apexcharts/src/modules/annotations/PointsAnnotations.js

A JavaScript Chart Library

import Utils from '../../utils/Utils'
import Helpers from './Helpers'

export default class PointAnnotations {
  constructor(annoCtx) {
    this.w = annoCtx.w
    this.annoCtx = annoCtx
    this.helpers = new Helpers(this.annoCtx)
  }

  addPointAnnotation(anno, parent, index) {
    const w = this.w

    let x = this.helpers.getX1X2('x1', anno)
    let y = this.helpers.getY1Y2('y1', anno)

    if (!Utils.isNumber(x)) return

    let optsPoints = {
      pSize: anno.marker.size,
      pointStrokeWidth: anno.marker.strokeWidth,
      pointFillColor: anno.marker.fillColor,
      pointStrokeColor: anno.marker.strokeColor,
      shape: anno.marker.shape,
      pRadius: anno.marker.radius,
      class: `apexcharts-point-annotation-marker ${anno.marker.cssClass} ${
        anno.id ? anno.id : ''
      }`
    }

    let point = this.annoCtx.graphics.drawMarker(
      x + anno.marker.offsetX,
      y + anno.marker.offsetY,
      optsPoints
    )

    parent.appendChild(point.node)

    const text = anno.label.text ? anno.label.text : ''

    let elText = this.annoCtx.graphics.drawText({
      x: x + anno.label.offsetX,
      y:
        y +
        anno.label.offsetY -
        anno.marker.size -
        parseFloat(anno.label.style.fontSize) / 1.6,
      text,
      textAnchor: anno.label.textAnchor,
      fontSize: anno.label.style.fontSize,
      fontFamily: anno.label.style.fontFamily,
      fontWeight: anno.label.style.fontWeight,
      foreColor: anno.label.style.color,
      cssClass: `apexcharts-point-annotation-label ${
        anno.label.style.cssClass
      } ${anno.id ? anno.id : ''}`
    })

    elText.attr({
      rel: index
    })

    parent.appendChild(elText.node)

    // TODO: deprecate this as we will use custom
    if (anno.customSVG.SVG) {
      let g = this.annoCtx.graphics.group({
        class:
          'apexcharts-point-annotations-custom-svg ' + anno.customSVG.cssClass
      })

      g.attr({
        transform: `translate(${x + anno.customSVG.offsetX}, ${y +
          anno.customSVG.offsetY})`
      })

      g.node.innerHTML = anno.customSVG.SVG
      parent.appendChild(g.node)
    }

    if (anno.image.path) {
      let imgWidth = anno.image.width ? anno.image.width : 20
      let imgHeight = anno.image.height ? anno.image.height : 20

      point = this.annoCtx.addImage({
        x: x + anno.image.offsetX - imgWidth / 2,
        y: y + anno.image.offsetY - imgHeight / 2,
        width: imgWidth,
        height: imgHeight,
        path: anno.image.path,
        appendTo: '.apexcharts-point-annotations'
      })
    }

    if (anno.mouseEnter) {
      point.node.addEventListener(
        'mouseenter',
        anno.mouseEnter.bind(this, anno)
      )
    }
    if (anno.mouseLeave) {
      point.node.addEventListener(
        'mouseleave',
        anno.mouseLeave.bind(this, anno)
      )
    }
    if (anno.click) {
      point.node.addEventListener('click', anno.click.bind(this, anno))
    }
  }

  drawPointAnnotations() {
    let w = this.w

    let elg = this.annoCtx.graphics.group({
      class: 'apexcharts-point-annotations'
    })

    w.config.annotations.points.map((anno, index) => {
      this.addPointAnnotation(anno, elg.node, index)
    })

    return elg
  }
}