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/*++
Copyright (c) 1996-1999 Microsoft Corporation
Module Name:
sf_pcl.h
Abstract:
Structures etc used to define PCL Softfont file format.
[Environment:]
Win32 subsystem, printer drivers
Revision History:
03/05/97 -ganeshp- Created it.
--*/
/*
* A structure corresponding to the layout of Font Descriptor for a PCL * soft font file. The Font Descriptor is at the beginning of the file, * and contains overall font info. * * Note that there are several different versions of this structure; * the first is the original (pre LJ4) format, while the second is * the LJ4 introduced variety that allows specifying the resolution * at which the font was digitised. This is used for downloading TT * fonts etc. which are generated at the graphics resolution. * * NOTE: The data layout is designed for the 68000 family - which is * big endian. So, an amount of shuffling is required for little * endian machines like the x86. */
typedef signed char SBYTE;
#define SFH_NM_SZ 16 /* Bytes allowed in name field */
typedef struct{ WORD wSize; /* Number of bytes in here */ BYTE bFormat; /* Format: original, TT, intellifont, etc */ BYTE bFontType; /* 7, 8 or PC-8 style font */ WORD wRes1; /* Reserved */ WORD wBaseline; /* Baseline to cell top, PCL dots */ WORD wCellWide; /* Cell width in dots */ WORD wCellHeight; /* Cell height in dots */ BYTE bOrientation; /* Orientation: 0 portrait, 1 Landscape */ BYTE bSpacing; /* 0 fixed pitch, 1 proportional */ WORD wSymSet; /* Symbol set, using HP encoding */ WORD wPitch; /* Pitch in quarter dot units == HMI */ WORD wHeight; /* Design height in quarter dot units */ WORD wXHeight; /* Design height, quarter dots, of x */ SBYTE sbWidthType; /* Relative width of glyphs */ BYTE bStyle; /* 0 for regular, 1 for italic */ SBYTE sbStrokeW; /* Stroke weight; -7 (thin) to +7 (thick) */ BYTE bTypeface; /* Typeface ID - predefined types */ BYTE bRes2; BYTE bSerifStyle; /* Serif style; predefined values */ WORD wRes3; SBYTE sbUDist; /* Underline distance from baseline */ BYTE bUHeight; /* Underline height */ WORD wTextHeight; /* Quarter dot interline spacing */ WORD wTextWidth; /* Quarter dot glyph increment */ WORD wRes4; WORD wRes5; BYTE bPitchExt; /* Additional pitch resolution */ BYTE bHeightExt; /* Ditto, for height */ WORD wRes6; WORD wRes7; WORD wRes8; char chName[ SFH_NM_SZ ]; /* May not be null terminated! */} SF_HEADER;
typedef struct{ WORD wSize; /* Number of bytes in here */ BYTE bFormat; /* Format: original, TT, intellifont, etc */ BYTE bFontType; /* 7, 8 or PC-8 style font */ WORD wRes1; /* Reserved */ WORD wBaseline; /* Baseline to cell top, PCL dots */ WORD wCellWide; /* Cell width in dots */ WORD wCellHeight; /* Cell height in dots */ BYTE bOrientation; /* Orientation: 0 portrait, 1 Landscape */ BYTE bSpacing; /* 0 fixed pitch, 1 proportional */ WORD wSymSet; /* Symbol set, using HP encoding */ WORD wPitch; /* Pitch in quarter dot units == HMI */ WORD wHeight; /* Design height in quarter dot units */ WORD wXHeight; /* Design height, quarter dots, of x */ SBYTE sbWidthType; /* Relative width of glyphs */ BYTE bStyle; /* 0 for regular, 1 for italic */ SBYTE sbStrokeW; /* Stroke weight; -7 (thin) to +7 (thick) */ BYTE bTypeface; /* Typeface ID - predefined types */ BYTE bRes2; BYTE bSerifStyle; /* Serif style; predefined values */ WORD wRes3; SBYTE sbUDist; /* Underline distance from baseline */ BYTE bUHeight; /* Underline height */ WORD wTextHeight; /* Quarter dot interline spacing */ WORD wTextWidth; /* Quarter dot glyph increment */ WORD wRes4; WORD wRes5; BYTE bPitchExt; /* Additional pitch resolution */ BYTE bHeightExt; /* Ditto, for height */ WORD wRes6; WORD wRes7; WORD wRes8; char chName[ SFH_NM_SZ ]; /* May not be null terminated! */ WORD wXResn; /* X resolution of font design */ WORD wYResn; /* Y design resolution */} SF_HEADER20;
/*
* Typical values used above to identify different types of fonts. */
#define PCL_FM_ORIGINAL 0 /* Bitmap font, digitised at 300 DPI */
#define PCL_FM_RESOLUTION 20 /* Bitmap font, includes digitised resn */
#define PCL_FM_TT 15 /* TT scalable, bound or unbound */
#define PCL_FM_2B_TT 16 /* TT 2 Byte (format 16) */
/* bFontType values */
#define PCL_FT_7BIT 0 /* 7 bit: glyphs from 32 - 127 inc */
#define PCL_FT_8LIM 1 /* 8 bit, glyphs 32 - 127 & 160 - 255 */
#define PCL_FT_PC8 2 /* PC-8, glyphs 0 - 255, transparent too! */
/* sbStrokeW values */
#define PCL_LIGHT -3
#define PCL_BOLD 3
/*
* In addition, each glyph in the font contains a Character Descriptor. * So now define a structure for that too! */
typedef struct{ BYTE bFormat; /* Format identifier: 4 for PCL 4 */ BYTE bContinuation; /* Set if continuation of prior entry */ BYTE bDescSize; /* Size of this structure */ BYTE bClass; /* Format of data: 1 for PCL 4 */ BYTE bOrientation; /* Zero == portrait; 1 == landscape */ BYTE bRes0; short sLOff; /* Dots from ref. to left side of char */ short sTOff; /* Dots from ref. to top of char */ WORD wChWidth; /* Char width in dots */ WORD wChHeight; /* Char height in dots */ WORD wDeltaX; /* Quarter dot position increment after print */} CH_HEADER;
/*
* Character records can be continued due to the limit of 32767 bytes in * a PCL command sequence. Continuation records have the following * format. Really it is only the first two elements of the above * structure. */
typedef struct{ BYTE bFormat; /* Format identifier; 4 for PCL 4 */ BYTE bContinuation; /* TRUE if this is a continuation record */} CH_CONT_HDR;
/*
* Values for some of the fields in the above structs. */
/* bFormat */#define CH_FM_RASTER 4 /* Bitmap type */
#define CH_FM_SCALE 10 /* Intellifont scalable */
/* bClass */#define CH_CL_BITMAP 1 /* A bitmap font */
#define CH_CL_COMPBIT 2 /* Compressed bitmap */
#define CH_CL_CONTOUR 3 /* Intellifont scalable contour */
#define CH_CL_COMPCONT 4 /* Ditto, but compound contour */
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