SharpMap/Examples/ExampleCodeSnippets/Theming.cs at main · SharpMap/SharpMap · GitHub

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namespace ExampleCodeSnippets

{

using cd = CreatingData;

public class SymbolRotationTheming

{

/// <summary>

/// Name of the column, which contains the rotation angle in degrees [0°, 360°]

/// </summary>

public System.String StyleRotationColumn { get; set; }

/// <summary>

/// Default vector style from which parts are to be modified

/// </summary>

public SharpMap.Styles.VectorStyle DefaultStyle { get; set; }

/// <summary>

/// Creates an instance of this class

/// </summary>

/// <param name="styleRotationColumn">Name of the column, which contains the rotation angle in degrees [0°, 360°]</param>

public SymbolRotationTheming(System.String styleRotationColumn)

:this(styleRotationColumn, new SharpMap.Styles.VectorStyle())

{

}

/// <summary>

/// Creates an instance of this class

/// </summary>

/// <param name="styleRotationColumn">Name of the column, which contains the rotation angle in degrees [0°, 360°]</param>

/// <param name="defaultStyle">Default vector style from which parts are to be modified</param>

public SymbolRotationTheming(System.String styleRotationColumn, SharpMap.Styles.VectorStyle defaultStyle)

{

StyleRotationColumn = styleRotationColumn;

DefaultStyle = defaultStyle;

}

private static SharpMap.Styles.VectorStyle CloneStyle(SharpMap.Styles.VectorStyle styleToClone)

{

SharpMap.Styles.VectorStyle style =

new SharpMap.Styles.VectorStyle

{

Enabled = styleToClone.Enabled,

MinVisible = styleToClone.MinVisible,

MaxVisible = styleToClone.MaxVisible,

Line = styleToClone.Line.Clone() as System.Drawing.Pen,

Fill = styleToClone.Fill.Clone() as System.Drawing.Brush,

Outline = styleToClone.Outline.Clone() as System.Drawing.Pen,

EnableOutline = styleToClone.EnableOutline,

Symbol = styleToClone.Symbol.Clone() as System.Drawing.Bitmap,

SymbolOffset = styleToClone.SymbolOffset,

SymbolRotation = styleToClone.SymbolRotation,

SymbolScale = styleToClone.SymbolScale

};

return style;

}

public SharpMap.Styles.VectorStyle GetRotatedSymol(SharpMap.Data.FeatureDataRow row)

{

if (!System.String.IsNullOrEmpty(StyleRotationColumn))

try

{

SharpMap.Styles.VectorStyle dataStyle = CloneStyle(DefaultStyle);

dataStyle.SymbolRotation = System.Convert.ToSingle(row[StyleRotationColumn]);

return dataStyle;

}

catch { }

return null;

}

public class SymbolFromFeatureDataRowTheming

{

/// <summary>

/// Name of the column, which contains the rotation angle in degrees [0°, 360°]

/// </summary>

public System.String SymbolColumn { get; set; }

/// <summary>

/// Default vector style from which parts are to be modified

/// </summary>

public SharpMap.Styles.VectorStyle DefaultStyle { get; set; }

/// <summary>

/// Creates an instance of this class

/// </summary>

/// <param name="symbolColumn">Name of the column, which contains the symbol</param>

public SymbolFromFeatureDataRowTheming(System.String symbolColumn)

: this(symbolColumn, new SharpMap.Styles.VectorStyle())

{

}

/// <summary>

/// Creates an instance of this class

/// </summary>

/// <param name="styleRotationColumn">Name of the column, which contains the symbol</param>

/// <param name="defaultStyle">Default vector style from which parts are to be modified</param>

public SymbolFromFeatureDataRowTheming(System.String styleRotationColumn, SharpMap.Styles.VectorStyle defaultStyle)

{

SymbolColumn = styleRotationColumn;

DefaultStyle = defaultStyle;

}

private static SharpMap.Styles.VectorStyle CloneStyle(SharpMap.Styles.VectorStyle styleToClone)

{

SharpMap.Styles.VectorStyle style =

new SharpMap.Styles.VectorStyle

{

Enabled = styleToClone.Enabled,

MinVisible = styleToClone.MinVisible,

MaxVisible = styleToClone.MaxVisible,

Line = styleToClone.Line.Clone() as System.Drawing.Pen,

Fill = styleToClone.Fill.Clone() as System.Drawing.Brush,

Outline = styleToClone.Outline.Clone() as System.Drawing.Pen,

EnableOutline = styleToClone.EnableOutline,

Symbol = styleToClone.Symbol.Clone() as System.Drawing.Bitmap,

SymbolOffset = styleToClone.SymbolOffset,

SymbolRotation = styleToClone.SymbolRotation,

SymbolScale = styleToClone.SymbolScale

};

return style;

}

public SharpMap.Styles.VectorStyle GetRotatedSymol(SharpMap.Data.FeatureDataRow row)

{

if (!System.String.IsNullOrEmpty(SymbolColumn))

try

{

SharpMap.Styles.VectorStyle dataStyle = CloneStyle(DefaultStyle);

if (!row.IsNull(SymbolColumn))

{

dataStyle.Symbol = new System.Drawing.Bitmap(

new System.IO.MemoryStream((byte[]) row[SymbolColumn]));

}

return dataStyle;

}

catch { }

return null;

}

[NUnit.Framework.TestFixture]

public class SymbolRotationThemingTest

{

private static readonly System.Random _randomNumberGenerator = new System.Random();

static System.Double[] GetRandomOrdinates(System.Int32 size, System.Double min, System.Double max)

{

System.Double[] arr = new System.Double[size];

System.Double width = max - min;

for(System.Int32 i = 0; i < size; i++)

{

System.Double randomValue = _randomNumberGenerator.NextDouble();

arr[i] = min + randomValue*width;

}

return arr;

}

[NUnit.Framework.Test]

public void TestSymbolRotationTheming()

{

//Create a map

SharpMap.Map map = new SharpMap.Map(new System.Drawing.Size(720,360));

//Create some random sample data

SharpMap.Data.FeatureDataTable fdt =

cd.CreatePointFeatureDataTableFromArrays(cd.GetRandomOrdinates(80, -180, 180),

cd.GetRandomOrdinates(80, -90, 90), null);

//Add rotation column and fill with random rotation values

fdt.Columns.Add("Rotation", typeof (System.Double));

foreach (SharpMap.Data.FeatureDataRow row in fdt.Rows)

row["Rotation"] = _randomNumberGenerator.NextDouble()*360d;

//Create layer and datasource

SharpMap.Layers.VectorLayer vl = new SharpMap.Layers.VectorLayer("Points", new SharpMap.Data.Providers.GeometryFeatureProvider(fdt));

//Create default style

SharpMap.Styles.VectorStyle defaultStyle = new SharpMap.Styles.VectorStyle();

defaultStyle.Symbol = new System.Drawing.Bitmap(@"..\..\..\DemoWinForm\Resources\flag.png");

defaultStyle.SymbolScale = 0.5f;

//Create theming class and apply to layer

SymbolRotationTheming srt = new SymbolRotationTheming("Rotation", defaultStyle);

vl.Theme = new SharpMap.Rendering.Thematics.CustomTheme(srt.GetRotatedSymol);

map.Layers.Add(vl);

map.ZoomToExtents();

System.Drawing.Image mapImage = map.GetMap();

mapImage.Save("SymbolRotation.bmp");

}

[NUnit.Framework.TestFixture]

public class SymbolFromFeatureDataRowTest

{

//private static readonly System.Random _randomNumberGenerator = new System.Random();

//static System.Double[] GetRandomOrdinates(System.Int32 size, System.Double min, System.Double max)

//{

// System.Double[] arr = new System.Double[size];

// System.Double width = max - min;

// for (System.Int32 i = 0; i < size; i++)

// {

// System.Double randomValue = _randomNumberGenerator.NextDouble();

// arr[i] = min + randomValue * width;

// }

// return arr;

//}

[NUnit.Framework.Test]

public void TestSymbolSelectionTheming()

{

//Create a map

SharpMap.Map map = new SharpMap.Map(new System.Drawing.Size(720, 360));

//Create some random sample data

SharpMap.Data.FeatureDataTable fdt =

cd.CreatePointFeatureDataTableFromArrays(cd.GetRandomOrdinates(80, -180, 180),

cd.GetRandomOrdinates(80, -90, 90), null);

//Add rotation column and fill with random rotation values

fdt.Columns.Add("Symbol", typeof(System.Byte[]));

foreach (SharpMap.Data.FeatureDataRow row in fdt.Rows)

row["Symbol"] = RandomSymbol((int)System.Math.Floor(cd.RandomNumberGenerator.NextDouble() * 360d));

//Create layer and datasource

SharpMap.Layers.VectorLayer vl = new SharpMap.Layers.VectorLayer("Points", new SharpMap.Data.Providers.GeometryFeatureProvider(fdt));

//Create default style

SharpMap.Styles.VectorStyle defaultStyle = new SharpMap.Styles.VectorStyle();

defaultStyle.Symbol = new System.Drawing.Bitmap(@"..\..\..\DemoWinForm\Resources\flag.png");

defaultStyle.SymbolScale = 0.5f;

//Create theming class and apply to layer

SymbolFromFeatureDataRowTheming srt = new SymbolFromFeatureDataRowTheming("Symbol", defaultStyle);

vl.Theme = new SharpMap.Rendering.Thematics.CustomTheme(srt.GetRotatedSymol);

map.Layers.Add(vl);

map.ZoomToExtents();

System.Drawing.Image mapImage = map.GetMap();

mapImage.Save("SymbolFromFDR.bmp");

}

private byte[] RandomSymbol(int number)

{

number = number%360;

string text ="";

System.Drawing.Brush brush = null;

if (number < 60)

return null;

if (number < 120)

{

text = "<120";

brush = System.Drawing.Brushes.DarkGreen;

}

else if(number < 240)

{

text = number.ToString();

brush = System.Drawing.Brushes.Orange;

}

else

{

text = ">240";

brush = System.Drawing.Brushes.Red;

}

System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(120, 60);

System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp);

System.Drawing.RectangleF size = new System.Drawing.RectangleF(0f, 0f, 120f, 60f);

g.FillRectangle(System.Drawing.Brushes.White, size);

var sf = new System.Drawing.StringFormat(System.Drawing.StringFormatFlags.NoWrap)

{Alignment = System.Drawing.StringAlignment.Center};

g.DrawString(text, new System.Drawing.Font("Arial", 24), brush, size, sf);

g.Flush();

g.Dispose();

var ms = new System.IO.MemoryStream();

bmp.MakeTransparent(System.Drawing.Color.White);

bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);

return ms.ToArray();

}

public class TestExternalData

{

public void DoTest()

{

SharpMap.Data.Providers.ShapeFile sf = new SharpMap.Data.Providers.ShapeFile("cities.shp");

SharpMap.Data.FeatureDataSet fds = new SharpMap.Data.FeatureDataSet();

sf.ExecuteIntersectionQuery(sf.GetExtents(), fds);

SharpMap.Data.Providers.GeometryFeatureProvider gfp =

new SharpMap.Data.Providers.GeometryFeatureProvider(fds.Tables[0]);

System.Data.DataTable dt = new System.Data.DataTable("external");

dt.Columns.Add("city", typeof (string));

dt.Columns.Add("males", typeof (int));

dt.Columns.Add("females", typeof (int));

}

SharpMap/Examples/ExampleCodeSnippets/Theming.cs at main · SharpMap/SharpMap · GitHub

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