ui/webui/resources/cr_elements/cr_slider/cr_slider.html

<link rel="import" href="../../html/polymer.html">

<link rel="import" href="chrome://resources/polymer/v1_0/paper-behaviors/paper-ripple-behavior.html">
<link rel="import" href="../../html/cr.html">
<link rel="import" href="../../html/event_tracker.html">
<link rel="import" href="../hidden_style_css.html">
<link rel="import" href="../shared_vars_css.html">

<dom-module id="cr-slider">
  <template>
    <style include="cr-hidden-style">
      :host {
        --cr-slider-active-color: var(--google-blue-600);
        --cr-slider-container-color: rgba(var(--google-blue-600-rgb), .24);
        --cr-slider-container-disabled-color:
            rgba(var(--google-grey-600-rgb), .24);
        --cr-slider-disabled-color: var(--google-grey-600);
        --cr-slider-knob-color: var(--google-blue-600);
        --cr-slider-knob-disabled-color: white;
        --cr-slider-marker-active-color: rgba(255, 255, 255, 0.54);
        --cr-slider-marker-color: rgba(26, 115, 232, 0.54);
        --cr-slider-marker-disabled-color: rgba(128, 134, 139, 0.54);
        --cr-slider-position-transition: 80ms ease;
        /* --cr-slider-ripple-opacity is left at default in light mode. */

        -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
        cursor: default;
        height: 32px;
        outline: none;
        padding: 0 16px;
        user-select: none;
      }

      @media (prefers-color-scheme: dark) {
        :host {
          --cr-slider-active-color: var(--google-blue-refresh-300);
          --cr-slider-container-color:
              rgba(var(--google-blue-refresh-500-rgb), .48);
          --cr-slider-container-disabled-color:
              rgba(var(--google-grey-600-rgb), .48);
          /* --cr-slider-disabled-color is the same in dark mode (GG600). */
          --cr-slider-knob-color: var(--google-blue-refresh-300);
          /* --google-grey-900 + 4% white blended together. */
          --cr-slider-knob-disabled-color: #28292c;
          --cr-slider-marker-active-color: var(--google-blue-refresh-300);
          --cr-slider-marker-color: var(--google-blue-refresh-300);
          --cr-slider-marker-disabled-color: rgba(255, 255, 255, .54);
          --cr-slider-ripple-opacity: .4;
        }
      }

      :host([dragging]) {
        touch-action: none;
      }

      #container,
      #bar {
        /* Using border instead of background-color to address pixel rounding
           at low zoom levels (e.g. 33%). The browser will round border widths
           to a minimum of 1px.*/
        border-top-style: solid;
        border-top-width: 2px;
      }

      #container {
        border-top-color: var(--cr-slider-container-color);
        position: relative;
        top: 16px;
      }

      #container > div {
        position: absolute;
      }

      #markers,
      #bar {
        top: -2px;
      }

      #markers {
        display: flex;
        flex-direction: row;
        left: 0;
        pointer-events: none;
        right: 0;
      }

      .active-marker,
      .inactive-marker {
        flex: 1;
      }

      #markers::before,
      #markers::after,
      .active-marker::after,
      .inactive-marker::after {
        border-radius: 50%;
        content: '';
        display: block;
        height: 2px;
        margin-inline-start: -1px;
        width: 2px;
      }

      #markers::before,
      .active-marker::after {
        background-color: var(--cr-slider-marker-active-color);
      }

      #markers::after,
      .inactive-marker::after {
        background-color: var(--cr-slider-marker-color);
      }

      #bar {
        border-top-color: var(--cr-slider-active-color);
      }

      :host([transiting_]) #bar {
        transition: width var(--cr-slider-position-transition);
      }

      #knobAndLabel {
        top: -1px;
      }

      :host([transiting_]) #knobAndLabel {
        transition: margin-inline-start var(--cr-slider-position-transition);
      }

      #knob {
        background-color: var(--cr-slider-knob-color);
        border-radius: 50%;
        box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
        height: 10px;
        outline: none;
        transform: translate(-50%, -50%);
        width: 10px;
      }

      :host([is-rtl_]) #knob {
        transform: translate(50%, -50%);
      }

      #label {
        background: var(--cr-slider-knob-color);
        border-radius: .75em;
        bottom: 22px;
        color: white;  /* Same for dark and light mode. */
        font-size: 12px;
        line-height: 1.5em;
        opacity: 0;
        /* TODO(crbug.com/980856): Remove workaround after rendering bug is
         * fixed. */
        outline: 1px transparent solid;
        padding: 0 .67em;
        position: absolute;
        transform: translateX(-50%);
        transition: opacity 80ms ease-in-out;
        white-space: nowrap;
      }

      :host([is-rtl_]) #label {
        transform: translateX(50%);
      }

      :host(:hover) #label,
      :host([show-label_]) #label {
        opacity: 1;
      }

      paper-ripple {
        --paper-ripple-opacity: var(--cr-slider-ripple-opacity);
        color: var(--cr-slider-knob-color);
        height: 32px;
        left: -11px;
        pointer-events: none;
        top: -11px;
        transition: color linear 80ms;
        width: 32px;
      }

      :host([is-rtl_]) paper-ripple {
        left: auto;
        right: -11px;
      }

      :host([disabled_]) {
        pointer-events: none;
      }

      :host([disabled_]) #container {
        border-top-color: var(--cr-slider-container-disabled-color);
      }

      :host([disabled_]) #bar {
        border-top-color: var(--cr-slider-disabled-color);
      }

      :host([disabled_]) .inactive-marker::after,
      :host([disabled_]) #markers::after {
        background-color: var(--cr-slider-marker-disabled-color);
      }

      :host([disabled_]) #knob {
        background-color: var(--cr-slider-disabled-color);
        border: 2px solid var(--cr-slider-knob-disabled-color);
        box-shadow: unset;
      }
    </style>
    <div id="container" hidden>
      <div id="bar"></div>
      <div id="markers" hidden$="[[!markerCount]]">
        <template is="dom-repeat" items="[[getMarkers_(markerCount)]]">
          <div class$="[[getMarkerClass_(index, value, min, max,
                                         markerCount)]]"></div>
        </template>
      </div>
      <div id="knobAndLabel" on-transitionend="onTransitionEnd_">
        <div id="knob"></div>
        <div id="label">[[label_]]</div>
      </div>
    </div>
  </template>
  <script src="cr_slider.js"></script>
</dom-module>