kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
174 lines (141 loc) • 21.8 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.renderedSize = renderedSize;
exports.adjustCellsToContainer = adjustCellsToContainer;
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
var _document = _interopRequireDefault(require("global/document"));
var _dataUtils = require("../../../utils/data-utils");
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 MIN_GHOST_CELL_SIZE = 200;
/**
* Measure rows and column content to determin min width for each column
* @param {*} param0
*/
function renderedSize(_ref) {
var _ref$text = _ref.text,
rows = _ref$text.rows,
column = _ref$text.column,
_ref$type = _ref.type,
type = _ref$type === void 0 ? 'string' : _ref$type,
colIdx = _ref.colIdx,
_ref$numRowsToCalcula = _ref.numRowsToCalculate,
numRowsToCalculate = _ref$numRowsToCalcula === void 0 ? 10 : _ref$numRowsToCalcula,
_ref$fontSize = _ref.fontSize,
fontSize = _ref$fontSize === void 0 ? 12 : _ref$fontSize,
_ref$font = _ref.font,
font = _ref$font === void 0 ? 'Lato' : _ref$font,
_ref$cellPadding = _ref.cellPadding,
cellPadding = _ref$cellPadding === void 0 ? 30 : _ref$cellPadding,
_ref$maxCellSize = _ref.maxCellSize,
maxCellSize = _ref$maxCellSize === void 0 ? 400 : _ref$maxCellSize,
_ref$maxHeaderSize = _ref.maxHeaderSize,
maxHeaderSize = _ref$maxHeaderSize === void 0 ? 150 : _ref$maxHeaderSize,
_ref$minCellSize = _ref.minCellSize,
minCellSize = _ref$minCellSize === void 0 ? 45 : _ref$minCellSize,
_ref$optionsButton = _ref.optionsButton,
optionsButton = _ref$optionsButton === void 0 ? 30 : _ref$optionsButton;
if (!_document["default"]) {
return {
row: 0,
header: 0
};
}
var textCanvas = _document["default"].createElement('canvas');
_document["default"].body.appendChild(textCanvas);
var context = textCanvas.getContext('2d');
context.font = [fontSize, font].join('px ');
var rowsToSample = (0, _toConsumableArray2["default"])(Array(numRowsToCalculate)).map(function () {
return Math.floor(Math.random() * (rows.length - 1 - 0 + 1));
}); // IF we have less than 10 rows, lets measure all of them
if (rows.length < numRowsToCalculate) {
rowsToSample = Array.from(Array(rows.length).keys());
}
var rowWidth = Math.max.apply(Math, (0, _toConsumableArray2["default"])(rowsToSample.map(function (rowIdx) {
return Math.ceil(context.measureText((0, _dataUtils.parseFieldValue)(rows[rowIdx][colIdx], type)).width) + cellPadding;
}))); // header cell only has left padding
var headerWidth = Math.ceil(context.measureText(column).width) + cellPadding / 2 + optionsButton;
var minRowWidth = minCellSize + cellPadding;
var minHeaderWidth = minCellSize + cellPadding / 2 + optionsButton;
var clampedRowWidth = clamp(minRowWidth, maxCellSize, rowWidth);
var clampedHeaderWidth = clamp(minHeaderWidth, maxHeaderSize, headerWidth); // cleanup
textCanvas.parentElement.removeChild(textCanvas);
return {
row: clampedRowWidth,
header: clampedHeaderWidth
};
}
function clamp(min, max, value) {
return Math.max(Math.min(max, value), min);
}
function getColumnOrder() {
var pinnedColumns = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
var unpinnedColumns = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
return [].concat((0, _toConsumableArray2["default"])(pinnedColumns), (0, _toConsumableArray2["default"])(unpinnedColumns));
}
function getMinCellSize(cellSizeCache) {
return Object.keys(cellSizeCache).reduce(function (accu, col) {
return _objectSpread({}, accu, (0, _defineProperty2["default"])({}, col, cellSizeCache[col].row));
}, {});
}
function getSizeSum(sizeCache, key) {
return Object.keys(sizeCache).reduce(function (acc, val) {
return acc + (key ? sizeCache[val][key] : sizeCache[val]);
}, 0);
}
/**
* Expand cell to fit both row and header, if there is still room left,
* expand last cell to fit the entire width of the container
* @param {object} cellSizeCache
* @param {string[]} columnOrder
* @param {number} containerWidth
* @param {number} roomToFill
*/
function expandCellSize(cellSizeCache, columnOrder, containerWidth, roomToFill) {
var remaining = roomToFill;
var expandedCellSize = columnOrder.reduce(function (accu, col) {
var size = cellSizeCache[col].row;
if (cellSizeCache[col].row < cellSizeCache[col].header && remaining > 0) {
// if we are cutting off the header, expand to fit it
size = cellSizeCache[col].header - cellSizeCache[col].row < remaining ? cellSizeCache[col].header : cellSizeCache[col].row + remaining;
remaining -= size - cellSizeCache[col].row;
}
return _objectSpread({}, accu, (0, _defineProperty2["default"])({}, col, size));
}, {});
var ghost = null;
if (remaining > 0 && remaining < MIN_GHOST_CELL_SIZE) {
// expand last cell
var lastCell = columnOrder[columnOrder.length - 1];
expandedCellSize[lastCell] += remaining;
} else if (remaining >= MIN_GHOST_CELL_SIZE) {
// if too much left add a ghost cell
ghost = remaining;
}
return {
cellSizeCache: expandedCellSize,
ghost: ghost
};
}
/**
* Adjust cell size based on container width
* @param {number} containerWidth
* @param {Object} cellSizeCache
* @param {string[]} pinnedColumns
* @param {string[]} unpinnedColumns
*/
function adjustCellsToContainer(containerWidth, cellSizeCache, pinnedColumns, unpinnedColumns) {
var minRowSum = getSizeSum(cellSizeCache, 'row');
if (minRowSum >= containerWidth) {
// we apply the min Width to all cells
return {
cellSizeCache: getMinCellSize(cellSizeCache)
};
} // if we have some room to expand
var columnOrder = getColumnOrder(pinnedColumns, unpinnedColumns);
return expandCellSize(cellSizeCache, columnOrder, containerWidth, containerWidth - minRowSum);
}
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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 document from 'global/document';\nimport {parseFieldValue} from 'utils/data-utils';\n\nconst MIN_GHOST_CELL_SIZE = 200;\n\n/**\n * Measure rows and column content to determin min width for each column\n * @param {*} param0\n */\nexport function renderedSize({\n  text: {rows, column},\n  type = 'string',\n  colIdx,\n  numRowsToCalculate = 10,\n  fontSize = 12,\n  font = 'Lato',\n  cellPadding = 30,\n  maxCellSize = 400,\n  maxHeaderSize = 150,\n  minCellSize = 45,\n  optionsButton = 30\n}) {\n  if (!document) {\n    return {\n      row: 0,\n      header: 0\n    };\n  }\n  const textCanvas = document.createElement('canvas');\n  document.body.appendChild(textCanvas);\n  const context = textCanvas.getContext('2d');\n  context.font = [fontSize, font].join('px ');\n  let rowsToSample = [...Array(numRowsToCalculate)].map(() =>\n    Math.floor(Math.random() * (rows.length - 1 - 0 + 1))\n  );\n\n  // IF we have less than 10 rows, lets measure all of them\n  if (rows.length < numRowsToCalculate) {\n    rowsToSample = Array.from(Array(rows.length).keys());\n  }\n  const rowWidth = Math.max(\n    ...rowsToSample.map(\n      rowIdx =>\n        Math.ceil(context.measureText(parseFieldValue(rows[rowIdx][colIdx], type)).width) +\n        cellPadding\n    )\n  );\n  // header cell only has left padding\n  const headerWidth =\n    Math.ceil(context.measureText(column).width) + cellPadding / 2 + optionsButton;\n\n  const minRowWidth = minCellSize + cellPadding;\n  const minHeaderWidth = minCellSize + cellPadding / 2 + optionsButton;\n\n  const clampedRowWidth = clamp(minRowWidth, maxCellSize, rowWidth);\n  const clampedHeaderWidth = clamp(minHeaderWidth, maxHeaderSize, headerWidth);\n\n  // cleanup\n  textCanvas.parentElement.removeChild(textCanvas);\n\n  return {\n    row: clampedRowWidth,\n    header: clampedHeaderWidth\n  };\n}\n\nfunction clamp(min, max, value) {\n  return Math.max(Math.min(max, value), min);\n}\n\nfunction getColumnOrder(pinnedColumns = [], unpinnedColumns = []) {\n  return [...pinnedColumns, ...unpinnedColumns];\n}\n\nfunction getMinCellSize(cellSizeCache) {\n  return Object.keys(cellSizeCache).reduce(\n    (accu, col) => ({\n      ...accu,\n      [col]: cellSizeCache[col].row\n    }),\n    {}\n  );\n}\n\nfunction getSizeSum(sizeCache, key) {\n  return Object.keys(sizeCache).reduce(\n    (acc, val) => acc + (key ? sizeCache[val][key] : sizeCache[val]),\n    0\n  );\n}\n\n/**\n * Expand cell to fit both row and header, if there is still room left,\n * expand last cell to fit the entire width of the container\n * @param {object} cellSizeCache\n * @param {string[]} columnOrder\n * @param {number} containerWidth\n * @param {number} roomToFill\n */\nfunction expandCellSize(cellSizeCache, columnOrder, containerWidth, roomToFill) {\n  let remaining = roomToFill;\n\n  const expandedCellSize = columnOrder.reduce((accu, col) => {\n    let size = cellSizeCache[col].row;\n    if (cellSizeCache[col].row < cellSizeCache[col].header && remaining > 0) {\n      // if we are cutting off the header, expand to fit it\n      size =\n        cellSizeCache[col].header - cellSizeCache[col].row < remaining\n          ? cellSizeCache[col].header\n          : cellSizeCache[col].row + remaining;\n      remaining -= size - cellSizeCache[col].row;\n    }\n\n    return {\n      ...accu,\n      [col]: size\n    };\n  }, {});\n\n  let ghost = null;\n  if (remaining > 0 && remaining < MIN_GHOST_CELL_SIZE) {\n    // expand last cell\n    const lastCell = columnOrder[columnOrder.length - 1];\n    expandedCellSize[lastCell] += remaining;\n  } else if (remaining >= MIN_GHOST_CELL_SIZE) {\n    // if too much left add a ghost cell\n    ghost = remaining;\n  }\n\n  return {\n    cellSizeCache: expandedCellSize,\n    ghost\n  };\n}\n\n/**\n * Adjust cell size based on container width\n * @param {number} containerWidth\n * @param {Object} cellSizeCache\n * @param {string[]} pinnedColumns\n * @param {string[]} unpinnedColumns\n */\nexport function adjustCellsToContainer(\n  containerWidth,\n  cellSizeCache,\n  pinnedColumns,\n  unpinnedColumns\n) {\n  const minRowSum = getSizeSum(cellSizeCache, 'row');\n  if (minRowSum >= containerWidth) {\n    // we apply the min Width to all cells\n    return {cellSizeCache: getMinCellSize(cellSizeCache)};\n  }\n\n  // if we have some room to expand\n  const columnOrder = getColumnOrder(pinnedColumns, unpinnedColumns);\n  return expandCellSize(cellSizeCache, columnOrder, containerWidth, containerWidth - minRowSum);\n}\n"]}