var vectors; var box; var markerLayer; var markerControl; function startExport() { vectors = new OpenLayers.Layer.Vector("Vector Layer", { displayInLayerSwitcher: false }); map.addLayer(vectors); box = new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.RegularPolygon, { handlerOptions: { sides: 4, snapAngle: 90, irregular: true, persist: true } }); box.handler.callbacks.done = endDrag; map.addControl(box); map.events.register("moveend", map, mapMoved); map.events.register("changebaselayer", map, htmlUrlChanged); $("#sidebar_title").html("<%=j t 'export.start_rjs.export' %>"); $("#sidebar_content").html("<%=j render :partial => "sidebar" %>"); $("#maxlat").change(boundsChanged); $("#minlon").change(boundsChanged); $("#maxlon").change(boundsChanged); $("#minlat").change(boundsChanged); $("#drag_box").click(startDrag); $("#add_marker").click(startMarker); $("#format_osm").click(formatChanged); $("#format_mapnik").click(formatChanged); $("#format_osmarender").click(formatChanged); $("#format_html").click(formatChanged); $("#mapnik_scale").change(mapnikSizeChanged); openSidebar({ onclose: stopExport }); if (map.baseLayer.name == "Mapnik") { $("#format_mapnik").prop("checked", true); } else if (map.baseLayer.name == "Osmarender") { $("#format_osmarender").prop("checked", true); } formatChanged(); setBounds(map.getExtent()); $("#viewanchor").removeClass("active"); $("#exportanchor").addClass("active"); } function stopExport() { $("#viewanchor").addClass("active"); $("#exportanchor").removeClass("active"); clearBox(); clearMarker(); map.events.unregister("moveend", map, mapMoved); map.events.unregister("changebaselayer", map, htmlUrlChanged); map.removeLayer(vectors); } function boundsChanged() { var epsg4326 = new OpenLayers.Projection("EPSG:4326"); var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val()); bounds.transform(epsg4326, map.getProjectionObject()); map.events.unregister("moveend", map, mapMoved); map.zoomToExtent(bounds); clearBox(); drawBox(bounds); validateControls(); mapnikSizeChanged(); } function startDrag() { $("#drag_box").html("<%=j t 'export.start_rjs.drag_a_box' %>"); clearBox(); box.activate(); }; function endDrag(bbox) { var bounds = bbox.getBounds(); map.events.unregister("moveend", map, mapMoved); setBounds(bounds); drawBox(bounds); box.deactivate(); validateControls(); $("#drag_box").html("<%=j t 'export.start_rjs.manually_select' %>"); } function startMarker() { $("#add_marker").html("<%=j t 'export.start_rjs.click_add_marker' %>"); if (!markerLayer) { markerLayer = new OpenLayers.Layer.Vector("",{ displayInLayerSwitcher: false, style: { externalGraphic: OpenLayers.Util.getImagesLocation() + "marker.png", graphicXOffset: -10.5, graphicYOffset: -25, graphicWidth: 21, graphicHeight: 25 } }); map.addLayer(markerLayer); markerControl = new OpenLayers.Control.DrawFeature(markerLayer, OpenLayers.Handler.Point); map.addControl(markerControl); markerLayer.events.on({ "featureadded": endMarker }); } markerLayer.destroyFeatures(); markerControl.activate(); return false; } function endMarker(event) { markerControl.deactivate(); $("#add_marker").html("<%=j t 'export.start_rjs.change_marker' %>"); $("#marker_inputs").show(); var epsg4326 = new OpenLayers.Projection("EPSG:4326"); var epsg900913 = new OpenLayers.Projection("EPSG:900913"); var geom = event.feature.geometry.clone().transform(epsg900913, epsg4326); $("#marker_lon").val(geom.x.toFixed(5)); $("#marker_lat").val(geom.y.toFixed(5)); htmlUrlChanged(); } function clearMarker() { $("#marker_lon").val(""); $("#marker_lat").val(""); $("#marker_inputs").hide(); $("#add_marker").html("<%=j t 'export.start_rjs.add_marker' %>"); if (markerLayer) { markerControl.destroy(); markerLayer.destroy(); markerLayer = null; markerControl = null; } } function mapMoved() { setBounds(map.getExtent()); validateControls(); } function setBounds(bounds) { var epsg4326 = new OpenLayers.Projection("EPSG:4326"); var decimals = Math.pow(10, Math.floor(map.getZoom() / 3)); bounds = bounds.clone().transform(map.getProjectionObject(), epsg4326); $("#minlon").val(Math.round(bounds.left * decimals) / decimals); $("#minlat").val(Math.round(bounds.bottom * decimals) / decimals); $("#maxlon").val(Math.round(bounds.right * decimals) / decimals); $("#maxlat").val(Math.round(bounds.top * decimals) / decimals); mapnikSizeChanged(); htmlUrlChanged(); } function clearBox() { vectors.destroyFeatures(); } function drawBox(bounds) { var feature = new OpenLayers.Feature.Vector(bounds.toGeometry()); vectors.addFeatures(feature); } function validateControls() { var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val()); if (bounds.getWidth() * bounds.getHeight() > <%= MAX_REQUEST_AREA %>) { $("#export_osm_too_large").show(); } else { $("#export_osm_too_large").hide(); } var max_scale = maxMapnikScale(); if ($("#format_osm").prop("checked") && bounds.getWidth() * bounds.getHeight() > <%= MAX_REQUEST_AREA %>) { $("#export_commit").prop("disabled", true); } else if ($("#format_mapnik").prop("checked") && $("#mapnik_scale").val() < max_scale) { $("#export_commit").prop("disabled", true); } else { $("#export_commit").prop("disabled", false); } $("#mapnik_max_scale").html(roundScale(max_scale)); var max_zoom = maxOsmarenderZoom(); $("#osmarender_zoom option").each(function () { if ($(this).val() > max_zoom) { $(this).prop("disabled", true); } else { $(this).prop("disabled", false); } }); if ($("#osmarender_zoom option").is(":disabled:selected")) { $("#osmarender_zoom option").filter(":enabled").last().prop("selected", true); } } function htmlUrlChanged() { var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val()); var layerName = map.baseLayer.keyid; var url = "http://<%= SERVER_URL %>/export/embed.html?bbox=" + bounds.toBBOX() + "&layer=" + layerName; var markerUrl = ""; if ($("#marker_lat").val() && $("#marker_lon").val()) { markerUrl = "&mlat=" + $("#marker_lat").val() + "&mlon=" + $("#marker_lon").val(); url += "&marker=" + $("#marker_lat").val() + "," + $("#marker_lon").val(); } var html = ''; // Create "larger map" link var center = bounds.getCenterLonLat(); var epsg4326 = new OpenLayers.Projection("EPSG:4326"); var epsg900913 = new OpenLayers.Projection("EPSG:900913"); bounds.transform(epsg4326, epsg900913); var zoom = map.getZoomForExtent(bounds); var layers = getMapLayers(); html += '
'+"<%= html_escape_unicode(I18n.t('export.start_rjs.view_larger_map')) %>"+''; $("#export_html_text").val(html); if ($("#format_html").prop("checked")) { $("#export_html_text").prop("selected", true); } } function formatChanged() { $("#export_commit").show(); if ($("#format_osm").prop("checked")) { $("#export_osm").show(); } else { $("#export_osm").hide(); } if ($("#format_mapnik").prop("checked")) { $("#mapnik_scale").val(roundScale(map.getScale())); $("#export_mapnik").show(); } else { $("#export_mapnik").hide(); } if ($("#format_osmarender").prop("checked")) { var zoom = Math.min(map.getZoom(), maxOsmarenderZoom()); $("#osmarender_zoom option[value=" + zoom + "]").prop("selected", true); $("#export_osmarender").show(); } else { $("#export_osmarender").hide(); } if ($("#format_html").prop("checked")) { $("#export_html").show(); $("#export_commit").hide(); $("#export_html_text").prop("selected", true); } else { $("#export_html").hide(); clearMarker(); } validateControls(); } function maxMapnikScale() { var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val()); var epsg4326 = new OpenLayers.Projection("EPSG:4326"); var epsg900913 = new OpenLayers.Projection("EPSG:900913"); bounds.transform(epsg4326, epsg900913); return Math.floor(Math.sqrt(bounds.getWidth() * bounds.getHeight() / 0.3136)); } function mapnikImageSize(scale) { var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val()); var epsg4326 = new OpenLayers.Projection("EPSG:4326"); var epsg900913 = new OpenLayers.Projection("EPSG:900913"); bounds.transform(epsg4326, epsg900913); return new OpenLayers.Size(Math.round(bounds.getWidth() / scale / 0.00028), Math.round(bounds.getHeight() / scale / 0.00028)); } function maxOsmarenderZoom() { var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val()); var xzoom = Math.LOG2E * Math.log(2000 * 1.40625 / bounds.getWidth()); var ymin = bounds.bottom * Math.PI / 180; var ymax = bounds.top * Math.PI / 180; var yzoom = Math.LOG2E * (Math.log(2000 * 2 * Math.PI) - Math.log(Math.log((Math.tan(ymax) + 1 / Math.cos(ymax)) / (Math.tan(ymin) + 1 / Math.cos(ymin))))) return Math.min(Math.floor(Math.min(xzoom, yzoom)), 17); } function roundScale(scale) { var precision = 5 * Math.pow(10, Math.floor(Math.LOG10E * Math.log(scale)) - 2); return precision * Math.ceil(scale / precision); } function mapnikSizeChanged() { var size = mapnikImageSize($("#mapnik_scale").val()); $("#mapnik_image_width").html(size.w); $("#mapnik_image_height").html(size.h); validateControls(); } startExport();