[IPython-dev] Image Widget Persisted with Export to HTML?

[Jonathan Frederic]

Hi Pierre,

Unfortunately such a thing doesn't exist right now.  I'm taking note of
your use case, for the output area work that Kyle and I will be doing, and
the static widget work I plan on doing later.

Sorry,
Jon

On Fri, Jul 10, 2015 at 6:16 PM, Pierre Villeneuve <
pierre.villeneuve at gmail.com> wrote:

> Hello all,
>
> First, here is the context of my question to the group: I'm currently
> developing an image widget based on the HTML Canvas element, versus the
> IPython built-in widget based on the Image element.  For simple cases the
> differences seen by a user may not be noticeable, but in my case I
> specifically wish to propagate the canvas' JavaScript mouse events to
> Python callback functions. Another difference is my widget can be
> initialized directly from a Numpy array.
>
> My question applies to my canvas image widget as well as the built-in
> image widget.  When I export my notebook to HTML the widget's displayed
> image is not present.  This is the opposite behaviour from an image
> displayed using IPython.display.Image().  I know that widgets are
> displayed to the frontend in an area separate from the cell's standard
> output area, and that persisting widget's is in itself a huge topic.  I
> simply want a pretty picture to survive the export to HTML.
>
> I'm curious to know if a near-term solution is possible whereby I might
> temporarily replace each of my displayed widget's images with an instance
> of IPython.display.Image().  I can mentally visualize a path to a
> solution if only there was a place where I could define a callback function
> to be called just prior to HTML export.  Does sch a thing exist?
>
> Pierre
>
> *Pierre Villeneuve*
> pierre.villeneuve at gmail.com
>
>
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>
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