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* Images and html-export via data: ?
@ 2009-02-07 17:49 Renzo Been :-)
  2009-02-07 18:55 ` Sebastian Rose
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Renzo Been :-) @ 2009-02-07 17:49 UTC (permalink / raw)
  To: emacs-orgmode

Hi,

It's been a while since I posted anything on
this list. I've just been using org-mode
happily for quite a while now, and am quite
contend with the way it's working for me now...

I do have one idea that I think might be useful.

Images (and small files) can be included inside
html files in the following way.

src="data:..."

The image needs to be base64 encoded.

Would there be an easy way to create an
org-command to include an image into the org
file in this manner?

Off-course their is a disadvantage here: images
included like this could only be exported to
html (not LaTeX). And the images must be quite
small in size, or the exporter might
fail. Another problem is that not all browsers
can display images included in this way...

I'll be glad to here any comments about this idea.

Ciao,
Renzo

Below is an example of how I'm using this
feature now:

-----

#
* Picture
#+BEGIN_HTML
<p><img src="data:image/png;base64,
iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAACXRFWHRYLUluZGV4
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SUVORK5CYII="></p>
#+END_HTML

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Images and html-export via data: ?
  2009-02-07 17:49 Images and html-export via data: ? Renzo Been :-)
@ 2009-02-07 18:55 ` Sebastian Rose
  2009-02-07 19:44 ` Manish
  2009-02-08 13:22 ` Carsten Dominik
  2 siblings, 0 replies; 6+ messages in thread
From: Sebastian Rose @ 2009-02-07 18:55 UTC (permalink / raw)
  To: Renzo Been :-); +Cc: emacs-orgmode

Hi Renzo,


is that true? I can't believe it :-D

All those stupid JavaScript-preloader (for button rollovers) we all
write all the time. Just send both the images together with the html and
show/hide them onmouseover/out!

It's valid - and it works :-)


Haha - never seen this. Thank's for the hint!


Regards,

   sebastian


Renzo Been ":-)" <swangdoodles@gmail.com> writes:
> Hi,
>
> It's been a while since I posted anything on
> this list. I've just been using org-mode
> happily for quite a while now, and am quite
> contend with the way it's working for me now...
>
> I do have one idea that I think might be useful.
>
> Images (and small files) can be included inside
> html files in the following way.
>
> src="data:..."
>
> The image needs to be base64 encoded.
>
> Would there be an easy way to create an
> org-command to include an image into the org
> file in this manner?
>
> Off-course their is a disadvantage here: images
> included like this could only be exported to
> html (not LaTeX). And the images must be quite
> small in size, or the exporter might
> fail. Another problem is that not all browsers
> can display images included in this way...
>
> I'll be glad to here any comments about this idea.
>
> Ciao,
> Renzo
>
> Below is an example of how I'm using this
> feature now:
>
> -----
>
> #
> * Picture
> #+BEGIN_HTML
> <p><img src="data:image/png;base64,
> iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAACXRFWHRYLUluZGV4
> ADHDxKz0AAAG2klEQVRYhe2XWWyU5xWGn9lnPF5mPIvHC96wx5iw2YYBG1kkBAhL
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> #+END_HTML
>
>
>
> _______________________________________________
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> Remember: use `Reply All' to send replies to the list.
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>

-- 
Sebastian Rose, EMMA STIL - mediendesign, Niemeyerstr.6, 30449 Hannover
Tel.:  +49 (0)511 - 36 58 472
Fax:   +49 (0)1805 - 233633 - 11044
mobil: +49 (0)173 - 83 93 417
Email: s.rose@emma-stil.de, sebastian_rose@gmx.de
Http:  www.emma-stil.de

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Images and html-export via data: ?
  2009-02-07 17:49 Images and html-export via data: ? Renzo Been :-)
  2009-02-07 18:55 ` Sebastian Rose
@ 2009-02-07 19:44 ` Manish
  2009-02-07 20:31   ` Renzo Been :-)
  2009-02-08 13:22 ` Carsten Dominik
  2 siblings, 1 reply; 6+ messages in thread
From: Manish @ 2009-02-07 19:44 UTC (permalink / raw)
  To: Renzo Been :-); +Cc: emacs-orgmode

On Sat, Feb 7, 2009 at 11:19 PM, Renzo Been :-) wrote:
[...]
> Images (and small files) can be included inside
> html files in the following way.
>
> src="data:..."
>
> The image needs to be base64 encoded.

Very interesting.

>
[...]
> Another problem is that not all browsers
> can display images included in this way...

IE couldn't but FF did.

>
>
> I'll be glad to here any comments about this idea.

The encoded image size is about 2.5K while the rendered image turned out to be
about 1.8K.  But.. cute image! :)

Cheers
-- 
Manish

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Images and html-export via data: ?
  2009-02-07 19:44 ` Manish
@ 2009-02-07 20:31   ` Renzo Been :-)
  0 siblings, 0 replies; 6+ messages in thread
From: Renzo Been :-) @ 2009-02-07 20:31 UTC (permalink / raw)
  To: emacs-orgmode

To follow up on the topic:

I also experienced that IE did not show the images. Firefox does show them.
That's actually how I found out about this trick. Firefox is using the

src="data:..."

inside it's bookmark file...

Abiword also uses it in it's html export.

And email messages that include images, also include them in a similar way.

I have been using

src="data:..."

inside the following html tags

<a href...> (include .zip or .html files)
<img ...> (all images)
<iframe ...> (include .zip .txt or .html files)

and also to include javascript (as base64) into the html code:
<script type="text/javascript" src="data:..."></script>

Ciao,
Renzo

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Images and html-export via data: ?
  2009-02-07 17:49 Images and html-export via data: ? Renzo Been :-)
  2009-02-07 18:55 ` Sebastian Rose
  2009-02-07 19:44 ` Manish
@ 2009-02-08 13:22 ` Carsten Dominik
  2009-02-08 14:34   ` Renzo Been :-)
  2 siblings, 1 reply; 6+ messages in thread
From: Carsten Dominik @ 2009-02-08 13:22 UTC (permalink / raw)
  To: swangdoodles; +Cc: emacs-orgmode

Seems to me that this could be a nice add-on package, which would  
encode and insert such images.

- Carsten

On Feb 7, 2009, at 6:49 PM, Renzo Been :-) <swangdoodles@gmail.com> <swangdoodles@gmail.com 
 > wrote:

> Hi,
>
> It's been a while since I posted anything on
> this list. I've just been using org-mode
> happily for quite a while now, and am quite
> contend with the way it's working for me now...
>
> I do have one idea that I think might be useful.
>
> Images (and small files) can be included inside
> html files in the following way.
>
> src="data:..."
>
> The image needs to be base64 encoded.
>
> Would there be an easy way to create an
> org-command to include an image into the org
> file in this manner?
>
> Off-course their is a disadvantage here: images
> included like this could only be exported to
> html (not LaTeX). And the images must be quite
> small in size, or the exporter might
> fail. Another problem is that not all browsers
> can display images included in this way...
>
> I'll be glad to here any comments about this idea.
>
> Ciao,
> Renzo
>
> Below is an example of how I'm using this
> feature now:
>
> -----
>
> #
> * Picture
> #+BEGIN_HTML
> <p><img src="data:image/png;base64,
> iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAACXRFWHRYLUluZGV4
> ADHDxKz0AAAG2klEQVRYhe2XWWyU5xWGn9lnPF5mPIvHC96wx5iw2YYBG1kkBAhL
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> ENdHHCQkkGvQ4xobI0drwWaro7KyhEh4Kl36mTtw9K0jIsD25/4guXDlCtFIHDGR
> orC4iOo5VlRqBT3DDtAZUeRko9NpkcpiLLbNZWpqbMY1DPBfocXkQcBavxQAAAAA
> SUVORK5CYII="></p>
> #+END_HTML
>
>
>
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^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Images and html-export via data: ?
  2009-02-08 13:22 ` Carsten Dominik
@ 2009-02-08 14:34   ` Renzo Been :-)
  0 siblings, 0 replies; 6+ messages in thread
From: Renzo Been :-) @ 2009-02-08 14:34 UTC (permalink / raw)
  To: emacs-orgmode

Carsten Dominik <dominik <at> science.uva.nl> writes:

> 
> Seems to me that this could be a nice add-on package, which would  
> encode and insert such images.
> 
> - Carsten

Yes, making it an add-on package would be the best way. Then everyone can chose
to use these image commands or not...

If there is someone on the list who could create such a package... That would be
great!

Or I could try and write it myself. But I must admit that my knowledge of
writing elisp code is pretty limited...

One way to do this would be a mechanism equal to "Include files".

So:

#+INCLUDE: "~/.emacs" src emacs-lisp

(from the org manual)

Would turn into:

#+INCLUDEPIC: "~/foo.jpg" jpg

The extra parameter would be needed to determine the file-type of the image. And
possibly there could be more extra parameters for things like: image alinement,
and including a caption. 

And during html export the above would then turn into:

<p><img src="data:image/jpg;base64,
base 64 encoded text of ~/foo.jpg
"></p>

To me this seems a nice way to implement this command. But I really would not
know how to start writing this up into an add-on package...

Ciao,
Renzo

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2009-02-08 14:34 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-02-07 17:49 Images and html-export via data: ? Renzo Been :-)
2009-02-07 18:55 ` Sebastian Rose
2009-02-07 19:44 ` Manish
2009-02-07 20:31   ` Renzo Been :-)
2009-02-08 13:22 ` Carsten Dominik
2009-02-08 14:34   ` Renzo Been :-)

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