// // Mixins // -------------------------------------------------- // Utilities // ------------------------- // Clearfix // Source: http://nicolasgallagher.com/micro-clearfix-hack/ // // For modern browsers // 1. The space content is one way to avoid an Opera bug when the // contenteditable attribute is included anywhere else in the document. // Otherwise it causes space to appear at the top and bottom of elements // that are clearfixed. // 2. The use of `table` rather than `block` is only necessary if using // `:before` to contain the top-margins of child elements. @mixin clearfix() { &:before, &:after { content: " "; /* 1 */ display: table; /* 2 */ } &:after { clear: both; } } // Webkit-style focus @mixin tab-focus() { // Default outline: thin dotted #333; // Webkit outline: 5px auto -webkit-focus-ring-color; outline-offset: -2px; } // Center-align a block level element @mixin center-block() { display: block; margin-left: auto; margin-right: auto; } // Sizing shortcuts @mixin size($width, $height) { width: $width; height: $height; } @mixin square($size) { @include size($size, $size); } // Placeholder text @mixin placeholder($color: $input-color-placeholder) { &:-moz-placeholder { color: $color; } // Firefox 4-18 &::-moz-placeholder { color: $color; } // Firefox 19+ &:-ms-input-placeholder { color: $color; } // Internet Explorer 10+ &::-webkit-input-placeholder { color: $color; } // Safari and Chrome } // Text overflow // Requires inline-block or block for proper styling @mixin text-overflow() { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } // CSS image replacement // Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757 @mixin hide-text() { font: #{0/0} a; color: transparent; text-shadow: none; background-color: transparent; border: 0; } // CSS3 PROPERTIES // -------------------------------------------------- // Single side border-radius @mixin border-top-radius($radius) { border-top-right-radius: $radius; border-top-left-radius: $radius; } @mixin border-right-radius($radius) { border-bottom-right-radius: $radius; border-top-right-radius: $radius; } @mixin border-bottom-radius($radius) { border-bottom-right-radius: $radius; border-bottom-left-radius: $radius; } @mixin border-left-radius($radius) { border-bottom-left-radius: $radius; border-top-left-radius: $radius; } // Drop shadows @mixin box-shadow($shadow...) { -webkit-box-shadow: $shadow; // iOS <4.3 & Android <4.1 box-shadow: $shadow; } // Transitions @mixin transition($transition...) { -webkit-transition: $transition; transition: $transition; } @mixin transition-delay($transition-delay) { -webkit-transition-delay: $transition-delay; transition-delay: $transition-delay; } @mixin transition-duration($transition-duration) { -webkit-transition-duration: $transition-duration; transition-duration: $transition-duration; } @mixin transition-transform($transition...) { -webkit-transition: -webkit-transform $transition; -moz-transition: -moz-transform $transition; -o-transition: -o-transform $transition; transition: transform $transition; } // Transformations @mixin rotate($degrees) { -webkit-transform: rotate($degrees); -ms-transform: rotate($degrees); // IE9+ transform: rotate($degrees); } @mixin scale($ratio) { -webkit-transform: scale($ratio); -ms-transform: scale($ratio); // IE9+ transform: scale($ratio); } @mixin translate($x, $y) { -webkit-transform: translate($x, $y); -ms-transform: translate($x, $y); // IE9+ transform: translate($x, $y); } @mixin skew($x, $y) { -webkit-transform: skew($x, $y); -ms-transform: skewX($x) skewY($y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+ transform: skew($x, $y); } @mixin translate3d($x, $y, $z) { -webkit-transform: translate3d($x, $y, $z); transform: translate3d($x, $y, $z); } // Backface visibility // Prevent browsers from flickering when using CSS 3D transforms. // Default value is `visible`, but can be changed to `hidden` // See git pull https://github.com/dannykeane/bootstrap.git backface-visibility for examples @mixin backface-visibility($visibility){ -webkit-backface-visibility: $visibility; -moz-backface-visibility: $visibility; backface-visibility: $visibility; } // Box sizing @mixin box-sizing($boxmodel) { -webkit-box-sizing: $boxmodel; -moz-box-sizing: $boxmodel; box-sizing: $boxmodel; } // User select // For selecting text on the page @mixin user-select($select) { -webkit-user-select: $select; -moz-user-select: $select; -ms-user-select: $select; // IE10+ -o-user-select: $select; user-select: $select; } // Resize anything @mixin resizable($direction) { resize: $direction; // Options: horizontal, vertical, both overflow: auto; // Safari fix } // CSS3 Content Columns @mixin content-columns($column-count, $column-gap: $grid-gutter-width) { -webkit-column-count: $column-count; -moz-column-count: $column-count; column-count: $column-count; -webkit-column-gap: $column-gap; -moz-column-gap: $column-gap; column-gap: $column-gap; } // Optional hyphenation @mixin hyphens($mode: auto) { word-wrap: break-word; -webkit-hyphens: $mode; -moz-hyphens: $mode; -ms-hyphens: $mode; // IE10+ -o-hyphens: $mode; hyphens: $mode; } // Opacity @mixin opacity($opacity) { opacity: $opacity; // IE8 filter $opacity-ie: ($opacity * 100); filter: #{alpha(opacity=$opacity-ie)}; } // GRADIENTS // -------------------------------------------------- // Horizontal gradient, from left to right // // Creates two color stops, start and end, by specifying a color and position for each color stop. // Color stops are not available in IE9 and below. @mixin gradient-horizontal($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) { background-image: -webkit-gradient(linear, $start-percent top, $end-percent top, from($start-color), to($end-color)); // Safari 4+, Chrome 2+ background-image: -webkit-linear-gradient(left, color-stop($start-color $start-percent), color-stop($end-color $end-percent)); // Safari 5.1+, Chrome 10+ background-image: -moz-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // FF 3.6+ background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent); // Standard, IE10 background-repeat: repeat-x; filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down } // Vertical gradient, from top to bottom // // Creates two color stops, start and end, by specifying a color and position for each color stop. // Color stops are not available in IE9 and below. @mixin gradient-vertical($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) { background-image: -webkit-gradient(linear, left $start-percent, left $end-percent, from($start-color), to($end-color)); // Safari 4+, Chrome 2+ background-image: -webkit-linear-gradient(top, $start-color, $start-percent, $end-color, $end-percent); // Safari 5.1+, Chrome 10+ background-image: -moz-linear-gradient(top, $start-color $start-percent, $end-color $end-percent); // FF 3.6+ background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent); // Standard, IE10 background-repeat: repeat-x; filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down } @mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) { background-repeat: repeat-x; background-image: -webkit-linear-gradient($deg, $start-color, $end-color); // Safari 5.1+, Chrome 10+ background-image: -moz-linear-gradient($deg, $start-color, $end-color); // FF 3.6+ background-image: linear-gradient($deg, $start-color, $end-color); // Standard, IE10 } @mixin gradient-horizontal-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) { background-image: -webkit-gradient(left, linear, 0 0, 0 100%, from($start-color), color-stop($color-stop, $mid-color), to($end-color)); background-image: -webkit-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color); background-image: -moz-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color); background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color); background-repeat: no-repeat; filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down, gets no color-stop at all for proper fallback } @mixin gradient-vertical-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) { background-image: -webkit-gradient(linear, 0 0, 0 100%, from($start-color), color-stop($color-stop, $mid-color), to($end-color)); background-image: -webkit-linear-gradient($start-color, $mid-color $color-stop, $end-color); background-image: -moz-linear-gradient(top, $start-color, $mid-color $color-stop, $end-color); background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color); background-repeat: no-repeat; filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback } @mixin gradient-radial($inner-color: #555, $outer-color: #333) { background-image: -webkit-gradient(radial, center center, 0, center center, 460, from($inner-color), to($outer-color)); background-image: -webkit-radial-gradient(circle, $inner-color, $outer-color); background-image: -moz-radial-gradient(circle, $inner-color, $outer-color); background-image: radial-gradient(circle, $inner-color, $outer-color); background-repeat: no-repeat; } @mixin gradient-striped($color: #555, $angle: 45deg) { background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, rgba(255,255,255,.15)), color-stop(.25, transparent), color-stop(.5, transparent), color-stop(.5, rgba(255,255,255,.15)), color-stop(.75, rgba(255,255,255,.15)), color-stop(.75, transparent), to(transparent)); background-image: -webkit-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); background-image: -moz-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); background-image: linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent); } // Reset filters for IE // // When you need to remove a gradient background, do not forget to use this to reset // the IE filter for IE9 and below. @mixin reset-filter() { filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); } // Retina images // // Short retina mixin for setting background-image and -size @mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) { background-image: image-url("#{$file-1x}"); @media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and ( min--moz-device-pixel-ratio: 2), only screen and ( -o-min-device-pixel-ratio: 2/1), only screen and ( min-device-pixel-ratio: 2), only screen and ( min-resolution: 192dpi), only screen and ( min-resolution: 2dppx) { background-image: image-url("#{$file-2x}"); background-size: $width-1x $height-1x; } } // Responsive image // // Keep images from scaling beyond the width of their parents. @mixin img-responsive($display: block) { display: $display; max-width: 100%; // Part 1: Set a maximum relative to the parent height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching } // COMPONENT MIXINS // -------------------------------------------------- // Horizontal dividers // ------------------------- // Dividers (basically an hr) within dropdowns and nav lists @mixin nav-divider($color: #e5e5e5) { height: 1px; margin: (($line-height-computed / 2) - 1) 0; overflow: hidden; background-color: $color; } // Panels // ------------------------- @mixin panel-variant($border, $heading-text-color, $heading-bg-color, $heading-border) { border-color: $border; & > .panel-heading { color: $heading-text-color; background-color: $heading-bg-color; border-color: $heading-border; + .panel-collapse .panel-body { border-top-color: $border; } } & > .panel-footer { + .panel-collapse .panel-body { border-bottom-color: $border; } } } // Alerts // ------------------------- @mixin alert-variant($background, $border, $text-color) { background-color: $background; border-color: $border; color: $text-color; hr { border-top-color: darken($border, 5%); } .alert-link { color: darken($text-color, 10%); } } // Tables // ------------------------- @mixin table-row-variant($state, $background, $border) { // Exact selectors below required to override `.table-striped` and prevent // inheritance to nested tables. .table > thead > tr, .table > tbody > tr, .table > tfoot > tr { > td.#{$state}, > th.#{$state}, &.#{$state} > td, &.#{$state} > th { background-color: $background; border-color: $border; } } // Hover states for `.table-hover` // Note: this is not available for cells or rows within `thead` or `tfoot`. .table-hover > tbody > tr { > td.#{$state}:hover, > th.#{$state}:hover, &.#{$state}:hover > td { background-color: darken($background, 5%); border-color: darken($border, 5%); } } } // Button variants // ------------------------- // Easily pump out default styles, as well as :hover, :focus, :active, // and disabled options for all buttons @mixin button-variant($color, $background, $border) { color: $color; background-color: $background; border-color: $border; &:hover, &:focus, &:active, &.active { color: $color; background-color: darken($background, 8%); border-color: darken($border, 12%); } .open & { &.dropdown-toggle { color: $color; background-color: darken($background, 8%); border-color: darken($border, 12%); } } &:active, &.active { background-image: none; } .open & { &.dropdown-toggle { background-image: none; } } &.disabled, &[disabled], fieldset[disabled] & { &, &:hover, &:focus, &:active, &.active { background-color: $background; border-color: $border } } } // Button sizes // ------------------------- @mixin button-size($padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) { padding: $padding-vertical $padding-horizontal; font-size: $font-size; line-height: $line-height; border-radius: $border-radius; } // Pagination // ------------------------- @mixin pagination-size($padding-vertical, $padding-horizontal, $font-size, $border-radius) { > li { > a, > span { padding: $padding-vertical $padding-horizontal; font-size: $font-size; } &:first-child { > a, > span { @include border-left-radius($border-radius); } } &:last-child { > a, > span { @include border-right-radius($border-radius); } } } } // Labels // ------------------------- @mixin label-variant($color) { background-color: $color; &[href] { &:hover, &:focus { background-color: darken($color, 10%); } } } // Navbar vertical align // ------------------------- // Vertically center elements in the navbar. // Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin. @mixin navbar-vertical-align($element-height) { margin-top: (($navbar-height - $element-height) / 2); margin-bottom: (($navbar-height - $element-height) / 2); } // Progress bars // ------------------------- @mixin progress-bar-variant($color) { background-color: $color; .progress-striped & { @include gradient-striped($color); } } // Responsive utilities // ------------------------- // More easily include all the states for responsive-utilities.less. // [converter] $parent hack @mixin responsive-visibility($parent) { #{$parent} { display: block !important; } tr#{$parent} { display: table-row !important; } th#{$parent}, td#{$parent} { display: table-cell !important; } } // [converter] $parent hack @mixin responsive-invisibility($parent) { #{$parent} { display: none !important; } tr#{$parent} { display: none !important; } th#{$parent}, td#{$parent} { display: none !important; } } // Grid System // ----------- // Centered container element @mixin container-fixed() { margin-right: auto; margin-left: auto; padding-left: ($grid-gutter-width / 2); padding-right: ($grid-gutter-width / 2); @include clearfix(); } // Creates a wrapper for a series of columns @mixin make-row($gutter: $grid-gutter-width) { margin-left: ($gutter / -2); margin-right: ($gutter / -2); @include clearfix(); } // Generate the extra small columns @mixin make-xs-column($columns, $gutter: $grid-gutter-width) { position: relative; float: left; width: percentage(($columns / $grid-columns)); // Prevent columns from collapsing when empty min-height: 1px; // Inner gutter via padding padding-left: ($gutter / 2); padding-right: ($gutter / 2); } // Generate the small columns @mixin make-sm-column($columns, $gutter: $grid-gutter-width) { position: relative; // Prevent columns from collapsing when empty min-height: 1px; // Inner gutter via padding padding-left: ($gutter / 2); padding-right: ($gutter / 2); // Calculate width based on number of columns available @media (min-width: $screen-sm) { float: left; width: percentage(($columns / $grid-columns)); } } // Generate the small column offsets @mixin make-sm-column-offset($columns) { @media (min-width: $screen-sm) { margin-left: percentage(($columns / $grid-columns)); } } @mixin make-sm-column-push($columns) { @media (min-width: $screen-sm) { left: percentage(($columns / $grid-columns)); } } @mixin make-sm-column-pull($columns) { @media (min-width: $screen-sm) { right: percentage(($columns / $grid-columns)); } } // Generate the medium columns @mixin make-md-column($columns, $gutter: $grid-gutter-width) { position: relative; // Prevent columns from collapsing when empty min-height: 1px; // Inner gutter via padding padding-left: ($gutter / 2); padding-right: ($gutter / 2); // Calculate width based on number of columns available @media (min-width: $screen-md) { float: left; width: percentage(($columns / $grid-columns)); } } // Generate the large column offsets @mixin make-md-column-offset($columns) { @media (min-width: $screen-md) { margin-left: percentage(($columns / $grid-columns)); } } @mixin make-md-column-push($columns) { @media (min-width: $screen-md) { left: percentage(($columns / $grid-columns)); } } @mixin make-md-column-pull($columns) { @media (min-width: $screen-md) { right: percentage(($columns / $grid-columns)); } } // Generate the large columns @mixin make-lg-column($columns, $gutter: $grid-gutter-width) { position: relative; // Prevent columns from collapsing when empty min-height: 1px; // Inner gutter via padding padding-left: ($gutter / 2); padding-right: ($gutter / 2); // Calculate width based on number of columns available @media (min-width: $screen-lg) { float: left; width: percentage(($columns / $grid-columns)); } } // Generate the large column offsets @mixin make-lg-column-offset($columns) { @media (min-width: $screen-lg) { margin-left: percentage(($columns / $grid-columns)); } } @mixin make-lg-column-push($columns) { @media (min-width: $screen-lg) { left: percentage(($columns / $grid-columns)); } } @mixin make-lg-column-pull($columns) { @media (min-width: $screen-lg) { right: percentage(($columns / $grid-columns)); } } // Form validation states // // Used in forms.less to generate the form validation CSS for warnings, errors, // and successes. @mixin form-control-validation($text-color: #555, $border-color: #ccc, $background-color: #f5f5f5) { // Color the label and help text .help-block, .control-label { color: $text-color; } // Set the border and box shadow on specific inputs to match .form-control { border-color: $border-color; @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work &:focus { border-color: darken($border-color, 10%); $shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($border-color, 20%); @include box-shadow($shadow); } } // Set validation states also for addons .input-group-addon { color: $text-color; border-color: $border-color; background-color: $background-color; } } // Form control focus state // // Generate a customized focus state and for any input with the specified color, // which defaults to the `$input-focus-border` variable. // // We highly encourage you to not customize the default value, but instead use // this to tweak colors on an as-needed basis. This aesthetic change is based on // WebKit's default styles, but applicable to a wider range of browsers. Its // usability and accessibility should be taken into account with any change. // // Example usage: change the default blue border and shadow to white for better // contrast against a dark gray background. @mixin form-control-focus($color: $input-border-focus) { $color-rgba: rgba(red($color), green($color), blue($color), .6); &:focus { border-color: $color; outline: 0; @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px $color-rgba); } } // Form control sizing // // Relative text size, padding, and border-radii changes for form controls. For // horizontal sizing, wrap controls in the predefined grid classes. `