@nova-ui/charts
Version:
Nova Charts is a library created to provide potential consumers with solutions for various data visualizations that conform with the Nova Design Language. It's designed to solve common patterns identified by UX designers, but also be very flexible so that
158 lines • 25.5 kB
JavaScript
// © 2022 SolarWinds Worldwide, LLC. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import { arc } from "d3-shape";
import cloneDeep from "lodash/cloneDeep";
import defaultsDeep from "lodash/defaultsDeep";
import isUndefined from "lodash/isUndefined";
import { Subject } from "rxjs";
import { takeUntil } from "rxjs/operators";
import { GAUGE_LABELS_CONTAINER_CLASS, GAUGE_LABEL_FORMATTER_NAME_DEFAULT, GAUGE_THRESHOLD_LABEL_CLASS, } from "./constants";
import { DATA_POINT_NOT_FOUND, INTERACTION_DATA_POINTS_EVENT, STANDARD_RENDER_LAYERS, } from "../../../constants";
import { DonutGaugeRenderingUtil } from "../../../renderers/radial/gauge/donut-gauge-rendering-util";
import { DonutGaugeThresholdsRenderer } from "../../../renderers/radial/gauge/donut-gauge-thresholds-renderer";
import { RenderLayerName } from "../../../renderers/types";
import { ChartPlugin } from "../../common/chart-plugin";
/**
* A chart plugin that handles the rendering of labels for a donut gauge
*/
export class DonutGaugeLabelsPlugin extends ChartPlugin {
config;
static MARGIN_DEFAULT = 25;
/** The default plugin configuration */
DEFAULT_CONFIG = {
padding: 5,
formatterName: GAUGE_LABEL_FORMATTER_NAME_DEFAULT,
disableThresholdLabels: false,
};
destroy$ = new Subject();
lasagnaLayer;
constructor(config = {}) {
super();
this.config = config;
this.config = defaultsDeep(this.config, this.DEFAULT_CONFIG);
}
initialize() {
this.lasagnaLayer = this.chart.getGrid().getLasagna().addLayer({
name: GAUGE_LABELS_CONTAINER_CLASS,
order: STANDARD_RENDER_LAYERS[RenderLayerName.data].order,
clipped: false,
});
this.chart
.getEventBus()
.getStream(INTERACTION_DATA_POINTS_EVENT)
.pipe(takeUntil(this.destroy$))
.subscribe((event) => {
const gaugeThresholdLabelsGroup = this.lasagnaLayer.select(`.${GAUGE_LABELS_CONTAINER_CLASS}`);
if (!gaugeThresholdLabelsGroup.empty()) {
const dataPoints = event.data.dataPoints;
const labelOpacity = Object.keys(dataPoints).find((key, index) => dataPoints[key].index === DATA_POINT_NOT_FOUND)
? 0
: 1;
gaugeThresholdLabelsGroup.style("opacity", labelOpacity);
}
});
}
update() {
this.drawThresholdLabels();
}
updateDimensions() {
this.drawThresholdLabels();
}
destroy() {
if (this.destroy$) {
this.destroy$.next();
this.destroy$.complete();
}
}
drawThresholdLabels() {
const thresholdsSeries = this.chart
.getDataManager()
.chartSeriesSet.find((series) => series.renderer instanceof DonutGaugeThresholdsRenderer);
if (isUndefined(thresholdsSeries)) {
console.warn("Threshold series is undefined. As a result, threshold labels for the donut gauge will not be rendered.");
return;
}
let gaugeThresholdsLabelsGroup = this.lasagnaLayer.select(`.${GAUGE_LABELS_CONTAINER_CLASS}`);
if (gaugeThresholdsLabelsGroup.empty()) {
gaugeThresholdsLabelsGroup = this.lasagnaLayer
.append("svg:g")
.attr("class", GAUGE_LABELS_CONTAINER_CLASS)
.style("opacity", 0);
}
const renderer = thresholdsSeries?.renderer;
const labelRadius = renderer?.getOuterRadius(thresholdsSeries?.scales.r.range() ?? [0, 0], 0) + this.config.padding;
if (isUndefined(labelRadius)) {
throw new Error("Radius is undefined");
}
const labelGenerator = arc()
.outerRadius(labelRadius)
.innerRadius(labelRadius);
const formatter = thresholdsSeries?.scales.r.formatters[this.config.formatterName] ?? ((d) => d);
const data = cloneDeep(this.config.disableThresholdLabels ? [] : thresholdsSeries?.data);
if (isUndefined(data)) {
throw new Error("Gauge threshold series data is undefined");
}
// ensure the data is sorted in ascending order by value since we're using it to calculate circle arcs
data.sort((a, b) => a.value - b.value);
const labelSelection = gaugeThresholdsLabelsGroup
.selectAll(`text.${GAUGE_THRESHOLD_LABEL_CLASS}`)
.data(DonutGaugeRenderingUtil.generateThresholdArcData(data));
labelSelection.exit().remove();
labelSelection
.enter()
.append("text")
.attr("class", GAUGE_THRESHOLD_LABEL_CLASS)
.merge(labelSelection)
.attr("transform", (d) => `translate(${labelGenerator.centroid(d)})`)
.attr("title", (d, i) => formatter(data[i].value))
.style("text-anchor", (d) => this.getTextAnchor(d.startAngle))
.style("dominant-baseline", (d) => this.getAlignmentBaseline(d.startAngle))
.text((d, i) => formatter(data[i].value));
}
getTextAnchor(angle) {
// pie charts start on the top, so we need to subtract Math.PI / 2 (90 degrees)
const cosine = Math.cos(angle - Math.PI / 2);
if (cosine > 0.5) {
// used for right 120 degrees of chart
return "start";
}
if (cosine < -0.5) {
// used for left 120 degrees of chart
return "end";
}
// used for top 60 degrees and bottom 60 degrees of chart
return "middle";
}
getAlignmentBaseline(angle) {
// pie charts start on the top, so we need to add Math.PI / 2 (90 degrees)
const sine = Math.sin(angle + Math.PI / 2);
if (sine > 0.5) {
// used for top 120 degrees of chart
return "text-after-edge";
}
if (sine < -0.5) {
// used for bottom 120 degrees of chart
return "text-before-edge";
}
// used for left 60 degrees and right 60 degrees of chart
return "central";
}
}
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© 2022 SolarWinds Worldwide, LLC. All rights reserved.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n//  of this software and associated documentation files (the \"Software\"), to\n//  deal in the Software without restriction, including without limitation the\n//  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n//  sell copies of the Software, and to permit persons to whom the Software is\n//  furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n//  all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n//  THE SOFTWARE.\n\nimport { Arc, arc, DefaultArcObject } from \"d3-shape\";\nimport cloneDeep from \"lodash/cloneDeep\";\nimport defaultsDeep from \"lodash/defaultsDeep\";\nimport isUndefined from \"lodash/isUndefined\";\nimport { Subject } from \"rxjs\";\nimport { takeUntil } from \"rxjs/operators\";\n\nimport {\n    GAUGE_LABELS_CONTAINER_CLASS,\n    GAUGE_LABEL_FORMATTER_NAME_DEFAULT,\n    GAUGE_THRESHOLD_LABEL_CLASS,\n} from \"./constants\";\nimport { IGaugeLabelsPluginConfig } from \"./types\";\nimport {\n    DATA_POINT_NOT_FOUND,\n    INTERACTION_DATA_POINTS_EVENT,\n    STANDARD_RENDER_LAYERS,\n} from \"../../../constants\";\nimport { DonutGaugeRenderingUtil } from \"../../../renderers/radial/gauge/donut-gauge-rendering-util\";\nimport { DonutGaugeThresholdsRenderer } from \"../../../renderers/radial/gauge/donut-gauge-thresholds-renderer\";\nimport { RenderLayerName } from \"../../../renderers/types\";\nimport { ChartPlugin } from \"../../common/chart-plugin\";\nimport {\n    D3Selection,\n    IAccessors,\n    IChartEvent,\n    IChartSeries,\n} from \"../../common/types\";\n\n/**\n * A chart plugin that handles the rendering of labels for a donut gauge\n */\nexport class DonutGaugeLabelsPlugin extends ChartPlugin {\n    public static readonly MARGIN_DEFAULT = 25;\n\n    /** The default plugin configuration */\n    public DEFAULT_CONFIG: IGaugeLabelsPluginConfig = {\n        padding: 5,\n        formatterName: GAUGE_LABEL_FORMATTER_NAME_DEFAULT,\n        disableThresholdLabels: false,\n    };\n\n    private readonly destroy$ = new Subject<void>();\n    private lasagnaLayer: D3Selection<SVGElement>;\n\n    constructor(public config: IGaugeLabelsPluginConfig = {}) {\n        super();\n        this.config = defaultsDeep(this.config, this.DEFAULT_CONFIG);\n    }\n\n    public initialize(): void {\n        this.lasagnaLayer = this.chart.getGrid().getLasagna().addLayer({\n            name: GAUGE_LABELS_CONTAINER_CLASS,\n            order: STANDARD_RENDER_LAYERS[RenderLayerName.data].order,\n            clipped: false,\n        });\n\n        this.chart\n            .getEventBus()\n            .getStream(INTERACTION_DATA_POINTS_EVENT as string)\n            .pipe(takeUntil(this.destroy$))\n            .subscribe((event: IChartEvent) => {\n                const gaugeThresholdLabelsGroup = this.lasagnaLayer.select(\n                    `.${GAUGE_LABELS_CONTAINER_CLASS}`\n                );\n                if (!gaugeThresholdLabelsGroup.empty()) {\n                    const dataPoints = event.data.dataPoints;\n                    const labelOpacity = Object.keys(dataPoints).find(\n                        (key, index) =>\n                            dataPoints[key].index === DATA_POINT_NOT_FOUND\n                    )\n                        ? 0\n                        : 1;\n                    gaugeThresholdLabelsGroup.style(\"opacity\", labelOpacity);\n                }\n            });\n    }\n\n    public update(): void {\n        this.drawThresholdLabels();\n    }\n\n    public updateDimensions(): void {\n        this.drawThresholdLabels();\n    }\n\n    public destroy(): void {\n        if (this.destroy$) {\n            this.destroy$.next();\n            this.destroy$.complete();\n        }\n    }\n\n    private drawThresholdLabels() {\n        const thresholdsSeries = this.chart\n            .getDataManager()\n            .chartSeriesSet.find(\n                (series: IChartSeries<IAccessors<any>>) =>\n                    series.renderer instanceof DonutGaugeThresholdsRenderer\n            );\n\n        if (isUndefined(thresholdsSeries)) {\n            console.warn(\n                \"Threshold series is undefined. As a result, threshold labels for the donut gauge will not be rendered.\"\n            );\n            return;\n        }\n\n        let gaugeThresholdsLabelsGroup = this.lasagnaLayer.select(\n            `.${GAUGE_LABELS_CONTAINER_CLASS}`\n        );\n        if (gaugeThresholdsLabelsGroup.empty()) {\n            gaugeThresholdsLabelsGroup = this.lasagnaLayer\n                .append(\"svg:g\")\n                .attr(\"class\", GAUGE_LABELS_CONTAINER_CLASS)\n                .style(\"opacity\", 0);\n        }\n\n        const renderer =\n            thresholdsSeries?.renderer as DonutGaugeThresholdsRenderer;\n        const labelRadius =\n            renderer?.getOuterRadius(\n                thresholdsSeries?.scales.r.range() ?? [0, 0],\n                0\n            ) + (this.config.padding as number);\n        if (isUndefined(labelRadius)) {\n            throw new Error(\"Radius is undefined\");\n        }\n\n        const labelGenerator: Arc<any, DefaultArcObject> = arc()\n            .outerRadius(labelRadius)\n            .innerRadius(labelRadius);\n\n        const formatter =\n            thresholdsSeries?.scales.r.formatters[\n                this.config.formatterName as string\n            ] ?? ((d) => d);\n\n        const data = cloneDeep(\n            this.config.disableThresholdLabels ? [] : thresholdsSeries?.data\n        );\n        if (isUndefined(data)) {\n            throw new Error(\"Gauge threshold series data is undefined\");\n        }\n\n        // ensure the data is sorted in ascending order by value since we're using it to calculate circle arcs\n        data.sort((a, b) => a.value - b.value);\n\n        const labelSelection = gaugeThresholdsLabelsGroup\n            .selectAll(`text.${GAUGE_THRESHOLD_LABEL_CLASS}`)\n            .data(DonutGaugeRenderingUtil.generateThresholdArcData(data));\n        labelSelection.exit().remove();\n        labelSelection\n            .enter()\n            .append(\"text\")\n            .attr(\"class\", GAUGE_THRESHOLD_LABEL_CLASS)\n            .merge(labelSelection as any)\n            .attr(\n                \"transform\",\n                (d) => `translate(${labelGenerator.centroid(d)})`\n            )\n            .attr(\"title\", (d, i) => formatter(data[i].value))\n            .style(\"text-anchor\", (d) => this.getTextAnchor(d.startAngle))\n            .style(\"dominant-baseline\", (d) =>\n                this.getAlignmentBaseline(d.startAngle)\n            )\n            .text((d, i) => formatter(data[i].value));\n    }\n\n    private getTextAnchor(angle: any): string {\n        // pie charts start on the top, so we need to subtract Math.PI / 2 (90 degrees)\n        const cosine = Math.cos(angle - Math.PI / 2);\n        if (cosine > 0.5) {\n            // used for right 120 degrees of chart\n            return \"start\";\n        }\n\n        if (cosine < -0.5) {\n            // used for left 120 degrees of chart\n            return \"end\";\n        }\n\n        // used for top 60 degrees and bottom 60 degrees of chart\n        return \"middle\";\n    }\n\n    private getAlignmentBaseline(angle: any): string {\n        // pie charts start on the top, so we need to add Math.PI / 2 (90 degrees)\n        const sine = Math.sin(angle + Math.PI / 2);\n        if (sine > 0.5) {\n            // used for top 120 degrees of chart\n            return \"text-after-edge\";\n        }\n\n        if (sine < -0.5) {\n            // used for bottom 120 degrees of chart\n            return \"text-before-edge\";\n        }\n\n        // used for left 60 degrees and right 60 degrees of chart\n        return \"central\";\n    }\n}\n"]}