On 12/20/2011 05:20 AM, Panks wrote:
On Mon, Dec 19, 2011 at 11:05 AM, Sebastian Sauer <m...@dipe.org <mailto:m...@dipe.org>> wrote:On 12/18/2011 09:33 PM, Panks wrote:Hello everyone, This is Pankaj, I am a second year CS student at Indian Institute of Technology, Madras. I am interested in contributing to Calligra. While going through last year (2011) gsoc idea page I found these ideas interesting: Project: PDF-Import and/or PDF-Export AND Integrate with Akonadi for Calligra Words and Project: PSD File import/export Support for Calligra Krita I would like to work upon one or more(depends on time) of these ideas. But since I am new to KDE, I would like someone to mentor/help me along with the project. So, can someone please help me along with? Credentials: I have knowledge of C++ and Qt.and hello Pankaj, I would be willing to mentor you on getting a PDF-Import filter for Calligra Words done. I am available in our irc-channel #calligra (on irc://irc.freenode.net/calligra - use e.g. the "Konversation" application to connect to IRC) as "sebsauer". First steps would be; 1. Build Calligra yourself from the sources. See http://community.kde.org/Calligra/Building 2. Get a KDE git-account to commit work you do. See http://techbase.kde.org/Contribute/Get_a_Contributor_Account 3. Get familar with the area where the work will happen. That is the filter-framework. We are going to write a filter-plugin that reads PDF-files using the poppler library and then generating OpenDocument ODF. The filter-framework will take care of all the things around including passing the resulting ODT-file on to Calligra Words so it's loaded+displayed and the user can edit+save. For point 3 you may like to have a look at; * in our sources at the Text-file importer located at calligra/filters/words/ascii/AsciiImport.cpp to have an idea how a filter looks like. * at the poppler-library. For that install libpoppler (if not already installed cause it's a pretty standard-library used by applications like Okular to display PDF-files). There look at the header-files to have an idea how the API looks like. Once those initial steps are done we would create an initial filter skeleton for the PDF-import filter. We could basically copy the AsciiFilter linked above over and 1) change the CMakeLists.txt to link against libpoppler and 2) change the desktop file so we take PDF-files as input and not text-files like the text-filter does and 3) start to use the libpoppler-API to evaluate the PDF-document. So much for the start :-) / / First of all thanks a lot for mentoring this project. :-)I am done with step 1 & 2 and in step 3 I am going through the code of AsciiImport.cpp and simultaneous giving a look to some implementations of poppler.
Very great. Lot of thanks for sharing your progress. For poppler you may like to have a look at http://people.freedesktop.org/~aacid/docs/qt4/ and for implementations using it http://mail.kde.org/pipermail/okular-devel/2011-May/009429.html ( http://quickgit.kde.org/index.php?p=okular.git&a=summary ).
For the initial skeleton what means the very first code to start a PDF-importer with I could provide some helping hands to get it done. We could start with creating a branch in our git and add a calligra/filters/words/pdfimport directory and then copy over the Ascii-filter + rename + adapt the CMakeLists.txt + link against libpoppler and create the first lines of code that use libpoppler to have a look first code that extracts content from a PDF and writes it into a ODT. You can ping me at IRC or write a mail to get started on this :-)
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