@netdata/charts/dist/chartLibraries/dygraph/plotters/heatmap.js

Netdata frontend SDK and chart utilities

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;
var _heatmap = require("../../../helpers/heatmap");
var _default = exports["default"] = function _default(chartUI) {
  return function (plotter) {
    if (!chartUI) return;

    // We need to handle all the series simultaneously.
    if (plotter.seriesIndex !== 0) return;
    var g = plotter.dygraph;
    var ctx = plotter.drawingContext;
    var sets = plotter.allSeriesPoints;
    var series = g.layout_.setNames;
    var minWidthSep = Infinity;
    sets.forEach(function (points) {
      var widthSep = points[1].canvasx - points[0].canvasx;
      if (widthSep < minWidthSep) minWidthSep = widthSep;
    });
    var barWidth = Math.floor(minWidthSep);
    var getColor = (0, _heatmap.makeGetColor)(chartUI.chart);
    series.forEach(function (seriesName, j) {
      var index = chartUI.chart.getHeatmapYIndex(seriesName);
      if (index === -1) return;
      var height = Math.abs(index === 0 ? g.toDomYCoord(index + 1) - g.toDomYCoord(index) : g.toDomYCoord(index) - g.toDomYCoord(index - 1));
      sets[j].forEach(function (p, i) {
        var rowIndex = Number.isInteger(p.idx) ? p.idx : i;
        var value = chartUI.chart.getDimensionValue(seriesName, rowIndex, {
          allowNull: true
        });
        ctx.fillStyle = getColor(value);
        ctx.fillRect(p.canvasx - barWidth / 2, g.toDomYCoord(index) - height / 2, barWidth, height);
        ctx.strokeStyle = "transparent";
        ctx.strokeRect(p.canvasx - barWidth / 2, g.toDomYCoord(index) - height / 2, barWidth, height);
      });
    });
  };
};