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Talk of Olivier Girardot (École Centrale de Nantes, Alumni 2009) and Eric Bachard (lead of the OpenOffice.org Education Project) at the Libre Software Meeting 2009 (http://2009.rmll.info/)During academical year 2008-09, a group of students from Centrale Nantes worked on the integration of annotation features in the slideshow module of OpenOffice.org. Two of them (Olivier Girardot and Frédéric Gélot) have become official OOo developers and interact with the other members of OOo team (like Thorsten Behrens). This talk synthesizes their work and their collaboration with the OOo Education project, that Eric Bachard presents in more details. More information on https://pedagogie.ec-nantes.fr/tablet-pc/ and http://blog.educoo.org/dotclear/
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Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
École Centrale Nantes&
OpenOffice.orgEducation Project
featuring:
« The Eraser »« The Eraser »
2Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
The project● OOo and the Education Project● Our project itself● How it works ?● The results of the project● The future for OOo● Conclusion
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
OOo and Educoo ...
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
The OpenOffice.org Project, is ...A Community Project, Itself organized in (a lot of) projects
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Types of ProjectsThere are 3 project types in OpenOffice.org organization
● Accepted : code development (API, modules), Marketing, QA,...
● Incubator : new experimental projects: Education, Extensions
● Native lang : native lang communities
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Role of the « Incubators » projects
● Experiment● Validate a new need● Innovate and make the OpenOffice.org Project
progress
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Education Project is
an incubator andINTERNATIONALproject type
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
The goals of the Education Project ?
This is a young project,Belonging to OpenOffice.orgwith the main goal tocreate a bridgebetween Educational World and OpenOffice.org
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
' Who ' is the Education Project ?
Approximatively 100 members,Students, developers (mostly)From all countriesAll participate to OpenOffice.org
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
The 3 main objectives of the Education Project :
● Create a network of teachers using OpenOffice.org
● Provide a space for exchanging pedagogical contents, under free file formats
● Teach, provide young (core-)developers to write code for OpenOffice.org
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Back to the 3rd Objective : provide new developers
Idea :
Associate : theory (The teachers)The know how (professional developers)The actors (students, profs, and so on)Mentors (OpenOffice.org Project developers)The needs (features for OpenOffice.org)
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Already started actions
● Online Courses « ClassRooms »● Projects with engineers schools students, and shools contributions
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
ClassRooms
Online Courses ( IRC )
See:
http://wiki.services.openoffice.org/wiki/Education_Project/ClassRoom
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Education Project Effort
● Mentored projects with active participation of the schools
http://wiki.services.openoffice.org/wiki/Education_Project/Effort
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Schools who joined the project
Epitech/Epita (Paris, France)École Centrale Nantes (Nantes, FranceUTBM (Sévenans, France) Seneca College (Toronto Canada)
…
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
ExamplesMozilla 1.7.5 → Seamonkey 1.1.14 migration (Pierre Pasteau / Epitech Paris ) QA in progress, will be integrated
Developers who contributed : Frank Schönheit (Sun MicroSystems), Eric Bachard (unaffiliated)
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
ExamplesAude Quintana, Olivier Girardot (École Centrale Nantes): implementation of the eraser features, with Tablet PC and Impress. Code review in progress.
Developers who contributed : Thorsten Behrens (Novell)Managed by Morgan Magnin, for Ecole Centrale Nantes
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
ExamplesFrédéric Gelot, Pierre-Jean Parot (École Centrale Nantes): annotations implementation with Tablet PC and Impress
Developers who contributed : Thorsten Behrens (Novell)
Managed by Morgan Magnin, for ECN
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Other example : Seneca College, TorontoProfessor : Fardad Soleimanloo(4 projects started, expected for Summer 09)
All other proposed subjects :
http://wiki.services.openoffice.org/wiki/Education_Project/Effort
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Scheduled Project: july to december 2009
Thomas Fontenay, Abdelkader Bellabes ( Epitech Paris ) : performance improvement of OOo4Kids on powerless machines (include backport to OpenOffice.org for the most interesting solutions), profiling, User Interface Improvement
Developers : Pierre Pasteau, Eric BachardManaged by Julien Ballet for Epitech Paris
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
(partial) Conclusions The creation of reliable relations with engineers schools from everywhere works well (promising !)
This project only needs help .. We miss - developpers - sponsors - … mainly money in fact (founding travel, hardware)
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
back to the feature ...
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Tablet Pc and Centrale● The ECN was selected to take part into the
HP contest : Technology For Teaching● We chose to set up an OpenSource platform
(Linux/Ubuntu) on these computers and improve the way it worked
Improve how someone can annotate slides in OOo Impress during a slideshow
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
2 projects in one :● « The Eraser » :
– To erase these annotations.● « The Saving Machine » :
– To save them and restore them.
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Objectives and Specifications● Be able to completely erase screen
annotations;● Erase some parts manually at the following
sizes:– Little– Medium– Big
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
OpenOffice.org● C++ core;● 8.36 Go of data once everything compiled ;● 9,000,000 lines code ;● Has it's own system of :
– extensions : UNO (Universal Network Object) : to be able to contribute in Java/Python...
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
How things work
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Implementation and Concept
● First part : Persistence and Full Erasing
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Erasing Implementation● Erase, means :
– For one pixel, redraw it at its original color before the annotation;
– For a slide, redraw it entirely;● Problem :
– Erasing requires to have a copy of the original image before to proceed the modification;
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Where is the bitmap ?
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Implementation and Concept
● Second part : Partial deleting
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Notion of Clipping● Allows to define the part of the bitmap
to be redrawn, means :– Partial erasing ;– Optimisation ;– Eraser size management;
● Add parameters to the User Interface for modifying the eraser size.
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
The bug with transformation
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Resolution
● With Thorsten Behrens's help, regarding the right coordinates transformation to perform
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Manage conflicts between projects
● The Saving Machine aims to assume annotation persistence ...
● … while The Eraser has the objective of erasing annotations;
Means : conflicts to solve
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Maintainability guaranteed● CWS creation (Child WorkSpace)● Strong collaboration, code review and
validation by Eric Bachard and Thorsten Behrens
● Follow-up of the OOo specification process
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Possible Optimisations
● Draw the polygons in a separate layer ;
● Improve the interaction between storage and erasing ;
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Conclusion● Collaboration with a big scaled FOSS
Project – Understanding of the existing code ;– Insertion in the community ;– Precise specifications writing ;– Real answer to a real demand;
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Conclusion
● Perspectives :– Upstream integration in a future
release– Possible improvements ;– Communication about the project ;
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Thanks !
Questions ?
Aude Quintana, Olivier Girardot & Eric Bachard Libre Software Meeting Nantes 9th July 2009
Auteurs : Olivier Girardot ([email protected]), Eric Bachard ([email protected]) www.educoo.org 2009
Document sous licence libre http://creativecommons.org/licenses/by-sa/3.0/deed.fr