|
| 1 | +L.Control.MiniMap = L.Control.extend({ |
| 2 | + options: { |
| 3 | + position: 'bottomright', |
| 4 | + toggleDisplay: true, |
| 5 | + zoomLevelOffset: -5, |
| 6 | + zoomLevelFixed: false, |
| 7 | + zoomAnimation: false, |
| 8 | + autoToggleDisplay: false, |
| 9 | + width: 150, |
| 10 | + height: 150, |
| 11 | + aimingRectOptions: {color: "#ff7800", weight: 1, clickable: false}, |
| 12 | + shadowRectOptions: {color: "#000000", weight: 1, clickable: false, opacity:0, fillOpacity:0} |
| 13 | + }, |
| 14 | + |
| 15 | + hideText: 'Hide MiniMap', |
| 16 | + |
| 17 | + showText: 'Show MiniMap', |
| 18 | + |
| 19 | + //layer is the map layer to be shown in the minimap |
| 20 | + initialize: function (layer, options) { |
| 21 | + L.Util.setOptions(this, options); |
| 22 | + //Make sure the aiming rects are non-clickable even if the user tries to set them clickable (most likely by forgetting to specify them false) |
| 23 | + this.options.aimingRectOptions.clickable = false; |
| 24 | + this.options.shadowRectOptions.clickable = false; |
| 25 | + this._layer = layer; |
| 26 | + }, |
| 27 | + |
| 28 | + onAdd: function (map) { |
| 29 | + |
| 30 | + this._mainMap = map; |
| 31 | + |
| 32 | + //Creating the container and stopping events from spilling through to the main map. |
| 33 | + this._container = L.DomUtil.create('div', 'leaflet-control-minimap'); |
| 34 | + this._container.style.width = this.options.width + 'px'; |
| 35 | + this._container.style.height = this.options.height + 'px'; |
| 36 | + L.DomEvent.disableClickPropagation(this._container); |
| 37 | + L.DomEvent.on(this._container, 'mousewheel', L.DomEvent.stopPropagation); |
| 38 | + |
| 39 | + |
| 40 | + this._miniMap = new L.Map(this._container, |
| 41 | + { |
| 42 | + attributionControl: false, |
| 43 | + zoomControl: false, |
| 44 | + zoomAnimation: this.options.zoomAnimation, |
| 45 | + autoToggleDisplay: this.options.autoToggleDisplay, |
| 46 | + touchZoom: !this.options.zoomLevelFixed, |
| 47 | + scrollWheelZoom: !this.options.zoomLevelFixed, |
| 48 | + doubleClickZoom: !this.options.zoomLevelFixed, |
| 49 | + boxZoom: !this.options.zoomLevelFixed, |
| 50 | + crs: map.options.crs |
| 51 | + }); |
| 52 | + |
| 53 | + this._miniMap.addLayer(this._layer); |
| 54 | + |
| 55 | + //These bools are used to prevent infinite loops of the two maps notifying each other that they've moved. |
| 56 | + this._mainMapMoving = false; |
| 57 | + this._miniMapMoving = false; |
| 58 | + |
| 59 | + //Keep a record of this to prevent auto toggling when the user explicitly doesn't want it. |
| 60 | + this._userToggledDisplay = false; |
| 61 | + this._minimized = false; |
| 62 | + |
| 63 | + if (this.options.toggleDisplay) { |
| 64 | + this._addToggleButton(); |
| 65 | + } |
| 66 | + |
| 67 | + this._miniMap.whenReady(L.Util.bind(function () { |
| 68 | + this._aimingRect = L.rectangle(this._mainMap.getBounds(), this.options.aimingRectOptions).addTo(this._miniMap); |
| 69 | + this._shadowRect = L.rectangle(this._mainMap.getBounds(), this.options.shadowRectOptions).addTo(this._miniMap); |
| 70 | + this._mainMap.on('moveend', this._onMainMapMoved, this); |
| 71 | + this._mainMap.on('move', this._onMainMapMoving, this); |
| 72 | + this._miniMap.on('movestart', this._onMiniMapMoveStarted, this); |
| 73 | + this._miniMap.on('move', this._onMiniMapMoving, this); |
| 74 | + this._miniMap.on('moveend', this._onMiniMapMoved, this); |
| 75 | + }, this)); |
| 76 | + |
| 77 | + return this._container; |
| 78 | + }, |
| 79 | + |
| 80 | + addTo: function (map) { |
| 81 | + L.Control.prototype.addTo.call(this, map); |
| 82 | + this._miniMap.setView(this._mainMap.getCenter(), this._decideZoom(true)); |
| 83 | + this._setDisplay(this._decideMinimized()); |
| 84 | + return this; |
| 85 | + }, |
| 86 | + |
| 87 | + onRemove: function (map) { |
| 88 | + this._mainMap.off('moveend', this._onMainMapMoved, this); |
| 89 | + this._mainMap.off('move', this._onMainMapMoving, this); |
| 90 | + this._miniMap.off('moveend', this._onMiniMapMoved, this); |
| 91 | + |
| 92 | + this._miniMap.removeLayer(this._layer); |
| 93 | + }, |
| 94 | + |
| 95 | + _addToggleButton: function () { |
| 96 | + this._toggleDisplayButton = this.options.toggleDisplay ? this._createButton( |
| 97 | + '', this.hideText, 'leaflet-control-minimap-toggle-display', this._container, this._toggleDisplayButtonClicked, this) : undefined; |
| 98 | + }, |
| 99 | + |
| 100 | + _createButton: function (html, title, className, container, fn, context) { |
| 101 | + var link = L.DomUtil.create('a', className, container); |
| 102 | + link.innerHTML = html; |
| 103 | + link.href = '#'; |
| 104 | + link.title = title; |
| 105 | + |
| 106 | + var stop = L.DomEvent.stopPropagation; |
| 107 | + |
| 108 | + L.DomEvent |
| 109 | + .on(link, 'click', stop) |
| 110 | + .on(link, 'mousedown', stop) |
| 111 | + .on(link, 'dblclick', stop) |
| 112 | + .on(link, 'click', L.DomEvent.preventDefault) |
| 113 | + .on(link, 'click', fn, context); |
| 114 | + |
| 115 | + return link; |
| 116 | + }, |
| 117 | + |
| 118 | + _toggleDisplayButtonClicked: function () { |
| 119 | + this._userToggledDisplay = true; |
| 120 | + if (!this._minimized) { |
| 121 | + this._minimize(); |
| 122 | + this._toggleDisplayButton.title = this.showText; |
| 123 | + } |
| 124 | + else { |
| 125 | + this._restore(); |
| 126 | + this._toggleDisplayButton.title = this.hideText; |
| 127 | + } |
| 128 | + }, |
| 129 | + |
| 130 | + _setDisplay: function (minimize) { |
| 131 | + if (minimize != this._minimized) { |
| 132 | + if (!this._minimized) { |
| 133 | + this._minimize(); |
| 134 | + } |
| 135 | + else { |
| 136 | + this._restore(); |
| 137 | + } |
| 138 | + } |
| 139 | + }, |
| 140 | + |
| 141 | + _minimize: function () { |
| 142 | + // hide the minimap |
| 143 | + if (this.options.toggleDisplay) { |
| 144 | + this._container.style.width = '19px'; |
| 145 | + this._container.style.height = '19px'; |
| 146 | + this._toggleDisplayButton.className += ' minimized'; |
| 147 | + } |
| 148 | + else { |
| 149 | + this._container.style.display = 'none'; |
| 150 | + } |
| 151 | + this._minimized = true; |
| 152 | + }, |
| 153 | + |
| 154 | + _restore: function () { |
| 155 | + if (this.options.toggleDisplay) { |
| 156 | + this._container.style.width = this.options.width + 'px'; |
| 157 | + this._container.style.height = this.options.height + 'px'; |
| 158 | + this._toggleDisplayButton.className = this._toggleDisplayButton.className |
| 159 | + .replace(/(?:^|\s)minimized(?!\S)/g, ''); |
| 160 | + } |
| 161 | + else { |
| 162 | + this._container.style.display = 'block'; |
| 163 | + } |
| 164 | + this._minimized = false; |
| 165 | + }, |
| 166 | + |
| 167 | + _onMainMapMoved: function (e) { |
| 168 | + if (!this._miniMapMoving) { |
| 169 | + this._mainMapMoving = true; |
| 170 | + this._miniMap.setView(this._mainMap.getCenter(), this._decideZoom(true)); |
| 171 | + this._setDisplay(this._decideMinimized()); |
| 172 | + } else { |
| 173 | + this._miniMapMoving = false; |
| 174 | + } |
| 175 | + this._aimingRect.setBounds(this._mainMap.getBounds()); |
| 176 | + }, |
| 177 | + |
| 178 | + _onMainMapMoving: function (e) { |
| 179 | + this._aimingRect.setBounds(this._mainMap.getBounds()); |
| 180 | + }, |
| 181 | + |
| 182 | + _onMiniMapMoveStarted:function (e) { |
| 183 | + var lastAimingRect = this._aimingRect.getBounds(); |
| 184 | + var sw = this._miniMap.latLngToContainerPoint(lastAimingRect.getSouthWest()); |
| 185 | + var ne = this._miniMap.latLngToContainerPoint(lastAimingRect.getNorthEast()); |
| 186 | + this._lastAimingRectPosition = {sw:sw,ne:ne}; |
| 187 | + }, |
| 188 | + |
| 189 | + _onMiniMapMoving: function (e) { |
| 190 | + if (!this._mainMapMoving && this._lastAimingRectPosition) { |
| 191 | + this._shadowRect.setBounds(new L.LatLngBounds(this._miniMap.containerPointToLatLng(this._lastAimingRectPosition.sw),this._miniMap.containerPointToLatLng(this._lastAimingRectPosition.ne))); |
| 192 | + this._shadowRect.setStyle({opacity:1,fillOpacity:0.3}); |
| 193 | + } |
| 194 | + }, |
| 195 | + |
| 196 | + _onMiniMapMoved: function (e) { |
| 197 | + if (!this._mainMapMoving) { |
| 198 | + this._miniMapMoving = true; |
| 199 | + this._mainMap.setView(this._miniMap.getCenter(), this._decideZoom(false)); |
| 200 | + this._shadowRect.setStyle({opacity:0,fillOpacity:0}); |
| 201 | + } else { |
| 202 | + this._mainMapMoving = false; |
| 203 | + } |
| 204 | + }, |
| 205 | + |
| 206 | + _decideZoom: function (fromMaintoMini) { |
| 207 | + if (!this.options.zoomLevelFixed) { |
| 208 | + if (fromMaintoMini) |
| 209 | + return this._mainMap.getZoom() + this.options.zoomLevelOffset; |
| 210 | + else { |
| 211 | + var currentDiff = this._miniMap.getZoom() - this._mainMap.getZoom(); |
| 212 | + var proposedZoom = this._miniMap.getZoom() - this.options.zoomLevelOffset; |
| 213 | + var toRet; |
| 214 | + |
| 215 | + if (currentDiff > this.options.zoomLevelOffset && this._mainMap.getZoom() < this._miniMap.getMinZoom() - this.options.zoomLevelOffset) { |
| 216 | + //This means the miniMap is zoomed out to the minimum zoom level and can't zoom any more. |
| 217 | + if (this._miniMap.getZoom() > this._lastMiniMapZoom) { |
| 218 | + //This means the user is trying to zoom in by using the minimap, zoom the main map. |
| 219 | + toRet = this._mainMap.getZoom() + 1; |
| 220 | + //Also we cheat and zoom the minimap out again to keep it visually consistent. |
| 221 | + this._miniMap.setZoom(this._miniMap.getZoom() -1); |
| 222 | + } else { |
| 223 | + //Either the user is trying to zoom out past the mini map's min zoom or has just panned using it, we can't tell the difference. |
| 224 | + //Therefore, we ignore it! |
| 225 | + toRet = this._mainMap.getZoom(); |
| 226 | + } |
| 227 | + } else { |
| 228 | + //This is what happens in the majority of cases, and always if you configure the min levels + offset in a sane fashion. |
| 229 | + toRet = proposedZoom; |
| 230 | + } |
| 231 | + this._lastMiniMapZoom = this._miniMap.getZoom(); |
| 232 | + return toRet; |
| 233 | + } |
| 234 | + } else { |
| 235 | + if (fromMaintoMini) |
| 236 | + return this.options.zoomLevelFixed; |
| 237 | + else |
| 238 | + return this._mainMap.getZoom(); |
| 239 | + } |
| 240 | + }, |
| 241 | + |
| 242 | + _decideMinimized: function () { |
| 243 | + if (this._userToggledDisplay) { |
| 244 | + return this._minimized; |
| 245 | + } |
| 246 | + |
| 247 | + if (this.options.autoToggleDisplay) { |
| 248 | + if (this._mainMap.getBounds().contains(this._miniMap.getBounds())) { |
| 249 | + return true; |
| 250 | + } |
| 251 | + return false; |
| 252 | + } |
| 253 | + |
| 254 | + return this._minimized; |
| 255 | + } |
| 256 | +}); |
| 257 | + |
| 258 | +L.Map.mergeOptions({ |
| 259 | + miniMapControl: false |
| 260 | +}); |
| 261 | + |
| 262 | +L.Map.addInitHook(function () { |
| 263 | + if (this.options.miniMapControl) { |
| 264 | + this.miniMapControl = (new L.Control.MiniMap()).addTo(this); |
| 265 | + } |
| 266 | +}); |
| 267 | + |
| 268 | +L.control.minimap = function (options) { |
| 269 | + return new L.Control.MiniMap(options); |
| 270 | +}; |
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