Initial import from GitHub

2026-07-08 22:48:51 +08:00
commit 2072bc87a0
56 changed files with 8119 additions and 0 deletions
@@ -0,0 +1,108 @@
+import fs from "fs";
+import path from "path";
+import sharp from "sharp";
+
+const srcDir = "C:/Users/User/Downloads";
+const outDir = path.join(process.cwd(), "assets/readme-buttons");
+
+const mapping = [
+  { src: "ChatGPT Image Jun 17, 2026, 04_04_16 PM (1).png", out: "btn-site.png" },
+  { src: "ChatGPT Image Jun 17, 2026, 04_04_16 PM (2).png", out: "btn-mit.png" },
+  { src: "ChatGPT Image Jun 17, 2026, 04_04_17 PM (3).png", out: "btn-agent-skills.png" },
+  { src: "ChatGPT Image Jun 17, 2026, 04_04_17 PM (4).png", out: "btn-tools.png" },
+  { src: "ChatGPT Image Jun 17, 2026, 04_04_20 PM (5).png", out: "btn-changelog.png" },
+];
+
+function isBackground(r, g, b, a, threshold = 28) {
+  if (a < 8) return true;
+  return r <= threshold && g <= threshold && b <= threshold;
+}
+
+function removeOuterBackground(rgba, width, height) {
+  const visited = new Uint8Array(width * height);
+  const queue = [];
+
+  for (let x = 0; x < width; x++) {
+    queue.push(x, 0, x, height - 1);
+  }
+  for (let y = 1; y < height - 1; y++) {
+    queue.push(0, y, width - 1, y);
+  }
+
+  while (queue.length) {
+    const y = queue.pop();
+    const x = queue.pop();
+    const idx = y * width + x;
+    if (x < 0 || y < 0 || x >= width || y >= height || visited[idx]) continue;
+
+    const i = idx * 4;
+    const r = rgba[i];
+    const g = rgba[i + 1];
+    const b = rgba[i + 2];
+    const a = rgba[i + 3];
+    if (!isBackground(r, g, b, a)) continue;
+
+    visited[idx] = 1;
+    rgba[i + 3] = 0;
+
+    queue.push(x + 1, y, x - 1, y, x, y + 1, x, y - 1);
+  }
+
+  return rgba;
+}
+
+function getBounds(rgba, width, height) {
+  let minX = width;
+  let minY = height;
+  let maxX = 0;
+  let maxY = 0;
+
+  for (let y = 0; y < height; y++) {
+    for (let x = 0; x < width; x++) {
+      const a = rgba[(y * width + x) * 4 + 3];
+      if (a > 8) {
+        minX = Math.min(minX, x);
+        minY = Math.min(minY, y);
+        maxX = Math.max(maxX, x);
+        maxY = Math.max(maxY, y);
+      }
+    }
+  }
+
+  const pad = 2;
+  return {
+    left: Math.max(0, minX - pad),
+    top: Math.max(0, minY - pad),
+    width: Math.min(width, maxX - minX + 1 + pad * 2),
+    height: Math.min(height, maxY - minY + 1 + pad * 2),
+  };
+}
+
+async function processOne(srcPath, outPath) {
+  const { data, info } = await sharp(srcPath)
+    .ensureAlpha()
+    .raw()
+    .toBuffer({ resolveWithObject: true });
+
+  const rgba = Buffer.from(data);
+  removeOuterBackground(rgba, info.width, info.height);
+  const bounds = getBounds(rgba, info.width, info.height);
+
+  await sharp(rgba, {
+    raw: { width: info.width, height: info.height, channels: 4 },
+  })
+    .extract(bounds)
+    .png({ compressionLevel: 9, adaptiveFiltering: true })
+    .toFile(outPath);
+
+  const meta = await sharp(outPath).metadata();
+  console.log(
+    `${path.basename(outPath)} -> ${meta.width}x${meta.height}, ${fs.statSync(outPath).size} bytes`
+  );
+}
+
+fs.mkdirSync(outDir, { recursive: true });
+
+for (const { src, out } of mapping) {
+  await processOne(path.join(srcDir, src), path.join(outDir, out));
+}