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2010 August Archive at Jozef Chúťka's blog
August 27, 2010
Publish Your AIR Applications To Facebook
Hi folks! Today, while mounting some of my projects into AIR, I realized that it would be great if I could pusblish AIR badges over Facebook. You know what? That is possible! I have created a simple flex application + facebook application that, based on parameters, generates AIR badge for an app. Now its time to share the stuff with you, feel free to publish your AIR badges, and let me know how do you like it.
August 26, 2010
break for for each label loops while
Quick Tip: Labeling Loops
Did you know you can label loops in ActionScript 3? Yes, you can! I got inspired by latest tweets referencing source code in image. Lets do some small experiments… Label all of them:
var a:uint, b:uint = 0;
loopA:for(a = 0; a < 10; a++)
loopB:while(b++ < 100)
loopC:for each(var c:uint in [0,1,2,3])
break loopB;
trace(a, b, c); // traces "10 10 0"August 25, 2010
AIR air.swf allowBrowserInvocation getApplicationVersion
Quick Tip: Checking The Version Of An Installed AIR Application
Here is a quick tip how to check the version of your installed AIR application from an application running in flash player. In order to make your AIR application (system) be able to respond to the requests for installed version correctly you need to define allowBrowserInvocation within your AIR descriptor file (app.xml). If you don’t do this, you won’t be able to query version information on your application:
<allowBrowserInvocation>true</allowBrowserInvocation>Now your AIR application will respond correctly with its installed version. With this setting on, the installed AIR application can be launched via the browser invocation feature (by the user clicking a link in a page in a web browser). Be sure to consider security implications.
Now, to get version info from any application running in flash player (or AIR) you simply call getApplicationVersion() method on air.swf file located on adobe domain.
August 24, 2010
Quick Tip: How To Print From Google Wave
Google Wave is an online software application formerly developed by Google. Soon after you get used to this new collaboration tool, you may leave behind old spammy e-mails used for communication. While creating waves is easy and intuitive, there is no button to print the wave :-(. Though, there is a chance. Print tip originally posted in comments on googlewaveinfo.com. In order to make this work, you have to run chrome with custom user-agent (iPhone 3).
August 9, 2010
AIR domain LocalConnection underscore
The Ultimate Guide To LocalConnection – SWF to SWF to AIR to AIR to SWF
Even if it stands in documentstion (some crucial things mentioned in one line somewhere), it was really tricky thing to figure out how to make LocalConnection-s work between different application runtimes (flash player / air). It got even more tangled with empty flash player error saying “Error #2044: Unhandled StatusEvent:. level=error, code=”. Basically, there is a generic method/form, with underscore prefix for connection name, that you can successfully use in all cases, but if your application requires higher security you should define your connections more exactly.
Based on your applications origin (AIR / flash player) you may define a few types of communication nature:
SWF to SWF on a same domain
SWF to SWF on different domains
AIR to SWF
SWF to AIR
AIR to AIR
August 9, 2010
ContextMenu exe projector showDefaultContextMenu Stage standalone
Quick Tip: Standalone Player Default Menu Disappeared
Did you know that setting stage.showDefaultContextMenu = false, makes disappear not only right-click context-menu (ContextMenu), but also standalone player default window menu (File, View, Options, Help)? I came on this one when tried to create projectors (.exe) files from .swf-s files running in standalone player using “File / Create projector…” feature. All tested/opened .swf files were showing player window menu ok, just one .swf made player window menu disappear, after a while I discovered the showDefaultContextMenu was the cause.
stage.showDefaultContextMenu = falseAugust 4, 2010
AND left NOT OR right shift XOR
ActionScript Bitwise Calculator
In computer programming, a bitwise operation operates on one or more bit patterns or binary numerals at the level of their individual bits. Bitwise operations are extremely fast and compact. Anytime we can speak to a computer in its native binary tongue, we save room and gain speed (moock.org). Now, lets see how it works. I have created a small flex application, try playing with numbers (input decimals) to understand what is actually happening with bits using different operators (10 and 3 are good inputs).
August 2, 2010
Quick Tip: Multi-Dimensional Vectors
Have you ever thought of creating or using multi-dimensional Vector in ActionScript? Yes, it is possible and the definition syntax comes pretty logical to me now ;-).
var list:Vector.<Vector.<int>> = new Vector.<Vector.<int>>();…or shorter declaration:
var list:Vector.<Vector.<int>> = new <Vector.<int>>[];now your vectors have two dimensions, I mean:
list[0][0]August 2, 2010
ByteArray Endian pixel bender Shader ShaderJob Vector
Pixel Bender Inputs – Vector or ByteArray
Pixel Bender for Flash Player lets you play some more advanced games. Based on your needs you can force your kernels to “eat” not only BitmapData, but also ByteArray-s or Vector-s. With this knowledge, you can simply use Pixel Bender kernels for some fast math or processing like 3D engines (3D to 2D projection) etc. Lets have a look at some simple demos, how to push vector and raw bytes directly into shader via ShaderJob: