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jquery.interactive_bg.js
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jquery.interactive_bg.js
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/* ===========================================================
* jquery-interactive_bg.js v1.0
* ===========================================================
* Copyright 2014 Pete Rojwongsuriya.
* http://www.thepetedesign.com
*
* Create an interactive moving background
* that reacts to viewer's cursor
*
* https://github.com/peachananr/interactive_bg
*
* License: GPL v3
*
* ========================================================== */
!function($){
var defaults = {
strength: 25,
scale: 1.05,
animationSpeed: "100ms",
contain: true,
wrapContent: false
};
$.fn.interactive_bg = function(options){
return this.each(function(){
var settings = $.extend({}, defaults, options),
el = $(this),
h = el.outerHeight(),
w = el.outerWidth(),
sh = settings.strength / h,
sw = settings.strength / w,
has_touch = 'ontouchstart' in document.documentElement;
if (settings.contain == true) {
el.css({
overflow: "hidden"
});
}
// Insert new container so that the background can be contained when scaled.
if (settings.wrapContent == false) {
el.prepend("<div class='ibg-bg'></div>")
} else {
el.wrapInner("<div class='ibg-bg'></div>")
}
// Set background to the newly added container.
if (el.data("ibg-bg") !== undefined) {
el.find("> .ibg-bg").css({
background: "url('" + el.data("ibg-bg") + "') no-repeat center center",
"background-size": "cover",
});
}
el.find("> .ibg-bg").css({
width: w,
height: h
})
if(has_touch || screen.width <= 699) {
// For Mobile
// Add support for accelerometeron mobile
window.addEventListener('devicemotion', deviceMotionHandler, false);
function deviceMotionHandler(eventData) {
var accX = Math.round(event.accelerationIncludingGravity.x*10) / 10,
accY = Math.round(event.accelerationIncludingGravity.y*10) / 10,
xA = -(accX / 10) * settings.strength,
yA = -(accY / 10) * settings.strength,
newX = -(xA*2),
newY = -(yA*2);
el.find("> .ibg-bg").css({
"-webkit-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"-moz-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"-o-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")"
});
}
} else {
// For Desktop
// Animate only scaling when mouse enter
el.mouseenter(function(e) {
if (settings.scale != 1) el.addClass("ibg-entering")
el.find("> .ibg-bg").css({
"-webkit-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + ",0,0)",
"-moz-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + ",0,0)",
"-o-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + ",0,0)",
"transform": "matrix(" + settings.scale + ",0,0," + settings.scale + ",0,0)",
"-webkit-transition": "-webkit-transform " + settings.animationSpeed + " linear",
"-moz-transition": "-moz-transform " + settings.animationSpeed + " linear",
"-o-transition": "-o-transform " + settings.animationSpeed + " linear",
"transition": "transform " + settings.animationSpeed + " linear"
}).on("transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd", function(){
// This will signal the mousemove below to execute when the scaling animation stops
el.removeClass("ibg-entering")
});
}).mousemove(function(e){
// This condition prevents transition from causing the movement of the background to lag
if (!el.hasClass("ibg-entering") && !el.hasClass("exiting")) {
var pageX = e.pageX || e.clientX,
pageY = e.pageY || e.clientY,
pageX = (pageX - el.offset().left) - (w / 2),
pageY = (pageY - el.offset().top) - (h / 2),
newX = ((sw * pageX)) * - 1,
newY = ((sh * pageY)) * - 1;
// Use matrix to move the background from its origin
// Also, disable transition to prevent lag
el.find("> .ibg-bg").css({
"-webkit-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"-moz-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"-o-transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"transform": "matrix(" + settings.scale + ",0,0," + settings.scale + "," + newX + "," + newY + ")",
"-webkit-transition": "none",
"-moz-transition": "none",
"-o-transition": "none",
"transition": "none"
});
}
}).mouseleave(function(e) {
if (settings.scale != 1) el.addClass("ibg-exiting")
// Same condition applies as mouseenter. Rescale the background back to its original scale
el.addClass("ibg-exiting").find("> .ibg-bg").css({
"-webkit-transform": "matrix(1,0,0,1,0,0)",
"-moz-transform": "matrix(1,0,0,1,0,0)",
"-o-transform": "matrix(1,0,0,1,0,0)",
"transform": "matrix(1,0,0,1,0,0)",
"-webkit-transition": "-webkit-transform " + settings.animationSpeed + " linear",
"-moz-transition": "-moz-transform " + settings.animationSpeed + " linear",
"-o-transition": "-o-transform " + settings.animationSpeed + " linear",
"transition": "transform " + settings.animationSpeed + " linear"
}).on("transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd", function(){
el.removeClass("ibg-exiting")
});
});
}
});
}
}(window.jQuery);