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images/image_dimensions

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/* $Id: image_dimensions.java,v 1.9 2014/01/30 14:05:25 rjs Exp $

 * Image dimensions:

 * Get the dimensions of an image for various purposes

 *

 * Place an image in its original size, retrieve its dimensions using the

 * "matchbox" option and place text directly to the right of the image. Fit an

 * image into a box and use the box dimensions to center text directly below

 * the image. Create a page with the dimensions of an image and place the image

 * so that it covers the page completely.

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 9

 * Required data: image file

 */

package com.pdflib.cookbook.pdflib.images;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class image_dimensions

{

    public static void main (String argv[])

    {

        /* This is where the data files are. Adjust as necessary. */

        String searchpath = "../input";

        String outfile = "image_dimensions.pdf";

        String title = "Image Dimensions";


        pdflib p = null;

        int exitcode = 0;

        String imagefile = "websurfer.jpg";

        String imagefile2 = "nesrin.jpg";

        int font, image;

        double x2 = 0.0, y2 = 0.0, y3 = 0.0;

        double imagewidth, imageheight;


        try {

            p = new pdflib();


            p.set_option("searchpath={" + searchpath + "}");


            /* This means we must check return values of load_font() etc. */

            p.set_option("errorpolicy=return");


            if (p.begin_document(outfile, "") == -1)

                throw new Exception("Error: " + p.get_errmsg());


            p.set_info("Creator", "PDFlib Cookbook");

            p.set_info("Title", title + " $Revision: 1.9 $");


            /* On page 1, place an image in its original size, retrieve its

             * dimensions using the "matchbox" option and place text directly

             * to the right of the image

             */

            p.begin_page_ext(0, 0, "width=100 height=100");


            /* Load the image */

            image = p.load_image("auto", imagefile, "");

            if (image == -1)

                throw new Exception("Error: " + p.get_errmsg());


            /* Fit the image with a matchbox called "web" respresenting

             * the image dimensions */

            p.fit_image(image, 20, 20, "matchbox={name=web}");

            p.close_image(image);


            /* Retrieve the coordinates of the lower right (x2, y2) and upper right

             * (x3, Y3) image corners via the matchbox "web" specified above

             */

            if ((int) p.info_matchbox("web", 1, "exists") == 1)

            {

                x2 = p.info_matchbox("web", 1, "x2");

                y2 = p.info_matchbox("web", 1, "y2");

                y3 = p.info_matchbox("web", 1, "y3");

            }


            font = p.load_font("Helvetica", "unicode", "");

            if (font == -1)

                throw new Exception("Error: " + p.get_errmsg());


            /* Start the text line in x direction at the lower right corner of the

             * image and in y direction 1/4 of the image height up

             */

            p.fit_textline("www.kraxi.com", x2, y2 + (y3 - y2)/4, "font=" + font +

                " fontsize=8");


            p.end_page_ext("");


            /* On page 2, fit an image into a box and use the box dimensions to

             * center text directly below the image

             */

            p.begin_page_ext(0, 0, "width=100 height=100");


            /* Load the image */

            image = p.load_image("auto", imagefile2, "");

            if (image == -1)

                throw new Exception("Error: " + p.get_errmsg());


            /* Fit the image with a matchbox called "web" respresenting

             * the image dimension

             */

            p.fit_image(image, 10, 20, "boxsize={80 50} position={center bottom} " +

                "fitmethod=meet");

            p.close_image(image);


            font = p.load_font("Helvetica", "unicode", "");

            if (font == -1)

                throw new Exception("Error: " + p.get_errmsg());


            /* Start the text line in x direction at the lower right corner of the

             * image and in y direction 1/4 of the image height up

             */

            p.fit_textline("My holiday photo", 10, 10,

                "boxsize={80 50} position={center bottom} font=" + font +

                " fontsize=8");


            p.end_page_ext("");


            /* Create page 3 with the original dimensions of the image and place

             * the image so that it covers the page completely

             *

             * Load the image

             */

            image = p.load_image("auto", imagefile2, "");

            if (image == -1)

                throw new Exception("Error: " + p.get_errmsg());


            /* Get the width and height of the image */

            imagewidth = p.info_image(image, "imagewidth", "");

            imageheight = p.info_image(image, "imageheight", "");


            /* Start page 3 with the dimensions of the image to be placed */

            p.begin_page_ext(imagewidth, imageheight, "");


            /* Fit the image */

            p.fit_image(image, 0, 0, "");


            p.close_image(image);


            p.end_page_ext("");


            p.end_document("");


        } catch (PDFlibException e) {

            System.err.print("PDFlib exception occurred:\n");

            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +

                ": " + e.get_errmsg() + "\n");

            exitcode = 1;

        } catch (Exception e) {

            System.err.println(e.getMessage());

            exitcode = 1;

        } finally {

            if (p != null) {

                p.delete();

            }

            System.exit(exitcode);

        }

    }

}