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Sideband/sbapp/kivymd/uix/toolbar/toolbar.py
Mark Qvist abcf173cc8 Updated kivymd
2022-10-02 17:16:59 +02:00

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"""
Components/Toolbar
==================
.. seealso::
`Material Design spec, App bars: top <https://material.io/components/app-bars-top>`_
`Material Design spec, App bars: bottom <https://material.io/components/app-bars-bottom/app-bars-bottom.html>`_
`Material Design 3 spec, App bars: bottom <https://m3.material.io/components/top-app-bar/overview>`_
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/app-bar-top.png
:align: center
`KivyMD` provides the following toolbar positions for use:
- Top_
- Bottom_
.. Top:
Top
---
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
MDBoxLayout:
orientation: "vertical"
MDTopAppBar:
title: "MDTopAppBar"
MDLabel:
text: "Content"
halign: "center"
'''
class Test(MDApp):
def build(self):
return Builder.load_string(KV)
Test().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-1.png
:align: center
Add left menu
-------------
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
left_action_items: [["menu", lambda x: app.callback()]]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-2.png
:align: center
.. note::
The callback is optional. ``left_action_items: [["menu"]]`` would also work for a button that does nothing.
Add right menu
--------------
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
right_action_items: [["dots-vertical", lambda x: app.callback()]]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-3.png
:align: center
Add two item to the right menu
------------------------------
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
right_action_items: [["dots-vertical", lambda x: app.callback_1()], ["clock", lambda x: app.callback_2()]]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-4.png
:align: center
Change toolbar color
--------------------
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
md_bg_color: app.theme_cls.accent_color
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-5.png
:align: center
Change toolbar text color
-------------------------
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
specific_text_color: app.theme_cls.accent_color
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-6.png
:align: center
Shadow elevation control
------------------------
.. code-block:: kv
MDTopAppBar:
title: "Elevation 4"
elevation: 4
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-7.png
:align: center
.. Bottom:
Bottom
------
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/app-bar-bottom.png
:align: center
Usage
-----
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
KV = '''
MDBoxLayout:
# Will always be at the bottom of the screen.
MDBottomAppBar:
MDTopAppBar:
title: "Title"
icon: "git"
type: "bottom"
left_action_items: [["menu", lambda x: x]]
'''
class Test(MDApp):
def build(self):
return Builder.load_string(KV)
Test().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-8.png
:align: center
Event on floating button
------------------------
Event ``on_action_button``:
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
title: "Title"
icon: "git"
type: "bottom"
left_action_items: [["menu", lambda x: x]]
on_action_button: app.callback(self.icon)
Floating button position
------------------------
Mode:
- `'free-end'`
- `'free-center'`
- `'end'`
- `'center'`
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
title: "Title"
icon: "git"
type: "bottom"
left_action_items: [["menu", lambda x: x]]
mode: "end"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-9.png
:align: center
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
title: "Title"
icon: "git"
type: "bottom"
left_action_items: [["menu", lambda x: x]]
mode: "free-end"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-10.png
:align: center
Custom color
------------
.. code-block:: kv
MDBottomAppBar:
md_bg_color: 0, 1, 0, 1
MDTopAppBar:
title: "Title"
icon: "git"
type: "bottom"
left_action_items: [["menu", lambda x: x]]
icon_color: 0, 1, 0, 1
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-11.png
:align: center
Tooltips
--------
You can add MDTooltips to the Toolbar icons by ading a text string to the toolbar item, as shown below
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.uix.snackbar import Snackbar
KV = '''
MDBoxLayout:
orientation: "vertical"
MDTopAppBar:
title: "MDTopAppBar"
left_action_items: [["menu", "This is the navigation"]]
right_action_items:
[["dots-vertical", lambda x: app.callback(x), "this is the More Actions"]]
MDLabel:
text: "Content"
halign: "center"
'''
class Test(MDApp):
def build(self):
return Builder.load_string(KV)
def callback(self, button):
Snackbar(text="Hello World").open()
Test().run()
Material design 3 style
-----------------------
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.uix.toolbar import MDTopAppBar
KV = '''
MDScreen:
MDBoxLayout:
id: box
orientation: "vertical"
spacing: "12dp"
pos_hint: {"top": 1}
adaptive_height: True
'''
class TestNavigationDrawer(MDApp):
def build(self):
self.theme_cls.material_style = "M3"
return Builder.load_string(KV)
def on_start(self):
for type_height in ["medium", "large", "small"]:
self.root.ids.box.add_widget(
MDTopAppBar(
type_height=type_height,
headline_text=f"Headline {type_height.lower()}",
md_bg_color="#2d2734",
left_action_items=[["arrow-left", lambda x: x]],
right_action_items=[
["attachment", lambda x: x],
["calendar", lambda x: x],
["dots-vertical", lambda x: x],
],
title="Title" if type_height == "small" else ""
)
)
TestNavigationDrawer().run()
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-m3.png
:align: center
"""
__all__ = ("MDTopAppBar", "MDBottomAppBar", "ActionTopAppBarButton")
import os
from math import cos, radians, sin
from typing import Union
from kivy.animation import Animation
from kivy.clock import Clock
from kivy.core.window import Window
from kivy.lang import Builder
from kivy.metrics import dp
from kivy.properties import (
BooleanProperty,
ColorProperty,
ListProperty,
NumericProperty,
ObjectProperty,
OptionProperty,
StringProperty,
)
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.floatlayout import FloatLayout
from kivymd import uix_path
from kivymd.color_definitions import text_colors
from kivymd.theming import ThemableBehavior
from kivymd.uix.behaviors import (
CommonElevationBehavior,
DeclarativeBehavior,
ScaleBehavior,
SpecificBackgroundColorBehavior,
)
from kivymd.uix.button import MDFloatingActionButton, MDIconButton
from kivymd.uix.controllers import WindowController
from kivymd.uix.list import OneLineIconListItem
from kivymd.uix.menu import MDDropdownMenu
from kivymd.uix.tooltip import MDTooltip
from kivymd.utils.set_bars_colors import set_bars_colors
with open(
os.path.join(uix_path, "toolbar", "toolbar.kv"), encoding="utf-8"
) as kv_file:
Builder.load_string(kv_file.read())
class ActionBottomAppBarButton(MDFloatingActionButton, ScaleBehavior):
"""
Implements a floating action button (FAB) for a toolbar with type 'bottom'.
"""
class ActionTopAppBarButton(MDIconButton, MDTooltip):
"""Implements action buttons on the toolbar."""
# The text of the menu item of the corresponding action button that will
# be displayed in the `OverFlowMenu` menu.
overflow_text = StringProperty()
class ActionOverFlowButton(ActionTopAppBarButton):
"""Implements a toolbar action button for the `OverFlowMenu` menu."""
icon = "dots-vertical"
class OverFlowMenu(MDDropdownMenu):
"""
Implements a menu for the items (:class:`~OverFlowMenuItem`) of the
corresponding action buttons.
"""
class OverFlowMenuItem(OneLineIconListItem):
"""Implements a menu (:class:`~OverFlowMenu`) item."""
icon = StringProperty()
class NotchedBox(
ThemableBehavior,
CommonElevationBehavior,
SpecificBackgroundColorBehavior,
BoxLayout,
):
elevation = NumericProperty(4)
notch_radius = NumericProperty()
notch_center_x = NumericProperty("100dp")
_indices_right = ListProperty()
_vertices_right = ListProperty()
_indices_left = ListProperty()
_vertices_left = ListProperty()
_rounded_rectangle_height = NumericProperty("6dp")
_total_angle = NumericProperty(180)
_rectangle_left_pos = ListProperty([0, 0])
_rectangle_left_width = NumericProperty()
_rectangle_right_pos = ListProperty([0, 0])
_rectangle_right_width = NumericProperty()
_rounding_percentage = NumericProperty(0.15)
_shift = NumericProperty(dp(4))
def __init__(self, **kw):
super().__init__(**kw)
self.bind(
size=self._update_canvas,
pos=self._update_canvas,
notch_radius=self._update_canvas,
notch_center_x=self._update_canvas,
)
Clock.schedule_once(self._update_canvas)
def _update_canvas(self, *args):
pos = self.pos
size = [
self.width,
self.size[1] - self._rounded_rectangle_height / 2,
]
notch_center_x = self.pos[0] + self.notch_center_x
circle_radius = self.notch_radius
degree_diff = int((180 - self._total_angle) / 2)
circle_center = [notch_center_x, pos[1] + size[1]]
left_circle_pos = self._points_on_circle(
circle_center, circle_radius, 180 + degree_diff, 270
)
self._rectangle_left_pos = [
pos[0],
pos[1] + size[1] - self._rounded_rectangle_height / 2,
]
self._rectangle_left_width = left_circle_pos[0][0] - self.pos[0]
right_circle_pos = self._points_on_circle(
circle_center, circle_radius, -degree_diff, -90
)
self._rectangle_right_pos = [
right_circle_pos[0][0],
pos[1] + size[1] - self._rounded_rectangle_height / 2,
]
self._rectangle_right_width = pos[0] + size[0] - right_circle_pos[0][0]
raw_vertices_left = self._make_vertices(
pos, [notch_center_x - pos[0], size[1]], "left", left_circle_pos
)
raw_vertices_right = self._make_vertices(
[notch_center_x, pos[1]],
[size[0] + pos[0] - notch_center_x, size[1]],
"right",
right_circle_pos,
)
left_vertices, left_indices = self._make_vertices_indices(
raw_vertices_left
)
right_vertices, right_indices = self._make_vertices_indices(
raw_vertices_right
)
self._update_mesh(left_vertices, left_indices, "left")
self._update_mesh(right_vertices, right_indices, "right")
def _update_mesh(self, vertices, indices, mode):
if mode == "left":
self._indices_left = indices
self._vertices_left = vertices
else:
self._indices_right = indices
self._vertices_right = vertices
return True
@staticmethod
def _make_vertices_indices(points_list):
vertices = []
indices = []
for index, point in enumerate(points_list):
indices.append(index)
vertices.extend([point[0], point[1], 0, 0])
return [vertices, indices]
@staticmethod
def _make_vertices(rectangle_pos, rectangle_size, mode, notch_points=[]):
x = rectangle_pos[0]
y = rectangle_pos[1]
w = rectangle_size[0]
h = rectangle_size[1]
if mode == "left":
rectangle_vertices = [[x, y], [x, y + h]]
elif mode == "right":
rectangle_vertices = [[x + w, y], [x + w, y + h]]
rectangle_vertices.extend(notch_points)
if mode == "left":
rectangle_vertices.extend([[x + w, y]])
elif mode == "right":
rectangle_vertices.extend([[x, y]])
return rectangle_vertices
@staticmethod
def _points_on_circle(center, radius, start_angle, end_angle):
points = []
y_diff = False
if end_angle >= 180:
step = 1
end_angle += 1
elif end_angle <= 0:
step = -1
end_angle -= 1
else:
raise Exception("Invalid value for start angle")
for degree in range(start_angle, end_angle, step):
angle = radians(degree)
x = center[0] + (radius * cos(angle))
y = center[1] + (radius * sin(angle))
if y_diff is False:
y_diff = abs(y - center[1])
y += y_diff
points.append([x, y])
return points
class MDTopAppBar(DeclarativeBehavior, NotchedBox, WindowController):
"""
:Events:
`on_action_button`
Method for the button used for the :class:`~MDBottomAppBar` class.
"""
left_action_items = ListProperty()
"""
The icons on the left of the toolbar.
To add one, append a list like the following:
.. code-block:: kv
MDTopAppBar:
left_action_items: ["dots-vertical", callback, "tooltip text", "overflow text"]
``icon_name`` - is a string that corresponds to an icon definition:
.. code-block:: kv
MDTopAppBar:
right_action_items: [["home"]]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-icon.png
:align: center
``callback`` - is the function called on a touch release event and:
.. code-block:: kv
MDTopAppBar:
right_action_items: [["home", lambda x: app.callback(x)]]
.. code-block:: python
class Test(MDApp):
def callback(self, instance_action_top_appbar_button):
print(instance_action_top_appbar_button)
``tooltip text`` - is the text to be displayed in the tooltip:
.. code-block:: kv
MDTopAppBar:
right_action_items:
[
["home", lambda x: app.callback(x), "Home"],
["message-star", lambda x: app.callback(x), "Message star"],
["message-question", lambda x: app.callback(x), "Message question"],
["message-reply", lambda x: app.callback(x), "Message reply"],
]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-tooltip-text.gif
:align: center
``overflow text`` - is the text for menu items (:class:`~OverFlowMenuItem`)
of the corresponding action buttons:
.. code-block:: kv
MDTopAppBar:
right_action_items:
[
["home", lambda x: app.callback(x), "", "Home"],
["message-star", lambda x: app.callback(x), "", "Message star"],
["message-question", lambda x: app.callback(x), "" , "Message question"],
["message-reply", lambda x: app.callback(x), "", "Message reply"],
]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-overflow-text.png
:align: center
Both the ``callback`` and ``tooltip text`` and ``overflow text`` are
optional but the order must be preserved.
:attr:`left_action_items` is an :class:`~kivy.properties.ListProperty`
and defaults to `[]`.
"""
right_action_items = ListProperty()
"""
The icons on the left of the toolbar.
Works the same way as :attr:`left_action_items`.
:attr:`right_action_items` is an :class:`~kivy.properties.ListProperty`
and defaults to `[]`.
"""
title = StringProperty()
"""
Text toolbar.
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-title.png
:align: center
:attr:`title` is an :class:`~kivy.properties.StringProperty`
and defaults to `''`.
"""
mode = OptionProperty(
"center", options=["free-end", "free-center", "end", "center"]
)
"""
Floating button position. Only for :class:`~MDBottomAppBar` class.
Available options are: `'free-end'`, `'free-center'`, `'end'`, `'center'`.
.. rubric:: Mode "end":
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
title: "Title"
icon: "git"
type: "bottom"
left_action_items: [["menu", lambda x: x]]
mode: "end"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-9.png
:align: center
.. rubric:: Mode "free-end":
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
mode: "free-end"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-10.png
:align: center
.. rubric:: Mode "free-center":
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
mode: "free-center"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-free-center.png
:align: center
.. rubric:: Mode "center":
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
mode: "center"
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-center.png
:align: center
:attr:`mode` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'center'`.
"""
type = OptionProperty("top", options=["top", "bottom"])
"""
When using the :class:`~MDBottomAppBar` class, the parameter ``type``
must be set to `'bottom'`:
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
type: "bottom"
Available options are: `'top'`, `'bottom'`.
:attr:`type` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'top'`.
"""
opposite_colors = BooleanProperty(False)
"""
Changes the color of the label to the color opposite to the main theme.
.. code-block:: kv
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:
opposite_colors: True
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-opposite-false.png
:align: center
"""
md_bg_bottom_color = ColorProperty(None)
"""
The background color in (r, g, b, a) format for the toolbar with the
``bottom`` mode.
.. versionadded:: 1.0.0
.. code-block:: kv
MDBottomAppBar:
MDTopAppBar:
md_bg_bottom_color: 0, 1, 0, 1
icon_color: self.md_bg_bottom_color
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-md-bg-bottom-color.png
:align: center
:attr:`md_bg_bottom_color` is an :class:`~kivy.properties.ColorProperty`
and defaults to `None`.
"""
set_bars_color = BooleanProperty(False)
"""
If `True` the background color of the bar status will be set automatically
according to the current color of the toolbar.
.. versionadded:: 1.0.0
See `set_bars_colors <https://kivymd.readthedocs.io/en/latest/api/kivymd/utils/set_bars_colors/>`
for more information.
:attr:`set_bars_color` is an :class:`~kivy.properties.BooleanProperty`
and defaults to `False`.
"""
use_overflow = BooleanProperty(False)
"""
As a top app bar is resized, actions move to the overflow menu from right
to left.
.. versionadded:: 1.0.0
.. code-block:: kv
MDTopAppBar:
title: "MDTopAppBar"
use_overflow: True
right_action_items:
[
["home", lambda x: app.callback(x), "Home", "Home"],
["message-star", lambda x: app.callback(x), "Message star", "Message star"],
["message-question", lambda x: app.callback(x), "Message question", "Message question"],
["message-reply", lambda x: app.callback(x), "Message reply", "Message reply"],
]
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/toolbar-use-overflow.gif
:align: center
:attr:`use_overflow` is an :class:`~kivy.properties.BooleanProperty`
and defaults to `False`.
"""
overflow_cls = ObjectProperty()
"""
Must be an object of the :class:`~kivymd.uix.menu.MDDropdownMenu' class.
See :class:`~kivymd.uix.menu.MDDropdownMenu` class documentation for more
information.
.. versionadded:: 1.0.0
.. code-block:: python
from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.uix.menu import MDDropdownMenu
KV = '''
#:import CustomOverFlowMenu __main__.CustomOverFlowMenu
MDBoxLayout:
orientation: "vertical"
MDTopAppBar:
title: "MDTopAppBar"
use_overflow: True
overflow_cls: CustomOverFlowMenu()
right_action_items:
[
["home", lambda x: app.callback(x), "Home", "Home"],
["message-star", lambda x: app.callback(x), "Message star", "Message star"],
["message-question", lambda x: app.callback(x), "Message question", "Message question"],
["message-reply", lambda x: app.callback(x), "Message reply", "Message reply"],
]
MDLabel:
text: "Content"
halign: "center"
'''
class CustomOverFlowMenu(MDDropdownMenu):
# In this class you can set custom properties for the overflow menu.
pass
class Test(MDApp):
def build(self):
return Builder.load_string(KV)
def callback(self, instance_action_top_appbar_button):
print(instance_action_top_appbar_button)
Test().run()
:attr:`overflow_cls` is an :class:`~kivy.properties.ObjectProperty`
and defaults to `None`.
"""
# Attributes only for the BottomAppBar class.
icon = StringProperty()
"""
Floating button. Only for :class:`~MDBottomAppBar` class.
:attr:`icon` is an :class:`~kivy.properties.StringProperty`
and defaults to `'android'`.
"""
icon_color = ColorProperty()
"""
Color action button. Only for :class:`~MDBottomAppBar` class.
:attr:`icon_color` is an :class:`~kivy.properties.ColorProperty`
and defaults to `[]`.
"""
# MD3 Style attributes.
anchor_title = OptionProperty(None, options=["left", "center", "right"])
"""
Position toolbar title. Only used with `material_style = 'M3'`
Available options are: `'left'`, `'center'`, `'right'`.
:attr:`anchor_title` is an :class:`~kivy.properties.OptionProperty`
and defaults to `None`.
"""
headline_text = StringProperty()
"""
Headline text toolbar.
.. versionadded:: 1.0.0
:attr:`headline_text` is an :class:`~kivy.properties.StringProperty`
and defaults to `''`.
"""
headline_text_color = ColorProperty(None)
"""
Headline text color.
.. versionadded:: 1.0.0
:attr:`headline_text_color` is an :class:`~kivy.properties.ColorProperty`
and defaults to `None`.
"""
type_height = OptionProperty("small", options=["medium", "large", "small"])
"""
Toolbar height type.
.. versionadded:: 1.0.0
Available options are: 'small', 'large', 'small'.
:attr:`type_height` is an :class:`~kivy.properties.OptionProperty`
and defaults to `'small'`.
"""
# List of action buttons (ActionTopAppBarButton instance) that have been
# .added to the overflow
_hidden_items = []
# See `kivymd.uix.menu.MDDropdownMenu.items` attribute.
_overflow_menu_items = []
def __init__(self, **kwargs):
self.action_button = ActionBottomAppBarButton()
super().__init__(**kwargs)
self.register_event_type("on_action_button")
if not self.icon_color:
self.icon_color = self.theme_cls.primary_color
self.bind(specific_text_color=self.update_action_bar_text_colors)
self.theme_cls.bind(
material_style=self.update_bar_height,
primary_palette=self.update_md_bg_color,
)
Clock.schedule_once(
lambda x: self.on_left_action_items(0, self.left_action_items)
)
Clock.schedule_once(
lambda x: self.on_right_action_items(0, self.right_action_items)
)
Clock.schedule_once(lambda x: self.set_md_bg_color(0, self.md_bg_color))
Clock.schedule_once(lambda x: self.on_type_height(0, self.type_height))
Clock.schedule_once(
lambda x: self.update_anchor_title(self.theme_cls.material_style)
)
Clock.schedule_once(self.update_floating_radius)
Clock.schedule_once(self.check_overflow_cls)
def set_headline_font_style(self, interval: Union[int, float]) -> None:
if self.type_height in ("medium", "large"):
self.ids.label_headline.font_style = {
"medium": "H6",
"large": "H5",
}[self.type_height]
def on_width(self, instance_toolbar, width: float) -> None:
"""
Called when the toolbar is resized (size of the application window).
"""
if self.mode == "center":
self.action_button.x = width / 2 - self.action_button.width / 2
else:
self.action_button.x = width - self.action_button.width * 2
# The user reduces the width of the window.
if (
self.get_window_width_resizing_direction() == "left"
and self.use_overflow
and self.ids.label_title.is_shortened
):
if not self.overflow_action_button_is_added():
self.add_overflow_button()
self.add_action_button_to_overflow()
# The user increases the width of the window.
if (
self.get_window_width_resizing_direction() == "right"
and self.use_overflow
and not self.ids.label_title.is_shortened
and self.overflow_cls.items
):
self.return_action_button_to_toolbar()
def return_action_button_to_toolbar(self) -> None:
if len(self._hidden_items):
action_button = self._hidden_items.pop()
self.ids.right_actions.add_widget(action_button, index=1)
self.update_overflow_menu_items(action_button)
if not len(self._hidden_items):
self.remove_overflow_button()
def remove_overflow_button(self) -> None:
"""Removes an overflow button to the toolbar."""
if self.overflow_action_button_is_added():
action_overflow_button = self.ids.right_actions.children[0]
self.ids.right_actions.remove_widget(action_overflow_button)
self._overflow_menu_items = []
def add_overflow_button(self) -> None:
"""Adds an overflow button to the toolbar."""
self.ids.right_actions.add_widget(
ActionOverFlowButton(
theme_text_color="Custom"
if not self.opposite_colors
else "Primary",
text_color=self.specific_text_color,
opposite_colors=self.opposite_colors,
on_release=lambda x: self.overflow_cls.open(),
)
)
def overflow_action_button_is_added(self) -> bool:
"""
Returns `True` if at least one action button
(:class:`~ActionTopAppBarButton') on the toolbar is added to the
overflow.
"""
if (
not self.ids.right_actions.children[0].__class__
is ActionOverFlowButton
):
return False
return True
def add_action_button_to_overflow(self):
"""Adds an overflow button to the toolbar."""
if len(self.ids.right_actions.children) > 1:
button_to_be_added = self.ids.right_actions.children[1]
self._hidden_items.append(button_to_be_added)
self.ids.right_actions.remove_widget(button_to_be_added)
self._overflow_menu_items.append(
{
"viewclass": "OverFlowMenuItem",
"icon": button_to_be_added.icon,
"text": button_to_be_added.overflow_text,
"height": dp(48),
"on_press": lambda *x: button_to_be_added.on_release(*x),
}
)
self.overflow_cls.items = self._overflow_menu_items
self.overflow_cls.caller = self.ids.right_actions.children[0]
def check_overflow_cls(self, interval: Union[int, float]) -> None:
"""
If the user does not set the :attr:`overflow_cls` attribute but uses
overflows, the :attr:`overflow_cls` attribute will use the default
value.
"""
if not self.overflow_cls:
self.overflow_cls = self.get_default_overflow_cls()
def on_type(self, instance_toolbar, type_value: str) -> None:
"""Called when the value of the :attr:`type` attribute changes."""
if type_value == "bottom":
self.action_button.bind(center_x=self.setter("notch_center_x"))
self.action_button.bind(
on_release=lambda x: self.dispatch("on_action_button")
)
self.action_button.x = (
Window.width / 2 - self.action_button.width / 2
)
self.action_button.y = (
(self.center[1] - self.height / 2)
+ self.theme_cls.standard_increment / 2
+ self._shift
)
self.shadow_offset = [0, 30]
self.on_mode(None, self.mode)
def on_type_height(self, instance_toolbar, height_type_value: str) -> None:
"""
Called when the value of the :attr:`type_height` attribute changes.
"""
if self.theme_cls.material_style == "M2":
self.height = self.theme_cls.standard_increment
else:
if self.type != "bottom":
if height_type_value == "small":
self.height = dp(64)
elif height_type_value == "medium":
self.height = dp(112)
elif height_type_value == "large":
self.height = dp(152)
else:
self.height = self.theme_cls.standard_increment
Clock.schedule_once(self.set_headline_font_style)
def on_action_button(self, *args):
"""
Method for the button used for the :class:`~MDBottomAppBar` class.
"""
def on_overflow_cls(
self, instance_toolbar, instance_overflow_cls: MDDropdownMenu
) -> None:
"""
Called when the value of the :attr:`overflow_cls` attribute changes.
"""
self.overflow_cls = instance_overflow_cls
def on_md_bg_color(self, instance_toolbar, color_value: list) -> None:
"""
Called when the value of the :attr:`md_bg_color` attribute changes.
"""
def on_md_bg_color(interval: Union[int, float]):
if self.type == "bottom":
self.md_bg_color = [0, 0, 0, 0]
else:
if self.set_bars_color:
set_bars_colors(
color_value, None, self.theme_cls.theme_style
)
Clock.schedule_once(on_md_bg_color)
def on_left_action_items(self, instance_toolbar, items_value: list) -> None:
"""
Called when the value of the :attr:`left_action_items` attribute
changes.
"""
def on_left_action_items(interval: Union[int, float]):
self.update_action_bar(self.ids.left_actions, items_value)
Clock.schedule_once(on_left_action_items)
def on_right_action_items(
self, instance_toolbar, items_value: list
) -> None:
"""
Called when the value of the :attr:`right_action_items` attribute
changes.
"""
def on_right_actions(interval: Union[int, float]):
self.update_action_bar(self.ids.right_actions, items_value)
Clock.schedule_once(on_right_actions)
def on_icon(self, instance_toolbar, icon_name: str) -> None:
"""Called when the value of the :attr:`icon` attribute changes."""
self.action_button.icon = icon_name
def on_icon_color(self, instance, icon_name: str) -> None:
"""
Called when the value of the :attr:`icon_color` attribute changes.
"""
self.action_button.md_bg_color = icon_name
def on_md_bg_bottom_color(
self, instance_toolbar, color_value: list
) -> None:
"""
Called when the value of the :attr:`md_bg_bottom_color` attribute
changes.
"""
set_bars_colors(None, color_value, self.theme_cls.theme_style)
def on_anchor_title(self, instance_toolbar, anchor_value: str) -> None:
"""
Called when the value of the :attr:`anchor_title` attribute changes.
"""
def on_anchor_title(interval: Union[int, float]):
self.ids.label_title.halign = anchor_value
Clock.schedule_once(on_anchor_title)
def on_mode(self, instance_toolbar, mode_value: str) -> None:
"""Called when the value of the :attr:`made` attribute changes."""
if self.type == "top":
return
def on_mode(interval: Union[int, float]):
def set_button_pos(*args):
self.action_button.x = x
self.action_button.y = y - self._rounded_rectangle_height / 2
self.action_button._hard_shadow_size = (0, 0)
self.action_button._soft_shadow_size = (0, 0)
anim = Animation(
scale_value_x=1, scale_value_y=1, scale_value_z=1, d=0.05
)
anim.bind(on_complete=self.set_shadow)
anim.start(self.action_button)
if mode_value == "center":
self.set_notch()
x = Window.width / 2 - self.action_button.width / 2
y = (
(self.center[1] - self.height / 2)
+ self.theme_cls.standard_increment / 2
+ self._shift
)
elif mode_value == "end":
self.set_notch()
x = Window.width - self.action_button.width * 2
y = (
(self.center[1] - self.height / 2)
+ self.theme_cls.standard_increment / 2
+ self._shift
)
self.right_action_items = []
elif mode_value == "free-end":
self.remove_notch()
x = Window.width - self.action_button.width - dp(10)
y = self.action_button.height + self.action_button.height / 2
elif mode_value == "free-center":
self.remove_notch()
x = Window.width / 2 - self.action_button.width / 2
y = self.action_button.height + self.action_button.height / 2
self.remove_shadow()
anim = Animation(
scale_value_x=0, scale_value_y=0, scale_value_z=0, d=0.1
)
anim.bind(on_complete=set_button_pos)
anim.start(self.action_button)
Clock.schedule_once(on_mode)
def set_md_bg_color(self, instance_toolbar, color_value: list) -> None:
if color_value == [1.0, 1.0, 1.0, 0.0]:
self.md_bg_color = self.theme_cls.primary_color
def set_notch(self) -> None:
anim = Animation(d=0.1) + Animation(
notch_radius=self.action_button.width / 2 + dp(8),
d=0.1,
)
anim.start(self)
def set_shadow(self, *args) -> None:
self.action_button._elevation = self.action_button.elevation
def get_default_overflow_cls(self) -> OverFlowMenu:
return OverFlowMenu(width_mult=4)
def update_overflow_menu_items(self, action_button) -> None:
for data in self.overflow_cls.items:
if data["icon"] == action_button.icon:
self.overflow_cls.items.remove(data)
break
def update_bar_height(
self, instance_theme_manager, material_style_value: str
) -> None:
self.on_type_height(self, self.type_height)
self.update_anchor_title(material_style_value)
def update_floating_radius(self, interval: Union[int, float]) -> None:
self.action_button.radius = self.action_button.width / 2
def update_anchor_title(self, material_style_value: str) -> str:
if material_style_value == "M2":
self.anchor_title = "left"
elif material_style_value == "M3" and self.type != "bottom":
if not self.anchor_title:
self.anchor_title = "center"
elif material_style_value == "M3" and self.type == "bottom":
self.anchor_title = "left"
return self.anchor_title
def update_action_bar(
self, instance_box_layout, action_bar_items: list
) -> None:
instance_box_layout.clear_widgets()
new_width = 0
for item in action_bar_items:
new_width += dp(48)
if len(item) == 1:
item.append(lambda x: None)
if len(item) > 1 and not item[1]:
item[1] = lambda x: None
if len(item) == 2:
if type(item[1]) is str:
item.insert(1, lambda x: None)
else:
item.append("")
instance_box_layout.add_widget(
ActionTopAppBarButton(
icon=item[0],
on_release=item[1],
tooltip_text=item[2],
overflow_text=item[3] if len(item) == 4 else "",
theme_text_color="Custom"
if not self.opposite_colors
else "Primary",
text_color=self.specific_text_color,
opposite_colors=self.opposite_colors,
)
)
instance_box_layout.width = new_width
def update_md_bg_color(self, *args) -> None:
self.md_bg_color = self.theme_cls._get_primary_color()
def update_action_bar_text_colors(self, *args) -> None:
for child in self.ids.left_actions.children:
child.text_color = self.specific_text_color
for child in self.ids.right_actions.children:
child.text_color = self.specific_text_color
def remove_notch(self) -> None:
anim = Animation(d=0.1) + Animation(notch_radius=0, d=0.1)
anim.start(self)
def remove_shadow(self) -> None:
self.action_button._elevation = 0
def _update_specific_text_color(self, instance, value):
if self.specific_text_color in (
[0.0, 0.0, 0.0, 0.87],
[0.0, 0.0, 0.0, 1.0],
[1.0, 1.0, 1.0, 1.0],
):
self.specific_text_color = text_colors[
self.theme_cls.primary_palette
][self.theme_cls.primary_hue]
class MDBottomAppBar(DeclarativeBehavior, FloatLayout):
md_bg_color = ColorProperty([0, 0, 0, 0])
"""
Color toolbar.
:attr:`md_bg_color` is an :class:`~kivy.properties.ColorProperty`
and defaults to `[0, 0, 0, 0]`.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.size_hint_y = None
def add_widget(self, widget, index=0, canvas=None):
if isinstance(widget, MDTopAppBar):
super().add_widget(widget)
return super().add_widget(widget.action_button)
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