pdf.js/web/annotation_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.
 */

.annotationLayer {
  --annotation-unfocused-field-background: url("data:image/svg+xml;charset=UTF-8,<svg width='1px' height='1px' xmlns='http://www.w3.org/2000/svg'><rect width='100%' height='100%' style='fill:rgba(0, 54, 255, 0.13);'/></svg>");
  --input-focus-border-color: Highlight;
  --input-focus-outline: 1px solid Canvas;
  --input-unfocused-border-color: transparent;
  --input-disabled-border-color: transparent;
  --input-hover-border-color: black;
  --link-outline: none;

  @media screen and (forced-colors: active) {
    --input-focus-border-color: CanvasText;
    --input-unfocused-border-color: ActiveText;
    --input-disabled-border-color: GrayText;
    --input-hover-border-color: Highlight;
    --link-outline: 1.5px solid LinkText;

    .textWidgetAnnotation :is(input, textarea):required,
    .choiceWidgetAnnotation select:required,
    .buttonWidgetAnnotation:is(.checkBox, .radioButton) input:required {
      outline: 1.5px solid selectedItem;
    }

    .linkAnnotation {
      outline: var(--link-outline);

      &:hover {
        backdrop-filter: var(--hcm-highlight-filter);
      }

      & > a:hover {
        opacity: 0 !important;
        background: none !important;
        box-shadow: none;
      }
    }

    .popupAnnotation .popup {
      outline: calc(1.5px * var(--scale-factor)) solid CanvasText !important;
      background-color: ButtonFace !important;
      color: ButtonText !important;
    }

    .highlightArea:hover::after {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      backdrop-filter: var(--hcm-highlight-filter);
      content: "";
      pointer-events: none;
    }

    .popupAnnotation.focused .popup {
      outline: calc(3px * var(--scale-factor)) solid Highlight !important;
    }
  }

  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  transform-origin: 0 0;

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

  &.disabled {
    section,
    .popup {
      pointer-events: none;
    }
  }

  .annotationContent {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;

    &.freetext {
      background: transparent;
      border: none;
      inset: 0;
      overflow: visible;
      white-space: nowrap;
      font: 10px sans-serif;
      line-height: 1.35;
      user-select: none;
    }
  }

  section {
    position: absolute;
    text-align: initial;
    pointer-events: auto;
    box-sizing: border-box;
    transform-origin: 0 0;

    &:has(div.annotationContent) {
      canvas.annotationContent {
        display: none;
      }
    }
  }

  .textLayer.selecting ~ & section {
    pointer-events: none;
  }

  :is(.linkAnnotation, .buttonWidgetAnnotation.pushButton) > a {
    position: absolute;
    font-size: 1em;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }

  :is(.linkAnnotation, .buttonWidgetAnnotation.pushButton):not(.hasBorder)
    > a:hover {
    opacity: 0.2;
    background-color: rgb(255 255 0);
    box-shadow: 0 2px 10px rgb(255 255 0);
  }

  .linkAnnotation.hasBorder:hover {
    background-color: rgb(255 255 0 / 0.2);
  }

  .hasBorder {
    background-size: 100% 100%;
  }

  .textAnnotation img {
    position: absolute;
    cursor: pointer;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
  }

  .textWidgetAnnotation :is(input, textarea),
  .choiceWidgetAnnotation select,
  .buttonWidgetAnnotation:is(.checkBox, .radioButton) input {
    background-image: var(--annotation-unfocused-field-background);
    border: 2px solid var(--input-unfocused-border-color);
    box-sizing: border-box;
    font: calc(9px * var(--scale-factor)) sans-serif;
    height: 100%;
    margin: 0;
    vertical-align: top;
    width: 100%;
  }

  .textWidgetAnnotation :is(input, textarea):required,
  .choiceWidgetAnnotation select:required,
  .buttonWidgetAnnotation:is(.checkBox, .radioButton) input:required {
    outline: 1.5px solid red;
  }

  .choiceWidgetAnnotation select option {
    padding: 0;
  }

  .buttonWidgetAnnotation.radioButton input {
    border-radius: 50%;
  }

  .textWidgetAnnotation textarea {
    resize: none;
  }

  .textWidgetAnnotation :is(input, textarea)[disabled],
  .choiceWidgetAnnotation select[disabled],
  .buttonWidgetAnnotation:is(.checkBox, .radioButton) input[disabled] {
    background: none;
    border: 2px solid var(--input-disabled-border-color);
    cursor: not-allowed;
  }

  .textWidgetAnnotation :is(input, textarea):hover,
  .choiceWidgetAnnotation select:hover,
  .buttonWidgetAnnotation:is(.checkBox, .radioButton) input:hover {
    border: 2px solid var(--input-hover-border-color);
  }
  .textWidgetAnnotation :is(input, textarea):hover,
  .choiceWidgetAnnotation select:hover,
  .buttonWidgetAnnotation.checkBox input:hover {
    border-radius: 2px;
  }

  .textWidgetAnnotation :is(input, textarea):focus,
  .choiceWidgetAnnotation select:focus {
    background: none;
    border: 2px solid var(--input-focus-border-color);
    border-radius: 2px;
    outline: var(--input-focus-outline);
  }

  .buttonWidgetAnnotation:is(.checkBox, .radioButton) :focus {
    background-image: none;
    background-color: transparent;
  }

  .buttonWidgetAnnotation.checkBox :focus {
    border: 2px solid var(--input-focus-border-color);
    border-radius: 2px;
    outline: var(--input-focus-outline);
  }

  .buttonWidgetAnnotation.radioButton :focus {
    border: 2px solid var(--input-focus-border-color);
    outline: var(--input-focus-outline);
  }

  .buttonWidgetAnnotation.checkBox input:checked::before,
  .buttonWidgetAnnotation.checkBox input:checked::after,
  .buttonWidgetAnnotation.radioButton input:checked::before {
    background-color: CanvasText;
    content: "";
    display: block;
    position: absolute;
  }

  .buttonWidgetAnnotation.checkBox input:checked::before,
  .buttonWidgetAnnotation.checkBox input:checked::after {
    height: 80%;
    left: 45%;
    width: 1px;
  }

  .buttonWidgetAnnotation.checkBox input:checked::before {
    transform: rotate(45deg);
  }

  .buttonWidgetAnnotation.checkBox input:checked::after {
    transform: rotate(-45deg);
  }

  .buttonWidgetAnnotation.radioButton input:checked::before {
    border-radius: 50%;
    height: 50%;
    left: 25%;
    top: 25%;
    width: 50%;
  }

  .textWidgetAnnotation input.comb {
    font-family: monospace;
    padding-left: 2px;
    padding-right: 0;
  }

  .textWidgetAnnotation input.comb:focus {
    /*
     * Letter spacing is placed on the right side of each character. Hence, the
     * letter spacing of the last character may be placed outside the visible
     * area, causing horizontal scrolling. We avoid this by extending the width
     * when the element has focus and revert this when it loses focus.
     */
    width: 103%;
  }

  .buttonWidgetAnnotation:is(.checkBox, .radioButton) input {
    appearance: none;
  }

  .fileAttachmentAnnotation .popupTriggerArea {
    height: 100%;
    width: 100%;
  }

  .popupAnnotation {
    position: absolute;
    font-size: calc(9px * var(--scale-factor));
    pointer-events: none;
    width: max-content;
    max-width: 45%;
    height: auto;
  }

  .popup {
    background-color: rgb(255 255 153);
    box-shadow: 0 calc(2px * var(--scale-factor))
      calc(5px * var(--scale-factor)) rgb(136 136 136);
    border-radius: calc(2px * var(--scale-factor));
    outline: 1.5px solid rgb(255 255 74);
    padding: calc(6px * var(--scale-factor));
    cursor: pointer;
    font: message-box;
    white-space: normal;
    word-wrap: break-word;
    pointer-events: auto;
  }

  .popupAnnotation.focused .popup {
    outline-width: 3px;
  }

  .popup * {
    font-size: calc(9px * var(--scale-factor));
  }

  .popup > .header {
    display: inline-block;
  }

  .popup > .header h1 {
    display: inline;
  }

  .popup > .header .popupDate {
    display: inline-block;
    margin-left: calc(5px * var(--scale-factor));
    width: fit-content;
  }

  .popupContent {
    border-top: 1px solid rgb(51 51 51);
    margin-top: calc(2px * var(--scale-factor));
    padding-top: calc(2px * var(--scale-factor));
  }

  .richText > * {
    white-space: pre-wrap;
    font-size: calc(9px * var(--scale-factor));
  }

  .popupTriggerArea {
    cursor: pointer;
  }

  section svg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
  }

  .annotationTextContent {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    color: transparent;
    user-select: none;
    pointer-events: none;

    span {
      width: 100%;
      display: inline-block;
    }
  }

  svg.quadrilateralsContainer {
    contain: strict;
    width: 0;
    height: 0;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
  }
}