<!DOCTYPE html>
|
<html>
|
<head>
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
<title>The source code</title>
|
<link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
|
<script type="text/javascript" src="../resources/prettify/prettify.js"></script>
|
<style type="text/css">
|
.highlight { display: block; background-color: #ddd; }
|
</style>
|
<script type="text/javascript">
|
function highlight() {
|
document.getElementById(location.hash.replace(/#/, "")).className = "highlight";
|
}
|
</script>
|
</head>
|
<body onload="prettyPrint(); highlight();">
|
<pre class="prettyprint lang-js"><span id='Ext-fx-Manager'>/**
|
</span> * @class Ext.fx.Manager
|
* Animation Manager which keeps track of all current animations and manages them on a frame by frame basis.
|
* @private
|
* @singleton
|
*/
|
|
Ext.define('Ext.fx.Manager', {
|
|
/* Begin Definitions */
|
|
singleton: true,
|
|
requires: ['Ext.util.MixedCollection',
|
'Ext.fx.target.Element',
|
'Ext.fx.target.ElementCSS',
|
'Ext.fx.target.CompositeElement',
|
'Ext.fx.target.CompositeElementCSS',
|
'Ext.fx.target.Sprite',
|
'Ext.fx.target.CompositeSprite',
|
'Ext.fx.target.Component'],
|
|
mixins: {
|
queue: 'Ext.fx.Queue'
|
},
|
|
<span id='Ext-fx-Manager-method-constructor'> /* End Definitions */
|
</span>
|
constructor: function() {
|
var me = this;
|
me.items = new Ext.util.MixedCollection();
|
me.mixins.queue.constructor.call(me);
|
|
// Do not use fireIdleEvent: false. Each tick of the TaskRunner needs to fire the idleEvent
|
// in case an animation callback/listener adds a listener.
|
me.taskRunner = new Ext.util.TaskRunner();
|
|
// this.requestAnimFrame = (function() {
|
// var raf = window.requestAnimationFrame ||
|
// window.webkitRequestAnimationFrame ||
|
// window.mozRequestAnimationFrame ||
|
// window.oRequestAnimationFrame ||
|
// window.msRequestAnimationFrame;
|
// if (raf) {
|
// return function(callback, element) {
|
// raf(callback);
|
// };
|
// }
|
// else {
|
// return function(callback, element) {
|
// window.setTimeout(callback, Ext.fx.Manager.interval);
|
// };
|
// }
|
// })();
|
},
|
|
<span id='Ext-fx-Manager-cfg-interval'> /**
|
</span> * @cfg {Number} interval Default interval in miliseconds to calculate each frame. Defaults to 16ms (~60fps)
|
*/
|
interval: 16,
|
|
<span id='Ext-fx-Manager-cfg-forceJS'> /**
|
</span> * @cfg {Boolean} forceJS Force the use of JavaScript-based animation instead of CSS3 animation, even when CSS3
|
* animation is supported by the browser. This defaults to true currently, as CSS3 animation support is still
|
* considered experimental at this time, and if used should be thouroughly tested across all targeted browsers.
|
* @protected
|
*/
|
forceJS: true,
|
|
<span id='Ext-fx-Manager-method-createTarget'> // @private Target factory
|
</span> createTarget: function(target) {
|
var me = this,
|
useCSS3 = !me.forceJS && Ext.supports.Transitions,
|
targetObj;
|
|
me.useCSS3 = useCSS3;
|
|
if (target) {
|
// dom element, string or fly
|
if (target.tagName || Ext.isString(target) || target.isFly) {
|
target = Ext.get(target);
|
targetObj = new Ext.fx.target['Element' + (useCSS3 ? 'CSS' : '')](target);
|
}
|
// Element
|
else if (target.dom) {
|
targetObj = new Ext.fx.target['Element' + (useCSS3 ? 'CSS' : '')](target);
|
}
|
// Element Composite
|
else if (target.isComposite) {
|
targetObj = new Ext.fx.target['CompositeElement' + (useCSS3 ? 'CSS' : '')](target);
|
}
|
// Draw Sprite
|
else if (target.isSprite) {
|
targetObj = new Ext.fx.target.Sprite(target);
|
}
|
// Draw Sprite Composite
|
else if (target.isCompositeSprite) {
|
targetObj = new Ext.fx.target.CompositeSprite(target);
|
}
|
// Component
|
else if (target.isComponent) {
|
targetObj = new Ext.fx.target.Component(target);
|
}
|
else if (target.isAnimTarget) {
|
return target;
|
}
|
else {
|
return null;
|
}
|
me.targets.add(targetObj);
|
return targetObj;
|
}
|
else {
|
return null;
|
}
|
},
|
|
<span id='Ext-fx-Manager-method-addAnim'> /**
|
</span> * Add an Anim to the manager. This is done automatically when an Anim instance is created.
|
* @param {Ext.fx.Anim} anim
|
*/
|
addAnim: function(anim) {
|
var me = this,
|
items = me.items,
|
task = me.task;
|
|
// Make sure we use the anim's id, not the anim target's id here. The anim id will be unique on
|
// each call to addAnim. `anim.target` is the DOM element being targeted, and since multiple animations
|
// can target a single DOM node concurrently, the target id cannot be assumned to be unique.
|
items.add(anim.id, anim);
|
//Ext.log('+ added anim ', anim.id, ', target: ', anim.target.getId(), ', duration: ', anim.duration);
|
|
// Start the timer if not already running
|
if (!task && items.length) {
|
task = me.task = {
|
run: me.runner,
|
interval: me.interval,
|
scope: me
|
};
|
//Ext.log('--->> Starting task');
|
me.taskRunner.start(task);
|
}
|
},
|
|
<span id='Ext-fx-Manager-method-removeAnim'> /**
|
</span> * Remove an Anim from the manager. This is done automatically when an Anim ends.
|
* @param {Ext.fx.Anim} anim
|
*/
|
removeAnim: function(anim) {
|
var me = this,
|
items = me.items,
|
task = me.task;
|
|
items.removeAtKey(anim.id);
|
//Ext.log(' X removed anim ', anim.id, ', target: ', anim.target.getId(), ', frames: ', anim.frameCount, ', item count: ', items.length);
|
|
// Stop the timer if there are no more managed Anims
|
if (task && !items.length) {
|
//Ext.log('[]--- Stopping task');
|
me.taskRunner.stop(task);
|
delete me.task;
|
}
|
},
|
|
<span id='Ext-fx-Manager-method-runner'> /**
|
</span> * @private
|
* Runner function being called each frame
|
*/
|
runner: function() {
|
var me = this,
|
items = me.items.getRange(),
|
i = 0,
|
len = items.length,
|
anim;
|
|
//Ext.log(' executing anim runner task with ', len, ' items');
|
me.targetArr = {};
|
|
// Single timestamp for all animations this interval
|
me.timestamp = new Date();
|
|
// Loop to start any new animations first before looping to
|
// execute running animations (which will also include all animations
|
// started in this loop). This is a subtle difference from simply
|
// iterating in one loop and starting then running each animation,
|
// but separating the loops is necessary to ensure that all new animations
|
// actually kick off prior to existing ones regardless of array order.
|
// Otherwise in edge cases when there is excess latency in overall
|
// performance, allowing existing animations to run before new ones can
|
// lead to dropped frames and subtle race conditions when they are
|
// interdependent, which is often the case with certain Element fx.
|
for (; i < len; i++) {
|
anim = items[i];
|
|
if (anim.isReady()) {
|
//Ext.log(' starting anim ', anim.id, ', target: ', anim.target.id);
|
me.startAnim(anim);
|
}
|
}
|
|
for (i = 0; i < len; i++) {
|
anim = items[i];
|
|
if (anim.isRunning()) {
|
//Ext.log(' running anim ', anim.target.id);
|
me.runAnim(anim);
|
//<debug>
|
} else if (!me.useCSS3) {
|
// When using CSS3 transitions the animations get paused since they are not
|
// needed once the transition is handed over to the browser, so we can
|
// ignore this case. However if we are doing JS animations and something is
|
// paused here it's possibly unintentional.
|
//Ext.log(' (i) anim ', anim.id, ' is active but not running...');
|
//</debug>
|
}
|
}
|
|
// Apply all the pending changes to their targets
|
me.applyPendingAttrs();
|
},
|
|
<span id='Ext-fx-Manager-method-startAnim'> /**
|
</span> * @private
|
* Start the individual animation (initialization)
|
*/
|
startAnim: function(anim) {
|
anim.start(this.timestamp);
|
},
|
|
<span id='Ext-fx-Manager-method-runAnim'> /**
|
</span> * @private
|
* Run the individual animation for this frame
|
*/
|
runAnim: function(anim) {
|
if (!anim) {
|
return;
|
}
|
var me = this,
|
useCSS3 = me.useCSS3 && anim.target.type == 'element',
|
elapsedTime = me.timestamp - anim.startTime,
|
lastFrame = (elapsedTime >= anim.duration),
|
target, o;
|
|
target = this.collectTargetData(anim, elapsedTime, useCSS3, lastFrame);
|
|
// For CSS3 animation, we need to immediately set the first frame's attributes without any transition
|
// to get a good initial state, then add the transition properties and set the final attributes.
|
if (useCSS3) {
|
//Ext.log(' (i) using CSS3 transitions');
|
|
// Flush the collected attributes, without transition
|
anim.target.setAttr(target.anims[anim.id].attributes, true);
|
|
// Add the end frame data
|
me.collectTargetData(anim, anim.duration, useCSS3, lastFrame);
|
|
// Pause the animation so runAnim doesn't keep getting called
|
anim.paused = true;
|
|
target = anim.target.target;
|
// We only want to attach an event on the last element in a composite
|
if (anim.target.isComposite) {
|
target = anim.target.target.last();
|
}
|
|
// Listen for the transitionend event
|
o = {};
|
o[Ext.supports.CSS3TransitionEnd] = anim.lastFrame;
|
o.scope = anim;
|
o.single = true;
|
target.on(o);
|
}
|
},
|
|
<span id='Ext-fx-Manager-method-collectTargetData'> /**
|
</span> * @private
|
* Collect target attributes for the given Anim object at the given timestamp
|
* @param {Ext.fx.Anim} anim The Anim instance
|
* @param {Number} timestamp Time after the anim's start time
|
* @param {Boolean} [useCSS3=false] True if using CSS3-based animation, else false
|
* @param {Boolean} [isLastFrame=false] True if this is the last frame of animation to be run, else false
|
* @return {Object} The animation target wrapper object containing the passed animation along with the
|
* new attributes to set on the target's element in the next animation frame.
|
*/
|
collectTargetData: function(anim, elapsedTime, useCSS3, isLastFrame) {
|
var targetId = anim.target.getId(),
|
target = this.targetArr[targetId];
|
|
if (!target) {
|
// Create a thin wrapper around the target so that we can create a link between the
|
// target element and its associated animations. This is important later when applying
|
// attributes to the target so that each animation can be independently run with its own
|
// duration and stopped at any point without affecting other animations for the same target.
|
target = this.targetArr[targetId] = {
|
id: targetId,
|
el: anim.target,
|
anims: {}
|
};
|
}
|
|
// This is a wrapper for the animation so that we can also save state along with it,
|
// including the current elapsed time and lastFrame status. Even though this method only
|
// adds a single anim object per call, each target element could have multiple animations
|
// associated with it, which is why the anim is added to the target's `anims` hash by id.
|
target.anims[anim.id] = {
|
id: anim.id,
|
anim: anim,
|
elapsed: elapsedTime,
|
isLastFrame: isLastFrame,
|
// This is the object that gets applied to the target element below in applyPendingAttrs():
|
attributes: [{
|
duration: anim.duration,
|
easing: (useCSS3 && anim.reverse) ? anim.easingFn.reverse().toCSS3() : anim.easing,
|
// This is where the magic happens. The anim calculates what its new attributes should
|
// be based on the current frame and returns those as a hash of values.
|
attrs: anim.runAnim(elapsedTime)
|
}]
|
};
|
|
return target;
|
},
|
|
<span id='Ext-fx-Manager-method-applyPendingAttrs'> /**
|
</span> * @private
|
* Apply all pending attribute changes to their targets
|
*/
|
applyPendingAttrs: function() {
|
var targetArr = this.targetArr,
|
target, targetId, animWrap, anim, animId;
|
|
// Loop through each target
|
for (targetId in targetArr) {
|
if (targetArr.hasOwnProperty(targetId)) {
|
target = targetArr[targetId];
|
|
// Each target could have multiple associated animations, so iterate those
|
for (animId in target.anims) {
|
if (target.anims.hasOwnProperty(animId)) {
|
animWrap = target.anims[animId];
|
anim = animWrap.anim;
|
|
// If the animation has valid attributes, set them on the target
|
if (animWrap.attributes && anim.isRunning()) {
|
//Ext.log(' > applying attributes for anim ', animWrap.id, ', target: ', target.id, ', elapsed: ', animWrap.elapsed);
|
target.el.setAttr(animWrap.attributes, false, animWrap.isLastFrame);
|
|
// If this particular anim is at the last frame end it
|
if (animWrap.isLastFrame) {
|
//Ext.log(' running last frame for ', animWrap.id, ', target: ', targetId);
|
anim.lastFrame();
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
});
|
</pre>
|
</body>
|
</html>
|