fabric/dist/src/parser/parseTransformAttribute.mjs.map

Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.

{"version":3,"file":"parseTransformAttribute.mjs","sources":["../../../src/parser/parseTransformAttribute.ts"],"sourcesContent":["import { ROTATE, SCALE, SKEW_X, SKEW_Y, iMatrix } from '../constants';\nimport { reNum } from './constants';\nimport type { TMat2D } from '../typedefs';\nimport { cleanupSvgAttribute } from '../util/internals/cleanupSvgAttribute';\nimport {\n  createRotateMatrix,\n  createScaleMatrix,\n  createSkewXMatrix,\n  createSkewYMatrix,\n  createTranslateMatrix,\n  multiplyTransformMatrixArray,\n} from '../util/misc/matrix';\n\n// == begin transform regexp\nconst p = `(${reNum})`;\nconst skewX = String.raw`(skewX)\\(${p}\\)`;\nconst skewY = String.raw`(skewY)\\(${p}\\)`;\nconst rotate = String.raw`(rotate)\\(${p}(?: ${p} ${p})?\\)`;\nconst scale = String.raw`(scale)\\(${p}(?: ${p})?\\)`;\nconst translate = String.raw`(translate)\\(${p}(?: ${p})?\\)`;\nconst matrix = String.raw`(matrix)\\(${p} ${p} ${p} ${p} ${p} ${p}\\)`;\nconst transform = `(?:${matrix}|${translate}|${rotate}|${scale}|${skewX}|${skewY})`;\nconst transforms = `(?:${transform}*)`;\nconst transformList = String.raw`^\\s*(?:${transforms}?)\\s*$`;\n// http://www.w3.org/TR/SVG/coords.html#TransformAttribute\nconst reTransformList = new RegExp(transformList);\nconst reTransform = new RegExp(transform);\nconst reTransformAll = new RegExp(transform, 'g');\n// == end transform regexp\n\n/**\n * Parses \"transform\" attribute, returning an array of values\n * @param {String} attributeValue String containing attribute value\n * @return {TTransformMatrix} Array of 6 elements representing transformation matrix\n */\nexport function parseTransformAttribute(attributeValue: string): TMat2D {\n  // first we clean the string\n  attributeValue = cleanupSvgAttribute(attributeValue)\n    // remove spaces around front parentheses\n    .replace(/\\s*([()])\\s*/gi, '$1');\n\n  // start with identity matrix\n  const matrices: TMat2D[] = [];\n\n  // return if no argument was given or\n  // an argument does not match transform attribute regexp\n  if (\n    !attributeValue ||\n    (attributeValue && !reTransformList.test(attributeValue))\n  ) {\n    return [...iMatrix];\n  }\n\n  for (const match of attributeValue.matchAll(reTransformAll)) {\n    const transformMatch = reTransform.exec(match[0]);\n    if (!transformMatch) {\n      continue;\n    }\n    let matrix: TMat2D = iMatrix;\n    const matchedParams = transformMatch.filter((m) => !!m);\n    const [, operation, ...rawArgs] = matchedParams;\n    const [arg0, arg1, arg2, arg3, arg4, arg5] = rawArgs.map((arg) =>\n      parseFloat(arg),\n    );\n\n    switch (operation) {\n      case 'translate':\n        matrix = createTranslateMatrix(arg0, arg1);\n        break;\n      case ROTATE:\n        matrix = createRotateMatrix({ angle: arg0 }, { x: arg1, y: arg2 });\n        break;\n      case SCALE:\n        matrix = createScaleMatrix(arg0, arg1);\n        break;\n      case SKEW_X:\n        matrix = createSkewXMatrix(arg0);\n        break;\n      case SKEW_Y:\n        matrix = createSkewYMatrix(arg0);\n        break;\n      case 'matrix':\n        matrix = [arg0, arg1, arg2, arg3, arg4, arg5];\n        break;\n    }\n\n    // snapshot current matrix into matrices array\n    matrices.push(matrix);\n  }\n\n  return 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