VfCommandFontDef

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org.extex.font.format.vf.command
Class VfCommandFontDef

java.lang.Object
  org.extex.font.format.vf.command.VfCommand
      org.extex.font.format.vf.command.VfCommandFontDef

All Implemented Interfaces:: XMLWriterConvertible

public class VfCommandFontDef
extends VfCommand
extends VfCommand

VfCommand: fnt_def.

After the pre command, the preamble continues with font definitions; every font needed to specify 'actual' characters in later set_char commands is defined here. The font definitions are exactly the same in VF files as they are in DVI files, except that the scaled size s is relative and the design size d is absolute:

    fnt_def1   243  k[1]  c[4]  s[4]  d[4]  a[1]  l[1]  n[a+l]

Define font k, where 0 <= k < 256.

    fnt_def2   244  k[2]  c[4]  s[4]  d[4]  a[1]  l[1]  n[a+l]

Define font k, where 0 <= k < 65536.

    fnt_def3   245  k[3]  c[4]  s[4]  d[4]  a[1]  l[1]  n[a+l]

Define font k, where 0 <= k < 2^24

    fnt_def4   246  k[4]  c[4]  s[4]  d[4]  a[1]  l[1]  n[a+l]

Define font k, where -2^31 <= k <= 2^31.

These font numbers k are 'local'; they have no relation to font numbers defined in the DVI file that uses this virtual font. The dimension s, which represents the scaled size of the local font being defined, is a fix_word relative to the design size of the virtual font. Thus if the local font is to be used at the same size as the design size of the virtual font itself, s will be the integer value 2^20. The value of s must be positive and less than 2^24 (thus less than 16 when considered as a fix_word). The dimension d is a fix_word in units of printer's points; hence it is identical to the design size found in the corresponding TFM file.

The four-byte value c is the check sum. Parameter s contains a fixed-point scale factor that is applied to the character widths in font k; font dimensions in TFM files and other font files are relative to this quantity, which is always positive and less than 227. It is given in the same units as the other dimensions of the DVI file. Parameter d is similar to s; it is the design size, and (like s) it is given in DVI units. Thus, font k is to be used at mag s/1000d times its normal size. The remaining part of a font definition gives the external name of the font, which is an ASCII string of length a + l. The number a is the length of the area or directory, and l is the length of the font name itself; the standard local system font area is supposed to be used when a = 0. The n field contains the area in its first a bytes.

Version:: $Revision: 6082 $
Author:: Michael Niedermair

Field Summary

Fields inherited from class org.extex.font.format.vf.command.VfCommand
`FNT_DEF_1, FNT_DEF_2, FNT_DEF_3, FNT_DEF_4, MAX_CHARACTER, MIN_CHARACTER, POST, PRE, SHIFT16, SHIFT8`

Constructor Summary
`VfCommandFontDef(Localizer localizer, RandomAccessR rar, int ccode)` Create e new object.

Method Summary
`int`	`getChecksum()` Getter for checksum.
`TfmFixWord`	`getDesignsize()` Getter for designsize.
`FixedDimen`	`getDesignsizeAsDimen()` Returns the designsize as `Dimen`.
`java.lang.String`	`getFontname()` Getter for fontname.
`int`	`getFontnumbers()` Getter for fontnumbers.
`TfmFixWord`	`getScalefactor()` Getter for scalefactor.
`FixedCount`	`getScalefactorAsCount()` Return the scalefactor as `Count`.
`void`	`writeXML(XMLStreamWriter writer)` Write the data to a XMLStreamWriter.

Methods inherited from class org.extex.font.format.vf.command.VfCommand
`getCommandCode, getInstance, getLocalizer`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail