''' <summary>
''' Enables the color management in image or thumbnail viewer.
''' </summary>
''' <param name="viewer">An image/thumbnail viewer.</param>
''' <param name="inputCmykProfile">The input CMYK profile.</param>
''' <param name="inputRgbProfile">The input RGB profile.</param>
''' <param name="outputRgbProfile">The output RGB profile.</param>
Public Shared Sub EnableViewerColorManagement(viewer As Vintasoft.Imaging.UI.ImageViewerBase, inputCmykProfile As String, inputRgbProfile As String, outputRgbProfile As String)
    ' if all profiles are empty
    If String.IsNullOrEmpty(inputCmykProfile) AndAlso String.IsNullOrEmpty(inputRgbProfile) AndAlso String.IsNullOrEmpty(outputRgbProfile) Then
        Return
    End If

    ' get current image decoding settings from the viewer
    Dim decodingImageSettings As Vintasoft.Imaging.Codecs.Decoders.DecodingSettings = viewer.ImageDecodingSettings
    ' if viewer does not have image decoding settings
    If decodingImageSettings Is Nothing Then
        ' create new image decoding settings
        decodingImageSettings = New Vintasoft.Imaging.Codecs.Decoders.DecodingSettings()
    End If

    ' init the image decoding settings
    InitDecodingSettings(decodingImageSettings, inputCmykProfile, inputRgbProfile, outputRgbProfile)

    ' set decoding settings to the viewer
    viewer.ImageDecodingSettings = decodingImageSettings
    ' reload images in viewer
    ReloadViewerImages(viewer)
End Sub

''' <summary>
''' Disables the color management in image/thumbnail viewer.
''' </summary>
''' <param name="viewer">An image/thumbnail viewer.</param>
Public Shared Sub DisableViewerColorManagement(viewer As Vintasoft.Imaging.UI.ImageViewerBase)
    ' get decoding settings from image/thumbnail viewer
    Dim imageDecodingSettings As Vintasoft.Imaging.Codecs.Decoders.DecodingSettings = viewer.ImageDecodingSettings
    If imageDecodingSettings Is Nothing Then
        Return
    End If

    ' destroy the image decoding settings
    DestroyColorManagementDecodeSettings(imageDecodingSettings.ColorManagement)
    imageDecodingSettings.ColorManagement = Nothing

    ' set decoding settings to the image/thumbnail viewer
    viewer.ImageDecodingSettings = imageDecodingSettings
    ' reload images in image/thumbnail viewer
    ReloadViewerImages(viewer)
End Sub


''' <summary>
''' Initializes the decoding settings.
''' </summary>
''' <param name="decodingSettings">Image decoding settings.</param>
''' <param name="inputCmykProfile">The input CMYK profile.</param>
''' <param name="inputRgbProfile">The input RGB profile.</param>
''' <param name="outputRgbProfile">The output RGB profile.</param>
Private Shared Sub InitDecodingSettings(decodingSettings As Vintasoft.Imaging.Codecs.Decoders.DecodingSettings, inputCmykProfile As String, inputRgbProfile As String, outputRgbProfile As String)
    DestroyColorManagementDecodeSettings(decodingSettings.ColorManagement)
    decodingSettings.ColorManagement = Nothing

    decodingSettings.ColorManagement = New Vintasoft.Imaging.ColorManagement.ColorManagementDecodeSettings()

    InitColorManagementDecodeSettings(decodingSettings.ColorManagement, inputCmykProfile, inputRgbProfile, outputRgbProfile)
End Sub

''' <summary>
''' Destroys the color management decode settings.
''' </summary>
''' <param name="colorManagementDecodeSettings">Color management decode settings.</param>
Private Shared Sub DestroyColorManagementDecodeSettings(colorManagementDecodeSettings As Vintasoft.Imaging.ColorManagement.ColorManagementDecodeSettings)
    If colorManagementDecodeSettings IsNot Nothing Then
        ' if input CMYK profile is not empty
        If colorManagementDecodeSettings.InputCmykProfile IsNot Nothing Then
            ' remove input CMYK profile
            colorManagementDecodeSettings.InputCmykProfile.Dispose()
        End If

        ' if input RGB profile is not empty
        If colorManagementDecodeSettings.InputRgbProfile IsNot Nothing Then
            ' remove input RGB profile
            colorManagementDecodeSettings.InputRgbProfile.Dispose()
        End If

        ' if output RGB profile is not empty
        If colorManagementDecodeSettings.OutputRgbProfile IsNot Nothing Then
            ' remove output RGB profile
            colorManagementDecodeSettings.OutputRgbProfile.Dispose()
        End If
    End If
End Sub

''' <summary>
''' Initializes the color management decode settings.
''' </summary>
''' <param name="colorManagementDecodeSettings">Color management decode settings.</param>
''' <param name="inputCmykProfile">The input CMYK profile.</param>
''' <param name="inputRgbProfile">The input RGB profile.</param>
''' <param name="outputRgbProfile">The output RGB profile.</param>
Private Shared Sub InitColorManagementDecodeSettings(colorManagementDecodeSettings As Vintasoft.Imaging.ColorManagement.ColorManagementDecodeSettings, inputCmykProfile As String, inputRgbProfile As String, outputRgbProfile As String)
    ' if input CMYK profile is not empty
    If Not String.IsNullOrEmpty(inputCmykProfile) Then
        ' set input CMYK profile
        colorManagementDecodeSettings.InputCmykProfile = New Vintasoft.Imaging.ColorManagement.Icc.IccProfile(inputCmykProfile)
    End If
    ' if input RGB profile is not empty
    If Not String.IsNullOrEmpty(inputRgbProfile) Then
        ' set input RGB profile
        colorManagementDecodeSettings.InputRgbProfile = New Vintasoft.Imaging.ColorManagement.Icc.IccProfile(inputRgbProfile)
    End If
    ' if output RGB profile is not empty
    If Not String.IsNullOrEmpty(outputRgbProfile) Then
        ' set output RGB profile
        colorManagementDecodeSettings.OutputRgbProfile = New Vintasoft.Imaging.ColorManagement.Icc.IccProfile(outputRgbProfile)
    End If
End Sub

''' <summary>
''' Reloads the images in the specified image/thumbnail viewer.
''' </summary>
''' <param name="viewer">The image/thumbnail viewer.</param>
Private Shared Sub ReloadViewerImages(viewer As Vintasoft.Imaging.UI.ImageViewerBase)
    Try
        ' get the image collection
        Dim images As Vintasoft.Imaging.ImageCollection = viewer.Images
        ' get the focused image
        Dim focusedIndex As Integer = viewer.FocusedIndex
        Dim focusedImage As Vintasoft.Imaging.VintasoftImage = Nothing
        If focusedIndex >= 0 AndAlso focusedIndex < images.Count Then
            focusedImage = images(focusedIndex)
            ' if focused image is not empty
            If focusedImage IsNot Nothing Then
                ' reload image
                focusedImage.Reload(True)
            End If
        End If

        ' for each image in collection
        For Each image As Vintasoft.Imaging.VintasoftImage In images
            ' if this is not focused image
            If image IsNot focusedImage Then
                ' reload image
                image.Reload(True)
            End If
        Next
    Catch ex As System.Exception
        ' show error message
        System.Windows.Forms.MessageBox.Show(ex.Message, "Error", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.[Error])
    End Try
End Sub

/// <summary>
/// Enables the color management in image or thumbnail viewer.
/// </summary>
/// <param name="viewer">An image/thumbnail viewer.</param>
/// <param name="inputCmykProfile">The input CMYK profile.</param>
/// <param name="inputRgbProfile">The input RGB profile.</param>
/// <param name="outputRgbProfile">The output RGB profile.</param>
public static void EnableViewerColorManagement(
    Vintasoft.Imaging.UI.ImageViewerBase viewer,
    string inputCmykProfile,
    string inputRgbProfile,
    string outputRgbProfile)
{
    // if all profiles are empty
    if (string.IsNullOrEmpty(inputCmykProfile) &&
        string.IsNullOrEmpty(inputRgbProfile) &&
        string.IsNullOrEmpty(outputRgbProfile))
        return;

    // get current image decoding settings from the viewer
    Vintasoft.Imaging.Codecs.Decoders.DecodingSettings decodingImageSettings = viewer.ImageDecodingSettings;
    // if viewer does not have image decoding settings
    if (decodingImageSettings == null)
        // create new image decoding settings
        decodingImageSettings = new Vintasoft.Imaging.Codecs.Decoders.DecodingSettings();

    // init the image decoding settings
    InitDecodingSettings(decodingImageSettings, inputCmykProfile, inputRgbProfile, outputRgbProfile);
 
    // set decoding settings to the viewer
    viewer.ImageDecodingSettings = decodingImageSettings;
    // reload images in viewer
    ReloadViewerImages(viewer);
}

/// <summary>
/// Disables the color management in image/thumbnail viewer.
/// </summary>
/// <param name="viewer">An image/thumbnail viewer.</param>
public static void DisableViewerColorManagement(Vintasoft.Imaging.UI.ImageViewerBase viewer)
{
    // get decoding settings from image/thumbnail viewer
    Vintasoft.Imaging.Codecs.Decoders.DecodingSettings imageDecodingSettings = viewer.ImageDecodingSettings;
    if (imageDecodingSettings == null)
        return;

    // destroy the image decoding settings
    DestroyColorManagementDecodeSettings(imageDecodingSettings.ColorManagement);
    imageDecodingSettings.ColorManagement = null;

    // set decoding settings to the image/thumbnail viewer
    viewer.ImageDecodingSettings = imageDecodingSettings;
    // reload images in image/thumbnail viewer
    ReloadViewerImages(viewer);
}


/// <summary>
/// Initializes the decoding settings.
/// </summary>
/// <param name="decodingSettings">Image decoding settings.</param>
/// <param name="inputCmykProfile">The input CMYK profile.</param>
/// <param name="inputRgbProfile">The input RGB profile.</param>
/// <param name="outputRgbProfile">The output RGB profile.</param>
static void InitDecodingSettings(
    Vintasoft.Imaging.Codecs.Decoders.DecodingSettings decodingSettings,
    string inputCmykProfile,
    string inputRgbProfile,
    string outputRgbProfile)
{
    DestroyColorManagementDecodeSettings(decodingSettings.ColorManagement);
    decodingSettings.ColorManagement = null;

    decodingSettings.ColorManagement = new Vintasoft.Imaging.ColorManagement.ColorManagementDecodeSettings();

    InitColorManagementDecodeSettings(decodingSettings.ColorManagement, inputCmykProfile, inputRgbProfile, outputRgbProfile);
}

/// <summary>
/// Destroys the color management decode settings.
/// </summary>
/// <param name="colorManagementDecodeSettings">Color management decode settings.</param>
static void DestroyColorManagementDecodeSettings(
    Vintasoft.Imaging.ColorManagement.ColorManagementDecodeSettings colorManagementDecodeSettings)
{
    if (colorManagementDecodeSettings != null)
    {
        // if input CMYK profile is not empty
        if (colorManagementDecodeSettings.InputCmykProfile != null)
        {
            // remove input CMYK profile
            colorManagementDecodeSettings.InputCmykProfile.Dispose();
        }

        // if input RGB profile is not empty
        if (colorManagementDecodeSettings.InputRgbProfile != null)
        {
            // remove input RGB profile
            colorManagementDecodeSettings.InputRgbProfile.Dispose();
        }

        // if output RGB profile is not empty
        if (colorManagementDecodeSettings.OutputRgbProfile != null)
        {
            // remove output RGB profile
            colorManagementDecodeSettings.OutputRgbProfile.Dispose();
        }
    }
}

/// <summary>
/// Initializes the color management decode settings.
/// </summary>
/// <param name="colorManagementDecodeSettings">Color management decode settings.</param>
/// <param name="inputCmykProfile">The input CMYK profile.</param>
/// <param name="inputRgbProfile">The input RGB profile.</param>
/// <param name="outputRgbProfile">The output RGB profile.</param>
static void InitColorManagementDecodeSettings(
    Vintasoft.Imaging.ColorManagement.ColorManagementDecodeSettings colorManagementDecodeSettings,
    string inputCmykProfile,
    string inputRgbProfile,
    string outputRgbProfile)
{
    // if input CMYK profile is not empty
    if (!string.IsNullOrEmpty(inputCmykProfile))
    {
        // set input CMYK profile
        colorManagementDecodeSettings.InputCmykProfile =
            new Vintasoft.Imaging.ColorManagement.Icc.IccProfile(inputCmykProfile);
    }
    // if input RGB profile is not empty
    if (!string.IsNullOrEmpty(inputRgbProfile))
    {
        // set input RGB profile
        colorManagementDecodeSettings.InputRgbProfile =
            new Vintasoft.Imaging.ColorManagement.Icc.IccProfile(inputRgbProfile);
    }
    // if output RGB profile is not empty
    if (!string.IsNullOrEmpty(outputRgbProfile))
    {
        // set output RGB profile
        colorManagementDecodeSettings.OutputRgbProfile =
            new Vintasoft.Imaging.ColorManagement.Icc.IccProfile(outputRgbProfile);
    }
}

/// <summary>
/// Reloads the images in the specified image/thumbnail viewer.
/// </summary>
/// <param name="viewer">The image/thumbnail viewer.</param>
static void ReloadViewerImages(Vintasoft.Imaging.UI.ImageViewerBase viewer)
{
    try
    {
        // get the image collection
        Vintasoft.Imaging.ImageCollection images = viewer.Images;
        // get the focused image
        int focusedIndex = viewer.FocusedIndex;
        Vintasoft.Imaging.VintasoftImage focusedImage = null;
        if (focusedIndex >= 0 && focusedIndex < images.Count)
        {
            focusedImage = images[focusedIndex];
            // if focused image is not empty
            if (focusedImage != null)
            {
                // reload image
                focusedImage.Reload(true);
            }
        }

        // for each image in collection
        foreach (Vintasoft.Imaging.VintasoftImage image in images)
        {
            // if this is not focused image
            if (image != focusedImage)
            {
                // reload image
                image.Reload(true);
            }
        }
    }
    catch (System.Exception ex)
    {
        // show error message
        System.Windows.Forms.MessageBox.Show(ex.Message, "Error",
            System.Windows.Forms.MessageBoxButtons.OK,
            System.Windows.Forms.MessageBoxIcon.Error);
    }
}