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jmpress.impress.js
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jmpress.impress.js
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/*!
* jmpress.js v0.4.5
* http://jmpressjs.github.com/jmpress.js
*
* A jQuery plugin to build a website on the infinite canvas.
*
* Copyright 2014 Kyle Robinson Young @shama & Tobias Koppers @sokra
* Licensed MIT
* http://www.opensource.org/licenses/mit-license.php
*
* Based on the foundation laid by Bartek Szopka @bartaz
*//*
* core.js
* The core of jmpress.js
*/
(function( $, document, window, undefined ) {
'use strict';
/**
* Set supported prefixes
*
* @access protected
* @return Function to get prefixed property
*/
var pfx = (function () {
var style = document.createElement('dummy').style,
prefixes = 'Webkit Moz O ms Khtml'.split(' '),
memory = {};
return function ( prop ) {
if ( typeof memory[ prop ] === "undefined" ) {
var ucProp = prop.charAt(0).toUpperCase() + prop.substr(1),
props = (prop + ' ' + prefixes.join(ucProp + ' ') + ucProp).split(' ');
memory[ prop ] = null;
for ( var i in props ) {
if ( style[ props[i] ] !== undefined ) {
memory[ prop ] = props[i];
break;
}
}
}
return memory[ prop ];
};
}());
/**
* map ex. "WebkitTransform" to "-webkit-transform"
*/
function mapProperty( name ) {
if(!name) {
return;
}
var index = 1 + name.substr(1).search(/[A-Z]/);
var prefix = name.substr(0, index).toLowerCase();
var postfix = name.substr(index).toLowerCase();
return "-" + prefix + "-" + postfix;
}
function addComma( attribute ) {
if(!attribute) {
return "";
}
return attribute + ",";
}
/**
* Return an jquery object only if it's not empty
*/
function ifNotEmpty(el) {
if(el.length > 0) {
return el;
}
return null;
}
/**
* Default Settings
*/
var defaults = {
/* CLASSES */
stepSelector: '.step'
,containerClass: ''
,canvasClass: ''
,areaClass: ''
,notSupportedClass: 'not-supported'
/* CONFIG */
,fullscreen: true
/* ANIMATION */
,animation: {
transformOrigin: 'top left'
,transitionProperty: addComma(mapProperty(pfx('transform'))) + addComma(mapProperty(pfx('perspective'))) + 'opacity'
,transitionDuration: '1s'
,transitionDelay: '500ms'
,transitionTimingFunction: 'ease-in-out'
,transformStyle: "preserve-3d"
}
,transitionDuration: 1500
};
var callbacks = {
'beforeChange': 1
,'beforeInitStep': 1
,'initStep': 1
,'beforeInit': 1
,'afterInit': 1
,'beforeDeinit': 1
,'afterDeinit': 1
,'applyStep': 1
,'unapplyStep': 1
,'setInactive': 1
,'beforeActive': 1
,'setActive': 1
,'selectInitialStep': 1
,'selectPrev': 1
,'selectNext': 1
,'selectHome': 1
,'selectEnd': 1
,'idle': 1
,'applyTarget': 1
};
for(var callbackName in callbacks) {
defaults[callbackName] = [];
}
/**
* Initialize jmpress
*/
function init( args ) {
args = $.extend(true, {}, args || {});
// accept functions and arrays of functions as callbacks
var callbackArgs = {};
var callbackName = null;
for (callbackName in callbacks) {
callbackArgs[callbackName] = $.isFunction( args[callbackName] ) ?
[ args[callbackName] ] :
args[callbackName];
args[callbackName] = [];
}
// MERGE SETTINGS
var settings = $.extend(true, {}, defaults, args);
for (callbackName in callbacks) {
if (callbackArgs[callbackName]) {
Array.prototype.push.apply(settings[callbackName], callbackArgs[callbackName]);
}
}
/*** MEMBER VARS ***/
var jmpress = $( this )
,container = null
,area = null
,oldStyle = {
container: ""
,area: ""
}
,canvas = null
,current = null
,active = false
,activeSubstep = null
,activeDelegated = false;
/*** MEMBER FUNCTIONS ***/
// functions have to be called with this
/**
* Init a single step
*
* @param element the element of the step
* @param idx number of step
*/
function doStepInit( element, idx ) {
var data = dataset( element );
var step = {
oldStyle: $(element).attr("style") || ""
};
var callbackData = {
data: data
,stepData: step
};
callCallback.call(this, 'beforeInitStep', $(element), callbackData);
step.delegate = data.delegate;
callCallback.call(this, 'initStep', $(element), callbackData);
$(element).data('stepData', step);
if ( !$(element).attr('id') ) {
$(element).attr('id', 'step-' + (idx + 1));
}
callCallback.call(this, 'applyStep', $(element), callbackData);
}
/**
* Deinit a single step
*
* @param element the element of the step
*/
function doStepDeinit( element ) {
var stepData = $(element).data('stepData');
$(element).attr("style", stepData.oldStyle);
callCallback.call(this, 'unapplyStep', $(element), {
stepData: stepData
});
}
/**
* Reapplies stepData to the element
*
* @param element
*/
function doStepReapply( element ) {
callCallback.call(this, 'unapplyStep', $(element), {
stepData: element.data("stepData")
});
callCallback.call(this, 'applyStep', $(element), {
stepData: element.data("stepData")
});
}
/**
* Completly deinit jmpress
*
*/
function deinit() {
if ( active ) {
callCallback.call(this, 'setInactive', active, {
stepData: $(active).data('stepData')
,reason: "deinit"
} );
}
if (current.jmpressClass) {
$(jmpress).removeClass(current.jmpressClass);
}
callCallback.call(this, 'beforeDeinit', $(this), {});
$(settings.stepSelector, jmpress).each(function( idx ) {
doStepDeinit.call(jmpress, this );
});
container.attr("style", oldStyle.container);
if(settings.fullscreen) {
$("html").attr("style", "");
}
area.attr("style", oldStyle.area);
$(canvas).children().each(function() {
jmpress.append( $( this ) );
});
if( settings.fullscreen ) {
canvas.remove();
} else {
canvas.remove();
area.remove();
}
callCallback.call(this, 'afterDeinit', $(this), {});
$(jmpress).data("jmpressmethods", false);
}
/**
* Call a callback
*
* @param callbackName String callback which should be called
* @param element some arguments to the callback
* @param eventData
*/
function callCallback( callbackName, element, eventData ) {
eventData.settings = settings;
eventData.current = current;
eventData.container = container;
eventData.parents = element ? getStepParents(element) : null;
eventData.current = current;
eventData.jmpress = this;
var result = {};
$.each( settings[callbackName], function(idx, callback) {
result.value = callback.call( jmpress, element, eventData ) || result.value;
});
return result.value;
}
/**
*
*/
function getStepParents( el ) {
return $(el).parentsUntil(jmpress).not(jmpress).filter(settings.stepSelector);
}
/**
* Reselect the active step
*
* @param String type reason of reselecting step
*/
function reselect( type ) {
return select( { step: active, substep: activeSubstep }, type);
}
/**
* Select a given step
*
* @param el element to select
* @param type reason of changing step
* @return Object element selected
*/
function select( el, type ) {
var substep;
if ( $.isPlainObject( el ) ) {
substep = el.substep;
el = el.step;
}
if ( typeof el === 'string') {
el = jmpress.find( el ).first();
}
if ( !el || !$(el).data('stepData') ) {
return false;
}
scrollFix.call(this);
var step = $(el).data('stepData');
var cancelSelect = false;
callCallback.call(this, "beforeChange", el, {
stepData: step
,reason: type
,cancel: function() {
cancelSelect = true;
}
});
if (cancelSelect) {
return undefined;
}
var target = {};
var delegated = el;
if($(el).data("stepData").delegate) {
delegated = ifNotEmpty($(el).parentsUntil(jmpress).filter(settings.stepSelector).filter(step.delegate)) ||
ifNotEmpty($(el).near(step.delegate)) ||
ifNotEmpty($(el).near(step.delegate, true)) ||
ifNotEmpty($(step.delegate, jmpress));
if(delegated) {
step = delegated.data("stepData");
} else {
// Do not delegate if expression not found
delegated = el;
}
}
if ( activeDelegated ) {
callCallback.call(this, 'setInactive', activeDelegated, {
stepData: $(activeDelegated).data('stepData')
,delegatedFrom: active
,reason: type
,target: target
,nextStep: delegated
,nextSubstep: substep
,nextStepData: step
} );
}
var callbackData = {
stepData: step
,delegatedFrom: el
,reason: type
,target: target
,substep: substep
,prevStep: activeDelegated
,prevSubstep: activeSubstep
,prevStepData: activeDelegated && $(activeDelegated).data('stepData')
};
callCallback.call(this, 'beforeActive', delegated, callbackData);
callCallback.call(this, 'setActive', delegated, callbackData);
// Set on step class on root element
if (current.jmpressClass) {
$(jmpress).removeClass(current.jmpressClass);
}
$(jmpress).addClass(current.jmpressClass = 'step-' + $(delegated).attr('id') );
if (current.jmpressDelegatedClass) {
$(jmpress).removeClass(current.jmpressDelegatedClass);
}
$(jmpress).addClass(current.jmpressDelegatedClass = 'delegating-step-' + $(el).attr('id') );
callCallback.call(this, "applyTarget", delegated, $.extend({
canvas: canvas
,area: area
,beforeActive: activeDelegated
}, callbackData));
active = el;
activeSubstep = callbackData.substep;
activeDelegated = delegated;
if(current.idleTimeout) {
clearTimeout(current.idleTimeout);
}
current.idleTimeout = setTimeout(function() {
callCallback.call(this, 'idle', delegated, callbackData);
}, Math.max(1, settings.transitionDuration - 100));
return delegated;
}
/**
* This should fix ANY kind of buggy scrolling
*/
function scrollFix() {
(function fix() {
if ($(container)[0].tagName === "BODY") {
try {
window.scrollTo(0, 0);
} catch(e) {}
}
$(container).scrollTop(0);
$(container).scrollLeft(0);
function check() {
if ($(container).scrollTop() !== 0 ||
$(container).scrollLeft() !== 0) {
fix();
}
}
setTimeout(check, 1);
setTimeout(check, 10);
setTimeout(check, 100);
setTimeout(check, 200);
setTimeout(check, 400);
}());
}
/**
* Alias for select
*/
function goTo( el ) {
return select.call(this, el, "jump" );
}
/**
* Goto Next Slide
*
* @return Object newly active slide
*/
function next() {
return select.call(this, callCallback.call(this, 'selectNext', active, {
stepData: $(active).data('stepData')
,substep: activeSubstep
}), "next" );
}
/**
* Goto Previous Slide
*
* @return Object newly active slide
*/
function prev() {
return select.call(this, callCallback.call(this, 'selectPrev', active, {
stepData: $(active).data('stepData')
,substep: activeSubstep
}), "prev" );
}
/**
* Goto First Slide
*
* @return Object newly active slide
*/
function home() {
return select.call(this, callCallback.call(this, 'selectHome', active, {
stepData: $(active).data('stepData')
}), "home" );
}
/**
* Goto Last Slide
*
* @return Object newly active slide
*/
function end() {
return select.call(this, callCallback.call(this, 'selectEnd', active, {
stepData: $(active).data('stepData')
}), "end" );
}
/**
* Manipulate the canvas
*
* @param props
* @return Object
*/
function canvasMod( props ) {
css(canvas, props || {});
return $(canvas);
}
/**
* Return current step
*
* @return Object
*/
function getActive() {
return activeDelegated && $(activeDelegated);
}
/**
* fire a callback
*
* @param callbackName
* @param element
* @param eventData
* @return void
*/
function fire( callbackName, element, eventData ) {
if( !callbacks[callbackName] ) {
$.error( "callback " + callbackName + " is not registered." );
} else {
return callCallback.call(this, callbackName, element, eventData);
}
}
/**
* PUBLIC METHODS LIST
*/
jmpress.data("jmpressmethods", {
select: select
,reselect: reselect
,scrollFix: scrollFix
,goTo: goTo
,next: next
,prev: prev
,home: home
,end: end
,canvas: canvasMod
,container: function() { return container; }
,settings: function() { return settings; }
,active: getActive
,current: function() { return current; }
,fire: fire
,init: function(step) {
doStepInit.call(this, $(step), current.nextIdNumber++);
}
,deinit: function(step) {
if(step) {
doStepDeinit.call(this, $(step));
} else {
deinit.call(this);
}
}
,reapply: doStepReapply
});
/**
* Check for support
* This will be removed in near future, when support is coming
*
* @access protected
* @return void
*/
function checkSupport() {
var ua = navigator.userAgent.toLowerCase();
return (ua.search(/(iphone)|(ipod)|(android)/) === -1) || (ua.search(/(chrome)/) !== -1);
}
// BEGIN INIT
// CHECK FOR SUPPORT
if (checkSupport() === false) {
if (settings.notSupportedClass) {
jmpress.addClass(settings.notSupportedClass);
}
return;
} else {
if (settings.notSupportedClass) {
jmpress.removeClass(settings.notSupportedClass);
}
}
// grabbing all steps
var steps = $(settings.stepSelector, jmpress);
// GERNERAL INIT OF FRAME
container = jmpress;
area = $('<div />');
canvas = $('<div />');
$(jmpress).children().filter(steps).each(function() {
canvas.append( $( this ) );
});
if(settings.fullscreen) {
container = $('body');
$("html").css({
overflow: 'hidden'
});
area = jmpress;
}
oldStyle.area = area.attr("style") || "";
oldStyle.container = container.attr("style") || "";
if(settings.fullscreen) {
container.css({
height: '100%'
});
jmpress.append( canvas );
} else {
container.css({
position: "relative"
});
area.append( canvas );
jmpress.append( area );
}
$(container).addClass(settings.containerClass);
$(area).addClass(settings.areaClass);
$(canvas).addClass(settings.canvasClass);
document.documentElement.style.height = "100%";
container.css({
overflow: 'hidden'
});
var props = {
position: "absolute"
,transitionDuration: '0s'
};
props = $.extend({}, settings.animation, props);
css(area, props);
css(area, {
top: '50%'
,left: '50%'
,perspective: '1000px'
});
css(canvas, props);
current = {};
callCallback.call(this, 'beforeInit', null, {});
// INITIALIZE EACH STEP
steps.each(function( idx ) {
doStepInit.call(jmpress, this, idx );
});
current.nextIdNumber = steps.length;
callCallback.call(this, 'afterInit', null, {});
// START
select.call(this, callCallback.call(this, 'selectInitialStep', "init", {}) );
if (settings.initClass) {
$(steps).removeClass(settings.initClass);
}
}
/**
* Return default settings
*
* @return Object
*/
function getDefaults() {
return defaults;
}
/**
* Register a callback or a jmpress function
*
* @access public
* @param name String the name of the callback or function
* @param func Function? the function to be added
*/
function register(name, func) {
if( $.isFunction(func) ) {
if( methods[name] ) {
$.error( "function " + name + " is already registered." );
} else {
methods[name] = func;
}
} else {
if( callbacks[name] ) {
$.error( "callback " + name + " is already registered." );
} else {
callbacks[name] = 1;
defaults[name] = [];
}
}
}
/**
* Set CSS on element w/ prefixes
*
* @return Object element which properties were set
*
* TODO: Consider bypassing pfx and blindly set as jQuery
* already checks for support
*/
function css( el, props ) {
var key, pkey, cssObj = {};
for ( key in props ) {
if ( props.hasOwnProperty(key) ) {
pkey = pfx(key);
if ( pkey !== null ) {
cssObj[pkey] = props[key];
}
}
}
$(el).css(cssObj);
return el;
}
/**
* Return dataset for element
*
* @param el element
* @return Object
*/
function dataset( el ) {
if ( $(el)[0].dataset ) {
return $.extend({}, $(el)[0].dataset);
}
function toCamelcase( str ) {
str = str.split( '-' );
for( var i = 1; i < str.length; i++ ) {
str[i] = str[i].substr(0, 1).toUpperCase() + str[i].substr(1);
}
return str.join( '' );
}
var returnDataset = {};
var attrs = $(el)[0].attributes;
$.each(attrs, function ( idx, attr ) {
if ( attr.nodeName.substr(0, 5) === "data-" ) {
returnDataset[ toCamelcase(attr.nodeName.substr(5)) ] = attr.nodeValue;
}
});
return returnDataset;
}
/**
* Returns true, if jmpress is initialized
*
* @return bool
*/
function initialized() {
return !!$(this).data("jmpressmethods");
}
/**
* PUBLIC STATIC METHODS LIST
*/
var methods = {
init: init
,initialized: initialized
,deinit: function() {}
,css: css
,pfx: pfx
,defaults: getDefaults
,register: register
,dataset: dataset
};
/**
* $.jmpress()
*/
$.fn.jmpress = function( method ) {
function f() {
var jmpressmethods = $(this).data("jmpressmethods");
if ( jmpressmethods && jmpressmethods[method] ) {
return jmpressmethods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( methods[method] ) {
return methods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( callbacks[method] && jmpressmethods ) {
var settings = jmpressmethods.settings();
var func = Array.prototype.slice.call( arguments, 1 )[0];
if ($.isFunction( func )) {
settings[method] = settings[method] || [];
settings[method].push(func);
}
} else if ( typeof method === 'object' || ! method ) {
return init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist on jQuery.jmpress' );
}
// to allow chaining
return this;
}
var args = arguments;
var result;
$(this).each(function(idx, element) {
result = f.apply(element, args);
});
return result;
};
$.extend({
jmpress: function( method ) {
if ( methods[method] ) {
return methods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( callbacks[method] ) {
// plugin interface
var func = Array.prototype.slice.call( arguments, 1 )[0];
if ($.isFunction( func )) {
defaults[method].push(func);
} else {
$.error( 'Second parameter should be a function: $.jmpress( callbackName, callbackFunction )' );
}
} else {
$.error( 'Method ' + method + ' does not exist on jQuery.jmpress' );
}
}
});
}(jQuery, document, window));
/*
* near.js
* Find steps near each other
*/
(function( $, document, window, undefined ) {
'use strict';
// add near( selector, backwards = false) to jquery
function checkAndGo( elements, func, selector, backwards ) {
var next;
elements.each(function(idx, element) {
if(backwards) {
next = func(element, selector, backwards);
if (next) {
return false;
}
}
if( $(element).is(selector) ) {
next = element;
return false;
}
if(!backwards) {
next = func(element, selector, backwards);
if (next) {
return false;
}
}
});
return next;
}
function findNextInChildren(item, selector, backwards) {
var children = $(item).children();
if(backwards) {
children = $(children.get().reverse());
}
return checkAndGo( children, findNextInChildren, selector, backwards );
}
function findNextInSiblings(item, selector, backwards) {
return checkAndGo(
$(item)[backwards ? "prevAll" : "nextAll"](),
findNextInChildren, selector, backwards );
}
function findNextInParents(item, selector, backwards) {
var next;
var parents = $(item).parents();
parents = $(parents.get());
$.each(parents.get(), function(idx, element) {
if( backwards && $(element).is(selector) ) {
next = element;
return false;
}
next = findNextInSiblings(element, selector, backwards);
if(next) {
return false;
}
});
return next;
}
$.fn.near = function( selector, backwards ) {
var array = [];
$(this).each(function(idx, element) {
var near = (backwards ?
false :
findNextInChildren( element, selector, backwards )) ||
findNextInSiblings( element, selector, backwards ) ||
findNextInParents( element, selector, backwards );
if( near ) {
array.push(near);
}
});
return $(array);
};
}(jQuery, document, window));
/*
* transform.js
* The engine that powers the transforms or falls back to other methods
*/
(function( $, document, window, undefined ) {
'use strict';
/* FUNCTIONS */
function toCssNumber(number) {
return (Math.round(10000*number)/10000)+"";
}
/**
* 3D and 2D engines
*/
var engines = {
3: {
transform: function( el, data ) {
var transform = 'translate(-50%,-50%)';
$.each(data, function(idx, item) {
var coord = ["X", "Y", "Z"];
var i;
if(item[0] === "translate") { // ["translate", x, y, z]
transform += " translate3d(" + toCssNumber(item[1] || 0) + "px," + toCssNumber(item[2] || 0) + "px," + toCssNumber(item[3] || 0) + "px)";
} else if(item[0] === "rotate") {
var order = item[4] ? [1, 2, 3] : [3, 2, 1];
for(i = 0; i < 3; i++) {
transform += " rotate" + coord[order[i]-1] + "(" + toCssNumber(item[order[i]] || 0) + "deg)";
}
} else if(item[0] === "scale") {
for(i = 0; i < 3; i++) {
transform += " scale" + coord[i] + "(" + toCssNumber(item[i+1] || 1) + ")";
}
}
});
$.jmpress("css", el, $.extend({}, { transform: transform }));
}
}
,2: {
transform: function( el, data ) {
var transform = 'translate(-50%,-50%)';
$.each(data, function(idx, item) {
var coord = ["X", "Y"];
if(item[0] === "translate") { // ["translate", x, y, z]
transform += " translate(" + toCssNumber(item[1] || 0) + "px," + toCssNumber(item[2] || 0) + "px)";
} else if(item[0] === "rotate") {
transform += " rotate(" + toCssNumber(item[3] || 0) + "deg)";
} else if(item[0] === "scale") {
for(var i = 0; i < 2; i++) {
transform += " scale" + coord[i] + "(" + toCssNumber(item[i+1] || 1) + ")";
}
}
});
$.jmpress("css", el, $.extend({}, { transform: transform }));
}
}
,1: {
// CHECK IF SUPPORT IS REALLY NEEDED?
// this not even work without scaling...
// it may better to display the normal view
transform: function( el, data ) {
var anitarget = { top: 0, left: 0 };
$.each(data, function(idx, item) {
var coord = ["X", "Y"];
if(item[0] === "translate") { // ["translate", x, y, z]
anitarget.left = Math.round(item[1] || 0) + "px";
anitarget.top = Math.round(item[2] || 0) + "px";
}
});
el.animate(anitarget, 1000); // TODO: Use animation duration
}
}
};
/**
* Engine to power cross-browser translate, scale and rotate.
*/
var engine = (function() {
if ($.jmpress("pfx", "perspective")) {
return engines[3];
} else if ($.jmpress("pfx", "transform")) {
return engines[2];
} else {
// CHECK IF SUPPORT IS REALLY NEEDED?
return engines[1];
}
}());
$.jmpress("defaults").reasonableAnimation = {};
$.jmpress("initStep", function( step, eventData ) {
var data = eventData.data;
var stepData = eventData.stepData;
var pf = parseFloat;
$.extend(stepData, {
x: pf(data.x) || 0
,y: pf(data.y) || 0
,z: pf(data.z) || 0
,r: pf(data.r) || 0
,phi: pf(data.phi) || 0
,rotate: pf(data.rotate) || 0
,rotateX: pf(data.rotateX) || 0
,rotateY: pf(data.rotateY) || 0
,rotateZ: pf(data.rotateZ) || 0
,revertRotate: false
,scale: pf(data.scale) || 1
,scaleX: pf(data.scaleX) || false
,scaleY: pf(data.scaleY) || false
,scaleZ: pf(data.scaleZ) || 1
});
});
$.jmpress("afterInit", function( nil, eventData ) {
var stepSelector = eventData.settings.stepSelector,
current = eventData.current;
current.perspectiveScale = 1;
current.maxNestedDepth = 0;
var nestedSteps = $(eventData.jmpress).find(stepSelector).children(stepSelector);
while(nestedSteps.length) {
current.maxNestedDepth++;
nestedSteps = nestedSteps.children(stepSelector);
}
});
$.jmpress("applyStep", function( step, eventData ) {
$.jmpress("css", $(step), {
position: "absolute"
,transformStyle: "preserve-3d"
});
if ( eventData.parents.length > 0 ) {
$.jmpress("css", $(step), {
top: "50%"