Card

Introduction

Card widget in Supervisely is a simple widget that can be used to display information or content in a compact format. It can be controlled by setting loading/lock properties and can be collapsed to save space. It provides a straightforward and easy-to-use solution for displaying information clearly and concisely.

Function signature

card = Card(
    title="Title",
    description="Description text",
    collapsable=False,
    content=Text("some text"),
    content_top_right=None,
    lock_message="Card content is locked",
    widget_id=None,
)

Parameters

Parameters	Type	Description
title	str	Card widget title
description	str	Description text for card widget
collapsable	bool	Enable collapsable property to allow minimize card widget
content	Widget	Widget to place in Card widget
content_top_right	Widget	Widget to place in top right corner of Card widget
lock_message	str	Message to display when card will be locked
widget_id	str	Widget ID

title

Card widget title

type: str

default None

card = Card(title="Card title")

description

Description text for card widget

type: str

default None

card = Card(description="card description")

collapsable

Enable collapsable property to allow minimize card widget

type: bool

default False

card = Card(
    title="Card title",
    description="card description",
    content=Text("some text"),
    collapsable=True
)

content

Widget to place in Card widget

type: Widget

default None

card = Card(
    title="Card title",
    description="card description",
    content=Container(widgets=[Text("some text"), Button("Button")])
)

content_top_right

Widget to place in top right corner of Card widget

type: Widget

default None

card = Card(
    title="Card title",
    description="card description",
    content=Text("some text"),
    content_top_right=Button("Button"),
)

lock_message

Message to display when card will be locked

type: str

default "Card content is locked"

card = Card(
    content=Text("some text"),
    lock_message='Press "UNLOCK" button to unlock the card.',
)

widget_id

Widget ID

type: str

default None

Methods and attributes

Attributes and Methods	Description
loading	Get or set loading property.
collapse()	Minimize card widget.
uncollapse()	Expand card widget.
lock()	Lock card widget and show message.
unlock()	Unlock card widget and hide lock message.
is_locked()	Check if card widget is locked.

Mini App Example

You can find this example in our Github repository:

ui-widgets-demos/layouts and containers/001_card/src/main.py

Import libraries

import os
import random

import supervisely as sly
from dotenv import load_dotenv
from supervisely.app.widgets import Button, Card, Container, Image

Init API client

First, we load environment variables with credentials and init API for communicating with Supervisely Instance:

load_dotenv("local.env")
load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api()

Prepare widgets we will use in Card widget

Buttons to enable loading property, lock and collapse Card widget:

loading_btn = Button("Loading True")
lock_btn = Button("Lock")
collapse_btn = Button("Collapse")

Buttons to unlock, uncollapse and disable loading property of Card widget:

unlock_btn = Button("Unlock", button_type="success")
uncollapse_btn = Button("Uncollapse", button_type="success")
refresh_btn = Button("Loading False", button_type="success")

Use Container widget to join Button widgets in groups.

btn_container_1 = Container(widgets=[loading_btn, refresh_btn])
btn_container_2 = Container(widgets=[lock_btn, unlock_btn])
btn_container_3 = Container(widgets=[collapse_btn, uncollapse_btn])

containers = Container(
    widgets=[btn_container_1, btn_container_2, btn_container_3],
    direction="horizontal",
)

Prepare widgets to display some image.

preview_btn = Button("Preview")
image = Image()

Initialize Card widgets

Initialize one Card widget for buttons

buttons_card = Card(content=containers)

Initialize second Card widget for previewing images.

image_card = Card(
    title="Card",
    description="Card Description",
    content=image,
    collapsable=True,
    content_top_right=preview_btn,
)

Create app layout

Prepare a layout for app using Card widget with the content parameter.

layout = Container(
    widgets=[buttons_card, image_card],
    direction="horizontal",
    fractions=[1, 1],
)

Create app using layout

Create an app object with layout parameter.

app = sly.Application(layout=card)

Add functions to control widgets from python code

@unlock_btn.click
def lock_card():
    image_card.unlock()


@uncollapse_btn.click
def lock_card():
    image_card.uncollapse()


@refresh_btn.click
def lock_card():
    image_card.loading = False


@lock_btn.click
def lock_card():
    image_card.lock()


@collapse_btn.click
def lock_card():
    image_card.collapse()


@loading_btn.click
def lock_card():
    image_card.loading = True


@preview_btn.click
def load_preview_image():
    image_card.loading = True
    image.set(image_info.full_storage_url)
    image_card.loading = False