title: $:/themes/tiddlywiki/vanilla/sidebar-resizer
tags: [[$:/tags/Stylesheet]]
code-body: yes

\import [function[get.base.functions.theme],{$:/theme}first[]!is[missing]] :else[function[get.base.functions.theme],{$:/theme}first[]is[shadow]] :else[[$:/themes/tiddlywiki/vanilla/functions]]

\function sidebarbreakpoint() [{$:/themes/tiddlywiki/vanilla/metrics/sidebarbreakpoint}]

\function sidebarbreakpoint-minus-one() [{$:/themes/tiddlywiki/vanilla/metrics/sidebarbreakpoint}removesuffix[px]subtract[1]addsuffix[px]] ~[{$:/themes/tiddlywiki/vanilla/metrics/sidebarbreakpoint}]

\rules only filteredtranscludeinline transcludeinline macrodef macrocallinline macrocallblock conditional

@media (min-width: <<sidebarbreakpoint>>) {

	.tc-sidebar-resizer {
		position: fixed;
		top: 0;
		height: 100%;
		width: <<sidebar.resizer.width>>;
		transition: opacity 100ms;
		opacity: 0.1;
		cursor: ew-resize;
		background: linear-gradient(<<colour muted-foreground>>, <<colour muted-foreground>>) no-repeat center/2px 100%;
	}

	.tc-sidebar-resizer:hover {
		opacity: 0.6;
	}

	@media (pointer: coarse) {

		.tc-sidebar-resizer {
			background: <<colour muted-foreground>>;
		}

		.tc-sidebar-resizer:hover {
			opacity: 0.1;
		}
	}

	.tc-sidebar-resizer-pointermove-eventcatcher, .tc-sidebar-resizer-pointermove {
		position: absolute;
		top: 0;
		left: 0;
		right: 0;
		width: 100%;
		height: 100%;
		min-height: 100%;
		z-index: -1;
	}

	.tc-sidebar-resizer, .tc-sidebar-resizer-pointermove-eventcatcher, .tc-sidebar-resizer-pointermove {
		touch-action: none;
		user-select: none;
	}

	<%if [[$:/state/sidebar/resizing]!is[missing]] %>

		.tc-sidebar-resizer-pointermove-eventcatcher-wrapper {
			z-index: 801;
		}

		.tc-sidebar-resizer-pointermove-eventcatcher {
			z-index: 802;
		}

		.tc-sidebar-resizer-pointermove {
			z-index: 803;
			cursor: ew-resize;
		}

		.tc-sidebar-resizer {
			opacity: 0.6;
		}

		@media (pointer: coarse) {

			.tc-sidebar-resizer {
				opacity: 0.25;
			}
		}

	<% endif %>

	<%if [<set.storywidth.storyright>match[yes]] %>

		.tc-sidebar-resizer {
			left: clamp(calc(<<get.theme.metric storyleft>> + <<get.theme.metric storyminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)),clamp(calc(<<get.theme.metric storywidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)),max(calc(<<get.theme.metric storyleft>> + <<get.theme.metric storywidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)),calc(<<get.theme.metric storyright>> - (2 * <<get.theme.metric storypaddingright>> / 3))),max(calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3) + (<<get.theme.metric storyleft>> + <<get.theme.metric storywidth>> - <<get.theme.metric storyright>>)),calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)))),calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)));
		}

		.tc-sidebar-left .tc-sidebar-resizer {
			left: auto;
			right: clamp(calc(<<get.theme.metric storyleft>> + <<get.theme.metric storyminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)),clamp(calc(<<get.theme.metric storywidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)),max(calc(<<get.theme.metric storyleft>> + <<get.theme.metric storywidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)),calc(<<get.theme.metric storyright>> - (2 * <<get.theme.metric storypaddingright>> / 3))),max(calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3) + (<<get.theme.metric storyleft>> + <<get.theme.metric storywidth>> - <<get.theme.metric storyright>>)),calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)))),calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)));
		}

	<% endif %>

	<%if [<set.sidebarwidth>match[yes]] %>

		.tc-sidebar-resizer {
			left: clamp(calc(<<get.theme.metric storyleft>> + <<get.theme.metric storyminwidth>> + (<<get.theme.metric storypaddingright>> / 3)),calc(100% - <<get.theme.metric sidebarwidth>> + (<<get.theme.metric storypaddingright>> / 3)),calc(100% - <<get.theme.metric sidebarminwidth>> + (<<get.theme.metric storypaddingright>> / 3)));
		}

		.tc-sidebar-left .tc-sidebar-resizer {
			left: auto;
			right: clamp(calc(<<get.theme.metric storyleft>> + <<get.theme.metric storyminwidth>> + (<<get.theme.metric storypaddingright>> / 3)),calc(100% - <<get.theme.metric sidebarwidth>> + (<<get.theme.metric storypaddingright>> / 3)),calc(100% - <<get.theme.metric sidebarminwidth>> + (<<get.theme.metric storypaddingright>> / 3)));
		}

	<% endif %>

	<%if [<set.centralised>match[yes]] %>

		.tc-sidebar-resizer {
			left: min(calc(50% + (<<get.theme.metric storywidth>> / 2) - (2 * <<get.theme.metric storypaddingright>> / 3)),calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)));
		}

		.tc-sidebar-left .tc-sidebar-resizer {
			left: auto;
			right: min(calc(50% + (<<get.theme.metric storywidth>> / 2) - (2 * <<get.theme.metric storypaddingright>> / 3)),calc(100% - <<get.theme.metric sidebarminwidth>> - (2 * <<get.theme.metric storypaddingright>> / 3)));
		}

	<% endif %>

	<%if [{$:/state/sidebar}match[no]] %>

		.tc-sidebar-resizer-pointerdown-eventcatcher, .tc-sidebar-resizer-pointermove-eventcatcher-wrapper, .tc-sidebar-resizer-pointermove-eventcatcher, .tc-sidebar-resizer-pointermove, .tc-sidebar-resizer {
			display: none;
		}

	<% endif %>

}

@media (max-width: <<sidebarbreakpoint-minus-one>>) {

	.tc-sidebar-resizer-pointerdown-eventcatcher, .tc-sidebar-resizer-pointermove-eventcatcher-wrapper, .tc-sidebar-resizer-pointermove-eventcatcher, .tc-sidebar-resizer-pointermove, .tc-sidebar-resizer {
		display: none;
	}
}