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Unit 12: Portable Document Format

Notes
Figure 12.5: Lining, Stroking, Filling, and Coloring Text

Overlined Text
Underlined Text
Underlined strikeout Text
Red Text
Green Outlined Text
Green Outlined Blue Text

12.3.4 Fonts
There are 14 built-in fonts in PDF, as listed in Table 12.3. If you use only these fonts, the documents
you create will be smaller and more portable than if you use nonstandard fonts.

Table 12.3: Standard PDF Fonts

Courier Courier-Bold Courier-BoldOblique Courier-Oblique

Helvetica Helvetica-Bold Helvetica-BoldOblique Helvetica-Oblique
Times-Bold Times-BoldItalic Times-Italic Times-Roman
Symbol ZapfDingbats

You can select a font with the pdf_findfont( ) function:
$font = pdf_findfont(pdf, fontname, encoding, embed);
The encoding parameter indicates how the internal numeric codes for characters map onto the
font’s characters. The built-in encodings are “winansi” (Windows, a superset of ISO 8859-1, which
is itself a superset of ASCII), “macroman” (Macintosh), “ebcdic” (IBM mainframe), “builtin” (for
symbol fonts), and “host” (“macroman” on the Mac, “ebcdic” on EBCDIC-based systems, and
“winansi” on everything else). When using built-in fonts, stick to “host”.
You can load nonstandard fonts if you have the PostScript font metrics or TrueType files. If you
want to embed the nonstandard fonts in the PDF file, rather than using whatever fonts on the
viewer’s system most resemble them, set the embed parameter to 1. You do not need to embed
the standard fonts.
Using nonstandard fonts without embedding them makes your documents much less portable,
while embedding them makes your generated PDF files much larger. TrueType font files have
an indicator that is set if the font should not be embedded. This is honored by pdflib, which
produces an error if you try to embed such a font.

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