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kepler.gl

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kepler.gl is a webgl based application to visualize large scale location data in the browser

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"use strict"; var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault"); Object.defineProperty(exports, "__esModule", { value: true }); exports.getScaleFromImageSize = getScaleFromImageSize; exports.calculateExportImageSize = calculateExportImageSize; exports.convertToPng = convertToPng; exports.dataURItoBlob = dataURItoBlob; exports.downloadFile = downloadFile; exports.exportImage = exportImage; exports.exportToJsonString = exportToJsonString; exports.getMapJSON = getMapJSON; exports.exportJson = exportJson; exports.exportHtml = exportHtml; exports.exportData = exportData; exports.exportMap = exportMap; exports["default"] = exports.DEFAULT_EXPORT_JSON_SETTINGS = exports.DEFAULT_DATA_NAME = exports.DEFAULT_JSON_NAME = exports.DEFAULT_HTML_NAME = exports.DEFAULT_IMAGE_NAME = void 0; var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty")); var _domToImage = _interopRequireDefault(require("./dom-to-image")); var _window = require("global/window"); var _defaultSettings = require("../constants/default-settings"); var _exportMapHtml = require("../templates/export-map-html"); var _dataProcessor = require("../processors/data-processor"); var _lodash = _interopRequireDefault(require("lodash.get")); var _utils = require("./utils"); var _schemas = _interopRequireDefault(require("../schemas")); function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; } function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { (0, _defineProperty2["default"])(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; } /** * Default file names */ var DEFAULT_IMAGE_NAME = 'kepler-gl.png'; exports.DEFAULT_IMAGE_NAME = DEFAULT_IMAGE_NAME; var DEFAULT_HTML_NAME = 'kepler.gl.html'; exports.DEFAULT_HTML_NAME = DEFAULT_HTML_NAME; var DEFAULT_JSON_NAME = 'keplergl.json'; exports.DEFAULT_JSON_NAME = DEFAULT_JSON_NAME; var DEFAULT_DATA_NAME = 'kepler-gl'; /** * Default json export settings * @type {{hasData: boolean}} */ exports.DEFAULT_DATA_NAME = DEFAULT_DATA_NAME; var DEFAULT_EXPORT_JSON_SETTINGS = { hasData: true }; exports.DEFAULT_EXPORT_JSON_SETTINGS = DEFAULT_EXPORT_JSON_SETTINGS; var defaultResolution = _defaultSettings.EXPORT_IMG_RESOLUTION_OPTIONS.find(function (op) { return op.id === _defaultSettings.RESOLUTIONS.ONE_X; }); var defaultRatio = _defaultSettings.EXPORT_IMG_RATIO_OPTIONS.find(function (op) { return op.id === _defaultSettings.EXPORT_IMG_RATIOS.FOUR_BY_THREE; }); function getScaleFromImageSize(imageW, imageH, mapW, mapH) { if ([imageW, imageH, mapW, mapH].some(function (d) { return d <= 0; })) { return 1; } var base = imageW / imageH > 1 ? imageW : imageH; var mapBase = imageW / imageH > 1 ? mapW : mapH; var scale = base / mapBase; return scale; } function calculateExportImageSize(_ref) { var mapW = _ref.mapW, mapH = _ref.mapH, ratio = _ref.ratio, resolution = _ref.resolution; if (mapW <= 0 || mapH <= 0) { return null; } var ratioItem = _defaultSettings.EXPORT_IMG_RATIO_OPTIONS.find(function (op) { return op.id === ratio; }) || defaultRatio; var resolutionItem = _defaultSettings.EXPORT_IMG_RESOLUTION_OPTIONS.find(function (op) { return op.id === resolution; }) || defaultResolution; var _resolutionItem$getSi = resolutionItem.getSize(mapW, mapH), scaledWidth = _resolutionItem$getSi.width, scaledHeight = _resolutionItem$getSi.height; var _ratioItem$getSize = ratioItem.getSize(scaledWidth, scaledHeight), imageW = _ratioItem$getSize.width, imageH = _ratioItem$getSize.height; var _ref2 = ratioItem.id === _defaultSettings.EXPORT_IMG_RATIOS.CUSTOM ? {} : resolutionItem, scale = _ref2.scale; return { scale: scale, imageW: imageW, imageH: imageH }; } function convertToPng(sourceElem, options) { return _domToImage["default"].toPng(sourceElem, options); } function dataURItoBlob(dataURI) { var binary = (0, _window.atob)(dataURI.split(',')[1]); // separate out the mime component var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]; // write the bytes of the string to an ArrayBuffer var ab = new _window.ArrayBuffer(binary.length); // create a view into the buffer var ia = new _window.Uint8Array(ab); for (var i = 0; i < binary.length; i++) { ia[i] = binary.charCodeAt(i); } return new _window.Blob([ab], { type: mimeString }); } function downloadFile(fileBlob, filename) { var url = _window.URL.createObjectURL(fileBlob); var link = _window.document.createElement('a'); link.setAttribute('href', url); link.setAttribute('download', filename); _window.document.body.appendChild(link); link.click(); _window.document.body.removeChild(link); _window.URL.revokeObjectURL(url); } function exportImage(state) { var imageDataUri = state.uiState.exportImage.imageDataUri; if (imageDataUri) { var file = dataURItoBlob(imageDataUri); downloadFile(file, DEFAULT_IMAGE_NAME); } } function exportToJsonString(data) { try { return JSON.stringify(data); } catch (e) { return e.description; } } function getMapJSON(state) { var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_EXPORT_JSON_SETTINGS; var hasData = options.hasData; if (!hasData) { return _schemas["default"].getConfigToSave(state); } var mapToSave = _schemas["default"].save(state); // add file name if title is not provided var title = (0, _lodash["default"])(mapToSave, ['info', 'title']); if (!title || !title.length) { mapToSave = (0, _utils.set)(['info', 'title'], "keplergl_".concat((0, _utils.generateHashId)(6)), mapToSave); } return mapToSave; } function exportJson(state) { var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; var map = getMapJSON(state, options); var fileBlob = new _window.Blob([exportToJsonString(map)], { type: 'application/json' }); downloadFile(fileBlob, DEFAULT_JSON_NAME); } function exportHtml(state, options) { var userMapboxToken = options.userMapboxToken, exportMapboxAccessToken = options.exportMapboxAccessToken, mode = options.mode; var data = _objectSpread({}, getMapJSON(state), { mapboxApiAccessToken: (userMapboxToken || '') !== '' ? userMapboxToken : exportMapboxAccessToken, mode: mode }); var fileBlob = new _window.Blob([(0, _exportMapHtml.exportMapToHTML)(data)], { type: 'text/html' }); downloadFile(fileBlob, DEFAULT_HTML_NAME); } function exportData(state, option) { var visState = state.visState; var datasets = visState.datasets; var selectedDataset = option.selectedDataset, dataType = option.dataType, filtered = option.filtered; // get the selected data var filename = DEFAULT_DATA_NAME; var selectedDatasets = datasets[selectedDataset] ? 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Copyright (c) 2020 Uber Technologies, Inc.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n// all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n// THE SOFTWARE.\n\nimport domtoimage from 'utils/dom-to-image';\nimport {Blob, URL, atob, Uint8Array, ArrayBuffer, document} from 'global/window';\nimport {\n  EXPORT_IMG_RESOLUTION_OPTIONS,\n  EXPORT_IMG_RATIO_OPTIONS,\n  RESOLUTIONS,\n  EXPORT_IMG_RATIOS,\n  EXPORT_DATA_TYPE\n} from 'constants/default-settings';\nimport {exportMapToHTML} from 'templates/export-map-html';\nimport {formatCsv} from 'processors/data-processor';\nimport get from 'lodash.get';\nimport {set, generateHashId} from 'utils/utils';\n\nimport KeplerGlSchema from 'schemas';\n\n/**\n * Default file names\n */\nexport const DEFAULT_IMAGE_NAME = 'kepler-gl.png';\nexport const DEFAULT_HTML_NAME = 'kepler.gl.html';\nexport const DEFAULT_JSON_NAME = 'keplergl.json';\nexport const DEFAULT_DATA_NAME = 'kepler-gl';\n\n/**\n * Default json export settings\n * @type {{hasData: boolean}}\n */\nexport const DEFAULT_EXPORT_JSON_SETTINGS = {\n  hasData: true\n};\n\nconst defaultResolution = EXPORT_IMG_RESOLUTION_OPTIONS.find(op => op.id === RESOLUTIONS.ONE_X);\n\nconst defaultRatio = EXPORT_IMG_RATIO_OPTIONS.find(op => op.id === EXPORT_IMG_RATIOS.FOUR_BY_THREE);\n\nexport function getScaleFromImageSize(imageW, imageH, mapW, mapH) {\n  if ([imageW, imageH, mapW, mapH].some(d => d <= 0)) {\n    return 1;\n  }\n\n  const base = imageW / imageH > 1 ? imageW : imageH;\n  const mapBase = imageW / imageH > 1 ? mapW : mapH;\n  const scale = base / mapBase;\n\n  return scale;\n}\n\nexport function calculateExportImageSize({mapW, mapH, ratio, resolution}) {\n  if (mapW <= 0 || mapH <= 0) {\n    return null;\n  }\n\n  const ratioItem = EXPORT_IMG_RATIO_OPTIONS.find(op => op.id === ratio) || defaultRatio;\n\n  const resolutionItem =\n    EXPORT_IMG_RESOLUTION_OPTIONS.find(op => op.id === resolution) || defaultResolution;\n\n  const {width: scaledWidth, height: scaledHeight} = resolutionItem.getSize(mapW, mapH);\n\n  const {width: imageW, height: imageH} = ratioItem.getSize(scaledWidth, scaledHeight);\n\n  const {scale} = ratioItem.id === EXPORT_IMG_RATIOS.CUSTOM ? {} : resolutionItem;\n\n  return {\n    scale,\n    imageW,\n    imageH\n  };\n}\n\nexport function convertToPng(sourceElem, options) {\n  return domtoimage.toPng(sourceElem, options);\n}\n\nexport function dataURItoBlob(dataURI) {\n  const binary = atob(dataURI.split(',')[1]);\n\n  // separate out the mime component\n  const mimeString = dataURI\n    .split(',')[0]\n    .split(':')[1]\n    .split(';')[0];\n\n  // write the bytes of the string to an ArrayBuffer\n  const ab = new ArrayBuffer(binary.length);\n\n  // create a view into the buffer\n  const ia = new Uint8Array(ab);\n\n  for (let i = 0; i < binary.length; i++) {\n    ia[i] = binary.charCodeAt(i);\n  }\n\n  return new Blob([ab], {type: mimeString});\n}\n\nexport function downloadFile(fileBlob, filename) {\n  const url = URL.createObjectURL(fileBlob);\n\n  const link = document.createElement('a');\n  link.setAttribute('href', url);\n  link.setAttribute('download', filename);\n\n  document.body.appendChild(link);\n  link.click();\n  document.body.removeChild(link);\n  URL.revokeObjectURL(url);\n}\n\nexport function exportImage(state) {\n  const {imageDataUri} = state.uiState.exportImage;\n  if (imageDataUri) {\n    const file = dataURItoBlob(imageDataUri);\n    downloadFile(file, DEFAULT_IMAGE_NAME);\n  }\n}\n\nexport function exportToJsonString(data) {\n  try {\n    return JSON.stringify(data);\n  } catch (e) {\n    return e.description;\n  }\n}\n\nexport function getMapJSON(state, options = DEFAULT_EXPORT_JSON_SETTINGS) {\n  const {hasData} = options;\n\n  if (!hasData) {\n    return KeplerGlSchema.getConfigToSave(state);\n  }\n\n  let mapToSave = KeplerGlSchema.save(state);\n  // add file name if title is not provided\n  const title = get(mapToSave, ['info', 'title']);\n  if (!title || !title.length) {\n    mapToSave = set(['info', 'title'], `keplergl_${generateHashId(6)}`, mapToSave);\n  }\n  return mapToSave;\n}\n\nexport function exportJson(state, options = {}) {\n  const map = getMapJSON(state, options);\n\n  const fileBlob = new Blob([exportToJsonString(map)], {type: 'application/json'});\n  downloadFile(fileBlob, DEFAULT_JSON_NAME);\n}\n\nexport function exportHtml(state, options) {\n  const {userMapboxToken, exportMapboxAccessToken, mode} = options;\n\n  const data = {\n    ...getMapJSON(state),\n    mapboxApiAccessToken:\n      (userMapboxToken || '') !== '' ? userMapboxToken : exportMapboxAccessToken,\n    mode\n  };\n\n  const fileBlob = new Blob([exportMapToHTML(data)], {type: 'text/html'});\n  downloadFile(fileBlob, DEFAULT_HTML_NAME);\n}\n\nexport function exportData(state, option) {\n  const {visState} = state;\n  const {datasets} = visState;\n  const {selectedDataset, dataType, filtered} = option;\n  // get the selected data\n  const filename = DEFAULT_DATA_NAME;\n  const selectedDatasets = datasets[selectedDataset]\n    ? [datasets[selectedDataset]]\n    : Object.values(datasets);\n  if (!selectedDatasets.length) {\n    // error: selected dataset not found.\n    return;\n  }\n\n  selectedDatasets.forEach(selectedData => {\n    const {allData, fields, label, filteredIdxCPU = []} = selectedData;\n    const toExport = filtered ? filteredIdxCPU.map(i => allData[i]) : allData;\n    // start to export data according to selected data type\n    switch (dataType) {\n      case EXPORT_DATA_TYPE.CSV: {\n        const csv = formatCsv(toExport, fields);\n\n        const fileBlob = new Blob([csv], {type: 'text/csv'});\n        downloadFile(fileBlob, `${filename}_${label}.csv`);\n        break;\n      }\n      // TODO: support more file types.\n      default:\n        break;\n    }\n  });\n}\n\nexport function exportMap(state, option) {\n  const {imageDataUri} = state.uiState.exportImage;\n  const thumbnail = imageDataUri ? dataURItoBlob(imageDataUri) : null;\n  const mapToSave = getMapJSON(state, option);\n\n  return {\n    map: mapToSave,\n    thumbnail\n  };\n}\n\nconst exporters = {\n  exportImage,\n  exportJson,\n  exportHtml,\n  exportData\n};\n\nexport default exporters;\n"]}