PDFlib Cookbook

cookbook

images/image_rounded_corners

Place an image with rounded corners.

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/*
 * Image with rounded corners:
 * Place an image with rounded corners
 *
 * Get the dimensions of an image and create a clipping path as a rectangle of
 * 0.5 of the width and height of the image and with rounded corners. Fit the
 * image into a box with the position and size of the clipping path.
 *
 * 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_rounded_corners
{
    public static void main (String argv[])
    {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "image_rounded_corners.pdf";
        String title = "Image with Rounded Corners";

        pdflib p = null;
        int exitcode = 0;
        String imagefile = "nesrin.jpg";
        int image;
        double width, height;   // width and height of the image
        int radius=50;          // radius of the circle describing a rounded corner
        int x=20, y=20;         // lower left position of the image

        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);

            /* Load image */
            image = p.load_image("auto", imagefile, "");
            if (image == -1)
                throw new Exception("Error: " + p.get_errmsg());

            /* Get the width and height of the image */
            width = p.info_image(image, "imagewidth", "");
            height = p.info_image(image, "imageheight", "");

            /* Start a page with the image dimensions */
            p.begin_page_ext(width, height, "");

            /* Save the current graphics state including the clipping path */
            p.save();

            /* Define a path as a rectangle of 0.5 of the original width and height
             * of the image and with rounded corners
             */
            width *= 0.5;
            height *= 0.5;

            p.moveto(x + radius, y);
            p.lineto(x + width - radius, y);
            p.arc(x + width - radius, y + radius, radius, 270, 360);
            p.lineto(x + width, y + height - radius );
            p.arc(x + width - radius, y + height - radius, radius, 0, 90);
            p.lineto(x + radius, y + height);
            p.arc(x + radius, y + height - radius, radius, 90, 180);
            p.lineto(x , y + radius);
            p.arc(x + radius, y + radius, radius, 180, 270);

            /* Set clipping path to defined path */
            p.clip();

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

            /* Fit the image into a box with the size and start point (x,y) of the
             * clipping path. The image is placed in the center of the box using a
             * fit method of "meet" which will scale the image proportionally until
             * it completely covers the box */
            p.fit_image(image, x, y, "boxsize {" + width + " " + height +
                "} position center fitmethod=meet");

            /* Close image and restore original clipping (no clipping) */
            p.close_image(image);
            p.restore();

            p.end_page_ext("");
            p.end_document("");

        } catch (PDFlibException e) {
            System.err.println("PDFlib exception occurred:");
            System.err.println("[" + e.get_errnum() + "] " + e.get_apiname() +
                                ": " + e.get_errmsg());
            exitcode = 1;
        } catch (Exception e) {
            System.err.println(e);
            exitcode = 1;
        } finally {
            if (p != null) {
                p.delete();
            }
            System.exit(exitcode);
        }
    }
}