mirror of https://github.com/toddmotto/echo.git
Raphael Eidus
11 years ago
3 changed files with 39 additions and 101 deletions
@ -1,2 +1,2 @@
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/*! Echo v1.5.0 | (c) 2014 @toddmotto | MIT license | github.com/toddmotto/echo */ |
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window.Echo=function(a,b){"use strict";var c,d,e,f,g=[],h=[],i=function(){},j=function(a,b){var c=a.getBoundingClientRect();return c.right>=b.l&&c.bottom>=b.t&&c.left<=b.r&&c.top<=b.b},k=function(){var a,d,e,k,l=g.length;if(k={l:0-c.l,t:0-c.t,b:(window.innerHeight||b.documentElement.clientHeight)+c.b,r:(window.innerWidth||b.documentElement.clientWidth)+c.r},l>0)for(d=0;l>d;d++)e=g[d],e&&j(e,k)&&(f&&(e.setAttribute("data-echo-placeholder",e.src),h.push(e)),e.src=e.getAttribute("data-echo"),i(e,"load"),g.splice(d,1),l=g.length,d--);if(a=h.length,a>0)for(d=0;a>d;d++)e=h[d],e&&!j(e,k)&&(e.src=e.getAttribute("data-echo-placeholder"),i(e,"unload"),h.splice(d,1),a=h.length,d--,g.push(e));0===a&&0===l&&n()},l=function(){clearTimeout(e),e=setTimeout(k,d)},m=function(e){function j(a,b){return parseInt(a||b,10)}var m=b.querySelectorAll("img[data-echo]");e=e||{};var n=e.offset||0,o=e.offsetVertical||n,p=e.offsetHorizontal||n;c={t:j(e.offsetTop,o),b:j(e.offsetBottom,o),l:j(e.offsetLeft,p),r:j(e.offsetRight,p)},d=j(e.throttle,250),f=!!e.unload,i=e.callback||i,g=[],h=[];for(var q=0;q<m.length;q++)g.push(m[q]);k(),b.addEventListener?(a.addEventListener("scroll",l,!1),a.addEventListener("load",l,!1)):(a.attachEvent("onscroll",l),a.attachEvent("onload",l))},n=function(){b.removeEventListener?a.removeEventListener("scroll",l):a.detachEvent("onscroll",l),clearTimeout(e)};return{init:m,detach:n,render:k}}(this,document); |
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window.Echo=function(a,b){"use strict";var c,d,e,f,g=function(){},h=function(a,b){var c=a.getBoundingClientRect();return c.right>=b.l&&c.bottom>=b.t&&c.left<=b.r&&c.top<=b.b},i=function(){var a,d,e,i,j,k=[].slice.call(b.querySelectorAll("img[data-echo]"));for(j={l:0-c.l,t:0-c.t,b:(window.innerHeight||b.documentElement.clientHeight)+c.b,r:(window.innerWidth||b.documentElement.clientWidth)+c.r},e=0;d>e;e++)i=k[e],h(i,j)?(f&&i.setAttribute("data-echo-placeholder",i.src),i.src=i.getAttribute("data-echo"),f||i.removeAttribute("data-echo"),g(i,"load")):f&&(a=i.getAttribute("data-echo-placeholder"))&&(i.src=a,i.removeAttribute("data-echo-placeholder"),g(i,"unload"));d||l()},j=function(){clearTimeout(e),e=setTimeout(i,d)},k=function(e){function h(a,b){return parseInt(a||b,10)}e=e||{};var k=e.offset||0,l=e.offsetVertical||k,m=e.offsetHorizontal||k;c={t:h(e.offsetTop,l),b:h(e.offsetBottom,l),l:h(e.offsetLeft,m),r:h(e.offsetRight,m)},d=h(e.throttle,250),f=!!e.unload,g=e.callback||g,i(),b.addEventListener?(a.addEventListener("scroll",j,!1),a.addEventListener("load",j,!1)):(a.attachEvent("onscroll",j),a.attachEvent("onload",j))},l=function(){b.removeEventListener?a.removeEventListener("scroll",j):a.detachEvent("onscroll",j),clearTimeout(e)};return{init:k,detach:l,render:i}}(this,document); |
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