waveterm/frontend/layout/lib/tilelayout.scss

// Copyright 2024, Command Line Inc.
// SPDX-License-Identifier: Apache-2.0

.tile-layout {
  position: relative;
  height: 100%;
  width: 100%;
  overflow: hidden;

  --gap-size-px: 5px;

  .overlay-container,
  .display-container,
  .placeholder-container {
    position: absolute;
    display: flex;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    min-height: 4rem;
    min-width: 4rem;
  }

  .display-container {
    z-index: var(--zindex-layout-display-container);
  }

  .placeholder-container {
    z-index: var(--zindex-layout-placeholder-container);
  }

  .overlay-container {
    z-index: var(--zindex-layout-overlay-container);
  }

  .overlay-node {
    display: flex;
    flex: 0 1 auto;
  }

  .resize-handle {
    z-index: var(--zindex-layout-resize-handle);

    .line {
      visibility: hidden;
    }
    &.flex-row {
      cursor: ew-resize;
      .line {
        height: 100%;
        width: calc(50% + 1px);
        border-right: 2px solid var(--accent-color);
      }
    }
    &.flex-column {
      cursor: ns-resize;
      .line {
        height: calc(50% + 1px);
        border-bottom: 2px solid var(--accent-color);
      }
    }
    &:hover .line {
      visibility: visible;

      // Ignore the prefers-reduced-motion override, since we are not applying a true animation here, just a delay.
      transition-property: visibility !important;
      transition-delay: var(--animation-time-s) !important;
    }
  }

  .tile-node {
    border-radius: calc(var(--block-border-radius) + 2px);
    overflow: hidden;
    width: 100%;
    height: 100%;

    &.dragging {
      filter: blur(8px);
    }

    &.resizing {
      border: 1px solid var(--accent-color);
      backdrop-filter: blur(8px);
    }

    .tile-leaf {
      overflow: hidden;
    }

    .tile-preview-container {
      position: absolute;
      top: 10000px;
      white-space: nowrap !important;
      user-select: none;
      -webkit-user-select: none;

      .tile-preview {
        width: 100%;
        height: 100%;
      }
    }

    &:not(:only-child) .tile-leaf {
      padding: calc(var(--gap-size-px) / 2);
    }
  }

  --block-blur: 2px;

  .magnified-node-backdrop,
  .ephemeral-node-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backdrop-filter: blur(var(--block-blur));
  }

  .magnified-node-backdrop {
    z-index: var(--zindex-layout-magnified-node-backdrop);
  }

  .ephemeral-node-backdrop {
    z-index: var(--zindex-layout-ephemeral-node-backdrop);
  }

  &.animate {
    .tile-node,
    .placeholder {
      transition-duration: var(--animation-time-s);
      transition-timing-function: linear;
      transition-property: transform, width, height, background-color;
    }
  }

  .tile-leaf,
  .overlay-leaf {
    height: 100%;
    width: 100%;
  }

  .placeholder {
    background-color: var(--accent-color);
    opacity: 0.5;
    border-radius: calc(var(--block-border-radius) + 2px);
  }
}