zulip/static/js/scroll_bar.js

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JavaScript
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$(function () {
$("#stream-filters-container").perfectScrollbar({
suppressScrollX: true,
useKeyboard: false,
wheelSpeed: 20
});
});
function scrollbarWidth() {
$('body').prepend('<div id="outertest" style="width:200px; height:150px; position: absolute; top: 0; left: 0; overflow-x:hidden; overflow-y:scroll; background: #ff0000; visibility: hidden;"><div id="innertest" style="width:100%; height: 200px; overflow-y: visible;">&nbsp;</div></div>');
var scrollwidth = $("#outertest").outerWidth() - $("#innertest").outerWidth();
$("#outertest").remove();
return scrollwidth;
}
// Workaround for browsers with fixed scrollbars
$(function () {
var sbWidth = scrollbarWidth();
if (sbWidth > 0) {
$(".header").css("left", "-" + sbWidth + "px");
$(".header-main").css("left", sbWidth + "px");
$(".header-main").css("max-width", (1400 + sbWidth) + "px");
$(".header-main .column-middle").css("margin-right", (250 + sbWidth) + "px");
$(".fixed-app").css("left", "-" + sbWidth + "px");
$(".fixed-app .app-main").css("max-width", (1400 + sbWidth) + "px");
$(".fixed-app .column-middle").css("margin-left", (250 + sbWidth) + "px");
$(".column-right").css("right", sbWidth + "px");
$(".app-main .right-sidebar").css({"margin-left": (sbWidth) + "px",
"width": (250 - sbWidth) + "px"});
$("#compose").css("left", "-" + sbWidth + "px");
$(".compose-content").css({"left": sbWidth + "px",
"margin-right": (250 + sbWidth) + "px"});
$("#compose-container").css("max-width", (1400 + sbWidth) + "px");
$("head").append("<style> @media (max-width: 975px) { .compose-content, .header-main .column-middle { margin-right: " + (7 + sbWidth) + "px !important; } } " +
"@media (max-width: 775px) { .fixed-app .column-middle { margin-left: " + (7 + sbWidth) + "px !important; } } " +
"</style>");
}
});