Web presentation of Open Office slides: Difference between revisions

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imported>Hendrik Brummermann
started to write down requirements of OOo HTML export
imported>Hendrik Brummermann
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== Technology Requirements ==
== Technology Requirements ==


* Viewing talks with slides directly on the web
* R1: Viewing talks with slides directly on the web
* Not requiring visitors to have Open Office installed
* R2: Not requiring visitors to have Open Office installed
* Not requiring people to download the presentation
* R3: Not requiring people to download the presentation
* barrier-free, (e. g. text view of slide-images, transcript of audio)
* R4: barrier-free, (e. g. text view of slide-images, display transcript of audio)
* Support for all common browsers, including older browsers that are still in use
* R5: Support for all common browsers, including older browsers that are still in common use
* Support computers without audio
* R6: Support audio
* R7: Audio is optional
* Support for small display screens (e. g. tablets, mobile phones)
* R8: Support for small display screens (e. g. tablets, mobile phones)
* Should work without flash plugin and without JavaScript but may use these technologies if available
* R9: Should work without flash plugin and without JavaScript but may use these technologies if available


== What is wrong with the standard html export in Open Office Impress ? ==

* ok R1
* ok R2
* ok R3
* fail R4: Requires Frame-Support in Browser. There is a html view that would work without frames, but it's not reachable from the start page.
* unknown R5
* fail R6: For audio an embed-tag is created which only works if the files are saved to disk but not in the world wide web
* ok R7
* fail R8: bulky frameset, slide images is not resized but gets scroll bars
* fail R9: requires JavaScript for navigation


<gallery>
File:Lynx-ooo-impress-export.png|"Your browser does not support frames."
File:Small-screen-ooo-impress.png|On a small screen, the slide image is not zoomed out, but scroll bars appear
File:Javascript-ooo-impress.png|JavaScript is used for navigation without alternative
</gallery>


== Approach ==

* Use OpenOffice HTML-Export as base
** with frames
** with notes (if there are notes)
** browser colors
** black arrow icons without borders

* Converting ogg-files to mp3 for Microsoft Internet Explorer
** http://code.google.com/p/ogg2mp3/
** ogginfo returns 1 on my recorded files which causes ogg2mpd to abort.

<source lang="diff">
--- /usr/bin/ogg2mp3 2010-09-28 21:07:25.000000000 +0200
+++ ogg2mp3 2011-09-27 22:17:55.474323127 +0200
@@ -147,7 +147,7 @@
# read ogginfo output
OGGINFO=$( LANG=C ogginfo "$1" )
- test "$?" != "0" && fail "ogginfo failed!" "$OGGINFO"
+ #test "$?" != "0" && fail "ogginfo failed!" "$OGGINFO"
# determine nominal bitrate of source file
BITRATE=$( echo "$OGGINFO" | grep "Nominal bitrate:" | cut -d' ' -f3 )
</source>

Latest revision as of 07:03, 29 September 2011

Motivation

TODO: Describe why viewing talks directly in the browser is desirable

Technology Requirements

  • R1: Viewing talks with slides directly on the web
  • R2: Not requiring visitors to have Open Office installed
  • R3: Not requiring people to download the presentation
  • R4: barrier-free, (e. g. text view of slide-images, display transcript of audio)
  • R5: Support for all common browsers, including older browsers that are still in common use
  • R6: Support audio
  • R7: Audio is optional
  • R8: Support for small display screens (e. g. tablets, mobile phones)
  • R9: Should work without flash plugin and without JavaScript but may use these technologies if available


What is wrong with the standard html export in Open Office Impress ?

  • ok R1
  • ok R2
  • ok R3
  • fail R4: Requires Frame-Support in Browser. There is a html view that would work without frames, but it's not reachable from the start page.
  • unknown R5
  • fail R6: For audio an embed-tag is created which only works if the files are saved to disk but not in the world wide web
  • ok R7
  • fail R8: bulky frameset, slide images is not resized but gets scroll bars
  • fail R9: requires JavaScript for navigation


  • "Your browser does not support frames."
    "Your browser does not support frames."
  • On a small screen, the slide image is not zoomed out, but scroll bars appear
    On a small screen, the slide image is not zoomed out, but scroll bars appear
  • JavaScript is used for navigation without alternative
    JavaScript is used for navigation without alternative


Approach

  • Use OpenOffice HTML-Export as base
    • with frames
    • with notes (if there are notes)
    • browser colors
    • black arrow icons without borders

<source lang="diff"> --- /usr/bin/ogg2mp3 2010-09-28 21:07:25.000000000 +0200 +++ ogg2mp3 2011-09-27 22:17:55.474323127 +0200 @@ -147,7 +147,7 @@ 

   # read ogginfo output
   OGGINFO=$( LANG=C ogginfo "$1" )

- test "$?" != "0" && fail "ogginfo failed!" "$OGGINFO" + #test "$?" != "0" && fail "ogginfo failed!" "$OGGINFO" 

   # determine nominal bitrate of source file
   BITRATE=$( echo "$OGGINFO" | grep "Nominal bitrate:" | cut -d' ' -f3 )

</source>

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