PDFlib Cookbook

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type3_fonts/type3_bitmaptext

Create a simple Type 3 font from image data.

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/*
 * Type 3 bitmap text:
 * Create a simple Type 3 font from image data
 *
 * Use the "inline" option of load_image() for loading glyph bitmaps.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: image files
 */
package com.pdflib.cookbook.pdflib.type3_fonts;

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

public class type3_bitmaptext
{
    public static void main (String argv[])
    {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "type3_bitmaptext.pdf";
        String title = "Type 3 Bitmap Text";

        pdflib p = null;
        int image;
        int bitmapfont;
        String optlist = "inline bpc=1 components=1 height=16 width=8 mask invert";
        int exitcode = 0;

        int data[][] =
        {{0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x84, 0x04, 0x7C, 0x84, 0x84, 0x8C,
          0x76, 0x00, 0x00, 0x00}, /* "a" */
         {0x00, 0x00, 0xC0, 0x40, 0x40, 0x5C, 0x62, 0x42, 0x42, 0x42, 0x42, 0x62,
         0xDC, 0x00, 0x00, 0x00},  /* "b" */
         {0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x42, 0x40, 0x40, 0x40, 0x42, 0x42,
          0x3C, 0x00, 0x00, 0x00}}; /* "c" */

        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);

            /* From the data defining three glyphs, create three PVFs
             * "/pvf/font/bitmap0" ... "/pvf/font/bitmap2"
             */
            byte [] glyphdef = new byte[data[0].length];

            for (int i=0; i < 3; i++) {
                for (int j=0; j < data[0].length; j++)
                    glyphdef[j] = (byte) data[i][j];

                p.create_pvf("/pvf/font/bitmap" + i, glyphdef, "");
            }

            /* Create the "BitmapFont" font */
            p.begin_font("BitmapFont", 1/16.0, 0, 0, 1/16.0, 0, -3/16.0, "");

            /* Start the glyph definition for "a" */
            p.begin_glyph_ext(0x0061, "width=8 boundingbox={0 0 8 16}");

            /* Load the bitmap data for the glyph from the PVF.
             * The "inline" option is provided so that load_image() will internally
             * perform the equivalent of fit_image(image, 0, 0, "") and
             * close_image(image).
             */
            image = p.load_image("raw", "/pvf/font/bitmap0", optlist);
            if (image == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.end_glyph();

            /* Define the glyph "b" */
            p.begin_glyph_ext(0x0062, "width=8 boundingbox={0 0 8 16}");

            image = p.load_image("raw", "/pvf/font/bitmap1", optlist);
            if (image == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.end_glyph();

            /* Define the glyph "c" */
            p.begin_glyph_ext(0x0063, "width=8 boundingbox={0 0 8 16}");

            image = p.load_image("raw", "/pvf/font/bitmap2", optlist);
            if (image == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.end_glyph();

            /* The .notdef (fallback) glyph should be contained in all Type 3
             * fonts to avoid problems with some PDF viewers. It is usually
             * empty.
             */
            p.begin_glyph_ext(0x0000, "width=8 boundingbox={0 0 8 16}");
            p.end_glyph();

            p.end_font();

            p.begin_page_ext(0, 0, "width=200 height=300");

            /* Load the new "BitmapFont" font */
            bitmapfont = p.load_font("BitmapFont", "unicode", "embedding");
            if (bitmapfont == -1)
                throw new Exception("Error: " + p.get_errmsg());

            /* Output the characters "a", "b", and "c" */
            p.fit_textline("a", 70, 200, "font=" + bitmapfont + " fontsize=36");
            p.fit_textline("b", 70, 150, "font=" + bitmapfont + " fontsize=36");
            p.fit_textline("c", 70, 100, "font=" + bitmapfont + " fontsize=36");

            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);
        }
    }
}