@goshawk22/leaflet-elevation
Version:
A Leaflet plugin that allows to add elevation profiles using d3js
347 lines (289 loc) • 10.1 kB
JavaScript
/*
* https://github.com/adoroszlai/joebed/tree/gh-pages
*
* The MIT License (MIT)
*
* Copyright (c) 2014- Doroszlai Attila, 2019- Raruto
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
L.Mixin.Selectable = {
includes: L.Mixin.Events,
setSelected: function(s) {
var selected = !!s;
if (this._selected !== selected) {
this._selected = selected;
this.fire('selected');
}
},
isSelected: function() {
return !!this._selected;
},
};
L.Mixin.Selection = {
includes: L.Mixin.Events,
getSelection: function() {
return this._selected;
},
setSelection: function(item) {
if (this._selected === item) {
if (item !== null) {
item.setSelected(!item.isSelected());
if (!item.isSelected()) {
this._selected = null;
}
}
} else {
if (this._selected) {
this._selected.setSelected(false);
}
this._selected = item;
if (this._selected) {
this._selected.setSelected(true);
}
}
this.fire('selection_changed');
},
};
L.Control.LayersLegend = L.Control.Layers.extend({
_onInputClick: function() {
this._handlingClick = true;
this._layerControlInputs.reduceRight((_,input) => {
if (input.checked) {
this._map.fireEvent("legend_selected", {
layer: this._getLayer(input.layerId).layer,
input: input,
}, true);
return input;
}
}, 0);
this._handlingClick = false;
this._refocusOnMap();
}
});
L.control.layersLegend = (baseLayers, overlays, options) => new L.Control.LayersLegend(baseLayers, overlays, options);
L.GeoJSON.include(L.Mixin.Selectable);
L.GpxGroup = L.Class.extend({
options: {
highlight: {
color: '#ff0',
opacity: 1,
},
points: [],
points_options: {
icon: {
iconUrl: '../images/elevation-poi.png',
iconSize: [12, 12],
}
},
flyToBounds: true,
legend: false,
legend_options: {
position: "topright",
collapsed: false,
},
elevation: true,
elevation_options: {
theme: 'yellow-theme',
detached: true,
elevationDiv: '#elevation-div',
},
distanceMarkers: true,
distanceMarkers_options: {
lazy: true
},
},
initialize: function(tracks, options) {
L.Util.setOptions(this, options);
this._count = 0;
this._loadedCount = 0;
this._tracks = tracks;
this._layers = L.featureGroup();
this._markers = L.featureGroup();
this._elevation = L.control.elevation(this.options.elevation_options);
this._legend = L.control.layersLegend(null, null, this.options.legend_options);
this.options.points.forEach((poi) =>
L
.marker(poi.latlng, { icon: L.icon(this.options.points_options.icon) })
.bindTooltip(poi.name, { direction: 'auto' }).addTo(this._markers)
);
},
getBounds: function() {
return this._layers.getBounds();
},
addTo: function(map) {
this._layers.addTo(map);
this._markers.addTo(map);
this._map = map;
this.on('selection_changed', this._onSelectionChanged, this);
this._map.on('legend_selected', this._onLegendSelected, this);
this._tracks.forEach(this.addTrack, this);
},
addTrack: function(track) {
if (track instanceof Object) {
this._loadGeoJSON(track);
} else {
fetch(track)
.then(response => response.ok && response.text())
.then(text => this._elevation._parseFromString(text))
.then(geojson => this._loadGeoJSON(geojson, track.split('/').pop().split('#')[0].split('?')[0]));
}
},
_loadGeoJSON: function(geojson, fallbackName) {
if (geojson) {
geojson.name = geojson.name || (geojson[0] && geojson[0].properties.name) || fallbackName;
this._loadRoute(geojson);
}
},
_loadRoute: function(data) {
if (!data) return;
var line_style = {
color: this._uniqueColors(this._tracks.length)[this._count++],
opacity: 0.75,
weight: 5,
distanceMarkers: this.options.distanceMarkers_options,
};
var route = L.geoJson(data, {
name: data.name || '',
style: (feature) => line_style,
distanceMarkers: line_style.distanceMarkers,
originalStyle: line_style,
filter: feature => feature.geometry.type != "Point",
});
this._elevation.import(this._elevation.__LGEOMUTIL).then(() => {
route.addTo(this._layers);
route.eachLayer((layer) => this._onEachRouteLayer(route, layer));
this._onEachRouteLoaded(route);
});
},
_onEachRouteLayer: function(route, layer) {
var polyline = layer;
route.on('selected', L.bind(this._onRouteSelected, this, route, polyline));
polyline.on('mouseover', L.bind(this._onRouteMouseOver, this, route, polyline));
polyline.on('mouseout', L.bind(this._onRouteMouseOut, this, route, polyline));
polyline.on('click', L.bind(this._onRouteClick, this, route, polyline));
polyline.bindTooltip(route.options.name, { direction: 'auto', sticky: true, });
},
_onEachRouteLoaded: function(route) {
if (this.options.legend) {
this._legend.addBaseLayer(route, '<svg id="legend_' + route._leaflet_id + '" width="25" height="10" version="1.1" xmlns="http://www.w3.org/2000/svg">' + '<line x1="0" x2="50" y1="5" y2="5" stroke="' + route.options.originalStyle.color + '" fill="transparent" stroke-width="5" /></svg>' + ' ' + route.options.name);
}
this.fire('route_loaded', { route: route });
if (++this._loadedCount === this._tracks.length) {
this.fire('loaded');
if (this.options.flyToBounds) {
this._map.flyToBounds(this.getBounds(), { duration: 0.25, easeLinearity: 0.25, noMoveStart: true });
}
if (this.options.legend) {
this._legend.addTo(this._map);
}
}
},
highlight: function(route, polyline) {
polyline.setStyle(this.options.highlight);
if (this.options.distanceMarkers) {
polyline.addDistanceMarkers();
}
},
unhighlight: function(route, polyline) {
polyline.setStyle(route.options.originalStyle);
if (this.options.distanceMarkers) {
polyline.removeDistanceMarkers();
}
},
_onRouteMouseOver: function(route, polyline) {
if (!route.isSelected()) {
this.highlight(route, polyline);
if (this.options.legend) {
this.setSelection(route);
L.DomUtil.get('legend_' + route._leaflet_id).parentNode.previousSibling.click();
}
}
this.fire('route_mouseover', { route: route, polyline: polyline });
},
_onRouteMouseOut: function(route, polyline) {
if (!route.isSelected()) {
this.unhighlight(route, polyline);
}
this.fire('route_mouseout', { route: route, polyline: polyline });
},
_onRouteClick: function(route, polyline) {
this.setSelection(route);
},
_onRouteSelected: function(route, polyline) {
if (!route.isSelected()) {
this.unhighlight(route, polyline);
}
},
_onSelectionChanged: function(e) {
var elevation = this._elevation;
var eleDiv = elevation.getContainer();
var route = this.getSelection();
elevation.clear();
if (route && route.isSelected()) {
if (!eleDiv) {
elevation.addTo(this._map);
}
route.getLayers().forEach(function(layer) {
if (layer instanceof L.Polyline) {
elevation.addData(layer, false);
layer.bringToFront();
}
});
} else {
if (eleDiv) {
elevation.remove();
}
}
},
_onLegendSelected: function(e) {
var parent = e.input.closest('.leaflet-control-layers-list');
var route = e.layer;
if (!route.isSelected()) {
this.setSelection(route);
for (var i in route._layers) {
this.highlight(route, route._layers[i]);
}
this._map.flyToBounds(e.layer.getBounds());
}
parent.scroll({ top: (e.input.offsetTop - parent.offsetTop) || 0, behavior: 'smooth' });
this._layers.eachLayer(layer => {
var legend = L.DomUtil.get('legend_' + layer._leaflet_id);
legend.querySelector("line").style.stroke = layer.isSelected() ? this.options.highlight.color : "";
legend.parentNode.style.fontWeight = layer.isSelected() ? "700" : "";
});
},
_uniqueColors: function(count) {
return count === 1 ? ['#0000ff'] : new Array(count).fill(null).map((_,i) => this._hsvToHex(i * (1 / count), 1, 0.7));
},
_hsvToHex: function(h, s, v) {
var i = Math.floor(h * 6);
var f = h * 6 - i;
var p = v * (1 - s);
var q = v * (1 - f * s);
var t = v * (1 - (1 - f) * s);
var rgb = { 0: [v, t, p], 1: [q, v, p], 2: [p, v, t], 3: [p, q, v], 4: [t, p, v], 5: [v, p, q] }[i % 6];
return rgb.map(d => d * 255).reduce((hex, byte) => hex + ((byte >> 4) & 0x0F).toString(16) + (byte & 0x0F).toString(16), "#");
},
removeFrom: function(map) {
this._layers.removeFrom(map);
},
});
L.GpxGroup.include(L.Mixin.Events);
L.GpxGroup.include(L.Mixin.Selection);
L.gpxGroup = (tracks, options) => new L.GpxGroup(tracks, options);