@cs-open/react-fabric/dist/esm/utils/business.mjs.map

React Fabric

{"version":3,"file":"business.mjs","sources":["../../../src/utils/business.ts"],"sourcesContent":["import type { Canvas, FabricObject } from 'fabric'\nimport { Path, util } from 'fabric'\n\n/**\n * 将points转换为rect\n * @param points 支持字符串（以逗号分隔的8个数字）或数字数组\n * @returns 返回矩形属性或null\n */\nexport const getRectProps = (points: string | number[] | undefined, strokeWidth = 1) => {\n    if (!points) {\n        console.warn('getRectProps: points is required')\n        return null\n    }\n\n    const coordinates = Array.isArray(points) ? points : points.split(',').map(Number)\n\n    if (coordinates.length === 0) {\n        console.warn('getRectProps: points array is empty')\n        return null\n    }\n\n    if (coordinates.length !== 8) {\n        console.warn(`getRectProps: points must contain exactly 8 numbers, got ${coordinates.length}`)\n        return null\n    }\n\n    if (coordinates.some(n => Number.isNaN(n))) {\n        console.warn('getRectProps: all points must be valid numbers')\n        return null\n    }\n\n    // 按顺时针顺序：左上(x1,y1)、右上(x2,y2)、右下(x3,y3)、左下(x4,y4)\n\n    const [x1, y1, x2, _y2, _x3, y3, _x4, _y4] = coordinates\n    const result = {\n        left: Number(x1),\n        top: Number(y1),\n        width: Math.abs(Number(x2) - Number(x1)) - strokeWidth,\n        height: Math.abs(Number(y3) - Number(y1)) - strokeWidth,\n        strokeWidth,\n    }\n\n    return result\n}\n// 将object转换成points\nexport const getObjectPoints = (object: FabricObject) => {\n    if (!object) {\n        console.warn('getObjectPoints: object is required')\n        return null\n    }\n    const { left, top, width, height } = object\n    return [left, top, left + width, top, left + width, top + height, left, top + height]\n}\n\n/**\n * 获取路径的宽高\n * @param pathString\n * @returns\n */\nexport const getPathBounds = (pathString: string) => {\n    const path = new Path(util.parsePath(pathString))\n    return {\n        width: path.width!,\n        height: path.height!,\n    }\n}\n\nconst 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1,\n    },\n    {\n        name: '错误',\n        scale: 0.02,\n        path: 错误Path,\n        ...getPathBounds(错误Path),\n        midScale: 0.03,\n        result: 2,\n    },\n    {\n        name: '问号存疑',\n        scale: 0.02,\n        path: 问号Path,\n        ...getPathBounds(问号Path),\n        midScale: 0.03,\n        result: 3,\n    },\n    {\n        name: '半对',\n        scale: 1,\n        path: 半对Path,\n        ...getPathBounds(半对Path),\n        midScale: 0.3,\n        result: 4,\n    },\n    {\n        name: '占位', // 无痕迹，占位使用\n        scale: 1,\n        path: 'M 0 0',\n        ...getPathBounds('M 0 0'),\n        midScale: 0.3,\n        result: 5,\n    },\n] as const\n\n// 禁用所有对象并获取还原函数\nexport const disableCanvasObjects = (canvas: Canvas) => {\n    // 保存所有对象的原始状态\n    const originalStates = canvas.getObjects().map((obj: any) => ({\n        object: obj,\n        selectable: obj.selectable,\n        evented: obj.evented,\n    }))\n\n    // 禁用所有对象的事件和选择\n    canvas.getObjects().forEach((obj: any) => {\n        obj.selectable = false\n        obj.evented = false\n    })\n\n    // 返回还原函数\n    return () => {\n        originalStates.forEach((state: any) => {\n            state.object.selectable = state.selectable\n            state.object.evented = state.evented\n        })\n    }\n}\n\n/**\n * 计算相对 Text 字体大小\n */\nexport const getRelativeTextFontSize = (naturalWidth: number, width: number, defaultFontSize?: number) => {\n    return Math.round((naturalWidth / width) * (defaultFontSize || 14))\n}\n\n/**\n * 还原痕迹至原图点位\n * @param brush 痕迹对象，canvas toJSON 后的对象\n * @param scale 当前缩放, imgTop,imgLeft 图片基于居中偏移\n * @param expanded_points 基于原图的点位，字符串\n */\nexport const restore2Origin = ({\n    brush,\n    scale = 1,\n    expanded_points,\n    imgTop = 0,\n    imgLeft = 0,\n}: {\n    brush: any\n    scale?: number\n    expanded_points?: string\n    imgTop?: number\n    imgLeft?: number\n}) => {\n    const obj = JSON.parse(JSON.stringify(brush))\n    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