kish/lib/src/chart.js

Image Charts Tools: Image Chart & Infographics wrapper for Node.js

const api = require("./api");

const Chart = function () {};

Chart.prototype.initialize = function () {
  this.height = 200;
  this.width = 300;
  this.title = {
    color: "",
    size: null,
    align: "",
  };
  this.data = [];
  this.autoScaling = false;
  this.axisLabels = [];
  this.legend = {
    position: "",
    orientation: "",
    order: "",
    color: "",
    size: null,
    disabled: false,
  };
};

Chart.prototype.getType = function () {
  return this.type;
};

Chart.prototype.getData = function () {
  return this.data;
};

Chart.prototype.setWidth = function (width) {
  width = parseInt(width, 10);
  this.width = width;
};

Chart.prototype.setHeight = function (height) {
  height = parseInt(height, 10);
  this.height = height;
};

Chart.prototype.setTransparentBackground = function () {
  this.background = {};
  this.background.fill = "s";
  this.background.color = "00000000";
};

Chart.prototype.setTitle = function (title) {
  this.title.text = title;
};

Chart.prototype.setTitleColor = function (color) {
  this.title.color = color || "000000";
};

Chart.prototype.setTitleSize = function (size) {
  this.title.size = size || 12;
};

Chart.prototype.setTitleLeft = function (align) {
  this.title.align = "l";
};

Chart.prototype.setTitleRight = function (align) {
  this.title.align = "r";
};

Chart.prototype.setLegendSize = function (size) {
  this.legend.size = size;
};

Chart.prototype.setLegendColor = function (color) {
  this.legend.color = color;
};

Chart.prototype.setLegendBottom = function (position) {
  this.legend.position = "b";
};

Chart.prototype.setLegendTop = function (position) {
  this.legend.position = "t";
};

Chart.prototype.setLegendLeft = function (position) {
  this.legend.position = "l";
  this.legend.orientation = "";
};

Chart.prototype.setLegendRight = function (position) {
  this.legend.position = "r";
  this.legend.orientation = "";
};

Chart.prototype.setLegendVertical = function (position) {
  if (["r", "l"].indexOf(this.legend.position) === -1) {
    this.legend.orientation = "v";
  }
};

Chart.prototype.setLegendHorizontal = function (position) {
  this.legend.orientation = "";
};

Chart.prototype.setLegendHidden = function (position) {
  this.legend.disabled = true;
  if (["r", "l"].indexOf(this.legend.position) === -1) {
    this.legend.orientation = "v";
  }
};

Chart.prototype.setLegendOrder = function (order) {
  this.legend.order = order;
};

Chart.prototype.addAxisLabels = function (axis, label) {
  this.axisLabels.push({
    axis: axis,
    label: label,
  });
};

Chart.prototype.addData = function (data, label, color, extras) {
  const dataItem = {
    values: data,
    label: label,
    color: color,
  };

  if (typeof extras === "object") {
    Object.keys(extras).forEach(function (item) {
      dataItem[item] = extras[item];
    });
  }

  return this.data.push(dataItem);
};

Chart.prototype.setAutoScaling = function () {
  this.autoScaling = true;

  if (!this.getAxisLabel("y")) {
    this.addAxisLabels("y");
  }
};

Chart.prototype.getAxisLabel = function (name) {
  let axis;
  const labels = this.axisLabels;

  for (let i = 0, l = labels.length; i < l; i++) {
    const item = labels[i];
    if (item.axis === name) {
      axis = item;
      break;
    }
  }

  return axis;
};

Chart.prototype.setHostname = function (hostname) {
  return api.setHostname(hostname);
};

Chart.prototype.getUrl = function (secure) {
  return api.createUrl(this, secure);
};

Chart.prototype.getReq = function (secure, callback) {
  return api.getReq(this, secure, callback);
};

Chart.prototype.getPostReq = function (secure, callback) {
  return api.getPostReq(this, secure, callback);
};

module.exports = Chart;