File size: 4,488 Bytes
b3f0c1a c2b0fe1 b3f0c1a c2b0fe1 b3f0c1a c2b0fe1 b3f0c1a 4319071 b3f0c1a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | import { useEffect, useRef, useCallback } from 'react';
import * as d3 from 'd3';
import { useFontMapStore } from '../../../store/fontMapStore';
const INITIAL_SCALE = 0.8;
// Min scale = reset scale — user can't zoom out past the initial framing.
const SCALE_EXTENT = [INITIAL_SCALE, 10.0];
const TRANSITION_DURATION = 750;
/**
* Hook de zoom basé sur DebugUMAP.
* Fonctionne avec un SVG viewBox → antialiasing natif.
*
* Le handler sélectionne .viewport-group dynamiquement pour rester
* compatible avec useMapRenderer qui peut le recréer.
*/
export function useMapZoom(svgRef, enabled = true) {
const zoomRef = useRef(null);
useEffect(() => {
if (!enabled || !svgRef.current) return;
const svg = d3.select(svgRef.current);
// Le viewport-group doit exister (créé par useMapRenderer)
if (svg.select('.viewport-group').empty()) return;
// Nettoyer un éventuel zoom précédent
svg.on('.zoom', null);
// Compute viewport size so we can cap pan to the canvas bounds.
const svgRect = svg.node().getBoundingClientRect();
const cx = svgRect.width / 2;
const cy = svgRect.height / 2;
const zoom = d3.zoom()
.scaleExtent(SCALE_EXTENT)
.translateExtent([[0, 0], [svgRect.width, svgRect.height]])
.on('zoom', (event) => {
svg.select('.viewport-group').attr('transform', event.transform);
svg.select('.highlight-group').attr('transform', event.transform);
svg.select('.centroids-group').attr('transform', event.transform);
if (window.updateTooltipTransform) window.updateTooltipTransform(event.transform);
if (window.updateTooltipPositions) window.updateTooltipPositions();
});
svg.call(zoom);
const initialTransform = d3.zoomIdentity
.translate(cx * (1 - INITIAL_SCALE), cy * (1 - INITIAL_SCALE))
.scale(INITIAL_SCALE);
svg.call(zoom.transform, initialTransform);
zoomRef.current = zoom;
// Fonctions globales pour ZoomControls
window.zoomIn = () => svg.transition().duration(200).call(zoom.scaleBy, 1.5);
window.zoomOut = () => svg.transition().duration(200).call(zoom.scaleBy, 1 / 1.5);
window.resetZoom = () => {
const rect = svg.node().getBoundingClientRect();
const rcx = rect.width / 2;
const rcy = rect.height / 2;
const t = d3.zoomIdentity
.translate(rcx * (1 - INITIAL_SCALE), rcy * (1 - INITIAL_SCALE))
.scale(INITIAL_SCALE);
const store = useFontMapStore.getState();
store.setIsTransitioning(true);
store.setHoveredFont(null);
svg.transition().duration(TRANSITION_DURATION).call(zoom.transform, t)
.on('end', () => {
useFontMapStore.getState().setIsTransitioning(false);
});
};
const svgNode = svgRef.current;
return () => {
if (svgNode) d3.select(svgNode).on('.zoom', null);
delete window.zoomIn;
delete window.zoomOut;
delete window.resetZoom;
zoomRef.current = null;
};
}, [enabled, svgRef]);
const centerOnFont = useCallback((font) => {
if (!font || !zoomRef.current || !svgRef.current) return;
const svg = d3.select(svgRef.current);
const glyphGroup = svg.select(`g.glyph-group[data-font-id="${font.id}"]`);
if (glyphGroup.empty()) return;
const transformAttr = glyphGroup.attr('data-original-transform');
if (!transformAttr) return;
const match = transformAttr.match(/translate\(([^,]+),\s*([^)]+)\)/);
if (!match) return;
const fontX = parseFloat(match[1]);
const fontY = parseFloat(match[2]);
const svgNode = svgRef.current;
const width = svgNode.clientWidth || svgNode.getBoundingClientRect().width;
const height = svgNode.clientHeight || svgNode.getBoundingClientRect().height;
const scale = 4.0;
const translateX = width / 2 - fontX * scale;
const translateY = height / 2 - fontY * scale;
const transform = d3.zoomIdentity
.translate(translateX, translateY)
.scale(scale);
const store = useFontMapStore.getState();
store.setIsTransitioning(true);
store.setHoveredFont(null);
svg.transition()
.duration(800)
.ease(d3.easeCubicInOut)
.call(zoomRef.current.transform, transform)
.on('end', () => {
useFontMapStore.getState().setIsTransitioning(false);
});
}, [svgRef]);
const resetZoom = useCallback(() => {
if (window.resetZoom) window.resetZoom();
}, []);
return { centerOnFont, resetZoom };
}
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