});
var SYP = {
- Settings: {
- MARKER_ICON: "media/marker-normal.png",
- MARKER_SELECT_ICON: "media/marker-selected.png",
- MARKER_HEIGHT: 25
+ Markers: {
+ ICON: "media/marker-normal.png",
+ SELECT_ICON: "media/marker-selected.png",
+ HEIGHT: 25
},
map: null,
this.selectControl.activate();
if (!this.map.getCenter()) {
- var centerBounds = new OpenLayers.Bounds();
-
- var mapProj = this.map.getProjectionObject();
- var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
-
- var bottomLeft = new OpenLayers.LonLat(sypOrig[0],sypOrig[1]);
- bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
- var topRight = new OpenLayers.LonLat(sypOrig[2],sypOrig[3])
- topRight = topRight.transform(sypOrigProj, mapProj);
-
- centerBounds.extend(bottomLeft);
- centerBounds.extend(topRight);
- this.map.zoomToExtent(centerBounds);
+ this.map.setCenter(new OpenLayers.LonLat(0, 0), 0);
}
},
createDataLayer: function(map) {
var defaultStyle = new OpenLayers.Style({
- externalGraphic: this.Settings.MARKER_ICON,
+ externalGraphic: this.Markers.ICON,
graphicHeight: "${height}"
}, {
context: {
height: function(feature) {
- var defaultHeight = SYP.Settings.MARKER_HEIGHT || 32;
+ var defaultHeight = SYP.Markers.HEIGHT || 32;
var increase = 4 * (feature.attributes.count - 1);
return Math.min(defaultHeight + increase, 50);
}
}
});
var selectStyle = new OpenLayers.Style({
- externalGraphic: this.Settings.MARKER_SELECT_ICON,
- graphicHeight: this.Settings.MARKER_HEIGHT || 32
+ externalGraphic: this.Markers.SELECT_ICON,
+ graphicHeight: this.Markers.HEIGHT || 32
});
var styleMap = new OpenLayers.StyleMap (
{"default": defaultStyle,
format: OpenLayers.Format.KML,
projection: this.map.displayProjection,
eventListeners: { scope: this,
- loadend: this.checkForFeatures
+ loadend: this.dataLayerEndLoad
}
});
return control;
},
+ dataLayerEndLoad: function() {
+ if (!this.checkForFeatures()) {
+ return;
+ }
+
+ var map = this.map;
+ if (map.getControlsByClass("OpenLayers.Control.ArgParser")[0].lat
+ == undefined) { // map center was not set in ArgParser control.
+ var orig = this.Utils.mbr (this.dataLayer);
+ var centerBounds = new OpenLayers.Bounds();
+
+ var mapProj = map.getProjectionObject();
+ var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
+
+ var bottomLeft = new OpenLayers.LonLat(orig[0],orig[1]);
+ bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
+ var topRight = new OpenLayers.LonLat(orig[2],orig[3])
+ topRight = topRight.transform(sypOrigProj, mapProj);
+
+ centerBounds.extend(bottomLeft);
+ centerBounds.extend(topRight);
+ map.zoomToExtent(centerBounds);
+ }
+ },
+
checkForFeatures: function() {
var features = this.dataLayer.features;
if (features.length == 0) {
var message = SypStrings.noImageRegistered;
this.Utils.displayUserMessage(message, "warn");
}
+ return !!features.length;
},
createPopup: function(position, contentHTML) {
var popup = feature.popup;
var popupPos = null;
- if (sypPopupNearFeature) {
+ if (sypSettings.popupNearfeature) {
popupPos = feature.geometry.getBounds().getCenterLonLat();
} else {
popupPos = SYP.Utils.brCorner(map, 8);
corner = map.getLonLatFromPixel(cornerAsPx);
return corner;
},
+
+ /* minimum bounds rectangle containing all feature locations.
+ * FIXME: if two features are close, but separated by 180th meridian,
+ * their mbr will span the whole earth. Actually, 179° lon and -170°
+ * lon are considerated very near.
+ */
+ mbr: function (layer) {
+ var features = [];
+ var map = layer.map;
+
+ var mapProj = map.getProjectionObject();
+ var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
+
+ for (var i =0; i < layer.features.length; i++) {
+ if (layer.features[i].cluster) {
+ features = features.concat(layer.features[i].cluster);
+ } else {
+ features = features.concat(layer.features);
+ }
+ }
+
+ var minlon = 180;
+ var minlat = 88;
+ var maxlon = -180;
+ var maxlat = -88;
+
+ if (features.length == 0) {
+ // keep default values
+ } else if (features.length == 1) {
+ // in case there's only one feature, we show an area of at least
+ // 4 x 4 degrees
+ var pos = features[0].geometry.getBounds().getCenterLonLat().clone();
+ var lonlat = pos.transform(mapProj, sypOrigProj);
+
+ minlon = Math.max (lonlat.lon - 2, -180);
+ maxlon = Math.min (lonlat.lon + 2, 180);
+ minlat = Math.max (lonlat.lat - 2, -90);
+ maxlat = Math.min (lonlat.lat + 2, 90);
+ } else {
+ for (var i = 0; i < features.length; i++) {
+ var pos = features[i].geometry.getBounds().getCenterLonLat().clone();
+ var lonlat = pos.transform(mapProj, sypOrigProj);
+ minlon = Math.min (lonlat.lon, minlon);
+ minlat = Math.min (lonlat.lat, minlat);
+ maxlon = Math.max (lonlat.lon, maxlon);
+ maxlat = Math.max (lonlat.lat, maxlat);
+ }
+ }
+
+ return [minlon, minlat, maxlon, maxlat];
+
+ },
+
displayUserMessage: function(message, status) {
var div = document.getElementById('message');
while (div.firstChild)