colouring-montreal/frontend/main.js

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JavaScript
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2018-08-01 12:58:02 -04:00
/**
* Background map
*/
function map(){
var OS_API_KEY = 'NVUxtY5r8eA6eIfwrPTAGKrAAsoeI9E9';
var light = L.tileLayer('https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/{tilematrixSet}/{layer}/{z}/{x}/{y}.png?key={key}', {
key: OS_API_KEY,
tilematrixSet: 'EPSG:3857',
layer: 'Light 3857'
});
var night = L.tileLayer('https://api2.ordnancesurvey.co.uk/mapping_api/v1/service/zxy/{tilematrixSet}/{layer}/{z}/{x}/{y}.png?key={key}', {
key: OS_API_KEY,
tilematrixSet: 'EPSG:3857',
layer: 'Night 3857'
});
var baseMaps = {
"Light": light,
"Dark": night
};
var map = L.map('map', {
layers: light,
zoomControl: false,
attributionControl: false,
maxZoom: 18,
minZoom: 7,
center: ([51.507222, -0.1275]),
zoom: 14,
doubleClickZoom: false,
});
var attr = L.control.attribution({prefix: ""});
attr.addAttribution("Contains OS data © Crown copyright: OS Maps baselayers and building outlines. Building attribute data is © Colouring London contributors");
attr.addTo(map);
L.control.zoom({position: 'topright'}).addTo(map);
L.control.layers(baseMaps, {}, {position: 'topright'}).addTo(map);
}
/**
* Simple carousel
*
* Based on example code by Christian Heilmann
* http://christianheilmann.com/2015/04/08/keeping-it-simple-coding-a-carousel/
*/
carousel = function(){
var box = document.querySelector('.carousel');
if (!box) {
return
}
var next = box.querySelector('.next');
var prev = box.querySelector('.back');
// Define the global counter, the items and the
// current item
var counter = 0;
var items = box.querySelectorAll('.carousel-content li');
var amount = items.length;
var current = items[0];
box.classList.add('active');
// navigate through the carousel
function navigate(direction) {
// hide the old current list item
current.classList.remove('current');
// calculate the new position
counter = (counter + direction) % amount;
counter = counter < 0 ? amount - 1 : counter;
// set new current element
// and add CSS class
current = items[counter];
current.classList.add('current');
}
// add event handlers to buttons
next.addEventListener('click', function(ev) {
navigate(1);
});
prev.addEventListener('click', function(ev) {
navigate(-1);
});
// show the first element
// (when direction is 0 counter doesn't change)
navigate(0);
}
/**
* "Cut the mustard" and setup page
*/
if('querySelector' in document
&& 'addEventListener' in window) {
carousel();
map();
}