Overleaf/services/web/frontend/stylesheets/app/editor/pdf.less

@stripe-width: 20px;
@keyframes pdf-toolbar-stripes {
  from {
    background-position: 0 0;
  }
  to {
    background-position: @stripe-width 0;
  }
}

.pdf .toolbar.toolbar-pdf {
  .toolbar-small-mixin;
  .toolbar-alt-mixin;
  padding-right: 5px;
  margin-left: 0;
  &.changes-to-autocompile {
    // prettier-ignore
    #gradient > .striped(@color: rgba(255, 255, 255, 0.1), @angle: -45deg);
    background-size: @stripe-width @stripe-width;
    .animation(pdf-toolbar-stripes 2s linear infinite);
  }
  .auto-compile-status {
    color: white;
    margin-right: (@line-height-computed / 2);
    i {
      color: @brand-danger;
    }
  }
  .auto-compile-status when (@is-overleaf-light = true) {
    color: @ol-blue-gray-3;
  }
}

.pdf .toolbar.toolbar-pdf when (@is-overleaf-light = false) {
  border-bottom: 0;
}

.toolbar-pdf-left,
.toolbar-pdf-right {
  display: flex;
  align-items: center;
  align-self: stretch;
  flex: 1 1 100%;
}

.toolbar-pdf-right {
  flex: 1 0 auto;
}

.btn-toggle-logs {
  &:focus,
  &:active:focus {
    outline: none;
  }
}
.btn-toggle-logs-label {
  padding-left: @line-height-computed / 4;
}

.toolbar-pdf-hybrid {
  .btn:not(.btn-recompile) {
    display: inline-block;
    color: @toolbar-btn-color;
    background-color: transparent;
    padding: 4px 2px;
    line-height: 1;
    height: 24px;
    border-radius: 2px;

    &:hover,
    &:active,
    &:focus {
      color: @toolbar-btn-color;
    }

    .label {
      position: absolute;
      top: 0;
      right: 0;
      padding: 0.15em 0.6em 0.2em;
      font-size: 60%;
      pointer-events: none;
    }

    .btn {
      display: inline-block;
      color: #fff;
      background-color: transparent;
      padding: 4px 2px;
      line-height: 1;
      height: 24px;
      border-radius: 2px;
    }

    &.log-btn {
      margin-right: 3px;

      &.active {
        color: white;
        background-color: @link-color;
        box-shadow: @toolbar-icon-btn-hover-boxshadow;

        &:hover {
          color: white;
        }
      }

      &:focus {
        outline: none;
      }
    }
  }

  .btn-recompile {
    padding-top: 2px;
  }
}

.pdf {
  background-color: @pdf-bg;
}

.pdf-viewer,
.pdf-logs,
.pdf-errors,
.pdf-uncompiled {
  .full-size;
  top: @pdf-top-offset;
}

.pdf-logs,
.pdf-errors,
.pdf-uncompiled,
.pdf-validation-problems {
  padding: @line-height-computed / 2;
}

.pdf-uncompiled {
  .fa {
    color: @blue;
  }
}

.btn-recompile-group {
  align-self: stretch;
  margin-right: 6px;
  border-radius: 0 @btn-border-radius-base @btn-border-radius-base 0;
  background-color: @btn-primary-bg;
  &.btn-recompile-group-has-changes {
    // prettier-ignore
    #gradient > .striped(@color: rgba(255, 255, 255, 0.2), @angle: -45deg);
    background-size: @stripe-width @stripe-width;
    .animation(pdf-toolbar-stripes 2s linear infinite);
  }
}

.btn-recompile {
  height: 100%;
  // .btn-primary;
  color: #fff;
  background-color: transparent;
  padding-top: 3px;
  padding-bottom: 3px;
  &:first-child {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }
  &[disabled] {
    background-color: mix(@btn-primary-bg, @toolbar-alt-bg-color, 65%);
    .opacity(1);
  }
}

.btn-recompile-label {
  margin-left: @line-height-computed / 4;
}

.toolbar-text {
  padding-left: @padding-xs;
}

.pdf-viewer {
  iframe {
    width: 100%;
    height: 100%;
    border: none;
  }
  .pdfjs-viewer {
    .full-size;
    background-color: @pdfjs-bg;
    overflow: scroll;
    canvas,
    div.pdf-canvas {
      background: white;
      box-shadow: @pdf-page-shadow-color 0px 0px 10px;
    }
    div.pdf-canvas.pdfng-empty {
      background-color: white;
    }
    div.pdf-canvas.pdfng-loading {
      background-color: white;
    }
    .page-container {
      margin: 10px auto;
      padding: 0 10px;
      box-sizing: content-box;
      user-select: none;
    }
    .page {
      box-sizing: content-box;
      margin-left: auto;
      margin-right: auto;
    }
    .pdfjs-viewer-inner {
      position: absolute;
      overflow: auto;
      width: 100%;
      height: 100%;
      -webkit-font-smoothing: initial;
      -moz-osx-font-smoothing: initial;
    }
    &:focus-within {
      outline: none;
    }
    /* Avoids https://github.com/mozilla/pdf.js/issues/13840 in Chrome */
    .textLayer br::selection {
      background: transparent;
    }
  }
  .progress-thin {
    position: absolute;
    top: -2px;
    height: 3px;
    left: 0;
    right: 0;
    .progress-bar {
      height: 100%;
      background-color: @link-color;
    }
  }
  .pdfjs-controls {
    position: absolute;
    padding: @line-height-computed / 2;
    top: 0;
    left: 0;
    display: inline-block;
    .btn-group {
      transition: opacity 0.5s ease, visibility 0 linear 0.5s;
      visibility: hidden;
      opacity: 0;
    }
    &:hover,
    &.flash {
      .btn-group {
        transition: none;
        visibility: visible;
        opacity: 1;
      }
    }
    i.fa-arrows-h {
      border-right: 2px solid white;
      border-left: 2px solid white;
    }
    i.fa-arrows-v {
      border-top: 2px solid white;
      border-bottom: 2px solid white;
    }
  }
}

// The new viewer UI has overflow on the inner element,
// so disable the overflow on the outer element
.pdf-viewer .pdfjs-viewer.pdfjs-viewer-outer {
  overflow: hidden;
}

.pdf-logs {
  overflow: auto;
  .alert {
    font-size: 0.9rem;
    margin-bottom: @line-height-computed / 2;
    cursor: pointer;
    .line-no {
      float: right;
      color: @log-line-no-color;
      font-weight: 700;

      .fa {
        opacity: 0;
      }
    }
    .entry-message {
      font-weight: 700;
      //font-family: @font-family-monospace;
    }
    .entry-content {
      white-space: pre-wrap;
      font-size: 0.8rem;
      //font-family: @font-family-monospace;
    }

    &:hover .line-no {
      color: inherit;
      .fa {
        opacity: 1;
      }
    }

    &.alert-danger {
      background-color: tint(@alert-danger-bg, 15%);
      &:hover {
        background-color: @alert-danger-bg;
      }
    }

    &.alert-warning {
      background-color: tint(@alert-warning-bg, 15%);
      &:hover {
        background-color: @alert-warning-bg;
      }
    }

    &.alert-info {
      background-color: tint(@alert-info-bg, 15%);
      &:hover {
        background-color: @alert-info-bg;
      }
    }
  }
  pre {
    font-size: 12px;
    white-space: pre-wrap;
  }
  .dropdown {
    position: relative;
  }
  .force-recompile {
    margin-top: 10px;
    text-align: right;
  }
}

.synctex-controls {
  margin-right: -8px;
  position: absolute;
  z-index: @synctex-controls-z-index;
  padding: @synctex-controls-padding;
  top: 68px;
}

.synctex-control {
  @ol-synctex-control-size: 24px;
  align-items: center;
  display: flex;
  justify-content: center;
  font-size: 1em;
  margin-bottom: @ol-synctex-control-size / 2;
  width: @ol-synctex-control-size;
  height: @ol-synctex-control-size;
  border-radius: @ol-synctex-control-size / 2;
  padding: 0 0 2px;
  background-color: fade(@btn-default-bg, 80%);
  transition: background 0.15s ease;

  &:focus:not(:focus-visible) {
    outline: none;
  }

  &[disabled] {
    opacity: 1;
    background-color: fade(@btn-default-bg, 60%);
  }

  > .synctex-control-icon {
    display: inline-block;
    font: normal normal normal 14px/1 FontAwesome;
    font-size: inherit;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  > .synctex-spin-icon {
    margin-top: 2px;
  }
}

.synctex-control-goto-pdf > .synctex-control-icon {
  text-indent: 1px; // "Optical" adjustment.
  &::before {
    content: '\f061';
  }
}
.synctex-control-goto-code > .synctex-control-icon {
  text-indent: -1px; // "Optical" adjustment.
  &::before {
    content: '\f060';
  }
}

.editor-dark {
  .pdf-logs {
    background-color: lighten(@editor-dark-background-color, 10%);
  }
  .pdfjs-viewer {
    background-color: lighten(@editor-dark-background-color, 10%);
  }
  .pdf .toolbar {
    .toolbar-right a {
      i {
        border-color: @gray;
      }
      &:hover {
        i {
          border-color: @gray-light;
        }
      }
    }
  }
}

.keyboard-tooltip {
  .tooltip-inner {
    max-width: none;
  }
}

.keyboard-shortcut {
  white-space: nowrap;
}

@keyframes expand-feedback-area {
  from {
    max-height: 0;
  }

  to {
    max-height: 500px;
  }
}

.card-hint:extend(.card-thin) {
  margin-top: 10px;
  padding-bottom: 7px;
  cursor: default;

  &-icon-container {
    background: currentColor;
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.5rem;
    text-align: center;
    border-radius: 50%;
    float: left;
    margin-right: 10px;

    .fa {
      color: #fff;
    }

    .alert-danger & {
      color: @state-danger-border;
    }

    .alert-warning & {
      color: @state-warning-border;
    }

    .alert-info & {
      color: @state-info-border;
    }
  }

  &-text,
  &-feedback-label {
    color: @log-hints-color;
    font-size: 0.9rem;
    margin-bottom: 20px;
  }

  &-text {
    min-height: 35px;
  }

  &-feedback-label {
    font-size: inherit;
    margin-right: 0.5em;
    margin-bottom: 0;
    font-weight: normal;
  }

  &-ext-link,
  &-feedback {
    display: inline-block;
    font-size: 0.8rem;
  }

  &-footer a,
  &-text a {
    .alert-danger & {
      color: @state-danger-text;
    }

    .alert-warning & {
      color: @state-warning-text;
    }

    .alert-info & {
      color: @state-info-text;
    }
  }

  &-feedback {
    color: @log-hints-color;
    float: right;
  }

  &-extra-feedback {
    color: @log-hints-color;
    font-size: 0.8rem;
    margin-top: 10px;
    padding-bottom: 5px;
    animation: 0.5s ease-out expand-feedback-area;
    overflow: hidden;

    &-label {
      margin: 5px 0 10px;
      padding-top: 5px;
      border-top: solid 1px @gray-lighter;
    }

    .radio {
      margin: 5px;
    }

    textarea {
      font-size: 0.8rem;
      margin-bottom: 10px;
      padding: 5px;
    }

    input[type='radio'] {
      margin-top: 2px;
    }
  }

  & + p {
    margin-top: 20px;
  }
}

.files-dropdown-container {
  .pull-right();
  position: relative;
}

.files-dropdown {
  display: inline-block;
}

.plv-text-layer {
  display: none;
  user-select: text;

  .pdf-page-container:hover &,
  .pdfjs-viewer-show-text & {
    display: block;
  }
}

@editor-and-logs-pane-toolbars-height: @toolbar-small-height + @toolbar-height;
@btn-small-height: (@padding-small-vertical * 2)+ (@font-size-small *
      @line-height-small);

#download-dropdown-list,
#dropdown-files-logs-pane-list {
  overflow-y: auto;
  .dropdown-header {
    white-space: nowrap;
  }
}
#download-dropdown-list {
  max-height: calc(
    ~'100vh - ' @editor-and-logs-pane-toolbars-height ~' - ' @margin-md
  );
}
#dropdown-files-logs-pane-list {
  max-height: calc(
    ~'100vh - ' @editor-and-logs-pane-toolbars-height ~' - ' @btn-small-height ~' - '
      @margin-md
  );
}

.toolbar-pdf-expand-btn {
  .btn-inline-link;
  margin-left: @margin-xs;
  color: @toolbar-icon-btn-color;
  border-radius: @border-radius-small;
  &:hover {
    color: @toolbar-icon-btn-hover-color;
  }
  &:active {
    background-color: @link-color;
    color: #fff;
  }
  &:focus {
    outline: 0;
    color: #fff;
  }
}

.pdf-error-alert {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: @pdf-bg;
  padding: @line-height-computed / 2;
}

.pdf-loading-spinner-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}