Rotates the specified pages.
public void Rotate(
int angle,
int firstPageNumber,
int lastPageNumber
)
public:
void Rotate(
Int32 angle,
Int32 firstPageNumber,
Int32 lastPageNumber
)
def Rotate(self,angle,firstPageNumber,lastPageNumber):
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.
This method loops through all the pages specified and calls DocumentPage.Rotate. For more information, refer to Document Page Transformation.
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:\LEADTOOLS23\Resources\Images";
}
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import static org.junit.Assert.assertTrue;
import org.junit.*;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
import leadtools.LTLibrary;
import leadtools.Platform;
import leadtools.RasterDefaults;
import leadtools.RasterViewPerspective;
import leadtools.codecs.RasterCodecs;
import leadtools.document.*;
import leadtools.document.converter.*;
import leadtools.document.writer.DocumentFormat;
public void documentPageRotateExample() throws IOException, URISyntaxException {
final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images";
Platform.loadLibrary(LTLibrary.DOCUMENT_WRITER);
URI documentUri = new URI("https://demo.leadtools.com/images/pdf/leadtools.pdf");
String documentFile = combine(LEAD_VARS_IMAGES_DIR, "PagesModified.pdf");
int availableProcessors = Runtime.getRuntime().availableProcessors();
ExecutorService pool = Executors.newFixedThreadPool(availableProcessors);
RasterDefaults.setExecutorService(pool);
// Load this document
LoadDocumentOptions loadDocumentOptions = new LoadDocumentOptions();
LEADDocument document = DocumentFactory.loadFromUri(documentUri, loadDocumentOptions);
// Documents are read-only by default and we cannot modify them. Fix that
document.setReadOnly(false);
DocumentPage page;
// Rotate the page by 90 degrees clockwise
page = document.getPages().get(0);
page.rotate(90);
// Flip the second page vertically
page = document.getPages().get(1);
page.flip();
// Delete the third page
page = document.getPages().get(2);
page.setDeleted(true);
// Reverse the fourth page
page = document.getPages().get(3);
page.reverse();
// Set the view perspective
page.setViewPerspective(RasterViewPerspective.TOP_LEFT);
// 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
DocumentConverter documentConverter = new DocumentConverter();
DocumentConverterJobData jobData = new DocumentConverterJobData();
// The loaded document is our input
jobData.setDocument(document);
// We want PDF as output
jobData.setDocumentFormat(DocumentFormat.PDF);
// Into this file
jobData.setOutputDocumentFileName(documentFile);
DocumentConverterJob job = documentConverter.getJobs().createJob(jobData);
documentConverter.getJobs().runJob(job);
// Show the result
if (job.getErrors().isEmpty()) {
System.out.println("Converted successfully to " + documentFile);
} else {
for (DocumentConverterJobError e : job.getErrors())
System.out.println(e.getError());
}
document.dispose();
documentConverter.dispose();
System.out.println("Document pages modified and saved to: " + documentFile);
assertTrue(job.getErrors().isEmpty());
}
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