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add browser scrollbar width detection #37

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add browser scrollbar width detection #37

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17 changes: 15 additions & 2 deletions simple-scrollbar.js
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@

this.el = d.createElement('div');
this.el.setAttribute('class', 'ss-content');
this.el.style.width = 'calc(100% + ' + ss.scrollWidth + 'px)';

if (this.direction === 'rtl') {
this.el.classList.add('rtl');
Expand All @@ -76,8 +77,8 @@
this.target.classList.add('ss-container');

var css = w.getComputedStyle(el);
if (css['height'] === '0px' && css['max-height'] !== '0px') {
el.style.height = css['max-height'];
if (css['height'] === '0px' && css['max-height'] !== '0px') {
el.style.height = css['max-height'];
}
}

Expand Down Expand Up @@ -114,9 +115,21 @@
}
}

function getScrollWidth() {
var outer = d.createElement('div');
var inner = d.createElement('div');
outer.style.width = inner.style.width = '100%';
outer.style.overflow = 'scroll';
d.body.appendChild(outer).appendChild(inner);
var scroll_width = outer.offsetWidth-inner.offsetWidth;
outer.parentNode.removeChild(outer);
return scroll_width;
}

d.addEventListener('DOMContentLoaded', initAll);
ss.initEl = initEl;
ss.initAll = initAll;
ss.scrollWidth = getScrollWidth();

w.SimpleScrollbar = ss;
})(window, document);