{"ast":null,"code":"/**\r\n * @author NHN Ent. FE Development Team <dl_javascript@nhn.com>\r\n * @fileoverview Shape resize helper\r\n */\nconst DIVISOR = {\n  rect: 1,\n  circle: 2,\n  triangle: 1\n};\nconst DIMENSION_KEYS = {\n  rect: {\n    w: 'width',\n    h: 'height'\n  },\n  circle: {\n    w: 'rx',\n    h: 'ry'\n  },\n  triangle: {\n    w: 'width',\n    h: 'height'\n  }\n};\n/**\r\n * Set the start point value to the shape object\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\n\nfunction setStartPoint(shape) {\n  const {\n    originX,\n    originY\n  } = shape;\n  const originKey = originX.substring(0, 1) + originY.substring(0, 1);\n  shape.startPoint = shape.origins[originKey];\n}\n/**\r\n * Get the positions of ratated origin by the pointer value\r\n * @param {{x: number, y: number}} origin - Origin value\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {number} angle - Rotating angle\r\n * @returns {Object} Postions of origin\r\n * @ignore\r\n */\n\n\nfunction getPositionsOfRotatedOrigin(origin, pointer, angle) {\n  const sx = origin.x;\n  const sy = origin.y;\n  const px = pointer.x;\n  const py = pointer.y;\n  const r = angle * Math.PI / 180;\n  const rx = (px - sx) * Math.cos(r) - (py - sy) * Math.sin(r) + sx;\n  const ry = (px - sx) * Math.sin(r) + (py - sy) * Math.cos(r) + sy;\n  return {\n    originX: sx > rx ? 'right' : 'left',\n    originY: sy > ry ? 'bottom' : 'top'\n  };\n}\n/**\r\n * Whether the shape has the center origin or not\r\n * @param {fabric.Object} shape - Shape object\r\n * @returns {boolean} State\r\n * @ignore\r\n */\n\n\nfunction hasCenterOrigin(shape) {\n  return shape.originX === 'center' && shape.originY === 'center';\n}\n/**\r\n * Adjust the origin of shape by the start point\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\n\n\nfunction adjustOriginByStartPoint(pointer, shape) {\n  const centerPoint = shape.getPointByOrigin('center', 'center');\n  const angle = -shape.angle;\n  const originPositions = getPositionsOfRotatedOrigin(centerPoint, pointer, angle);\n  const {\n    originX,\n    originY\n  } = originPositions;\n  const origin = shape.getPointByOrigin(originX, originY);\n  const left = shape.left - (centerPoint.x - origin.x);\n  const top = shape.top - (centerPoint.y - origin.y);\n  shape.set({\n    originX,\n    originY,\n    left,\n    top\n  });\n  shape.setCoords();\n}\n/**\r\n * Adjust the origin of shape by the moving pointer value\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\n\n\nfunction adjustOriginByMovingPointer(pointer, shape) {\n  const origin = shape.startPoint;\n  const angle = -shape.angle;\n  const originPositions = getPositionsOfRotatedOrigin(origin, pointer, angle);\n  const {\n    originX,\n    originY\n  } = originPositions;\n  shape.setPositionByOrigin(origin, originX, originY);\n  shape.setCoords();\n}\n/**\r\n * Adjust the dimension of shape on firing scaling event\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\n\n\nfunction adjustDimensionOnScaling(shape) {\n  const {\n    type,\n    scaleX,\n    scaleY\n  } = shape;\n  const dimensionKeys = DIMENSION_KEYS[type];\n  let width = shape[dimensionKeys.w] * scaleX;\n  let height = shape[dimensionKeys.h] * scaleY;\n\n  if (shape.isRegular) {\n    const maxScale = Math.max(scaleX, scaleY);\n    width = shape[dimensionKeys.w] * maxScale;\n    height = shape[dimensionKeys.h] * maxScale;\n  }\n\n  const options = {\n    hasControls: false,\n    hasBorders: false,\n    scaleX: 1,\n    scaleY: 1\n  };\n  options[dimensionKeys.w] = width;\n  options[dimensionKeys.h] = height;\n  shape.set(options);\n}\n/**\r\n * Adjust the dimension of shape on firing mouse move event\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\n\n\nfunction adjustDimensionOnMouseMove(pointer, shape) {\n  const {\n    type,\n    strokeWidth,\n    startPoint: origin\n  } = shape;\n  const divisor = DIVISOR[type];\n  const dimensionKeys = DIMENSION_KEYS[type];\n  const isTriangle = !!(shape.type === 'triangle');\n  const options = {};\n  let width = Math.abs(origin.x - pointer.x) / divisor;\n  let height = Math.abs(origin.y - pointer.y) / divisor;\n\n  if (width > strokeWidth) {\n    width -= strokeWidth / divisor;\n  }\n\n  if (height > strokeWidth) {\n    height -= strokeWidth / divisor;\n  }\n\n  if (shape.isRegular) {\n    width = height = Math.max(width, height);\n\n    if (isTriangle) {\n      height = Math.sqrt(3) / 2 * width;\n    }\n  }\n\n  options[dimensionKeys.w] = width;\n  options[dimensionKeys.h] = height;\n  shape.set(options);\n}\n\nmodule.exports = {\n  /**\r\n   * Set each origin value to shape\r\n   * @param {fabric.Object} shape - Shape object\r\n   */\n  setOrigins(shape) {\n    const leftTopPoint = shape.getPointByOrigin('left', 'top');\n    const rightTopPoint = shape.getPointByOrigin('right', 'top');\n    const rightBottomPoint = shape.getPointByOrigin('right', 'bottom');\n    const leftBottomPoint = shape.getPointByOrigin('left', 'bottom');\n    shape.origins = {\n      lt: leftTopPoint,\n      rt: rightTopPoint,\n      rb: rightBottomPoint,\n      lb: leftBottomPoint\n    };\n  },\n\n  /**\r\n   * Resize the shape\r\n   * @param {fabric.Object} shape - Shape object\r\n   * @param {{x: number, y: number}} pointer - Mouse pointer values on canvas\r\n   * @param {boolean} isScaling - Whether the resizing action is scaling or not\r\n   */\n  resize(shape, pointer, isScaling) {\n    if (hasCenterOrigin(shape)) {\n      adjustOriginByStartPoint(pointer, shape);\n      setStartPoint(shape);\n    }\n\n    if (isScaling) {\n      adjustDimensionOnScaling(shape, pointer);\n    } else {\n      adjustDimensionOnMouseMove(pointer, shape);\n    }\n\n    adjustOriginByMovingPointer(pointer, shape);\n  },\n\n  /**\r\n   * Adjust the origin position of shape to center\r\n   * @param {fabric.Object} shape - Shape object\r\n   */\n  adjustOriginToCenter(shape) {\n    const centerPoint = shape.getPointByOrigin('center', 'center');\n    const {\n      originX,\n      originY\n    } = shape;\n    const origin = shape.getPointByOrigin(originX, originY);\n    const left = shape.left + (centerPoint.x - origin.x);\n    const top = shape.top + (centerPoint.y - origin.y);\n    shape.set({\n      hasControls: true,\n      hasBorders: true,\n      originX: 'center',\n      originY: 'center',\n      left,\n      top\n    });\n    shape.setCoords(); // For left, top properties\n  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FE Development Team <dl_javascript@nhn.com>\r\n * @fileoverview Shape resize helper\r\n */\r\nconst DIVISOR = {\r\n  rect: 1,\r\n  circle: 2,\r\n  triangle: 1,\r\n};\r\nconst DIMENSION_KEYS = {\r\n  rect: {\r\n    w: 'width',\r\n    h: 'height',\r\n  },\r\n  circle: {\r\n    w: 'rx',\r\n    h: 'ry',\r\n  },\r\n  triangle: {\r\n    w: 'width',\r\n    h: 'height',\r\n  },\r\n};\r\n\r\n/**\r\n * Set the start point value to the shape object\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\r\nfunction setStartPoint(shape) {\r\n  const { originX, originY } = shape;\r\n  const originKey = originX.substring(0, 1) + originY.substring(0, 1);\r\n\r\n  shape.startPoint = shape.origins[originKey];\r\n}\r\n\r\n/**\r\n * Get the positions of ratated origin by the pointer value\r\n * @param {{x: number, y: number}} origin - Origin value\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {number} angle - Rotating angle\r\n * @returns {Object} Postions of origin\r\n * @ignore\r\n */\r\nfunction getPositionsOfRotatedOrigin(origin, pointer, angle) {\r\n  const sx = origin.x;\r\n  const sy = origin.y;\r\n  const px = pointer.x;\r\n  const py = pointer.y;\r\n  const r = (angle * Math.PI) / 180;\r\n  const rx = (px - sx) * Math.cos(r) - (py - sy) * Math.sin(r) + sx;\r\n  const ry = (px - sx) * Math.sin(r) + (py - sy) * Math.cos(r) + sy;\r\n\r\n  return {\r\n    originX: sx > rx ? 'right' : 'left',\r\n    originY: sy > ry ? 'bottom' : 'top',\r\n  };\r\n}\r\n\r\n/**\r\n * Whether the shape has the center origin or not\r\n * @param {fabric.Object} shape - Shape object\r\n * @returns {boolean} State\r\n * @ignore\r\n */\r\nfunction hasCenterOrigin(shape) {\r\n  return shape.originX === 'center' && shape.originY === 'center';\r\n}\r\n\r\n/**\r\n * Adjust the origin of shape by the start point\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\r\nfunction adjustOriginByStartPoint(pointer, shape) {\r\n  const centerPoint = shape.getPointByOrigin('center', 'center');\r\n  const angle = -shape.angle;\r\n  const originPositions = getPositionsOfRotatedOrigin(centerPoint, pointer, angle);\r\n  const { originX, originY } = originPositions;\r\n  const origin = shape.getPointByOrigin(originX, originY);\r\n  const left = shape.left - (centerPoint.x - origin.x);\r\n  const top = shape.top - (centerPoint.y - origin.y);\r\n\r\n  shape.set({\r\n    originX,\r\n    originY,\r\n    left,\r\n    top,\r\n  });\r\n\r\n  shape.setCoords();\r\n}\r\n\r\n/**\r\n * Adjust the origin of shape by the moving pointer value\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\r\nfunction adjustOriginByMovingPointer(pointer, shape) {\r\n  const origin = shape.startPoint;\r\n  const angle = -shape.angle;\r\n  const originPositions = getPositionsOfRotatedOrigin(origin, pointer, angle);\r\n  const { originX, originY } = originPositions;\r\n\r\n  shape.setPositionByOrigin(origin, originX, originY);\r\n  shape.setCoords();\r\n}\r\n\r\n/**\r\n * Adjust the dimension of shape on firing scaling event\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\r\nfunction adjustDimensionOnScaling(shape) {\r\n  const { type, scaleX, scaleY } = shape;\r\n  const dimensionKeys = DIMENSION_KEYS[type];\r\n  let width = shape[dimensionKeys.w] * scaleX;\r\n  let height = shape[dimensionKeys.h] * scaleY;\r\n\r\n  if (shape.isRegular) {\r\n    const maxScale = Math.max(scaleX, scaleY);\r\n\r\n    width = shape[dimensionKeys.w] * maxScale;\r\n    height = shape[dimensionKeys.h] * maxScale;\r\n  }\r\n\r\n  const options = {\r\n    hasControls: false,\r\n    hasBorders: false,\r\n    scaleX: 1,\r\n    scaleY: 1,\r\n  };\r\n\r\n  options[dimensionKeys.w] = width;\r\n  options[dimensionKeys.h] = height;\r\n\r\n  shape.set(options);\r\n}\r\n\r\n/**\r\n * Adjust the dimension of shape on firing mouse move event\r\n * @param {{x: number, y: number}} pointer - Pointer value\r\n * @param {fabric.Object} shape - Shape object\r\n * @ignore\r\n */\r\nfunction adjustDimensionOnMouseMove(pointer, shape) {\r\n  const { type, strokeWidth, startPoint: origin } = shape;\r\n  const divisor = DIVISOR[type];\r\n  const dimensionKeys = DIMENSION_KEYS[type];\r\n  const isTriangle = !!(shape.type === 'triangle');\r\n  const options = {};\r\n  let width = Math.abs(origin.x - pointer.x) / divisor;\r\n  let height = Math.abs(origin.y - pointer.y) / divisor;\r\n\r\n  if (width > strokeWidth) {\r\n    width -= strokeWidth / divisor;\r\n  }\r\n\r\n  if (height > strokeWidth) {\r\n    height -= strokeWidth / divisor;\r\n  }\r\n\r\n  if (shape.isRegular) {\r\n    width = height = Math.max(width, height);\r\n\r\n    if (isTriangle) {\r\n      height = (Math.sqrt(3) / 2) * width;\r\n    }\r\n  }\r\n\r\n  options[dimensionKeys.w] = width;\r\n  options[dimensionKeys.h] = height;\r\n\r\n  shape.set(options);\r\n}\r\n\r\nmodule.exports = {\r\n  /**\r\n   * Set each origin value to shape\r\n   * @param {fabric.Object} shape - Shape object\r\n   */\r\n  setOrigins(shape) {\r\n    const leftTopPoint = shape.getPointByOrigin('left', 'top');\r\n    const rightTopPoint = shape.getPointByOrigin('right', 'top');\r\n    const rightBottomPoint = shape.getPointByOrigin('right', 'bottom');\r\n    const leftBottomPoint = shape.getPointByOrigin('left', 'bottom');\r\n\r\n    shape.origins = {\r\n      lt: leftTopPoint,\r\n      rt: rightTopPoint,\r\n      rb: rightBottomPoint,\r\n      lb: leftBottomPoint,\r\n    };\r\n  },\r\n\r\n  /**\r\n   * Resize the shape\r\n   * @param {fabric.Object} shape - Shape object\r\n   * @param {{x: number, y: number}} pointer - Mouse pointer values on canvas\r\n   * @param {boolean} isScaling - Whether the resizing action is scaling or not\r\n   */\r\n  resize(shape, pointer, isScaling) {\r\n    if (hasCenterOrigin(shape)) {\r\n      adjustOriginByStartPoint(pointer, shape);\r\n      setStartPoint(shape);\r\n    }\r\n\r\n    if (isScaling) {\r\n      adjustDimensionOnScaling(shape, pointer);\r\n    } else {\r\n      adjustDimensionOnMouseMove(pointer, shape);\r\n    }\r\n\r\n    adjustOriginByMovingPointer(pointer, shape);\r\n  },\r\n\r\n  /**\r\n   * Adjust the origin position of shape to center\r\n   * @param {fabric.Object} shape - Shape object\r\n   */\r\n  adjustOriginToCenter(shape) {\r\n    const centerPoint = shape.getPointByOrigin('center', 'center');\r\n    const { originX, originY } = shape;\r\n    const origin = shape.getPointByOrigin(originX, originY);\r\n    const left = shape.left + (centerPoint.x - origin.x);\r\n    const top = shape.top + (centerPoint.y - origin.y);\r\n\r\n    shape.set({\r\n      hasControls: true,\r\n      hasBorders: true,\r\n      originX: 'center',\r\n      originY: 'center',\r\n      left,\r\n      top,\r\n    });\r\n\r\n    shape.setCoords(); // For left, top properties\r\n  },\r\n};\r\n"]},"metadata":{},"sourceType":"module"}