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tile-bounds.html
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<!DOCTYPE html>
<html>
<head>
<title>Leaflet debug page</title>
<link rel="stylesheet" href="../Leaflet/dist/leaflet.css" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script type="text/javascript" src="../Leaflet/dist/leaflet-src.js"></script>
<script type="text/javascript" src="L.TileLayer.NoGap.js"></script>
<style>
#map {
/* margin: 256px; */
/* width: auto; */
overflow: hidden;
width: 100vw;
height: calc( 100vh - 100px );
background: red;
}
/* canvas {
border: 1px dotted black;
margin-top: -1px;
margin-left:-1px;
}*/
div.tile-coords128 {
line-height: 128px;
text-align: center;
color: red;
font-size: 12.8px;
max-width: 128px;
}
div.tile-coords256 {
line-height: 256px;
text-align: center;
color: red;
font-size: 25.6px;
max-width: 256px;
}
body { margin: 0; }
/* .leaflet-map-pane canvas {
opacity: 0.2;
}*/
/* Make the zoom animation slower */
/*.leaflet-zoom-anim .leaflet-zoom-animated {
-webkit-transition: -webkit-transform 5s cubic-bezier(0,0,0.25,1);
-moz-transition: -moz-transform 5s cubic-bezier(0,0,0.25,1);
-o-transition: -o-transform 5s cubic-bezier(0,0,0.25,1);
transition: transform 5s cubic-bezier(0,0,0.25,1);
}
*/
</style>
</head>
<body>
<!-- <p>Stuff to test tilelayers as canvases to prevent the 1px tile gap.</p> -->
<div>
<button onclick='map.zoomIn(0.1)'> + 0.1 </button>
<button onclick='map.zoomOut(0.1)'> - 0.1 </button>
<span id='zoomlevel' style='width: 5em; display:inline-block'></span>
<button onclick='toggleOverflow()'> Overflow </button>
<button onclick='toggleLayers()'> OSM/debug </button>
</div>
<div id="map" class="map"></div>
<script type="text/javascript">
var tileSize = 128;
// In case we comment out the NoGap file
if (!L.TileLayer.NoGap) {
L.TileLayer.NoGap = L.TileLayer;
}
// var DebugTileLayer = L.TileLayer.extend({
var DebugTileLayer = L.TileLayer.NoGap.extend({
getTileUrl: function getTileUrl(coords) {
var canvas = document.createElement('canvas');
var tileSize = this.getTileSize();
canvas.setAttribute('width', tileSize.x);
canvas.setAttribute('height', tileSize.y);
var ctx = canvas.getContext('2d');
ctx.fillStyle = 'rgba(245,245,220,0.3)';
ctx.fillRect(0, 0, tileSize.x, tileSize.y);
ctx.strokeStyle = 'green';
ctx.fillStyle = 'green';
ctx.strokeRect(2, 2, tileSize.x - 4, tileSize.y - 4);
ctx.font = (tileSize.x / 10) + "px Sans"
ctx.fillText( coords.x + "," + coords.y + "," + coords.z,
tileSize.x / 4 + Math.random() * 10,
tileSize.y * 3/4 + Math.random() * 10);
// return tile;
return canvas.toDataURL();
}
});
var mapopts = {
zoomSnap: 0.1
};
var osmUrl = 'http://{s}.osm.maptiles.xyz/{z}/{x}/{y}.png',
osmAttrib = '© <a href="http://openstreetmap.org/copyright">OpenStreetMap</a> contributors',
osm = new L.TileLayer.NoGap(osmUrl, {
// osm = new L.TileLayer(osmUrl, {
maxZoom: 18,
attribution: osmAttrib,
keepBuffer: 0,
zIndex: -10
// tileSize: tileSize
});
var kittenUrl = 'https://placekitten.com/256/256',
kittens = new L.TileLayer.NoGap(kittenUrl, {
maxZoom: 18,
attribution: "Placekitten",
keepBuffer: 0,
tileSize: tileSize
});
var debug = new DebugTileLayer(null, {
tileSize: tileSize,
keepBuffer: 0,
zIndex: 10
});
// Hack to provide some synthetic delay
debug.createTile = function(coords, done){
var tile = document.createElement('img');
tile.src = this.getTileUrl(coords);
setTimeout(done, Math.random()*5000);
return tile;
};
var map = L.map('map', mapopts).setView([0,0],0);
map.addLayer(osm);
// map.addLayer(kittens);
// map.addLayer(debug);
var gridDebug = L.gridLayer({
attribution: 'Grid Layer',
// tileSize: L.point(150, 80),
tileSize: tileSize
});
var gridOsm = L.gridLayer({
attribution: 'Grid Layer',
// tileSize: L.point(150, 80),
// tileSize: tileSize
});
gridDebug.createTile = function (coords) {
var tile = L.DomUtil.create('div', 'tile-coords128');
tile.innerHTML = [coords.x, coords.y, coords.z].join(', ');
return tile;
};
gridOsm.createTile = function (coords) {
var tile = L.DomUtil.create('div', 'tile-coords256');
tile.innerHTML = [coords.x, coords.y, coords.z].join(', ');
return tile;
};
map.addLayer(gridOsm);
function toggleOverflow(){
var c = map.getContainer();
if (c.style.overflow === 'visible') {
c.style.overflow = 'hidden';
c.style.margin = 0;
c.style.height = 'calc( 100vh - 100px )';
c.style.width = '100vw'
} else {
c.style.overflow = 'visible';
c.style.margin = '256px';
c.style.height = 'calc( 100vh - 612px )';
c.style.width = 'calc( 100vw - 512px )'
}
map.invalidateSize();
}
function toggleLayers(){
if (map.hasLayer(osm)) {
osm.remove();
gridOsm.remove();
debug.addTo(map);
gridDebug.addTo(map);
map.getContainer().style.background = '#ddd';
} else {
debug.remove();
gridDebug.remove();
osm.addTo(map);
gridOsm.addTo(map);
map.getContainer().style.background = 'red';
}
}
map.on('zoomend', function(){
document.getElementById('zoomlevel').innerHTML = map.getZoom();
});
</script>
</body>
</html>