box = new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.RegularPolygon, {
handlerOptions: {
- keyMask: OpenLayers.Handler.MOD_CTRL,
sides: 4,
snapAngle: 90,
irregular: true,
persist: true,
- callbacks: { done: boxComplete }
+ callbacks: { done: endDrag }
}
});
map.addControl(box);
- box.activate();
-
map.events.register("moveend", map, mapMoved);
openSidebar({ onclose: stopExport });
- updateRegion(map.getExtent());
+ setBounds(map.getExtent());
if (map.baseLayer.name == "Mapnik") {
$("format_mapnik").checked = true;
$("viewanchor").className = "active";
$("exportanchor").className = "";
+ clearBox();
map.events.unregister("moveend", map, mapMoved);
- box.handler.clear();
map.removeLayer(vectors);
}
- function formatChanged() {
- if ($("format_osm").checked) {
- $("export_osm").style.display = "inline";
- } else {
- $("export_osm").style.display = "none";
- }
-
- if ($("format_mapnik").checked) {
- $("mapnik_scale").value = roundScale(map.getScale());
- $("export_mapnik").style.display = "inline";
- } else {
- $("export_mapnik").style.display = "none";
- }
-
- if ($("format_osmarender").checked) {
- var zoom = Math.min(map.getZoom(), maxOsmarenderZoom());
-
- $("osmarender_zoom").options.selectedIndex = zoom - 4;
- $("export_osmarender").style.display = "inline";
- } else {
- $("export_osmarender").style.display = "none";
- }
- }
-
- $("format_osm").onclick = formatChanged;
- $("format_mapnik").onclick = formatChanged;
- $("format_osmarender").onclick = formatChanged;
-
function boundsChanged() {
var epsg4326 = new OpenLayers.Projection("EPSG:4326");
var bounds = new OpenLayers.Bounds($("minlon").value,
map.events.unregister("moveend", map, mapMoved);
map.zoomToExtent(bounds);
- box.handler.clear();
- box.handler.feature = new OpenLayers.Feature.Vector(bounds.toGeometry());
- box.handler.layer.addFeatures([box.handler.feature], [box.handler.style]);
- box.handler.layer.drawFeature(box.handler.feature, box.handler.style);
+ clearBox();
+ drawBox(bounds);
+
+ validateControls();
+ mapnikSizeChanged();
}
$("maxlat").onchange = boundsChanged;
$("maxlon").onchange = boundsChanged;
$("minlat").onchange = boundsChanged;
- function mapMoved() {
- updateRegion(map.getExtent());
- }
+ function startDrag() {
+ $("drag_box").innerHTML='Drag a box on the map to select an area';
+
+ clearBox();
+ box.activate();
+ };
+
+ $("drag_box").onclick = startDrag;
+
+ function endDrag(bbox) {
+ var bounds = bbox.getBounds();
- function boxComplete(box) {
map.events.unregister("moveend", map, mapMoved);
- updateRegion(box.getBounds());
+ setBounds(bounds);
+ drawBox(bounds);
+ box.deactivate();
+ validateControls();
+
+ $("drag_box").innerHTML = "Manually select a different area";
+ }
+
+ function mapMoved() {
+ setBounds(map.getExtent());
+ validateControls();
}
- function updateRegion(bounds) {
+ function setBounds(bounds) {
var epsg4326 = new OpenLayers.Projection("EPSG:4326");
var decimals = Math.pow(10, Math.floor(map.getZoom() / 3));
- bounds.transform(map.getProjectionObject(), epsg4326);
+ bounds = bounds.clone().transform(map.getProjectionObject(), epsg4326);
$("minlon").value = Math.round(bounds.left * decimals) / decimals;
$("minlat").value = Math.round(bounds.bottom * decimals) / decimals;
$("maxlon").value = Math.round(bounds.right * decimals) / decimals;
$("maxlat").value = Math.round(bounds.top * decimals) / decimals;
+ mapnikSizeChanged();
+ }
+
+ function clearBox() {
+ vectors.destroyFeatures();
+ }
+
+ function drawBox(bounds) {
+ var feature = new OpenLayers.Feature.Vector(bounds.toGeometry());
+
+ vectors.addFeatures(feature);
+ }
+
+ function validateControls() {
+ var bounds = new OpenLayers.Bounds($("minlon").value, $("minlat").value, $("maxlon").value, $("maxlat").value);
+
if (bounds.getWidth() * bounds.getHeight() > 0.25) {
$("format_osm").disabled = true;
$("format_osm").checked = false;
-
- formatChanged();
+ $("export_osm").style.display = "none";
} else {
$("format_osm").disabled = false;
}
-
- var max_zoom = maxOsmarenderZoom();
+
var max_scale = maxMapnikScale();
- $("max_scale").innerHTML = roundScale(max_scale);
+ if ($("format_mapnik").checked && $("mapnik_scale").value < max_scale) {
+ $("export_commit").disabled = true;
+ } else {
+ $("export_commit").disabled = false;
+ }
+
+ $("mapnik_max_scale").innerHTML = roundScale(max_scale);
+
+ var max_zoom = maxOsmarenderZoom();
for (var o = 0; o < $("osmarender_zoom").options.length; o++) {
var option = $("osmarender_zoom").options[o];
}
}
+ function formatChanged() {
+ if ($("format_osm").checked) {
+ $("export_osm").style.display = "inline";
+ } else {
+ $("export_osm").style.display = "none";
+ }
+
+ if ($("format_mapnik").checked) {
+ $("mapnik_scale").value = roundScale(map.getScale());
+ $("export_mapnik").style.display = "inline";
+ } else {
+ $("export_mapnik").style.display = "none";
+ }
+
+ if ($("format_osmarender").checked) {
+ var zoom = Math.min(map.getZoom(), maxOsmarenderZoom());
+
+ $("osmarender_zoom").options.selectedIndex = zoom - 4;
+ $("export_osmarender").style.display = "inline";
+ } else {
+ $("export_osmarender").style.display = "none";
+ }
+
+ validateControls();
+ }
+
+ $("format_osm").onclick = formatChanged;
+ $("format_mapnik").onclick = formatChanged;
+ $("format_osmarender").onclick = formatChanged;
+
function maxMapnikScale() {
var bounds = new OpenLayers.Bounds($("minlon").value, $("minlat").value, $("maxlon").value, $("maxlat").value);
var epsg4326 = new OpenLayers.Projection("EPSG:4326");
return Math.floor(Math.sqrt(bounds.getWidth() * bounds.getHeight() / 0.3136));
}
+ function mapnikImageSize(scale) {
+ var bounds = new OpenLayers.Bounds($("minlon").value, $("minlat").value, $("maxlon").value, $("maxlat").value);
+ var epsg4326 = new OpenLayers.Projection("EPSG:4326");
+ var epsg900913 = new OpenLayers.Projection("EPSG:900913");
+
+ bounds.transform(epsg4326, epsg900913);
+
+ return new OpenLayers.Size(Math.round(bounds.getWidth() / scale / 0.00028),
+ Math.round(bounds.getHeight() / scale / 0.00028));
+ }
+
function maxOsmarenderZoom() {
var bounds = new OpenLayers.Bounds($("minlon").value, $("minlat").value, $("maxlon").value, $("maxlat").value);
var xzoom = Math.LOG2E * Math.log(2000 * 1.40625 / bounds.getWidth());
return precision * Math.ceil(scale / precision);
}
- function validateScale() {
- if ($("mapnik_scale").value < maxMapnikScale()) {
- $("export_commit").disabled = true;
- } else {
- $("export_commit").disabled = false;
- }
+ function mapnikSizeChanged() {
+ var size = mapnikImageSize($("mapnik_scale").value);
+
+ $("mapnik_image_width").innerHTML = size.w;
+ $("mapnik_image_height").innerHTML = size.h;
+ }
+
+ function mapnikScaleChanged() {
+ mapnikSizeChanged();
+ validateControls();
}
- $("mapnik_scale").onchange = validateScale;
+ $("mapnik_scale").onchange = mapnikScaleChanged;
startExport();
EOJ
projects / rails.git / blobdiff