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twbs--bootstrap/less/mixins.less

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// Mixins.less
// Snippets of reusable CSS to develop faster and keep code readable
// -----------------------------------------------------------------
// UTILITY MIXINS
// --------------------------------------------------
// Clearfix
// --------
// For clearing floats like a boss h5bp.com/q
.clearfix() {
*zoom: 1;
&:before,
&:after {
display: table;
content: "";
}
&:after {
clear: both;
}
}
// Webkit-style focus
// ------------------
.tab-focus() {
// Default
outline: thin dotted;
// Webkit
outline: 5px auto -webkit-focus-ring-color;
outline-offset: -2px;
// Firefox
-moz-outline: 5px auto -moz-mac-focusring;
-moz-outline-radius: 6px;
-moz-outline-offset: 0;
}
// Center-align a block level element
// ----------------------------------
.center-block() {
display: block;
margin-left: auto;
margin-right: auto;
}
// IE7 inline-block
// ----------------
.ie7-inline-block() {
*display: inline; /* IE7 inline-block hack */
*zoom: 1;
}
// IE7 likes to collapse whitespace on either side of the inline-block elements.
// Ems because we're attempting to match the width of a space character. Left
// version is for form buttons, which typically come after other elements, and
// right version is for icons, which come before. Applying both is ok, but it will
// mean that space between those elements will be .6em (~2 space characters) in IE7,
// instead of the 1 space in other browsers.
.ie7-restore-left-whitespace() {
*margin-left: .3em;
&:first-child {
*margin-left: 0;
}
}
.ie7-restore-right-whitespace() {
*margin-right: .3em;
&:last-child {
*margin-left: 0;
}
}
// Sizing shortcuts
// -------------------------
.size(@height: 5px, @width: 5px) {
width: @width;
height: @height;
}
.square(@size: 5px) {
.size(@size, @size);
}
// Placeholder text
// -------------------------
.placeholder(@color: @placeholderText) {
:-moz-placeholder {
color: @color;
}
::-webkit-input-placeholder {
color: @color;
}
}
// FONTS
// --------------------------------------------------
#font {
#family {
.serif() {
font-family: Georgia, "Times New Roman", Times, serif;
}
.sans-serif() {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
.monospace() {
font-family: Menlo, Monaco, "Courier New", monospace;
}
}
.shorthand(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
font-size: @size;
font-weight: @weight;
line-height: @lineHeight;
}
.serif(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
#font > #family > .serif;
#font > .shorthand(@size, @weight, @lineHeight);
}
.sans-serif(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
#font > #family > .sans-serif;
#font > .shorthand(@size, @weight, @lineHeight);
}
.monospace(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
#font > #family > .monospace;
#font > .shorthand(@size, @weight, @lineHeight);
}
}
// GRID SYSTEM
// --------------------------------------------------
// Site container
// -------------------------
.container-fixed() {
width: @siteWidth;
margin-left: auto;
margin-right: auto;
.clearfix();
}
// Columns and offseting
// -------------------------
.columns(@columns: 1) {
width: (@gridColumnWidth * @columns) + (@gridGutterWidth * (@columns - 1));
}
.offset(@columns: 1) {
margin-left: (@gridColumnWidth * @columns) + (@gridGutterWidth * (@columns - 1)) + (@gridGutterWidth * 2);
}
// Necessary grid styles for every column to make them appear next to each other horizontally
.gridColumn() {
float: left;
margin-left: @gridGutterWidth;
}
// makeColumn can be used to mark any element (e.g., .content-primary) as a column without changing markup to .span something
.makeColumn(@columnSpan: 1) {
.gridColumn();
.columns(@columnSpan);
}
// CSS3 PROPERTIES
// --------------------------------------------------
// Border Radius
.border-radius(@radius: 5px) {
-webkit-border-radius: @radius;
-moz-border-radius: @radius;
border-radius: @radius;
}
// Drop shadows
.box-shadow(@shadow: 0 1px 3px rgba(0,0,0,.25)) {
-webkit-box-shadow: @shadow;
-moz-box-shadow: @shadow;
box-shadow: @shadow;
}
// Transitions
.transition(@transition) {
-webkit-transition: @transition;
-moz-transition: @transition;
-ms-transition: @transition;
-o-transition: @transition;
transition: @transition;
}
// 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: 0, @y: 0) {
-webkit-transform: translate(@x, @y);
-moz-transform: translate(@x, @y);
-ms-transform: translate(@x, @y);
-o-transform: translate(@x, @y);
transform: translate(@x, @y);
}
// Background clipping
// Heads up: FF 3.6 and under need "padding" instead of "padding-box"
.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;
-o-user-select: @select;
user-select: @select;
}
// Resize anything
.resizable(@direction: both) {
resize: @direction; // Options: horizontal, vertical, both
overflow: auto; // Safari fix
}
// CSS3 Content Columns
.content-columns(@columnCount, @columnGap: @gridColumnGutter) {
-webkit-column-count: @columnCount;
-moz-column-count: @columnCount;
column-count: @columnCount;
-webkit-column-gap: @columnGap;
-moz-column-gap: @columnGap;
column-gap: @columnGap;
}
// Opacity
.opacity(@opacity: 100) {
opacity: @opacity / 100;
filter: e(%("alpha(opacity=%d)", @opacity));
}
// BACKGROUNDS
// --------------------------------------------------
// Add an alphatransparency value to any background or border color (via Elyse Holladay)
#translucent {
.background(@color: @white, @alpha: 1) {
background-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
}
.border(@color: @white, @alpha: 1) {
border-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
.background-clip(padding-box);
}
}
// Gradient Bar Colors for buttons and alerts
.gradientBar(@primaryColor, @secondaryColor) {
#gradient > .vertical(@primaryColor, @secondaryColor);
border-color: @secondaryColor @secondaryColor darken(@secondaryColor, 15%);
border-color: rgba(0,0,0,.1) rgba(0,0,0,.1) fadein(rgba(0,0,0,.1), 15%);
}
// Gradients
#gradient {
.horizontal(@startColor: #555, @endColor: #333) {
background-color: @endColor;
background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+
background-image: -ms-linear-gradient(left, @startColor, @endColor); // IE10
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(left, @startColor, @endColor); // Le standard
background-repeat: repeat-x;
}
.vertical(@startColor: #555, @endColor: #333) {
background-color: mix(@startColor, @endColor, 60%);
background-image: -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+
background-image: -ms-linear-gradient(top, @startColor, @endColor); // IE10
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(top, @startColor, @endColor); // The standard
background-repeat: repeat-x;
}
.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: -ms-linear-gradient(@deg, @startColor, @endColor); // IE10
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); // The standard
}
.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: -ms-linear-gradient(@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;
}
.radial(@innerColor: #555, @outerColor: #333) {
background-color: @outsideColor;
background-image: -webkit-gradient(radial, center center, 0, center center, 460, from(@centerColor), to(@outsideColor));
background-image: -webkit-radial-gradient(circle, @centerColor, @outsideColor);
background-image: -moz-radial-gradient(circle, @centerColor, @outsideColor);
background-image: -ms-radial-gradient(circle, @centerColor, @outsideColor);
background-repeat: no-repeat;
// Opera cannot do radial gradients yet
}
.striped(@color, @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: -ms-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);
}
}
// Mixin for generating button backgrounds
// ---------------------------------------
.buttonBackground(@startColor, @endColor) {
// gradientBar will set the background to a pleasing blend of these, to support IE<=9
.gradientBar(@startColor, @endColor);
// in these cases the gradient won't cover the background, so we override
&:hover, &:active, &.active, &.disabled, &[disabled] {
background-color: @endColor;
}
// IE 7 + 8 can't handle box-shadow to show active, so we darken a bit ourselves
&:active,
&.active {
background-color: darken(@endColor, 10%) e("\9");
}
}
// COMPONENT MIXINS
// --------------------------------------------------
// POPOVER ARROWS
// -------------------------
// For tipsies and popovers
#popoverArrow {
.top(@arrowWidth: 5px) {
bottom: 0;
left: 50%;
margin-left: -@arrowWidth;
border-left: @arrowWidth solid transparent;
border-right: @arrowWidth solid transparent;
border-top: @arrowWidth solid @black;
}
.left(@arrowWidth: 5px) {
top: 50%;
right: 0;
margin-top: -@arrowWidth;
border-top: @arrowWidth solid transparent;
border-bottom: @arrowWidth solid transparent;
border-left: @arrowWidth solid @black;
}
.bottom(@arrowWidth: 5px) {
top: 0;
left: 50%;
margin-left: -@arrowWidth;
border-left: @arrowWidth solid transparent;
border-right: @arrowWidth solid transparent;
border-bottom: @arrowWidth solid @black;
}
.right(@arrowWidth: 5px) {
top: 50%;
left: 0;
margin-top: -@arrowWidth;
border-top: @arrowWidth solid transparent;
border-bottom: @arrowWidth solid transparent;
border-right: @arrowWidth solid @black;
}
}
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