d3-annotation: Responsive Types and Hover

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license: mit

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README.md

Responsive Types and Hover Example

Made with d3.annotation. An example showing how you can dynamically change the annotation type and add hover events.

forked from susielu's block: d3-annotation: Responsive Types and Hover

data.hidden.tsv

index-es6.js

   // line chart code: https://bl.ocks.org/d3noob/402dd382a51a4f6eea487f9a35566de0
    // time series from: http://bl.ocks.org/mbostock/3883245
    // set the dimensions and margins of the graph
    const margin = {top: 20, right: 20, bottom: 30, left: 50},
    height = 500 - margin.top - margin.bottom;
    const maxWidth = 860 - margin.left - margin.right;
    let width = 860 - margin.left - margin.right;


    const parseTime = d3.timeParse("%d-%b-%y");
    const x = d3.scaleTime().range([0, width]);
    const y = d3.scaleLinear().range([height, 0]);

    const valueline = d3.line()
    .x(d => x(d.date))
    .y(d => y(d.close));

    const svg = d3.select("svg")
    .attr("width", 960)
    .attr("height", height + margin.top + margin.bottom)
    .append("g")
    .attr("transform",
          "translate(" + margin.left + "," + margin.top + ")");

    d3.tsv("data.hidden.tsv", function(error, data) {
      if (error) throw error;

      data.forEach(function(d) {
        d.date = parseTime(d.date);
        d.close = +d.close;
      });

      x.domain(d3.extent(data, d => d.date));
      y.domain([0, d3.max(data, d => d.close)]);

      svg.append("path")
        .data([data])
        .attr("class", "line")
        .attr("d", valueline);

      svg.append("g")
        .attr("class", "x-axis")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x));

      svg.append("g")
        .call(d3.axisLeft(y));

      //Add annotations
      const labels = [
        {
          data: {date: "9-Apr-12",	close: 636.23},
          dy: 37,
          dx: -142,
          subject: { text: 'C', y:"bottom" },
          id: "minimize-badge"
        },
        {
          data: {date: "26-Feb-08",	close: 119.15},
          dy: -137,
          dx: 0,
          note: { align: "middle"},
          subject: { text: 'A', y:"bottom" },
          id: "minimize-badge"
        },
        {
          data: {date: "18-Sep-09",	close: 185.02},
          dy: 37,
          dx: 42,
          subject: { text: 'B'},
          id: "minimize-badge"

        }
      ].map(l => {
        l.note = Object.assign({}, l.note, { title: `Close: ${l.data.close}`,
          label: `${l.data.date}`})
        return l
      })

      //using a separate type of annotation to control the resize functionality
      const resize = [{
        subject: {
          y1: 0,
          y2: height
        },
        x: width,
        dx: 10,
        dy: height/2,
        disable: ["connector"],
        note: { 
          title: "< >",
          label: "drag to resize", 
          lineType: "none"
        }
      }]

      const timeFormat = d3.timeFormat("%d-%b-%y")
      
      window.makeAnnotations = d3.annotation()
        .annotations(labels)
        .type(d3.annotationCalloutElbow)
        .accessors({ x: d => x(parseTime(d.date)), 
          y: d => y(d.close)
        })
        .accessorsInverse({
          date: d => timeFormat(x.invert(d.x)),
          close: d => y.invert(d.y) 
        })
        .on('subjectover', function(annotation) {

          //cannot reference this if you are using es6 function syntax
          this.append('text')
            .attr('class', 'hover')
            .text(annotation.note.title)
            .attr('text-anchor', 'middle')
            .attr('y', (annotation.subject.y && annotation.subject.y == "bottom") ? 50 : -40)
            .attr('x', -15)

          this.append('text')
            .attr('class', 'hover')
            .text(annotation.note.label)
            .attr('text-anchor', 'middle')
            .attr('y', (annotation.subject.y && annotation.subject.y == "bottom") ? 70 : -60)
            .attr('x', -15)
        })
        .on('subjectout', function(annotation) {
          this.selectAll('text.hover')
          .remove()
        })

      //Isn't using data for placement so accessors and accessorsInverse
      //are not necessary
      window.makeResize = d3.annotation()
        .annotations(resize)
        .type(d3.annotationXYThreshold)

      svg.append("g")
        .attr("class", "annotation-test")
        .call(makeAnnotations)

      svg.append("g")
        .attr("class", "annotation-resize")
        .call(makeResize)

      svg.select(".annotation.xythreshold")
        .call(d3.drag()
          .on("drag", function(d) {
            const newWidth = Math.max(0, Math.min(maxWidth, d.x + d3.event.dx))
            d.x = newWidth

            const threshold = 400
            if (newWidth < threshold && width >= threshold){
              makeAnnotations.type(d3.annotationBadge)
              svg.select("g.annotation-test").call(makeAnnotations)
            } else if (newWidth > threshold && width <= threshold) {
              makeAnnotations.type(d3.annotationCalloutElbow)
              svg.select("g.annotation-test").call(makeAnnotations)
            }

            width = newWidth

            x.range([0, width])
            makeAnnotations.updatedAccessors()
            makeResize.updatedAccessors()

            svg.select("g.x-axis")
              .call(d3.axisBottom(x));

            svg.select("path.line")
              .attr("d", valueline);

          })
        )
    })

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <link href='https://fonts.googleapis.com/css?family=Lato:300,900' rel='stylesheet' type='text/css'>

    <style>
     body{
        background-color: whitesmoke;
     }

    :root {
      --accent-color: #E8336D;
    }

     svg {
        background-color: white;
        font-family: 'Lato';
     }

     path.line {
        fill: none;
        stroke: black;
        stroke-width: 1px;
      }

    .annotation path {
      stroke: var(--accent-color);
      fill: none;
    }

    .annotation path.connector-arrow{
      fill: var(--accent-color);
    }

    .annotation text {
      fill: var(--accent-color);
    }

    .annotation-note-title {
      font-weight: bold;
    }

    .annotation.xythreshold {
      cursor: move;
    }

    .annotation.xythreshold .annotation-subject{
      stroke-width: 3px;
    }

    .annotation.badge path.subject-pointer, .annotation.badge path.subject {
      fill: var(--accent-color);
      stroke-width: 3px;
      stroke-linecap: round;
    } 

    .annotation.badge path.subject-ring {
      fill: white;
      stroke-width: 3px;
    }

    .annotation.badge .badge-text {
      fill: white;
      font-size: .7em;
    }
        
    rect.annotation-note-bg {
      fill: rgba(255, 255, 255, 0);
    }

    text.hover {
      font-size: .7em;
    }
    </style>
</head>
<body>
    <svg width=960 height=500></svg>
    <script src="https://d3js.org/d3.v4.js"></script>
    <script src="https://rawgit.com/susielu/d3-annotation/master/d3-annotation.min.js"></script>
    <script src="index.js"></script>
</body>
</html>

index.js

"use strict";

// line chart code: https://bl.ocks.org/d3noob/402dd382a51a4f6eea487f9a35566de0
// time series from: http://bl.ocks.org/mbostock/3883245
// set the dimensions and margins of the graph
var margin = { top: 20, right: 20, bottom: 30, left: 50 },
    height = 500 - margin.top - margin.bottom;
var maxWidth = 860 - margin.left - margin.right;
var width = 860 - margin.left - margin.right;

var parseTime = d3.timeParse("%Y");
var _x = d3.scaleTime().range([0, width]);
var _y = d3.scaleLinear().range([height, 0]);

var valueline = d3.line().x(function (d) {
  return _x(d.date);
}).y(function (d) {
  return _y(d.close);
});

var svg = d3.select("svg").attr("width", 960).attr("height", height + margin.top + margin.bottom).append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");

d3.tsv("data.hidden.tsv", function (error, data) {
  if (error) throw error;

  data.forEach(function (d) {
    d.date = parseTime(d.date);
    d.close = +d.close;
  });

  _x.domain(d3.extent(data, function (d) {
    return d.date;
  }));
  _y.domain([0, d3.max(data, function (d) {
    return d.close;
  })]);

  svg.append("path").data([data]).attr("class", "line").attr("d", valueline);

  svg.append("g").attr("class", "x-axis").attr("transform", "translate(0," + height + ")").call(d3.axisBottom(_x));

  svg.append("g").call(d3.axisLeft(_y));

  //Add annotations
  var labels = [{
    data: { date: "9-Apr-12", close: 636.23 },
    dy: 37,
    dx: -142,
    subject: { text: 'C', y: "bottom" },
    id: "minimize-badge"
  }, {
    data: { date: "26-Feb-08", close: 119.15 },
    dy: -137,
    dx: 0,
    note: { align: "middle" },
    subject: { text: 'A', y: "bottom" },
    id: "minimize-badge"
  }, {
    data: { date: "18-Sep-09", close: 185.02 },
    dy: 37,
    dx: 42,
    subject: { text: 'B' },
    id: "minimize-badge"

  }].map(function (l) {
    l.note = Object.assign({}, l.note, { title: "Close: " + l.data.close,
      label: "" + l.data.date });
    return l;
  });

  //using a separate type of annotation to control the resize functionality
  var resize = [{
    subject: {
      y1: 0,
      y2: height
    },
    x: width,
    dx: 10,
    dy: height / 2,
    disable: ["connector"],
    note: {
      title: "< >",
      label: "drag to resize",
      lineType: "none"
    }
  }];

  var timeFormat = d3.timeFormat("%d-%b-%y");

  window.makeAnnotations = d3.annotation().annotations(labels).type(d3.annotationCalloutElbow).accessors({ x: function x(d) {
      return _x(parseTime(d.date));
    },
    y: function y(d) {
      return _y(d.close);
    }
  }).accessorsInverse({
    date: function date(d) {
      return timeFormat(_x.invert(d.x));
    },
    close: function close(d) {
      return _y.invert(d.y);
    }
  }).on('subjectover', function (annotation) {

    //cannot reference this if you are using es6 function syntax
    this.append('text').attr('class', 'hover').text(annotation.note.title).attr('text-anchor', 'middle').attr('y', annotation.subject.y && annotation.subject.y == "bottom" ? 50 : -40).attr('x', -15);

    this.append('text').attr('class', 'hover').text(annotation.note.label).attr('text-anchor', 'middle').attr('y', annotation.subject.y && annotation.subject.y == "bottom" ? 70 : -60).attr('x', -15);
  }).on('subjectout', function (annotation) {
    this.selectAll('text.hover').remove();
  });

  //Isn't using data for placement so accessors and accessorsInverse
  //are not necessary
  window.makeResize = d3.annotation().annotations(resize).type(d3.annotationXYThreshold);

  svg.append("g").attr("class", "annotation-test").call(makeAnnotations);

  svg.append("g").attr("class", "annotation-resize").call(makeResize);

  svg.select(".annotation.xythreshold").call(d3.drag().on("drag", function (d) {
    var newWidth = Math.max(0, Math.min(maxWidth, d.x + d3.event.dx));
    d.x = newWidth;

    var threshold = 400;
    if (newWidth < threshold && width >= threshold) {
      makeAnnotations.type(d3.annotationBadge);
      svg.select("g.annotation-test").call(makeAnnotations);
    } else if (newWidth > threshold && width <= threshold) {
      makeAnnotations.type(d3.annotationCalloutElbow);
      svg.select("g.annotation-test").call(makeAnnotations);
    }

    width = newWidth;

    _x.range([0, width]);
    makeAnnotations.updatedAccessors();
    makeResize.updatedAccessors();

    svg.select("g.x-axis").call(d3.axisBottom(_x));

    svg.select("path.line").attr("d", valueline);
  }));
});