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89 lines
3.3 KiB
JavaScript
89 lines
3.3 KiB
JavaScript
// A few of our width properties in zulip depend on the width of the
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// browser scrollbar that is generated at the far right side of the
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// page, which unfortunately varies depending on the browser and
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// cannot be detected directly using CSS. As a result, we adjust a
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// number of element widths based on the value detected here.
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//
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// From https://stackoverflow.com/questions/13382516/getting-scroll-bar-width-using-javascript
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function getScrollbarWidth() {
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const outer = document.createElement("div");
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outer.style.visibility = "hidden";
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outer.style.width = "100px";
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outer.style.msOverflowStyle = "scrollbar"; // needed for WinJS apps
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document.body.appendChild(outer);
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const widthNoScroll = outer.offsetWidth;
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// force scrollbars
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outer.style.overflow = "scroll";
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// add innerdiv
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const inner = document.createElement("div");
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inner.style.width = "100%";
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outer.appendChild(inner);
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const widthWithScroll = inner.offsetWidth;
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// remove divs
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outer.parentNode.removeChild(outer);
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return widthNoScroll - widthWithScroll;
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}
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let sbWidth;
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exports.initialize = function () {
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// Workaround for browsers with fixed scrollbars
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sbWidth = getScrollbarWidth();
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if (sbWidth > 0) {
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$(".header").css("left", "-" + sbWidth + "px");
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$(".header-main").css("left", sbWidth + "px");
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$(".header-main .column-middle").css("margin-right", 250 + sbWidth + "px");
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$(".fixed-app").css("left", "-" + sbWidth + "px");
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$(".fixed-app .column-middle").css("margin-left", 250 + sbWidth + "px");
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$(".column-right").css("right", sbWidth + "px");
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$(".app-main .right-sidebar").css({
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"margin-left": sbWidth + "px",
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width: 250 - sbWidth + "px",
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});
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$("#compose").css("left", "-" + sbWidth + "px");
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$(".compose-content").css({left: sbWidth + "px", "margin-right": 250 + sbWidth + "px"});
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$("#keyboard-icon").css({right: sbWidth + 35 + "px"});
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$("head").append(
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"<style> @media (max-width: 1165px) { .compose-content, .header-main .column-middle { margin-right: " +
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(7 + sbWidth) +
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"px !important; } } " +
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"@media (max-width: 775px) { .fixed-app .column-middle { margin-left: " +
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(7 + sbWidth) +
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"px !important; } } " +
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"</style>",
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);
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}
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exports.set_layout_width();
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};
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exports.set_layout_width = function () {
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// This logic unfortunately leads to a flash of mispositioned
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// content when reloading a Zulip browser window. More details
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// are available in the comments on the max-width of 1400px in
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// the .app-main CSS rules.
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if (page_params.fluid_layout_width) {
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$(".header-main").css("max-width", "inherit");
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$(".app .app-main").css("max-width", "inherit");
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$(".fixed-app .app-main").css("max-width", "inherit");
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$("#compose-container").css("max-width", "inherit");
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} else {
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$(".header-main").css("max-width", 1400 + sbWidth + "px");
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$(".app .app-main").css("max-width", 1400 + "px");
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$(".fixed-app .app-main").css("max-width", 1400 + sbWidth + "px");
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$("#compose-container").css("max-width", 1400 + sbWidth + "px");
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}
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};
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window.scroll_bar = exports;
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