com.gnostice.pdfone

Interface PdfSaveAsImageHandler

All Known Implementing Classes:

PdfSaveAsImageAdapter

public interface PdfSaveAsImageHandler

This interface defines a run-time event that is generated when an overloaded PdfDocument.saveAsImage() method tries to save the image of a page. User classes can implement this interface to track or control how images are saved.

import java.io.IOException;

import com.gnostice.pdfone.PDFOne;
import com.gnostice.pdfone.PdfDocument;
import com.gnostice.pdfone.PdfException;
import com.gnostice.pdfone.PdfReader;
import com.gnostice.pdfone.PdfSaveAsImageHandler;

public class PdfSaveAsImageHandler_Example implements
    PdfSaveAsImageHandler
{
    static
    {
        PDFOne.activate("T95VZE:W8HBPVA:74VQ8QV:LO4V8",
            "9B1HRZAP:X5853ERNE:5EREMEGRQ:TX1R10");
    }

    public static void main(String args[]) throws IOException,
        PdfException
    {
        // Read document passed in command line
        PdfReader reader = PdfReader.fileReader(args[0]);
        PdfDocument doc1 = new PdfDocument(reader);

        // Specify object implementing onSaveAsImage() event 
        doc1.setSaveAsImageHandler(
            new PdfSaveAsImageHandler_Example());

        // Save pages 1 and 2 of the read document as images
        doc1.saveAsImage("jpg", "1,2", "image_of_page_#", ".");

        reader.dispose();
    }

    // Append page number to the names of the images 
    public void onSaveAsImage(PdfDocument pdfDocument, int pageNum,
        StringBuffer imageName, StringBuffer outputPath)
    {
        imageName = imageName.append(String.valueOf(pageNum));
    }

}

Method Summary

Modifier and Type	Method and Description
void	onSaveAsImage(PdfDocument pdfDocument, int pageNum, StringBuffer imageName, StringBuffer outputPath) Called by an overloaded PdfDocument.saveAsImage() method when it tries to save an image of a page or several pages.

Method Detail

onSaveAsImage

void onSaveAsImage(PdfDocument pdfDocument,
                   int pageNum,
                   StringBuffer imageName,
                   StringBuffer outputPath)

Called by an overloaded PdfDocument.saveAsImage() method when it tries to save an image of a page or several pages. User classes implementing this interface can handle this event to make further changes to imageName and outputPath at run time.

Parameters:

pdfDocument - document from which image is saved

pageNum - number of the page whose image is saved

imageName - name of the image

outputPath - path of location where the image is saved