leaflet
Version:
JavaScript library for mobile-friendly interactive maps
250 lines (220 loc) • 8.59 kB
HTML
<html>
<head>
<title>Leaflet tile debug</title>
<link rel="stylesheet" href="../../dist/leaflet.css" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="../css/screen.css" />
<style>
* {
margin: 0;
padding: 0;
}
#outer {
position: absolute;
width: calc(2*256px + 600px);
height: calc(2*256px + 400px);
border: 10px solid rgba(0, 0, 255, 0.4);
background-color: transparent;
}
#middle, #map {
position: absolute;
margin: calc(266px - 10px);
width: 600px;
height: 400px;
border: 10px solid transparent;
}
#middle {
pointer-events: none;
z-index: 1000;
border-color: rgba(0, 255, 0, 0.4);
}
#map {
overflow: visible;
}
button {
width: 40px;
text-align: center;
margin-right: 5px;
}
.grid {
border: red 1px solid;
line-height: 256px;
text-align: center;
box-sizing: border-box;
}
#stats {
position: absolute;
z-index: 1000;
width: 300px;
right: 0;
top: 10px;
bottom: 0;
}
#zoomtable td {
height: 40px;
}
.diag {
margin-bottom: 20px;
}
tr:nth-child(odd) {
background-color: #eee;
}
</style>
<script type="text/javascript" src="../../build/deps.js"></script>
<script src="../leaflet-include.js"></script>
</head>
<body>
<div id="outer"></div>
<div id="middle"></div>
<div id="map"></div>
<div id="stats">
<div class="diag">
<div><button id="dc">DC</button>(flyTo)</div>
<div><button id="sf">SF</button>(setView)</div>
<div><button id="trd">TRD</button>(flyTo)</div>
<div><button id="lnd">LND</button>(fract. zoom)</div>
<div><button id="kyiv">KIEV</button>(setView, fract. zoom)</div>
<div><button id="mad">MAD</button>(fitBounds)</div>
<div><button id="nul">NUL</button>(image overlay)</div>
<div><button id="stop">stop</button></div>
</div>
<table id="zoomtable" class="diag">
<tr><td>on movestart</td><td id='movestart' width=230></td></tr>
<tr><td>on zoomstart</td><td id='zoomstart'></td></tr>
<tr><td>on move</td><td id='move'></td></tr>
<tr><td>on moveend</td><td id='moveend'></td></tr>
<tr><td>on zoomend</td><td id='zoomend'></td></tr>
<tr><td>on grid load</td><td id='load'></td></tr>
</table>
<table>
<tr>
<th>event</th>
<th>Grid</th>
<th>Positron</th>
</tr>
<tr>
<td>tileloadstart</td>
<td id='grid-tileloadstart'></td>
<td id='positron-tileloadstart'></td>
</tr>
<tr>
<td>tileload</td>
<td id='grid-tileload'></td>
<td id='positron-tileload'></td>
</tr>
<tr>
<td>tileerror</td>
<td id='grid-tileerror'></td>
<td id='positron-tileerror'></td>
</tr>
<tr>
<td>tileunload</td>
<td id='grid-tileunload'></td>
<td id='positron-tileunload'></td>
</tr>
<tr>
<td>visible</td>
<td id='grid-visible'></td>
<td id='positron-visible'></td>
</tr>
<tr>
<td>grid load</td>
<td id='grid-load'></td>
<td id='positron-load'></td>
</tr>
</table>
<button id="reset">reset</button>
</div>
<script type="text/javascript">
var kyiv = [50.5, 30.5],
lnd = [51.51, -0.12],
sf = [37.77, -122.42],
dc = [38.91, -77.04],
trd = [63.41, 10.41],
madBounds = [[40.70, -4.19], [40.12, -3.31]],
mad = [40.40, -3.7];
var map = L.map('map', {
// zoomSnap: 0,
// zoomAnimation: false,
fadeAnimation: false
}).setView(dc, 16);
var gridCounts = {},
positronCounts = {},
gridLoadData = {};
resetCounter();
var positron = L.tileLayer('http://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', {
attribution: '© <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, © <a href="http://cartodb.com/attributions">CartoDB</a>'
});
var grid = L.gridLayer({
attribution: 'Grid Layer',
tileSize: L.point(256, 256)
});
grid.createTile = function (coords) {
var tile = L.DomUtil.create('div', 'grid');
var indexStr = [coords.x, coords.y, coords.z].join(', ');
if (!(indexStr in gridLoadData)) {
gridLoadData[indexStr] = 0;
}
tile.innerHTML = ++gridLoadData[indexStr];
// double tile loading alert
// if (gridLoadData[indexStr] > 1) {
// alert(indexStr);
// }
// more tile loadings -> more red grid tile
tile.style.backgroundColor = 'rgba(255,0,0,' + (gridLoadData[indexStr] - 1) / 5 + ')';
return tile;
};
grid.on('tileload tileunload tileerror tileloadstart load', function(ev){
document.getElementById('grid-' + ev.type).innerHTML = ++gridCounts[ev.type];
document.getElementById('grid-visible').innerHTML = grid._container.querySelectorAll('.leaflet-tile').length;
});
positron.on('tileload tileunload tileerror tileloadstart load', function(ev){
document.getElementById('positron-' + ev.type).innerHTML = ++positronCounts[ev.type];
document.getElementById('positron-visible').innerHTML = positron._container.querySelectorAll('.leaflet-tile').length;
});
map.addLayer(positron);
map.addLayer(grid);
var marker1 = L.marker(kyiv).addTo(map),
marker2 = L.marker(lnd).addTo(map),
marker3 = L.marker(dc).addTo(map),
marker4 = L.marker(sf).addTo(map),
marker5 = L.marker(trd).addTo(map),
marker6 = L.marker(mad).addTo(map);
var nullIslandKitten = L.imageOverlay('http://placekitten.com/300/400?image=6', [[-0.2,-0.15], [0.2, 0.15]]).addTo(map);
document.getElementById('dc').onclick = function () { map.flyTo(dc, 7, {duration: 40}); };
document.getElementById('sf').onclick = function () { map.setView(sf, 10, {duration: 40, animate: true}); };
document.getElementById('trd').onclick = function () { map.flyTo(trd, 10, {duration: 40}); };
document.getElementById('lnd').onclick = function () { map.flyTo(lnd, 9.25, {duration: 40}); };
document.getElementById('kyiv').onclick = function () { map.setView(kyiv, 9.25, {duration: 40}); };
document.getElementById('mad').onclick = function () { map.fitBounds(madBounds); };
document.getElementById('nul').onclick = function () { map.flyTo([0, 0], 10, {duration: 40}); };
document.getElementById('stop').onclick = function () { map.stop(); };
document.getElementById('reset').onclick = function () {
resetCounter();
}
function attachMoveEvent(name) {
map.on(name, function(){
document.getElementById(name).innerHTML = map.getCenter() + ' z' + map.getZoom();
});
}
attachMoveEvent('movestart');
attachMoveEvent('zoomstart');
attachMoveEvent('move');
attachMoveEvent('moveend');
attachMoveEvent('zoomend');
positron.on('load', function(){
document.getElementById('load').innerHTML = map.getCenter() + ' z' + map.getZoom();
});
function resetCounter() {
var fields = ['tileload', 'tileerror', 'tileloadstart', 'tileunload', 'load', 'visible'];
for (var i = 0; i < fields.length; i++) {
gridCounts[fields[i]] = 0;
positronCounts[fields[i]] = 0;
document.getElementById('positron-' + fields[i]).innerHTML = 0;
document.getElementById('grid-' + fields[i]).innerHTML = 0;
}
};
</script>
</body>
</html>