Created
January 30, 2010 09:24
-
-
Save chwkai/290490 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> | |
| <title>Animation demo</title> | |
| <style type="text/css"> | |
| #content{ | |
| height:200px; | |
| width:200px; | |
| background:red; | |
| } | |
| </style> | |
| <script type="text/javascript"> | |
| var Samples = {}; | |
| /** | |
| * | |
| * @param {Object} element "element to perform the animation" | |
| * @param {Object} duration "the duration of the animation" | |
| * @param {Object} fps | |
| * @param {Object} easing "function for caculating the transition" | |
| * @param {Object} callback "function to call when animation completed" | |
| */ | |
| Samples.show = function(element, duration, fps, easing, callback){ | |
| var interval = 1000 / fps; | |
| element.style.opacity = 0; | |
| var offsets = easing(element.style.opacity, 1, duration, fps); | |
| var intervalId = window.setInterval(_onTick, interval); | |
| function _onTick(){ | |
| if(offsets.length > 0){ | |
| var offsetValue = offsets.shift(); | |
| element.style.opacity = parseFloat(element.style.opacity) + offsetValue; | |
| } | |
| else{ | |
| window.clearInterval(intervalId); | |
| if(callback){ | |
| callback.apply(element, null); | |
| } | |
| } | |
| } | |
| }; | |
| Samples.linear = function(currentValue, targetValue, duration, fps){ | |
| var offsets = []; | |
| var times = duration * fps / 1000; | |
| var offsetValue = (targetValue - currentValue) / times; | |
| for(var i = 0; i < times; i++){ | |
| offsets.push(offsetValue); | |
| } | |
| return offsets; | |
| }; | |
| window.onload = function(){ | |
| document.getElementById("show").onclick = function(){ | |
| Samples.show(document.getElementById("content"), 1000, 40, Samples.linear, onFinished); | |
| } | |
| }; | |
| function onFinished(){ | |
| window.alert("animation has finished"); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <div><input type="button" id="show" value="show me"/></div> | |
| <div id="content"></div> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment