Draw into Graphics Context

• May 31, 2019
• 3 minutes to read

The PdfGraphics class contains methods (GDI+ like) that allow you to draw different shapes, lines, and images into a PDF graphics context.

Member	Description
PdfGraphics.DrawLine	Draws a line connecting two points on the page specified by the coordinate pairs.
PdfGraphics.DrawLines	Draws a series of line segments that connect an array of PointF structures.
PdfGraphics.DrawBezier	Draws a Bezier spline defined by four Point structures.
PdfGraphics.DrawBeziers	Draws a series of Bezier splines from an array of PointF structures.
PdfGraphics.DrawEllipse	Draws an ellipse specified by a RectangleF structure.
PdfGraphics.DrawRectangle	Draws a rectangle specified by a Rectangle structure.
PdfGraphics.DrawPolygon	Draws a polygon defined by an array of PointF structures.
PdfGraphics.DrawPath	Draws a path on a page.
PdfGraphics.DrawString	A set of overloaded methods used to draw the text string with the specified SolidBrush, Font objects and other parameters.
PdfGraphics.DrawImage	Draws the specified image using the byte array or stream data at the specified location.
PdfGraphics.FillRectangle	Fills the interior of a rectangle specified by a RectangleF structure.
PdfGraphics.FillPath	Fills the interior of a GraphicsPath.
PdfGraphics.FillEllipse	Fills the interior of an ellipse defined by a bounding rectangle specified by a RectangleF structure.
PdfGraphics.FillPolygon	Fills the interior of a polygon defined by an array of points specified by PointF structures.
PdfGraphics.RotateTransform	Rotates the coordinate system clockwise relative to its origin to the specified angle.
PdfGraphics.ScaleTransform	Scales the coordinate system according to the specified scale factor.
PdfGraphics.TranslateTransform	Translates the origin of the coordinate system to the specified point.

When an image is drawn on a page using one of the overloaded PdfGraphics.DrawImage methods, the PDF Document API may produce a resulting PDF file of the large size. To reduce the size of the PDF file, use the PdfGraphics.ConvertImagesToJpeg and PdfGraphics.JpegImageQuality properties.

To customize text drawing, use the PdfGraphics.TextOrigin and PdfGraphics.UseKerning properties before calling the overloaded PdfGraphics.DrawString methods.

Example

This example shows how to draw text lines on a page using the PdfGraphics.DrawString method.

Tip

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=T244516.

C#

static void DrawGraphics(PdfGraphics graphics) { 

    SolidBrush black = (SolidBrush)Brushes.Black; 
    using (Font font1 = new Font("Times New Roman", 32, FontStyle.Bold)) { 
                graphics.DrawString("PDF Document Processor", font1, black, 180, 150); 
    } 
    using (Font font2 = new Font("Arial", 20)) { 
                graphics.DrawString("Display, Print and Export PDF Documents", font2, black, 168, 230); 
    } 
    using (Font font3 = new Font("Arial", 10)) { 
                graphics.DrawString("The PDF Document Processor is a non-visual component " + 
                                  "that provides the application programming interface of the PDF Viewer.", font3, black, 16, 300); 
    } 
}

VB.NET

Private Shared Sub DrawGraphics(graphics As PdfGraphics)

    Dim black As SolidBrush = DirectCast(Brushes.Black, SolidBrush)
    Using font1 As New Font("Times New Roman", 32, FontStyle.Bold)
        graphics.DrawString("PDF Document Processor", font1, black, 180, 150)
    End Using
    Using font2 As New Font("Arial", 20)
        graphics.DrawString("Display, Print and Export PDF Documents", font2, black, 168, 230)
    End Using
    Using font3 As New Font("Arial", 10)
        graphics.DrawString("The PDF Document Processor is a non-visual component " + 
                         "that provides the application programming interface of the PDF Viewer.", font3, black, 16, 300)
    End Using
End Sub