working condition
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@ -1,5 +1,4 @@
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#:import ScrollEffect kivy.effects.scroll.ScrollEffect
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#:import get_color_from_hex kivy.utils.get_color_from_hex
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<MDSliverAppbar>
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@ -13,7 +12,7 @@
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rgba:
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root.background_color \
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if root.background_color else \
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root.theme_cls.primary_color
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root.theme_cls.primaryColor
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a: root._opacity
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Rectangle:
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pos: self.pos
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@ -31,11 +30,20 @@
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on_scroll_start:
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if not root._scroll_was_moving: root._scroll_was_moving = True
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MDBoxLayout:
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BoxLayout:
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id: scroll_box
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adaptive_height: True
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orientation: "vertical"
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size_hint_y: None
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height: self.minimum_height
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BoxLayout:
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size_hint_y: None
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height: root.max_height
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<MDSliverAppbarContent>
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adaptive_height: True
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md_bg_color:
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self.theme_cls.surfaceColor \
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if self.theme_bg_color == "Primary" else \
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self.md_bg_color
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@ -6,7 +6,10 @@ Components/SliverAppbar
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.. rubric:: MDSliverAppbar is a Material Design widget in KivyMD which gives
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scrollable or collapsible
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`MDTopAppBar <https://kivymd.readthedocs.io/en/latest/components/toolbar/>`_
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`MDTopAppBar <https://kivymd.readthedocs.io/en/latest/components/appbar/>`_
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-appbar-preview.gif
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:align: center
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.. note:: This widget is a modification of the
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`silverappbar.py <https://github.com/kivymd-extensions/akivymd/blob/main/kivymd_extensions/akivymd/uix/silverappbar.py>`_ module.
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@ -20,15 +23,21 @@ Usage
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MDSliverAppbar:
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MDTopAppBar:
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[...]
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MDSliverAppbarHeader:
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# Custom content.
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...
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[...]
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# Custom list.
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MDSliverAppbarContent:
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-app-bar-usage.png
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Anatomy
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-------
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-appbar-anatomy.png
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:align: center
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Example
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@ -39,84 +48,139 @@ Example
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from kivy.lang.builder import Builder
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from kivymd.app import MDApp
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from kivymd.uix.card import MDCard
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from kivymd.uix.list import MDListItem
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KV = '''
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<CardItem>
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size_hint_y: None
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height: "86dp"
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padding: "4dp"
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radius: 12
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<GuitarItem>
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theme_bg_color: "Custom"
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md_bg_color: "2d4a50"
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FitImage:
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source: "avatar.jpg"
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radius: root.radius
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size_hint_x: None
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width: root.height
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MDListItemLeadingAvatar
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source: "avatar.png"
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MDBoxLayout:
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orientation: "vertical"
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adaptive_height: True
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spacing: "6dp"
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padding: "12dp", 0, 0, 0
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pos_hint: {"center_y": .5}
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MDListItemHeadlineText:
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text: "Ibanez"
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MDLabel:
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text: "Title text"
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font_style: "H5"
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bold: True
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adaptive_height: True
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MDListItemSupportingText:
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text: "GRG121DX-BKF"
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MDLabel:
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text: "Subtitle text"
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theme_text_color: "Hint"
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adaptive_height: True
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MDListItemTertiaryText:
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text: "$445,99"
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MDListItemTrailingIcon:
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icon: "guitar-electric"
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MDScreen:
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MDSliverAppbar:
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background_color: "2d4a50"
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hide_appbar: True
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MDTopAppBar:
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type: "medium"
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MDTopAppBarLeadingButtonContainer:
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MDActionTopAppBarButton:
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icon: "arrow-left"
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MDTopAppBarTitle:
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text: "Sliver toolbar"
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MDTopAppBarTrailingButtonContainer:
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MDActionTopAppBarButton:
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icon: "attachment"
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MDActionTopAppBarButton:
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icon: "calendar"
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MDActionTopAppBarButton:
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icon: "dots-vertical"
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MDSliverAppbarHeader:
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MDRelativeLayout:
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FitImage:
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source: "bg.jpg"
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FitImage:
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source: "bg.jpg"
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MDSliverAppbarContent:
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id: content
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orientation: "vertical"
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padding: "12dp"
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spacing: "12dp"
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adaptive_height: True
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theme_bg_color: "Custom"
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md_bg_color: "2d4a50"
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'''
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class CardItem(MDCard):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.elevation = 1
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class GuitarItem(MDListItem):
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...
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class Example(MDApp):
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def build(self):
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self.theme_cls.theme_style = "Dark"
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return Builder.load_string(KV)
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def on_start(self):
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for x in range(10):
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self.root.ids.content.add_widget(CardItem())
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self.root.ids.content.add_widget(GuitarItem())
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Example().run()
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API break
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=========
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1.2.0 version
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-------------
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.. code-block:: kv
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#:import SliverToolbar __main__.SliverToolbar
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Root:
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MDSliverAppbar:
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[...]
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MDSliverAppbarHeader:
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[...]
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MDSliverAppbarContent:
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[...]
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.. code-block:: python
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class SliverToolbar(MDTopAppBar):
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[...]
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2.0.0 version
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-------------
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.. code-block:: kv
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Root:
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MDSliverAppbar:
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[...]
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MDTopAppBar:
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[...]
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MDSliverAppbarHeader:
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[...]
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MDSliverAppbarContent:
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[...]
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"""
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__all__ = ("MDSliverAppbar", "MDSliverAppbarHeader", "MDSliverAppbarContent")
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import os
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from typing import Union
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from kivy.clock import Clock
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from kivy.core.window import Window
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@ -125,13 +189,15 @@ from kivy.properties import (
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BooleanProperty,
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ColorProperty,
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NumericProperty,
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ObjectProperty,
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VariableListProperty,
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ObjectProperty,
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)
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from kivy.uix.boxlayout import BoxLayout
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from kivymd import uix_path
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from kivymd.theming import ThemableBehavior
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from kivymd.uix.boxlayout import MDBoxLayout
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from kivymd.uix.toolbar import MDTopAppBar
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from kivymd.uix.appbar import MDTopAppBar
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with open(
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os.path.join(uix_path, "sliverappbar", "sliverappbar.kv"), encoding="utf-8"
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@ -151,167 +217,33 @@ class MDSliverAppbarContent(MDBoxLayout):
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:class:`~kivymd.uix.boxlayout.MDBoxLayout` class documentation.
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"""
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md_bg_color = ColorProperty([0, 0, 0, 0])
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"""
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See :attr:`~kivymd.uix.sliverappbar.sliverappbar.MDSliverAppbar.background_color`.
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:attr:`md_bg_color` is an :class:`~kivy.properties.ColorProperty`
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and defaults to `[0, 0, 0, 0]`.
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"""
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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Clock.schedule_once(self.set_bg_color)
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def set_bg_color(self, interval: Union[int, float]) -> None:
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if self.md_bg_color == [0, 0, 0, 0]:
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self.md_bg_color = self.theme_cls.bg_normal
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class MDSliverAppbarHeader(MDBoxLayout):
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class MDSliverAppbarHeader(BoxLayout):
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"""
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Sliver app bar header class.
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For more information, see in the
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:class:`~kivymd.uix.boxlayout.MDBoxLayout` class documentation.
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:class:`~kivy.uix.boxlayout.BoxLayout` class documentation.
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"""
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class MDSliverAppbar(MDBoxLayout):
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class MDSliverAppbar(ThemableBehavior, BoxLayout):
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"""
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Sliver app bar class.
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Sliver appbar class.
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For more information, see in the
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:class:`~kivymd.uix.boxlayout.MDBoxLayout` class documentation.
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:class:`~kivymd.theming.ThemableBehavior` and
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:class:`~kivy.uix.boxlayout.BoxLayout`
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classes documentation.
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:Events:
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:attr:`on_scroll_content`
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Called when the list of custom content is being scrolled.
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"""
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toolbar_cls = ObjectProperty()
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"""
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Must be an object of the :class:`~kivymd.uix.toolbar.toolbar.MDTopAppBar' class.
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See :class:`~kivymd.uix.toolbar.toolbar.MDTopAppBar` class documentation
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for more information.
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By default, MDSliverAppbar widget uses the MDTopAppBar class with no
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parameters.
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.. code-block:: python
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from kivy.lang.builder import Builder
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from kivymd.uix.card import MDCard
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from kivymd.uix.toolbar import MDTopAppBar
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KV = '''
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#:import SliverToolbar __main__.SliverToolbar
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<CardItem>
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size_hint_y: None
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height: "86dp"
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padding: "4dp"
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radius: 12
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FitImage:
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source: "avatar.jpg"
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radius: root.radius
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size_hint_x: None
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width: root.height
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MDBoxLayout:
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orientation: "vertical"
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adaptive_height: True
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spacing: "6dp"
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padding: "12dp", 0, 0, 0
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pos_hint: {"center_y": .5}
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MDLabel:
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text: "Title text"
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font_style: "H5"
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bold: True
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adaptive_height: True
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MDLabel:
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text: "Subtitle text"
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theme_text_color: "Hint"
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adaptive_height: True
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MDScreen:
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MDSliverAppbar:
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background_color: "2d4a50"
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toolbar_cls: SliverToolbar()
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MDSliverAppbarHeader:
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MDRelativeLayout:
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FitImage:
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source: "bg.jpg"
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MDSliverAppbarContent:
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id: content
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orientation: "vertical"
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padding: "12dp"
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spacing: "12dp"
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adaptive_height: True
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'''
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class CardItem(MDCard):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.elevation = 1
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class SliverToolbar(MDTopAppBar):
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self.shadow_color = (0, 0, 0, 0)
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self.type_height = "medium"
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self.headline_text = "Headline medium"
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self.left_action_items = [["arrow-left", lambda x: x]]
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self.right_action_items = [
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["attachment", lambda x: x],
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["calendar", lambda x: x],
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["dots-vertical", lambda x: x],
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]
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class Example(MDApp):
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def build(self):
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self.theme_cls.material_style = "M3"
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return Builder.load_string(KV)
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def on_start(self):
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for x in range(10):
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self.root.ids.content.add_widget(CardItem())
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Example().run()
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-app-bar-toolbar-cls.gif
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:align: center
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:attr:`toolbar_cls` is an :class:`~kivy.properties.ObjectProperty`
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and defaults to `None`.
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Fired when the list of custom content is being scrolled.
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"""
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background_color = ColorProperty(None)
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"""
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Background color of toolbar in (r, g, b, a) or string format.
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.. code-block:: kv
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MDSliverAppbar:
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background_color: "2d4a50"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-app-bar-background-color.png
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:align: center
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Background color of appbar in (r, g, b, a) or string format.
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:attr:`background_color` is an :class:`~kivy.properties.ColorProperty`
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and defaults to `None`.
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@ -326,34 +258,40 @@ class MDSliverAppbar(MDBoxLayout):
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MDSliverAppbar:
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max_height: "200dp"
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-app-bar-max-height.png
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-appbar-max-height.png
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:align: center
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:attr:`max_height` is an :class:`~kivy.properties.NumericProperty`
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and defaults to `Window.height / 2`.
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"""
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hide_toolbar = BooleanProperty(True)
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hide_appbar = BooleanProperty(None)
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"""
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Whether to hide the toolbar when scrolling through a list
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Whether to hide the appbar when scrolling through a list
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of custom content.
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.. versionchanged:: 2.0.0
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Rename `hide_toolbar` to `hide_appbar` attribute.
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.. code-block:: kv
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MDSliverAppbar:
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hide_toolbar: False
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hide_appbar: False
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-app-bar-hide-toolbar.gif
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-appbar-hide-appbar-false.gif
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:align: center
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.. code-block:: kv
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MDSliverAppbar:
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hide_toolbar: True
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hide_appbar: True
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-app-bar-hide-toolbar-true.gif
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.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/sliver-appbar-hide-appbar-true.gif
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:align: center
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:attr:`hide_toolbar` is an :class:`~kivy.properties.BooleanProperty`
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and defaults to `True`.
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:attr:`hide_appbar` is an :class:`~kivy.properties.BooleanProperty`
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and defaults to `None`.
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"""
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radius = VariableListProperty([20], length=4)
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@ -395,72 +333,51 @@ class MDSliverAppbar(MDBoxLayout):
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_opacity = NumericProperty()
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_scroll_was_moving = BooleanProperty(False)
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_last_scroll_y_pos = 0.0
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_appbar = ObjectProperty()
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self.register_event_type("on_scroll_content")
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def on_hide_appbar(self, instance, value) -> None:
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"""Fired when the `hide_appbar` value changes."""
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if not value:
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self.background_color = self.theme_cls.transparentColor
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def on_scroll_content(
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self,
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instance_sliverappbar: object = None,
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instance: object = None,
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value: float = 1.0,
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||||
direction: str = "up",
|
||||
):
|
||||
"""
|
||||
Called when the list of custom content is being scrolled.
|
||||
Fired when the list of custom content is being scrolled.
|
||||
|
||||
:param instance_sliverappbar: :class:`~MDSliverAppbar`
|
||||
:param instance: :class:`~MDSliverAppbar`
|
||||
:param value: see :attr:`~kivy.uix.scrollview.ScrollView.scroll_y`
|
||||
:param direction: scroll direction: 'up/down'
|
||||
"""
|
||||
|
||||
def on_background_color(
|
||||
self, instance_sliver_appbar, color_value: list
|
||||
) -> None:
|
||||
if self.toolbar_cls:
|
||||
self.toolbar_cls.md_bg_color = color_value
|
||||
def on_background_color(self, instance, color) -> None:
|
||||
"""Fired when the `background_color` value changes."""
|
||||
|
||||
def on_toolbar_cls(
|
||||
self, instance_sliver_appbar, instance_toolbar_cls: MDTopAppBar
|
||||
) -> None:
|
||||
"""Called when a value is set to the :attr:`toolbar_cls` parameter."""
|
||||
|
||||
def on_toolbar_cls(*args):
|
||||
# If an MDTopAppBar object is already in use, delete it
|
||||
# before adding a new MDTopAppBar object.
|
||||
for widget in self.ids.float_box.children:
|
||||
if issubclass(widget.__class__, MDTopAppBar):
|
||||
self.ids.float_box.remove_widget(widget)
|
||||
|
||||
# Adding a custom MDTopAppBar object.
|
||||
if issubclass(instance_toolbar_cls.__class__, MDTopAppBar):
|
||||
instance_toolbar_cls.pos_hint = {"top": 1}
|
||||
instance_toolbar_cls.elevation = 0
|
||||
self.ids.float_box.add_widget(instance_toolbar_cls)
|
||||
else:
|
||||
raise MDSliverAppbarException(
|
||||
"The `toolbar_cls` parameter must be an object of the "
|
||||
"`kivymd.uix.toolbar.MDTopAppBar class`"
|
||||
)
|
||||
|
||||
# Schedule using for declarative style.
|
||||
# Otherwise get AttributeError exception.
|
||||
Clock.schedule_once(on_toolbar_cls)
|
||||
if self._appbar:
|
||||
self._appbar.canvas.get_group("md-top-app-bar-color")[
|
||||
0
|
||||
].rgba = color
|
||||
|
||||
def on_vbar(self) -> None:
|
||||
if not self.background_color:
|
||||
self.background_color = self.theme_cls.primary_color
|
||||
|
||||
if not self.toolbar_cls:
|
||||
self.toolbar_cls = self.get_default_toolbar()
|
||||
self.background_color = self.theme_cls.primaryColor
|
||||
|
||||
scroll_box = self.ids.scroll_box
|
||||
vbar = self.ids.scroll.vbar
|
||||
toolbar_percent = (self.toolbar_cls.height / scroll_box.height) * 100
|
||||
appbar_percent = (self._appbar.height / scroll_box.height) * 100
|
||||
current_percent = (vbar[0] + vbar[1]) * 100
|
||||
percent_min = (
|
||||
1 - self.max_height / scroll_box.height
|
||||
) * 100 + toolbar_percent
|
||||
) * 100 + appbar_percent
|
||||
|
||||
if self._scroll_was_moving:
|
||||
direction = self._get_direction_swipe(self.ids.scroll.scroll_y)
|
||||
|
|
@ -469,38 +386,47 @@ class MDSliverAppbar(MDBoxLayout):
|
|||
"on_scroll_content", self.ids.scroll.scroll_y, direction
|
||||
)
|
||||
|
||||
if self.hide_toolbar:
|
||||
if self.hide_appbar:
|
||||
if percent_min <= current_percent:
|
||||
opacity = (current_percent - percent_min) / (100 - percent_min)
|
||||
self._opacity = self.max_opacity * (1 - opacity)
|
||||
self.background_color = self.background_color[0:3] + [
|
||||
1 - opacity
|
||||
]
|
||||
self.toolbar_cls._hard_shadow_a = 1 - opacity
|
||||
self.toolbar_cls._soft_shadow_a = 1 - opacity
|
||||
else:
|
||||
self.background_color = self.background_color[0:3] + [1]
|
||||
|
||||
def get_default_toolbar(self) -> MDTopAppBar:
|
||||
"""Called if no value is passed for the toolbar_cls attribute."""
|
||||
|
||||
return MDTopAppBar(
|
||||
pos_hint={"top": 1}, md_bg_color=self.background_color
|
||||
)
|
||||
|
||||
def add_widget(self, widget, index=0, canvas=None):
|
||||
if issubclass(widget.__class__, MDSliverAppbarContent):
|
||||
if isinstance(widget, MDSliverAppbarContent):
|
||||
Clock.schedule_once(lambda x: self._set_radius(widget))
|
||||
self.ids.scroll_box.add_widget(widget)
|
||||
elif issubclass(widget.__class__, MDSliverAppbarHeader):
|
||||
elif isinstance(widget, MDSliverAppbarHeader):
|
||||
self.ids.header.add_widget(widget)
|
||||
elif isinstance(widget, MDTopAppBar):
|
||||
self._appbar = widget
|
||||
widget.pos_hint = {"top": 1}
|
||||
self.ids.float_box.add_widget(widget)
|
||||
else:
|
||||
super().add_widget(widget, index=index, canvas=canvas)
|
||||
|
||||
def _set_radius(self, instance: MDSliverAppbarContent) -> None:
|
||||
def on__appbar(self, instance, value):
|
||||
def set_rgba_appbar(*args):
|
||||
if self.hide_appbar:
|
||||
value.theme_elevation_level = "Custom"
|
||||
value.elevation_level = 0
|
||||
value.theme_shadow_color = "Custom"
|
||||
value.shadow_color = self.theme_cls.transparentColor
|
||||
value.md_bg_color = self.theme_cls.transparentColor
|
||||
value.canvas.get_group("md-top-app-bar-color")[
|
||||
0
|
||||
].rgba = self.theme_cls.transparentColor
|
||||
|
||||
Clock.schedule_once(set_rgba_appbar, 0.5)
|
||||
|
||||
def _set_radius(self, instance: MDSliverAppbarContent):
|
||||
instance.radius = self.radius
|
||||
|
||||
def _get_direction_swipe(self, current_percent: float) -> str:
|
||||
def _get_direction_swipe(self, current_percent: float):
|
||||
if self._last_scroll_y_pos > current_percent:
|
||||
direction = "up"
|
||||
else:
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue