14. May 2013

How to debug :hover pseudo class in Google Chrome Developer tool

Google Chrome developer tool is simply one of the best tools available for debugging of HTML5 applications.

It has one neat feature: possibility to inspect CSS of element and editing it on the fly.

That works fine for normal styles, but what about :hover state?

There is one “hidden” option which allows to switch element to :hover state.

Inspect element of HTML. You should see Styles on the right hand side. There are 3 icons. Click the middle one with arrow sign. It will pop up menu with checkboxes. You can select here CSS pseudo classes like :active, :focus, :hover or :visited.

google-chrome-dev-hover

To learn more about capabilities of Google Chrome developer tools I recommend to go through free course Discover Dev Tools from Codeschool.com.

Posted in Rich Internet Application (Tags: , , , , ) | No Comments

20. October 2011

What is my IP?

Sometimes you need to know what is your current public IP.

How to determine it?

Yes, you can login via ssh to remote server and type who to see users and hosts.

There is much simpler way. Just google it ;-)

Ask Google: What is my IP

Kudos to Lordrat for this simple useful tip.

Posted in Software engineering (Tags: , , ) | No Comments

1. July 2011

Google Gravity

Do you know what happens if you apply gravity constant on HTML elements?

No? Try to search for something by this enhanced Google Search page.

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5. June 2011

Web based file uploader – uploading more than 100 MB

Klokantech.com provides new commercial version of web based File Uploader.

This uploader is able to upload more than 100 MB file.

Solution is combining HTML5 with Flash fallback for older browsers.

File Uploader is able to upload data to Amazon S3, Google App Engine or own infrastructure.

Posted in Rich Internet Application (Tags: , , , , , , , , , ) | 1 Comment

24. May 2011

WebGL: 3 Dreams of Black

Just grab Google Chrome or Firefox 4 and watch this nice video clip 3 Dreams of Black.

Wonderful piece of computer art. :-)

You can find more info about technology behind the scene in following video:

 

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21. May 2011

aDevCamp Prague – slides and links

Mobile first! Plynulý workflow - AIR

Box2D Engine: Box2D, Lee Brimelow – GotoAndLearn()

Web: aDevCamp.cz

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17. May 2011

Smooth workflow for mobile development

World of mobile devices is quite complex. Increasing number of operating systems and platforms is spliting market and making it harder to implement app that works across different devices.

Thankfully there are some good solutions. Flex development team made a huge step forward and  they prepared tools for whole workflow.

If you’re interested in mobile development take a look at this video from Edge newsletter.

I’ll show part of this workflow also this week in Prague at Android Dev Camp. So feel free to stop by. We can discuss many topics related to mobile and Flex/AIR. ;-)

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2. May 2011

21.5. 2011 – Prague – androidDevCamp

I was invited to give a talk about development based on Adobe AIR platform for Google Android. :-)

This is my favorit topic. AIR platform has been here for several years and it is quite mature. It provides solid framework for large range of applications. AIR platform is good for developing small apps or even the big enterprise systems.

Flex/AIR framework is open source. Flash Builder IDE based on Eclipse is very useful tool for developers.

You can find more details about this event at aDevCamp.cz.

It’s great opportunity to meet people from Android community.

Posted in Rich Internet Application (Tags: , , , ) | No Comments

29. March 2011

Googlingrad

Brno bolo dlhú dobu známe ako Šalingrad, podľa slávnych šalín. Pokiaľ neviete, čo je šalina, neboli ste v Brne :-)

Situácia sa začína dramaticky meniť. Google postupne zaplavuje celé Brno.

Najskôr to bolo nenápadné. Google obsadil niektoré šaliny, premaľoval ich na bielo a napísal na ne, že Google Mapy sú skvelé. Zo šalín sa tým pádom stali Googlelíny.

Keď chcel človek nastúpiť do Googlu, tak nemusel lietať nikam do Írska na pohovor. Stačilo počkať pár minút, prihnala sa Googlelíná a človek mohol nastúpiť. Nepačilo sa vám v Googli? Prosím, odíďte, ale až na zastávke.

Ďalšia invázia sa rozmohla pred pár týždňami. Google vytesnil z reklamných plôch rôzne menšie lokálne manufaktúry ako Miele, LG, Panasonic a pani s harmonikou. Obsadil hlavné uzly vrátane Tesca.

Zatiaľ ešte niekoľko vekých megabannerov si drží svoje pozície. Koncentrácia Chromu v meste dosahuje kritické hodnoty.

Šalingrad sa pomaly, ale isto mení na Googlingrad.

Posted in Thoughts (Tags: , , , ) | No Comments

26. February 2011

Apps for Google Android – Video

Video recording from my talk about development of applications for Google Android is available at mojandroid.sk.

This video is available thanks to Fero Chovaňák.

Posted in Rich Internet Application (Tags: , , , , , , , , , , ) | No Comments

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