pdf.js/web/pdf_viewer.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.
 */
@import url(text_layer_builder.css);
@import url(annotation_layer_builder.css);
@import url(xfa_layer_builder.css);
/* Ignored in GECKOVIEW builds: */
@import url(annotation_editor_layer_builder.css);

:root {
  --viewer-container-height: 0;
  --pdfViewer-padding-bottom: 0;
  --page-margin: 1px auto -8px;
  --page-border: 9px solid transparent;
  --spreadHorizontalWrapped-margin-LR: -3.5px;
  --loading-icon-delay: 400ms;
}

@media screen and (forced-colors: active) {
  :root {
    --pdfViewer-padding-bottom: 9px;
    --page-margin: 8px auto -1px;
    --page-border: 1px solid CanvasText;
    --spreadHorizontalWrapped-margin-LR: 3.5px;
  }
}

[data-main-rotation="90"] {
  transform: rotate(90deg) translateY(-100%);
}
[data-main-rotation="180"] {
  transform: rotate(180deg) translate(-100%, -100%);
}
[data-main-rotation="270"] {
  transform: rotate(270deg) translateX(-100%);
}

#hiddenCopyElement,
.hiddenCanvasElement {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  display: none;
}

.pdfViewer {
  /* Define this variable here and not in :root to avoid to reflow all the UI
     when scaling (see #15929). */
  --scale-factor: 1;

  padding-bottom: var(--pdfViewer-padding-bottom);

  --hcm-highlight-filter: none;
  @media screen and (forced-colors: active) {
    --hcm-highlight-filter: invert(100%);
  }
}

.pdfViewer .canvasWrapper {
  overflow: hidden;
  /* See  `width: inherit` comment in `.pdfViewer .page canvas[zooming]` for the reason
   * we use `inherit` and not `100%`. */
  width: inherit;
  height: 100%;
  z-index: 1;
}

.pdfViewer .page {
  direction: ltr;
  width: 816px;
  height: 1056px;
  margin: var(--page-margin);
  position: relative;
  overflow: visible;
  border: var(--page-border);
  background-clip: content-box;
  background-color: rgb(255 255 255);
}

.pdfViewer .dummyPage {
  position: relative;
  width: 0;
  height: var(--viewer-container-height);
}

.pdfViewer.noUserSelect {
  user-select: none;
}

/*#if GENERIC*/
.pdfViewer.removePageBorders .page {
  margin: 0 auto 10px;
  border: none;
}
/*#endif*/

/*#if COMPONENTS*/
.pdfViewer.singlePageView {
  display: inline-block;
}

.pdfViewer.singlePageView .page {
  margin: 0;
  border: none;
}
/*#endif*/

.pdfViewer:is(.scrollHorizontal, .scrollWrapped),
.spread {
  margin-inline: 3.5px;
  text-align: center;
}

.pdfViewer.scrollHorizontal,
.spread {
  white-space: nowrap;
}

/*#if GENERIC*/
.pdfViewer.removePageBorders,
/*#endif*/
.pdfViewer:is(.scrollHorizontal, .scrollWrapped) .spread {
  margin-inline: 0;
}

.spread :is(.page, .dummyPage),
.pdfViewer:is(.scrollHorizontal, .scrollWrapped) :is(.page, .spread) {
  display: inline-block;
  vertical-align: middle;
}

.spread .page,
.pdfViewer:is(.scrollHorizontal, .scrollWrapped) .page {
  margin-inline: var(--spreadHorizontalWrapped-margin-LR);
}

/*#if GENERIC*/
.pdfViewer.removePageBorders .spread .page,
.pdfViewer.removePageBorders:is(.scrollHorizontal, .scrollWrapped) .page {
  margin-inline: 5px;
}
/*#endif*/

.pdfViewer .page canvas {
  margin: 0;
  display: block;
}

.pdfViewer .page canvas .structTree {
  contain: strict;
}

.pdfViewer .page canvas[hidden] {
  display: none;
}

.pdfViewer .page canvas[zooming] {
  /* WebKit has a bug when rendering canvases that have their width defined as
   * relative to their container, and their parent is resized. This causes a
   * "tearing" effect when zooming in PDFs past a certain threshold, which
   * is devide-dependent but tends to be between 120% and 200%.
   *
   * The DOM structure around the canvas is as follows:
   *   div.pdfViewer [ --scale-factor: ...; ]
   *     > div.page [ width: round(var(--scale-factor) * ..., 1px); ]
   *       > div.canvasWrapper
   *         > canvas
   *
   * Setting `width: inherit` on the div.canvasWrapper and on the canvas is
   * equivalent to explicitly specifying the same `width` property in pixels
   * as in div.page, thus making Safari properly redraw the canvas on resize.
   *
   * See https://bugs.webkit.org/show_bug.cgi?id=267986 for more details
   * on the WebKit bug.
   */
  width: inherit;
  height: 100%;
}

.pdfViewer .page.loadingIcon::after {
  position: absolute;
  top: 0;
  left: 0;
  content: "";
  width: 100%;
  height: 100%;
  background: url("images/loading-icon.gif") center no-repeat;
  display: none;
  /* Using a delay with background-image doesn't work,
     consequently we use the display. */
  transition-property: display;
  transition-delay: var(--loading-icon-delay);
  z-index: 5;
  contain: strict;
}

.pdfViewer .page.loading::after {
  display: block;
}

.pdfViewer .page:not(.loading)::after {
  transition-property: none;
  display: none;
}

.pdfPresentationMode .pdfViewer {
  padding-bottom: 0;
}

.pdfPresentationMode .spread {
  margin: 0;
}

.pdfPresentationMode .pdfViewer .page {
  margin: 0 auto;
  border: 2px solid transparent;
}