Created
March 22, 2013 23:15
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very basic pinch-to-zoom using YUI3 and touch events.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8'/> | |
| <meta name="viewport" content = "width = device-width, initial-scale = 2.3, user-scalable = no" /> | |
| <title></title> | |
| <script src="http://yui.yahooapis.com/3.9.0/build/yui/yui-min.js"></script> | |
| <style> | |
| #box { | |
| width: 150px; | |
| height: 150px; | |
| background: #ccc; | |
| position: relative; | |
| top: 10%; | |
| left: 10%; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="box"></div> | |
| <script> | |
| YUI().use('event-move', 'node', function (Y) { | |
| var box = Y.one('#box'); | |
| box.on('touchstart', function (e) { | |
| console.log('touchstart ' + ' with ' + e.touches.length + ' touches'); | |
| }); | |
| box.on('touchmove', function (e) { | |
| var s = 150; | |
| console.log('touchmove ' + ' with ' + e.touches.length + ' touches'); | |
| Y.one('#box').setStyles({ | |
| width: s * e.scale + 'px', | |
| height: s * e.scale + 'px' | |
| }); | |
| console.log(e.scale); | |
| }); | |
| box.on('touchend', function (e) { | |
| console.log('touchend ' + ' with ' + e.touches.length + ' touches'); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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