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ImageRectangle Property (RasterImagePrinter)

Summary

Rectangle that specifies the portion of the image to print.

Syntax

C++

public System.Drawing.Rectangle ImageRectangle { get; set; }

Public Property ImageRectangle() As System.Drawing.Rectangle 
   Get 
   Set

public:  
   property System::Drawing::Rectangle^ ImageRectangle 
   { 
      System::Drawing::Rectangle^ get() 
      void set(System::Drawing::Rectangle^ value) 
   }

Property Value

A System.Drawing.Rectangle that specifies the portion of the image to print.

Remarks

This rectangle must be in image coordinates. To convert between image and device coordinates refer to RectangleFromImage and RectangleToImage

You can also pass Rectangle.Empty to use the whole image.

Example

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using LeadtoolsExamples.Common; 
 
// The image we are printing 
private RasterImage myRasterImage = null; 
public void RasterImagePrinterExample2() 
{ 
   // Check if there are printers installed on this machine 
   if (PrinterSettings.InstalledPrinters == null || PrinterSettings.InstalledPrinters.Count < 1) 
   { 
      MessageBox.Show("There are no printers installed on this machine"); 
      return; 
   } 
 
   // Load the image 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      this.myRasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif")); 
   } 
 
   // Create the print document object 
   using (PrintDocument document = new PrintDocument()) 
   { 
      // We will use the default printer with default settings 
 
      // Add handlers for Begin/Print and End print events 
      document.BeginPrint += new PrintEventHandler(printDocument_BeginPrint); 
      document.PrintPage += new PrintPageEventHandler(printDocument_PrintPage); 
      document.EndPrint += new PrintEventHandler(printDocument_EndPrint); 
 
      // Use the .NET print preview dialog 
      using (PrintPreviewDialog printPreviewDlg = new PrintPreviewDialog()) 
      { 
         printPreviewDlg.Document = document; 
         printPreviewDlg.WindowState = FormWindowState.Maximized; 
         printPreviewDlg.ShowDialog(); 
      } 
   } 
 
   // Clean up 
   this.myRasterImage.Dispose(); 
} 
 
private void printDocument_BeginPrint(object sender, PrintEventArgs e) 
{ 
   // Reset the current page number 
   // Since we are using the print preview dialog, this event will be called twice (once 
   // to generate the print preview and once for actual printing). So, we must set this back 
   // to the first print page if we are going to print more than one page 
} 
 
private void printDocument_EndPrint(object sender, PrintEventArgs e) 
{ 
   // Nothing to do here 
} 
 
private void printDocument_PrintPage(object sender, PrintPageEventArgs e) 
{ 
   // Get the print document object 
   PrintDocument document = sender as PrintDocument; 
 
   // Create an new LEADTOOLS image printer class 
   RasterImagePrinter printer = new RasterImagePrinter(); 
 
   // Set the document object so page calculations can be performed 
   printer.PrintDocument = document; 
 
   // We are going to stretch the top-left corner of the image into the bottom-right corner of 
   // the page (using the page margins) 
 
   printer.SizeMode = RasterPaintSizeMode.Stretch; 
 
   // Align mode will not have an effect if size mode is "Stretch" 
   printer.HorizontalAlignMode = RasterPaintAlignMode.Near; 
   printer.VerticalAlignMode = RasterPaintAlignMode.Near; 
 
   // Account for FAX images that may have different horizontal and vertical resolution 
   printer.UseDpi = true; 
 
   // Print the top-left corner of the image 
   printer.ImageRectangle = new Rectangle( 
      0, 
      0, 
      this.myRasterImage.ImageWidth / 2, 
      this.myRasterImage.ImageHeight / 2); 
 
   // Use the margins 
   printer.UseMargins = true; 
 
   // Calculate the real margins 
   float xMargin = e.MarginBounds.X; 
   float yMargin = e.MarginBounds.Y; 
 
   if (!document.PrintController.IsPreview) 
   { 
      // Real printing (Not inside a .NET PrintPreview control), get the printer hard margins 
      xMargin -= document.DefaultPageSettings.HardMarginX; 
      yMargin -= document.DefaultPageSettings.HardMarginY; 
 
      // If you want to use the page bounds instead of the margins, use this to calculate it 
      // RectangleF pageBounds = e.PageBounds; 
      // pageBounds.Width -= document.DefaultPageSettings.HardMarginX * 2; 
      // pageBounds.Height -= document.DefaultPageSettings.HardMarginY * 2; 
   } 
   else 
   { 
      // If you want to use the page bounds instead of the margins, use this to calculate it 
      // RectangleF pageBounds = e.PageBounds; 
   } 
 
   // Print to the bottom right corner of the page including the margins 
   float destWidth = e.MarginBounds.Width / 2; 
   float destHeight = e.MarginBounds.Height / 2; 
   RectangleF marginBounds = new RectangleF(xMargin + destWidth, yMargin + destHeight, destWidth, destHeight); 
 
   printer.PageRectangle = marginBounds; 
 
   // Print the first current page 
   printer.Print(this.myRasterImage, 1, e); 
 
   // No more pages to print 
   e.HasMorePages = false; 
 
   // De-couple our PrintDocument from the RasterImagePrinter 
   printer.PrintDocument = null; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Controls 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
 
' The image we are printing 
Private myRasterImage As RasterImage = Nothing 
<TestMethod> 
Public Sub RasterImagePrinterExample2() 
   ' Check if there are printers installed on this machine 
   If PrinterSettings.InstalledPrinters Is Nothing OrElse PrinterSettings.InstalledPrinters.Count < 1 Then 
      MessageBox.Show("There are no printers installed on this machine") 
      Return 
   End If 
 
   ' Load the image 
   Using codecs As RasterCodecs = New RasterCodecs() 
      Me.myRasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif")) 
   End Using 
 
   ' Create the print document object 
   Using document As PrintDocument = New PrintDocument() 
      ' We will use the default printer with default settings 
 
      ' Add handlers for Begin/Print and End print events 
      AddHandler document.BeginPrint, AddressOf printDocument_BeginPrint 
      AddHandler document.PrintPage, AddressOf printDocument_PrintPage 
      AddHandler document.EndPrint, AddressOf printDocument_EndPrint 
 
      ' Use the .NET print preview dialog 
      Using printPreviewDlg As PrintPreviewDialog = New PrintPreviewDialog() 
         printPreviewDlg.Document = document 
         printPreviewDlg.WindowState = FormWindowState.Maximized 
         printPreviewDlg.ShowDialog() 
      End Using 
   End Using 
 
   ' Clean up 
   Me.myRasterImage.Dispose() 
End Sub 
 
Private Sub printDocument_BeginPrint(ByVal sender As Object, ByVal e As PrintEventArgs) 
   ' Reset the current page number 
   ' Since we are using the print preview dialog, this event will be called twice (once 
   ' to generate the print preview and once for actual printing). So, we must set this back 
   ' to the first print page if we are going to print more than one page 
End Sub 
 
Private Sub printDocument_EndPrint(ByVal sender As Object, ByVal e As PrintEventArgs) 
   ' Nothing to do here 
End Sub 
 
Private Sub printDocument_PrintPage(ByVal sender As Object, ByVal e As PrintPageEventArgs) 
   ' Get the print document object 
   Dim document As PrintDocument = TryCast(sender, PrintDocument) 
 
   ' Create an new LEADTOOLS image printer class 
   Dim printer As RasterImagePrinter = New RasterImagePrinter() 
 
   ' Set the document object so page calculations can be performed 
   printer.PrintDocument = document 
 
   ' We are going to stretch the top-left corner of the image into the bottom-right corner of 
   ' the page (using the page margins) 
 
   printer.SizeMode = RasterPaintSizeMode.Stretch 
 
   ' Align mode will not have an effect if size mode is "Stretch" 
   printer.HorizontalAlignMode = RasterPaintAlignMode.Near 
   printer.VerticalAlignMode = RasterPaintAlignMode.Near 
 
   ' Account for FAX images that may have different horizontal and vertical resolution 
   printer.UseDpi = True 
 
   ' Print the top-left corner of the image 
   printer.ImageRectangle = New Rectangle(0, 0, Me.myRasterImage.ImageWidth \ 2, Me.myRasterImage.ImageHeight \ 2) 
 
   ' Use the margins 
   printer.UseMargins = True 
 
   ' Calculate the real margins 
   Dim xMargin As Single = e.MarginBounds.X 
   Dim yMargin As Single = e.MarginBounds.Y 
 
   If (Not document.PrintController.IsPreview) Then 
      ' Real printing (Not inside a .NET PrintPreview control), get the printer hard margins 
      xMargin -= document.DefaultPageSettings.HardMarginX 
      yMargin -= document.DefaultPageSettings.HardMarginY 
 
      ' If you want to use the page bounds instead of the margins, use this to calculate it 
      ' RectangleF pageBounds = e.PageBounds; 
      ' pageBounds.Width -= document.DefaultPageSettings.HardMarginX * 2; 
      ' pageBounds.Height -= document.DefaultPageSettings.HardMarginY * 2; 
   Else 
      ' If you want to use the page bounds instead of the margins, use this to calculate it 
      ' RectangleF pageBounds = e.PageBounds; 
   End If 
 
   ' Print to the bottom right corner of the page including the margins 
   Dim destWidth As Single = e.MarginBounds.Width \ 2 
   Dim destHeight As Single = e.MarginBounds.Height \ 2 
   Dim marginBounds As RectangleF = New RectangleF(xMargin + destWidth, yMargin + destHeight, destWidth, destHeight) 
 
   printer.PageRectangle = marginBounds 
 
   ' Print the first current page 
   printer.Print(Me.myRasterImage, 1, e) 
 
   ' No more pages to print 
   e.HasMorePages = False 
 
   ' De-couple our PrintDocument from the RasterImagePrinter 
   printer.PrintDocument = Nothing 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class