pdf.js/web/text_layer_builder.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.
 */

:root {
  --highlight-bg-color: rgba(180, 0, 170, 1);
  --highlight-selected-bg-color: rgba(0, 100, 0, 1);
}

@media screen and (forced-colors: active) {
  :root {
    --highlight-bg-color: Highlight;
    --highlight-selected-bg-color: ButtonText;
  }
}

.textLayer {
  position: absolute;
  text-align: initial;
  inset: 0;
  overflow: hidden;
  opacity: 0.25;
  line-height: 1;
  text-size-adjust: none;
  forced-color-adjust: none;
  transform-origin: 0 0;
  z-index: 2;
}

.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: var(--highlight-bg-color);
  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: var(--highlight-selected-bg-color);
}

.textLayer ::selection {
  /*#if !MOZCENTRAL*/
  background: blue;
  /*#endif*/
  background: AccentColor;
}

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

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

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