feat: ComfyUI 改走 10.60.74.221，测试页上传图超阈值自动降采样

将 worker 默认 ComfyUI 地址改为远端 10.60.74.221:8188；前端测试页在像素超过 1536000 时等比缩小到 786432 以内。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-17 02:23:35 +08:00
parent c1bb9614c7
commit 659c037270
17 changed files with 104 additions and 23 deletions
@@ -0,0 +1,55 @@
+// 上传图片自动降采样：当总像素 > MAX_PIXELS 时，等比例缩小到 <= TARGET_PIXELS。
+// 用法：在提交前 file = await window.downscaleImageFile(file);
+(function () {
+  var MAX_PIXELS = 1536000;    // 触发阈值：超过则缩小
+  var TARGET_PIXELS = 786432;  // 缩小后总像素上限
+
+  function loadImage(url) {
+    return new Promise(function (resolve, reject) {
+      var img = new Image();
+      img.onload = function () { resolve(img); };
+      img.onerror = reject;
+      img.src = url;
+    });
+  }
+
+  async function downscaleImageFile(file) {
+    // 非图片、GIF、SVG 不处理，原样返回
+    if (!file || !file.type || file.type.indexOf('image/') !== 0) return file;
+    if (file.type === 'image/gif' || file.type === 'image/svg+xml') return file;
+
+    var url = URL.createObjectURL(file);
+    try {
+      var img = await loadImage(url);
+      var w = img.naturalWidth, h = img.naturalHeight;
+      var total = w * h;
+      if (!total || total <= MAX_PIXELS) return file;  // 未超阈值，原图直接用
+
+      var scale = Math.sqrt(TARGET_PIXELS / total);
+      var nw = Math.max(1, Math.round(w * scale));
+      var nh = Math.max(1, Math.round(h * scale));
+
+      var canvas = document.createElement('canvas');
+      canvas.width = nw;
+      canvas.height = nh;
+      var ctx = canvas.getContext('2d');
+      ctx.drawImage(img, 0, 0, nw, nh);
+
+      var outType = file.type === 'image/png' ? 'image/png' : 'image/jpeg';
+      var quality = outType === 'image/jpeg' ? 0.92 : undefined;
+      var blob = await new Promise(function (res) { canvas.toBlob(res, outType, quality); });
+      if (!blob) return file;
+
+      var base = (file.name || 'image').replace(/\.(jpe?g|png|webp|bmp)$/i, '');
+      var name = base + (outType === 'image/png' ? '.png' : '.jpg');
+      return new File([blob], name, { type: outType, lastModified: Date.now() });
+    } catch (e) {
+      console.warn('downscaleImageFile 失败，使用原图', e);
+      return file;
+    } finally {
+      URL.revokeObjectURL(url);
+    }
+  }
+
+  window.downscaleImageFile = downscaleImageFile;
+})();