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Fix restoring zoom on page reload

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This commit is contained in:
Catalin Constantin Mititiuc 2025-06-16 22:41:31 -07:00
parent 2d29c6715c
commit 515323feaa
1 changed files with 13 additions and 13 deletions
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26
src/modules/pan-zoom.js
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@ -3,33 +3,33 @@ import { pan, zoom } from 'pan-zoom';
const storageKey = 'pan-zoom',
zoomFactor = 0.25;
function restorePanZoomVal(svg) {
function restorePanZoomVal(el) {
const storedPanZoomVal = localStorage.getItem(storageKey);
if (storedPanZoomVal) {
svg.style.transform = storedPanZoomVal;
el.style.transform = storedPanZoomVal;
}
}
function addEventListeners(svg) {
const targetEl = svg.querySelector('.gameboard');
svg.addEventListener('wheel', e => zoom(targetEl, e, zoomFactor), { passive: false });
svg.addEventListener('pointerdown', e => pan(svg, targetEl, e), { passive: false });
function addEventListeners(svg, el) {
svg.addEventListener('wheel', e => zoom(el, e, zoomFactor), { passive: false });
svg.addEventListener('pointerdown', e => pan(svg, el, e), { passive: false });
}
function storePanZoomVal(transformMatrix) {
localStorage.setItem(storageKey, transformMatrix);
}
function observePanZoomChanges(svg) {
const observer = new MutationObserver(() => storePanZoomVal(svg.style.transform));
function observePanZoomChanges(el) {
const observer = new MutationObserver(() => storePanZoomVal(el.style.transform));
observer.observe(svg, { attributeFilter: ['style'] });
observer.observe(el, { attributeFilter: ['style'] });
}
export function start(svg) {
restorePanZoomVal(svg);
addEventListeners(svg);
observePanZoomChanges(svg);
const targetEl = svg.querySelector('.gameboard');
restorePanZoomVal(targetEl);
addEventListeners(svg, targetEl);
observePanZoomChanges(targetEl);
}