ConvertImageToPdf.java

package com.aspose.words.examples.loading_saving;

import com.aspose.words.*;
import com.aspose.words.examples.Utils;

import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import java.awt.image.BufferedImage;
import java.io.File;


public class ConvertImageToPdf {
    public static void main(String[] args) throws Exception {
        /**
         * Converts an image to PDF using Aspose.Words for Java.
         *
         * @param inputFileName File name of input image file.
         * @param outputFileName Output PDF file name.
         */

        String dataDir = Utils.getDataDir(ConvertImageToPdf.class);
        String inputFileName = dataDir + "Test.bmp";
        String outputFileName = dataDir + "output.pdf";

        // Create Aspose.Words.Document and DocumentBuilder.
        // The builder makes it simple to add content to the document.
        Document doc = new Document();
        DocumentBuilder builder = new DocumentBuilder(doc);

        // Load images from the disk using the approriate reader.
        // The file formats that can be loaded depends on the image readers available on the machine.
        ImageInputStream iis = ImageIO.createImageInputStream(new File(inputFileName));
        ImageReader reader = ImageIO.getImageReaders(iis).next();
        reader.setInput(iis, false);
        // Get the number of frames in the image.
        int framesCount = reader.getNumImages(true);

        // Loop through all frames.
        for (int frameIdx = 0; frameIdx < framesCount; frameIdx++) {
            // Insert a section break before each new page, in case of a multi-frame image.
            if (frameIdx != 0)
                builder.insertBreak(BreakType.SECTION_BREAK_NEW_PAGE);

            // Select active frame.
            BufferedImage image = reader.read(frameIdx);

            // We want the size of the page to be the same as the size of the image.
            // Convert pixels to points to size the page to the actual image size.
            PageSetup ps = builder.getPageSetup();

            ps.setPageWidth(ConvertUtil.pixelToPoint(image.getWidth()));
            ps.setPageHeight(ConvertUtil.pixelToPoint(image.getHeight()));

            // Insert the image into the document and position it at the top left corner of the page.
            builder.insertImage(
                    image,
                    RelativeHorizontalPosition.PAGE,
                    0,
                    RelativeVerticalPosition.PAGE,
                    0,
                    ps.getPageWidth(),
                    ps.getPageHeight(),
                    WrapType.NONE);

            doc.save(outputFileName);
        }
    }
}