src/assets/track_panel.scss

// Copyright (C) 2024 The Android Open Source Project
//
// 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.

@use "sass:math";

@mixin track_shell_title() {
  font-size: 14px;
  max-height: 30px;
  overflow: hidden;
  text-align: left;
  overflow-wrap: break-word;
  font-family: "Roboto Condensed", sans-serif;
  font-weight: 300;
  line-break: anywhere;
}

.track-content.pf-track-content-error {
  // Necessary trig because we have a 45deg stripes
  $pattern-density: 1px * math.sqrt(2);
  $pattern-col: #ddd;

  // box-shadow: inset 0 0 0 5px red;
  background: repeating-linear-gradient(
    -45deg,
    $pattern-col,
    $pattern-col $pattern-density,
    white $pattern-density,
    white $pattern-density * 2
  );
}

.track {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: 1fr 0;
  container-type: size;

  &::after {
    display: block;
    content: "";
    grid-column: 1 / span 2;
    border-top: 1px solid var(--track-border-color);
    margin-top: -1px;
    z-index: 2;
  }

  .track-shell {
    @include transition();
    cursor: grab;
    width: var(--track-shell-width);
    border-right: 1px solid #c7d0db;

    .track-menubar {
      position: sticky;
      top: 0;
      display: grid;
      padding-block: 6px;
      padding-left: 10px;
      padding-right: 2px;
      grid-template-areas: "title buttons";
      grid-template-columns: 1fr auto;
    }

    .pf-visible-on-hover {
      visibility: hidden;
    }

    &:hover .pf-visible-on-hover {
      visibility: visible;
    }

    &.drag {
      background-color: #eee;
      box-shadow: 0 4px 12px -4px #999 inset;
    }
    &.drop-before {
      box-shadow: 0 4px 2px -1px hsl(213, 40%, 50%) inset;
    }
    &.drop-after {
      box-shadow: 0 -4px 2px -1px hsl(213, 40%, 50%) inset;
    }

    &.selected {
      background-color: #ebeef9;
    }

    .chip {
      background-color: #bed6ff;
      border-radius: $pf-border-radius;
      font-size: smaller;
      padding: 0 0.1rem;
      margin-left: 1ch;
      white-space: nowrap;
    }

    h1 {
      grid-area: title;
      color: hsl(213, 22%, 30%);
      @include track_shell_title();
    }
    .track-buttons {
      grid-area: buttons;
      display: flex;
      height: 100%;
      align-items: center;
      font-size: 18px;
    }

    &.flash {
      background-color: #ffe263;
    }
  }
}

.track-group-panel {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: 1fr;
  height: 40px;

  .shell {
    border-right: 1px solid transparent;
    padding-right: 2px;
  }

  &::after {
    display: block;
    content: "";
    grid-column: 1 / span 2;
    border-top: 1px solid var(--track-border-color);
    margin-top: -1px;
  }
  &[collapsed="true"] {
    background-color: var(--collapsed-background);
    .shell {
      border-right: 1px solid #c7d0db;
    }
    .track-button {
      color: rgb(60, 86, 136);
    }
  }
  &[collapsed="false"] {
    background-color: var(--expanded-background);
    color: white;
    font-weight: bold;
    .shell.flash {
      color: #121212;
    }
    .track-button {
      color: white;
    }
    span.chip {
      color: #121212;
    }
  }
  .shell {
    padding-left: 10px;
    display: grid;
    grid-template-areas: "fold-button title buttons";
    grid-template-columns: 28px 1fr auto;
    align-items: center;
    line-height: 1;
    width: var(--track-shell-width);
    min-height: 40px;

    .track-title {
      user-select: text;
    }

    .track-subtitle {
      font-size: 0.6rem;
      font-weight: normal;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
      // Maximum width according to grid-template-columns value for .shell
      width: calc(var(--track-shell-width) - 56px);
    }

    .chip {
      background-color: #bed6ff;
      border-radius: $pf-border-radius;
      font-size: smaller;
      padding: 0 0.1rem;
      margin-left: 1ch;
      white-space: nowrap;
    }

    .title-wrapper {
      grid-area: title;
      overflow: hidden;
    }
    h1 {
      @include track_shell_title();
    }
    .fold-button {
      grid-area: fold-button;
    }

    .track-buttons {
      grid-area: buttons;
      display: flex;
      height: 100%;
      align-items: center;
      font-size: 18px;
    }

    &:hover {
      cursor: pointer;
      .fold-button {
        color: hsl(45, 100%, 48%);
      }
    }
    &.flash {
      background-color: #ffe263;
    }
    &.selected {
      background-color: #ebeef9;
    }
  }
  .track-content {
    display: grid;
    span {
      @include track_shell_title();
      align-self: center;
    }
  }
}

.pf-panel-group {
  .track-shell {
    .track-menubar {
      top: 40px;
    }
  }
}

// If the track is short, center the track titlebar vertically
@container (height < 26px) {
  .track {
    .track-shell {
      display: flex;
      flex-direction: column;
      align-items: stretch;
      justify-content: center;

      .track-menubar {
        padding-block: 0px;
      }
    }
  }
}