mirror of
https://github.com/apache/superset.git
synced 2026-07-27 00:52:33 +00:00
122 lines
3.4 KiB
TypeScript
122 lines
3.4 KiB
TypeScript
/**
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
|
* or more contributor license agreements. See the NOTICE file
|
|
* distributed with this work for additional information
|
|
* regarding copyright ownership. The ASF licenses this file
|
|
* to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance
|
|
* with the License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing,
|
|
* software distributed under the License is distributed on an
|
|
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
* KIND, either express or implied. See the License for the
|
|
* specific language governing permissions and limitations
|
|
* under the License.
|
|
*/
|
|
import { useCallback, useEffect, useRef } from 'react';
|
|
import { useMap as useMapLibre } from 'react-map-gl/maplibre';
|
|
import { useMap as useMapbox } from 'react-map-gl/mapbox';
|
|
|
|
export interface RedrawParams {
|
|
width: number;
|
|
height: number;
|
|
ctx: CanvasRenderingContext2D;
|
|
isDragging: boolean;
|
|
project: (lngLat: [number, number]) => [number, number];
|
|
}
|
|
|
|
interface CanvasOverlayProps {
|
|
redraw: (params: RedrawParams) => void;
|
|
}
|
|
|
|
export default function CanvasOverlay({ redraw }: CanvasOverlayProps) {
|
|
const mapLibreContext = useMapLibre();
|
|
const mapboxContext = useMapbox();
|
|
const mapRef = (mapLibreContext.current ?? mapboxContext.current) as any;
|
|
const canvasRef = useRef<HTMLCanvasElement>(null);
|
|
const isDraggingRef = useRef(false);
|
|
|
|
const project = useCallback(
|
|
(lngLat: [number, number]): [number, number] => {
|
|
if (!mapRef) return [0, 0];
|
|
const map = mapRef.getMap();
|
|
const point = map.project(lngLat);
|
|
return [point.x, point.y];
|
|
},
|
|
[mapRef],
|
|
);
|
|
|
|
const performRedraw = useCallback(() => {
|
|
const canvas = canvasRef.current;
|
|
const map = mapRef?.getMap();
|
|
if (!canvas || !map) return;
|
|
|
|
const container = map.getContainer();
|
|
const dpr = window.devicePixelRatio || 1;
|
|
const width = container.clientWidth;
|
|
const height = container.clientHeight;
|
|
|
|
canvas.width = width * dpr;
|
|
canvas.height = height * dpr;
|
|
canvas.style.width = `${width}px`;
|
|
canvas.style.height = `${height}px`;
|
|
|
|
const ctx = canvas.getContext('2d');
|
|
if (!ctx) return;
|
|
|
|
ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
|
|
|
|
redraw({
|
|
width,
|
|
height,
|
|
ctx,
|
|
isDragging: isDraggingRef.current,
|
|
project,
|
|
});
|
|
}, [mapRef, redraw, project]);
|
|
|
|
useEffect(() => {
|
|
const map = mapRef?.getMap();
|
|
if (!map) return undefined;
|
|
|
|
const onMove = () => performRedraw();
|
|
const onDragStart = () => {
|
|
isDraggingRef.current = true;
|
|
};
|
|
const onDragEnd = () => {
|
|
isDraggingRef.current = false;
|
|
performRedraw();
|
|
};
|
|
const onResize = () => performRedraw();
|
|
|
|
map.on('move', onMove);
|
|
map.on('dragstart', onDragStart);
|
|
map.on('dragend', onDragEnd);
|
|
map.on('resize', onResize);
|
|
|
|
performRedraw();
|
|
|
|
return () => {
|
|
map.off('move', onMove);
|
|
map.off('dragstart', onDragStart);
|
|
map.off('dragend', onDragEnd);
|
|
map.off('resize', onResize);
|
|
};
|
|
}, [mapRef, performRedraw]);
|
|
|
|
return (
|
|
<canvas
|
|
ref={canvasRef}
|
|
style={{
|
|
position: 'absolute',
|
|
top: 0,
|
|
left: 0,
|
|
pointerEvents: 'none',
|
|
}}
|
|
/>
|
|
);
|
|
}
|