/// <summary>
/// Initializes a new instance of the XForm class such that it can be drawn on the specified graphics
/// object.
/// </summary>
/// <param name="gfx">The graphics object that later is used to draw this form.</param>
/// <param name="size">The size in points of the form.</param>
public XForm(XGraphics gfx, XSize size)
{
if (gfx == null)
{
throw new ArgumentNullException("gfx");
}
if (size.Width < 1 || size.Height < 1)
{
throw new ArgumentNullException("size", "The size of the XPDFForm is to small.");
}
_formState = FormState.Created;
//templateSize = size;
_viewBox.Width = size.Width;
_viewBox.Height = size.Height;
// If gfx belongs to a PDFPage also create the PDFFormXObject
if (gfx.PDFPage != null)
{
_document = gfx.PDFPage.Owner;
_pdfForm = new PDFFormXObject(_document, this);
PDFRectangle rect = new PDFRectangle(new XPoint(), size);
_pdfForm.Elements.SetRectangle(PDFFormXObject.Keys.BBox, rect);
}
}
private static void DrawFormXObjects(PDFPage page, PDFFont titleFont, PDFFont sectionFont)
{
PDFBrush brush = new PDFBrush();
PDFPen blackPen = new PDFPen(PDFRgbColor.Black, 1);
PDFRgbColor randomPenColor = new PDFRgbColor();
PDFPen randomPen = new PDFPen(randomPenColor, 1);
PDFRgbColor randomBrushColor = new PDFRgbColor();
PDFBrush randomBrush = new PDFBrush(randomBrushColor);
page.Canvas.DrawString("Form XObjects", titleFont, brush, 20, 50);
page.Canvas.DrawString("Scaling", sectionFont, brush, 20, 70);
// Create the XObject content - random rectangles
PDFFormXObject xobject = new PDFFormXObject(300, 300);
Random rnd = new Random();
for (int i = 0; i < 100; i++)
{
randomPenColor.R = (byte)rnd.Next(256);
randomPenColor.G = (byte)rnd.Next(256);
randomPenColor.B = (byte)rnd.Next(256);
randomBrushColor.R = (byte)rnd.Next(256);
randomBrushColor.G = (byte)rnd.Next(256);
randomBrushColor.B = (byte)rnd.Next(256);
double left = rnd.NextDouble() * xobject.Width;
double top = rnd.NextDouble() * xobject.Height;
double width = rnd.NextDouble() * xobject.Width;
double height = rnd.NextDouble() * xobject.Height;
double orientation = rnd.Next(360);
xobject.Canvas.DrawRectangle(randomPen, randomBrush, left, top, width, height, orientation);
}
xobject.Canvas.DrawRectangle(blackPen, 0, 0, xobject.Width, xobject.Height);
xobject.Canvas.CompressAndClose();
// Draw the form XObject 3 times on the page at different sizes.
page.Canvas.DrawFormXObject(xobject, 3, 90, 100, 100);
page.Canvas.DrawFormXObject(xobject, 106, 90, 200, 200);
page.Canvas.DrawFormXObject(xobject, 309, 90, 300, 300);
page.Canvas.DrawString("Flipping", sectionFont, brush, 20, 420);
page.Canvas.DrawFormXObject(xobject, 20, 440, 150, 150);
page.Canvas.DrawFormXObject(xobject, 200, 440, 150, 150, 0, PDFFlipDirection.VerticalFlip);
page.Canvas.DrawFormXObject(xobject, 20, 620, 150, 150, 0, PDFFlipDirection.HorizontalFlip);
page.Canvas.DrawFormXObject(xobject, 200, 620, 150, 150, 0, PDFFlipDirection.VerticalFlip | PDFFlipDirection.HorizontalFlip);
page.Canvas.CompressAndClose();
}
/// <summary>
/// Initializes a new instance of the <see cref="XForm"/> class that represents a page of a PDF document.
/// </summary>
/// <param name="document">The PDF document.</param>
/// <param name="viewBox">The view box of the page.</param>
public XForm(PDFDocument document, XRect viewBox)
{
if (viewBox.Width < 1 || viewBox.Height < 1)
{
throw new ArgumentNullException("viewBox", "The size of the XPDFForm is to small.");
}
_formState = FormState.Created;
Owner = document ?? throw new ArgumentNullException("document", "An XPDFForm template must be associated with a document at creation time.");
_pdfForm = new PDFFormXObject(document, this);
//_templateSize = size;
ViewBox = viewBox;
PDFRectangle rect = new PDFRectangle(viewBox);
_pdfForm.Elements.SetRectangle(PDFFormXObject.Keys.BBox, rect);
}
private static void CreateRedactionAnnotations(PDFFixedDocument document, PDFFont font, Stream flashStream)
{
PDFBrush blackBrush = new PDFBrush();
PDFPage page = document.Pages.Add();
page.Canvas.DrawString("Redaction annotations", font, blackBrush, 50, 50);
PDFStandardFont helvetica = new PDFStandardFont(PDFStandardFontFace.Helvetica, 10);
page.Canvas.DrawString(
"Open the file with Adobe Acrobat, right click on the annotation and select \"Apply redactions\" The text under the annotation will be redacted.",
helvetica, blackBrush, 50, 110);
PDFFormXObject redactionAppearance = new PDFFormXObject(250, 150);
redactionAppearance.Canvas.DrawRectangle(new PDFBrush(PDFRgbColor.LightGreen),
0, 0, redactionAppearance.Width, redactionAppearance.Height);
PDFStringAppearanceOptions sao = new PDFStringAppearanceOptions();
sao.Brush = new PDFBrush(PDFRgbColor.DarkRed);
sao.Font = new PDFStandardFont(PDFStandardFontFace.HelveticaBold, 32);
PDFStringLayoutOptions slo = new PDFStringLayoutOptions();
slo.Width = redactionAppearance.Width;
slo.Height = redactionAppearance.Height;
slo.X = 0;
slo.Y = 0;
slo.HorizontalAlign = PDFStringHorizontalAlign.Center;
slo.VerticalAlign = PDFStringVerticalAlign.Middle;
redactionAppearance.Canvas.DrawString("This content has been redacted", sao, slo);
PDFRedactionAnnotation redactionAnnotation = new PDFRedactionAnnotation();
page.Annotations.Add(redactionAnnotation);
redactionAnnotation.Author = "PDF4NET";
redactionAnnotation.BorderColor = new PDFRgbColor(192, 0, 0);
redactionAnnotation.BorderWidth = 1;
redactionAnnotation.OverlayAppearance = redactionAppearance;
redactionAnnotation.DisplayRectangle = new PDFDisplayRectangle(50, 100, 250, 150);
}
