upstream/ipython Files · IPython/html/widgets/widget_image.py

This feature was discussed in , but it doesn't look like anything was ever incorporated into the IPython Notebook....

This feature was discussed in , but it doesn't look like anything was ever incorporated into the IPython Notebook. Here's a brief overview of the changes: - Display of messages from other clients can be toggled on and off from within a notebook, either using the ``<M-m>e`` keyboard shortcut in the web UI, or through the option in the "Kernel" menu. - notebook.js controls whether messages are displayed through a callback that is invoked from kernel.js when no callbacks are available for a message. - The UI displays ``execute_input`` messages originating from an other clients in new cells at the end of the notebook. Output messages (``execute_result`` et al.) will only be displayed if a cell exists with a matching message ID. Pending design questions: - Should each ``execute_input`` message cause a new cell to be created? - Should new cells be placed at the end of the notebook, or elsewhere? If the latter, what criteria should be followed?

Sylvain Corlay - - Load All Authors

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             widget_image.py
        
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      """Image class.  

      Represents an image in the frontend using a widget.

      """

      #-----------------------------------------------------------------------------

      # Copyright (c) 2013, the IPython Development Team.

      #

      # Distributed under the terms of the Modified BSD License.

      #

      # The full license is in the file COPYING.txt, distributed with this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      import base64

      from .widget import DOMWidget, register

      from IPython.utils.traitlets import Unicode, CUnicode, Bytes

      from IPython.utils.warn import DeprecatedClass

      #-----------------------------------------------------------------------------

      # Classes

      #-----------------------------------------------------------------------------

      @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')

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				"""Image class.

				Represents an image in the frontend using a widget.
				"""
				#-----------------------------------------------------------------------------
				# Copyright (c) 2013, the IPython Development Team.
				#
				# Distributed under the terms of the Modified BSD License.
				#
				# The full license is in the file COPYING.txt, distributed with this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------
				import base64

				from .widget import DOMWidget, register
				from IPython.utils.traitlets import Unicode, CUnicode, Bytes
				from IPython.utils.warn import DeprecatedClass

				#-----------------------------------------------------------------------------
				# Classes
				#-----------------------------------------------------------------------------
				@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')