Using Theme Manager in JavaScript Chart

1import {
2    EAnimationType,
3    ECoordinateMode,
4    EHorizontalAnchorPoint,
5    FastLineRenderableSeries,
6    IThemeProvider,
7    NumberRange,
8    NumericAxis,
9    SciChartJSDarkv2Theme,
10    SciChartJSLightTheme,
11    SciChartJsNavyTheme,
12    SciChartSurface,
13    TextAnnotation,
14    XyDataSeries,
15} from "scichart";
16import { ExampleDataProvider } from "../../../ExampleData/ExampleDataProvider";
17
18export const getChartsInitializationAPI = () => {
19    const createLineData = (whichSeries: number) => {
20        const data = ExampleDataProvider.getFourierSeriesZoomed(1.0, 0.1, 5.0, 5.15);
21
22        return {
23            xValues: data.xValues,
24            yValues: data.yValues.map((y) => (whichSeries === 0 ? y : whichSeries === 1 ? y * 1.1 : y * 1.5)),
25        };
26    };
27
28    const createThemedChart = async (rootElement: string | HTMLDivElement, title: string, theme: IThemeProvider) => {
29        // Create a SciChartSurface passing theme into constructor options
30        const { sciChartSurface, wasmContext } = await SciChartSurface.create(rootElement, {
31            theme,
32        });
33
34        // Create the X,Y Axis
35        sciChartSurface.xAxes.add(
36            new NumericAxis(wasmContext, {
37                labelPrecision: 2,
38                maxAutoTicks: 8,
39            })
40        );
41        sciChartSurface.yAxes.add(
42            new NumericAxis(wasmContext, {
43                labelPrecision: 2,
44                maxAutoTicks: 8,
45                growBy: new NumberRange(0.05, 0.2),
46            })
47        );
48
49        // Add title annotation
50        sciChartSurface.annotations.add(
51            new TextAnnotation({
52                text: title,
53                fontSize: 16,
54                textColor: theme.tickTextBrush,
55                x1: 0.5,
56                y1: 0,
57                opacity: 0.77,
58                horizontalAnchorPoint: EHorizontalAnchorPoint.Center,
59                xCoordinateMode: ECoordinateMode.Relative,
60                yCoordinateMode: ECoordinateMode.Relative,
61            })
62        );
63
64        let data = createLineData(2);
65
66        // Create and add a line series to the chart
67        sciChartSurface.renderableSeries.add(
68            new FastLineRenderableSeries(wasmContext, {
69                dataSeries: new XyDataSeries(wasmContext, { xValues: data.xValues, yValues: data.yValues }),
70                stroke: "auto",
71                strokeThickness: 3,
72                animation: {
73                    type: EAnimationType.Sweep,
74                    options: { duration: 500 },
75                },
76            })
77        );
78
79        data = createLineData(1);
80
81        // Create and add a line series to the chart
82        sciChartSurface.renderableSeries.add(
83            new FastLineRenderableSeries(wasmContext, {
84                dataSeries: new XyDataSeries(wasmContext, { xValues: data.xValues, yValues: data.yValues }),
85                stroke: "auto",
86                strokeThickness: 3,
87                animation: {
88                    type: EAnimationType.Sweep,
89                    options: { duration: 500 },
90                },
91            })
92        );
93
94        data = createLineData(0);
95
96        // Create and add a line series to the chart
97        sciChartSurface.renderableSeries.add(
98            new FastLineRenderableSeries(wasmContext, {
99                dataSeries: new XyDataSeries(wasmContext, { xValues: data.xValues, yValues: data.yValues }),
100                stroke: "auto",
101                strokeThickness: 3,
102                animation: {
103                    type: EAnimationType.Sweep,
104                    options: { duration: 500 },
105                },
106            })
107        );
108
109        return { sciChartSurface };
110    };
111
112    const createNavyThemeChart = (divId: string | HTMLDivElement) =>
113        createThemedChart(divId, "Navy Theme", new SciChartJsNavyTheme());
114    const createLightThemeChart = (divId: string | HTMLDivElement) =>
115        createThemedChart(divId, "Light Theme", new SciChartJSLightTheme());
116    const createDarkThemeChart = (divId: string | HTMLDivElement) =>
117        createThemedChart(divId, "Dark Theme", new SciChartJSDarkv2Theme());
118    const createCustomThemeChart = (divId: string | HTMLDivElement) =>
119        createThemedChart(divId, "Custom Theme", customTheme);
120
121    return { createNavyThemeChart, createLightThemeChart, createDarkThemeChart, createCustomThemeChart };
122};
123
124// Create a custom theme based on light theme + some modifications
125const customTheme: IThemeProvider = {
126    ...new SciChartJSLightTheme(),
127    axisBandsFill: "#83D2F511",
128    axisBorder: "#1F3D68",
129    gridBackgroundBrush: "white",
130    gridBorderBrush: "white",
131    loadingAnimationForeground: "#6495ED77",
132    loadingAnimationBackground: "#E4F5FC",
133    majorGridLineBrush: "#264B9322",
134    minorGridLineBrush: "#264B9306",
135    sciChartBackground: "#E4F5FC",
136    tickTextBrush: "#1F3D68",
137    axisTitleColor: "#1F3D68",
138    // auto / default colour palette for lines and fills
139    strokePalette: ["#264B93", "#A16DAE", "#C52E60"],
140    fillPalette: ["#264B9333", "#A16DAE33", "#C52E6033"],
141};
142