Rotate Method

Summary

Rotates the specified pages.

Syntax

C++/CLI

Python

public void Rotate( 
   int angle, 
   int firstPageNumber, 
   int lastPageNumber 
)

public:  
   void Rotate( 
      Int32 angle, 
      Int32 firstPageNumber, 
      Int32 lastPageNumber 
   )

def Rotate(self,angle,firstPageNumber,lastPageNumber):

Parameters

angle

Rotation angle in degrees. Positive values will rotate the pages clockwise and negative values will rotate the pages counter-clockwise. Must be in increment of 90 degrees.

firstPageNumber

1-based first page number in the document. This value must be greater than or equal to 1.

lastPageNumber

1-based last page number in the document. This value must be greater or equal to firstPageNumber. A value of -1 means the last page in the document.

Remarks

This method loops through all the pages specified and calls DocumentPage.Rotate. For more information, refer to Document Page Transformation.

Example

using Leadtools.Document; 
using Leadtools.Document.Converter; 
using Leadtools.Document.Writer; 
 
 
public void DocumentPageRotateExample() 
{ 
   var documentUri = new Uri("https://demo.leadtools.com/images/pdf/leadtools.pdf"); 
   string documentFile = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"); 
 
   // Load this document 
   var loadDocumentOptions = new LoadDocumentOptions(); 
   using (var document = DocumentFactory.LoadFromUri(documentUri, loadDocumentOptions)) 
   { 
      // Documents are read-only by default and we cannot modify them. Fix that 
      document.IsReadOnly = false; 
 
      DocumentPage page; 
 
      // This document has 5 pages 
 
      // Rotate the page by 90 degrees clockwise 
      page = document.Pages[0]; 
      page.Rotate(90); 
      // Flip the second page vertically 
      page = document.Pages[1]; 
      page.Flip(); 
      // Delete the third page 
      page = document.Pages[2]; 
      page.IsDeleted = true; 
      // Reverse the fourth page 
      page = document.Pages[3]; 
      page.Reverse(); 
 
      // Set the view perspective 
      page.ViewPerspective = Leadtools.RasterViewPerspective.TopLeft; 
 
      // we will save it as a new PDF, this file should contain 4 pages with the first rotated by 90 and the second flipped vertically 
      using (var documentConverter = new DocumentConverter()) 
      { 
         var jobData = new DocumentConverterJobData(); 
         // The loaded document is our input 
         jobData.Document = document; 
         // We want PDF as output 
         jobData.DocumentFormat = DocumentFormat.Pdf; 
         // Into this file 
         jobData.OutputDocumentFileName = documentFile; 
 
         var job = documentConverter.Jobs.CreateJob(jobData); 
         documentConverter.Jobs.RunJob(job); 
      } 
   } 
 
   // Show the result 
   Process.Start(documentFile); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

DocumentPages Class

DocumentPages Members

Leadtools.Document Namespace

Download our FREE evaluation

Help Version 22.0.2023.4.21