X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/4368ba9f117651cdfbf1e21225a518a566130a2f..13289d404188bd397ee72852f66c415a2bb87066:/app/views/export/start.js.erb

diff --git a/app/views/export/start.js.erb b/app/views/export/start.js.erb
new file mode 100644
index 000000000..80e9de1d8
--- /dev/null
+++ b/app/views/export/start.js.erb
@@ -0,0 +1,347 @@
+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(), $("#maxlat").val());
+  var layerName = map.baseLayer.keyid;
+  var url = "http://<%= SERVER_URL %>/export/embed.html?bbox=" + bounds.toBBOX() + "&amp;layer=" + layerName;
+  var markerUrl = "";
+
+  if ($("#marker_lat").val() && $("#marker_lon").val()) {
+    markerUrl = "&amp;mlat=" + $("#marker_lat").val() + "&amp;mlon=" + $("#marker_lon").val();
+    url += "&amp;marker=" + $("#marker_lat").val() + "," + $("#marker_lon").val();
+  }
+
+  var html = '<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="'+url+'" style="border: 1px solid black"></iframe>';
+
+  // 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 += '<br /><small><a href="http://<%= SERVER_URL %>/?lat='+center.lat+'&amp;lon='+center.lon+'&amp;zoom='+zoom+'&amp;layers='+layers+markerUrl+'">'+"<%= html_escape_unicode(I18n.t('export.start_rjs.view_larger_map')) %>"+'</a></small>';
+
+  $("#export_html_text").val(html);
+
+  if ($("#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();