# Dash Bootstrap Templates
#### See these features live at : https://hellodash.pythonanywhere.com/theme_explorer
`dash-bootstrap-templates` library provides:
- **54 Bootstrap themed Plotly figure templates**
- You will find Plotly templates in light and dark mode for each of the 26 Bootstrap/Bootswatch themes available in the [Dash Bootstrap Components Library](https://dash-bootstrap-components.opensource.faculty.ai/).
- As of 2.1.0, there are also figure templates based on the [Vizro](https://github.com/mckinsey/vizro) theme.
- These templates will automatically style your figures with Bootstrap theme colors and fonts.
- As of V1.1 a dark mode is available for each theme. This is ideal for use with the [Bootstrap Color Modes](https://getbootstrap.com/docs/5.3/customize/color-modes/) available as of Bootstrap 5.3.0
- **Two [All-in-One](https://dash.plotly.com/all-in-one-components) components** to change themes in a Dash app.
- `ThemeSwitchAIO` toggles between two themes. (For use with Bootstrap < 5.3 Otherwise, use Bootstrap Color Modes)
- `ThemeChangerAIO` select from multiple themes.
- **Examples of a Color Mode Switch** to toggle between a light and dark theme.
- **The dbc.css stylesheet** which styles Dash AG Grid, Dash Core Components and the Dash DataTable with a Bootstrap theme.
- [](https://www.jsdelivr.com/package/gh/AnnMarieW/dash-bootstrap-templates)
> **Usage Notes**:
>
> Dash Bootstrap Templates V2.0.0 required Plotly >= 6.0 If your project requires Plotly 5, please use Dash Bootstrap Templates V1.3.0
>
> - The `ThemeChangerAIO` component and the `dbc.css` stylesheet requires Dash Bootstrap Components>=V1.0.0. It will only
> work with the themes included in Dash Bootstrap Components>=V1.0.0.
>
> - As of V1.0.8, the themes in the `ThemeSwitchAIO` component can be specified as a pathname or a URL. This allows for working
> off-line and with custom stylesheets.
>
> - The Bootstrap themed Plotly figure templates can be used with any Plotly figure. It does not require Dash or
> the Dash Bootstrap Components library.
## Figure Template Quickstart
```python"
pip install dash-bootstrap-templates
```
> Learn more about Plotly figure templates and themes at: https://plotly.com/python/templates/
```python
"""
A sample of 8 of the 26 Bootstrap themed Plotly figure templates available
in the dash-bootstrap-template library
"""
from dash import Dash, html, dcc
import dash_bootstrap_components as dbc
from dash_bootstrap_templates import load_figure_template
import plotly.express as px
df = px.data.gapminder()
templates = [
"bootstrap",
"minty",
"pulse",
"flatly",
"quartz",
"cyborg",
"darkly",
"vapor",
]
load_figure_template(templates)
figures = [
px.scatter(
df.query("year==2007"),
x="gdpPercap",
y="lifeExp",
size="pop",
color="continent",
log_x=True,
size_max=60,
template=template,
title="Gapminder 2007: '%s' theme" % template,
)
for template in templates
]
app = Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP])
app.layout = dbc.Container([dcc.Graph(figure=fig, className="m-4") for fig in figures])
if __name__ == "__main__":
app.run_server(debug=True)
```
## dbc.css stylesheet
The `dash-ag-grid`, `dash-core-components`, the Dash `DataTable` and Plotly figures are not automatically styled with a Bootstrap theme.
An easy way to make your Dash components look better with a Bootstrap theme is to use the stylesheet from
the [dash-bootstrap-templates](https://github.com/AnnMarieW/dash-bootstrap-templates) library. This stylesheet defines the "dbc" class.
Adding `className="dbc dbc-ag-grid"` minimally styles Dash components with your selected Bootstrap theme:
- Makes the text readable in both light and dark themes.
- Uses theme's font-family.
- Changes the accent color to the theme's primary color
You can add the dbc class as an external stylesheet like this:
```
dbc_css = ("https://cdn.jsdelivr.net/gh/AnnMarieW/dash-bootstrap-templates@V1.0.2/dbc.min.css")
app = dash.Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP, dbc_css])
```
Add `className="dbc dbc-ag-grid"` to the outer container of the app or a component like this:
```
app.layout = dbc.Container(
[
...
],
fluid=True,
className="dbc dbc-ag-grid"
)
```
**That's it!** Simply adding `className="dbc dbc-ag-grid"` will make Dash AG Grid, Dash Core Components and the DataTable look better with **ALL** themes included in the `dash-bootstrap-components` library.
> See a live demo at: https://hellodash.pythonanywhere.com/adding-themes/dcc-components
If you have suggestion for improvements or if you find a bug, please let us know on the [issue tracker](https://github.com/AnnMarieW/dash-bootstrap-templates/issues)
**Requires `dash-bootstrap-components>=V1.0.0`**
## Theme Switcher Components
> See a live demo at https://hellodash.pythonanywhere.com/theme_change_components
`dash-bootstrap-templates` has two [All-in-One](https://dash.plotly.com/all-in-one-components) components to change themes.
The `ThemeSwitchAIO` is a switch with icons on the left and right, which is ideal for toggling between a light and a dark theme.
The `ThemeChangerAIO` has a button that opens an `dbc.Offcanvas` component which by default shows all the available themes.
Note the All-in-One component switches the Bootstrap stylesheet for the app and sets the default Plotly figure template
for the theme, however, figures must be updated in a callback in order to render the figure with the new template.
See the callback below for an example. The `template_from_url` is a helper function that returns the template name
based on the theme url. For example `template_from_ur(dbc.themes.SLATE)` returns `"slate"`
## ThemeChangerAIO Quickstart
```python
from dash import Dash, dcc, html, Input, Output
import pandas as pd
import plotly.express as px
import dash_bootstrap_components as dbc
from dash_bootstrap_templates import ThemeChangerAIO, template_from_url
dbc_css = (
"https://cdn.jsdelivr.net/gh/AnnMarieW/dash-bootstrap-templates@V1.0.1/dbc.min.css"
)
app = Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP, dbc_css])
df = pd.DataFrame(
{
"Fruit": ["Apples", "Oranges", "Bananas", "Apples", "Oranges", "Bananas"],
"Amount": [4, 1, 2, 2, 4, 5],
"City": ["SF", "SF", "SF", "Montreal", "Montreal", "Montreal"],
}
)
header = html.H4(
"ThemeChangerAIO Demo", className="bg-primary text-white p-4 mb-2 text-center"
)
buttons = html.Div(
[
dbc.Button("Primary", color="primary"),
dbc.Button("Secondary", color="secondary"),
dbc.Button("Success", color="success"),
dbc.Button("Warning", color="warning"),
dbc.Button("Danger", color="danger"),
dbc.Button("Info", color="info"),
dbc.Button("Light", color="light"),
dbc.Button("Dark", color="dark"),
dbc.Button("Link", color="link"),
],
className="m-4",
)
graph = html.Div(dcc.Graph(id="graph"), className="m-4")
app.layout = dbc.Container(
[
header,
dbc.Row(
[
dbc.Col(ThemeChangerAIO(aio_id="theme", radio_props={"value":dbc.themes.FLATLY}), width=2,),
dbc.Col([buttons, graph],width=10),
]
),
],
className="m-4 dbc",
fluid=True,
)
@app.callback(
Output("graph", "figure"), Input(ThemeChangerAIO.ids.radio("theme"), "value"),
)
def update_graph_theme(theme):
return px.bar(
df, x="Fruit", y="Amount", color="City", barmode="group", template=template_from_url(theme)
)
if __name__ == "__main__":
app.run_server(debug=True)
```
---------
```python
```
Here is the same app, but using a the `ThemeSwitchAIO` component to toggle between two themes.
See the [(code here)](https://github.com/AnnMarieW/dash-bootstrap-templates/blob/main/examples/demo_toggle.py).
It's also possible to change the icons. See an example of using Bootstrap icons instead of the default FontAwesome
icons [here](https://github.com/AnnMarieW/dash-bootstrap-templates/blob/main/examples/demo_toggle_icons.py).
## Color Mode Switch
__Requires dash-bootstrap-components>=1.5.0__
This is the recommended way to switch between a light and a dark mode using [Bootstrap Color modes](https://getbootstrap.com/docs/5.3/customize/color-modes/)
available in Bootstrap 5.3.0.
```python
from dash import Dash, html, dcc, Input, Output, clientside_callback, callback
import plotly.express as px
import dash_bootstrap_components as dbc
from dash_bootstrap_templates import load_figure_template
load_figure_template(["minty", "minty_dark"])
df = px.data.gapminder()
app = Dash(__name__, external_stylesheets=[dbc.themes.MINTY, dbc.icons.FONT_AWESOME])
color_mode_switch = html.Span(
[
dbc.Label(className="fa fa-moon", html_for="switch"),
dbc.Switch( id="switch", value=False, className="d-inline-block ms-1", persistence=True),
dbc.Label(className="fa fa-sun", html_for="switch"),
]
)
app.layout = dbc.Container(
[
html.Div(["Bootstrap Light Dark Color Modes Demo"], className="bg-primary text-white h3 p-2"),
color_mode_switch,
dcc.Graph(id="graph", className="border"),
]
)
@callback(
Output("graph", "figure"),
Input("switch", "value"),
)
def update_figure_template(switch_on):
template = "minty" if switch_on else "minty_dark"
fig = px.scatter(
df.query("year==2007"),
x="gdpPercap",
y="lifeExp",
size="pop",
color="continent",
log_x=True,
size_max=60,
template=template,
)
return fig
clientside_callback(
"""
(switchOn) => {
switchOn
? document.documentElement.setAttribute('data-bs-theme', 'light')
: document.documentElement.setAttribute('data-bs-theme', 'dark')
return window.dash_clientside.no_update
}
""",
Output("switch", "id"),
Input("switch", "value"),
)
if __name__ == "__main__":
app.run_server(debug=True)
```
## Dash AG Grid with a Bootstrap theme
Here is an example of the theme change component to show different Bootstrap themes with Dash AG Grid:
See live demo https://hellodash.pythonanywhere.com/adding-themes/ag-grid
## Background
[Dash Labs](https://community.plotly.com/t/introducing-dash-labs/52087) is Plotly library that explores new features for future releases of Dash.
In Dash Labs V0.4.0, there was a cool feature where Bootstrap themed figure templates were created "on the fly". This was a
part of the layout templates project that is no longer being developed.
Even though these Bootstrap themed figure templates will not be included in Dash, the `dash-bootstrap-templates` makes
them available to you. The figure templates are created using the Dash Labs' algorithms and saved in json format. When
you use `load_figure_template()` in your app, it loads the json file, adds it to `plotly.io` and sets it as the default figure template for an app. See more
information about Plotly figure templates [here](https://plotly.com/python/templates/).
## Available Themes
This library provides a figure template for the following Bootstrap/Bootswatch themes:
templates = [
"bootstrap",
"cerulean",
"cosmo",
"cyborg",
"darkly",
"flatly",
"journal",
"litera",
"lumen",
"lux",
"materia",
"minty",
"morph",
"pulse",
"quartz",
"sandstone",
"simplex",
"sketchy",
"slate",
"solar",
"spacelab",
"superhero",
"united",
"vapor",
"vizro",
"yeti",
"zephyr"
]
templates_dark = ['bootstrap_dark', 'cerulean_dark', 'cosmo_dark', 'cyborg_dark', 'darkly_dark', 'flatly_dark', 'journal_dark', 'litera_dark', 'lumen_dark', 'lux_dark', 'materia_dark', 'minty_dark', 'morph_dark', 'pulse_dark', 'quartz_dark', 'sandstone_dark', 'simplex_dark', 'sketchy_dark', 'slate_dark', 'solar_dark', 'spacelab_dark', 'superhero_dark', 'united_dark', 'vapor_dark', 'vizro_dark, 'yeti_dark', 'zephyr_dark']
Note in dark themes ["cyborg", "darkly", "slate", "solar", "superhero", "vapor"], there is not much difference in the figure templates in light or dark color modes.
## ThemeChangerAIO Reference
**ThemeChangerAIO** is an All-in-One component composed of a parent `html.Div` with
the following components as children:
- `dbc.Button` ("`switch`") Opens the Offcanvas component for user to select a theme.
- `dbc.Offcanvas` ("`offcanvas`")
- `dbc.RadioItems` ("`radio`"). The themes are displayed as RadioItems inside the `dbc.Offcanvas` component.
The `value` is a url for the theme
- `html.Div` is used as the `Output` of the clientside callbacks.
The ThemeChangerAIO component updates the stylesheet when the `value` of radio changes. (ie the user selects a new theme)
- param: `radio_props` A dictionary of properties passed into the dbc.RadioItems component. The default `value` is `dbc.themes.BOOTSTRAP`
- param: `button_props` A dictionary of properties passed into the dbc.Button component.
- param: `offcanvas_props`. A dictionary of properties passed into the dbc.Offcanvas component
- param: `aio_id` The All-in-One component ID used to generate components' dictionary IDs.
The All-in-One component dictionary IDs are available as:
- ThemeChangerAIO.ids.radio(aio_id)
- ThemeChangerAIO.ids.offcanvas(aio_id)
- ThemeChangerAIO.ids.button(aio_id)
## ThemeSwitchAIO Reference
**ThemeSwitchAIO** is an All-in-One component composed of a parent `html.Div` with the following components as children:
- `dbc.Switch` ("`switch`") with icons to the left and right of the switch.
- `dcc.Store` ("`store`") The `themes` are stored in the `data` prop.
- `html.Div` is used as the `Output` of the clientside callbacks.
The ThemeSwitchAIO component updates the stylesheet when triggered by changes to the `value` of `switch` or when
the themes are updated in the "`store`" component. The themes in the switch may be updated in a callback
by changing the theme urls in the "`store`" component.
- param: `switch_props` A dictionary of properties passed into the dbc.Switch component.
- param: `themes` A list of two urls for the external stylesheets or pathnames to files.
- param: `icons` A dict of the icons to the left and right of the switch. The default is
`{"left" :"fa fa-moon", "right" :"fa fa-sun"}`.
- param: `aio_id` The All-in-One component ID used to generate component's dictionary IDs.
The All-in-One component dictionary IDs are available as
- ThemeSwitchAIO.ids.switch(aio_id)
- ThemeSwitchAIO.ids.store(aio_id)
---
### Contributors
Special thanks to @tcbegley and @emilhe for their help with this project.