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							<!DOCTYPE html><html lang="en"><head><title>API V1.1.1 | Granim.js</title><meta name="description" content="API for granim.js. Gradients animations in javascript."><meta charset="UTF-8"><meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1, maximum-scale=1"><link type="text/css" rel="stylesheet" href="assets/css/style.css"><link type="text/css" rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:400,400italic,700"><link rel="icon" href="favicon.ico" type="image/x-icon"><!-- Facebook Metas--><meta property="og:url" content="http://sarcadass.github.io/granim.js"><meta property="og:type" content="website"><meta property="og:title" content="Granim.js"><meta property="og:description" content="Create fluid and interactive gradients animations with this small (&lt; 17kB) .js library"><meta property="og:image" content="http://sarcadass.github.io/granim.js/assets/img/social-image.png"><!-- Twitter Metas--><meta property="twitter:card" content="summary_large_image"><meta property="twitter:creator" content="@Sarcadass"><meta property="twitter:title" content="Granim.js"><meta property="twitter:description" content="Create fluid and interactive gradients animations with this small (&lt; 17kB) .js library"><meta property="twitter:image" content="http://sarcadass.github.io/granim.js/assets/img/social-image.png"><meta property="twitter:image:width" content="1200"><meta property="twitter:image:height" content="630"><link type="text/css" rel="stylesheet" href="assets/css/prism.css"></head><body class="api"><header class="main-header"><div class="container clearfix"><div class="bloc-logo"><canvas id="logo-canvas"></canvas><a class="logo-mask" href="index.html">Granim.js</a></div><div class="main-nav"><div class="hamburger-icon"><span></span><span></span><span></span><span></span><span></span><span></span></div><nav><ul class="clearfix"><li><a class="text-link" href="https://github.com/sarcadass/granim.js/releases" target="_blank" rel="external">Download</a></li><li><a class="text-link" id="nav-api" href="api-v2.0.0.html">API</a></li><li><a class="text-link" id="nav-examples" href="examples.html">Examples</a></li><li><a class="github" href="https://github.com/sarcadass/granim.js" target="_blank" title="Github" rel="external"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 25 25">
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</a></li></ul></nav></div></div></header><div class="main-content"><div class="container bloc"><div class="title-bloc"><h1>API <span class="api-version">V1.1.1</span></h1><select id="version-select"><option value="/api-v2.0.0.html">v2.0.0</option><option value="/api-v1.1.1.html">v1.1.1</option></select></div><h2>options</h2><p>All the global options available.</p><table class="api-list"><thead><tr><th>Property</th><th>Default</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>element <span class="required">(required)</span></td><td>/</td><td>String or HTMLCanvasElement</td><td>A CSS selector for the <span class="snippet">canvas</span> element or the <span class="snippet">HTMLCanvasElement</span> itself (e.g. <span class="snippet">'#granim-canvas'</span> or <span class="snippet">document.querySelector('#granim-canvas')</span>) that will be used for the gradient animation.</td></tr><tr><td>name</td><td>false</td><td>String</td><td>This is the prefix used for the dark / light class name added
on the <span class="snippet">options.elToSetClassOn</span> element depending on the average gradient lightness,
the class will be updated during the animation.<br><strong>If you don't set a name, the class won't be set.</strong></td></tr><tr><td>elToSetClassOn</td><td>'body'</td><td>String</td><td>The element to set the dark / light class on (e.g. <span class="snippet">'#canvas-wrapper'</span>)<br><strong>Only useful if you set a <span class="snippet">name</span>.</strong></td></tr><tr><td>direction</td><td>'diagonal'</td><td>String</td><td>The orientation of the gradient, you can choose between:<ul><li><span class="snippet">'diagonal'</span></li><li><span class="snippet">'left-right'</span></li><li><span class="snippet">'top-bottom'</span></li><li><span class="snippet">'radial'</span></li></ul></td></tr><tr><td>isPausedWhenNotInView</td><td>false</td><td>Boolean</td><td>Does the animation stop when it's not in window view?<br>
(Despite this parameter, the animation always pause
when changing tab).</td></tr><tr><td>scrollDebounceThreshold <span class="version">v1.1.0</span></td><td>300</td><td>Int</td><td>What is the scroll <a class="link" href="https://css-tricks.com/debouncing-throttling-explained-examples/" target="_blank">debounce</a> threshold (in ms)?<br><strong>Only useful if </strong><span class="snippet">isPausedWhenNotInView</span> is set to <span class="snippet">true</span>.</td></tr><tr><td>opacity <span class="required">(required)</span></td><td>/</td><td>Array of Int</td><td>You can adapt the opacity of each color of the gradient.<br>
if you have two colors <span class="snippet">[1, .5]</span>,
or three <span class="snippet">[1, .5, 1]</span>...</td></tr><tr><td>stateTransitionSpeed</td><td>1000</td><td>Int</td><td>Duration of the animation when changing state.</td></tr><tr><td>defaultStateName</td><td>'default-state'</td><td>String</td><td>The name of the default state.</td></tr><tr><td>states <span class="required">(required)</span></td><td>/</td><td>Object</td><td>Object containing all the states, see more info below.</td></tr><tr><td>image <span class="version">v1.1.0</span></td><td>/</td><td>Object</td><td>Object containing image options, see more info below.</td></tr></tbody></table></div><div class="container bloc"><h2>options.states</h2><p>All the options available to customize the states and the different gradients.<br>
Create a state with the name you want then add these parameters.<br>
By default, the name of your first state is <span class="snippet">'default-state'</span>, you can change it with <span class="snippet">options.defaultStateName</span>.</p><table class="api-list"><thead><tr><th>Property</th><th>Default</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>gradients <span class="required">(required)</span></td><td>/</td><td>Array of Arrays</td><td>The different gradients with the different colors
e.g. <span class="snippet">[ ['#FFF', '#000'],
['#000', '#FFF'] ]</span>.<br>
The array can contain only one gradient.</td></tr><tr><td>transitionSpeed</td><td>5000</td><td>Int</td><td>Transition duration between each gradient.</td></tr><tr><td>loop</td><td>true</td><td>Boolean</td><td>When the animation has arrived to the last gradient, does it repeat?</td></tr></tbody></table></div><div class="container bloc" id="options-image"><h2>options.image <span class="version">v1.1.0</span></h2><p>All the options available to customize the image.<br>
The blending Mode works only if you set an image and gradients.</p><table class="api-list"><thead><tr><th>Property</th><th>Default</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>source <span class="required">(required)</span></td><td>/</td><td>String</td><td>The source of your image,
e.g. <span class="snippet">'img/800x200.jpg'</span>.</td></tr><tr><td>position</td><td>['center', 'center']</td><td>Array</td><td>The position of your image in the canvas, represented as an <span class="snippet">[x, y]</span> array.<br>
Possible values for <span class="snippet">x</span>:<ul><li><span class="snippet">'left'</span></li><li><span class="snippet">'center'</span></li><li><span class="snippet">'right'</span></li></ul>Possible values for <span class="snippet">y</span>:<ul><li><span class="snippet">'top'</span></li><li><span class="snippet">'center'</span></li><li><span class="snippet">'bottom'</span></li></ul></td></tr><tr><td>stretchMode</td><td>/</td><td>Array</td><td>Does the image have to stretch ? This option is useful for liquid/responsive design.
Represented as an <span class="snippet">[x, y]</span> array.<br>
Possible values for <span class="snippet">x</span> and <span class="snippet">y</span>:<ul><li><span class="snippet">'stretch'</span></li><li><span class="snippet">'stretch-if-smaller'</span></li><li><span class="snippet">'stretch-if-bigger'</span></li></ul></td></tr><tr><td>blendingMode</td><td>/</td><td>String</td><td>How the image should blend with the gradient ?
You can see all the possible values on&nbsp;<a class="link" href="https://developer.mozilla.org/fr/docs/Web/API/CanvasRenderingContext2D/globalCompositeOperation" target="_blank">MDN</a>.</td></tr></tbody></table></div><div class="container bloc"><h2>Callbacks</h2><p>You can set callbacks.</p><table class="api-list"><thead><tr><th>Property</th><th>Default</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>onStart</td><td>false</td><td>Function</td><td>Triggered when the animation start.</td></tr><tr><td>onGradientChange</td><td>false</td><td>Function</td><td>Triggered when a gradient change and loop.</td></tr><tr><td>onEnd</td><td>false</td><td>Function</td><td>Triggered when the animation end.</td></tr></tbody></table></div><div class="container bloc"><h2>Emitted events</h2><p>Granim will emit events you can listen to at key moments.</p><pre><code class="language-js">// You can listen to these events:
// - granim:start
// - granim:end
// - granim:loop
// - granim:gradientChange
<br>
// js
var canvasElement = document.querySelector('#granim-canvas');
canvasElement.addEventListener('granim:start', function(event) {
    console.log(event);
});
<br>
// with jQuery
$('#granim-canvas').on('granim:start', function(event) {
    console.log(event);
})</code></pre></div><div class="container bloc"><h2>Methods</h2><p>Methods to control the gradients.</p><pre><code class="language-js">// Play the animation
granimInstance.play();
<br>
// Pause the animation
granimInstance.pause();
<br>
// Stop the animation and clear the gradient
granimInstance.clear();
<br>
// Change state by putting its name in the argument
granimInstance.changeState('state-name');
<br>
// [v1.1.0] Change the direction
granimInstance.changeDirection('direction-name');
<br>
// [v1.1.0] Change the blending mode (useful only if you use an image)
granimInstance.changeBlendingMode('blending-mode-name');
<br>
// [v1.1.0] Destroy an instance and remove its events listeners
granimInstance.destroy();</code></pre></div><div class="container bloc"><h2>Complete configuration</h2><p>Complete configuration with two states, an image and callbacks set.</p><pre><code class="language-js">var granimInstance = new Granim({
    element: '',
    name: 'granim',
    elToSetClassOn: 'body',
    direction: 'diagonal',
    isPausedWhenNotInView: false,
    scrollDebounceThreshold: 300,
    opacity: [1, 1],
    stateTransitionSpeed: 1000,
    image : {
        source: '../assets/img/bg-forest.jpg',
        position: ['center', 'bottom'],
        stretchMode: ['stretch', 'stretch-if-bigger'],
        blendingMode: 'multiply',
    },
    states : {
        "default-state": {
            gradients: [
                ['#834d9b', '#d04ed6'],
                ['#1CD8D2', '#93EDC7']
            ],
            transitionSpeed: 5000,
            loop: true
        },
        "dark-state": {
            gradients: [
                ['#757F9A', '#D7DDE8'],
                ['#5C258D', '#4389A2']
            ],
            transitionSpeed: 5000,
            loop: true
        }
    },
    onStart: function() {
        console.log('Granim: onStart');
    },
    onGradientChange: function(colorDetails) {
        console.log('Granim: onGradientChange, details: ');
        console.log(colorDetails);
    },
    onEnd: function() {
        console.log('Granim: onEnd');
    }
);</code></pre><p>You can use more than 2 colors for the gradients,
but cannot have different length of colors in the
different states. you will also have to
<strong>adapt the opacity</strong>.</p><pre><code class="language-js">var granimInstance = new Granim({
    element: '',
    name: 'granim',
    elToSetClassOn: 'body',
    direction: 'diagonal',
    isPausedWhenNotInView: false,
    scrollDebounceThreshold: 300,
    opacity: [1, 1, .5, 1],
    stateTransitionSpeed: 1000,
    states : {
        "default-state": {
            gradients: [
                ['#834d9b', '#d04ed6', '#1CD8D2', '#93EDC7'],
                ['#1CD8D2', '#93EDC7', '#757F9A', '#4389A2']
            ],
            transitionSpeed: 5000,
            loop: true
        },
        "dark-state": {
            gradients: [
                ['#757F9A', '#D7DDE8', '#1CD8D2', '#93EDC7'],
                ['#5C258D', '#4389A2', '#1CD8D2', '#93EDC7']
            ],
            transitionSpeed: 5000,
            loop: true
        }
    }
);</code></pre></div><div class="footer container bloc clearfix"><p><strong>Granim v<span>2.0.0</span></strong>, created by <a href="https://twitter.com/Sarcadass" target="_blank">Benjamin Blonde</a>.
MIT license.<br>
Thanks to <a href="https://twitter.com/designcouch" target="_blank">@designcouch</a>
for the <a href="https://codepen.io/designcouch/pen/Atyop" target="_blank">hamburger icon</a>.
Inspired by <a href="http://uigradients.com/" target="_blank">uiGradients</a>.</p><div class="bloc-social"><a class="cta-social cta-facebook" href="http://www.facebook.com/sharer.php?u=http://sarcadass.github.io/granim.js" target="_blank"><svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="16px" height="16px" viewBox="0 0 16 16" enable-background="new 0 0 16 16" xml:space="preserve">
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