WpfRasterLayer¶

Namespace: ThinkGeo.UI.Wpf

This class allows you to view standard image types such as BMP, JPG, and PNG, using wpf classes such as BitmapSource

public class WpfRasterLayer : ThinkGeo.Core.RasterLayer

Inheritance Object → LayerBase → Layer → RasterLayer → WpfRasterLayer

Remarks:

This class handles all default supported image types of Windows. Any image can be opened by ImageView on Windows can also be opened by this class. As none of these types embed geographic information in them, you will need to ensure that the image file is always accompanied by a world file. The world file is text file that stores the associated geographic information we need to properly display the image along with your other feature data.

Properties¶

HasBoundingBox¶

This property checks to see if a Layer has a BoundingBox or not. If it has no BoundingBox, it will throw an exception when you call the GetBoundingBox() and GetFullExtent() APIs. In GdiPlusRasterLayer, we override this API and mark it as true.

public bool HasBoundingBox { get; }

Property Value¶

Boolean

Remarks:

The default implementation in the base class returns false.

ImagePathFilename¶

This property gets and sets the path and filename of the image file you want to use.

public string ImagePathFilename { get; set; }

Property Value¶

String
This property gets the path and filename of the image file you want to use.

Remarks:

This should be a complete path and filename for the image file.

ImageSource¶

public RasterSource ImageSource { get; protected set; }

Property Value¶

RasterSource

UpperThreshold¶

public double UpperThreshold { get; set; }

Property Value¶

Double

LowerThreshold¶

public double LowerThreshold { get; set; }

Property Value¶

Double

UpperScale¶

public double UpperScale { get; set; }

Property Value¶

Double

LowerScale¶

public double LowerScale { get; set; }

Property Value¶

Double

ScaleFactor¶

public double ScaleFactor { get; set; }

Property Value¶

Double

Projection¶

public Projection Projection { get; }

Property Value¶

Projection

RequestDrawingInterval¶

public TimeSpan RequestDrawingInterval { get; set; }

Property Value¶

TimeSpan

Name¶

public string Name { get; set; }

Property Value¶

String

IsOpen¶

public bool IsOpen { get; }

Property Value¶

Boolean

IsVisible¶

public bool IsVisible { get; set; }

Property Value¶

Boolean

DrawingTime¶

public TimeSpan DrawingTime { get; protected set; }

Property Value¶

TimeSpan

DrawingExceptionMode¶

public DrawingExceptionMode DrawingExceptionMode { get; set; }

Property Value¶

DrawingExceptionMode

Background¶

public GeoColor Background { get; set; }

Property Value¶

GeoColor

Transparency¶

public float Transparency { get; set; }

Property Value¶

Single

BlueTranslation¶

public float BlueTranslation { get; set; }

Property Value¶

Single

RedTranslation¶

public float RedTranslation { get; set; }

Property Value¶

Single

GreenTranslation¶

public float GreenTranslation { get; set; }

Property Value¶

Single

KeyColors¶

public Collection<GeoColor> KeyColors { get; }

Property Value¶

Collection<GeoColor>

IsNegative¶

public bool IsNegative { get; set; }

Property Value¶

Boolean

IsGrayscale¶

public bool IsGrayscale { get; set; }

Property Value¶

Boolean

ThreadSafe¶

public ThreadSafetyLevel ThreadSafe { get; set; }

Property Value¶

ThreadSafetyLevel

ColorMappings¶

public Dictionary<GeoColor, GeoColor> ColorMappings { get; }

Property Value¶

Dictionary<GeoColor, GeoColor>

WrappingMode¶

public WrappingMode WrappingMode { get; set; }

Property Value¶

WrappingMode

WrappingExtent¶

public RectangleShape WrappingExtent { get; set; }

Property Value¶

RectangleShape

Constructors¶

WpfRasterLayer()¶

This is a constructor for the class.

public WpfRasterLayer()

Remarks:

If you use this constructor, then you need to set the PathFilename property manually before using the layer.

WpfRasterLayer(String)¶

This is a constructor for the class.

public WpfRasterLayer(string imagePathFilename)

Parameters¶

imagePathFilename String
This parameter is the path and filename of the GDI+ image file you want to use. If you want to load a Tiff(.tif or .tiff) files, please use the GeoTiffRasterLayer instead for better performance.

Remarks:

This constructor gets the layer ready to use.

WpfRasterLayer(String, String)¶

This is a constructor for the class.

public WpfRasterLayer(string imagePathFilename, string worldFilePathFilename)

Parameters¶

imagePathFilename String
This parameter is the path and filename of the GDI+ image file you want to use. If you want to load a Tiff(.tif or .tiff) files, please use the GeoTiffRasterLayer instead for better performance.

worldFilePathFilename String
This parameter is the world file path and filename for the GDI+ image you want to use.

Remarks:

This constructor gets the layer ready to use.

WpfRasterLayer(String, RectangleShape)¶

This is a constructor for the class.

public WpfRasterLayer(string imagePathFilename, RectangleShape imageExtent)

Parameters¶

imagePathFilename String
This parameter is the path and filename of the GDI+ image file you want to use. If you want to load a Tiff(.tif or .tiff) files, please use the GeoTiffRasterLayer instead for better performance.

imageExtent RectangleShape
This parameter is the image extent of GDI+ image file you want to use.

Remarks:

This constructor gets the layer ready to use.

Events¶

StreamLoading¶

This event allows you to pass in your own stream to represent the image.

public event EventHandler<StreamLoadingEventArgs> StreamLoading;

Remarks:

If you wish, you can pass in your own stream to represent the image. The stream can come from a variety of places, including isolated storage, a compressed file, or an encrypted stream. When the image is finished with the stream it will dispose of it, so be sure to keep this in mind when passing the stream in. If you do not pass in an alternate stream, the class will attempt to load the file from the file system using the PathFilename property.

DrawingProgressChanged¶

public event EventHandler<DrawingProgressChangedEventArgs> DrawingProgressChanged;

RequestedDrawing¶

public event EventHandler<RequestedDrawingLayerEventArgs> RequestedDrawing;

RequestingDrawing¶

public event EventHandler<RequestingDrawingLayerEventArgs> RequestingDrawing;

DrawingException¶

public event EventHandler<DrawingExceptionLayerEventArgs> DrawingException;

DrawnException¶

public event EventHandler<DrawnExceptionLayerEventArgs> DrawnException;