Re: Export ascii-images using ditaa when targeting HTML?

[Sebastian Rose <sebastian_rose@gmx.de>]

Hi Eric,


this is - hey - WOWEEEEEE, GREAT!


But I ran into to problems:

* Background color

  The background of the resulting images is black, and I don't know how
  to change that. Black lines on black background... I tried with
  leading colons and without.

  ditaa has no option to adjust the background color, but if I use ditaa
  from the commandline, the background color is white.


* Existing images

  If the image already exists in the target directory of the export, org
  refuses to overwrite it. Is there an option somewhere I should adjust?
  I don't think it's a general problem in org-export, since I never
  ecnountered this error.




Thanks for org-exp-blocks.el!!


Best,

   Sebastian



"Eric Schulte" <schulte.eric@gmail.com> writes:

> Hi Mac,
>
> That's an interesting utility.
>
> I have been working on an org-mode add-on for the specialized processing
> of #+begin_* blocks.  Since this is very similar to the need you
> expressed below, I implemented ditaa processing as one of the examples
> in the initial implementation of this add-on.
>
> If you want to grab the org-exp-block.el file from
>
> http://github.com/eschulte/org-contrib/tree/master/org-exp-blocks.el
>
> you can use it to export ditaa blocks to images when exporting an org
> file to html.  There are instruction in the top of the elisp file,
> mainly you just need to load the file, and set `ditaa-jar-path' to the
> path to ditaa.jar on your system.  Then if you setup a block like the
> following
>
> #+begin_ditaa blue.png -r -S
> +---------+
> | cBLU    |
> |         |
> |    +----+
> |    |cPNK|
> |    |    |
> +----+----+
> #+end_ditaa
>
> The ascii inside the block will be exported to an image in blue.png
> passing any following options as command line options to ditaa.jar.
>
> Hope this is helpful.
>
> Cheers -- Eric
>
> Mac <xmfrw8002@sneakemail.com> writes:
>
>> I would like to convert my ASCII-images inside my document.org before exporting
>> the document to HTML.
>>
>> I've found this converter, ditaa, which is a java program that takes an ASCII
>> text file and creates a png file (http://ditaa.sourceforge.net/).
>>
>> I intend to find my ASCII figure, save it as a separate text file, and run ditaa
>> on it. In my document.org I'll comment the ASCII-art so it won't be exported and
>> add a link so the image will be included in the html file.
>>
>> [[file:figure_1.png]]
>> #+BEGIN_COMMENT
>>                  V,mA
>>                   |
>>                +-----+
>>                |40140|
>>                +-----+
>>                   |
>>                   |    +----+
>>               +--------|4561|----------> PC  
>>               |        +----+  
>>            +----+
>>            |4060|
>>            +----+
>>               |
>>            Relay Out
>> #+END_COMMENT
>>
>> Before reinventing the wheel, anyone done anything similar, or have ideas?
>>
>>
>>
>>
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