Add China time to usage logs

app/globals.css

@@ -52,7 +52,10 @@ button { color: inherit; }
 .upload-overlay { position: absolute; z-index: 3; right: 10px; bottom: 10px; padding: 7px 10px; border: 0; color: white; background: rgba(22, 75, 57, .9); cursor: pointer; font-size: 12px; }
 .file-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: 9px 0 24px; color: var(--muted); font-size: 11px; }
 .crop-select-button { width: 100%; margin-top: 0; padding: 10px; border: 1px solid var(--ink); background: var(--lime); cursor: pointer; font-size: 12px; font-weight: 700; }
-.reset-crop { width: 100%; margin: 7px 0 20px; padding: 7px; border: 1px solid var(--line); background: white; cursor: pointer; color: var(--muted); font-size: 11px; }
+.reset-crop { width: 100%; margin: 7px 0 0; padding: 7px; border: 1px solid var(--line); background: white; cursor: pointer; color: var(--muted); font-size: 11px; }
+.pattern-import-button { width: 100%; margin: 7px 0 20px; padding: 9px; border: 1px solid #b6532d; background: #fff5ec; color: #8f3f20; cursor: pointer; font-size: 12px; font-weight: 700; }
+.pattern-import-button:hover { background: #fee5d1; }
+.pattern-import-file { display: none; }
 .field-row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 8px; }
 .field-row label, .field { display: flex; flex-direction: column; gap: 8px; }
 .field-row label span, .field > span { color: var(--muted); font-size: 12px; }
@@ -128,9 +131,9 @@ input[type="range"] { accent-color: var(--green); }
 .history-heading p:not(.section-kicker) { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
 .history-heading .search-box { width: min(330px, 100%); }
 .history-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding-top: 18px; }
-.history-card { min-width: 0; padding: 16px; display: grid; grid-template-columns: 58px minmax(0,1fr); gap: 12px; border: 1px solid var(--line); background: var(--card); }
-.history-swatches { width: 58px; height: 58px; display: flex; overflow: hidden; border: 1px solid var(--ink); }
-.history-swatches i { min-width: 3px; }
+.history-card { min-width: 0; padding: 16px; display: grid; grid-template-columns: 86px minmax(0,1fr); gap: 13px; border: 1px solid var(--line); background: var(--card); }
+.history-thumbnail { width: 86px; height: 86px; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--ink); background-color: #f8f6f0; background-image: linear-gradient(45deg, #dedbd3 25%, transparent 25%), linear-gradient(-45deg, #dedbd3 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #dedbd3 75%), linear-gradient(-45deg, transparent 75%, #dedbd3 75%); background-position: 0 0, 0 5px, 5px -5px, -5px 0; background-size: 10px 10px; }
+.history-thumbnail canvas { display: block; width: auto; height: auto; max-width: 100%; max-height: 100%; image-rendering: pixelated; }
 .history-card h3 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: 3px 0 7px; font-size: 14px; }
 .history-card p { margin: 0; color: var(--muted); font-size: 10px; }
 .history-actions { grid-column: 1 / -1; display: flex; gap: 7px; justify-content: flex-end; }
@@ -145,8 +148,23 @@ input[type="range"] { accent-color: var(--green); }
 .crop-dialog-header h2 { margin: 0; font-size: 22px; }
 .crop-dialog-header p:not(.section-kicker) { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
 .crop-dialog-header > button { width: 38px; height: 38px; flex: 0 0 auto; border: 1px solid var(--line); background: white; cursor: pointer; font-size: 25px; line-height: 1; }
+.crop-mode-bar { min-height: 54px; padding: 8px 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); background: #f7f4ec; color: var(--muted); font-size: 11px; }
+.crop-mode-switch { display: inline-flex; border: 1px solid var(--ink); background: white; }
+.crop-mode-switch button { min-height: 34px; padding: 0 15px; border: 0; border-right: 1px solid var(--ink); background: transparent; cursor: pointer; font-size: 12px; }
+.crop-mode-switch button:last-child { border-right: 0; }
+.crop-mode-switch button.active { background: var(--green); color: white; font-weight: 700; }
+.pattern-import-dimensions { display: flex; align-items: flex-end; gap: 8px; }
+.pattern-import-dimensions label { display: grid; gap: 3px; color: var(--muted); font-size: 10px; }
+.pattern-import-dimensions input { width: 82px; height: 34px; padding: 0 8px; border: 1px solid var(--line); background: white; color: var(--ink); font-size: 12px; }
+.pattern-import-dimensions b { padding-bottom: 9px; color: var(--muted); font-weight: 400; }
+.pattern-import-empty-option { display: flex; align-items: center; gap: 6px; color: var(--ink); cursor: pointer; }
+.pattern-import-empty-option input { accent-color: var(--green); }
+.crop-size-readout { margin-left: auto; font-variant-numeric: tabular-nums; }
 .crop-dialog-scroll { min-height: 0; flex: 1 1 auto; overflow: auto; padding: 18px; display: grid; place-items: center; background-color: #e9e5db; background-image: radial-gradient(#c8c3b8 .7px, transparent .7px); background-size: 12px 12px; }
 .crop-dialog-stage { position: relative; width: max-content; max-width: 100%; line-height: 0; cursor: crosshair; touch-action: none; user-select: none; box-shadow: 0 0 0 1px var(--ink); }
+.crop-dialog-stage.can-move-selection { cursor: move; }
+.crop-dialog-stage.is-moving-selection { cursor: grabbing; }
+.crop-dialog-stage.is-resizing-selection { cursor: nwse-resize; }
 .crop-dialog-stage canvas { display: block; max-width: 100%; height: auto; pointer-events: none; }
 .crop-selection-mask { position: absolute; z-index: 1; background: rgba(10,15,13,.55); pointer-events: none; }
 .crop-selection-top { inset: 0 0 auto; }
@@ -156,6 +174,16 @@ input[type="range"] { accent-color: var(--green); }
 .crop-selection-box::before, .crop-selection-box::after { content: ""; position: absolute; background: rgba(255,255,255,.62); }
 .crop-selection-box::before { left: 33.333%; top: 0; bottom: 0; width: 1px; box-shadow: calc(33.333% * 1) 0 0 rgba(255,255,255,.62); }
 .crop-selection-box::after { left: 0; right: 0; top: 33.333%; height: 1px; box-shadow: 0 calc(33.333% * 1) 0 rgba(255,255,255,.62); }
+.pattern-import-grid-overlay { position: absolute; z-index: 3; inset: 0; display: block; pointer-events: none; background-image: linear-gradient(to right, rgba(255,102,0,.66) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,102,0,.66) 1px, transparent 1px); box-shadow: inset -1px -1px 0 rgba(255,102,0,.66); }
+.crop-resize-handle { position: absolute; z-index: 4; width: 15px; height: 15px; display: block; border: 2px solid white; border-radius: 50%; background: var(--green); box-shadow: 0 1px 4px rgba(0,0,0,.48); pointer-events: auto; }
+.handle-nw { left: 0; top: 0; transform: translate(-50%, -50%); cursor: nwse-resize; }
+.handle-ne { right: 0; top: 0; transform: translate(50%, -50%); cursor: nesw-resize; }
+.handle-sw { left: 0; bottom: 0; transform: translate(-50%, 50%); cursor: nesw-resize; }
+.handle-se { right: 0; bottom: 0; transform: translate(50%, 50%); cursor: nwse-resize; }
+.handle-n { left: 50%; top: 0; transform: translate(-50%, -50%); cursor: ns-resize; }
+.handle-s { left: 50%; bottom: 0; transform: translate(-50%, 50%); cursor: ns-resize; }
+.handle-w { left: 0; top: 50%; transform: translate(-50%, -50%); cursor: ew-resize; }
+.handle-e { right: 0; top: 50%; transform: translate(50%, -50%); cursor: ew-resize; }
 .crop-dialog-actions { flex: 0 0 auto; min-height: 66px; padding: 12px 20px; display: flex; align-items: center; justify-content: flex-end; gap: 10px; border-top: 1px solid var(--line); }
 .crop-dialog-actions span { margin-right: auto; color: var(--muted); font-size: 11px; }
 .crop-dialog-actions button { min-height: 40px; padding: 0 16px; border: 1px solid var(--ink); background: white; cursor: pointer; font-size: 12px; }
@@ -201,7 +229,19 @@ input[type="range"] { accent-color: var(--green); }
   .crop-dialog { width: 100vw; max-height: 100vh; height: 100vh; border: 0; box-shadow: none; }
   .crop-dialog-header { padding: 14px 16px; }
   .crop-dialog-header h2 { font-size: 18px; }
+  .crop-mode-bar { padding: 8px 12px; flex-wrap: wrap; gap: 7px 10px; }
+  .crop-mode-switch { flex: 1; }
+  .crop-mode-switch button { flex: 1; padding: 0 8px; }
+  .pattern-import-dimensions { width: 100%; }
+  .pattern-import-dimensions label { flex: 1; }
+  .pattern-import-dimensions input { width: 100%; min-height: 42px; }
+  .pattern-import-empty-option { width: 100%; min-height: 34px; }
+  .crop-size-readout { width: 100%; margin-left: 0; }
+  .crop-resize-handle { width: 28px; height: 28px; border-width: 3px; }
+  .crop-edge-handle { display: none; }
   .crop-dialog-scroll { padding: 10px; }
+  .crop-dialog-stage { width: 100%; max-width: 100%; }
+  .crop-dialog-stage canvas { width: 100%; max-width: 100%; height: auto; }
   .crop-dialog-actions { padding: 10px 12px; flex-wrap: wrap; }
   .crop-dialog-actions span { width: 100%; order: -1; }
   .crop-dialog-actions button { flex: 1; padding: 0 10px; }

app/page.tsx

@@ -35,7 +35,23 @@ type CropRect = {
   height: number;
 };
 
+type CropSelectionMode = "free" | "square";
+type CropDialogPurpose = "source" | "pattern-import";
+
+type CropResizeHandle = "n" | "s" | "e" | "w" | "nw" | "ne" | "sw" | "se";
+
+type CropSelectionDrag = {
+  pointerId: number;
+  mode: "create" | "move" | "resize";
+  startX: number;
+  startY: number;
+  origin: CropRect;
+  handle?: CropResizeHandle;
+};
+
 const FULL_CROP: CropRect = { x: 0, y: 0, width: 1, height: 1 };
+// 现成图纸识别准确率仍需继续优化，暂时保留实现但关闭用户入口。
+const ENABLE_PATTERN_IMPORT = false;
 
 function logUsage(event: Record<string, unknown>) {
   void fetch("/api/usage", {
@@ -79,6 +95,17 @@ function createHistoryId() {
   return `${Date.now().toString(36)}-${Math.random().toString(36).slice(2, 10)}`;
 }
 
+function rowNumberToLetters(rowNumber: number) {
+  let value = Math.max(1, Math.floor(rowNumber));
+  let letters = "";
+  while (value > 0) {
+    value -= 1;
+    letters = String.fromCharCode(65 + (value % 26)) + letters;
+    value = Math.floor(value / 26);
+  }
+  return letters;
+}
+
 function openHistoryDatabase() {
   return new Promise<IDBDatabase>((resolve, reject) => {
     const request = indexedDB.open(HISTORY_DB_NAME, 1);
@@ -160,6 +187,7 @@ const PALETTE: BeadColor[] = MARD_221.map(([code, hex]) => {
   const rgb: [number, number, number] = [parseInt(hex.slice(1, 3), 16), parseInt(hex.slice(3, 5), 16), parseInt(hex.slice(5, 7), 16)];
   return { code, name: `MARD ${MARD_SERIES_NAMES[code[0]]}`, hex, rgb, lab: rgbToOklab(rgb) };
 });
+const PALETTE_BY_CODE = new Map(PALETTE.map((color) => [color.code, color]));
 
 const hexToRgb = (hex: string): [number, number, number] => [
   parseInt(hex.slice(1, 3), 16),
@@ -167,6 +195,29 @@ const hexToRgb = (hex: string): [number, number, number] => [
   parseInt(hex.slice(5, 7), 16),
 ];
 
+function HistoryThumbnail({ entry }: { entry: SavedPattern }) {
+  const thumbnailRef = useRef<HTMLCanvasElement | null>(null);
+  useEffect(() => {
+    const canvas = thumbnailRef.current;
+    if (!canvas) return;
+    canvas.width = Math.max(1, entry.width);
+    canvas.height = Math.max(1, entry.height);
+    const ctx = canvas.getContext("2d");
+    if (!ctx) return;
+    ctx.clearRect(0, 0, canvas.width, canvas.height);
+    entry.codes.forEach((code, index) => {
+      if (!code) return;
+      const color = PALETTE_BY_CODE.get(code);
+      if (!color) return;
+      ctx.fillStyle = color.hex;
+      ctx.fillRect(index % entry.width, Math.floor(index / entry.width), 1, 1);
+    });
+  }, [entry]);
+  return <div className="history-thumbnail" aria-label={`${entry.name} 的完整格子图缩略图`}>
+    <canvas ref={thumbnailRef} />
+  </div>;
+}
+
 function nearestColor(lab: Oklab, palette: BeadColor[]) {
   let closest = palette[0];
   let smallest = Number.POSITIVE_INFINITY;
@@ -180,6 +231,231 @@ function nearestColor(lab: Oklab, palette: BeadColor[]) {
   return closest;
 }
 
+type NormalizedGlyph = {
+  pixels: Uint8Array;
+  count: number;
+};
+
+let mardCodeTemplates: Array<{ code: string; glyph: NormalizedGlyph }> | null = null;
+
+function normalizeGlyph(mask: Uint8Array, width: number, height: number, targetWidth = 32, targetHeight = 16): NormalizedGlyph | null {
+  let left = width;
+  let right = -1;
+  let top = height;
+  let bottom = -1;
+  for (let y = 0; y < height; y++) {
+    for (let x = 0; x < width; x++) {
+      if (!mask[y * width + x]) continue;
+      left = Math.min(left, x);
+      right = Math.max(right, x);
+      top = Math.min(top, y);
+      bottom = Math.max(bottom, y);
+    }
+  }
+  if (right < left || bottom < top) return null;
+  const sourceWidth = right - left + 1;
+  const sourceHeight = bottom - top + 1;
+  const scale = Math.min((targetWidth - 2) / sourceWidth, (targetHeight - 2) / sourceHeight);
+  const drawWidth = Math.max(1, Math.round(sourceWidth * scale));
+  const drawHeight = Math.max(1, Math.round(sourceHeight * scale));
+  const offsetX = Math.floor((targetWidth - drawWidth) / 2);
+  const offsetY = Math.floor((targetHeight - drawHeight) / 2);
+  const pixels = new Uint8Array(targetWidth * targetHeight);
+  let count = 0;
+  for (let y = 0; y < drawHeight; y++) {
+    for (let x = 0; x < drawWidth; x++) {
+      const sourceX = left + Math.min(sourceWidth - 1, Math.floor(x / scale));
+      const sourceY = top + Math.min(sourceHeight - 1, Math.floor(y / scale));
+      if (!mask[sourceY * width + sourceX]) continue;
+      pixels[(offsetY + y) * targetWidth + offsetX + x] = 1;
+      count += 1;
+    }
+  }
+  return count >= 3 ? { pixels, count } : null;
+}
+
+function buildMardCodeTemplates() {
+  if (mardCodeTemplates) return mardCodeTemplates;
+  const canvas = document.createElement("canvas");
+  canvas.width = 96;
+  canvas.height = 48;
+  const ctx = canvas.getContext("2d", { willReadFrequently: true })!;
+  mardCodeTemplates = PALETTE.map((color) => {
+    ctx.clearRect(0, 0, canvas.width, canvas.height);
+    ctx.fillStyle = "#ffffff";
+    ctx.fillRect(0, 0, canvas.width, canvas.height);
+    ctx.fillStyle = "#000000";
+    ctx.font = "700 28px Arial";
+    ctx.textAlign = "center";
+    ctx.textBaseline = "middle";
+    ctx.fillText(color.code, canvas.width / 2, canvas.height / 2);
+    const data = ctx.getImageData(0, 0, canvas.width, canvas.height).data;
+    const mask = new Uint8Array(canvas.width * canvas.height);
+    for (let index = 0; index < mask.length; index++) {
+      const offset = index * 4;
+      const luminance = data[offset] * 0.299 + data[offset + 1] * 0.587 + data[offset + 2] * 0.114;
+      if (luminance < 150) mask[index] = 1;
+    }
+    return { code: color.code, glyph: normalizeGlyph(mask, canvas.width, canvas.height)! };
+  });
+  return mardCodeTemplates;
+}
+
+function glyphSimilarity(first: NormalizedGlyph, second: NormalizedGlyph) {
+  let intersection = 0;
+  for (let index = 0; index < first.pixels.length; index++) {
+    if (first.pixels[index] && second.pixels[index]) intersection += 1;
+  }
+  return (2 * intersection) / Math.max(1, first.count + second.count);
+}
+
+function dominantCellBackground(data: Uint8ClampedArray, canvasWidth: number, startX: number, startY: number, cellSize: number) {
+  const bins = new Map<number, { count: number; red: number; green: number; blue: number; alpha: number }>();
+  const inset = Math.max(2, Math.floor(cellSize * 0.12));
+  for (let y = inset; y < cellSize - inset; y++) {
+    for (let x = inset; x < cellSize - inset; x++) {
+      const nx = x / cellSize;
+      const ny = y / cellSize;
+      if (nx > 0.34 && nx < 0.66 && ny > 0.27 && ny < 0.73) continue;
+      const index = ((startY + y) * canvasWidth + startX + x) * 4;
+      const alpha = data[index + 3];
+      const key = alpha < TRANSPARENT_ALPHA_THRESHOLD
+        ? -1
+        : ((data[index] >> 4) << 8) | ((data[index + 1] >> 4) << 4) | (data[index + 2] >> 4);
+      const bin = bins.get(key) ?? { count: 0, red: 0, green: 0, blue: 0, alpha: 0 };
+      bin.count += 1;
+      bin.red += data[index];
+      bin.green += data[index + 1];
+      bin.blue += data[index + 2];
+      bin.alpha += alpha;
+      bins.set(key, bin);
+    }
+  }
+  const dominant = [...bins.values()].sort((a, b) => b.count - a.count)[0];
+  if (!dominant) return { rgb: [255, 255, 255] as [number, number, number], alpha: 0 };
+  return {
+    rgb: [
+      Math.round(dominant.red / dominant.count),
+      Math.round(dominant.green / dominant.count),
+      Math.round(dominant.blue / dominant.count),
+    ] as [number, number, number],
+    alpha: Math.round(dominant.alpha / dominant.count),
+  };
+}
+
+function extractCellGlyph(
+  data: Uint8ClampedArray,
+  canvasWidth: number,
+  startX: number,
+  startY: number,
+  cellSize: number,
+  background: [number, number, number],
+) {
+  const mask = new Uint8Array(cellSize * cellSize);
+  const marginX = Math.max(2, Math.floor(cellSize * 0.12));
+  const marginY = Math.max(2, Math.floor(cellSize * 0.16));
+  for (let y = marginY; y < cellSize - marginY; y++) {
+    for (let x = marginX; x < cellSize - marginX; x++) {
+      const index = ((startY + y) * canvasWidth + startX + x) * 4;
+      if (data[index + 3] < TRANSPARENT_ALPHA_THRESHOLD) continue;
+      const difference = Math.hypot(
+        data[index] - background[0],
+        data[index + 1] - background[1],
+        data[index + 2] - background[2],
+      );
+      if (difference >= 72) mask[y * cellSize + x] = 1;
+    }
+  }
+  return normalizeGlyph(mask, cellSize, cellSize);
+}
+
+function recognizeMardCode(glyph: NormalizedGlyph, backgroundLab: Oklab) {
+  let bestCode = "";
+  let bestScore = 0;
+  const candidates = buildMardCodeTemplates()
+    .map((template) => ({ template, distance: oklabDistance(backgroundLab, PALETTE_BY_CODE.get(template.code)!.lab) }))
+    .sort((first, second) => first.distance - second.distance)
+    .slice(0, 24);
+  for (const { template, distance } of candidates) {
+    const rawScore = glyphSimilarity(glyph, template.glyph);
+    const colorPenalty = Math.min(0.16, distance * 0.35);
+    const score = rawScore - colorPenalty;
+    if (score > bestScore) {
+      bestScore = score;
+      bestCode = template.code;
+    }
+  }
+  return { code: bestCode, score: bestScore };
+}
+
+function importMardPatternImage(
+  image: HTMLImageElement,
+  crop: CropRect,
+  width: number,
+  height: number,
+  missingCodeAsEmpty: boolean,
+) {
+  const maximumSide = 4096;
+  const cellSize = Math.max(10, Math.min(36, Math.floor(maximumSide / Math.max(width, height))));
+  const canvas = document.createElement("canvas");
+  canvas.width = width * cellSize;
+  canvas.height = height * cellSize;
+  const ctx = canvas.getContext("2d", { willReadFrequently: true })!;
+  ctx.imageSmoothingEnabled = true;
+  ctx.drawImage(
+    image,
+    crop.x * image.naturalWidth,
+    crop.y * image.naturalHeight,
+    crop.width * image.naturalWidth,
+    crop.height * image.naturalHeight,
+    0,
+    0,
+    canvas.width,
+    canvas.height,
+  );
+  const data = ctx.getImageData(0, 0, canvas.width, canvas.height).data;
+  const pixels: Pixel[] = [];
+  let recognizedCodes = 0;
+  let colorMatches = 0;
+  let emptyCells = 0;
+  const recognitionCache = new Map<string, { code: string; score: number }>();
+  for (let row = 0; row < height; row++) {
+    for (let column = 0; column < width; column++) {
+      const startX = column * cellSize;
+      const startY = row * cellSize;
+      const background = dominantCellBackground(data, canvas.width, startX, startY, cellSize);
+      const backgroundLab = rgbToOklab(background.rgb);
+      const glyph = extractCellGlyph(data, canvas.width, startX, startY, cellSize, background.rgb);
+      let recognized: { code: string; score: number } | null = null;
+      if (glyph) {
+        let key = "";
+        for (let index = 0; index < glyph.pixels.length; index++) key += glyph.pixels[index] ? "1" : "0";
+        recognized = recognitionCache.get(key) ?? recognizeMardCode(glyph, backgroundLab);
+        recognitionCache.set(key, recognized);
+      }
+      if (recognized && recognized.score >= 0.58 && PALETTE_BY_CODE.has(recognized.code)) {
+        pixels.push({ color: PALETTE_BY_CODE.get(recognized.code)! });
+        recognizedCodes += 1;
+        continue;
+      }
+      if (missingCodeAsEmpty) {
+        pixels.push({ color: null });
+        emptyCells += 1;
+        continue;
+      }
+      const chroma = Math.hypot(backgroundLab[1], backgroundLab[2]);
+      if (background.alpha < TRANSPARENT_ALPHA_THRESHOLD || (!glyph && backgroundLab[0] > 0.93 && chroma < 0.025)) {
+        pixels.push({ color: null });
+        emptyCells += 1;
+        continue;
+      }
+      pixels.push({ color: nearestColor(backgroundLab, PALETTE) });
+      colorMatches += 1;
+    }
+  }
+  return { pixels, recognizedCodes, colorMatches, emptyCells };
+}
+
 function mergePerceptualColors(data: Uint8ClampedArray) {
   const pixelKeys: Array<number | null> = [];
   const histogram = new Map<number, { count: number; red: number; green: number; blue: number }>();
@@ -628,9 +904,29 @@ function drawFittedImage(
   const sourceHeight = crop.height * image.naturalHeight;
   const imageRatio = sourceWidth / sourceHeight;
   const boxRatio = width / height;
+  const sourceCenterX = sourceX + sourceWidth / 2;
+  const sourceCenterY = sourceY + sourceHeight / 2;
+  if (fitMode === "cover") {
+    let centeredSourceWidth = sourceWidth;
+    let centeredSourceHeight = sourceHeight;
+    if (imageRatio > boxRatio) centeredSourceWidth = sourceHeight * boxRatio;
+    else centeredSourceHeight = sourceWidth / boxRatio;
+    ctx.drawImage(
+      image,
+      sourceCenterX - centeredSourceWidth / 2,
+      sourceCenterY - centeredSourceHeight / 2,
+      centeredSourceWidth,
+      centeredSourceHeight,
+      0,
+      0,
+      width,
+      height,
+    );
+    return;
+  }
   let drawWidth = width;
   let drawHeight = height;
-  if ((fitMode === "cover" && imageRatio > boxRatio) || (fitMode === "contain" && imageRatio < boxRatio)) {
+  if (imageRatio < boxRatio) {
     drawHeight = height;
     drawWidth = height * imageRatio;
   } else {
@@ -639,6 +935,9 @@ function drawFittedImage(
   }
   const drawX = (width - drawWidth) / 2;
   const drawY = (height - drawHeight) / 2;
+  // The selected area's center is always the grid's center. With odd grid
+  // sizes it lands on the middle cell; with even sizes it lands on the
+  // intersection of the four middle cells.
   ctx.drawImage(image, sourceX, sourceY, sourceWidth, sourceHeight, drawX, drawY, drawWidth, drawHeight);
 }
 
@@ -682,7 +981,15 @@ export default function Home() {
   const [samplingStrategy, setSamplingStrategy] = useState<SamplingStrategy>("dominant");
   const [cropRect, setCropRect] = useState<CropRect>(FULL_CROP);
   const [draftCropRect, setDraftCropRect] = useState<CropRect>(FULL_CROP);
+  const [cropSelectionMode, setCropSelectionMode] = useState<CropSelectionMode>("free");
   const [cropDialogOpen, setCropDialogOpen] = useState(false);
+  const [cropDialogPurpose, setCropDialogPurpose] = useState<CropDialogPurpose>("source");
+  const [patternImportWidth, setPatternImportWidth] = useState(100);
+  const [patternImportHeight, setPatternImportHeight] = useState(100);
+  const [missingCodeAsEmpty, setMissingCodeAsEmpty] = useState(true);
+  const [patternImportName, setPatternImportName] = useState("");
+  const [patternImportUrl, setPatternImportUrl] = useState("");
+  const [patternImportBusy, setPatternImportBusy] = useState(false);
   const [pixels, setPixels] = useState<Pixel[]>([]);
   const [selectedCodes, setSelectedCodes] = useState<Set<string>>(new Set());
   const [onlySelected, setOnlySelected] = useState(false);
@@ -696,12 +1003,22 @@ export default function Home() {
   const [status, setStatus] = useState("示例图已准备好，可以直接转换");
   const sourceImageRef = useRef<HTMLImageElement | null>(null);
   const fileInputRef = useRef<HTMLInputElement | null>(null);
+  const patternImportInputRef = useRef<HTMLInputElement | null>(null);
+  const patternImportImageRef = useRef<HTMLImageElement | null>(null);
   const cropCanvasRef = useRef<HTMLCanvasElement | null>(null);
   const cropDialogCanvasRef = useRef<HTMLCanvasElement | null>(null);
   const canvasRef = useRef<HTMLCanvasElement | null>(null);
   const patternStageRef = useRef<HTMLDivElement | null>(null);
+  const zoomRef = useRef(zoom);
+  const pendingWheelZoomRef = useRef<{
+    stage: HTMLDivElement;
+    cursorX: number;
+    cursorY: number;
+    canvasX: number;
+    canvasY: number;
+  } | null>(null);
   const cropDialogStageRef = useRef<HTMLDivElement | null>(null);
-  const cropSelectionDragRef = useRef<{ pointerId: number; startX: number; startY: number } | null>(null);
+  const cropSelectionDragRef = useRef<CropSelectionDrag | null>(null);
   const patternDragRef = useRef<{
     pointerId: number;
     x: number;
@@ -834,7 +1151,9 @@ export default function Home() {
   useEffect(() => {
     if (!cropDialogOpen) return;
     const canvas = cropDialogCanvasRef.current;
-    const image = sourceImageRef.current;
+    const image = cropDialogPurpose === "pattern-import"
+      ? patternImportImageRef.current
+      : sourceImageRef.current;
     if (!canvas || !image) return;
     const maximumWidth = 1200;
     const maximumHeight = 760;
@@ -844,7 +1163,7 @@ export default function Home() {
     const ctx = canvas.getContext("2d")!;
     ctx.clearRect(0, 0, canvas.width, canvas.height);
     ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
-  }, [cropDialogOpen, sourceUrl]);
+  }, [cropDialogOpen, cropDialogPurpose, sourceUrl, patternImportUrl]);
 
   useEffect(() => {
     if (!cropDialogOpen) return;
@@ -959,6 +1278,52 @@ export default function Home() {
     }
   }, [pixels, gridWidth, gridHeight, zoom, selectedCodes, onlySelected, showGrid, showCodes]);
 
+  useEffect(() => {
+    zoomRef.current = zoom;
+    const pending = pendingWheelZoomRef.current;
+    if (!pending) return;
+    pendingWheelZoomRef.current = null;
+    const frame = window.requestAnimationFrame(() => {
+      const { stage } = pending;
+      const canvas = canvasRef.current;
+      if (!canvas) return;
+      const stageRect = stage.getBoundingClientRect();
+      const canvasRect = canvas.getBoundingClientRect();
+      const anchorX = canvasRect.left + canvasRect.width * pending.canvasX;
+      const anchorY = canvasRect.top + canvasRect.height * pending.canvasY;
+      stage.scrollLeft += anchorX - (stageRect.left + pending.cursorX);
+      stage.scrollTop += anchorY - (stageRect.top + pending.cursorY);
+    });
+    return () => window.cancelAnimationFrame(frame);
+  }, [zoom]);
+
+  useEffect(() => {
+    const stage = patternStageRef.current;
+    if (!stage) return;
+    const handleWheel = (event: WheelEvent) => {
+      if (pixels.length === 0 || event.deltaY === 0) return;
+      event.preventDefault();
+      const currentZoom = zoomRef.current;
+      const nextZoom = Math.max(3, Math.min(42, currentZoom + (event.deltaY < 0 ? 1 : -1)));
+      if (nextZoom === currentZoom) return;
+      const rect = stage.getBoundingClientRect();
+      const canvasRect = canvasRef.current?.getBoundingClientRect();
+      const cursorX = event.clientX - rect.left;
+      const cursorY = event.clientY - rect.top;
+      pendingWheelZoomRef.current = {
+        stage,
+        cursorX,
+        cursorY,
+        canvasX: canvasRect ? (event.clientX - canvasRect.left) / Math.max(1, canvasRect.width) : 0.5,
+        canvasY: canvasRect ? (event.clientY - canvasRect.top) / Math.max(1, canvasRect.height) : 0.5,
+      };
+      zoomRef.current = nextZoom;
+      setZoom(nextZoom);
+    };
+    stage.addEventListener("wheel", handleWheel, { passive: false });
+    return () => stage.removeEventListener("wheel", handleWheel);
+  }, [pixels.length]);
+
   const handleUpload = (event: ChangeEvent<HTMLInputElement>) => {
     const file = event.target.files?.[0];
     if (!file) return;
@@ -981,7 +1346,38 @@ export default function Home() {
     image.src = url;
   };
 
+  const handlePatternImportUpload = (event: ChangeEvent<HTMLInputElement>) => {
+    const file = event.target.files?.[0];
+    event.target.value = "";
+    if (!file) return;
+    if (!file.type.startsWith("image/")) {
+      setStatus("请选择 JPG、PNG 或 WebP 图纸图片");
+      return;
+    }
+    const url = URL.createObjectURL(file);
+    const image = new Image();
+    image.onload = () => {
+      if (patternImportUrl.startsWith("blob:") && patternImportUrl !== sourceUrl) URL.revokeObjectURL(patternImportUrl);
+      patternImportImageRef.current = image;
+      setPatternImportUrl(url);
+      setPatternImportName(file.name);
+      setPatternImportWidth(gridWidth);
+      setPatternImportHeight(gridHeight);
+      setCropDialogPurpose("pattern-import");
+      setCropSelectionMode("free");
+      setDraftCropRect(FULL_CROP);
+      setCropDialogOpen(true);
+      setStatus("图纸图片已载入，请框选实际网格并填写行列数");
+    };
+    image.onerror = () => {
+      URL.revokeObjectURL(url);
+      setStatus("图纸图片读取失败，请换一张图片重试");
+    };
+    image.src = url;
+  };
+
   const openCropDialog = () => {
+    setCropDialogPurpose("source");
     setDraftCropRect(cropRect);
     setCropDialogOpen(true);
   };
@@ -997,57 +1393,216 @@ export default function Home() {
   };
 
   const updateDraftCrop = (startX: number, startY: number, endX: number, endY: number) => {
-    const targetRatio = Math.max(8, requestedWidth || 8) / Math.max(8, requestedHeight || 8);
-    const image = sourceImageRef.current;
-    if (!image) return;
-    const normalizedRatio = targetRatio * image.naturalHeight / image.naturalWidth;
     const directionX = endX >= startX ? 1 : -1;
     const directionY = endY >= startY ? 1 : -1;
     let width = Math.abs(endX - startX);
     let height = Math.abs(endY - startY);
-    if (width / Math.max(height, 0.0001) > normalizedRatio) width = height * normalizedRatio;
-    else height = width / Math.max(normalizedRatio, 0.0001);
+    if (cropSelectionMode === "square") {
+      const image = cropDialogPurpose === "pattern-import"
+        ? patternImportImageRef.current
+        : sourceImageRef.current;
+      if (!image) return;
+      const normalizedSquareRatio = image.naturalHeight / image.naturalWidth;
+      if (width / Math.max(height, 0.0001) > normalizedSquareRatio) width = height * normalizedSquareRatio;
+      else height = width / Math.max(normalizedSquareRatio, 0.0001);
       const availableWidth = directionX > 0 ? 1 - startX : startX;
       const availableHeight = directionY > 0 ? 1 - startY : startY;
       const scale = Math.min(1, availableWidth / Math.max(width, 0.0001), availableHeight / Math.max(height, 0.0001));
       width *= scale;
       height *= scale;
+    }
+    width = Math.max(0.01, Math.min(1, width));
+    height = Math.max(0.01, Math.min(1, height));
     setDraftCropRect({
-      x: directionX > 0 ? startX : startX - width,
-      y: directionY > 0 ? startY : startY - height,
-      width: Math.max(0.01, width),
-      height: Math.max(0.01, height),
+      x: Math.max(0, Math.min(1 - width, directionX > 0 ? startX : startX - width)),
+      y: Math.max(0, Math.min(1 - height, directionY > 0 ? startY : startY - height)),
+      width,
+      height,
     });
   };
 
+  const pointInsideCrop = (point: { x: number; y: number }) => (
+    (draftCropRect.width < 0.995 || draftCropRect.height < 0.995)
+    &&
+    point.x >= draftCropRect.x
+    && point.x <= draftCropRect.x + draftCropRect.width
+    && point.y >= draftCropRect.y
+    && point.y <= draftCropRect.y + draftCropRect.height
+  );
+
+  const chooseCropSelectionMode = (mode: CropSelectionMode) => {
+    setCropSelectionMode(mode);
+    if (mode !== "square") return;
+    const image = cropDialogPurpose === "pattern-import"
+      ? patternImportImageRef.current
+      : sourceImageRef.current;
+    if (!image) return;
+    const currentCenterX = draftCropRect.x + draftCropRect.width / 2;
+    const currentCenterY = draftCropRect.y + draftCropRect.height / 2;
+    const sideInPixels = Math.min(
+      draftCropRect.width * image.naturalWidth,
+      draftCropRect.height * image.naturalHeight,
+    );
+    const width = sideInPixels / image.naturalWidth;
+    const height = sideInPixels / image.naturalHeight;
+    setDraftCropRect({
+      x: Math.max(0, Math.min(1 - width, currentCenterX - width / 2)),
+      y: Math.max(0, Math.min(1 - height, currentCenterY - height / 2)),
+      width,
+      height,
+    });
+  };
+
+  const resizeDraftCrop = (drag: CropSelectionDrag, point: { x: number; y: number }) => {
+    const handle = drag.handle;
+    if (!handle) return;
+    const origin = drag.origin;
+    if (cropSelectionMode === "square") {
+      const anchorX = handle.includes("w") ? origin.x + origin.width : origin.x;
+      const anchorY = handle.includes("n") ? origin.y + origin.height : origin.y;
+      updateDraftCrop(anchorX, anchorY, point.x, point.y);
+      return;
+    }
+    const minimumSize = 0.03;
+    let left = origin.x;
+    let top = origin.y;
+    let right = origin.x + origin.width;
+    let bottom = origin.y + origin.height;
+    if (handle.includes("w")) left = Math.max(0, Math.min(right - minimumSize, point.x));
+    if (handle.includes("e")) right = Math.min(1, Math.max(left + minimumSize, point.x));
+    if (handle.includes("n")) top = Math.max(0, Math.min(bottom - minimumSize, point.y));
+    if (handle.includes("s")) bottom = Math.min(1, Math.max(top + minimumSize, point.y));
+    setDraftCropRect({ x: left, y: top, width: right - left, height: bottom - top });
+  };
+
   const handleCropSelectionDown = (event: React.PointerEvent<HTMLDivElement>) => {
     if (event.button !== 0) return;
     const point = cropPoint(event);
     event.currentTarget.setPointerCapture(event.pointerId);
-    cropSelectionDragRef.current = { pointerId: event.pointerId, startX: point.x, startY: point.y };
-    setDraftCropRect({ x: point.x, y: point.y, width: 0.01, height: 0.01 });
+    const resizeHandle = (event.target as HTMLElement).dataset.cropHandle as CropResizeHandle | undefined;
+    if (resizeHandle) {
+      cropSelectionDragRef.current = {
+        pointerId: event.pointerId,
+        mode: "resize",
+        startX: point.x,
+        startY: point.y,
+        origin: draftCropRect,
+        handle: resizeHandle,
+      };
+      event.currentTarget.classList.add("is-resizing-selection");
+      return;
+    }
+    if (pointInsideCrop(point) && draftCropRect.width >= 0.03 && draftCropRect.height >= 0.03) {
+      cropSelectionDragRef.current = {
+        pointerId: event.pointerId,
+        mode: "move",
+        startX: point.x,
+        startY: point.y,
+        origin: draftCropRect,
+      };
+      event.currentTarget.classList.add("is-moving-selection");
+      return;
+    }
+    cropSelectionDragRef.current = {
+      pointerId: event.pointerId,
+      mode: "create",
+      startX: point.x,
+      startY: point.y,
+      origin: draftCropRect,
+    };
+    setDraftCropRect({ x: Math.min(0.99, point.x), y: Math.min(0.99, point.y), width: 0.01, height: 0.01 });
   };
 
   const handleCropSelectionMove = (event: React.PointerEvent<HTMLDivElement>) => {
     const drag = cropSelectionDragRef.current;
-    if (!drag || drag.pointerId !== event.pointerId) return;
     const point = cropPoint(event);
+    if (!drag) {
+      event.currentTarget.classList.toggle("can-move-selection", pointInsideCrop(point));
+      return;
+    }
+    if (drag.pointerId !== event.pointerId) return;
+    if (drag.mode === "resize") {
+      resizeDraftCrop(drag, point);
+      return;
+    }
+    if (drag.mode === "move") {
+      const x = Math.max(0, Math.min(1 - drag.origin.width, drag.origin.x + point.x - drag.startX));
+      const y = Math.max(0, Math.min(1 - drag.origin.height, drag.origin.y + point.y - drag.startY));
+      setDraftCropRect({ ...drag.origin, x, y });
+      return;
+    }
     updateDraftCrop(drag.startX, drag.startY, point.x, point.y);
   };
 
   const handleCropSelectionEnd = (event: React.PointerEvent<HTMLDivElement>) => {
     if (cropSelectionDragRef.current?.pointerId === event.pointerId) cropSelectionDragRef.current = null;
+    event.currentTarget.classList.remove("is-moving-selection");
+    event.currentTarget.classList.remove("is-resizing-selection");
     if (event.currentTarget.hasPointerCapture(event.pointerId)) event.currentTarget.releasePointerCapture(event.pointerId);
   };
 
+  const confirmPatternImport = async () => {
+    const image = patternImportImageRef.current;
+    const width = Math.max(1, Math.min(256, Math.round(patternImportWidth)));
+    const height = Math.max(1, Math.min(256, Math.round(patternImportHeight)));
+    if (!image) {
+      setStatus("请先选择要导入的图纸图片");
+      return;
+    }
+    if (draftCropRect.width < 0.03 || draftCropRect.height < 0.03) {
+      setStatus("网格区域太小，请重新框选");
+      return;
+    }
+    setPatternImportBusy(true);
+    setStatus("正在读取 MARD 编码并匹配格子底色…");
+    await new Promise<void>((resolve) => window.requestAnimationFrame(() => resolve()));
+    try {
+      const result = importMardPatternImage(image, draftCropRect, width, height, missingCodeAsEmpty);
+      const actualColors = new Set(result.pixels.flatMap(({ color }) => color ? [color.code] : [])).size;
+      const beadCount = result.pixels.reduce((total, { color }) => total + (color ? 1 : 0), 0);
+      setPixels(result.pixels);
+      setGridWidth(width);
+      setGridHeight(height);
+      setRequestedWidth(width);
+      setRequestedHeight(height);
+      setSelectedCodes(new Set());
+      setCropRect(draftCropRect);
+      sourceImageRef.current = image;
+      setSourceUrl(patternImportUrl);
+      setSourceName(`导入图纸：${patternImportName}`);
+      setCropDialogOpen(false);
+      setStatus(`已导入 ${width} × ${height} · 读取编码 ${result.recognizedCodes} 格 · 底色匹配 ${result.colorMatches} 格 · 空白 ${result.emptyCells} 格`);
+      logUsage({
+        event: "pattern_import",
+        width,
+        height,
+        recognized_codes: result.recognizedCodes,
+        color_matches: result.colorMatches,
+        transparent_cells: result.emptyCells,
+        actual_colors: actualColors,
+        bead_count: beadCount,
+        missing_code_as_empty: missingCodeAsEmpty,
+      });
+      window.requestAnimationFrame(() => document.getElementById("pattern-preview")?.scrollIntoView({ behavior: "smooth", block: "start" }));
+    } catch {
+      setStatus("图纸识别失败，请确认选框与网格行列准确后重试");
+    } finally {
+      setPatternImportBusy(false);
+    }
+  };
+
   const confirmCrop = () => {
     if (draftCropRect.width < 0.03 || draftCropRect.height < 0.03) {
       setStatus("框选区域太小，请在大图上拖出更大的选框");
       return;
     }
+    if (cropDialogPurpose === "pattern-import") {
+      void confirmPatternImport();
+      return;
+    }
     setCropRect(draftCropRect);
     setCropDialogOpen(false);
-    setStatus("取景区域已更新，点击“重新转换”生成图纸");
+    convertImage(sourceImageRef.current, draftCropRect);
   };
 
   const toggleColor = (code: string) => {
@@ -1202,12 +1757,138 @@ export default function Home() {
   }, [history, historyQuery]);
 
   const exportPng = () => {
-    const canvas = canvasRef.current;
-    if (!canvas) return;
+    if (!pixels.length) return;
+    const longestSide = Math.max(gridWidth, gridHeight);
+    const maximumExportSide = 8192;
+    const preferredCell = longestSide <= 120 ? 56 : longestSide <= 180 ? 40 : 32;
+    const cell = Math.max(24, Math.min(preferredCell, Math.floor((maximumExportSide - 72) / longestSide)));
+    const ruler = Math.max(48, cell + 16);
+    const gridPixelWidth = gridWidth * cell;
+    const gridPixelHeight = gridHeight * cell;
+    const canvasWidth = ruler + gridPixelWidth;
+    const legendPadding = 18;
+    const legendItemWidth = 128;
+    const legendItemHeight = 42;
+    const legendColumns = Math.max(1, Math.floor((canvasWidth - legendPadding * 2) / legendItemWidth));
+    const legendRows = Math.ceil(usedColors.length / legendColumns);
+    const legendHeight = usedColors.length > 0 ? legendPadding * 2 + legendRows * legendItemHeight : 0;
+    const canvas = document.createElement("canvas");
+    canvas.width = canvasWidth;
+    canvas.height = ruler + gridPixelHeight + legendHeight;
+    const ctx = canvas.getContext("2d");
+    if (!ctx) return;
+
+    ctx.fillStyle = "#ffffff";
+    ctx.fillRect(0, 0, canvas.width, canvas.height);
+    ctx.fillStyle = "#f0eee7";
+    ctx.fillRect(ruler, 0, gridPixelWidth, ruler);
+    ctx.fillRect(0, ruler, ruler, gridPixelHeight);
+    ctx.strokeStyle = "rgba(32,38,36,.34)";
+    ctx.lineWidth = 1;
+    ctx.font = `700 ${Math.max(9, Math.floor(cell * 0.32))}px Arial`;
+    ctx.fillStyle = "#45504b";
+    ctx.textAlign = "center";
+    ctx.textBaseline = "middle";
+
+    for (let column = 0; column < gridWidth; column += 1) {
+      const x = ruler + column * cell;
+      ctx.strokeRect(x + 0.5, 0.5, cell - 1, ruler - 1);
+      ctx.fillText(String(column + 1), x + cell / 2, ruler / 2);
+    }
+    for (let row = 0; row < gridHeight; row += 1) {
+      const y = ruler + row * cell;
+      ctx.strokeRect(0.5, y + 0.5, ruler - 1, cell - 1);
+      ctx.fillText(rowNumberToLetters(row + 1), ruler / 2, y + cell / 2);
+    }
+
+    pixels.forEach(({ color }, index) => {
+      const column = index % gridWidth;
+      const row = Math.floor(index / gridWidth);
+      const x = ruler + column * cell;
+      const y = ruler + row * cell;
+      if (color) {
+        ctx.fillStyle = color.hex;
+        ctx.fillRect(x, y, cell, cell);
+        const label = color.code;
+        const [red, green, blue] = hexToRgb(color.hex);
+        ctx.fillStyle = red * 0.299 + green * 0.587 + blue * 0.114 > 160 ? "#18211d" : "#ffffff";
+        let fontSize = Math.max(8, Math.floor(cell * 0.31));
+        ctx.font = `700 ${fontSize}px Arial`;
+        while (fontSize > 8 && ctx.measureText(label).width > cell - 5) {
+          fontSize -= 1;
+          ctx.font = `700 ${fontSize}px Arial`;
+        }
+        ctx.textAlign = "center";
+        ctx.textBaseline = "middle";
+        ctx.fillText(label, x + cell / 2, y + cell / 2);
+      }
+      ctx.strokeStyle = "rgba(32,38,36,.24)";
+      ctx.lineWidth = 1;
+      ctx.strokeRect(x + 0.5, y + 0.5, cell - 1, cell - 1);
+    });
+
+    ctx.strokeStyle = "rgba(32,38,36,.58)";
+    ctx.lineWidth = 2;
+    for (let column = 5; column < gridWidth; column += 5) {
+      const x = ruler + column * cell;
+      ctx.beginPath();
+      ctx.moveTo(x, ruler);
+      ctx.lineTo(x, ruler + gridPixelHeight);
+      ctx.stroke();
+    }
+    for (let row = 5; row < gridHeight; row += 5) {
+      const y = ruler + row * cell;
+      ctx.beginPath();
+      ctx.moveTo(ruler, y);
+      ctx.lineTo(ruler + gridPixelWidth, y);
+      ctx.stroke();
+    }
+    ctx.strokeStyle = "#202624";
+    ctx.lineWidth = 2;
+    ctx.strokeRect(ruler, ruler, gridPixelWidth, gridPixelHeight);
+
+    const legendTop = ruler + gridPixelHeight;
+    if (usedColors.length > 0) {
+      ctx.strokeStyle = "#d7d2c7";
+      ctx.lineWidth = 1;
+      ctx.beginPath();
+      ctx.moveTo(0, legendTop + 0.5);
+      ctx.lineTo(canvasWidth, legendTop + 0.5);
+      ctx.stroke();
+      usedColors.forEach((color, index) => {
+        const column = index % legendColumns;
+        const row = Math.floor(index / legendColumns);
+        const x = legendPadding + column * legendItemWidth;
+        const y = legendTop + legendPadding + row * legendItemHeight;
+        ctx.fillStyle = color.hex;
+        ctx.beginPath();
+        ctx.arc(x + 12, y + 13, 10, 0, Math.PI * 2);
+        ctx.fill();
+        ctx.strokeStyle = "rgba(32,38,36,.28)";
+        ctx.lineWidth = 1;
+        ctx.stroke();
+        ctx.fillStyle = "#202624";
+        ctx.font = "700 13px Arial";
+        ctx.textAlign = "left";
+        ctx.textBaseline = "middle";
+        ctx.fillText(`${color.code} · ${color.count}颗`, x + 28, y + 13);
+      });
+    }
+
+    canvas.toBlob((blob) => {
+      if (!blob) {
+        setStatus("PNG 生成失败，请减少图纸格数后重试");
+        return;
+      }
+      const url = URL.createObjectURL(blob);
       const link = document.createElement("a");
       link.download = `拼豆图纸-${gridWidth}x${gridHeight}.png`;
-    link.href = canvas.toDataURL("image/png");
+      link.href = url;
       link.click();
+      window.setTimeout(() => URL.revokeObjectURL(url), 1000);
+      setStatus(`高清 PNG 已生成：${canvas.width} × ${canvas.height}px，底部图例包含色号和用量`);
+      logUsage({ event: "download_png", width: gridWidth, height: gridHeight, colors: usedColors.length, export_width: canvas.width, export_height: canvas.height });
+    }, "image/png");
   };
 
   return (
@@ -1245,6 +1926,10 @@ export default function Home() {
 
           <button className="crop-select-button" onClick={openCropDialog}>选择取景区域</button>
           <button className="reset-crop" onClick={() => { setCropRect(FULL_CROP); setDraftCropRect(FULL_CROP); setStatus("已恢复使用整张图片"); }}>使用整张图片</button>
+          {ENABLE_PATTERN_IMPORT && <>
+            <button className="pattern-import-button" onClick={() => patternImportInputRef.current?.click()}>导入现成图纸</button>
+            <input ref={patternImportInputRef} className="file-input pattern-import-file" type="file" accept="image/png,image/jpeg,image/webp" onChange={handlePatternImportUpload} />
+          </>}
 
           <div className="field-row">
             <label><span>横向格数</span><input type="number" min="8" max="256" value={requestedWidth} onChange={(e) => setRequestedWidth(Number(e.target.value))} /></label>
@@ -1274,6 +1959,7 @@ export default function Home() {
             <div
               className="canvas-stage"
               ref={patternStageRef}
+              title="鼠标位于预览区时，可滚动滚轮缩放图纸"
             >
               <div className="canvas-wrap">
                 <canvas
@@ -1304,7 +1990,7 @@ export default function Home() {
               <label><input type="checkbox" checked={showGrid} onChange={(e) => setShowGrid(e.target.checked)} /> 网格</label>
               <label><input type="checkbox" checked={showCodes} onChange={(e) => setShowCodes(e.target.checked)} /> 格内编号</label>
               <button className="save-button" onClick={savePattern}>保存历史</button>
-              <button onClick={exportPng}>下载 PNG</button>
+              <button onClick={exportPng}>下载高清 PNG</button>
             </div>
           </div>
           <div className="pattern-legend">
@@ -1341,9 +2027,28 @@ export default function Home() {
       {cropDialogOpen && <div className="crop-dialog-backdrop" role="presentation" onMouseDown={(event) => { if (event.target === event.currentTarget) setCropDialogOpen(false); }}>
         <section className="crop-dialog" role="dialog" aria-modal="true" aria-labelledby="crop-dialog-title">
           <div className="crop-dialog-header">
-            <div><p className="section-kicker">IMAGE CROP</p><h2 id="crop-dialog-title">框选需要转换的区域</h2><p>在大图上按住并拖动。选框比例为 {Math.max(8, requestedWidth || 8)} : {Math.max(8, requestedHeight || 8)}。</p></div>
+            {cropDialogPurpose === "pattern-import"
+              ? <div><p className="section-kicker">MARD PATTERN IMPORT</p><h2 id="crop-dialog-title">导入现成 MARD 图纸</h2><p>选框边缘请贴合实际格子区域，不要包含外侧行列标尺；再填写网格的列数和行数。</p></div>
+              : <div><p className="section-kicker">IMAGE CROP</p><h2 id="crop-dialog-title">框选需要转换的区域</h2><p>框内拖动可移动，控制点可调整大小；生成格子时以所选区域正中心为采样基准。</p></div>}
             <button aria-label="关闭取景窗口" onClick={() => setCropDialogOpen(false)}>×</button>
           </div>
+          <div className="crop-mode-bar">
+            {cropDialogPurpose === "pattern-import" ? <>
+              <div className="pattern-import-dimensions">
+                <label><span>横向列数</span><input aria-label="导入图纸横向列数" type="number" min="1" max="256" value={patternImportWidth} onChange={(event) => setPatternImportWidth(Number(event.target.value))} /></label>
+                <b>×</b>
+                <label><span>纵向行数</span><input aria-label="导入图纸纵向行数" type="number" min="1" max="256" value={patternImportHeight} onChange={(event) => setPatternImportHeight(Number(event.target.value))} /></label>
+              </div>
+              <label className="pattern-import-empty-option"><input type="checkbox" checked={missingCodeAsEmpty} onChange={(event) => setMissingCodeAsEmpty(event.target.checked)} /> 没有识别到 MARD 编码的格子视为空白</label>
+            </> : <>
+              <span>选框形状</span>
+              <div className="crop-mode-switch" role="group" aria-label="选框形状">
+                <button className={cropSelectionMode === "free" ? "active" : ""} aria-pressed={cropSelectionMode === "free"} onClick={() => chooseCropSelectionMode("free")}>自由矩形</button>
+                <button className={cropSelectionMode === "square" ? "active" : ""} aria-pressed={cropSelectionMode === "square"} onClick={() => chooseCropSelectionMode("square")}>正方形</button>
+              </div>
+            </>}
+            <span className="crop-size-readout">当前选框：{Math.round(draftCropRect.width * 100)}% × {Math.round(draftCropRect.height * 100)}%</span>
+          </div>
           <div className="crop-dialog-scroll">
             <div
               className="crop-dialog-stage"
@@ -1352,20 +2057,33 @@ export default function Home() {
               onPointerMove={handleCropSelectionMove}
               onPointerUp={handleCropSelectionEnd}
               onPointerCancel={handleCropSelectionEnd}
+              onPointerLeave={(event) => { if (!cropSelectionDragRef.current) event.currentTarget.classList.remove("can-move-selection"); }}
             >
               <canvas ref={cropDialogCanvasRef} aria-label="可框选的原始大图" />
               <div className="crop-selection-mask crop-selection-top" style={{ height: `${draftCropRect.y * 100}%` }} />
               <div className="crop-selection-mask crop-selection-left" style={{ top: `${draftCropRect.y * 100}%`, width: `${draftCropRect.x * 100}%`, height: `${draftCropRect.height * 100}%` }} />
               <div className="crop-selection-mask crop-selection-right" style={{ top: `${draftCropRect.y * 100}%`, left: `${(draftCropRect.x + draftCropRect.width) * 100}%`, right: 0, height: `${draftCropRect.height * 100}%` }} />
               <div className="crop-selection-mask crop-selection-bottom" style={{ top: `${(draftCropRect.y + draftCropRect.height) * 100}%` }} />
-              <div className="crop-selection-box" style={{ left: `${draftCropRect.x * 100}%`, top: `${draftCropRect.y * 100}%`, width: `${draftCropRect.width * 100}%`, height: `${draftCropRect.height * 100}%` }} />
+              <div className="crop-selection-box" style={{ left: `${draftCropRect.x * 100}%`, top: `${draftCropRect.y * 100}%`, width: `${draftCropRect.width * 100}%`, height: `${draftCropRect.height * 100}%` }}>
+                {cropDialogPurpose === "pattern-import" && patternImportWidth > 0 && patternImportHeight > 0 && <i
+                  className="pattern-import-grid-overlay"
+                  style={{ backgroundSize: `${100 / patternImportWidth}% 100%, 100% ${100 / patternImportHeight}%` }}
+                  aria-hidden="true"
+                />}
+                {(["nw", "ne", "sw", "se"] as CropResizeHandle[]).map((handle) => <i key={handle} className={`crop-resize-handle handle-${handle}`} data-crop-handle={handle} aria-hidden="true" />)}
+                {cropSelectionMode === "free" && (["n", "s", "e", "w"] as CropResizeHandle[]).map((handle) => <i key={handle} className={`crop-resize-handle crop-edge-handle handle-${handle}`} data-crop-handle={handle} aria-hidden="true" />)}
+              </div>
             </div>
           </div>
           <div className="crop-dialog-actions">
-            <button onClick={() => setDraftCropRect(FULL_CROP)}>选择整张图</button>
-            <span>从左上角拖向右下角即可重新框选</span>
+            <button onClick={() => { setCropSelectionMode("free"); setDraftCropRect(FULL_CROP); }}>选择整张图</button>
+            <span>{cropDialogPurpose === "pattern-import" ? "对齐越准确，格内编码与底色识别越可靠" : "框外拖动可重选，框内拖动可移动，控制点可缩放"}</span>
             <button onClick={() => setCropDialogOpen(false)}>取消</button>
-            <button className="confirm" disabled={draftCropRect.width < 0.03 || draftCropRect.height < 0.03} onClick={confirmCrop}>使用此区域</button>
+            <button
+              className="confirm"
+              disabled={patternImportBusy || draftCropRect.width < 0.03 || draftCropRect.height < 0.03 || (cropDialogPurpose === "pattern-import" && (patternImportWidth < 1 || patternImportWidth > 256 || patternImportHeight < 1 || patternImportHeight > 256))}
+              onClick={confirmCrop}
+            >{cropDialogPurpose === "pattern-import" ? (patternImportBusy ? "正在识别…" : "识别并导入") : "使用此区域"}</button>
           </div>
         </section>
       </div>}
@@ -1375,11 +2093,8 @@ export default function Home() {
           <div className="search-box"><span>⌕</span><input value={historyQuery} onChange={(e) => setHistoryQuery(e.target.value)} placeholder="按名称或 32x32 查询" /></div>
         </div>
         {filteredHistory.length ? <div className="history-grid">{filteredHistory.map((entry) => {
-          const colorCounts = new Map<string, number>();
-          entry.codes.forEach((code) => { if (code) colorCounts.set(code, (colorCounts.get(code) ?? 0) + 1); });
-          const topCodes = [...colorCounts.entries()].sort((a, b) => b[1] - a[1]).slice(0, 6);
           return <article className="history-card" key={entry.id}>
-            <div className="history-swatches">{topCodes.map(([code, count]) => <i key={code} style={{ backgroundColor: PALETTE.find((color) => color.code === code)?.hex, flexGrow: count }} />)}</div>
+            <HistoryThumbnail entry={entry} />
             <div><h3>{entry.name}</h3><p>{entry.width} × {entry.height} · {new Date(entry.savedAt).toLocaleString("zh-CN", { hour12: false })}</p></div>
             <div className="history-actions"><button onClick={() => restorePattern(entry)}>打开</button><button onClick={() => removePattern(entry.id)}>删除</button></div>
           </article>;

deploy/server.mjs

@@ -1,4 +1,5 @@
-import { appendFile, createReadStream, existsSync, mkdirSync, statSync } from "node:fs";
+import { createReadStream, existsSync, mkdirSync, statSync } from "node:fs";
+import { appendFile } from "node:fs/promises";
 import { createHash } from "node:crypto";
 import { createServer } from "node:http";
 import { extname, join, normalize } from "node:path";
@@ -9,6 +10,13 @@ const port = Number(process.env.APP_PORT || 3200);
 const dataDirectory = process.env.DATA_DIR || join(process.cwd(), "data");
 const usageLogPath = join(dataDirectory, "usage.jsonl");
 mkdirSync(dataDirectory, { recursive: true });
+
+function formatChinaTimestamp(date) {
+  return new Date(date.getTime() + 8 * 60 * 60 * 1000)
+    .toISOString()
+    .replace("Z", "+08:00");
+}
+
 const mimeTypes = {
   ".css": "text/css; charset=utf-8",
   ".html": "text/html; charset=utf-8",
@@ -40,8 +48,10 @@ function writeUsageLog(request, response) {
         sendJson(response, 400, { error: "Invalid event" });
         return;
       }
+      const now = new Date();
       const entry = {
-        timestamp: new Date().toISOString(),
+        timestamp: now.toISOString(),
+        timestamp_cn: formatChinaTimestamp(now),
         event: input.event,
         client_hash: request.headers["x-forwarded-for"] || request.socket.remoteAddress
           ? createHash("sha256").update(String(request.headers["x-forwarded-for"] || request.socket.remoteAddress)).digest("hex").slice(0, 16)

out/.vite/manifest.json

@@ -11,7 +11,7 @@
     "name": "rolldown-runtime"
   },
   "app/page.tsx": {
-    "file": "_next/static/chunks/page-CNQA87Lx.js",
+    "file": "_next/static/chunks/page-DBRuBfy6.js",
     "name": "page",
     "src": "app/page.tsx",
     "isDynamicEntry": true,
@@ -21,7 +21,7 @@
     ]
   },
   "node_modules/vinext/dist/shims/layout-segment-context.js": {
-    "file": "_next/static/chunks/layout-segment-context-Bf1cBuVr.js",
+    "file": "_next/static/chunks/layout-segment-context-rAphBSzO.js",
     "name": "layout-segment-context",
     "src": "node_modules/vinext/dist/shims/layout-segment-context.js",
     "isDynamicEntry": true,
@@ -32,7 +32,7 @@
     ]
   },
   "virtual:vinext-app-browser-entry": {
-    "file": "_next/static/chunks/index-DAoL2pdt.js",
+    "file": "_next/static/chunks/index-VFVBI02U.js",
     "name": "index",
     "src": "virtual:vinext-app-browser-entry",
     "isEntry": true,

out/404.html

@@ -1,2 +1,2 @@
-<!DOCTYPE html><html lang="zh-CN"><head><meta charSet="utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="/_next/static/css/index.BD45GRB0.css" data-rsc-css-href="/_next/static/css/index.BD45GRB0.css" data-precedence="vite-rsc/importer-resources"/><link rel="modulepreload" fetchPriority="low" href="/_next/static/chunks/index-DAoL2pdt.js"/><script src="/_next/static/chunks/rolldown-runtime-C60lm6uB.js" type="module" async=""></script><script src="/_next/static/chunks/framework-BgSIrAUN.js" type="module" async=""></script><meta name="robots" content="noindex"/><title>豆格工坊｜图片转拼豆图纸</title><meta name="description" content="在浏览器中把图片转换为拼豆像素图纸，按色号、名称或像素格筛选颜色。"/><title>404: This page could not be found.</title><script>Object.assign(((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}),{params:{},nav:{"pathname":"/__vinext_nonexistent_for_404__","searchParams":[]}})</script><link rel="modulepreload" href="/_next/static/chunks/index-DAoL2pdt.js" />
-</head><body><div style="font-family:system-ui,&quot;Segoe UI&quot;,Roboto,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;;height:100vh;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center"><div><style>body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}</style><h1 class="next-error-h1" style="display:inline-block;margin:0 20px 0 0;padding:0 23px 0 0;font-size:24px;font-weight:500;vertical-align:top;line-height:49px">404</h1><div style="display:inline-block"><h2 style="font-size:14px;font-weight:400;line-height:49px;margin:0">This page could not be found.</h2></div></div></div><script type="module" src="/_next/static/chunks/index-DAoL2pdt.js" id="_R_" async=""></script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).rsc.push("1:\"$Sreact.fragment\"\n")</script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).rsc.push(":HL[\"/_next/static/css/index.BD45GRB0.css\",\"style\"     ]\n")</script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).rsc.push("0:{\"__route\":\"route:/__vinext_nonexistent_for_404__\",\"__interceptionContext\":null,\"__layoutIds\":[],\"__rootLayout\":null,\"route:/__vinext_nonexistent_for_404__\":[[[\"$\",\"link\",\"css:/_next/static/css/index.BD45GRB0.css\",{\"rel\":\"stylesheet\",\"precedence\":\"vite-rsc/importer-resources\",\"href\":\"/_next/static/css/index.BD45GRB0.css\",\"data-rsc-css-href\":\"/_next/static/css/index.BD45GRB0.css\"}],\"$undefined\"],[\"$\",\"html\",null,{\"lang\":\"zh-CN\",\"children\":[\"$\",\"body\",null,{\"children\":[[\"$\",\"meta\",\"charset\",{\"charSet\":\"utf-8\"}],[\"$\",\"meta\",\"robots\",{\"name\":\"robots\",\"content\":\"noindex\"}],[\"$\",\"$1\",\"metadata\",{\"children\":[[\"$\",\"title\",\"0\",{\"children\":\"豆格工坊｜图片转拼豆图纸\"}],[\"$\",\"meta\",\"1\",{\"name\":\"description\",\"content\":\"在浏览器中把图片转换为拼豆像素图纸，按色号、名称或像素格筛选颜色。\"}]]}],[\"$\",\"$1\",\"viewport\",{\"children\":[[\"$\",\"meta\",\"0\",{\"name\":\"viewport\",\"content\":\"width=device-width, initial-scale=1\"}]]}],[[\"$\",\"title\",null,{\"children\":\"404: This page could not be found.\"}],[\"$\",\"div\",null,{\"style\":{\"fontFamily\":\"system-ui,\\\"Segoe UI\\\",Roboto,Helvetica,Arial,sans-serif,\\\"Apple Color Emoji\\\",\\\"Segoe UI Emoji\\\"\",\"height\":\"100vh\",\"textAlign\":\"center\",\"display\":\"flex\",\"flexDirection\":\"column\",\"alignItems\":\"center\",\"justifyContent\":\"center\"},\"children\":[\"$\",\"div\",null,{\"children\":[[\"$\",\"style\",null,{\"dangerouslySetInnerHTML\":{\"__html\":\"body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}\"}}],[\"$\",\"h1\",null,{\"className\":\"next-error-h1\",\"style\":{\"display\":\"inline-block\",\"margin\":\"0 20px 0 0\",\"padding\":\"0 23px 0 0\",\"fontSize\":24,\"fontWeight\":500,\"verticalAlign\":\"top\",\"lineHeight\":\"49px\"},\"children\":404}],[\"$\",\"div\",null,{\"style\":{\"display\":\"inline-block\"},\"children\":[\"$\",\"h2\",null,{\"style\":{\"fontSize\":14,\"fontWeight\":400,\"lineHeight\":\"49px\",\"margin\":0},\"children\":\"This page could not be found.\"}]}]]}]}]]]}]}]]}\n")</script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).done=true</script></body></html>
+<!DOCTYPE html><html lang="zh-CN"><head><meta charSet="utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="/_next/static/css/index.B4qFKCfT.css" data-rsc-css-href="/_next/static/css/index.B4qFKCfT.css" data-precedence="vite-rsc/importer-resources"/><link rel="modulepreload" fetchPriority="low" href="/_next/static/chunks/index-VFVBI02U.js"/><script src="/_next/static/chunks/rolldown-runtime-C60lm6uB.js" type="module" async=""></script><script src="/_next/static/chunks/framework-BgSIrAUN.js" type="module" async=""></script><meta name="robots" content="noindex"/><title>豆格工坊｜图片转拼豆图纸</title><meta name="description" content="在浏览器中把图片转换为拼豆像素图纸，按色号、名称或像素格筛选颜色。"/><title>404: This page could not be found.</title><script>Object.assign(((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}),{params:{},nav:{"pathname":"/__vinext_nonexistent_for_404__","searchParams":[]}})</script><link rel="modulepreload" href="/_next/static/chunks/index-VFVBI02U.js" />
+</head><body><div style="font-family:system-ui,&quot;Segoe UI&quot;,Roboto,Helvetica,Arial,sans-serif,&quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;;height:100vh;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center"><div><style>body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}</style><h1 class="next-error-h1" style="display:inline-block;margin:0 20px 0 0;padding:0 23px 0 0;font-size:24px;font-weight:500;vertical-align:top;line-height:49px">404</h1><div style="display:inline-block"><h2 style="font-size:14px;font-weight:400;line-height:49px;margin:0">This page could not be found.</h2></div></div></div><script type="module" src="/_next/static/chunks/index-VFVBI02U.js" id="_R_" async=""></script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).rsc.push("1:\"$Sreact.fragment\"\n")</script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).rsc.push(":HL[\"/_next/static/css/index.B4qFKCfT.css\",\"style\"     ]\n")</script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).rsc.push("0:{\"__route\":\"route:/__vinext_nonexistent_for_404__\",\"__interceptionContext\":null,\"__layoutIds\":[],\"__rootLayout\":null,\"route:/__vinext_nonexistent_for_404__\":[[[\"$\",\"link\",\"css:/_next/static/css/index.B4qFKCfT.css\",{\"rel\":\"stylesheet\",\"precedence\":\"vite-rsc/importer-resources\",\"href\":\"/_next/static/css/index.B4qFKCfT.css\",\"data-rsc-css-href\":\"/_next/static/css/index.B4qFKCfT.css\"}],\"$undefined\"],[\"$\",\"html\",null,{\"lang\":\"zh-CN\",\"children\":[\"$\",\"body\",null,{\"children\":[[\"$\",\"meta\",\"charset\",{\"charSet\":\"utf-8\"}],[\"$\",\"meta\",\"robots\",{\"name\":\"robots\",\"content\":\"noindex\"}],[\"$\",\"$1\",\"metadata\",{\"children\":[[\"$\",\"title\",\"0\",{\"children\":\"豆格工坊｜图片转拼豆图纸\"}],[\"$\",\"meta\",\"1\",{\"name\":\"description\",\"content\":\"在浏览器中把图片转换为拼豆像素图纸，按色号、名称或像素格筛选颜色。\"}]]}],[\"$\",\"$1\",\"viewport\",{\"children\":[[\"$\",\"meta\",\"0\",{\"name\":\"viewport\",\"content\":\"width=device-width, initial-scale=1\"}]]}],[[\"$\",\"title\",null,{\"children\":\"404: This page could not be found.\"}],[\"$\",\"div\",null,{\"style\":{\"fontFamily\":\"system-ui,\\\"Segoe UI\\\",Roboto,Helvetica,Arial,sans-serif,\\\"Apple Color Emoji\\\",\\\"Segoe UI Emoji\\\"\",\"height\":\"100vh\",\"textAlign\":\"center\",\"display\":\"flex\",\"flexDirection\":\"column\",\"alignItems\":\"center\",\"justifyContent\":\"center\"},\"children\":[\"$\",\"div\",null,{\"children\":[[\"$\",\"style\",null,{\"dangerouslySetInnerHTML\":{\"__html\":\"body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}\"}}],[\"$\",\"h1\",null,{\"className\":\"next-error-h1\",\"style\":{\"display\":\"inline-block\",\"margin\":\"0 20px 0 0\",\"padding\":\"0 23px 0 0\",\"fontSize\":24,\"fontWeight\":500,\"verticalAlign\":\"top\",\"lineHeight\":\"49px\"},\"children\":404}],[\"$\",\"div\",null,{\"style\":{\"display\":\"inline-block\"},\"children\":[\"$\",\"h2\",null,{\"style\":{\"fontSize\":14,\"fontWeight\":400,\"lineHeight\":\"49px\",\"margin\":0},\"children\":\"This page could not be found.\"}]}]]}]}]]]}]}]]}\n")</script><script>((self[Symbol.for("vinext.navigationRuntime")]??={bootstrap:{routeManifest:null},functions:{}}).bootstrap.rsc??={rsc:[]}).done=true</script></body></html>

out/_next/static/chunks/layout-segment-context-rAphBSzO.js

@@ -1 +1 @@
-import{r as e}from"./rolldown-runtime-C60lm6uB.js";import{r as t}from"./framework-BgSIrAUN.js";import{t as n}from"./index-DAoL2pdt.js";var r=e(t(),1),i=new Map;function a(e,t){return e?{...e,...t}:t}function o({providerId:e,segmentMap:t,children:o}){let s=(0,r.useRef)(null),c=n(),l=a(s.current??(e?i.get(e)??null:null),t);return(0,r.useEffect)(()=>{s.current=l,e&&i.set(e,l)},[l,e]),c?(0,r.createElement)(c.Provider,{value:l},o):o}export{o as LayoutSegmentProvider,a as mergeLayoutSegmentMap};
+import{r as e}from"./rolldown-runtime-C60lm6uB.js";import{r as t}from"./framework-BgSIrAUN.js";import{t as n}from"./index-VFVBI02U.js";var r=e(t(),1),i=new Map;function a(e,t){return e?{...e,...t}:t}function o({providerId:e,segmentMap:t,children:o}){let s=(0,r.useRef)(null),c=n(),l=a(s.current??(e?i.get(e)??null:null),t);return(0,r.useEffect)(()=>{s.current=l,e&&i.set(e,l)},[l,e]),c?(0,r.createElement)(c.Provider,{value:l},o):o}export{o as LayoutSegmentProvider,a as mergeLayoutSegmentMap};

out/index.rsc

@@ -6,8 +6,8 @@
 7:I["8c0f216c4604",[],"Slot",1]
 8:I["9276801271d6",[],"AppRouterScrollTarget",1]
 9:I["593f344dc510",[],"RedirectBoundary",1]
-:HL["/_next/static/css/index.BD45GRB0.css","style"     ]
-0:{"__route":"route:/","__interceptionContext":null,"__layoutIds":["layout:/"],"__rootLayout":"/","__sourcePage":"/page","page:/":"$L1","layout:/":[[[["$","link","css:/_next/static/css/index.BD45GRB0.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/index.BD45GRB0.css","data-rsc-css-href":"/_next/static/css/index.BD45GRB0.css"}],"$undefined"],["$","html",null,{"lang":"zh-CN","children":["$","body",null,{"children":["$","$L2",null,{}]}]}]],null],"route:/":[[["$","meta",null,{"charSet":"utf-8"}],[["$","title","0",{"children":"豆格工坊｜图片转拼豆图纸"}],["$","meta","1",{"name":"description","content":"在浏览器中把图片转换为拼豆像素图纸，按色号、名称或像素格筛选颜色。"}]],[["$","meta","0",{"name":"viewport","content":"width=device-width, initial-scale=1"}]]],["$","$L3",null,{"fallback":"$4","children":["$","$L5",null,{"fallback":"$4","children":["$","$L6",null,{"providerId":"layout:/","segmentMap":{"children":[]},"children":["$","$L7",null,{"id":"layout:/","parallelSlots":"$undefined","children":["$","$L8",null,{"children":["$","$L9",null,{"children":[["$","$L6",null,{"providerId":"page:/","segmentMap":{"children":["__PAGE__"]},"children":["$","$L7",null,{"id":"page:/"}]}],null]}]}]}]}]}]}],null,null],"__layoutFlags":{"layout:/":"s"},"__artifactCompatibility":{"schemaVersion":1,"graphVersion":"app-route-graph:1177fd80f83fa7b0","deploymentVersion":"976d8e63-a1e8-4c46-b57a-876eef7ec109","appElementsSchemaVersion":1,"rscPayloadSchemaVersion":1,"rootBoundaryId":"/","renderEpoch":null},"__renderObservation":{"schemaVersion":1,"output":{"kind":"app-rsc","mountedSlotsFingerprint":null,"renderEpoch":null,"rootBoundaryId":"/","routeId":"route:/"},"completeness":"partial","boundaryOutcome":{"kind":"unknown"},"requestApis":[{"kind":"connection","status":"unknown"},{"kind":"cookies","status":"unknown"},{"kind":"draftMode","status":"unknown"},{"kind":"headers","status":"unknown"},{"kind":"params","status":"unknown"},{"kind":"searchParams","status":"unknown"}],"dynamicFetches":[],"cacheTags":["/","_N_T_/","_N_T_/index","_N_T_/layout","_N_T_/page"],"pathTags":["/"],"cacheability":"unknown","downgrade":{"target":"freshRender","reasons":[{"code":"CP_DOWNGRADE_CACHEABILITY_UNKNOWN","target":"freshRender"},{"code":"CP_DOWNGRADE_INCOMPLETE_OBSERVATION","completeness":"partial","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"connection","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"cookies","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"draftMode","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"headers","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"params","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"searchParams","target":"freshRender"}],"fallback":{"kind":"breakerFallback","code":"CP_PRIVATE_DYNAMIC_DOWNGRADE","mode":"renderFresh","scope":"affectedOutput","fields":{"reasonCodes":["CP_DOWNGRADE_CACHEABILITY_UNKNOWN","CP_DOWNGRADE_INCOMPLETE_OBSERVATION","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API"],"target":"freshRender"}},"isPublicCacheCandidate":false}}}
+:HL["/_next/static/css/index.B4qFKCfT.css","style"     ]
+0:{"__route":"route:/","__interceptionContext":null,"__layoutIds":["layout:/"],"__rootLayout":"/","__sourcePage":"/page","page:/":"$L1","layout:/":[[[["$","link","css:/_next/static/css/index.B4qFKCfT.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/index.B4qFKCfT.css","data-rsc-css-href":"/_next/static/css/index.B4qFKCfT.css"}],"$undefined"],["$","html",null,{"lang":"zh-CN","children":["$","body",null,{"children":["$","$L2",null,{}]}]}]],null],"route:/":[[["$","meta",null,{"charSet":"utf-8"}],[["$","title","0",{"children":"豆格工坊｜图片转拼豆图纸"}],["$","meta","1",{"name":"description","content":"在浏览器中把图片转换为拼豆像素图纸，按色号、名称或像素格筛选颜色。"}]],[["$","meta","0",{"name":"viewport","content":"width=device-width, initial-scale=1"}]]],["$","$L3",null,{"fallback":"$4","children":["$","$L5",null,{"fallback":"$4","children":["$","$L6",null,{"providerId":"layout:/","segmentMap":{"children":[]},"children":["$","$L7",null,{"id":"layout:/","parallelSlots":"$undefined","children":["$","$L8",null,{"children":["$","$L9",null,{"children":[["$","$L6",null,{"providerId":"page:/","segmentMap":{"children":["__PAGE__"]},"children":["$","$L7",null,{"id":"page:/"}]}],null]}]}]}]}]}]}],null,null],"__layoutFlags":{"layout:/":"s"},"__artifactCompatibility":{"schemaVersion":1,"graphVersion":"app-route-graph:1177fd80f83fa7b0","deploymentVersion":"feb6bb1f-6465-425f-8535-1fdc32d89efe","appElementsSchemaVersion":1,"rscPayloadSchemaVersion":1,"rootBoundaryId":"/","renderEpoch":null},"__renderObservation":{"schemaVersion":1,"output":{"kind":"app-rsc","mountedSlotsFingerprint":null,"renderEpoch":null,"rootBoundaryId":"/","routeId":"route:/"},"completeness":"partial","boundaryOutcome":{"kind":"unknown"},"requestApis":[{"kind":"connection","status":"unknown"},{"kind":"cookies","status":"unknown"},{"kind":"draftMode","status":"unknown"},{"kind":"headers","status":"unknown"},{"kind":"params","status":"unknown"},{"kind":"searchParams","status":"unknown"}],"dynamicFetches":[],"cacheTags":["/","_N_T_/","_N_T_/index","_N_T_/layout","_N_T_/page"],"pathTags":["/"],"cacheability":"unknown","downgrade":{"target":"freshRender","reasons":[{"code":"CP_DOWNGRADE_CACHEABILITY_UNKNOWN","target":"freshRender"},{"code":"CP_DOWNGRADE_INCOMPLETE_OBSERVATION","completeness":"partial","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"connection","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"cookies","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"draftMode","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"headers","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"params","target":"freshRender"},{"code":"CP_DOWNGRADE_UNKNOWN_REQUEST_API","requestApi":"searchParams","target":"freshRender"}],"fallback":{"kind":"breakerFallback","code":"CP_PRIVATE_DYNAMIC_DOWNGRADE","mode":"renderFresh","scope":"affectedOutput","fields":{"reasonCodes":["CP_DOWNGRADE_CACHEABILITY_UNKNOWN","CP_DOWNGRADE_INCOMPLETE_OBSERVATION","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API","CP_DOWNGRADE_UNKNOWN_REQUEST_API"],"target":"freshRender"}},"isPublicCacheCandidate":false}}}
 a:I["6efdf509a785",[],"default",1]
 1:["$","$La",null,{"params":"$@b","searchParams":"$@c"}]
 b:{}

out/vinext-client-entry-manifest.json

@@ -1,3 +1,3 @@
 {
-  "appBrowserEntry": "_next/static/chunks/index-DAoL2pdt.js"
+  "appBrowserEntry": "_next/static/chunks/index-VFVBI02U.js"
 }

tests/rendered-html.test.mjs

@@ -1,91 +1,51 @@
 import assert from "node:assert/strict";
-import { access, readFile, readdir } from "node:fs/promises";
+import { readFile } from "node:fs/promises";
 import test from "node:test";
 
-const developmentPreviewMeta =
-  /<meta(?=[^>]*\bname=["']codex-preview["'])(?=[^>]*\bcontent=["']development["'])[^>]*>/i;
-const templateRoot = new URL("../", import.meta.url);
-const previewRoot = new URL("../app/_sites-preview/", import.meta.url);
-
 async function render() {
   const workerUrl = new URL("../dist/server/index.js", import.meta.url);
   workerUrl.searchParams.set("test", `${process.pid}-${Date.now()}`);
   const { default: worker } = await import(workerUrl.href);
 
   return worker.fetch(
-    new Request("http://localhost/", {
-      headers: { accept: "text/html" },
-    }),
-    {
-      ASSETS: {
-        fetch: async () => new Response("Not found", { status: 404 }),
-      },
-    },
-    {
-      waitUntil() {},
-      passThroughOnException() {},
-    },
+    new Request("http://localhost/", { headers: { accept: "text/html" } }),
+    { ASSETS: { fetch: async () => new Response("Not found", { status: 404 }) } },
+    { waitUntil() {}, passThroughOnException() {} },
   );
 }
 
-test("server-renders the starter loading skeleton", async () => {
+test("server-renders the pixel bead application shell", async () => {
   const response = await render();
   assert.equal(response.status, 200);
   assert.match(response.headers.get("content-type") ?? "", /^text\/html\b/i);
 
   const html = await response.text();
-  assert.match(html, developmentPreviewMeta);
-  assert.match(html, /<title>Your site is taking shape<\/title>/i);
-  assert.match(html, /Building your site/);
-  assert.match(html, /Your site is taking shape/);
-  assert.match(
-    html,
-    /Your first version will appear here automatically when it’s ready\./,
-  );
-  assert.doesNotMatch(html, /Codex/);
-  assert.match(html, /react-loading-skeleton/);
-  assert.match(html, /role="status"/);
+  assert.match(html, /<title>豆格工坊｜图片转拼豆图纸<\/title>/i);
+  assert.doesNotMatch(html, /导入现成图纸/);
+  assert.match(html, /MARD 221 基础色卡/);
+  assert.match(html, /图片只在当前浏览器中处理/);
+  assert.doesNotMatch(html, /codex-preview|Your site is taking shape/i);
 });
 
-test("keeps the loading skeleton scoped and disposable", async () => {
-  const [preview, css, page, layout, packageJson, files] = await Promise.all([
-    readFile(new URL("SkeletonPreview.tsx", previewRoot), "utf8"),
-    readFile(new URL("preview.css", previewRoot), "utf8"),
+test("keeps MARD pattern import wired to the crop and recognition flow", async () => {
+  const [page, css, palette] = await Promise.all([
     readFile(new URL("../app/page.tsx", import.meta.url), "utf8"),
-    readFile(new URL("../app/layout.tsx", import.meta.url), "utf8"),
-    readFile(new URL("../package.json", import.meta.url), "utf8"),
-    readdir(previewRoot),
+    readFile(new URL("../app/globals.css", import.meta.url), "utf8"),
+    readFile(new URL("../app/mard-palette.ts", import.meta.url), "utf8"),
   ]);
 
-  assert.deepEqual(files.sort(), ["SkeletonPreview.tsx", "preview.css"]);
-  assert.match(preview, /from "react-loading-skeleton"/);
-  assert.match(preview, /baseColor="#eceae7"/);
-  assert.match(preview, /highlightColor="#f9f8f6"/);
-  assert.match(preview, /duration=\{2\.8\}/);
-  assert.match(preview, /sites-skeleton-search-placeholder/);
-  assert.match(packageJson, /"react-loading-skeleton": "3\.5\.0"/);
-
-  const shellIndex = preview.indexOf('className="sites-skeleton-shell"');
-  const statusIndex = preview.indexOf('className="sites-skeleton-status"');
-  assert.ok(shellIndex >= 0 && statusIndex > shellIndex);
-  assert.match(css, /position:\s*fixed/);
-  assert.match(css, /inset:\s*0/);
-  assert.match(css, /opacity:\s*0\.52/);
-  assert.match(css, /prefers-reduced-motion:\s*reduce/);
-  assert.doesNotMatch(css, /#020617|canvas|pets|progress/i);
-  assert.doesNotMatch(
-    preview,
-    /loading-spinner|status-mark|status-progress|canvas|cookie|random/i,
-  );
-
-  assert.match(page, /export const metadata:\s*Metadata/);
-  assert.match(page, /"codex-preview": "development"/);
-  assert.match(page, /<SkeletonPreview \/>/);
-  assert.match(layout, /title:\s*"Starter Project"/);
-  assert.doesNotMatch(layout, /codex-preview|_sites-preview|themeColor|\bViewport\b/);
-  assert.doesNotMatch(css, /(^|\s)(html|body)\s*\{/m);
-
-  await assert.rejects(
-    access(new URL("public/_sites-preview", templateRoot)),
-  );
+  assert.match(page, /function importMardPatternImage\(/);
+  assert.match(page, /const ENABLE_PATTERN_IMPORT = false/);
+  assert.match(page, /recognizedCodes/);
+  assert.match(page, /missingCodeAsEmpty/);
+  assert.match(page, /没有识别到 MARD 编码的格子视为空白/);
+  assert.match(page, /pattern-import-grid-overlay/);
+  assert.match(page, /max="256"/);
+  assert.match(page, /maximumExportSide = 8192/);
+  assert.match(page, /color\.code.*color\.count.*颗/);
+  assert.match(page, /下载高清 PNG/);
+  assert.match(css, /\.pattern-import-grid-overlay/);
+  assert.match(css, /@media \(max-width: 760px\)/);
+  assert.match(palette, /export const MARD_221/);
+  assert.match(palette, /A:\s*"#[0-9A-F]{6}/);
 });