SlabUploader/frontend/src/capture/MeasurePanel.svelte

<script lang="ts">
  import type { Capture } from './capture.types';
  import { inToEighths, eighthsToIn } from './capture.types';
  import { fmtEighths } from './session';
  import PhotoStage from './PhotoStage.svelte';

  export let state: Extract<Capture, { k: 'measure' }>;
  export let setLength: (e: number) => void;
  export let setThickness: (e: number) => void;
  export let calculate: () => Promise<void>;
  export let back: () => void;
  export let pngUrl: string | null;

  let calcBusy = false;
  let lengthIn = state.lengthEighths === 0 ? '' : String(eighthsToIn(state.lengthEighths));
  let thicknessIn = state.thicknessEighths === 0 ? '' : String(eighthsToIn(state.thicknessEighths));

  const positiveInches = (raw: string): number | null => {
    const inches = Number.parseFloat(raw);
    return Number.isFinite(inches) && inches > 0 ? inches : null;
  };

  const commitLength = () => {
    const inches = positiveInches(String(lengthIn));
    const eighths = inches === null ? 0 : inToEighths(inches);
    setLength(eighths);
    lengthIn = eighths === 0 ? '' : String(eighthsToIn(eighths));
  };
  const commitThickness = () => {
    const inches = positiveInches(String(thicknessIn));
    const eighths = inches === null ? 0 : inToEighths(inches);
    setThickness(eighths);
    thicknessIn = eighths === 0 ? '' : String(eighthsToIn(eighths));
  };

  $: canCalc = positiveInches(String(lengthIn)) !== null && positiveInches(String(thicknessIn)) !== null;

  const doCalc = async () => {
    calcBusy = true;
    try {
      commitLength();
      commitThickness();
      await calculate();
    } finally { calcBusy = false; }
  };
</script>

<section class="panel">
  <h1>Measure</h1>
  <PhotoStage
    blob={state.source.blob}
    bbox={state.axis.bbox}
    maskBitset={state.approvedMask.bitset}
    maskW={state.source.widthPx > 0 ? state.source.widthPx : 0}
    maskH={state.source.widthPx > 0 ? state.approvedMask.bitset.length / state.source.widthPx : 0}
  />

  <div class="fields">
    <div class="field">
      <span class="label">Length L</span>
      <input
        type="number"
        aria-label="Length L"
        inputmode="decimal"
        step="0.125"
        min="0"
        placeholder="0"
        bind:value={lengthIn}
        on:blur={commitLength}
        on:change={commitLength}
      />
    </div>
    <div class="field">
      <span class="label">Thickness</span>
      <input
        type="number"
        aria-label="Thickness"
        inputmode="decimal"
        step="0.125"
        min="0"
        placeholder="0"
        bind:value={thicknessIn}
        on:blur={commitThickness}
        on:change={commitThickness}
      />
    </div>
  </div>

  <div class="row">
    <button type="button" class="ghost" on:click={back}>Back</button>
    <button
      type="button"
      class="primary"
      disabled={calcBusy || !canCalc}
      on:click={doCalc}
    >
      {calcBusy ? 'Calculating…' : 'Calculate'}
    </button>
  </div>

  {#if state.results}
    <div class="results">
      <div class="nums">
        <div><span>Widths</span><span>{fmtEighths(state.results.widths.min)} – {fmtEighths(state.results.widths.max)} (avg {fmtEighths(state.results.widths.avg)})</span></div>
        <div><span>Sqft</span><span>{state.results.sqft.toFixed(2)}</span></div>
        <div><span>Bdft</span><span>{state.results.bdft.toFixed(2)}</span></div>
        <div><span>Scale</span><span>{state.results.scale.toFixed(2)} px/in</span></div>
      </div>
      {#if state.results.sourceBelowFloor}
        <div class="warn">Source is below the 800px floor for the inventory PNG. Retake a larger photo.</div>
      {/if}
      {#if pngUrl && !state.results.sourceBelowFloor}
        <div class="png-wrap">
          <img src={pngUrl} alt="Inventory PNG" />
        </div>
      {/if}
    </div>
  {/if}
</section>

<style>
  .panel { padding: 16px; color: #eee; }
  h1 { font-size: 1.3rem; margin: 0 0 12px; }
  .fields { display: flex; gap: 16px; margin-top: 16px; }
  .field { flex: 1; }
  .label { display: block; font-size: 0.9rem; color: #aaa; margin-bottom: 8px; }
  .field input {
    box-sizing: border-box; width: 100%; min-height: 52px; padding: 12px; font-size: 1rem;
    border-radius: 10px; border: 1px solid #444; background: #1d1d1d; color: #eee;
    font-variant-numeric: tabular-nums;
  }
  .row { display: flex; gap: 10px; margin-top: 20px; }
  .primary {
    flex: 2; padding: 14px; font-size: 1.05rem; border-radius: 10px; border: 0;
    background: #00e5ff; color: #002; font-weight: 700;
  }
  .primary:disabled { background: #333; color: #777; }
  .ghost { flex: 1; padding: 14px; border-radius: 10px; border: 1px solid #444; background: transparent; color: #ccc; }
  .results { margin-top: 20px; }
  .nums { display: flex; flex-direction: column; gap: 8px; }
  .nums div { display: flex; justify-content: space-between; border-bottom: 1px solid #2a2a2a; padding-bottom: 6px; }
  .nums span:first-child { color: #aaa; }
  .warn { color: #ffb4a2; margin-top: 12px; font-size: 0.9rem; }
  .png-wrap { margin-top: 16px; text-align: center; background-image: linear-gradient(45deg,#ccc 25%,transparent 25%),linear-gradient(-45deg,#ccc 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#ccc 75%),linear-gradient(-45deg,transparent 75%,#ccc 75%); background-size: 16px 16px; background-position: 0 0,0 8px,8px -8px,-8px 0; background-color: #eee; border-radius: 8px; padding: 8px; }
  .png-wrap img { max-width: 100%; border-radius: 4px; }
</style>