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

Reverse hscrollbar min-height hack on OS X...

Reverse hscrollbar min-height hack on OS X OS X has optional behavior to only draw scrollbars during scroll, which causes problems for CodeMirror's scrollbars. CodeMirror's solution is to set a minimum size for their scrollbars, which is always present. The trade is that the container overlays most of the last line, swallowing click events when there is scrolling to do, even when no scrollbar is visible. This reverses the trade, recovering the click events at the expense of never showing the horizontal scrollbar on OS X when this option is enabled.

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')