element-call/src/video-grid/VideoTile.module.css

/*
Copyright 2022 New Vector Ltd

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.
*/

.videoTile {
  position: absolute;
  contain: strict;
  top: 0;
  container-name: videoTile;
  container-type: size;
  --tileRadius: 8px;
  border-radius: var(--tileRadius);
  overflow: hidden;
  cursor: pointer;

  /* HACK: This has no visual effect due to the short duration, but allows the
  JS to detect movement via the transform property for audio spatialization */
  transition: transform 0.000000001s;
}

.videoTile * {
  user-select: none;
}

.videoTile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background-color: #444;
}

.videoTile.isLocal:not(.screenshare) video {
  transform: scaleX(-1);
}

.videoTile::after {
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  content: "";
  border-radius: var(--tileRadius);
  box-shadow: inset 0 0 0 4px var(--accent) !important;
  opacity: 0;
  transition: opacity ease 0.15s;
}

.videoTile.speaking::after {
  opacity: 1;
}

.videoTile.maximised {
  position: relative;
  border-radius: 0;
  height: 100%;
  width: 100%;
}

.videoTile.screenshare > video {
  object-fit: contain;
}

.infoBubble {
  position: absolute;
  height: 24px;
  padding: 0 8px;
  color: var(--primary-content);
  background-color: var(--background-85);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  user-select: none;
  max-width: calc(100% - 48px);
  overflow: hidden;
  z-index: 1;
}

.infoBubble > svg {
  height: 16px;
  width: 16px;
  margin-right: 4px;
}

.toolbar {
  position: absolute;
  top: 0;
  left: 0;

  width: 100%;
  height: 42px;

  color: var(--primary-content);
  background-color: var(--background-85);

  display: flex;
  align-items: center;
  justify-content: flex-end;

  overflow: hidden;
  z-index: 1;

  transition: opacity ease 0.15s;
}

.toolbar:not(:hover) {
  opacity: 0;
}

.toolbar:hover + .presenterLabel {
  top: calc(42px + 20px); /* toolbar + margin */
}

.button {
  margin-right: 16px;
}

.button svg {
  width: 16px;
  height: 16px;
}

.memberName {
  left: 16px;
  bottom: 16px;
}

.memberName > :last-child {
  margin-right: 0px;
}

.memberName span {
  font-size: var(--font-size-caption);
  font-weight: 400;
  line-height: var(--font-size-body);
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.videoMutedOverlay {
  width: 100%;
  height: 100%;
  background-color: #21262c;
}

.presenterLabel {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #17191c;
  border-radius: 4px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 4px 8px;
  font-weight: normal;
  font-size: var(--font-size-caption);
  line-height: var(--font-size-body);
}

.screensharePIP {
  bottom: 8px;
  right: 8px;
  width: 25%;
  max-width: 360px;
  border-radius: 20px;
}

.debugInfo {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(0, 0, 0, 0.5);
}

@media (min-width: 800px) {
  .videoTile {
    --tileRadius: 20px;
  }
}

/* CSS makes us put a condition here, even though all we want to do is
unconditionally select the container so we can use cqmin units */
@container videoTile (width > 0) {
  .avatar {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    /* To make avatars scale smoothly with their tiles during animations, we
    override the styles set on the element */
    --avatarSize: 50cqmin; /* Half of the smallest dimension of the tile */
    width: var(--avatarSize) !important;
    height: var(--avatarSize) !important;
    border-radius: 10000px !important;
  }
}