Monday, December 22nd, 2008
jQuery Gestures
Adrien Friggeri has taken the music player ui and spent some time to create a really nice gestures library that allows you to add mouse gestures to a web page, supports complex (i.e. sequences of) gestures and provides visual feedback through the use of a canvas element.
Example code looks like this:
JAVASCRIPT:
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// initialize the engine, inactive by default and set the trace color to red
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$.gestures.init({active:false,color:'#ff0000'});
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// adds a new gesture : Down
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$.gestures.register('D', function() {
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alert('down !');
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});
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// a more complex gesture : Down, Left, Up, Right
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$.gestures.register('DLUR', function() {
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alert('this is a rectangle, no ?');
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});
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// you can log unknown gestures :
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$.gestures.error(function(gesture) {
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alert("oops, I don't understand what \""+gesture+"\" means");
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});
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// useful keyboard tricks :
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$(window).keydown(function(e) {
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if ($.gestures.active() && e.which==27) {
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// disable capture when user presses ESC
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$.gestures.disable();
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} else if (!$.gestures.active() && e.which==17) {
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// enable capture when CTRL is pressed
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$.gestures.enable();
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}
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});
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$(window).keyup(function(e) {
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// disable capture when CTRL is not pressed
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if ($.gestures.active() && e.which==17) {
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$.gestures.disable();
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}
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});
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4 rating from 34 votes
No links?
http://random.friggeri.net/jquery-gestures/
lol!
This is a general comment: Please, Please, add links to the original article, site, blog or product. Even if you just mention someone/something, a link would be nice.
Please always add a link to the article. Some of these things are useful.
Not sure when I would use it, but its pretty damn cool. Also – a really good use of canvas.
Actually, the original blog article is here :
http://friggeri.net/blog/2008/12/21/jquery-gestures
To all concerned about the link not being included, it was an oversight. Posts on Ajaxian typically include many links but sometimes it slips through the cracks.
I’m not a fan of gestures per-se, but I know a lot of people that would love it, so I’ve given this a 5.
I turned on gestures in GMail (labs) and rarely use them. My hand always tracks to the buttons/links out of habit before I realize I could have just swiped right or left. For something like a photo gallery, where there is quick scrolling or browsing, this could be very useful.
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