joplin/packages/pdf-viewer/textLayer.css

/* Copyright 2014 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 .textLayer {
    position: absolute;
    text-align: initial;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    line-height: 1;
    text-size-adjust: none;
  }

  .textLayer span,
  .textLayer br {
    color: transparent;
    position: absolute;
    white-space: pre;
    cursor: text;
    transform-origin: 0% 0%;
  }

  /* Only necessary in Google Chrome, see issue 14205, and most unfortunately
   * the problem doesn't show up in "text" reference tests. */
  .textLayer span.markedContent {
    top: 0;
    height: 0;
  }

  .textLayer .highlight {
    margin: -1px;
    padding: 1px;
    background-color: rgba(180, 0, 170, 1);
    border-radius: 4px;
  }

  .textLayer .highlight.appended {
    position: initial;
  }

  .textLayer .highlight.begin {
    border-radius: 4px 0 0 4px;
  }

  .textLayer .highlight.end {
    border-radius: 0 4px 4px 0;
  }

  .textLayer .highlight.middle {
    border-radius: 0;
  }

  .textLayer .highlight.selected {
    background-color: rgba(0, 100, 0, 1);
  }

  /* Avoids https://github.com/mozilla/pdf.js/issues/13840 in Chrome */
  .textLayer br::selection {
    background: transparent;
  }

  .textLayer .endOfContent {
    display: block;
    position: absolute;
    left: 0;
    top: 100%;
    right: 0;
    bottom: 0;
    z-index: -1;
    cursor: default;
    user-select: none;
  }

  .textLayer .endOfContent.active {
    top: 0;
  }