using System;

using System.Drawing.Drawing2D;

namespace WinFormSamples.Samples

{

public static class PostGisSample

{

public static SharpMap.Map InitializeMap(float angle)

{

//Initialize a new map of size 'imagesize'

SharpMap.Map map = new SharpMap.Map();

//Set up the countries layer

SharpMap.Layers.VectorLayer layCountries = new SharpMap.Layers.VectorLayer("Countries");

//Set the datasource to a shapefile in the App_data folder

layCountries.DataSource = new SharpMap.Data.Providers.PostGIS(Properties.Settings.Default.PostGisConnectionString, "countries", "ogc_fid");

//Set fill-style to green

layCountries.Style.Fill = new System.Drawing.SolidBrush(System.Drawing.Color.Green);

//Set the polygons to have a black outline

layCountries.Style.Outline = System.Drawing.Pens.Black;

layCountries.Style.EnableOutline = true;

//Set up a river layer

SharpMap.Layers.VectorLayer layRivers = new SharpMap.Layers.VectorLayer("Rivers");

//Set the datasource to a shapefile in the App_data folder

layRivers.DataSource = new SharpMap.Data.Providers.PostGIS(Properties.Settings.Default.PostGisConnectionString, "rivers", "ogc_fid");

//Define a blue 1px wide pen

layRivers.Style.Line = new System.Drawing.Pen(System.Drawing.Color.Blue, 1);

//Set up a river layer

SharpMap.Layers.VectorLayer layCities = new SharpMap.Layers.VectorLayer("Cities");

//Set the datasource to a shapefile in the App_data folder

layCities.DataSource = new SharpMap.Data.Providers.PostGIS(Properties.Settings.Default.PostGisConnectionString, "cities", "ogc_fid");

layCities.Style.SymbolScale = 0.8f;

layCities.MaxVisible = 40;

//Set up a country label layer

SharpMap.Layers.LabelLayer layLabel = new SharpMap.Layers.LabelLayer("Country labels")

{

DataSource = layCountries.DataSource,

Enabled = true,

LabelColumn = "Name",

MultipartGeometryBehaviour = SharpMap.Layers.LabelLayer.MultipartGeometryBehaviourEnum.Largest,

LabelFilter = SharpMap.Rendering.LabelCollisionDetection.ThoroughCollisionDetection,

PriorityColumn = "popdens",

Style = new SharpMap.Styles.LabelStyle()

{

ForeColor = System.Drawing.Color.White,

Font = new System.Drawing.Font(System.Drawing.FontFamily.GenericSerif, 12),

BackColor = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(128, 255, 0, 0)),

HorizontalAlignment = SharpMap.Styles.LabelStyle.HorizontalAlignmentEnum.Center,

CollisionDetection = true,

MaxVisible = 90,

MinVisible = 30

}

};

//Set up a city label layer

SharpMap.Layers.LabelLayer layCityLabel = new SharpMap.Layers.LabelLayer("City labels")

{

DataSource = layCities.DataSource,

Enabled = true,

LabelColumn = "name",

PriorityColumn = "population",

PriorityDelegate = delegate(SharpMap.Data.FeatureDataRow fdr)

{

Int32 retVal = 10000000 * (Int32)( (String)fdr["capital"] == "Y" ? 1 : 0 );

return retVal + Convert.ToInt32(fdr["population"]);

},

TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias,

SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias,

LabelFilter = SharpMap.Rendering.LabelCollisionDetection.ThoroughCollisionDetection,

Style = new SharpMap.Styles.LabelStyle()

{

ForeColor = System.Drawing.Color.White,

Font = new System.Drawing.Font(System.Drawing.FontFamily.GenericSerif, 11),

MaxVisible = layLabel.MinVisible,

HorizontalAlignment = SharpMap.Styles.LabelStyle.HorizontalAlignmentEnum.Left,

VerticalAlignment = SharpMap.Styles.LabelStyle.VerticalAlignmentEnum.Bottom,

Offset = new System.Drawing.PointF(3, 3),

Halo = new System.Drawing.Pen(System.Drawing.Color.Black, 2),

CollisionDetection = true

}

};

//Add the layers to the map object.

//The order we add them in are the order they are drawn, so we add the rivers last to put them on top

map.Layers.Add(layCountries);

map.Layers.Add(layRivers);

map.Layers.Add(layCities);

map.Layers.Add(layLabel);

map.Layers.Add(layCityLabel);

//limit the zoom to 360 degrees width

map.MaximumZoom = 360;

map.BackColor = System.Drawing.Color.LightBlue;

map.ZoomToExtents(); // = 360;

map.Center = new GeoAPI.Geometries.Coordinate(0, 0);

Matrix mat = new Matrix();

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

map.MapTransform = mat;

return map;

}

}

}