using System;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Net;

using SharpMap;

using SharpMap.Data.Providers;

using SharpMap.Layers;

using SharpMap.Styles;

using SharpMap.Utilities.Wfs;

using Point = GeoAPI.Geometries.Coordinate;

namespace WinFormSamples.Samples

{

public static class WfsSample

{

public static Map InitializeMap(float angle)

{

try

{

// WARNING

// This sample needs the GeoServer WFS running on your local machine.

// It uses the GeoServer default sample data. Installing and starting it is all you need to do

// http://docs.codehaus.org/display/GEOS/Download

// Sample by Peter Robineau

const string getCapabilitiesURI = "http://localhost:8080/geoserver/wfs";

const string serviceURI = "http://localhost:8080/geoserver/wfs";

Map map = new Map(new Size(600, 600));

map.MinimumZoom = 0.005;

map.BackColor = Color.White;

VectorLayer layer1 = new VectorLayer("States");

VectorLayer layer2 = new VectorLayer("SelectedStatesAndHousholds");

VectorLayer layer3 = new VectorLayer("New Jersey");

VectorLayer layer4 = new VectorLayer("Roads");

VectorLayer layer5 = new VectorLayer("Landmarks");

VectorLayer layer6 = new VectorLayer("Poi");

// Demo data from Geoserver 1.5.3 and Geoserver 1.6.0

WFS prov1 = new WFS(getCapabilitiesURI, "topp", "states", WFS.WFSVersionEnum.WFS1_0_0);

// Bypass 'GetCapabilities' and 'DescribeFeatureType', if you know all necessary metadata.

WfsFeatureTypeInfo featureTypeInfo = new WfsFeatureTypeInfo(serviceURI, "topp", null, "states",

"the_geom");

// 'WFS.WFSVersionEnum.WFS1_1_0' supported by Geoserver 1.6.x

WFS prov2 = new WFS(featureTypeInfo, WFS.WFSVersionEnum.WFS1_1_0);

// Bypass 'GetCapabilities' and 'DescribeFeatureType' again...

// It's possible to specify the geometry type, if 'DescribeFeatureType' does not...(.e.g 'GeometryAssociationType')

// This helps to accelerate the initialization process in case of unprecise geometry information.

WFS prov3 = new WFS(serviceURI, "topp", "http://www.openplans.org/topp", "states", "the_geom",

GeometryTypeEnum.MultiSurfacePropertyType, WFS.WFSVersionEnum.WFS1_1_0);

// Get data-filled FeatureTypeInfo after initialization of dataprovider (useful in Web Applications for caching metadata.

WfsFeatureTypeInfo info = prov1.FeatureTypeInfo;

// Use cached 'GetCapabilities' response of prov1 (featuretype hosted by same service).

// Compiled XPath expressions are re-used automatically!

// If you use a cached 'GetCapabilities' response make sure the data provider uses the same version of WFS as the one providing the cache!!!

WFS prov4 = new WFS(prov1.GetCapabilitiesCache, "tiger", "tiger_roads", WFS.WFSVersionEnum.WFS1_0_0);

WFS prov5 = new WFS(prov1.GetCapabilitiesCache, "tiger", "poly_landmarks", WFS.WFSVersionEnum.WFS1_0_0);

WFS prov6 = new WFS(prov1.GetCapabilitiesCache, "tiger", "poi", WFS.WFSVersionEnum.WFS1_0_0);

// Clear cache of prov1 - data providers do not have any cache, if they use the one of another data provider

prov1.GetCapabilitiesCache = null;

//Filters

IFilter filter1 = new PropertyIsEqualToFilter_FE1_1_0("STATE_NAME", "California");

IFilter filter2 = new PropertyIsEqualToFilter_FE1_1_0("STATE_NAME", "Vermont");

IFilter filter3 = new PropertyIsBetweenFilter_FE1_1_0("HOUSHOLD", "600000", "4000000");

IFilter filter4 = new PropertyIsLikeFilter_FE1_1_0("STATE_NAME", "New*");

// SelectedStatesAndHousholds: Green

OGCFilterCollection filterCollection1 = new OGCFilterCollection();

filterCollection1.AddFilter(filter1);

filterCollection1.AddFilter(filter2);

OGCFilterCollection filterCollection2 = new OGCFilterCollection();

filterCollection2.AddFilter(filter3);

filterCollection1.AddFilterCollection(filterCollection2);

filterCollection1.Junctor = OGCFilterCollection.JunctorEnum.Or;

prov2.OGCFilter = filterCollection1;

// Like-Filter('New*'): Bisque

prov3.OGCFilter = filter4;

// Layer Style

layer1.Style.Fill = new SolidBrush(Color.IndianRed); // States

layer2.Style.Fill = new SolidBrush(Color.Green); // SelectedStatesAndHousholds

layer3.Style.Fill = new SolidBrush(Color.Bisque); // e.g. New York, New Jersey,...

layer5.Style.Fill = new SolidBrush(Color.LightBlue);

// Labels

// Labels are collected when parsing the geometry. So there's just one 'GetFeature' call necessary.

// Otherwise (when calling twice for retrieving labels) there may be an inconsistent read...

// If a label property is set, the quick geometry option is automatically set to 'false'.

prov3.Label = "STATE_NAME";

LabelLayer layLabel = new LabelLayer("labels");

layLabel.DataSource = prov3;

layLabel.Enabled = true;

layLabel.LabelColumn = prov3.Label;

layLabel.Style = new LabelStyle();

layLabel.Style.CollisionDetection = false;

layLabel.Style.CollisionBuffer = new SizeF(5, 5);

layLabel.Style.ForeColor = Color.Black;

layLabel.Style.Font = new Font(FontFamily.GenericSerif, 10);

layLabel.MaxVisible = 90;

layLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center;

// Options

// Defaults: MultiGeometries: true, QuickGeometries: false, GetFeatureGETRequest: false

// Render with validation...

prov1.QuickGeometries = false;

// Important when connecting to an UMN MapServer

prov1.GetFeatureGETRequest = true;

// Ignore multi-geometries...

prov1.MultiGeometries = false;

// Quick geometries

// We need this option for prov2 since we have not passed a featuretype namespace

prov2.QuickGeometries = true;

prov4.QuickGeometries = true;

prov5.QuickGeometries = true;

prov6.QuickGeometries = true;

layer1.DataSource = prov1;

layer2.DataSource = prov2;

layer3.DataSource = prov3;

layer4.DataSource = prov4;

layer5.DataSource = prov5;

layer6.DataSource = prov6;

map.Layers.Add(layer1);

map.Layers.Add(layer2);

map.Layers.Add(layer3);

map.Layers.Add(layer4);

map.Layers.Add(layer5);

map.Layers.Add(layer6);

map.Layers.Add(layLabel);

map.Center = new Point(-74.0, 40.7);

map.Zoom = 10;

// Alternatively zoom closer

// demoMap.Zoom = 0.2;

Matrix mat = new Matrix();

mat.RotateAt(angle, map.WorldToImage(map.Center));

map.MapTransform = mat;

return map;

}

catch (WebException ex)

{

if ((ex.Message.Contains("(502) Bad Gateway")) ||

(ex.Message.Contains("Unable to connect to the remote server")))

{

throw new Exception(

"The Wfs sample threw an exception. You probably need to install the GeoServer WFS to your local machine. You can get it from here: http://docs.codehaus.org/display/GEOS/Download. The exception message was: " +

ex.Message);

}

else throw;

}

}

}

}