kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
211 lines (176 loc) • 24.7 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.getDefaultLayerGroupVisibility = getDefaultLayerGroupVisibility;
exports.isValidStyleUrl = isValidStyleUrl;
exports.getStyleDownloadUrl = getStyleDownloadUrl;
exports.getStyleImageIcon = getStyleImageIcon;
exports.scaleMapStyleByResolution = scaleMapStyleByResolution;
exports.mergeLayerGroupVisibility = mergeLayerGroupVisibility;
exports.editBottomMapStyle = exports.editTopMapStyle = void 0;
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _lodash = _interopRequireDefault(require("lodash.memoize"));
var _lodash2 = _interopRequireDefault(require("lodash.clonedeep"));
var _defaultSettings = require("../../constants/default-settings");
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; }
var mapUrlRg = /^mapbox:\/\/styles\/[-a-z0-9]{2,256}\/[-a-z0-9]{2,256}/;
var httpRg = /^(?=(http:|https:))/;
function getDefaultLayerGroupVisibility(_ref) {
var _ref$layerGroups = _ref.layerGroups,
layerGroups = _ref$layerGroups === void 0 ? [] : _ref$layerGroups;
return layerGroups.reduce(function (accu, layer) {
return _objectSpread({}, accu, (0, _defineProperty2["default"])({}, layer.slug, layer.defaultVisibility));
}, {});
}
var resolver = function resolver(_ref2) {
var id = _ref2.id,
mapStyle = _ref2.mapStyle,
_ref2$visibleLayerGro = _ref2.visibleLayerGroups,
visibleLayerGroups = _ref2$visibleLayerGro === void 0 ? {} : _ref2$visibleLayerGro;
return "".concat(id, ":").concat(Object.keys(visibleLayerGroups).filter(function (d) {
return visibleLayerGroups[d];
}).sort().join('-'));
};
/**
* Edit preset map style to keep only visible layers
*
* @param {Object} mapStyle - preset map style
* @param {Object} visibleLayerGroups - visible layers of top map
* @returns {Object} top map style
*/
var editTopMapStyle = (0, _lodash["default"])(function (_ref3) {
var id = _ref3.id,
mapStyle = _ref3.mapStyle,
visibleLayerGroups = _ref3.visibleLayerGroups;
var visibleFilters = (mapStyle.layerGroups || []).filter(function (lg) {
return visibleLayerGroups[lg.slug];
}).map(function (lg) {
return lg.filter;
}); // if top map
// keep only visible layers
var filteredLayers = mapStyle.style.layers.filter(function (layer) {
return visibleFilters.some(function (match) {
return match(layer);
});
});
return _objectSpread({}, mapStyle.style, {
layers: filteredLayers
});
}, resolver);
/**
* Edit preset map style to filter out invisible layers
*
* @param {Object} mapStyle - preset map style
* @param {Object} visibleLayerGroups - visible layers of bottom map
* @returns {Object} bottom map style
*/
exports.editTopMapStyle = editTopMapStyle;
var editBottomMapStyle = (0, _lodash["default"])(function (_ref4) {
var id = _ref4.id,
mapStyle = _ref4.mapStyle,
visibleLayerGroups = _ref4.visibleLayerGroups;
var invisibleFilters = (mapStyle.layerGroups || []).filter(function (lg) {
return !visibleLayerGroups[lg.slug];
}).map(function (lg) {
return lg.filter;
}); // if bottom map
// filter out invisible layers
var filteredLayers = mapStyle.style.layers.filter(function (layer) {
return invisibleFilters.every(function (match) {
return !match(layer);
});
});
return _objectSpread({}, mapStyle.style, {
layers: filteredLayers
});
}, resolver); // valid style url
// mapbox://styles/uberdata/cjfyl03kp1tul2smf5v2tbdd4
// lowercase letters, numbers and dashes only.
exports.editBottomMapStyle = editBottomMapStyle;
function isValidStyleUrl(url) {
return typeof url === 'string' && Boolean(url.match(mapUrlRg) || url.match(httpRg));
}
function getStyleDownloadUrl(styleUrl, accessToken, mapboxApiUrl) {
if (styleUrl.startsWith('http')) {
return styleUrl;
} // mapbox://styles/jckr/cjhcl0lxv13di2rpfoytdbdyj
if (styleUrl.startsWith('mapbox://styles')) {
var styleId = styleUrl.replace('mapbox://styles/', ''); // https://api.mapbox.com/styles/v1/heshan0131/cjg1bfumo1cwm2rlrjxkinfgw?pluginName=Keplergl&access_token=<token>
return "".concat(mapboxApiUrl || _defaultSettings.DEFAULT_MAPBOX_API_URL, "/styles/v1/").concat(styleId, "?pluginName=Keplergl&access_token=").concat(accessToken);
} // style url not recognized
return null;
}
/**
* Generate static map image from style Url to be used as icon
* @param {Object} param
* @param {string} param.styleUrl
* @param {string} param.mapboxApiAccessToken
* @param {string} param.mapboxApiUrl
* @param {Object} param.mapState
* @param {numbers} param.mapW
* @param {numbers} param.mapH
*/
function getStyleImageIcon(_ref5) {
var styleUrl = _ref5.styleUrl,
mapboxApiAccessToken = _ref5.mapboxApiAccessToken,
_ref5$mapboxApiUrl = _ref5.mapboxApiUrl,
mapboxApiUrl = _ref5$mapboxApiUrl === void 0 ? _defaultSettings.DEFAULT_MAPBOX_API_URL : _ref5$mapboxApiUrl,
_ref5$mapState = _ref5.mapState,
mapState = _ref5$mapState === void 0 ? {
longitude: -122.3391,
latitude: 37.7922,
zoom: 9
} : _ref5$mapState,
_ref5$mapW = _ref5.mapW,
mapW = _ref5$mapW === void 0 ? 400 : _ref5$mapW,
_ref5$mapH = _ref5.mapH,
mapH = _ref5$mapH === void 0 ? 300 : _ref5$mapH;
var styleId = styleUrl.replace('mapbox://styles/', '');
return "".concat(mapboxApiUrl, "/styles/v1/").concat(styleId, "/static/") + "".concat(mapState.longitude, ",").concat(mapState.latitude, ",").concat(mapState.zoom, ",0,0/") + "".concat(mapW, "x").concat(mapH) + "?access_token=".concat(mapboxApiAccessToken, "&logo=false&attribution=false");
}
function scaleMapStyleByResolution(mapboxStyle, scale) {
if (scale !== 1 && mapboxStyle) {
var labelLayerGroup = _defaultSettings.DEFAULT_LAYER_GROUPS.find(function (lg) {
return lg.slug === 'label';
});
var labelLayerFilter = labelLayerGroup.filter;
var zoomOffset = Math.log2(scale);
var copyStyle = (0, _lodash2["default"])(mapboxStyle);
(copyStyle.layers || []).forEach(function (d) {
// edit minzoom and maxzoom
if (d.maxzoom) {
d.maxzoom = Math.max(d.maxzoom + zoomOffset, 1);
}
if (d.minzoom) {
d.minzoom = Math.max(d.minzoom + zoomOffset, 1);
} // edit text size
if (labelLayerFilter(d)) {
if (d.layout && d.layout['text-size'] && Array.isArray(d.layout['text-size'].stops)) {
d.layout['text-size'].stops.forEach(function (stop) {
// zoom
stop[0] = Math.max(stop[0] + zoomOffset, 1); // size
stop[1] *= scale;
});
}
}
});
return copyStyle;
}
return mapboxStyle;
}
/**
* When switch to a new style, try to keep current layer group visibility
* by merging default and current
* @param {Object} defaultLayerGroup
* @param {Object} currentLayerGroup
* @return {Object} mergedLayerGroups
*/
function mergeLayerGroupVisibility(defaultLayerGroup, currentLayerGroup) {
return Object.keys(currentLayerGroup).reduce(function (accu, key) {
return _objectSpread({}, accu, {}, defaultLayerGroup.hasOwnProperty(key) ? (0, _defineProperty2["default"])({}, key, currentLayerGroup[key]) : {});
}, defaultLayerGroup);
}
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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 memoize from 'lodash.memoize';\nimport clondDeep from 'lodash.clonedeep';\nimport {DEFAULT_LAYER_GROUPS, DEFAULT_MAPBOX_API_URL} from 'constants/default-settings';\n\nconst mapUrlRg = /^mapbox:\\/\\/styles\\/[-a-z0-9]{2,256}\\/[-a-z0-9]{2,256}/;\nconst httpRg = /^(?=(http:|https:))/;\n\nexport function getDefaultLayerGroupVisibility({layerGroups = []}) {\n  return layerGroups.reduce(\n    (accu, layer) => ({\n      ...accu,\n      [layer.slug]: layer.defaultVisibility\n    }),\n    {}\n  );\n}\n\nconst resolver = ({id, mapStyle, visibleLayerGroups = {}}) =>\n  `${id}:${Object.keys(visibleLayerGroups)\n    .filter(d => visibleLayerGroups[d])\n    .sort()\n    .join('-')}`;\n\n/**\n * Edit preset map style to keep only visible layers\n *\n * @param {Object} mapStyle - preset map style\n * @param {Object} visibleLayerGroups - visible layers of top map\n * @returns {Object} top map style\n */\nexport const editTopMapStyle = memoize(({id, mapStyle, visibleLayerGroups}) => {\n  const visibleFilters = (mapStyle.layerGroups || [])\n    .filter(lg => visibleLayerGroups[lg.slug])\n    .map(lg => lg.filter);\n\n  // if top map\n  // keep only visible layers\n  const filteredLayers = mapStyle.style.layers.filter(layer =>\n    visibleFilters.some(match => match(layer))\n  );\n\n  return {\n    ...mapStyle.style,\n    layers: filteredLayers\n  };\n}, resolver);\n\n/**\n * Edit preset map style to filter out invisible layers\n *\n * @param {Object} mapStyle - preset map style\n * @param {Object} visibleLayerGroups - visible layers of bottom map\n * @returns {Object} bottom map style\n */\nexport const editBottomMapStyle = memoize(({id, mapStyle, visibleLayerGroups}) => {\n  const invisibleFilters = (mapStyle.layerGroups || [])\n    .filter(lg => !visibleLayerGroups[lg.slug])\n    .map(lg => lg.filter);\n\n  // if bottom map\n  // filter out invisible layers\n  const filteredLayers = mapStyle.style.layers.filter(layer =>\n    invisibleFilters.every(match => !match(layer))\n  );\n\n  return {\n    ...mapStyle.style,\n    layers: filteredLayers\n  };\n}, resolver);\n\n// valid style url\n// mapbox://styles/uberdata/cjfyl03kp1tul2smf5v2tbdd4\n// lowercase letters, numbers and dashes only.\nexport function isValidStyleUrl(url) {\n  return typeof url === 'string' && Boolean(url.match(mapUrlRg) || url.match(httpRg));\n}\n\nexport function getStyleDownloadUrl(styleUrl, accessToken, mapboxApiUrl) {\n  if (styleUrl.startsWith('http')) {\n    return styleUrl;\n  }\n\n  // mapbox://styles/jckr/cjhcl0lxv13di2rpfoytdbdyj\n  if (styleUrl.startsWith('mapbox://styles')) {\n    const styleId = styleUrl.replace('mapbox://styles/', '');\n\n    // https://api.mapbox.com/styles/v1/heshan0131/cjg1bfumo1cwm2rlrjxkinfgw?pluginName=Keplergl&access_token=<token>\n    return `${mapboxApiUrl ||\n      DEFAULT_MAPBOX_API_URL}/styles/v1/${styleId}?pluginName=Keplergl&access_token=${accessToken}`;\n  }\n\n  // style url not recognized\n  return null;\n}\n\n/**\n * Generate static map image from style Url to be used as icon\n * @param {Object} param\n * @param {string} param.styleUrl\n * @param {string} param.mapboxApiAccessToken\n * @param {string} param.mapboxApiUrl\n * @param {Object} param.mapState\n * @param {numbers} param.mapW\n * @param {numbers} param.mapH\n */\nexport function getStyleImageIcon({\n  styleUrl,\n  mapboxApiAccessToken,\n  mapboxApiUrl = DEFAULT_MAPBOX_API_URL,\n  mapState = {\n    longitude: -122.3391,\n    latitude: 37.7922,\n    zoom: 9\n  },\n  mapW = 400,\n  mapH = 300\n}) {\n  const styleId = styleUrl.replace('mapbox://styles/', '');\n\n  return (\n    `${mapboxApiUrl}/styles/v1/${styleId}/static/` +\n    `${mapState.longitude},${mapState.latitude},${mapState.zoom},0,0/` +\n    `${mapW}x${mapH}` +\n    `?access_token=${mapboxApiAccessToken}&logo=false&attribution=false`\n  );\n}\n\nexport function scaleMapStyleByResolution(mapboxStyle, scale) {\n  if (scale !== 1 && mapboxStyle) {\n    const labelLayerGroup = DEFAULT_LAYER_GROUPS.find(lg => lg.slug === 'label');\n    const {filter: labelLayerFilter} = labelLayerGroup;\n    const zoomOffset = Math.log2(scale);\n\n    const copyStyle = clondDeep(mapboxStyle);\n    (copyStyle.layers || []).forEach(d => {\n      // edit minzoom and maxzoom\n      if (d.maxzoom) {\n        d.maxzoom = Math.max(d.maxzoom + zoomOffset, 1);\n      }\n\n      if (d.minzoom) {\n        d.minzoom = Math.max(d.minzoom + zoomOffset, 1);\n      }\n\n      // edit text size\n      if (labelLayerFilter(d)) {\n        if (d.layout && d.layout['text-size'] && Array.isArray(d.layout['text-size'].stops)) {\n          d.layout['text-size'].stops.forEach(stop => {\n            // zoom\n            stop[0] = Math.max(stop[0] + zoomOffset, 1);\n            // size\n            stop[1] *= scale;\n          });\n        }\n      }\n    });\n\n    return copyStyle;\n  }\n\n  return mapboxStyle;\n}\n\n/**\n * When switch to a new style, try to keep current layer group visibility\n * by merging default and current\n * @param {Object} defaultLayerGroup\n * @param {Object} currentLayerGroup\n * @return {Object} mergedLayerGroups\n */\nexport function mergeLayerGroupVisibility(defaultLayerGroup, currentLayerGroup) {\n  return Object.keys(currentLayerGroup).reduce(\n    (accu, key) => ({\n      ...accu,\n      ...(defaultLayerGroup.hasOwnProperty(key) ? {[key]: currentLayerGroup[key]} : {})\n    }),\n    defaultLayerGroup\n  );\n}\n"]}