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

\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: 22px;
		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 [{$:/themes/tiddlywiki/vanilla/options/sidebarlayout}match[fixed-fluid]] %>

		.tc-sidebar-resizer {
			left: clamp(calc({{$:/themes/tiddlywiki/vanilla/metrics/storywidth}} - 28px),max(calc({{$:/themes/tiddlywiki/vanilla/metrics/storyleft}} + {{$:/themes/tiddlywiki/vanilla/metrics/storywidth}} - 28px),calc({{$:/themes/tiddlywiki/vanilla/metrics/storyright}} - 28px)),calc(100% - {{$:/themes/tiddlywiki/vanilla/metrics/sidebarminwidth}} - 28px));
		}

	<% else %>

		.tc-sidebar-resizer {
			left: clamp(calc({{$:/themes/tiddlywiki/vanilla/metrics/storyleft}} + {{$:/themes/tiddlywiki/vanilla/metrics/storyminwidth}} + 14px),calc(100% - {{$:/themes/tiddlywiki/vanilla/metrics/sidebarwidth}} + 14px),calc(100% - {{$:/themes/tiddlywiki/vanilla/metrics/sidebarminwidth}} + 14px));
		}

	<% 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;
	}
}