flame-chart-js

Installation

npm i @lgcxc/flame-chart-js

Demo

https://lgcxc.github.io/flame-chart-js

Roadmap

You can find some plans on the wiki

Usage

Initialization

You can ignore any of the marks, data, or waterfall arguments to initialize only the items you want. The flame chart will automatically adjust and hide unused plugins.

import { FlameChart } from '@lgcxc/flame-chart-js';

const canvas = document.getElementById('canvas');

canvas.width = 800;
canvas.height = 400;

const flameChart = new FlameChart({
    canvas, // mandatory
    data: [
        {
            name: 'foo',
            start: 300,
            duration: 200,
            type: 'task',
            children: [
                {
                    name: 'foo',
                    start: 310,
                    duration: 50,
                    type: 'sub-task',
                    color: '#AA0000',
                },
            ],
        },
    ],
    marks: [
        {
            shortName: 'DCL',
            fullName: 'DOMContentLoaded',
            timestamp: 500,
        },
    ],
    waterfall: {
        /* ... */
    },
    timeseries: [/* ... */],
    timeframeTimeseries: [/* ... */],
    colors: {
        task: '#FFFFFF',
        'sub-task': '#000000',
    },
    settings: {
        hotkeys: {
          active: true,  // enable navigation using arrow keys
          scrollSpeed: 0.5, // scroll speed (ArrowLeft, ArrowRight)
          zoomSpeed: 0.001, // zoom speed (ArrowUp, ArrowDown, -, +)
          fastMultiplayer: 5, // speed multiplier when zooming and scrolling (activated by Shift key)
        },
        options: {
            tooltip: () => {
                /*...*/
            }, // see section "Custom Tooltip" below
            timeUnits: 'ms',
        },
        styles: customStyles, // see section "Styles" below
    },
});

flameChart.on('select', (node, type) => {
    /*...*/
});

Public methods

class FlameChart {
    // set zoom, which start argument is a left bound and end argument is a right bound
    setZoom = (start: number, end: number) => boolean

    // set only position of the flame-chart
    setFlameChartPosition = ({ x: number, y: number }) => void 0

    // render all when animationFrame fired
    render = () => void 0

    // set new data for the flame-chart
    setNodes = (nodes: FlameChartNodes) => void 0

    // set marks for marks plugin
    setMarks = (data: Marks) => void 0

    // set chart data for timeseries plugin
    setTimeseries = (data: Timeseries) => void 0

    // resize canvas
    resize = (width: number, height: number) => void 0

    // apply new settings, which includes styles or something else
    setSettings = (settings: Object) => void 0

    // enable/disable navigation using arrow keys
    hotkeys = (status: boolean) => void 0
}

Usage with plugins

import { FlameChartContainer, TimeGridPlugin, MarksPlugin, FlameChartPlugin } from '@lgcxc/flame-chart-js';

const canvas = document.getElementById('canvas');

canvas.width = 800;
canvas.height = 400;

const flameChart = new FlameChartContainer({
    canvas, // mandatory
    plugins: [
        new TimeGridPlugin({ styles: timeGridPluginStyles }),
        new MarksPlugin({ data: marks }),
        new FlameChartPlugin({ data: flameChartData1, colors: flameChartColors, name: 'flameChart1' }),
        new FlameChartPlugin({ data: flameChartData2, colors: flameChartColors, name: 'flameChart2' }),
    ],
});

Usage with React

Default flame chart:

import { FlameChartComponent } from '@lgcxc/flame-chart-js/react';

export const DefaultFlameChart = ({
    flameChartData,
    stylesSettings,
    onSelect,
}) => {
    const settings = useMemo(
        () => ({
            styles: stylesSettings,
        }),
        [stylesSettings],
    );

    return (
        <FlameChartComponent
            data={flameChartData}
            settings={settings}
            onSelect={onSelect}
            className={styles.flameChart}
        />
    );
};

Custom flame chart:

import { FlameChartContainerComponent } from '@lgcxc/flame-chart-js/react';

const CustomFlameChart = ({ flameChartData, stylesSettings }) => {
  const plugins = useMemo(() => {
    return [
      new TimeGridPlugin(),
      new TogglePlugin('FlameChart 1'),
      new FlameChartPlugin({
        name: 'flameChart1',
        data: flameChartData[0],
      }),
      new TogglePlugin('FlameChart 2'),
      new FlameChartPlugin({
        name: 'flameChart2',
        data: flameChartData[1],
      }),
    ];
  }, [flameChartData]);

  const settings = useMemo(
    () => ({
      styles: stylesSettings,
    }),
    [stylesSettings],
  );

  return <FlameChartContainerComponent settings={settings} plugins={plugins} className={styles.flameChart} />;
};

Settings

Patterns

For each span, it is possible to set their display style. To do this, you need to define these styles using pattern settings.

const flameChart = new FlameChart({
    settings: {
        patterns: [
            {
                name: 'your-pattern-name',
                pattern: 'stripes',
                config: { /* ... */ }
            }
        ]
    }
});

Next, you need to specify the name of the created pattern in one of the nodes in data.

const node = {
    name: 'your-node-name',
    start: 0,
    duration: 100,
    type: 'your-node-type',
    pattern: 'your-pattern-name',
}

or in waterfall interval

const interval = {
    name: 'your-interval-name',
    type: 'block',
    start: 'your-start-timing-name',
    end: 'your-end-timing-name',
    pattern: 'your-pattern-name',
}

Default patterns

Stripes

type StripesPattern = {
    type: 'stripes',
    name: string, // your pattern name
    config: {
        color?: string, // color of the stripes
        background?: string, // background color
        lineWidth?: number, // width of the stripes
        spacing?: number, // spacing between stripes
        angle?: number, // angle of the stripes (for example: 90 - vertical, 45 - diagonal, 180 - horizontal)
        dash: number[], // dash of the stripes (for example: [10, 5] - 10px line, 5px space)
    }    
}

Dots

type DotsPattern = {
    type: 'dots',
    name: string, // your pattern name
    config: {
        color?: string; // color of the dots
        background?: string; // background color
        size?: number; // diameter of the dots
        rows?: number; // number of rows
        align?: 'center' | 'top' | 'bottom'; // align of the dots
        spacing?: number; // spacing between dots
        verticalSpicing?: number; // vertical spacing between rows (default = spacing)
        horizontalSpicing?: number; // horizontal spacing between dots (default = spacing)
    }
}

Gradient

type GradientPattern = {
    type: 'gradient',
    name: string, // your pattern name
    config: {
        colors: {
            offset: number; // offset of the color (from 0 to 1) 
            color: string // color of the gradient point
        }[]
    }
}

Triangles

type TrianglesPattern = {
    type: 'triangles',
    name: string, // your pattern name
    config: {
        color?: string; // color of the triangles
        background?: string; // background color
        width?: number; // width of the triangles
        height?: number; // height of the triangles
        align?: 'center' | 'top' | 'bottom'; // align of the triangles
        // direction of the triangles (the direction where the vertex of the triangle will face)
        direction?: 'top' | 'bottom' | 'left' | 'right' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right';
        spacing?: number; // spacing between triangles
    }
}

Combined

A combined pattern will allow you to combine several patterns. For each pattern, you can use transparency using the color or background config option (color: 'rgba(75, 25, 10, 0.5)') and then you will get a beautiful layering of layers on top of each other.

type CombinedPattern = {
    type: 'combined',
    name: string, // your pattern name
    config: Array<StripesPattern | DotsPattern | GradientPattern | TrianglesPattern>
}

Custom

You can also create your own pattern.

import FlameChart from './flame-chart';

const flameChart = new FlameChart({
    settings: {
        patterns: [
            {
                name: 'your-pattern-name',
                creator: (engine) => {
                    const canvas = document.createElement('canvas')!;
                    const ctx = canvas.getContext('2d')!;
                    
                    // set canvas size
                    canvas.width = 20;
                    canvas.height = engine.blockHeight;
                    
                    // draw something on canvas
                    ctx.fillStyle = 'red';
                    ctx.fillRect(0, 0, 10, 10);
                    
                    return {
                        pattern: engine.ctx.createPattern(canvas, 'repeat')!,
                    }
                } 
            }
        ]
    }
});

Styles

You can override whatever style you want. For example:

const flameChart = new FlameChart({
    settings: {
        styles: {
            'main': {
                'blockHeight': 20
            }
        }
    }
});

After applying this style, the blocks of the flame chart will be 20 pixels high instead of 16 pixels.

To learn more about styles, you can take a look at the example - all styles will be available in one of the dropdowns on the left side of the interface.

Custom Tooltip

You can override or prevent the tooltip render by defining this within the settings objet.

const flameChart = new FlameChart({
    settings: {
        options: {
            tooltip: undefined
        }
    }
});

For example:

// prevent tooltip render
chart.setSettings({ options: { tooltip: false } });

// override tooltip render
chart.setSettings({
    options: {
        tooltip: (data, renderEngine, mouse) => undefined,
    },
});

Data types

type Mark = {
    shortName: string;
    fullName: string;
    timestamp: number;
    color: string;
};

type Marks = Array<Mark>;

type Node = {
    name: string; // node name
    start: number; // node start time
    duration: number; // node duration
    type?: string; // node type (use it for custom colorization)
    color?: string; // node color (use it for current node colorization)
    pattern?: string; // node pattern (use it for customize node view - see section Patterns)
    badge?: string; // node badge color (if present, the badge will be displayed in the upper left corner of the node)
    children?: Array<Node>; // node children (same structure as for node)
};

type Nodes = Array<Node>;

type WaterfallItems = Array<{
    name: string;
    intervals: string | WaterfallInterval; // if you use a string, then the intervals will be taken from the array of intervals
    timing: {
        [string: key]: number; // The timing name must match the start and end fields within the described intervals
    };
}>;

type WaterfallInterval = {
    name: string;
    color: string;
    pattern?: string; // interval pattern (use it for customize interval view - see section Patterns)
    type: 'block' | 'line';
    start: string; // timing name
    end: string; // timing name
    // if true, then the interval will be displayed on the timeframe chart, 
    // if color string, then the interval will be displayed on the timeframe chart with the specified color (same colors will be merged)
    timeframeChart: boolean | string;
};

type WaterfallIntervals = {
    [string: intervalName]: WaterfallInterval;
};

type Waterfall = {
    items: WaterfallItems;
    intervals: WaterfallIntervals;
};

type TimeseriesChart = {
  points: [number, number][]; // data points to render - the first element of the internal array is the timestamp and the second element is the value of the point
  group?: string; // group to calculate common minimum, maximum for multiple charts
  units?: string; // points to be used for grouping (if the group field is missing) and for rendering the tooltip (for example '%', 'mb', 'kb/s')
  name?: string; // the name will be used to display the tooltip
  style?: Partial<ChartStyle>;
  min?: number; // if absent, then min and max will be calculated from points
  max?: number; // same
  dynamicMinMax?: boolean; // dynamically calculate minimum and maximum based on current zoom level 
};

type Timeseries = TimeseriesChart[];

Updating

flameChart.setData(newData);
flameChart.setMarks(newMarks);
flameChart.setWaterfall(newWaterfall);
flameChart.setTimeseries(newTimeseries);

Scaling

window.addEventListener('resize', () => {
    flameChart.resize(window.innerWidth, window.innerHeight);
});

Plugins

You can create your own plugin

import { UIPlugin } from '@lgcxc/flame-chart-js';

class MyPlugin extends UIPlugin {
    constructor({ name = 'myOwnPlugin' }) {
        super(name);
    }

    height = 100; // height of the plugin in pixels

    // this method will be called on each render
    override render() {
        // do something
        this.renderEngine.addRect({ color: 'red', x: 10, y: 10, w: 20 });
    }
}

Local Development

npm i && npm start