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maintains zoom level and centers active pins #2219 #2236

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merged 1 commit into from
Oct 8, 2024
Merged

maintains zoom level and centers active pins #2219 #2236

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23 changes: 19 additions & 4 deletions client/src/hooks/useMapbox.js
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Open in desktop
Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
import { defaultViewport } from "helpers/Configuration";
import { useRef } from "react";
import { useMap } from "react-map-gl";
import { useListPanel } from "../appReducer";
Expand Down Expand Up @@ -28,12 +27,28 @@ export const useMapbox = () => {
if (!mapbox.default) {
return;
}

// gets the user's current zoom level
const currentZoom = mapbox.default.getZoom();

// calculates longitude offset according to zoom level for panel open desktop
const baseLongOffset = 0.08;
const longitudeOffset = baseLongOffset * Math.pow(2, 11 - currentZoom);

// calculates latitude offset for mobile according to zoom level and takes screen height into account
const baseLatOffset = 0.05;
const screenHeight = window.innerHeight;
const referenceHeight = 800;
const screenHeightFactor = screenHeight / referenceHeight;
const latitudeOffset =
baseLatOffset * Math.pow(2, 11 - currentZoom) * screenHeightFactor;

mapbox.default.flyTo({
center: [
isListPanelOpen && isDesktop ? longitude - 0.08 : longitude,
isMobile ? latitude - 0.04 : latitude,
isListPanelOpen && isDesktop ? longitude - longitudeOffset : longitude,
isMobile ? latitude - latitudeOffset : latitude,
],
zoom: defaultViewport.zoom,
zoom: currentZoom,
duration: 2000,
});
};
Expand Down