mkdocs-material/src/assets/stylesheets/layout/_clipboard.scss

////
/// Copyright (c) 2016-2017 Martin Donath <martin.donath@squidfunk.com>
///
/// 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 NON-INFRINGEMENT. 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
////

$clip-btn-background: #C4C4C4;
$clip-tip-background: #404040;

// ----------------------------------------------------------------------------
// Rules
// ----------------------------------------------------------------------------
.md-typeset {

  // Render muted when hovering over code and
  // render fully when hovering over the button.
  .codehilite {
    &:hover {
      .clip-btn {
        transition: opacity 0.3s;
        opacity: 0.4;

        &:hover {
          transition: opacity 0.1s;
          background-color: $md-color-primary;
          opacity: 1;
        }
      }
    }
  }

  // Clipboard button object.
  .clip-btn {
    @include z-depth(2);

    display: inline-block;
    position: absolute;
    top: 0.2rem;
    right: 0.2rem;
    width: 3.2rem;
    height: 3.2rem;
    transition: opacity 0.3s;
    border-radius: 50%;
    background-color: $clip-btn-background;
    color: $md-color-white;
    cursor: pointer;
    opacity: 0;
    overflow: visible;

    .md-icon--clipboard {
      position: relative;
      top: 0.1rem;
      font-size: 1.8rem;
    }
  }

  // Tooltips for messages when a copy is successful or fails.
  // Render it to the left as somtimes it is in a code table which
  // cuts off the right, or on the edge of the screen with mobile.
  .clip-tip {
    &::after {
      position: absolute;
      top: 0.3rem;
      left: 0;
      padding: 0.6rem 1rem;
      transform: translateX(-112%) translateY(0);
      transition: opacity 0.2s;
      border-radius: 0.2rem;
      background: $clip-tip-background;
      color: $md-color-white;
      font-size: ms(-1);
      font-weight: 700;
      white-space: nowrap;
      content: attr(aria-label);
      opacity: 1;
      visibility: hidden;
    }

    &:hover {
      &::after {
        display: block;
        transform: translateX(-110%) translateY(0);
        opacity: 0.9;
        visibility: visible;
      }
    }
  }
}