shaka-player/ui/less/buttons.less

/** @license
 * Shaka Player
 * Copyright 2016 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

/* The main buttons in the UI controls. */

@play-button-size-percentage: 15%;

.disabled-button() {
  /* Set the background and the color, otherwise it might be overwritten by
   * the css styles in demo. */
  background-color: transparent;
  color: @general-font-color;
  cursor: default;
}

/* The giant play button, which sits inside .shaka-player-button-container. */
.shaka-play-button {
  /* Set width & height in a round-about way.  By using padding, we can keep
   * a 1:1 aspect ratio and size the button relative to the container width.
   *
   * Since padding is applied equally to top, bottom, left, and right, only use
   * half of the intended percentage for each.
   *
   * Based on tips from https://stackoverflow.com/a/12925343 */
  box-sizing: border-box;
  padding: calc(@play-button-size-percentage / 2);
  width: 0;
  height: 0;

  /* To be properly positioned in the center, this should have no margin.
   * This might have been set for buttons generally by the app or user-agent. */
  margin: 0;

  /* This makes the button a circle. */
  border-radius: 50%;

  /* A small drop shadow below the button. */
  box-shadow: rgba(0, 0, 0, 10%) 0 0 20px 0;

  /* No border. */
  border: none;

  /* The play arrow is a picture. It is treated a background image.
   * The following settings ensure it shows only once and in the
   * center of the button. */
  background-size: 50%;
  background-repeat: no-repeat;
  background-position: center center;

  /* A background color behind the play arrow. */
  background-color: rgba(255, 255, 255, 90%);

  .show-when-controls-shown();

  /* Actual icon images for the two states this could be in.
   * These will be inlined as data URIs when compiled, and so do not need to be
   * deployed separately from the compiled CSS.
   * Note that these URIs should relative to ui/controls.less, not this file. */
  &[icon="play"] {
    background-image: data-uri("images/play_arrow.svg");
  }

  &[icon="pause"] {
    background-image: data-uri("images/pause.svg");
  }

  &[icon="replay"] {
    background-image: data-uri("images/replay.svg");
  }

  @media (prefers-reduced-transparency: no-preference) {
    .shaka-controls-container[shown="true"] & {
      opacity: 0.75;
    }
  }
}

/* This button contains the current time and duration of the video.
 * It's only clickable when the content is live, and current time is behind live
 * edge. Otherwise, the button is disabled.
 */
.shaka-current-time {
  font-size: @general-font-size;
  color: @general-font-color;
  cursor: pointer;
  width: auto;
  padding: 0 5px;

  &[disabled] {
    .disabled-button();
  }
}

/* Use a consistent outline focus style across browsers. */
.shaka-controls-container {
  button:focus, input:focus {
    /* Most browsers will fall back to "Highlight" (system setting) color for
     * the focus outline. */
    outline: 1px solid Highlight;
  }

  /* Disable this Mozilla-specific focus ring, since we have an outline defined
   * for focus. */
  button:-moz-focus-inner, input:-moz-focus-outer {
    outline: none;
    border: 0;
  }
}

/* Outline on focus is important for accessibility, but
 * it doesn't look great. This removes the outline for
 * mouse users while leaving it for keyboard users. */
.shaka-controls-container:not(.shaka-keyboard-navigation) {
  button:focus, input:focus {
    outline: none;
  }
}

.shaka-fast-forward-container,
.shaka-rewind-container {
  height: 100%;
  width: 100%;
  .shrinkable();
  .absolute-position();

  /* Keep all the elements inside button div in center and in row */
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;

  /* To be properly positioned, this should have no margin. */
  margin: 0;

  /* No border. */
  border: none;

  color: @general-font-color;
  background-color: @general-background-color;

  cursor: default;
  font-size: 20px;

  /* Hidding the container by setting opacity */
  opacity: 0;

  /* Make the text inside this button unselectable */
  .unselectable();
}

.shaka-fast-forward-container {
  border-radius: 40% 0  0 40%;
}

.shaka-rewind-container {
  border-radius: 0 40% 40% 0;
}

/* This class is instead of material-icon-round
 * because the font-size of 24 doesn't look good */
.shaka-forward-rewind-container-icon {
  font-size: 32px;
}