overleaf/services/web/frontend/stylesheets/core/mixins.less

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//
// 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.
.clearfix() {
&:before,
&:after {
content: ' '; // 1
display: table; // 2
}
&:after {
clear: both;
}
}
// WebKit-style focus
.tab-focus() when (@is-new-css = false) {
// Default
outline: thin dotted;
// WebKit
outline: 5px auto -webkit-focus-ring-color;
outline-offset: -2px;
}
.tab-focus() when (@is-new-css = true) {
outline: none;
}
// 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
opacity: 1;
} // See https://github.com/twbs/bootstrap/pull/11526
&:-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
//
// Heads up! v3 launched with with only `.hide-text()`, but per our pattern for
// mixins being reused as classes with the same name, this doesn't hold up. As
// of v3.0.1 we have added `.text-hide()` and deprecated `.hide-text()`. Note
// that we cannot chain the mixins together in Less, so they are repeated.
//
// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
// Deprecated as of v3.0.1 (will be removed in v4)
.hide-text() {
font: ~'0/0' a;
color: transparent;
text-shadow: none;
background-color: transparent;
border: 0;
}
// New mixin to use as of v3.0.1
.text-hide() {
.hide-text();
}
// 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
//
// Note: Deprecated `.box-shadow()` as of v3.1.0 since all of Bootstrap's
// supported browsers that have box shadow capabilities now support the
// standard `box-shadow` property.
.box-shadow(@shadow) {
-webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
box-shadow: @shadow;
}
.box-shadow-button-input() {
box-shadow: 0px 0px 0px 2px @blue-30;
}
// Transitions
.transition(@transition) {
-webkit-transition: @transition;
transition: @transition;
}
.transition-property(@transition-property) {
-webkit-transition-property: @transition-property;
transition-property: @transition-property;
}
.transition-delay(@transition-delay) {
-webkit-transition-delay: @transition-delay;
transition-delay: @transition-delay;
}
.transition-duration(@transition-duration) {
-webkit-transition-duration: @transition-duration;
transition-duration: @transition-duration;
}
.transition-transform(@transition) {
-webkit-transition: -webkit-transform @transition;
-moz-transition: -moz-transform @transition;
-o-transition: -o-transform @transition;
transition: transform @transition;
}
// Transformations
.rotate(@degrees) {
-webkit-transform: rotate(@degrees);
-ms-transform: rotate(@degrees); // IE9 only
transform: rotate(@degrees);
}
.scale(@ratio; @ratio-y...) {
-webkit-transform: scale(@ratio, @ratio-y);
-ms-transform: scale(@ratio, @ratio-y); // IE9 only
transform: scale(@ratio, @ratio-y);
}
.translate(@x; @y) {
-webkit-transform: translate(@x, @y);
-ms-transform: translate(@x, @y); // IE9 only
transform: translate(@x, @y);
}
.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);
}
.translate3d(@x; @y; @z) {
-webkit-transform: translate3d(@x, @y, @z);
transform: translate3d(@x, @y, @z);
}
.rotateX(@degrees) {
-webkit-transform: rotateX(@degrees);
-ms-transform: rotateX(@degrees); // IE9 only
transform: rotateX(@degrees);
}
.rotateY(@degrees) {
-webkit-transform: rotateY(@degrees);
-ms-transform: rotateY(@degrees); // IE9 only
transform: rotateY(@degrees);
}
.perspective(@perspective) {
-webkit-perspective: @perspective;
-moz-perspective: @perspective;
perspective: @perspective;
}
.perspective-origin(@perspective) {
-webkit-perspective-origin: @perspective;
-moz-perspective-origin: @perspective;
perspective-origin: @perspective;
}
.transform-origin(@origin) {
-webkit-transform-origin: @origin;
-moz-transform-origin: @origin;
-ms-transform-origin: @origin; // IE9 only
transform-origin: @origin;
}
// Animations
.animation(@animation) {
-webkit-animation: @animation;
animation: @animation;
}
.animation-name(@name) {
-webkit-animation-name: @name;
animation-name: @name;
}
.animation-duration(@duration) {
-webkit-animation-duration: @duration;
animation-duration: @duration;
}
.animation-timing-function(@timing-function) {
-webkit-animation-timing-function: @timing-function;
animation-timing-function: @timing-function;
}
.animation-delay(@delay) {
-webkit-animation-delay: @delay;
animation-delay: @delay;
}
.animation-iteration-count(@iteration-count) {
-webkit-animation-iteration-count: @iteration-count;
animation-iteration-count: @iteration-count;
}
.animation-direction(@direction) {
-webkit-animation-direction: @direction;
animation-direction: @direction;
}
// Backface visibility
// Prevent browsers from flickering when using CSS 3D transforms.
// Default value is `visible`, but can be changed to `hidden`
.backface-visibility(@visibility) {
-webkit-backface-visibility: @visibility;
-moz-backface-visibility: @visibility;
backface-visibility: @visibility;
}
// 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; // IE10+
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; // IE10+
-o-hyphens: @mode;
hyphens: @mode;
}
// Opacity
.opacity(@opacity) {
opacity: @opacity;
// IE8 filter
@opacity-ie: (@opacity * 100);
filter: ~'alpha(opacity=@{opacity-ie})';
}
// GRADIENTS
// --------------------------------------------------
#gradient {
// 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.
.horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(
left,
color-stop(@start-color @start-percent),
color-stop(@end-color @end-percent)
); // Safari 5.1-6, Chrome 10+
background-image: linear-gradient(
to right,
@start-color @start-percent,
@end-color @end-percent
); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
background-repeat: repeat-x;
filter: e(
%(
"progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",
argb(@start-color),
argb(@end-color)
)
); // 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.
.vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(
top,
@start-color @start-percent,
@end-color @end-percent
); // Safari 5.1-6, Chrome 10+
background-image: linear-gradient(
to bottom,
@start-color @start-percent,
@end-color @end-percent
); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
background-repeat: repeat-x;
filter: e(
%(
"progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",
argb(@start-color),
argb(@end-color)
)
); // IE9 and down
}
.directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
background-repeat: repeat-x;
background-image: -webkit-linear-gradient(
@deg,
@start-color,
@end-color
); // Safari 5.1-6, Chrome 10+
background-image: linear-gradient(
@deg,
@start-color,
@end-color
); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
}
.horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
background-image: -webkit-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: e(
%(
"progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",
argb(@start-color),
argb(@end-color)
)
); // IE9 and down, gets no color-stop at all for proper fallback
}
.vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
background-image: -webkit-linear-gradient(
@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: e(
%(
"progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",
argb(@start-color),
argb(@end-color)
)
); // IE9 and down, gets no color-stop at all for proper fallback
}
.radial(@inner-color: #555; @outer-color: #333) {
background-image: -webkit-radial-gradient(
circle,
@inner-color,
@outer-color
);
background-image: radial-gradient(circle, @inner-color, @outer-color);
background-repeat: no-repeat;
}
.striped(@color: rgba(255,255,255,0.15); @angle: 45deg) {
background-image: -webkit-linear-gradient(
@angle,
@color 25%,
transparent 25%,
transparent 50%,
@color 50%,
@color 75%,
transparent 75%,
transparent
);
background-image: linear-gradient(
@angle,
@color 25%,
transparent 25%,
transparent 50%,
@color 50%,
@color 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.
.reset-filter() {
filter: e(%('progid:DXImageTransform.Microsoft.gradient(enabled = false)'));
}
// Retina images
//
// Short retina mixin for setting background-image and -size
.img-retina(@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;
}
}
// Responsive image
//
// Keep images from scaling beyond the width of their parents.
.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
.nav-divider(@color: #e5e5e5) {
height: 1px;
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margin: @dropdown-divider-margin;
overflow: hidden;
background-color: @color;
}
// Panels
// -------------------------
.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
// -------------------------
.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%);
}
.alert-link-as-btn {
display: inline-block;
font-weight: bold;
text-decoration: none;
.btn-alert-variant(@background);
.button-size(
@padding-xs-vertical; @padding-small-horizontal; @font-size-small;
@line-height-small; @btn-border-radius-small
);
&:hover {
text-decoration: none;
}
}
small,
.small {
color: @text-color;
}
}
.btn-alert-variant(@alert-bg) {
.button-variant(#fff, shade(@alert-bg, 15%), transparent);
border-radius: @btn-border-radius-base;
}
.btn-bordered() {
color: @content-primary;
background-color: @white;
border-color: @border-color-base;
border-width: @border-size;
&:hover {
background-color: @btn-secondary-hover-bg-color;
}
&:focus {
color: @content-primary;
outline: none;
}
&:focus-visible,
&:active {
.box-shadow-button-input();
outline: none;
}
&:hover,
&:focus-visible,
&:active {
color: @content-primary;
}
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus-visible,
&:active,
&.active {
background-color: @color-disabled;
border-color: @border-color-disabled;
color: @content-disabled;
}
}
}
.btn-borderless(@color: @white; @background: @brand-primary; @background-hover: @btn-primary-hover-bg-color) {
color: @color;
background-color: @background;
border-color: @background; // add a border that is same as background color so that the height matches the btn-bordered style
border-width: @border-size;
&:hover {
background-color: @background-hover;
border-color: @background-hover;
}
&:focus {
color: @color;
outline: none;
}
&:focus-visible,
&:active {
background-color: @background;
border-color: @background;
.box-shadow-button-input();
outline: none;
}
&:hover,
&:focus-visible,
&:active {
color: @color;
}
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus-visible,
&:active,
&.active {
background-color: @color-disabled;
border-color: @color-disabled;
color: @content-disabled;
}
}
}
// Tables
// -------------------------
.table-row-variant(@state; @background) {
// 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;
}
}
// 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,
&.@{state}:hover > th {
background-color: darken(@background, 5%);
}
}
}
// List Groups
// -------------------------
.list-group-item-variant(@state; @background; @color) {
.list-group-item-@{state} {
color: @color;
background-color: @background;
a& {
color: @color;
.list-group-item-heading {
color: inherit;
}
&:hover,
&:focus {
color: @color;
background-color: darken(@background, 5%);
}
&.active,
&.active:hover,
&.active:focus {
color: #fff;
background-color: @color;
border-color: @color;
}
}
}
}
// Button variants
// -------------------------
// Easily pump out default styles, as well as :hover, :focus, :active,
// and disabled options for all buttons
.alert-btn(@background) {
background-color: darken(@background, 16%);
&:hover,
&:focus,
&:active,
&.active,
&.checked,
.open .dropdown-toggle& {
background-color: darken(@background, 24%);
}
}
.button-variant(@color; @background; @border) {
color: @color;
background-color: @background;
border-color: @border;
.alert & {
.alert-btn(@background);
}
&:hover,
&:focus,
&:active,
&.active,
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&.checked,
.open .dropdown-toggle& {
color: @color;
background-color: darken(@background, 8%);
border-color: darken(@border, 12%);
}
&:active,
&.active,
.open .dropdown-toggle& {
background-image: none;
}
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus,
&:active,
&.active {
background-color: @background;
border-color: @border;
}
}
.badge {
color: @background;
background-color: @color;
}
}
.button-outline-variant(@color) {
color: @color;
background-color: transparent;
border-color: @color;
.alert & {
background-color: transparent;
}
&:hover,
&:focus,
&:active,
&.active,
&.checked,
.open .dropdown-toggle& {
color: @color;
background-color: transparent;
border-color: darken(@color, 12%);
.alert & {
background-color: transparent;
}
}
&:active,
&.active,
.open .dropdown-toggle& {
background-image: none;
}
&.disabled,
&[disabled],
fieldset[disabled] & {
&,
&:hover,
&:focus,
&:active,
&.active {
background-color: transparent;
border-color: @color;
}
}
.badge {
color: transparent;
background-color: @color;
}
}
// Button sizes
// -------------------------
.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius)
when(@is-new-css = false) {
// Remove 1px to make up for the extra px of border-bottom we've added
padding: @padding-vertical - 1 @padding-horizontal @padding-vertical;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
}
.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius)
when(@is-new-css = true) {
padding: @padding-vertical - @border-size @padding-horizontal;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
}
// Pagination
// -------------------------
.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 {
.border-left-radius(@border-radius);
}
}
&:last-child {
> a,
> span {
.border-right-radius(@border-radius);
}
}
}
}
// Labels
// -------------------------
.label-variant(@color) {
background-color: @color;
&[href] {
&:hover,
&:focus {
background-color: darken(@color, 10%);
}
}
}
// Contextual backgrounds
// -------------------------
.bg-variant(@color) {
background-color: @color;
a&:hover {
background-color: darken(@color, 10%);
}
}
// Typography
// -------------------------
.text-emphasis-variant(@color) {
color: @color;
a&:hover {
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.
.navbar-vertical-align(@element-height) {
margin-top: ((@navbar-height - @element-height) / 2);
margin-bottom: ((@navbar-height - @element-height) / 2);
}
// Progress bars
// -------------------------
.progress-bar-variant(@color) {
background-color: @color;
.progress-striped & {
#gradient > .striped();
}
}
// Responsive utilities
// -------------------------
// More easily include all the states for responsive-utilities.less.
.responsive-visibility() {
display: block !important;
table& {
display: table;
}
tr& {
display: table-row !important;
}
th&,
td& {
display: table-cell !important;
}
}
.responsive-invisibility() {
display: none !important;
}
// Grid System
// -----------
// Centered container element
.container-fixed() {
margin-right: auto;
margin-left: auto;
padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
&:extend(.clearfix all);
}
// Creates a wrapper for a series of columns
.make-row(@gutter: @grid-gutter-width) {
margin-left: (@gutter / -2);
margin-right: (@gutter / -2);
&:extend(.clearfix all);
}
// Generate the extra small columns
.make-xs-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
float: left;
width: percentage((@columns / @grid-columns));
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
}
.make-xs-column-offset(@columns) {
@media (min-width: @screen-xs-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-xs-column-push(@columns) {
@media (min-width: @screen-xs-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-xs-column-pull(@columns) {
@media (min-width: @screen-xs-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the small columns
.make-sm-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-sm-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-sm-column-offset(@columns) {
@media (min-width: @screen-sm-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-push(@columns) {
@media (min-width: @screen-sm-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-sm-column-pull(@columns) {
@media (min-width: @screen-sm-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the medium columns
.make-md-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-md-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-md-column-offset(@columns) {
@media (min-width: @screen-md-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-md-column-push(@columns) {
@media (min-width: @screen-md-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-md-column-pull(@columns) {
@media (min-width: @screen-md-min) {
right: percentage((@columns / @grid-columns));
}
}
// Generate the large columns
.make-lg-column(@columns; @gutter: @grid-gutter-width) {
position: relative;
min-height: 1px;
padding-left: (@gutter / 2);
padding-right: (@gutter / 2);
@media (min-width: @screen-lg-min) {
float: left;
width: percentage((@columns / @grid-columns));
}
}
.make-lg-column-offset(@columns) {
@media (min-width: @screen-lg-min) {
margin-left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-push(@columns) {
@media (min-width: @screen-lg-min) {
left: percentage((@columns / @grid-columns));
}
}
.make-lg-column-pull(@columns) {
@media (min-width: @screen-lg-min) {
right: percentage((@columns / @grid-columns));
}
}
// Framework grid generation
//
// Used only by Bootstrap to generate the correct number of grid classes given
// any value of `@grid-columns`.
.make-grid-columns() {
// Common styles for all sizes of grid columns, widths 1-12
.col(@index) when (@index = 1) {
// initial
@item: ~'.col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}';
.col((@index + 1), @item);
}
.col(@index, @list) when (@index =< @grid-columns) {
// general; "=<" isn't a typo
@item: ~'.col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}';
.col((@index + 1), ~'@{list}, @{item}');
}
.col(@index, @list) when (@index > @grid-columns) {
// terminal
@{list} {
position: relative;
// Prevent columns from collapsing when empty
min-height: 1px;
// Inner gutter via padding
padding-left: (@grid-gutter-width / 2);
padding-right: (@grid-gutter-width / 2);
}
}
.col(1); // kickstart it
}
.float-grid-columns(@class) {
.col(@index) when (@index = 1) {
// initial
@item: ~'.col-@{class}-@{index}';
.col((@index + 1), @item);
}
.col(@index, @list) when (@index =< @grid-columns) {
// general
@item: ~'.col-@{class}-@{index}';
.col((@index + 1), ~'@{list}, @{item}');
}
.col(@index, @list) when (@index > @grid-columns) {
// terminal
@{list} {
float: left;
}
}
.col(1); // kickstart it
}
.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
.col-@{class}-@{index} {
width: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = push) {
.col-@{class}-push-@{index} {
left: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = pull) {
.col-@{class}-pull-@{index} {
right: percentage((@index / @grid-columns));
}
}
.calc-grid-column(@index, @class, @type) when (@type = offset) {
.col-@{class}-offset-@{index} {
margin-left: percentage((@index / @grid-columns));
}
}
// Basic looping in LESS
.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
.calc-grid-column(@index, @class, @type);
// next iteration
.loop-grid-columns((@index - 1), @class, @type);
}
// Create grid for specific class
.make-grid(@class) {
.float-grid-columns(@class);
.loop-grid-columns(@grid-columns, @class, width);
.loop-grid-columns(@grid-columns, @class, pull);
.loop-grid-columns(@grid-columns, @class, push);
.loop-grid-columns(@grid-columns, @class, offset);
}
// Form validation states
//
// Used in forms.less to generate the form validation CSS for warnings, errors,
// and successes.
.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5)
when(@is-new-css = false) {
// Color the label and help text
.help-block,
.control-label,
.radio,
.checkbox,
.radio-inline,
.checkbox-inline {
color: @text-color;
}
// Set the border and box shadow on specific inputs to match
.form-control {
border-color: @border-color;
.box-shadow(
inset 0 1px 1px rgba(0, 0, 0, 0.075)
); // Redeclare so transitions work
&:focus {
border-color: darken(@border-color, 10%);
@shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
0 0 6px lighten(@border-color, 20%);
.box-shadow(@shadow);
}
}
// Set validation states also for addons
.input-group-addon {
color: @text-color;
border-color: @border-color;
background-color: @background-color;
}
// Optional feedback icon
.form-control-feedback {
color: @text-color;
}
}
.form-control-validation(@color) when(@is-new-css = true) {
color: @color;
// Color the label and help text
.help-block,
.control-label,
.radio,
.checkbox,
.radio-inline,
.checkbox-inline {
color: @color;
}
.form-control {
border-color: @color;
&:focus {
border-color: @input-border-focus;
}
}
// Optional feedback icon
.form-control-feedback {
color: @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.
.form-control-focus(@color: @input-border-focus) when (@is-new-css = false) {
@color-rgba: rgba(red(@color), green(@color), blue(@color), 0.6);
&:focus {
border-color: @color;
outline: 0;
.box-shadow(~'inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px @{color-rgba}');
}
}
.input-focus-style {
// need to define as class for recurly UI
border-color: @input-border-focus;
outline: 0;
.box-shadow-button-input();
}
.form-control-focus() when (@is-new-css = true) {
&:focus {
&:extend(.input-focus-style);
}
}
// Form control sizing
//
// Relative text size, padding, and border-radii changes for form controls. For
// horizontal sizing, wrap controls in the predefined grid classes. `<select>`
// element gets special love because it's special, and that's a fact!
.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
height: @input-height;
padding: @padding-vertical @padding-horizontal;
font-size: @font-size;
line-height: @line-height;
border-radius: @border-radius;
select& {
height: @input-height;
line-height: @input-height;
}
textarea&,
select[multiple]& {
height: auto;
}
}
.triangle(@_, @width, @height, @color) {
position: absolute;
border-color: transparent;
border-style: solid;
width: 0;
height: 0;
}
.triangle(top, @width, @height, @color) {
border-width: 0 @width / 2 @height @width / 2;
border-bottom-color: @color;
border-left-color: transparent;
border-right-color: transparent;
}
.triangle(bottom, @width, @height, @color) {
border-width: @height @width / 2 0 @width / 2;
border-top-color: @color;
border-left-color: transparent;
border-right-color: transparent;
}
.triangle(right, @width, @height, @color) {
border-width: @height / 2 0 @height / 2 @width;
border-left-color: @color;
border-top-color: transparent;
border-bottom-color: transparent;
}
.triangle(left, @width, @height, @color) {
border-width: @height / 2 @width @height / 2 0;
border-right-color: @color;
border-top-color: transparent;
border-bottom-color: transparent;
}
.no-outline-ring-on-click {
&:focus,
&:focus:active {
outline: 0;
}
}