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[reactjs] zoom level state issue

See original GitHub issue

I want to programatically close zoom ability

I have a variable const [zoomLevel, setZoomLevel] = useState(0);

Use it like this

const zoomOptions = useMemo(() => ({
    pan: {
        enabled: true,
        mode: 'xy',
        modifierKey: 'alt'
    },
    zoom: {
        mode: 'xy',
        drag: {
            enabled: true,
            borderColor: 'rgb(54, 162, 235)',
            borderWidth: 1,
            backgroundColor: 'rgba(54, 162, 235, 0.3)'
        },
        onZoom: ({}) => {
            console.log("ZOOM LEVEL", zoomLevel)
            setZoomLevel(prevState => prevState + 1);
        },
        onZoomStart: ({}) => {
            console.log("ZOOM START", zoomLevel)
            if (zoomLevel >= 8) {
                console.log("FORBID!")
                return false;
            }
        }
    }
}), [zoomLevel]);

And zoom stops working almost immediately. What am I doing wrong?

Issue Analytics

State:
Created a year ago
Comments:6 (3 by maintainers)

Top GitHub Comments

1reaction

LeeLenaleeecommented, Oct 31, 2022

If im correct you get the chart object in your onZoom callback, here you can call chart.scales[scaleId].min and chart.scales[scaleId].max if im correct (cant test atm but verry sure this should work)

0reactions

tejaswikarasani2001commented, Oct 31, 2022

If im correct you get the chart object in your onZoom callback, here you can call chart.scales[scaleId].min and chart.scales[scaleId].max if im correct (cant test atm but verry sure this should work)

It worked thank you : )