Inkface update

So as promised, here is an update on Inkface. I am ready with v0.1.2, almost.

A main change in this update is, the definition of a new abstraction called ‘Face’. This was introduced to make programming the app more intuitive. A ‘Face’ object is initialized by giving it a name of SVG file that holds UI elements. One can create several face objects that hold elements from different SVG files, and as per the program logic can add-remove these ‘face’ objects from the canvas. The elements in the SVG files can be addressed as attributes of the face objects in which they are loaded. This makes the app source code very intuitive. The management of the element objects is done behind the scene without the app programmer having to worry about it.

To demonstrate these features, I have written a simple yet useful app using above concepts. It’s a twitter client, written using python-twitter library as backend and inkface-python as front end. This app depicts friends’ and public’s twits in a more playful manner as clouds and banners, rather than rectangular gtk widgets. It enables text-entry by a face object called ‘Keyboard’ which implements the logic of text entry (from touch screen interface as well as actual keyboard of n810). I want to polish the app further before making a demo video, so I am not going to rush it today.

The inkface infrastructure is now divided into three libraries: the SVG parser and renderer library - libaltsvg (derivative of librsvg); the python bindings for inkface - inkface-python; a helper python library which defines above mentioned abstractions - inklib. There are deb packages for each of these components. A good news is, I have got permission to upload these packages to maemo extra repo; so users now won’t have to worry about dependencies.

Soon I will have to seriously concentrate on the performance issues. As you will observe while running the twitter client, the app takes nearly 50% of n810’s total 128M memory. So it surely is not healthy. The python ref count debugging made sure that the memory was no longer leaked in buckets; but a vector graphics based app is known to need more resources. I plan to look deep into librsvg and cairo data structures to trim down the memory usage.

Meanwhile, this update also has some code for OpenGL backend, however it’s disabled by default. It is targeted for desktop and OpenGL ES based handhelds.

Tommorrow I am leaving for a vacation, so after I return next week, I will do some final testing and release the deb packages.

That’s all for now.

Merry Christmas to all!!!


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2017

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Why Electron is the best development platform?

Project Dialog

2016

Don't Panic

The Entanglement Pattern

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Having done attitude

2015

Before fixing performance issues

No Exams, Yes Video games

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2014

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Conned?!

2013

Uruguay's President

New rules for Formula 1

Software Engineering Code of Ethics and Professional Practice

Something's missing

2012

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Water from air

The single most reason that keeps me using Vim

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When your git branch diverges from your remote

Something like Olivia - John Mayer

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Kelsey Grammer is spectacular

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Prometheus

Rolling back latest git commit

Google Lunar X Prize

iTunes Download stopped (err =9006)

Good essay on user centric software design

Why we need to explore Seasteading?

2011

Master pieces from screen

How to write interactive CLI utility in node.js

The Gods Themselves by Isaac Asimov

Why OpenGL ES is so hard?

How to print stack trace anywhere in Javascript

It's not fair to compare Android with Internet Explorer

How to debug WebWorker threads?

Why can't I criticize Government if I don't vote? I sure can.

Elon Musk quote

Don't label yourself

Why the hi-tech minds are writing Social apps?

Truce with exercise

JavaScript is the next C

Ever growing todo list is a good sign for creative projects

Lesser women in tech... So what?

HTML5 offline cache - use swapCache carefully

How Wikipedia and Flattr can together change the World

2010

Discovering LastPass

Functional programming in Javascipt using Underscore.js

Youtube ETA - Chrome extension

Why secure airports when it's planes that fly?

Mac book red light audio jack problem on Linux

How to save HTML5 canvas image to Google App Engine

Why don't they publish eBooks for free but with embedded ads?

Silicon Valley and Hi-tech

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Music sharing

ReaderScope 2.0.6 - Find Comments

ReaderScope 2.0

predictably irrational

ReaderScope upcoming changes

Tuxmac

Why "Open" is not the first concern of user?

Mutt, Gmail, gdata, notify-send: A Perfect Email solution

Are you the Matt Damon of your game?

ReaderScope 1.9 - OAuth

New app "Find Comments"

@font-face-lift

ReaderScope 1.8.{2,3} - new authentication and global share

Portable apps for iPhone, Android, Pre, n900 - Can Processing.js help?

ReaderScope 1.8.1 - rethinking features

ReaderScope 1.8 - Random

Android fragmentation : How big a deal is it?

on Dropbox

iLikeIt

ReaderScope v1.7 - Widget, new Icons and .... Ads

on Git: tips for SVN users and Git in Dropbox cloud

How to do an online IDE for Android app development

Anti Asserts

Bono's top ten list

Make Android speak your Twits with "TwitSpeak"

2009

Reality of colors

Talking Twitter client

ReaderScope 1.5 - quicker, better, prettier

Preview android.R.drawable.* images

Is definition of "Evil" changing?

on Music: Battle Studies

ReaderScope 1.4 (with a Theme Pack)

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Black on White

Android AsyncTask template

The AND-OR problem of laptop and mobile phone

ReaderScope v1.3.3 - offline podcasts

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ReaderScope v1.3 - Beyond Google Reader

Frets on Fire for Maemo - Update

ReaderScope 1.2.7 - Podcasts, Expanded View

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ReaderScope v1.2

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ReaderScope beta4 - offline fun

ReaderScope beta3 - Tweet the news

ReaderScope Beta2

ReaderScope beta1 is out

Intercepting Up/Down keys from bash script

Makeshift XML beautifier in python

HTC Magic (Indian version) - expectations and facts

using android AsyncTask

Android development with Vim + Eclim

Cutewit (preview)

Einstein's Dreams

Preprocessing the GUI

Evas + Inkface in v0.2.5

easy source

FoF - PyOpenGL = miniFoF (possibly for n810)

FoF update

Twitter client with inkface-pygame v0.2.2

Frets on Fire on Maemo 5 (Fremantle)

Static IP configuration on Fedora 10

Inkface+pygame v0.2.0

Smooth scrolling with Inkface+pygame

Inkface v0.2 update and automated GUI testing

Testing Android (Koolu Beta 3) on Openmoko Freerunner

Clutter animation paths with Inkscape+Inkface (v0.1.3)

Turning a page

Planning Inkface v0.2

Debian repository on Google App Engine

Inkface + Clutter

Inkface v0.1.2, Twitter-inkface client

2008

Inkface update

Debugging python reference counts

Paul Graham nails it again!

Fedora 10 on MacBook 2,1

A great essay

Thanksgiving at Crater Lake

Digital SLR buyer's guide

more fun with notify-send

(k)ubuntu 8.10 - not ready for my home yet

Migrating to Google App Engine

Android opened - first looks inside

Has it started?

Inkface v0.1

Musical discovery of the week

Die Berlin-Affäre

aus Berlin

Inkface - SVG based GUI design

Script fun

Visualizing source code

OpenMoko photo tour

New connection with the past

George Carlin - favorite clip

temperature

80-20 rule

Python fun

OSiM'08 Berlin, Germany

Of games

"Wine" tasting

Today's slashdot and open source

Cost of Open Source

Lions for Lambs

Ubuntu reviewed

Flickr uploads from n810

Cringely and Paul Graham

Accelerometer brainstorming

Clutter Webkit

OSiM USA 2008 - Day 2

OSiM USA 2008 - Day 1

Google code

Gr8 commercial

OSiM USA 2008, see you there

OpenMoko, Android and a great hacking post

two great videos

Blog from nokia tablets

2007

cool n770 hack

Picasso

Colbie Caillat

Firefox 3 is brilliant!!!

XML RPC server inside apache mod_python

best effort technologies

coding Monalisa

formula of a horror movie

next desktop jump

The "Screen"

Nice review article on virtualization technologies

Once again... a quote from 'Troy'

Story of a random number

quotes from George Carlin

"from time import sleep"

Sea surfing under the Golden Gate

Trip videos

2006

across two hours

What I read...

How do I backup to Amazon S3 storage service

Stranger than fiction

Gas prices... seems like big scam

Another nice quote

Hilarious nerd comment

Programming & Painting

Why do we like fiction?

Troy

If Harry Potter were a computer hacker ...

Gentoo, XGL, HGG

Henry Ford

VI - A capable IDE

New blog

Safari Bookshelf

2005

Back to the L4

Quotes

GCC 2.95 rpms

repeat (ps | grep) = filtered top

Halo fixed on ATI Mobility Radeon 9000

DirectX Installation Problem

Warning: const is a keyword in ANSI C

Not much on L4 front

Last two weeks

GRUBing

Stumbled on HURD

Installed HURD console

Make problem solved

2004

Handy way to create stack trace