// Common Less mixin library for MediaWiki // // By default the folder containing this file is included in $wgResourceLoaderLESSImportPaths, // which makes this file importable by all less files via `@import 'mediawiki.mixins';`. // // The mixins included below are considered a public interface for MediaWiki extensions. // The signatures of parametrized mixins should be kept as stable as possible. // // See for more information about how to write mixins. .background-image( @url ) { background-image: e( '/* @embed */' ) url( @url ); } // Deprecated in MW 1.27 .background-size( @width, @height ) { // Vendor prefix is added to support Android 2 -webkit-background-size: @width @height; background-size: @width @height; } .vertical-gradient( @startColor: gray, @endColor: white, @startPos: 0, @endPos: 100% ) { background-color: @endColor; background-image: -webkit-linear-gradient( top, @startColor @startPos, @endColor @endPos ); // Safari 5.1+, Chrome 10+ background-image: -moz-linear-gradient( top, @startColor @startPos, @endColor @endPos ); // Firefox 3.6+ background-image: linear-gradient( @startColor @startPos, @endColor @endPos ); // Standard } // SVG support using a transparent gradient to guarantee cross-browser // compatibility (browsers able to understand gradient syntax support also SVG). // http://pauginer.tumblr.com/post/36614680636/invisible-gradient-technique // // We do not embed the fallback image on the assumption that the gain for old browsers // is not worth the harm done to modern ones. .background-image-svg( @svg, @fallback ) { background-image: url( @fallback ); background-image: linear-gradient( transparent, transparent ), e( '/* @embed */' ) url( @svg ); } // Shorthand for background-image-svg. Use if your PNG and SVG have the same name // and only if you cannot use ResourceLoaderImage module for some particular reason. .background-image-svg-quick( @url ) { .background-image-svg( ~'@{url}.svg', ~'@{url}.png' ); } .list-style-image( @url ) { list-style-image: e( '/* @embed */' ) url( @url ); } .list-style-image-svg( @svg, @fallback ) { list-style-image: e( '/* @embed */' ) url( @svg ); /* Fallback to PNG bullet for IE 8 and below using CSS hack */ list-style-image: e( '/* @embed */' ) url( @fallback ) e( '\9' ); } .hyphens( @value: auto ) { & when ( @value = auto ){ // Legacy `word-wrap`; IE 6-11, Edge 12+, Firefox 3.5+, Chrome 4+, Safari 3.1+, // Opera 11.5+, iOS 3.2+, Android 2.1+ // `overflow-wrap` is W3 standard, but it doesn't seem as if browser vendors // will abandon `word-wrap` (it has wider support), therefore no duplication. word-wrap: break-word; } & when ( @value = none ) { word-wrap: normal; } // CSS3 hyphenation -webkit-hyphens: @value; // Safari 5.1+, iOS 4.3+ -moz-hyphens: @value; // Firefox 6-42 -ms-hyphens: @value; // IE 10-11, Edge 12+ hyphens: @value; // Firefox 43+, Chrome 55+, Android 62+, UC Browser 11.8+, Samsung 6.2+ } .transform( @value ) { -webkit-transform: @value; // Safari 3.1-8.0, iOS 3.2-8.4, Android 2.1-4.4.4 -moz-transform: @value; // Firefox 3.5-15 transform: @value; // Chrome 36+, Firefox 16+, IE 10+, Safari 9+, Opera 23+, iOS 9.2+, Android 5+ } .transition( @value ) { -webkit-transition: @value; // Safari 3.1-6.0, iOS 3.2-6.1, Android 2.1-4.3 -moz-transition: @value; // Firefox 4-15 transition: @value; // Chrome 26+, Firefox 16+, IE 10+, Safari 6.1+, Opera 12.1+, iOS 7+, Android 4.4+ } // Provide a hardware accelerated transform transition // We can't use `.transition()` because WebKit requires `-webkit-` prefix before `transform` // Example usage: `.transition-transform( 1s, opacity 2s );` // First parameter is additional options for `transform` transition commencing with // duration property @see https://www.w3.org/TR/css3-transitions/#transition-duration-property // and remaining parameters are additional transitions." .transition-transform( ... ) { -webkit-backface-visibility: hidden; // Older Webkit browsers: Promote element to a composite layer & involve the GPU -webkit-transition: -webkit-transform @arguments; // Safari 3.1-8, iOS 3.2-8.4, Android 2.1-4.4.4 -moz-transition: -moz-transform @arguments; // Firefox 4-15 for `-moz-transition` transition: transform @arguments; // Chrome 36+, Firefox 16+, IE 10+, Safari 9+, Opera 12.1+, iOS 9.2+, Android 36+ } .box-sizing( @value ) { -webkit-box-sizing: @value; // Safari 3.1-5.0, iOS 3.2-4.3, Android 2.1-3.0 -moz-box-sizing: @value; // Firefox 4-28, box-sizing: @value; // Chrome 10+, Firefox 29+, IE 8+, Safari 5.1+, Opera 10+, iOS 5+, Android 4+ } .box-shadow( @value ) { -webkit-box-shadow: @value; // Safari 3.1-5.0, iOS 3.2-4.3, Android 2.1-3.0 box-shadow: @value; // Chrome 10+, Firefox 4+, IE 9+, Safari 5.1+, Opera 11+, iOS 5+, Android 4+ } .column-count( @value ) { -webkit-column-count: @value; -moz-column-count: @value; column-count: @value; } .column-width( @value ) { -webkit-column-width: @value; // Chrome Any, Safari 3+, Opera 15+ -moz-column-width: @value; // Firefox 1.5+ column-width: @value; // IE 10+, Opera 11.1-12.1 } .column-break-inside-avoid() { -webkit-column-break-inside: avoid; // Chrome Any, Safari 3+, Opera 15+ page-break-inside: avoid; // Firefox 1.5+ break-inside: avoid-column; // IE 10+, Opera 11.1-12.1 } .flex-display( @display: flex ) { display: ~'-webkit-@{display}'; // iOS 6-, Safari 3.1-6 display: ~'-moz-@{display}'; // Firefox 21- display: ~'-ms-@{display}box'; // IE 10 display: @display; } .flex-wrap( @wrap: wrap ) { -webkit-flex-wrap: @wrap; // iOS 6-, Safari 3.1-6 -moz-flex-wrap: @wrap; // Firefox 21- -ms-flex-wrap: @wrap; // IE 10 flex-wrap: @wrap; } .flex( @grow: 1, @shrink: 1, @width: auto, @order: 1 ) { // For 2009/2012 spec alignment consistency with current default -webkit-box-pack: justify; // iOS 6-, Safari 3.1-6 -moz-box-pack: justify; // Firefox 21- -ms-flex-pack: justify; // IE 10 (2012 spec) justify-content: space-between; // Current default // 2009 spec only supports 'flexible' as opposed to grow (flexPositive) // and shrink (flexNegative); default to grow value -webkit-box-flex: @grow; // iOS 6-, Safari 3.1-6 -moz-box-flex: @grow; // Firefox 21- width: @width; // Fallback for flex-basis -ms-flex: @grow @shrink @width; // IE 10 flex: @grow @shrink @width; -webkit-box-ordinal-group: @order; // iOS 6-, Safari 3.1-6 -moz-box-ordinal-group: @order; // Firefox 21- -ms-flex-order: @order; // IE 10 order: @order; } /* stylelint-disable selector-no-vendor-prefix, at-rule-no-unknown */ .mixin-placeholder( @rules ) { // WebKit, Blink, Edge &::-webkit-input-placeholder { @rules(); } // Internet Explorer 10-11 &:-ms-input-placeholder { @rules(); } // Firefox 19- &::-moz-placeholder { @rules(); } // Firefox 4-18 &:-moz-placeholder { @rules(); } // W3C Standard Selectors Level 4 &::placeholder { @rules(); } } /* stylelint-enable selector-no-vendor-prefix, at-rule-no-unknown */ // Screen Reader Helper Mixin .mixin-screen-reader-text() { display: block; position: absolute !important; /* stylelint-disable-line declaration-no-important */ clip: rect( 1px, 1px, 1px, 1px ); width: 1px; height: 1px; margin: -1px; border: 0; padding: 0; overflow: hidden; }