PdfGraphics.IntersectClip(RectangleF) Method

Assigns the clip region of the PdfGraphics object to the intersection of the current clip region and the specified page region.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v23.2.Drawing.dll

NuGet Package: DevExpress.Pdf.Drawing

Declaration

C#

public void IntersectClip(
    RectangleF rect
)

VB.NET

Public Sub IntersectClip(
    rect As RectangleF
)

Parameters

Name	Type	Description
rect	RectangleF	A RectangleF structure that intersects the current clip region of the PdfGraphics object (defined in world coordinate system).

Remarks

This method allows you to crop the clip region of the PdfGraphics object. Use the PdfGraphics methods (like GDI+) to draw the updated clip region. Refer to the following article for a list of supported drawing method: PDF Graphics API. Then, call the PdfGraphics.AddToPageForeground, PdfGraphics.AddToPageBackground, or PdfDocumentProcessor.RenderNewPage method to add the resulting graphics to a document page.

The code sample below sets the clip region of the PdfGraphics object to the intersection of the current clip region and the specified page region.

C#

using DevExpress.Pdf;
using System.Drawing;
//...

using (PdfDocumentProcessor processor = new PdfDocumentProcessor())
{
    processor.CreateEmptyDocument();
    PdfPage page = processor.AddNewPage(PdfPaperSize.A4);
        using (PdfGraphics graphics = processor.CreateGraphics())
        {
            graphics.SaveGraphicsState();

            // Specify the page region that intersects the clip region.
            Rectangle clipRect = new Rectangle(100, 100, 200, 200);

            // Set the clip region to the intersection of 
            // the current clip region with the specified rectangle. 
            graphics.IntersectClip(clipRect);

            // Draw the updated clip region.
            using (var brush = new SolidBrush(Color.Blue))
                graphics.FillRectangle(brush, new RectangleF(0, 0, 500, 500));
            graphics.RestoreGraphicsState();

            // Add graphics content to the target page.
            graphics.AddToPageForeground(page, 72, 72);
        }
    processor.SaveDocument("out2.pdf");
}
Process.Start("out.pdf");

VB.NET

Imports DevExpress.Pdf
Imports System.Drawing
'...

Using processor As New PdfDocumentProcessor()
    processor.CreateEmptyDocument()
    Dim page As PdfPage = processor.AddNewPage(PdfPaperSize.A4)
        Using graphics As PdfGraphics = processor.CreateGraphics()
            graphics.SaveGraphicsState()

            ' Specify the page region that intersects the clip region.
            Dim clipRect As New Rectangle(100, 100, 200, 200)

            ' Set the clip region to the intersection of 
            ' the current clip region with the specified rectangle.
            graphics.IntersectClip(clipRect)

            ' Draw the updated clip region.
            Using brush = New SolidBrush(Color.Blue)
                graphics.FillRectangle(brush, New RectangleF(0, 0, 500, 500))
            End Using
            graphics.RestoreGraphicsState()

            ' Add graphics content to the target page.
            graphics.AddToPageForeground(page, 72, 72)
        End Using
    processor.SaveDocument("out2.pdf")
End Using
Process.Start("out.pdf")