openproject/app/assets/stylesheets/content/_loading_indicator.sass

// Based on spinkit by Tobias Ahlin.
//
// The MIT License (MIT)
// Copyright (c) 2015 Tobias Ahlin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

.loading-indicator--background
  position: absolute
  top: 0
  left: 0
  right: 0
  bottom: 0
  @include varprop(background, loading-indicator-bg-color)
  @include varprop(opacity, loading-indicator-bg-opacity)
  z-index: 900

.loading-indicator
  margin: 80px auto
  width: 100px
  height: 50px
  text-align: center
  font-size: 10px

  [class^='block-']
    @include varprop(background-color, loading-indicator-spinner-color)
    height: 100%
    width: 6px
    display: inline-block
    animation: block-waveStretchDelay 1.2s infinite ease-in-out
  .block-1
    animation-delay: -1.2s
  .block-2
    animation-delay: -1.1s
  .block-3
    animation-delay: -1s
  .block-4
    animation-delay: -0.9s
  .block-5
    animation-delay: -0.8s


  &.-small
    height: 34px
    margin: 0
    text-align: left

    [class^='block-']
      width: 4px



@keyframes block-waveStretchDelay
  0%, 40%, 100%
    transform: scaleY(0.4)
  20%
    transform: scaleY(1)