// // 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. .clear_float() { &:before, &:after { content: " "; /* 1 */ display: table; /* 2 */ } &:after { clear: both; } } // Webkit-style focus .tab-focus() { // Default outline: thin dotted #333; // Webkit outline: 5px auto -webkit-focus-ring-color; outline-offset: -2px; } // Center-align a block level element .center-block() { display: block; margin-left: auto; margin-right: auto; } // Sizing shortcuts .size(@width, @height) { width: @width; height: @height; } .square(@size) { .size(@size, @size); } // Placeholder text .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 .text-overflow() { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } // CSS image replacement // Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757 .hide-text() { font: 0/0 a; color: transparent; text-shadow: none; background-color: transparent; border: 0; } // CSS3 PROPERTIES // -------------------------------------------------- // Single side border-radius .border-top-radius(@radius) { border-top-right-radius: @radius; border-top-left-radius: @radius; } .border-right-radius(@radius) { border-bottom-right-radius: @radius; border-top-right-radius: @radius; } .border-bottom-radius(@radius) { border-bottom-right-radius: @radius; border-bottom-left-radius: @radius; } .border-left-radius(@radius) { border-bottom-left-radius: @radius; border-top-left-radius: @radius; } // Drop shadows .box-shadow(@shadow) { -webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1 box-shadow: @shadow; } // Transitions .transition(@transition) { -webkit-transition: @transition; -moz-transition: @transition; -o-transition: @transition; transition: @transition; } .transition-delay(@transition-delay) { -webkit-transition-delay: @transition-delay; -moz-transition-delay: @transition-delay; -o-transition-delay: @transition-delay; transition-delay: @transition-delay; } .transition-duration(@transition-duration) { -webkit-transition-duration: @transition-duration; -moz-transition-duration: @transition-duration; -o-transition-duration: @transition-duration; transition-duration: @transition-duration; } // Transformations .rotate(@degrees) { -webkit-transform: rotate(@degrees); -moz-transform: rotate(@degrees); -ms-transform: rotate(@degrees); -o-transform: rotate(@degrees); transform: rotate(@degrees); } .scale(@ratio) { -webkit-transform: scale(@ratio); -moz-transform: scale(@ratio); -ms-transform: scale(@ratio); -o-transform: scale(@ratio); transform: scale(@ratio); } .translate(@x, @y) { -webkit-transform: translate(@x, @y); -moz-transform: translate(@x, @y); -ms-transform: translate(@x, @y); -o-transform: translate(@x, @y); transform: translate(@x, @y); } .skew(@x, @y) { -webkit-transform: skew(@x, @y); -moz-transform: skew(@x, @y); -ms-transform: skewX(@x) skewY(@y); // See https://github.com/twitter/bootstrap/issues/4885 -o-transform: skew(@x, @y); transform: skew(@x, @y); -webkit-backface-visibility: hidden; // See https://github.com/twitter/bootstrap/issues/5319 } .translate3d(@x, @y, @z) { -webkit-transform: translate3d(@x, @y, @z); -moz-transform: translate3d(@x, @y, @z); -o-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 .backface-visibility(@visibility){ -webkit-backface-visibility: @visibility; -moz-backface-visibility: @visibility; backface-visibility: @visibility; } // Background clipping .background-clip(@clip) { -webkit-background-clip: @clip; -moz-background-clip: @clip; background-clip: @clip; } // Background sizing .background-size(@size) { -webkit-background-size: @size; -moz-background-size: @size; -o-background-size: @size; background-size: @size; } // Box sizing .box-sizing(@boxmodel) { -webkit-box-sizing: @boxmodel; -moz-box-sizing: @boxmodel; box-sizing: @boxmodel; } // User select // For selecting text on the page .user-select(@select) { -webkit-user-select: @select; -moz-user-select: @select; -ms-user-select: @select; -o-user-select: @select; user-select: @select; } // Resize anything .resizable(@direction) { resize: @direction; // Options: horizontal, vertical, both overflow: auto; // Safari fix } // CSS3 Content Columns .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 .hyphens(@mode: auto) { word-wrap: break-word; -webkit-hyphens: @mode; -moz-hyphens: @mode; -ms-hyphens: @mode; -o-hyphens: @mode; hyphens: @mode; } // Opacity .opacity(@opacity) { opacity: @opacity; // IE8 filter @opacity-ie: (@opacity * 100); filter: ~"alpha(opacity=@{opacity-ie})"; } // BACKGROUNDS // -------------------------------------------------- // Gradients #gradient { .horizontal(@startColor: #555, @endColor: #333) { background-color: @endColor; background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+ background-image: -webkit-gradient(linear, 0 0, 100% 0, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+ background-image: -webkit-linear-gradient(left, @startColor, @endColor); // Safari 5.1+, Chrome 10+ background-image: -o-linear-gradient(left, @startColor, @endColor); // Opera 11.10 background-image: linear-gradient(to right, @startColor, @endColor); // Standard, IE10 background-repeat: repeat-x; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@startColor),argb(@endColor))); // IE9 and down } .vertical(@startColor: #555, @endColor: #333) { background-color: @endColor; background-image: -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+ background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+ background-image: -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+ background-image: -o-linear-gradient(top, @startColor, @endColor); // Opera 11.10 background-image: linear-gradient(to bottom, @startColor, @endColor); // Standard, IE10 background-repeat: repeat-x; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down } .directional(@startColor: #555, @endColor: #333, @deg: 45deg) { background-color: @endColor; background-repeat: repeat-x; background-image: -moz-linear-gradient(@deg, @startColor, @endColor); // FF 3.6+ background-image: -webkit-linear-gradient(@deg, @startColor, @endColor); // Safari 5.1+, Chrome 10+ background-image: -o-linear-gradient(@deg, @startColor, @endColor); // Opera 11.10 background-image: linear-gradient(@deg, @startColor, @endColor); // Standard, IE10 } .horizontal-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 50%, @endColor: #c3325f) { background-color: mix(@midColor, @endColor, 80%); background-image: -webkit-gradient(left, linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor)); background-image: -webkit-linear-gradient(left, @startColor, @midColor @colorStop, @endColor); background-image: -moz-linear-gradient(left, @startColor, @midColor @colorStop, @endColor); background-image: -o-linear-gradient(left, @startColor, @midColor @colorStop, @endColor); background-image: linear-gradient(to right, @startColor, @midColor @colorStop, @endColor); background-repeat: no-repeat; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down, gets no color-stop at all for proper fallback } .vertical-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 50%, @endColor: #c3325f) { background-color: mix(@midColor, @endColor, 80%); background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor)); background-image: -webkit-linear-gradient(@startColor, @midColor @colorStop, @endColor); background-image: -moz-linear-gradient(top, @startColor, @midColor @colorStop, @endColor); background-image: -o-linear-gradient(@startColor, @midColor @colorStop, @endColor); background-image: linear-gradient(@startColor, @midColor @colorStop, @endColor); background-repeat: no-repeat; filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down, gets no color-stop at all for proper fallback } .radial(@innerColor: #555, @outerColor: #333) { background-color: @outerColor; background-image: -webkit-gradient(radial, center center, 0, center center, 460, from(@innerColor), to(@outerColor)); background-image: -webkit-radial-gradient(circle, @innerColor, @outerColor); background-image: -moz-radial-gradient(circle, @innerColor, @outerColor); background-image: -o-radial-gradient(circle, @innerColor, @outerColor); background-repeat: no-repeat; } .striped(@color: #555, @angle: 45deg) { background-color: @color; 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: -o-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 .reset-filter() { filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)")); } // RETINA IMAGE SUPPORT // -------------------------------------------------- // Short retina mixin for setting background-image and -size .retina-image(@file-1x, @file-2x, @width-1x, @height-1x) { background-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: url("@{file-2x}"); background-size: @width-1x @height-1x; } } // COMPONENT MIXINS // -------------------------------------------------- // Horizontal dividers // ------------------------- // Dividers (basically an hr) within dropdowns and nav lists .nav-divider(@top: #e5e5e5, @bottom: #fff) { height: 1px; margin: ((@line-height-base / 2) - 1) 0; overflow: hidden; background-color: @top; border-bottom: 1px solid @bottom; } // Button psuedo states // ------------------------- // Easily pump out default styles, as well as :hover, :focus, :active, // and disabled options for all buttons .btn-pseudo-states(@background, @border) { background-color: @background; border-color: @border; &:hover, &:focus, &:active, &.active { background-color: darken(@background, 5%); border-color: darken(@border, 10%); } &.disabled, &[disabled], fieldset[disabled] & { &:hover, &:focus, &:active, &.active { background-color: @background; border-color: @border } } } // Navbar vertical align // ------------------------- // Vertically center elements in the navbar. // Example: an element has a height of 30px, so write out `.navbarVerticalAlign(30px);` to calculate the appropriate top margin. .navbar-vertical-align(@element-height) { margin-top: ((@navbar-height - @element-height) / 2); margin-bottom: ((@navbar-height - @element-height) / 2); } // Grid System // ----------- // Centered container element .container-fixed() { margin-right: auto; margin-left: auto; .clear_float(); } // Make a grid // Creates a wrapper for a series of columns .make-row() { // Negative margin the row out to align the content of columns margin-left: (@grid-gutter-width / -2); margin-right: (@grid-gutter-width / -2); // Then clear the floated columns .clear_float(); } // Generate the columns .make-column(@columns) { @media (min-width: @grid-float-breakpoint) { float: left; // Calculate width based on number of columns available width: percentage(@columns / @grid-columns); } // Prevent columns from collapsing when empty min-height: 1px; // Set inner padding as gutters instead of margin padding-left: (@grid-gutter-width / 2); padding-right: (@grid-gutter-width / 2); } // Generate the column offsets .make-column-offset(@columns) { @media (min-width: @grid-float-breakpoint) { margin-left: percentage((@columns / @grid-columns)); } } .make-column-push(@columns) { @media (min-width: @grid-float-breakpoint) { left: percentage((@columns / @grid-columns)); } } .make-column-pull(@columns) { @media (min-width: @grid-float-breakpoint) { right: percentage((@columns / @grid-columns)); } } // The Grid .generate-grid-columns(@grid-columns) { // Default columns .col-span-X (@index) when (@index > 0) { .col-span-@{index} { .col-span-(@index); } .col-span-X((@index - 1)); } .col-span-X(0) {} // Offsets (gaps between columns) .col-offset-X (@index) when (@index > 0) { .col-offset-@{index} { .col-offset-(@index); } .col-offset-X((@index - 1)); } .col-offset-X (0) {} // Source ordering .col-push-X (@index) when (@index > 0) { .col-push-@{index} { .col-push-(@index); } .col-push-X((@index - 1)); } .col-push-X (0) {} // Source ordering .col-pull-X (@index) when (@index > 0) { .col-pull-@{index} { .col-pull-(@index); } .col-pull-X((@index - 1)); } .col-pull-X (0) {} // Apply the styles .col-span-(@columns) { width: percentage((@columns / @grid-columns)); } .col-offset-(@columns) { margin-left: percentage((@columns / @grid-columns)); } .col-push-(@columns) { left: percentage((@columns / @grid-columns)); } .col-pull-(@columns) { right: percentage((@columns / @grid-columns)); } // Generate .spanX and .offsetX .col-span-X(@grid-columns); .col-offset-X(@grid-columns); .col-push-X(@grid-columns); .col-pull-X(@grid-columns); } // Framework mixins // -------------------------------------------------- // Generate rem font-sizes with pixel fallbacks // By default uses `@font-size-base` with an initial value of 14 (1.4rem or 14px) .font-size(@font-size: @font-size-base) { @rem-size: (@font-size / 10); font-size: ~"@{font-size}px"; font-size: ~"@{rem-size}rem"; } // Generate form validation states .formFieldState(@text-color: #555, @border-color: #ccc, @background-color: #f5f5f5) { // Color the label text .control-label { color: @text-color; } // Set the border and box shadow on specific inputs to match .input-with-feedback { padding-right: 32px; // to account for the feedback icon border-color: @border-color; .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%); .box-shadow(@shadow); } } }