PDFlib Cookbook

cookbook

text_output/shadowed_text

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/* $Id: shadowed_text.java,v 1.4 2013/01/15 10:12:08 stm Exp $
 * Shadowed text:
 * Create a shadowed text line
 * 
 * To create a shadowed text line use the "shadow" option of fit_textline() and
 * the suboptions "offset" for setting the position, "fillcolor" for defining 
 * the color, and "gstate" for applying advanced graphics settings for the
 * shadow.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: image file
 */
package com.pdflib.cookbook.pdflib.text_output;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class shadowed_text {
    public static void main(String argv[]) {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "shadowed_text.pdf";
        String title = "Shadowed Text";

        pdflib p = null;

        final String imagefile = "cambodia_bayon3.jpg";
        final String text = "the faces of Bayon";

        final int x1 = 20, x2 = 360, yoff = 60;
        int y = 550;

        String shadow_opts, smallfont_opts, bigfont_opts, color_opts;
        int image, gstate;
        int normalfont, boldfont;
        int bigfontsize = 35, smallfontsize = 15;

        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: 1.4 $");

            normalfont = p.load_font("Helvetica", "unicode", "");
            if (normalfont == -1)
                throw new Exception("Error: " + p.get_errmsg());

            boldfont = p.load_font("Helvetica-Bold", "unicode", "");
            if (boldfont == -1)
                throw new Exception("Error: " + p.get_errmsg());

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

            /* Start page */
            p.begin_page_ext(842, 595, "");

            /* Define general options for small and big fonts */
            smallfont_opts = "font=" + normalfont + " fontsize="
                + smallfontsize + " ";
            bigfont_opts = "font=" + boldfont + " fontsize=" + bigfontsize
                + " ";

            /* Ouput a heading */
            p.fit_textline("Output of fit_textline()", x1, y, smallfont_opts);
            p.fit_textline("Options of fit_textline()", x2, y, smallfont_opts);

            /*
             * ------------------------------------------------------ Output
             * shadowed text with default shadow option values
             * ------------------------------------------------------
             */
            shadow_opts = "shadow={} ";
            p.fit_textline(text, x1, y -= yoff, bigfont_opts + shadow_opts);

            /* Output a description of the shadow options */
            p.fit_textline(shadow_opts, x2, y + bigfontsize / 4,
                    smallfont_opts);

            /*
             * -------------------------------------------------------------
             * Output shadowed text with varied offset (Default is {5% -5%})
             * -------------------------------------------------------------
             */
            shadow_opts = "shadow={offset={10% 8%}} ";
            p.fit_textline(text, x1, y -= yoff, bigfont_opts + shadow_opts);

            /* Output a description of the shadow options */
            p.fit_textline(shadow_opts, x2, y + bigfontsize / 4,
                    smallfont_opts);

            /* Output shadowed text with default shadow option values */
            shadow_opts = "shadow={offset={-10% 8%}} ";
            p.fit_textline(text, x1, y -= yoff, bigfont_opts + shadow_opts);

            /* Output a description of the shadow options */
            p.fit_textline(shadow_opts, x2, y + bigfontsize / 4,
                    smallfont_opts);

            /* Output shadowed text with default shadow option values */
            shadow_opts = "shadow={offset={-10% -8%}} ";
            p.fit_textline(text, x1, y -= yoff, bigfont_opts + shadow_opts);

            /* Output a description of the shadow options */
            p.fit_textline(shadow_opts, x2, y + bigfontsize / 4,
                    smallfont_opts);

            /*
             * ------------------------------------------- Output shadowed text
             * with varied fill color
             * -------------------------------------------
             */
            shadow_opts = "shadow={fillcolor={rgb 0.28 0.81 0.8} offset={10% -10%}} ";

            color_opts = "fillcolor={rgb 0 0.5 0.52}";
            p.fit_textline(text, x1, y -= yoff, bigfont_opts + shadow_opts
                + color_opts);

            /* Output the shadow options */
            p.fit_textline(shadow_opts, x2, y + bigfontsize / 4,
                    smallfont_opts);

            /*
             * Save the current graphics state. The save/restore of the current
             * state is not necessarily required, but it will help you get back
             * to a graphics state without any transparency.
             */
            p.save();

            /* Output a background image */
            p.fit_image(image, x1, 50, "boxsize={170 170} fitmethod=meet");

            /*
             * Create an extended graphics state with transparency set to 50%,
             * using create_gstate() with the "opacityfill" option set to 0.5.
             */
            gstate = p.create_gstate("opacityfill=.5");

            /*
             * Display some white shadowed text which will be transparent
             * according to the graphics state supplied
             */
            shadow_opts = "shadow={fillcolor={rgb 0.87 0.72 0.52} "
                + "offset={8% -8%}} gstate=" + gstate;

            color_opts = " fillcolor={rgb 1 1 1}";

            p.fit_textline("the", x1, 185, bigfont_opts + shadow_opts
                + color_opts);
            p.fit_textline("faces", x1, 145, bigfont_opts + shadow_opts
                + color_opts);
            p.fit_textline("of", x1, 105, bigfont_opts + shadow_opts
                + color_opts);
            p.fit_textline("Bayon", x1, 65, bigfont_opts + shadow_opts
                + color_opts);

            /* Restore the current graphics state */
            p.restore();

            /* Output the shadow options */
            p.fit_textline(shadow_opts, x2, 145, smallfont_opts);
            p.fit_textline("(gstate is created with \"opacityfill=.5\")", x2,
                115, smallfont_opts);

            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.toString());
        }
        finally {
            if (p != null) {
                p.delete();
            }
        }
    }
}