Sass tooltip mixin

gistfile1.txt

/*
* SCSS Tooltips
* By David Tintner & Hacking UI
* http://hackingui.com
*
* $direction: ne, nw, se, sw. relative to the element the tooltip is on
* $bg-color: any CSS valid color string, will be applied as bg color of tooltip
* Content for tooltip comes from data-tooltip attribute on element
*/


/*
* Triangle
* Copied from UtilityBelt- https://github.com/dmtintner/UtilityBelt
*/
@mixin triangle($direction, $size: 8px, $color: #222){
  content: '';
  display: block;
  position: absolute;
  height: 0; width: 0;
  @if ($direction == 'up'){
    border-bottom: $size solid $color;
    border-left: $size solid transparent;
    border-right: $size solid transparent;
    border-top: none;
  }
  @else if ($direction == 'down'){
    border-top: $size solid $color;
    border-left: $size solid transparent;
    border-right: $size solid transparent;
    border-bottom: none;
  }
  @else if ($direction == 'left'){
    border-top: $size solid transparent;
    border-bottom: $size solid transparent;
    border-right: $size solid $color;
    border-left: none;
  }
  @else if ($direction == 'right'){
    border-top: $size solid transparent;
    border-bottom: $size solid transparent;
    border-left: $size solid $color;
    border-right: none;
  }
}


/*
* Respond To
* Copied from UtilityBelt- https://github.com/dmtintner/UtilityBelt
*/
$smartphone: 480px;
$tabletPortrait: 767px;
$tabletLandscape: 1024px;
$desktop: 1174px;
$largeScreen: 1400px;
@mixin respondTo($media) {
  @if $media == smartphone {
    @media (max-width: $smartphone) { @content; }
  }
  @else if $media == tablet {
    @media (min-width: $tabletPortrait) and (max-width: $tabletLandscape) { @content; }
  }
  @else if $media == smallScreen {
    @media (max-width: $desktop) { @content; }
  }
  @else if $media == desktop {
    @media (min-width: $desktop) { @content; }
  }
}


/*
* Where the magic happens
*/
@mixin tooltip($direction: nw, $bg-color: #000, $title: false) {
  // configuration variables
  $triangle-size: 6px; // = height of triangle, width is 2x
  $tooltip-width: 200px;
  $fade: 300ms;
  $white: #fff;
  $black: #000;

  position: relative; // can override this to absolute or fixed if necessary. Just can't be static

  &:before, &:after {
    opacity: 0;
    z-index: 98;
    @include transition(opacity $fade, visibility 0ms linear $fade); // delay visibility on fade out
    pointer-events: none;
    @include respondTo(smartphone){ display: none; }
  }
  &:before { // tooltip body
    content: attr(data-tooltip);
    position: absolute;
    width: $tooltip-width;
    padding: 10px 15px;
    line-height: 18px;
    text-align: left;
    font-size: 13px;
    font-weight: normal;
    white-space: normal;
    box-shadow: 1px 1px 3px rgba(0,0,0,0.3);
    border-radius: 3px;
    background-color: $bg-color;
    @if lightness($bg-color) < 50% { // dynamically determine light or dark color based on $bg-color
      color: $white;
    } @else {
      color: $black;
    }
  }
  &:after { content: ''; } // tooltip carrot

  // apply positioning to top and bottom values
  @if $direction == 'nw' or $direction == 'ne' {
    &:before {
      top: -($triangle-size + 3px); bottom: auto; // override with auto in case this tooltip is overriding a previous instance in another direction
      @include transform(translateY(-100%));
    }
    &:after {
      @include triangle(down, $triangle-size, $bg-color);
      top: -($triangle-size + 3px); bottom: auto;
    }
  }
  @else if $direction == 'se' or $direction == 'sw' {
    &:before {
      bottom: -($triangle-size + 3px); top: auto; // extra 3px for spacing
      @include transform(translateY(100%));
    }
    &:after {
      @include triangle(up, $triangle-size, $bg-color);
      bottom: -($triangle-size + 3px); top: auto;
    }
  }

  // apply positioning to left and right values
  @if $direction == 'ne' or $direction == 'se' {
    &:before, &:after {
      left: 50%; right: auto;
      margin-left: -$triangle-size;
    }
    &:before { margin-left: -$triangle-size * 3; }
  }
  @else if $direction == 'nw' or $direction == 'sw' {
    &:before, &:after {
      right: 50%; left: auto;
      margin-right: -$triangle-size;
    }
    &:before { margin-right: -$triangle-size * 3; }
  }
  @else { @warn 'direction not valid in tooltip mixin'; }


  &:hover {
    /* putting comment here so :hover is declared first by itself to fix ie10 bug with transitions on psuedo elements- http://css-tricks.com/pseudo-element-animationstransitions-bug-fixed-in-webkit/ */
    &:before, &:after {
      opacity: 1;
      pointer-events: all;
      @include transition-delay(0ms);
    }
  }
}


// Codepen only styles below
.tooltip-holder {
  text-align: center;
  font-family: arial, helvetica, sans-serif;
}
h1 { color: #2c3e50; }
.info-icon {
  display: inline-block;
  height: 50px;
  width: 50px;
  margin: 0 10px 10px 0;
  line-height: 50px;
  font-size: 1.5em;
  font-style: normal;
  text-align: center;
  border-radius: 50%;
  background:  #2785C0;
  color: #fff;
  &.ne { @include tooltip(ne, #2c3e50); }
  &.nw { @include tooltip(nw, #2c3e50); }
  &.se { @include tooltip(se, #2c3e50); }
  &.sw { @include tooltip(sw, #2c3e50); }
}