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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset='utf-8'>
<title>Leader Line with Markdown</title>
<meta property="og:description" content="Add a default marker to the map." />
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel='stylesheet' href='https://unpkg.com/maplibre-gl@4.5.2/dist/maplibre-gl.css' />
<script src='https://unpkg.com/maplibre-gl@4.5.2/dist/maplibre-gl.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/leader-line/1.0.7/leader-line.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/marked/14.0.0/marked.min.js'></script>
<style>
body {
margin: 0;
padding: 0;
display: flex;
}
html,
body,
#map,
#markdown {
height: 100%;
}
#map,
#markdown {
flex: 50%;
}
pre {
display: none;
}
</style>
</head>
<body>
<div id="map"></div>
<div id="markdown"></div>
<pre id="markdown-raw"># Some Markdown rendered Content
[Place 1]
## Title 2
- item
- subitem
- subusb
Text before link [Place 2]
[Place 1]: geo:12.55,55.66
[Place 2]: geo:13,55.8
</pre>
<script>
const map = new maplibregl.Map({
container: 'map',
style:
'https://raw.githubusercontent.com/maplibre/demotiles/gh-pages/style.json',
center: [12.550343, 55.665957],
zoom: 8
});
document.getElementById('markdown').innerHTML = marked.parse(document.getElementById('markdown-raw').innerHTML);
const links = Array.from(document.querySelectorAll('#markdown a'))
links.forEach(link => {
let location = link.href.split('geo:')[1]
let lon = Number(location.split(',')[0])
let lat = Number(location.split(',')[1])
link.marker = new maplibregl.Marker()
.setLngLat([lon, lat])
.addTo(map)
.getElement()
link.line = new LeaderLine(
link,
// LeaderLine.mouseHoverAnchor(link),
// line.marker.getElement(),
LeaderLine.areaAnchor(link.marker, 'circle'),
{
middleLabel: LeaderLine.captionLabel('MIDDLE'),
offset: [-20, 0],
startSocket: 'auto',
}
)
link.line.hide()
link.visibility = false
link.addEventListener("click", (event) => {
link.visibility ? link.line.hide() : link.line.show()
// if (link.visibility) {
// link.line.hide()
// }
// else {
// link.line.show()
// }
link.visibility = !link.visibility
})
})
function isChildOutsideParent(childElement, parentElement) {
// 获取边界框信息
const childRect = childElement.getBoundingClientRect();
const parentRect = parentElement.getBoundingClientRect();
return (
childRect.left < parentRect.left ||
childRect.right > parentRect.right ||
childRect.top < parentRect.top ||
childRect.bottom > parentRect.bottom
);
}
map.on('move', () => {
links.forEach(link => {
if (isChildOutsideParent(link.marker, map.getCanvas())) {
link.line.hide()
return
} else {
if (link.visibility) link.line.show()
}
link.line.position()
})
})
</script>
</body>
</html>
|
