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put/read current location in/from url fragment (fix #6)

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Tomáš Mládek 2021-01-17 16:34:49 +01:00
parent 2dc16e7362
commit b66c5113a1
1 changed files with 19 additions and 3 deletions
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22
app/src/components/SVGContent.vue
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@ -152,6 +152,9 @@ export default defineComponent({
bbox.w = window.innerWidth / currentRatio;
bbox.h = window.innerHeight / currentRatio;
bbox.z = transform.scale;
window.location.hash =
`${Math.round(bbox.x + bbox.w / 2)},${Math.round(bbox.y + bbox.h / 2)},${Math.round(transform.scale * 1000) / 1000}z`;
});
function panToElement(target: SVGRectElement, smooth: boolean) {
@ -196,10 +199,23 @@ export default defineComponent({
panToElement(anchor, true);
};
// Pan to start element
// Process start element
const start = processStart(svg);
if (start) {
// Pan to start element or location in hash
const locationMatch = window.location.href.match(/#([\-0-9.]+),([\-0-9.]+),([0-9.]+)z/);
if (locationMatch) {
console.debug(`[SVGCONTENT] Got a location match: ${locationMatch}`);
const [_, x, y, z] = locationMatch;
const transform = pz.getTransform();
const currentRatio = svg.clientWidth * transform.scale / svg.viewBox.baseVal.width;
pz.moveTo(
(parseFloat(x) * currentRatio * -1 + window.innerWidth / 2),
(parseFloat(y) * currentRatio * -1 + window.innerHeight / 2)
);
pz.zoomAbs(window.innerWidth / 2, window.innerHeight / 2, parseFloat(z));
} else if (start) {
console.info("[SVG] Found start element.");
panToElement(start, false);