openstreetmap-website/app/assets/javascripts/leaflet.share.js
2013-08-05 08:31:45 -07:00

325 lines
8.7 KiB
JavaScript

L.OSM.share = function (options) {
var control = L.control(options),
marker = L.marker([0, 0], {draggable: true}),
locationFilter = new L.LocationFilter({
enableButton: false,
adjustButton: false
});
control.onAdd = function (map) {
var $container = $('<div>')
.attr('class', 'control-share');
$('<a>')
.attr('class', 'control-button')
.attr('href', '#')
.attr('title', 'Share')
.html('<span class="icon share"></span>')
.on('click', toggle)
.appendTo($container);
var $ui = $('<div>')
.attr('class', 'share-ui');
$('<div>')
.attr('class', 'sidebar_heading')
.appendTo($ui)
.append(
$('<a>')
.text(I18n.t('javascripts.close'))
.attr('class', 'sidebar_close')
.attr('href', '#')
.bind('click', toggle))
.append(
$('<h4>')
.text(I18n.t('javascripts.share.title')));
// Link
var $linkSection = $('<div>')
.attr('class', 'section share-link')
.appendTo($ui);
$('<h4>')
.text(I18n.t('javascripts.share.link'))
.appendTo($linkSection);
var $form = $('<form>')
.attr('class', 'standard-form')
.appendTo($linkSection);
$('<div>')
.attr('class', 'form-row')
.appendTo($form)
.append(
$('<label>')
.attr('for', 'link_marker')
.append(
$('<input>')
.attr('id', 'link_marker')
.attr('type', 'checkbox')
.bind('change', toggleMarker))
.append(I18n.t('javascripts.share.include_marker')));
var $shortLink, $longLink;
$('<ul>')
.appendTo($linkSection)
.append($('<li>')
.append($longLink = $('<a>')
.text(I18n.t('javascripts.share.long_link'))))
.append($('<li>')
.append($shortLink = $('<a>')
.text(I18n.t('javascripts.share.short_link'))));
// Embeddable HTML
var $embedSection = $('<div>')
.attr('class', 'section share-html')
.appendTo($ui);
$('<h4>')
.text(I18n.t('javascripts.share.embed'))
.appendTo($embedSection);
$form = $('<form>')
.attr('class', 'standard-form')
.appendTo($embedSection);
$('<div>')
.attr('class', 'form-row')
.appendTo($form)
.append(
$('<label>')
.attr('for', 'embed_marker')
.append(
$('<input>')
.attr('id', 'embed_marker')
.attr('type', 'checkbox')
.bind('change', toggleMarker))
.append(I18n.t('javascripts.share.include_marker')));
$('<div>')
.attr('class', 'form-row')
.appendTo($form)
.append(
$('<textarea>')
.attr('id', 'embed_html')
.on('click', select));
$('<p>')
.attr('class', 'deemphasize')
.text(I18n.t('javascripts.share.paste_html'))
.appendTo($embedSection);
// Image
var $imageSection = $('<div>')
.attr('class', 'section share-image')
.appendTo($ui);
$('<h4>')
.text(I18n.t('javascripts.share.image'))
.appendTo($imageSection);
$form = $('<form>')
.attr('class', 'standard-form')
.attr('action', '/export/finish')
.attr('method', 'post')
.appendTo($imageSection);
$('<div>')
.attr('class', 'form-row')
.appendTo($form)
.append(
$('<label>')
.attr('for', 'image_filter')
.append(
$('<input>')
.attr('id', 'image_filter')
.attr('type', 'checkbox')
.bind('change', toggleFilter))
.append(I18n.t('javascripts.share.custom_dimensions')));
$('<div>')
.attr('class', 'form-row')
.appendTo($form)
.append(
$('<label>')
.attr('class', 'standard-label')
.attr('for', 'mapnik_format')
.text(I18n.t('javascripts.share.format')))
.append($('<select>')
.attr('name', 'mapnik_format')
.attr('id', 'mapnik_format')
.append($('<option>').val('png').text('PNG').prop('selected', true))
.append($('<option>').val('jpeg').text('JPEG'))
.append($('<option>').val('svg').text('SVG'))
.append($('<option>').val('pdf').text('PDF')));
$('<div>')
.attr('class', 'form-row')
.appendTo($form)
.append($('<label>')
.attr('class', 'standard-label')
.attr('for', 'mapnik_scale')
.text(I18n.t('javascripts.share.scale')))
.append('1 : ')
.append($('<input>')
.attr('name', 'mapnik_scale')
.attr('id', 'mapnik_scale')
.attr('type', 'text')
.on('change', update));
['minlon', 'minlat', 'maxlon', 'maxlat'].forEach(function(name) {
$('<input>')
.attr('id', 'mapnik_' + name)
.attr('name', name)
.attr('type', 'hidden')
.appendTo($form);
});
$('<input>')
.attr('name', 'format')
.attr('value', 'mapnik')
.attr('type', 'hidden')
.appendTo($form);
$('<p>')
.attr('class', 'deemphasize')
.html(I18n.t('javascripts.share.image_size') + ' <span id="mapnik_image_width"></span> x <span id="mapnik_image_height"></span>')
.appendTo($form);
$('<input>')
.attr('type', 'submit')
.attr('value', I18n.t('javascripts.share.download'))
.appendTo($form);
locationFilter
.on('change', update)
.addTo(map);
map.on('moveend layeradd layerremove', update);
marker.on('dragend', update);
options.sidebar.addPane($ui);
$ui
.on('hide', hidden);
function hidden() {
map.removeLayer(marker);
locationFilter.disable();
update();
}
function toggle(e) {
e.stopPropagation();
e.preventDefault();
$('#mapnik_scale').val(getScale());
marker.setLatLng(map.getCenter());
update();
options.sidebar.togglePane($ui);
}
function toggleMarker() {
if ($(this).is(':checked')) {
map.addLayer(marker);
} else {
map.removeLayer(marker);
}
update();
}
function toggleFilter() {
if ($(this).is(':checked')) {
if (!locationFilter.getBounds().isValid()) {
locationFilter.setBounds(map.getBounds().pad(-0.2));
}
locationFilter.enable();
} else {
locationFilter.disable();
}
update();
}
function update() {
var bounds = map.getBounds();
$('#link_marker, #embed_marker')
.prop('checked', map.hasLayer(marker));
// Link
$shortLink.attr('href', map.getShortUrl(marker));
$longLink.attr('href', map.getUrl(marker));
// Embed
var params = {
bbox: bounds.toBBoxString(),
layer: map.getMapBaseLayerId()
};
if (map.hasLayer(marker)) {
params.marker = marker.getLatLng().lat + ',' + marker.getLatLng().lng;
}
$('#embed_html').val(
'<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="' +
'http://' + OSM.SERVER_URL + '/export/embed.html?' + $.param(params) +
'" style="border: 1px solid black"></iframe><br/>' +
'<small><a href="' + map.getUrl(marker) + '</a></small>');
// Image
if (locationFilter.isEnabled()) {
bounds = locationFilter.getBounds();
}
var scale = $("#mapnik_scale").val(),
size = L.bounds(L.CRS.EPSG3857.project(bounds.getSouthWest()),
L.CRS.EPSG3857.project(bounds.getNorthEast())).getSize(),
maxScale = Math.floor(Math.sqrt(size.x * size.y / 0.3136));
$('#mapnik_minlon').val(bounds.getWest());
$('#mapnik_minlat').val(bounds.getSouth());
$('#mapnik_maxlon').val(bounds.getEast());
$('#mapnik_maxlat').val(bounds.getNorth());
if (scale < maxScale) {
scale = roundScale(maxScale);
$("#mapnik_scale").val(scale);
}
$("#mapnik_image_width").text(Math.round(size.x / scale / 0.00028));
$("#mapnik_image_height").text(Math.round(size.y / scale / 0.00028));
}
function select() {
$(this).select();
}
function getScale() {
var bounds = map.getBounds(),
centerLat = bounds.getCenter().lat,
halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
meters = halfWorldMeters * (bounds.getEast() - bounds.getWest()) / 180,
pixelsPerMeter = map.getSize().x / meters,
metersPerPixel = 1 / (92 * 39.3701);
return Math.round(1 / (pixelsPerMeter * metersPerPixel));
}
function roundScale(scale) {
var precision = 5 * Math.pow(10, Math.floor(Math.LOG10E * Math.log(scale)) - 2);
return precision * Math.ceil(scale / precision);
}
return $container[0];
};
return control;
};