_widgets()
|
|
self.ids.right_action_box.clear_widgets()
|
|
self._reset_progress()
|
|
|
|
def _reset_progress(self, *args):
|
|
self._progress = False
|
|
|
|
def _add_banner_to_container(self) -> None:
|
|
self.ids.container_message.add_widget(
|
|
self._type_message(text_message=self.text, icon=self.icon)
|
|
)
|
|
|
|
|
|
class BaseBanner(Widget):
|
|
"""Implements the base banner class."""
|
|
|
|
text_message = ListProperty(["", "", ""])
|
|
"""
|
|
List of banner strings. First, second and, respectively, third lines.
|
|
|
|
:attr:`text_message` is an :class:`~kivy.properties.ListProperty`
|
|
and defaults to `['', '', '']`.
|
|
"""
|
|
|
|
icon = StringProperty()
|
|
"""
|
|
Icon banner.
|
|
|
|
:attr:`icon` is an :class:`~kivy.properties.StringProperty`
|
|
and defaults to `''`.
|
|
"""
|
|
|
|
def on_touch_down(self, touch):
|
|
self.parent.parent.hide()
|
|
|
|
|
|
class ThreeLineIconBanner(ThreeLineAvatarListItem, BaseBanner):
|
|
pass
|
|
|
|
|
|
class TwoLineIconBanner(TwoLineAvatarListItem, BaseBanner):
|
|
pass
|
|
|
|
|
|
class OneLineIconBanner(OneLineAvatarListItem, BaseBanner):
|
|
pass
|
|
|
|
|
|
class ThreeLineBanner(ThreeLineListItem, BaseBanner):
|
|
pass
|
|
|
|
|
|
class TwoLineBanner(TwoLineListItem, BaseBanner):
|
|
pass
|
|
|
|
|
|
class OneLineBanner(OneLineListItem, BaseBanner):
|
|
pass
|