mediawiki-skins-Citizen/resources/mixins.less

/*
 * Citizen - Mixins
 * https://starcitizen.tools
 */

@import 'variables.less';

.citizen-card( @border-radius: true ) {
	background-color: var( --color-surface-1 );
	border: 1px solid var( --border-color-base );
	box-shadow: var( --box-shadow-dialog );

	& when ( @border-radius ) {
		border-radius: var( --border-radius--medium );
	}
}

// Collaspe animation setup
.citizen-card-hide( @position, @axis: '', @fadeChildren: true ) {
	pointer-events: none;
	opacity: 0;
	transform: ~'scale@{axis}( 0 )';
	transform-origin: @position;

	& when ( @fadeChildren ) {
		> * {
			opacity: 0;
		}
	}
}

// Expand animiation setup
// When using fadeChildren, the child elements need to have
// opacity: 0 set manually
.citizen-card-show( @fadeChildren: true ) {
	z-index: @z-index-overlay;
	pointer-events: auto;
	opacity: 1;
	// HACK: So that visiblity won't wait 250ms to become visible
	transition-delay: 0ms;
	transform: none;

	& when ( @fadeChildren ) {
		> * {
			.citizen-card-content-show;
		}
	}
}

// Fade content when users open the menu
// But GTFO instantly when they close the menu
.citizen-card-content-show() {
	opacity: 1;
	transition: var( --transition-menu );
	transition-property: opacity;
}

// Transition animation
.citizen-card-transition() {
	transition: var( --transition-menu );
	transition-property: transform, opacity;
}

// Header card popups
.citizen-header-card( @position ) {
	position: absolute;
	right: 0;
	bottom: 100%;
	left: 0;
	max-height: var( --header-card-maxheight );

	@media ( min-width: @min-width-breakpoint-tablet ) {
		& when ( @position = start ) {
			right: unset;
		}

		& when ( @position = end ) {
			left: unset;
		}
	}

	@media ( min-width: @min-width-breakpoint-desktop ) {
		right: unset;
		left: 100%;
		& when ( @position = start ) {
			top: 0;
			bottom: unset;
		}

		& when ( @position = end ) {
			bottom: 0;
		}
	}
}

.citizen-sticky-header( @topOffset: 0, @bottomBorder: true, @zIndex: true ) {
	position: -webkit-sticky;
	position: sticky;
	top: @topOffset;

	& when ( @bottomBorder ) {
		border-bottom: 1px solid var( --border-color-base );
	}

	& when ( @zIndex ) {
		z-index: @z-index-page-header;
	}

	// HACK: Hide overflow
	// This has an issue if parent has overflow set
	&::before {
		position: absolute;
		top: @topOffset;
		right: ~'calc( var(--padding-page ) * -1 )';
		left: ~'calc( var(--padding-page ) * -1 )';
		z-index: -1;
		height: 100%;
		content: '';
		background-color: var( --color-surface-0 );
		filter: opacity( 0.9 );
		backdrop-filter: saturate( 50% ) blur( 16px );
	}
}

// To hide objects, but keep them accessible for screen-readers
// From https://www.a11yproject.com/posts/how-to-hide-content
.hidden() {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip: rect( 0 0 0 0 );
	clip-path: inset( 50% );
	white-space: nowrap;
}

// Set content to be at the center
.content-center() {
	max-width: var( --width-layout );
	margin-right: auto;
	margin-left: auto;
}

.resource-loader-icon() {
	position: absolute;
	width: inherit;
	height: inherit;
	content: '';
	background-repeat: no-repeat;
	background-position: center;
}

.resource-loader-menu-icon() {
	position: absolute;
	width: @icon-box-size;
	height: @icon-box-size;
	content: '';
	background-repeat: no-repeat;
	background-position: center;
}

.resource-loader-list-icon() {
	position: relative;
	flex-shrink: 0;
	align-self: center;
	width: @icon-size;
	height: @icon-size;
	content: '';
	background-repeat: no-repeat;
	background-position: center;
	background-size: contain;
}

// Button Styles
.button-blue() {
	color: var( --color-inverted-primary ) !important;
	background-color: var( --color-primary );

	.citizen-ui-icon::before {
		filter: var( --filter-invert-primary );
		opacity: 1;
	}
}

.button-blue-hover() {
	background-color: var( --color-primary--hover );
}

.button-blue-active() {
	background-color: var( --color-primary--active );
}

.button-red() {
	color: var( --color-inverted-fixed ) !important;
	background-color: var( --color-destructive );

	.citizen-ui-icon::before {
		filter: var( --filter-invert-fixed );
		opacity: 1;
	}
}

.button-red-hover() {
	background-color: var( --color-destructive--hover );
}

.button-red-active() {
	background-color: var( --color-destructive--active );
}

// Transform black into given color
// From https://stackoverflow.com/a/73390109/10624167
.recolor( @color ) {
	@r: red( @color ) / 255;
	@g: green( @color ) / 255;
	@b: blue( @color ) / 255;
	@a: alpha( @color );

	// grayscale fallback if SVG from data url is not supported
	@lightness: lightness( @color );
	filter: saturate( 0% ) brightness( 0% ) invert( @lightness ) opacity( @a );

	// color filter
	@svg-filter-id: "recolor";
	filter: url( ';data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"><filter id="@{svg-filter-id}" color-interpolation-filters="sRGB"><feColorMatrix type="matrix" values="0 0 0 0 @{r} 0 0 0 0 @{g} 0 0 0 0 @{b} 0 0 0 @{a} 0"/></filter></svg> #@{svg-filter-id}' );
}