{
  "schemaVersion": 2,
  "sourceKind": "structured-spec",
  "confidence": "high",
  "slug": "signaturepad",
  "name": "签名板 SignaturePad",
  "semanticTypeCandidates": [
    "canvas",
    "signature"
  ],
  "variantDimensions": [
    {
      "name": "state",
      "values": [
        "empty",
        "drawing",
        "signed"
      ]
    },
    {
      "name": "device",
      "values": [
        "mouse",
        "touch"
      ]
    }
  ],
  "representativeVariants": [
    {
      "state": "empty",
      "device": "mouse",
      "label": "空白画布"
    },
    {
      "state": "signed",
      "device": "mouse",
      "label": "已签名"
    },
    {
      "state": "drawing",
      "device": "touch",
      "label": "触屏绘制中"
    }
  ],
  "anatomy": {
    "canvas": "手写签名区域",
    "input": "支持鼠标、触屏",
    "actions": "清除、撤销、保存",
    "export": "可导出图片"
  },
  "structurePatterns": {
    "input": "鼠标 + 触屏",
    "actions": "清除 / 撤销 / 保存"
  },
  "usageHints": [
    "手写签名区域",
    "支持鼠标、触屏",
    "清除、撤销、保存",
    "可导出图片",
    "适用于合同、确认单"
  ],
  "doNotInvent": [
    "签名笔迹的加密与存证"
  ],
  "unknowns": [
    "画布尺寸与线条粗细",
    "导出图片的格式与尺寸"
  ]
}