kepler.gl/dist/layers/layer-text-label.js

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

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getTextOffsetByRadius = getTextOffsetByRadius;
exports.formatTextLabelData = exports.textLabelAccessor = exports.defaultPadding = void 0;

var _viewportMercatorProject = require("viewport-mercator-project");

var _dataUtils = require("../utils/data-utils");

var _lodash = _interopRequireDefault(require("lodash.uniq"));

// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
var defaultPadding = 20;
exports.defaultPadding = defaultPadding;

function getTextOffsetByRadius(radiusScale, getRadius, mapState) {
  return function (textLabel) {
    var distanceScale = (0, _viewportMercatorProject.getDistanceScales)(mapState);
    var xMult = textLabel.anchor === 'middle' ? 0 : textLabel.anchor === 'start' ? 1 : -1;
    var yMult = textLabel.alignment === 'center' ? 0 : textLabel.alignment === 'bottom' ? 1 : -1;
    var sizeOffset = textLabel.alignment === 'center' ? 0 : textLabel.alignment === 'bottom' ? textLabel.size : textLabel.size;
    var pixelRadius = radiusScale * distanceScale.pixelsPerMeter[0];
    var padding = defaultPadding;
    return typeof getRadius === 'function' ? function (d) {
      return [xMult * (getRadius(d) * pixelRadius + padding), yMult * (getRadius(d) * pixelRadius + padding + sizeOffset)];
    } : [xMult * (getRadius * pixelRadius + padding), yMult * (getRadius * pixelRadius + padding + sizeOffset)];
  };
}

var textLabelAccessor = function textLabelAccessor(textLabel) {
  return function (d) {
    var val = d.data[textLabel.field.tableFieldIndex - 1];
    return (0, _dataUtils.notNullorUndefined)(val) ? String(val) : '';
  };
};

exports.textLabelAccessor = textLabelAccessor;

var formatTextLabelData = function formatTextLabelData(_ref) {
  var textLabel = _ref.textLabel,
      triggerChanged = _ref.triggerChanged,
      oldLayerData = _ref.oldLayerData,
      data = _ref.data;
  return textLabel.map(function (tl, i) {
    if (!tl.field) {
      // if no field selected,
      return {
        getText: null,
        characterSet: []
      };
    }

    var getText = textLabelAccessor(tl);
    var characterSet;

    if (!triggerChanged["getLabelCharacterSet-".concat(i)]) {
      characterSet = oldLayerData.textLabels[i].characterSet;
    } else {
      var allLabels = tl.field ? data.map(getText) : [];
      characterSet = (0, _lodash["default"])(allLabels.join(''));
    }

    return {
      characterSet: characterSet,
      getText: getText
    };
  });
};

exports.formatTextLabelData = formatTextLabelData;
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