''' <summary>
''' Tests the hide action.
''' </summary>
Public Shared Sub TestHideAction()
    ' create PDF document
    Using document As New Vintasoft.Imaging.Pdf.PdfDocument()
        ' create interactive form in PDF document
        document.InteractiveForm = New Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfDocumentInteractiveForm(document)

        ' specify that the viewer application must construct appearance streams and
        ' appearance properties for all widget annotations
        document.InteractiveForm.NeedAppearances = True

        ' create an empty page
        Dim page As New Vintasoft.Imaging.Pdf.Tree.PdfPage(document, Vintasoft.Imaging.PaperSizeKind.A4)
        ' add page to the document
        document.Pages.Add(page)

        Dim width As Single = 100
        Dim height As Single = 30
        ' create a rectangle that defines push box position on PDF page
        Dim rect As New System.Drawing.RectangleF((page.Size.Width - width) / 2, ((page.Size.Height - height) / 3) * 2, width, height)

        ' create a push button field
        Dim button1 As Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField = CreateButton(document, rect, "Button1", "Button1  (hide self)")

        ' create a push button field
        rect.Y -= rect.Height + rect.Height / 2
        Dim button2 As Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField = CreateButton(document, rect, "Button2", "Show Button1")

        ' set the activate action
        button1.Annotation.ActivateAction = New Vintasoft.Imaging.Pdf.Tree.PdfAnnotationHideAction(True, button1.Annotation)
        button2.Annotation.ActivateAction = New Vintasoft.Imaging.Pdf.Tree.PdfAnnotationHideAction(False, button1.Annotation)

        ' set the default appearance of text
        Dim font As Vintasoft.Imaging.Pdf.Tree.Fonts.PdfFont = document.FontManager.GetStandardFont(Vintasoft.Imaging.Pdf.Tree.Fonts.PdfStandardFontType.TimesRoman)
        button1.SetTextDefaultAppearance(font, 12, System.Drawing.Color.Black)
        button2.SetTextDefaultAppearance(font, 12, System.Drawing.Color.Black)

        ' add the push button field to the interactive form of document
        document.InteractiveForm.AddField(button1, page)
        document.InteractiveForm.AddField(button2, page)

        ' save the document
        document.Save("HideActionTest.pdf")
    End Using
End Sub

''' <summary>
''' Creates the button.
''' </summary>
''' <param name="document">The document.</param>
''' <param name="rect">Button rectangle in user space.</param>
''' <param name="name">The button name.</param>
''' <param name="text">The button text.</param>
Private Shared Function CreateButton(document As Vintasoft.Imaging.Pdf.PdfDocument, rect As System.Drawing.RectangleF, name As String, text As String) As Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField
    ' create a push button field
    Dim button As New Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField(document, name, rect)

    ' set the border style
    button.Annotation.BorderStyle = New Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationBorderStyle(document)
    button.Annotation.BorderStyle.Style = Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationBorderStyleType.Beveled
    button.Annotation.BorderStyle.Width = 1

    ' set the appearance characteristics
    button.Annotation.AppearanceCharacteristics = New Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationAppearanceCharacteristics(document)
    button.Annotation.AppearanceCharacteristics.BackgroundColor = System.Drawing.Color.LightGray
    button.Annotation.AppearanceCharacteristics.ButtonNormalCaption = text

    Return button
End Function

/// <summary>
/// Tests the hide action.
/// </summary>
public static void TestHideAction()
{
    // create PDF document
    using (Vintasoft.Imaging.Pdf.PdfDocument document = new Vintasoft.Imaging.Pdf.PdfDocument())
    {
        // create interactive form in PDF document
        document.InteractiveForm = 
            new Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfDocumentInteractiveForm(document);

        // specify that the viewer application must construct appearance streams and
        // appearance properties for all widget annotations
        document.InteractiveForm.NeedAppearances = true;

        // create an empty page
        Vintasoft.Imaging.Pdf.Tree.PdfPage page = new Vintasoft.Imaging.Pdf.Tree.PdfPage(
            document, Vintasoft.Imaging.PaperSizeKind.A4);
        // add page to the document
        document.Pages.Add(page);

        float width = 100;
        float height = 30;
        // create a rectangle that defines push box position on PDF page
        System.Drawing.RectangleF rect = new System.Drawing.RectangleF(
            (page.Size.Width - width) / 2,
            ((page.Size.Height - height) / 3) * 2,
            width, height);

        // create a push button field
        Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField button1 =
            CreateButton(document, rect, "Button1", "Button1  (hide self)");

        // create a push button field
        rect.Y -= rect.Height + rect.Height / 2;
        Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField button2 =
            CreateButton(document, rect, "Button2", "Show Button1");

        // set the activate action
        button1.Annotation.ActivateAction = 
            new Vintasoft.Imaging.Pdf.Tree.PdfAnnotationHideAction(true, button1.Annotation);
        button2.Annotation.ActivateAction = 
            new Vintasoft.Imaging.Pdf.Tree.PdfAnnotationHideAction(false, button1.Annotation);

        // set the default appearance of text
        Vintasoft.Imaging.Pdf.Tree.Fonts.PdfFont font = document.FontManager.GetStandardFont(
            Vintasoft.Imaging.Pdf.Tree.Fonts.PdfStandardFontType.TimesRoman);
        button1.SetTextDefaultAppearance(font, 12, System.Drawing.Color.Black);
        button2.SetTextDefaultAppearance(font, 12, System.Drawing.Color.Black);

        // add the push button field to the interactive form of document
        document.InteractiveForm.AddField(button1, page);
        document.InteractiveForm.AddField(button2, page);

        // save the document
        document.Save("HideActionTest.pdf");
    }
}

/// <summary>
/// Creates the button.
/// </summary>
/// <param name="document">The document.</param>
/// <param name="rect">Button rectangle in user space.</param>
/// <param name="name">The button name.</param>
/// <param name="text">The button text.</param>
private static Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField CreateButton(
    Vintasoft.Imaging.Pdf.PdfDocument document, System.Drawing.RectangleF rect, string name, string text)
{
    // create a push button field
    Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField button =
        new Vintasoft.Imaging.Pdf.Tree.InteractiveForms.PdfInteractiveFormPushButtonField(document, name, rect);

    // set the border style
    button.Annotation.BorderStyle = new Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationBorderStyle(document);
    button.Annotation.BorderStyle.Style = Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationBorderStyleType.Beveled;
    button.Annotation.BorderStyle.Width = 1;

    // set the appearance characteristics
    button.Annotation.AppearanceCharacteristics = 
        new Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationAppearanceCharacteristics(document);
    button.Annotation.AppearanceCharacteristics.BackgroundColor = System.Drawing.Color.LightGray;
    button.Annotation.AppearanceCharacteristics.ButtonNormalCaption = text;

    return button;
}