|
|
"""Image class.
|
|
|
|
|
|
Represents an image in the frontend using a widget.
|
|
|
"""
|
|
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
|
|
import base64
|
|
|
|
|
|
from .widget import DOMWidget, register
|
|
|
from IPython.utils.traitlets import Unicode, CUnicode, Bytes
|
|
|
from .deprecated import DeprecatedClass
|
|
|
|
|
|
@register('IPython.Image')
|
|
|
class Image(DOMWidget):
|
|
|
"""Displays an image as a widget.
|
|
|
|
|
|
The `value` of this widget accepts a byte string. The byte string is the raw
|
|
|
image data that you want the browser to display. You can explicitly define
|
|
|
the format of the byte string using the `format` trait (which defaults to
|
|
|
"png")."""
|
|
|
_view_name = Unicode('ImageView', sync=True)
|
|
|
|
|
|
# Define the custom state properties to sync with the front-end
|
|
|
format = Unicode('png', sync=True)
|
|
|
width = CUnicode(sync=True)
|
|
|
height = CUnicode(sync=True)
|
|
|
_b64value = Unicode(sync=True)
|
|
|
|
|
|
value = Bytes()
|
|
|
def _value_changed(self, name, old, new):
|
|
|
self._b64value = base64.b64encode(new)
|
|
|
|
|
|
|
|
|
# Remove in IPython 4.0
|
|
|
ImageWidget = DeprecatedClass(Image, 'ImageWidget')
|
|
|
|
