GSoC 2012 Multithreading ajreddy

GSoC 2012 Project : Rendering and Multithreading

Email: annapareddyjanardhanreddy@gmail.com

Short description:

Scribus is a great DTP application which is used to print many magazines and books. And a lot of these books contain many images. But loading of books/document for the first time takes much time. Reloading time of documents takes reasonable time (It gets the images from the cache). Moreover toggle from display to other modes is also slow. The idea of this project is to prepare preview images using multithreading. The idea is to fill the cache by worker threads and let the render thread use a dummy or previous version of the image.

Success Stories: http://wiki.scribus.net/canvas/Category:Success_Stories

Contingency :

This project might be completed before gsoc. Then i will start implementing the following features using multithreading

1) DocumentChecker (specialy for checking for issues in text frames)

2) output/printing

3) image effects

All these remaining things i will try to complete after gsoc one by one.

After GSOC :

I am highly motivated and interested in working for Scribus even after GSoC. I will continue working with the Scribus team, fixing bugs, and also on some of the specific projects i am interested in.

Speeding up Scribus

   Using Multithreading. http://wiki.scribus.net/canvas/Multitherad_%28Project%29
   I would like to use Qtconcurrent for the multithreading.
   relayouting whole document after doc->invalidateAll
   relayouting visible area in low zoom level (multiple pages visible)
   search&replace for whole document & updating markers  

Biography :

I am Janardhan Reddy, second year Undergraduate Student in Computer Science from Vijayawada, India.

I study at Indian Institute of Technology Madras, one of the most prestigious institutions in the Engineering field in India.

I have a sound knowledge and experience in C++ ,kde and Qt. I have submitted 8-10 patches in dolphin in kde and got them committed.

I have already ported kipi plugins in kde to use threadweaver (kde counterpart of QtConcurrent) for parallel processing. I have also implemented a base class through which kipi plugins can take advantage of multi core cpu's. (All one needs to do is to subclass this class)

I have also contributed for Yakuake

Contact Information :

Student : Janardhan Reddy A

Email ID : annapareddyjanardhanreddy@gmail.com

Freenode irc nick : Janardhan

Location : Vijayawada, India ( UTC + 530 )