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CropCommand Class
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Leadtools.ImageProcessing Namespace : CropCommand Class



Crops the image, resulting in an image that is the size of the specified rectangle. Supported in Silverlight, Windows Phone 7

Object Model

CropCommand ClassLeadRect Structure

Syntax

Visual Basic (Declaration) 
Public Class CropCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As CropCommand
C# 
public class CropCommand : RasterCommand, IRasterCommand  
C++/CLI 
public ref class CropCommand : public RasterCommand, IRasterCommand  

Example

This example trims 100 pixels off of each side of an image.

Visual BasicCopy Code
Public Sub CropCommandExample()
      Dim codecs As RasterCodecs = New RasterCodecs()

      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
      Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "CropCommand.bmp")

      ' Load the source image from disk
      Dim image As RasterImage = codecs.Load(srcFileName)

      ' Crop 100 pixels from each side of the image
      Dim command As CropCommand = New CropCommand()
      command.Rectangle = New LeadRect(100, 100, image.Width - 100, image.Height - 100)
      command.Run(image)

      ' Save it to disk
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)

      ' Clean Up
      image.Dispose()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
public void CropCommandExample()
   {
      RasterCodecs codecs = new RasterCodecs();

      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
      string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "CropCommand.bmp");

      // Load the source image from disk
      RasterImage image = codecs.Load(srcFileName);

      // Crop 100 pixels from each side of the image
      CropCommand command = new CropCommand();
      command.Rectangle = new LeadRect(
         100,
         100,
         image.Width - 100,
         image.Height - 100);
      command.Run(image);

      // Save it to disk
      codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);

      // Clean Up
      image.Dispose();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void CropCommandExample(RasterImage image, Stream destStream)
{
   RasterCodecs codecs = new RasterCodecs();
   // Crop 100 pixels from each side of the image
   CropCommand command = new CropCommand();
   command.Rectangle = new LeadRect(
      100,
      100,
      image.Width - 100,
      image.Height - 100);
   command.Run(image);

   // Save it to disk
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 24);

   // Clean Up
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub CropCommandExample(ByVal image As RasterImage, ByVal destStream As Stream)
   Dim codecs As RasterCodecs = New RasterCodecs()
   ' Crop 100 pixels from each side of the image
   Dim command As CropCommand = New CropCommand()
   command.Rectangle = New LeadRect(100, 100, image.Width - 100, image.Height - 100)
   command.Run(image)

   ' Save it to disk
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 24)

   ' Clean Up
   image.Dispose()
End Sub

Remarks

If a region is defined for the image, the region is also cropped if necessary.

For more information, refer to Introduction to Image Processing With LEADTOOLS.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.CropCommand

Requirements

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7

See Also