gitlab-org--gitlab-foss/app/assets/stylesheets/framework/animations.scss

// This file is based off animate.css 3.5.1, available here:
// https://github.com/daneden/animate.css/blob/3.5.1/animate.css
//
// animate.css - http://daneden.me/animate
// Version - 3.5.1
// Licensed under the MIT license - http://opensource.org/licenses/MIT
//
// Copyright (c) 2016 Daniel Eden

.animated {
  @include webkit-prefix(animation-duration, 1s);
  @include webkit-prefix(animation-fill-mode, both);

  &.infinite {
    @include webkit-prefix(animation-iteration-count, infinite);
  }

  &.once {
    @include webkit-prefix(animation-iteration-count, 1);
  }

  &.hinge {
    @include webkit-prefix(animation-duration, 2s);
  }

  &.flipOutX,
  &.flipOutY,
  &.bounceIn,
  &.bounceOut {
    @include webkit-prefix(animation-duration, 0.75s);
  }

  &.short {
    @include webkit-prefix(animation-duration, 321ms);
    @include webkit-prefix(animation-fill-mode, none);
  }
}

@include keyframes(pulse) {
  from,
  to {
    @include webkit-prefix(transform, scale3d(1, 1, 1));
  }

  50% {
    @include webkit-prefix(transform, scale3d(1.05, 1.05, 1.05));
  }
}

.pulse {
  @include webkit-prefix(animation-name, pulse);
}

/*
* General hover animations
*/


// Sass multiple transitions mixin | https://gist.github.com/tobiasahlin/7a421fb9306a4f518aab
// Usage:   @include transition(width, height 0.3s ease-in-out);
// Output:  -webkit-transition(width 0.2s, height 0.3s ease-in-out);
//          transition(width 0.2s, height 0.3s ease-in-out);
//
// Pass in any number of transitions
@mixin transition($transitions...) {
  $unfolded-transitions: ();
  @each $transition in $transitions {
    $unfolded-transitions: append($unfolded-transitions, unfold-transition($transition), comma);
  }

  transition: $unfolded-transitions;
}

@mixin disable-all-animation {
  /*CSS transitions*/
  transition-property: none !important;
  /*CSS transforms*/
  transform: none !important;
  /*CSS animations*/
  animation: none !important;
}

@function unfold-transition ($transition) {
  // Default values
  $property: all;
  $duration: $general-hover-transition-duration;
  $easing: $general-hover-transition-curve; // Browser default is ease, which is what we want
  $delay: null; // Browser default is 0, which is what we want
  $default-properties: ($property, $duration, $easing, $delay);

  // Grab transition properties if they exist
  $unfolded-transition: ();
  @for $i from 1 through length($default-properties) {
    $p: null;
    @if $i <= length($transition) {
      $p: nth($transition, $i);
    } @else {
      $p: nth($default-properties, $i);
    }
    $unfolded-transition: append($unfolded-transition, $p);
  }

  @return $unfolded-transition;
}

.btn {
  @include transition(background-color, border-color, color, box-shadow);
}

.dropdown-menu-toggle,
.avatar-circle,
.header-user-avatar {
  @include transition(border-color);
}

.note-action-button,
.toolbar-btn,
.dropdown-toggle-caret {
  @include transition(color);
}

a {
  @include transition(background-color, color, border);
}

.stage-nav-item {
  @include transition(background-color, box-shadow);
}

.dropdown-menu a,
.dropdown-menu button,
.dropdown-menu-nav a {
  transition: none;
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn $fade-in-duration 1;
}

@keyframes fadeInHalf {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 0.5;
  }
}

.fade-in-half {
  animation: fadeInHalf $fade-in-duration 1;
}

@keyframes fadeInFull {
  0% {
    opacity: 0.5;
  }

  100% {
    opacity: 1;
  }
}

.fade-in-full {
  animation: fadeInFull $fade-in-duration 1;
}

.animation-container {
  height: 40px;
  overflow: hidden;

  &.animation-container-small {
    height: 12px;
  }

  &.animation-container-right {
    .skeleton-line-2 {
      left: 0;
      right: 150px;
    }
  }

  [class^='skeleton-line-'] {
    position: relative;
    background-color: $gray-100;
    height: 10px;
    overflow: hidden;

    &:not(:last-of-type) {
      margin-bottom: 4px;
    }

    &::after {
      content: ' ';
      display: block;
      animation: blockTextShine 1s linear infinite forwards;
      background-repeat: no-repeat;
      background-size: cover;
      background-image: linear-gradient(to right,
      $gray-100 0%,
      $gray-50 20%,
      $gray-100 40%,
      $gray-100 100%);
      height: 10px;
    }
  }
}

$skeleton-line-widths: (
  156px,
  235px,
  200px,
);

@for $count from 1 through length($skeleton-line-widths) {
  .skeleton-line-#{$count} {
    width: nth($skeleton-line-widths, $count);
  }
}

@keyframes blockTextShine {
  0% {
    transform: translateX(-468px);
  }

  100% {
    transform: translateX(468px);
  }
}

.slide-down-enter-active {
  transition: transform 0.2s;
}

.slide-down-enter,
.slide-down-leave-to {
  transform: translateY(-30%);
}

@keyframes spin {
  0% { transform: rotate(0deg);}
  100% { transform: rotate(360deg);}
}

/** COMMON ANIMATION CLASSES **/
.transform-origin-center { @include webkit-prefix(transform-origin, 50% 50%); }
.animate-n-spin { @include webkit-prefix(animation-name, spin); }
.animate-c-infinite { @include webkit-prefix(animation-iteration-count, infinite); }
.animate-t-linear { @include webkit-prefix(animation-timing-function, linear); }
.animate-d-1 { @include webkit-prefix(animation-duration, 1s); }
.animate-d-2 { @include webkit-prefix(animation-duration, 2s); }

/** COMPOSITE ANIMATION CLASSES **/
.gl-spinner {
  @include webkit-prefix(animation-name, spin);
  @include webkit-prefix(animation-iteration-count, infinite);
  @include webkit-prefix(animation-timing-function, linear);
  @include webkit-prefix(animation-duration, 1s);
  transform-origin: 50% 50%;
}