Tuesday, December 31, 2013

Circular Menu with D3.js

WheelMenu is a circular menu aimed at mobile that allows you to quickly select from a small set of options quickly and with your thumb. You can see an example of the WheelMenu running in jsFiddle.
Right now the menu only works for 6 slices, but let me know if you need other number of slices.

Check the github page for more details on how to use the WheelMenu and for access to the source code. If you're using the OutSystems Platform, head over to the community and download the component.

Credits to the WheelMenu original design go to Tiago Simões and Daniel Nobre.

Sunday, October 6, 2013

D3 drag and drop tree

I needed a heavily customizable drag and drop tree and I couldn't find one that really fit my needs, so I built one. It was also a great excuse to learn about D3, although most of the work was messing with the quirks of drag and drop.

Anyway, although the code is far from decent and the tree is still work under progress, I decided to make it available to whomever wants to use. I hope it's useful for you, and be sure to let me know if you have any problems.

More info and download at github!

Saturday, August 17, 2013

Automatically building a cache manifest file

HTML5 has the capability to work offline and it allows you to cache files of your application on the browser by using a cache manifest. The question is, which files to cache?

Simple applications, with an HTML file, a couple of JS and CSS files are not a problem. But as soon as you move to more complex applications, the number of files explodes - think imported CSS files, background images, images within your page, etc. So here's a little help to build your cache file!

1. Start by getting the offlineHelpers.js file and put it on your website. It's easier if you put it on the folder of the page you want to cache, but you can put it anywhere. If you don't have a site yet, download the whole project and play with the provided test.html file.

2. Be sure the page you want to cache includes jQuery. This is only needed to run the offlineHelpers script, you can remove it afterwards. You don't even need to download it, just src the script from here: http://code.jquery.com/jquery-1.10.1.min.js

3. Launch chrome (yes, for now it only works on chrome). Load the offllineHelpers script by opening the console (cmd+alt+j on the Mac) and typing $.getScript('offlineHelpers.js'). Next, call offlineHelpers.getCacheFile() on the console.

4. Calling getCacheFile should result on a bunch of debug lines (in gray) followed by your cache manifest file. Something like:

Getting stylesheets
Found an import: jumbotron-responsive.css
Getting JS files
Getting Image files

# CSS Files

# Javascript Files

# Image Files

Next, tweak the result and copy to your cache.manifest file.

Let me know how this worked for you! If the script missed a file, let me know on the comments and I'll try to fix it!