basic segments impl

5 months ago · 38b6eb2326
5 changed files with 97 additions and 4 deletions
--- a/examples/segments.html
+++ b/examples/segments.html
@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
+    <meta content="utf-8" http-equiv="encoding">
+
+    <script src="../dist/index.dev.js" type="text/javascript"></script>
+  </head>
+  <body>
+    <div id="chart" style="width: 100%; height: 500px;"></div>
+
+    <script type="text/javascript">
+      const startTime = 1701790172908;
+      const timeSerieData = [5, 6, 3, 7, 5, 6, 8, 4, 5, 6, 4, 3, 5, 7, 8]
+        .map((el, idx) => [startTime + idx * 1000, el]);
+      const segmentsData = [3, 6, 9].map(el => [startTime + el * 1000, startTime + (el + 1) * 1000]);
+      let options = {
+        renderLegend: false,
+        axis: {
+          y: { range: [0, 10] },
+          x: { format: 'time' }
+        },
+      }
+      var pod = new LinePod(
+        document.getElementById('chart'),
+        [
+          { datapoints: timeSerieData, color: 'black' },
+        ],
+        options,
+        [],
+        [
+          { data: segmentsData, color:'#FFE545' }
+        ]
+      );
+      pod.render();
+    </script>
+  </body>
+</html>
--- a/src/components/markers.ts
+++ b/src/components/markers.ts
@ -5,7 +5,7 @@ import { LineTimeSerie, LineOptions } from "../types";
 import d3 from "d3";

 export class Markers {
-  // TODO: more sentic name
+  // TODO: more semantic name
  private _d3Holder = null;

  constructor(private _markers: MarkerSerie[], private _state: PodState<LineTimeSerie, LineOptions>) {
@ -17,11 +17,11 @@ export class Markers {
    }
    this._d3Holder = metricContainer.append('g').attr('class', 'markers-layer');
    for (const ms of this._markers) {
-      this.renderMarkerSerie(ms);
+      this.renderSerie(ms);
    }
  }

-  protected renderMarkerSerie(serie: MarkerSerie) {
+  protected renderSerie(serie: MarkerSerie) {
    serie.data.forEach((d) => {
      let linePosition = this._state.xScale(d) as number;
      this._d3Holder.append('line')
--- a/src/components/segments.ts
+++ b/src/components/segments.ts
@ -0,0 +1,46 @@
+import { SegmentSerie } from "../models/segment";
+import { PodState } from "@chartwerk/core";
+import { LineTimeSerie, LineOptions } from "../types";
+
+import d3 from "d3";
+
+export class Segments {
+  // TODO: more semantic name
+  private _d3Holder = null;
+
+  constructor(private _series: SegmentSerie[], private _state: PodState<LineTimeSerie, LineOptions>) {
+  }
+
+  render(metricContainer: d3.Selection<SVGGElement, unknown, null, undefined>) {
+    if(this._d3Holder !== null) {
+      this._d3Holder.remove();
+    }
+    this._d3Holder = metricContainer.append('g').attr('class', 'markers-layer');
+    for (const s of this._series) {
+      this.renderSerie(s);
+    }
+  }
+
+  protected renderSerie(serie: SegmentSerie) {
+    serie.data.forEach((d) => {
+
+      // @ts-ignore
+      const startPositionX = pod.state.xScale(d[0]) as number;
+      // @ts-ignore
+      const endPositionX = pod.state.xScale(d[1]) as number;
+      const width = endPositionX - startPositionX // Math.max(endPositionX - startPositionX, MIMIMUM_SEGMENT_WIDTH);
+      
+      this._d3Holder.append('rect')
+        .attr('class', 'segment')
+        .attr('x', startPositionX)
+        .attr('y', 0)
+        .attr('width', width)
+        // @ts-ignore // TODO: remove ignore but boxParams are protected
+        .attr('height', this._state.boxParams.height)
+        .attr('opacity', 0.3)
+        .style('fill', serie.color)
+        .style('pointer-events', 'none');
+    });
+
+  }
+}
--- a/src/index.ts
+++ b/src/index.ts
@ -1,6 +1,7 @@
 import { ChartwerkPod, VueChartwerkPodMixin, TimeFormat, CrosshairOrientation, BrushOrientation, yAxisOrientation } from '@chartwerk/core';
 import { LineTimeSerie, LineOptions } from './types';
 import { Markers } from './components/markers';
+import { Segments } from './components/segments';

 import { LineSeries } from './models/line_series';

@ -19,10 +20,12 @@ export class LinePod extends ChartwerkPod<LineTimeSerie, LineOptions> {
  areaGeneratorY1 = null;

  private _markersLayer: Markers = null;
+  private _segmentsLayer: Segments = null;

  constructor(
    _el: HTMLElement, _series: LineTimeSerie[] = [], _options: LineOptions = {},
-    private _markerSeries = []
+    private _markerSeries = [], 
+    private _segmentSeries = [], 
  ) {
    super(_el, _series, _options);
    this.series = new LineSeries(_series);
@ -44,6 +47,8 @@ export class LinePod extends ChartwerkPod<LineTimeSerie, LineOptions> {
    }
    this._markersLayer = new Markers(this._markerSeries, this.state);
    this._markersLayer.render(this.metricContainer);
+    this._segmentsLayer = new Segments(this._segmentSeries, this.state);
+    this._segmentsLayer.render(this.metricContainer);
  }

  clearAllMetrics(): void {
--- a/src/models/segment.ts
+++ b/src/models/segment.ts
@ -0,0 +1,4 @@
+export type SegmentSerie = {
+  color: string;
+  data: [number, number, any][] // [from, to, payload] payload is any data for tooltip
+}