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Adding reverselookup to override query

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This commit is contained in:
Will Bradley 2013-07-29 02:13:15 -04:00
parent 172e99629b
commit 0e53e41a0e
2 changed files with 82 additions and 12 deletions
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2
index.html
View File

@ -71,7 +71,7 @@
var map = L.map('map').setView([51.505, -0.09], 2); var map = L.map('map').setView([51.505, -0.09], 2);
L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', { L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', {
attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>; Imagery &copy; <a href="http://cloudmade.com">CloudMade</a>', attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>; Imagery &copy; <a href="http://cloudmade.com">CloudMade</a>',
maxZoom: 18 maxZoom: 16
}).addTo(map); }).addTo(map);
// Get url params // Get url params

92
print.html
View File

@ -80,26 +80,32 @@
params[tmparr[0]] = tmparr[1]; params[tmparr[0]] = tmparr[1];
} }
var query = decodeURIComponent(params["q"]); var query = "";
var map = L.map('map', {zoomControl: false}); //.setView([51.505, -0.09], 13); var map = L.map('map', {zoomControl: false}); //.setView([51.505, -0.09], 13);
L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', {
attribution: query+' map from PrintMaps.com; Data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>; Imagery &copy; <a href="http://cloudmade.com">CloudMade</a>', if(params["q"]){
maxZoom: 18 window.query = decodeURIComponent(params["q"]);
}).addTo(map); updateTitle(window.query);
}
// decode query param // decode query param
if( params["b0"] && params["b1"] && params["b2"] && params["b3"]){ if(params["b0"] && params["b1"] && params["b2"] && params["b3"]){
updateMap(query,[[decodeURIComponent(params["b0"]), decodeURIComponent(params["b1"])],
// Update the map
updateMap([[decodeURIComponent(params["b0"]), decodeURIComponent(params["b1"])],
[decodeURIComponent(params["b2"]), decodeURIComponent(params["b3"])]]); [decodeURIComponent(params["b2"]), decodeURIComponent(params["b3"])]]);
// Figure out what the actual name of this place is
var latavg = (parseFloat(decodeURIComponent(params["b0"]))+parseFloat(decodeURIComponent(params["b2"])))/2;
var lonavg = (parseFloat(decodeURIComponent(params["b1"]))+parseFloat(decodeURIComponent(params["b3"])))/2;
doReverseLookup(latavg, lonavg, map.getZoom());
} }
else { else {
alert("No boundaries given!"); alert("No boundaries given!");
} }
function updateMap(bounds){
function updateMap(query,bounds){
// Generate title
document.title = query + " map";
// Fit map to the GPS boundaries // Fit map to the GPS boundaries
map.fitBounds(bounds); map.fitBounds(bounds);
}; };
@ -120,6 +126,70 @@
},2000); },2000);
} }
function doReverseLookup(lat, lon, zoom){
// AJAX request for checking where we are
reverseLookup(lat,lon,zoom,function(xmlhttp) {
// Decode response as JSON
response = JSON.parse(xmlhttp.responseText);
if(response.address){
console.log(response.address);
console.log(zoom);
var loc = [];
// Set search textbox to where we think we are
if(response.address.suburb && zoom > 14){
loc.push(response.address.suburb);
}
if(response.address.city && zoom > 9){
loc.push(response.address.city);
}
else {
if(response.address.county && zoom > 9){
loc.push(response.address.county+" County");
}
}
if(response.address.state && zoom >= 8){
loc.push(response.address.state);
}
if(response.address.country && zoom <= 8){
loc.push(response.address.country);
}
window.query = loc.join(", ");
updateTitle(window.query);
setTileLayer(window.query);
}
else{
console.log("No reverse-lookup json");
setTileLayer(window.query);
}
});
}
function reverseLookup(lat,lon,zoom,callback){
xmlhttp=new XMLHttpRequest();
request = "http://nominatim.openstreetmap.org/reverse?format=json&lat="+encodeURIComponent(lat)+"&lon="+encodeURIComponent(lon)+"&zoom="+encodeURIComponent(zoom);
xmlhttp.open("GET",request,true);
xmlhttp.send();
xmlhttp.onreadystatechange = function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
callback(xmlhttp);
}
};
}
function updateTitle(title){
// Generate title
document.title = query + " map";
}
function setTileLayer(query){
L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', {
attribution: query+' map from PrintMaps.com; Data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>; Imagery &copy; <a href="http://cloudmade.com">CloudMade</a>',
maxZoom: 18
}).addTo(map);
}
function halveMap(){ function halveMap(){
resizeScale = 0.281; // magic number that seems to work best in Chrome resizeScale = 0.281; // magic number that seems to work best in Chrome