Source code for panel.template.theme

import pathlib

import param

from bokeh.themes import Theme as _BkTheme, _dark_minimal


[docs]class Theme(param.Parameterized): """ A Theme customizes the look and feel of a Template by providing custom CSS and bokeh Theme class. When adding a new theme a generic Theme class should be created, which is what users will important and set on the Template.theme parameter. Additionally a concrete implementation of the Theme should be created specific to the particular Template being used. For example when adding a DarkTheme there should be a corresponding MaterialDarkTheme which declares the Template class on its _template class variable. In this way a user can always use the generic Theme but the actual CSS and bokeh Theme will depend on the exact Template being used. """ base_css = param.Filename() css = param.Filename() bokeh_theme = param.ClassSelector(class_=(_BkTheme, str)) _template = None __abstract = True @classmethod def find_theme(cls, template_type): if cls._template is template_type: return cls for theme in param.concrete_descendents(cls).values(): if theme._template is template_type: return theme
[docs]class DefaultTheme(Theme): """ The DefaultTheme uses the standard Panel color palette. """ base_css = param.Filename(default=pathlib.Path(__file__).parent / 'default.css') __abstract = True
BOKEH_DARK = dict(_dark_minimal.json) BOKEH_DARK['attrs']['Figure'].update({ "background_fill_color": "#3f3f3f", "border_fill_color": "#2f2f2f", })
[docs]class DarkTheme(Theme): """ The DefaultTheme uses the standard Panel color palette. """ base_css = param.Filename(default=pathlib.Path(__file__).parent / 'dark.css') bokeh_theme = param.ClassSelector(class_=(_BkTheme, str), default=_BkTheme(json=BOKEH_DARK)) __abstract = True
THEMES = { 'default': DefaultTheme, 'dark': DarkTheme }