The following steps must be made if the custom image processing command must be created:
' The project, which uses this code, must have references to the following assemblies:
' - Vintasoft.Imaging
''' <summary>
''' Inverts colors of an image.
''' </summary>
Public Class CustomInvertCommand
Inherits Vintasoft.Imaging.ImageProcessing.ProcessingCommandWithRegion
#Region "Constructors"
''' <summary>
''' Initializes a new instance of the class.
''' </summary>
Public Sub New()
MyBase.New()
End Sub
#End Region
#Region "Properties"
''' <summary>
''' Gets the name of the command.
''' </summary>
Public Overrides ReadOnly Property Name() As String
Get
Return "Invert"
End Get
End Property
''' <summary>
''' Gets a list of supported native pixel formats for this processing command.
''' </summary>
Public Overrides ReadOnly Property SupportedNativePixelFormats() As System.Collections.ObjectModel.ReadOnlyCollection(Of Vintasoft.Imaging.PixelFormat)
Get
Dim supportedNativePixelFormats__1 As New System.Collections.Generic.List(Of Vintasoft.Imaging.PixelFormat)()
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.BlackWhite)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Indexed1)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Indexed4)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Indexed8)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Gray8)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Gray16)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Bgr24)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Bgr32)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Bgr48)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Bgra32)
supportedNativePixelFormats__1.Add(Vintasoft.Imaging.PixelFormat.Bgra64)
Return supportedNativePixelFormats__1.AsReadOnly()
End Get
End Property
#End Region
#Region "Methods"
''' <summary>
''' Returns the pixel format of output image (image after processing)
''' for input image with specified pixel format.
''' </summary>
''' <param name="inputPixelFormat">Pixel format of input image.</param>
''' <returns>Pixel format of output image.</returns>
Public Overrides Function GetOutputPixelFormat(inputPixelFormat As Vintasoft.Imaging.PixelFormat) As Vintasoft.Imaging.PixelFormat
If IsPixelFormatSupported(inputPixelFormat) Then
Return inputPixelFormat
End If
Return Vintasoft.Imaging.PixelFormat.Undefined
End Function
''' <summary>
''' Creates a new <see cref="CustomInvertCommand"/> that is a copy of the current
''' instance.
''' </summary>
''' <returns>A new <see cref="CustomInvertCommand"/> that is a copy of this
''' instance.</returns>
Public Overrides Function Clone() As Object
Return New CustomInvertCommand()
End Function
''' <summary>
''' Processes the image in-place.
''' </summary>
''' <param name="image">Image to process.</param>
''' <returns>
''' <b>true</b> if image is processed;
''' <b>false</b> if processing is canceled or not necessary.
''' </returns>
''' <remarks>
''' This method changes the <i>image</i>.
''' </remarks>
Protected Overrides Function ProcessImageInPlace(image As Vintasoft.Imaging.VintasoftImage) As Boolean
Dim rect As System.Drawing.Rectangle = Me.GetSafeRegionOfInterest(image)
Dim cancel As Boolean = False
Dim height As Integer = rect.Height
Dim pixelManipulator As Vintasoft.Imaging.PixelManipulator
Dim rowData As Byte()
Dim rowLength As Integer
Dim progress As Single = 0
Dim progressDelta As Single = 100F / height
Select Case image.PixelFormat
Case Vintasoft.Imaging.PixelFormat.BlackWhite, Vintasoft.Imaging.PixelFormat.Indexed1, Vintasoft.Imaging.PixelFormat.Indexed4, Vintasoft.Imaging.PixelFormat.Indexed8, Vintasoft.Imaging.PixelFormat.Gray8
If Not RegionOfInterest.IsEmpty Then
Throw New Vintasoft.Imaging.ImageProcessing.ImageProcessingException(String.Format("{0}: this processing command does not support RegionOfInterest for palette images.", Name))
End If
image.Palette.Invert()
Exit Select
Case Vintasoft.Imaging.PixelFormat.Gray16
pixelManipulator = image.OpenPixelManipulator()
pixelManipulator.LockPixels(rect, Vintasoft.Imaging.BitmapLockMode.ReadWrite)
rowLength = rect.Width * 2
rowData = New Byte(rowLength - 1) {}
For y As Integer = 0 To height - 1
pixelManipulator.ReadRowDataUnsafe(y, rowData, 0, rowLength)
For x As Integer = 0 To rowLength - 1 Step 2
rowData(x) = rowData(x) Xor &Hff
rowData(x + 1) = rowData(x + 1) Xor &H3f
Next
pixelManipulator.WriteRowData(y, rowData, 0, rowLength)
' change the progress
progress += progressDelta
' raise the progress event
If Not RaiseProgress(progress, True) Then
cancel = True
Exit For
End If
Next
pixelManipulator.UnlockPixels()
' close the pixel manipulator
image.ClosePixelManipulator(True)
Exit Select
Case Vintasoft.Imaging.PixelFormat.Bgr24, Vintasoft.Imaging.PixelFormat.Bgr48
pixelManipulator = image.OpenPixelManipulator()
pixelManipulator.LockPixels(rect, Vintasoft.Imaging.BitmapLockMode.ReadWrite)
rowLength = rect.Width * 3
rowData = New Byte(rowLength - 1) {}
For y As Integer = 0 To height - 1
pixelManipulator.ReadRowDataUnsafe(y, rowData, 0, rowLength)
For x As Integer = 0 To rowLength - 1
rowData(x) = rowData(x) Xor &Hff
Next
pixelManipulator.WriteRowDataUnsafe(y, rowData, 0, rowLength)
' change the progress
progress += progressDelta
' raise the progress event
If Not RaiseProgress(progress, True) Then
cancel = True
Exit For
End If
Next
pixelManipulator.UnlockPixels()
' close the pixel manipulator
image.ClosePixelManipulator(True)
Exit Select
Case Vintasoft.Imaging.PixelFormat.Bgr32, Vintasoft.Imaging.PixelFormat.Bgra32, Vintasoft.Imaging.PixelFormat.Bgra64
pixelManipulator = image.OpenPixelManipulator()
pixelManipulator.LockPixels(rect, Vintasoft.Imaging.BitmapLockMode.ReadWrite)
rowLength = rect.Width * 4
rowData = New Byte(rowLength - 1) {}
For y As Integer = 0 To height - 1
pixelManipulator.ReadRowDataUnsafe(y, rowData, 0, rowLength)
For x As Integer = 0 To rowLength - 1 Step 4
rowData(x) = rowData(x) Xor &Hff
rowData(x + 1) = rowData(x + 1) Xor &Hff
rowData(x + 2) = rowData(x + 2) Xor &Hff
Next
pixelManipulator.WriteRowDataUnsafe(y, rowData, 0, rowLength)
' change the progress
progress += progressDelta
' raise the progress event
If Not RaiseProgress(progress, True) Then
cancel = True
Exit For
End If
Next
pixelManipulator.UnlockPixels()
' close the pixel manipulator
image.ClosePixelManipulator(True)
Exit Select
End Select
Return Not cancel
End Function
#End Region
End Class
// The project, which uses this code, must have references to the following assemblies:
// - Vintasoft.Imaging
/// <summary>
/// Inverts colors of an image.
/// </summary>
public class CustomInvertCommand : Vintasoft.Imaging.ImageProcessing.ProcessingCommandWithRegion
{
#region Constructors
/// <summary>
/// Initializes a new instance of the class.
/// </summary>
public CustomInvertCommand()
: base()
{
}
#endregion
#region Properties
/// <summary>
/// Gets the name of the command.
/// </summary>
public override string Name
{
get
{
return "Invert";
}
}
/// <summary>
/// Gets a list of supported native pixel formats for this processing command.
/// </summary>
public override System.Collections.ObjectModel.ReadOnlyCollection<Vintasoft.Imaging.PixelFormat> SupportedNativePixelFormats
{
get
{
System.Collections.Generic.List<Vintasoft.Imaging.PixelFormat> supportedNativePixelFormats =
new System.Collections.Generic.List<Vintasoft.Imaging.PixelFormat>();
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.BlackWhite);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Indexed1);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Indexed4);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Indexed8);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Gray8);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Gray16);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Bgr24);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Bgr32);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Bgr48);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Bgra32);
supportedNativePixelFormats.Add(Vintasoft.Imaging.PixelFormat.Bgra64);
return supportedNativePixelFormats.AsReadOnly();
}
}
#endregion
#region Methods
/// <summary>
/// Returns the pixel format of output image (image after processing)
/// for input image with specified pixel format.
/// </summary>
/// <param name="inputPixelFormat">Pixel format of input image.</param>
/// <returns>Pixel format of output image.</returns>
public override Vintasoft.Imaging.PixelFormat GetOutputPixelFormat(
Vintasoft.Imaging.PixelFormat inputPixelFormat)
{
if (IsPixelFormatSupported(inputPixelFormat))
return inputPixelFormat;
return Vintasoft.Imaging.PixelFormat.Undefined;
}
/// <summary>
/// Creates a new <see cref="CustomInvertCommand"/> that is a copy of the current
/// instance.
/// </summary>
/// <returns>A new <see cref="CustomInvertCommand"/> that is a copy of this
/// instance.</returns>
public override object Clone()
{
return new CustomInvertCommand();
}
/// <summary>
/// Processes the image in-place.
/// </summary>
/// <param name="image">Image to process.</param>
/// <returns>
/// <b>true</b> if image is processed;
/// <b>false</b> if processing is canceled or not necessary.
/// </returns>
/// <remarks>
/// This method changes the <i>image</i>.
/// </remarks>
protected override bool ProcessImageInPlace(Vintasoft.Imaging.VintasoftImage image)
{
System.Drawing.Rectangle rect = this.GetSafeRegionOfInterest(image);
bool cancel = false;
int height = rect.Height;
Vintasoft.Imaging.PixelManipulator pixelManipulator;
byte[] rowData;
int rowLength;
float progress = 0;
float progressDelta = 100f / height;
switch (image.PixelFormat)
{
case Vintasoft.Imaging.PixelFormat.BlackWhite:
case Vintasoft.Imaging.PixelFormat.Indexed1:
case Vintasoft.Imaging.PixelFormat.Indexed4:
case Vintasoft.Imaging.PixelFormat.Indexed8:
case Vintasoft.Imaging.PixelFormat.Gray8:
if (!RegionOfInterest.IsEmpty)
throw new Vintasoft.Imaging.ImageProcessing.ImageProcessingException(
string.Format("{0}: this processing command does not support RegionOfInterest for palette images.", Name));
image.Palette.Invert();
break;
case Vintasoft.Imaging.PixelFormat.Gray16:
pixelManipulator = image.OpenPixelManipulator();
pixelManipulator.LockPixels(rect, Vintasoft.Imaging.BitmapLockMode.ReadWrite);
rowLength = rect.Width * 2;
rowData = new byte[rowLength];
for (int y = 0; y < height; y++)
{
pixelManipulator.ReadRowDataUnsafe(y, rowData, 0, rowLength);
for (int x = 0; x < rowLength; x += 2)
{
rowData[x] ^= 0xFF;
rowData[x + 1] ^= 0x3F;
}
pixelManipulator.WriteRowData(y, rowData, 0, rowLength);
// change the progress
progress += progressDelta;
// raise the progress event
if (!RaiseProgress(progress, true))
{
cancel = true;
break;
}
}
pixelManipulator.UnlockPixels();
// close the pixel manipulator
image.ClosePixelManipulator(true);
break;
case Vintasoft.Imaging.PixelFormat.Bgr24:
case Vintasoft.Imaging.PixelFormat.Bgr48:
pixelManipulator = image.OpenPixelManipulator();
pixelManipulator.LockPixels(rect, Vintasoft.Imaging.BitmapLockMode.ReadWrite);
rowLength = rect.Width * 3;
rowData = new byte[rowLength];
for (int y = 0; y < height; y++)
{
pixelManipulator.ReadRowDataUnsafe(y, rowData, 0, rowLength);
for (int x = 0; x < rowLength; x++)
{
rowData[x] ^= 0xFF;
}
pixelManipulator.WriteRowDataUnsafe(y, rowData, 0, rowLength);
// change the progress
progress += progressDelta;
// raise the progress event
if (!RaiseProgress(progress, true))
{
cancel = true;
break;
}
}
pixelManipulator.UnlockPixels();
// close the pixel manipulator
image.ClosePixelManipulator(true);
break;
case Vintasoft.Imaging.PixelFormat.Bgr32:
case Vintasoft.Imaging.PixelFormat.Bgra32:
case Vintasoft.Imaging.PixelFormat.Bgra64:
pixelManipulator = image.OpenPixelManipulator();
pixelManipulator.LockPixels(rect, Vintasoft.Imaging.BitmapLockMode.ReadWrite);
rowLength = rect.Width * 4;
rowData = new byte[rowLength];
for (int y = 0; y < height; y++)
{
pixelManipulator.ReadRowDataUnsafe(y, rowData, 0, rowLength);
for (int x = 0; x < rowLength; x += 4)
{
rowData[x] ^= 0xFF;
rowData[x + 1] ^= 0xFF;
rowData[x + 2] ^= 0xFF;
}
pixelManipulator.WriteRowDataUnsafe(y, rowData, 0, rowLength);
// change the progress
progress += progressDelta;
// raise the progress event
if (!RaiseProgress(progress, true))
{
cancel = true;
break;
}
}
pixelManipulator.UnlockPixels();
// close the pixel manipulator
image.ClosePixelManipulator(true);
break;
}
return !cancel;
}
#endregion
}