PDFlib サンプル集(クックブック)
本サンプルプログラムは、PDF 文書生成ライブラリーの実装である PDFlib の基本的な機能を実際のプログラムで紹介したものです。
本サイトでダウンロードした PDFlib は、一部機能の制限を除き、評価版として無償でお使いいただけます。
Type 3 ビットマップテキスト
PDFlib で、イメージデータから簡単な Type 3 フォントを作成するサンプルプログラムです。
inline オプションを load_image 関数に指定してビットマップグリフをロードします。
/* $Id: type3_bitmaptext.java,v 1.10 2013/01/15 10:11:58 stm Exp $
* 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
*/
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 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 + " $Revision: 1.10 $");
/* 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", "winansi", "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.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();
}
}
}
}
(Apr 3, 2007 - Feb 20, 2014)