PyBitmessage/src/kivymd/toolbar.py

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# -*- coding: utf-8 -*-
from kivy.clock import Clock
from kivy.lang import Builder
from kivy.metrics import dp
from kivy.properties import ListProperty, StringProperty, OptionProperty
from kivy.uix.boxlayout import BoxLayout
from kivymd.backgroundcolorbehavior import BackgroundColorBehavior
from kivymd.button import MDIconButton
from kivymd.theming import ThemableBehavior
from kivymd.elevationbehavior import ElevationBehavior
Builder.load_string('''
#:import m_res kivymd.material_resources
<Toolbar>
size_hint_y: None
height: root.theme_cls.standard_increment
background_color: root.background_color
padding: [root.theme_cls.horizontal_margins - dp(12), 0]
opposite_colors: True
elevation: 6
BoxLayout:
id: left_actions
orientation: 'horizontal'
size_hint_x: None
padding: [0, (self.height - dp(48))/2]
BoxLayout:
padding: dp(12), 0
MDLabel:
font_style: 'Title'
opposite_colors: root.opposite_colors
theme_text_color: root.title_theme_color
text_color: root.title_color
text: root.title
shorten: True
shorten_from: 'right'
BoxLayout:
id: right_actions
orientation: 'horizontal'
size_hint_x: None
padding: [0, (self.height - dp(48))/2]
''')
class Toolbar(ThemableBehavior, ElevationBehavior, BackgroundColorBehavior,
BoxLayout):
left_action_items = ListProperty()
"""The icons on the left of the Toolbar.
To add one, append a list like the following:
['icon_name', callback]
where 'icon_name' is a string that corresponds to an icon definition and
callback is the function called on a touch release event.
"""
right_action_items = ListProperty()
"""The icons on the left of the Toolbar.
Works the same way as :attr:`left_action_items`
"""
title = StringProperty()
"""The text displayed on the Toolbar."""
title_theme_color = OptionProperty(None, allownone=True,
options=['Primary', 'Secondary', 'Hint',
'Error', 'Custom'])
title_color = ListProperty(None, allownone=True)
background_color = ListProperty([0, 0, 0, 1])
def __init__(self, **kwargs):
super(Toolbar, self).__init__(**kwargs)
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))
def on_left_action_items(self, instance, value):
self.update_action_bar(self.ids['left_actions'], value)
def on_right_action_items(self, instance, value):
self.update_action_bar(self.ids['right_actions'], value)
def update_action_bar(self, action_bar, action_bar_items):
action_bar.clear_widgets()
new_width = 0
for item in action_bar_items:
new_width += dp(48)
action_bar.add_widget(MDIconButton(icon=item[0],
on_release=item[1],
opposite_colors=True,
text_color=self.title_color,
theme_text_color=self.title_theme_color))
action_bar.width = new_width