images/image_dimensions

 * 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 Lite/PDFlib/PDFlib+PDI/PPS 7

 * 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;

    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_parameter("SearchPath", searchpath);

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

        p.set_parameter("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: 1.5 $");

        /* 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");

        }

        /* For PDFlib Lite: change "unicode" to "winansi" */

        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);

        /* For PDFlib Lite: change "unicode" to "winansi" */

        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.get_value("imagewidth", image);

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

        /* 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");

        } catch (Exception e) {

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

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}