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214 lines
8.8 KiB
214 lines
8.8 KiB
/***************************** MODULE HEADER ********************************
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* sf_pcl.h
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* Structures etc used to define PCL Softfont file format.
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*
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* Copyright (C) 1992 Microsoft Corporation.
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*
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*****************************************************************************/
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#ifndef SOFTFONT_H_
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#define SOFTFONT_H_
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/*
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* A structure corresponding to the layout of Font Descriptor for a PCL
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* soft font file. The Font Descriptor is at the beginning of the file,
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* and contains overall font info.
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*
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* Note that there are several different versions of this structure;
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* the first is the original (pre LJ4) format, while the second is
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* the LJ4 introduced variety that allows specifying the resolution
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* at which the font was digitised. This is used for downloading TT
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* fonts etc. which are generated at the graphics resolution.
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*
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* NOTE: The data layout is designed for the 68000 family - which is
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* big endian. So, an amount of shuffling is required for little
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* endian machines like the x86.
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*/
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typedef signed char SBYTE;
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#define SFH_NM_SZ 16 /* Bytes allowed in name field */
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typedef struct
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{
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WORD wSize; /* Number of bytes in here */
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BYTE bFormat; /* Format: original, TT, intellifont, etc */
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BYTE bFontType; /* 7, 8 or PC-8 style font */
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WORD wRes1; /* Reserved */
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WORD wBaseline; /* Baseline to cell top, PCL dots */
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WORD wCellWide; /* Cell width in dots */
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WORD wCellHeight; /* Cell height in dots */
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BYTE bOrientation; /* Orientation: 0 portrait, 1 Landscape */
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BYTE bSpacing; /* 0 fixed pitch, 1 proportional */
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WORD wSymSet; /* Symbol set, using HP encoding */
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WORD wPitch; /* Pitch in quarter dot units == HMI */
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WORD wHeight; /* Design height in quarter dot units */
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WORD wXHeight; /* Design height, quarter dots, of x */
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SBYTE sbWidthType; /* Relative width of glyphs */
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BYTE bStyle; /* 0 for regular, 1 for italic */
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SBYTE sbStrokeW; /* Stroke weight; -7 (thin) to +7 (thick) */
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BYTE bTypeface; /* Typeface ID - predefined types */
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BYTE bRes2;
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BYTE bSerifStyle; /* Serif style; predefined values */
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WORD wRes3;
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SBYTE sbUDist; /* Underline distance from baseline */
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BYTE bUHeight; /* Underline height */
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WORD wTextHeight; /* Quarter dot interline spacing */
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WORD wTextWidth; /* Quarter dot glyph increment */
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WORD wRes4;
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WORD wRes5;
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BYTE bPitchExt; /* Additional pitch resolution */
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BYTE bHeightExt; /* Ditto, for height */
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WORD wRes6;
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WORD wRes7;
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WORD wRes8;
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char chName[ SFH_NM_SZ ]; /* May not be null terminated! */
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} SF_HEADER;
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typedef struct
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{
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WORD wSize; /* Number of bytes in here */
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BYTE bFormat; /* Format: original, TT, intellifont, etc */
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BYTE bFontType; /* 7, 8 or PC-8 style font */
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WORD wRes1; /* Reserved */
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WORD wBaseline; /* Baseline to cell top, PCL dots */
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WORD wCellWide; /* Cell width in dots */
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WORD wCellHeight; /* Cell height in dots */
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BYTE bOrientation; /* Orientation: 0 portrait, 1 Landscape */
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BYTE bSpacing; /* 0 fixed pitch, 1 proportional */
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WORD wSymSet; /* Symbol set, using HP encoding */
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WORD wPitch; /* Pitch in quarter dot units == HMI */
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WORD wHeight; /* Design height in quarter dot units */
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WORD wXHeight; /* Design height, quarter dots, of x */
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SBYTE sbWidthType; /* Relative width of glyphs */
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BYTE bStyle; /* 0 for regular, 1 for italic */
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SBYTE sbStrokeW; /* Stroke weight; -7 (thin) to +7 (thick) */
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BYTE bTypeface; /* Typeface ID - predefined types */
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BYTE bRes2;
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BYTE bSerifStyle; /* Serif style; predefined values */
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WORD wRes3;
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SBYTE sbUDist; /* Underline distance from baseline */
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BYTE bUHeight; /* Underline height */
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WORD wTextHeight; /* Quarter dot interline spacing */
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WORD wTextWidth; /* Quarter dot glyph increment */
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WORD wRes4;
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WORD wRes5;
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BYTE bPitchExt; /* Additional pitch resolution */
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BYTE bHeightExt; /* Ditto, for height */
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WORD wRes6;
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WORD wRes7;
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WORD wRes8;
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char chName[ SFH_NM_SZ ]; /* May not be null terminated! */
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WORD wXResn; /* X resolution of font design */
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WORD wYResn; /* Y design resolution */
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} SF_HEADER20;
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/*
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* Typical values used above to identify different types of fonts.
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*/
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#define PCL_FM_ORIGINAL 0 /* Bitmap font, digitised at 300 DPI */
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#define PCL_FM_RESOLUTION 20 /* Bitmap font, includes digitised resn */
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#define PCL_FM_TT 15 /* TT scalable, bound or unbound */
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/* bFontType values */
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#define PCL_FT_7BIT 0 /* 7 bit: glyphs from 32 - 127 inc */
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#define PCL_FT_8LIM 1 /* 8 bit, glyphs 32 - 127 & 160 - 255 */
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#define PCL_FT_PC8 2 /* PC-8, glyphs 0 - 255, transparent too! */
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/* sbStrokeW values */
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#define PCL_LIGHT -3
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#define PCL_BOLD 3
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/*
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* In addition, each glyph in the font contains a Character Descriptor.
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* So now define a structure for that too!
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*/
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typedef struct
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{
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BYTE bFormat; /* Format identifier: 4 for PCL 4 */
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BYTE bContinuation; /* Set if continuation of prior entry */
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BYTE bDescSize; /* Size of this structure */
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BYTE bClass; /* Format of data: 1 for PCL 4 */
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BYTE bOrientation; /* Zero == portrait; 1 == landscape */
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BYTE bRes0;
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short sLOff; /* Dots from ref. to left side of char */
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short sTOff; /* Dots from ref. to top of char */
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WORD wChWidth; /* Char width in dots */
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WORD wChHeight; /* Char height in dots */
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WORD wDeltaX; /* Quarter dot position increment after print */
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} CH_HEADER;
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/*
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* Character records can be continued due to the limit of 32767 bytes in
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* a PCL command sequence. Continuation records have the following
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* format. Really it is only the first two elements of the above
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* structure.
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*/
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typedef struct
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{
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BYTE bFormat; /* Format identifier; 4 for PCL 4 */
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BYTE bContinuation; /* TRUE if this is a continuation record */
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} CH_CONT_HDR;
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/*
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* Values for some of the fields in the above structs.
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*/
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/* bFormat */
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#define CH_FM_RASTER 4 /* Bitmap type */
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#define CH_FM_SCALE 10 /* Intellifont scalable */
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/* bClass */
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#define CH_CL_BITMAP 1 /* A bitmap font */
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#define CH_CL_COMPBIT 2 /* Compressed bitmap */
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#define CH_CL_CONTOUR 3 /* Intellifont scalable contour */
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#define CH_CL_COMPCONT 4 /* Ditto, but compound contour */
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#define EXP_SIZE 2
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#define FDH_VER 0x100 /* 1.00 in BCD */
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/*
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* Flags bits.
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*/
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#define FDH_SOFT 0x0001 /* Softfont, thus needs downloading */
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#define FDH_CART 0x0002 /* This is a cartridge font */
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#define FDH_CART_MAIN 0x0004 /* Main (first) entry for this cartridge */
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/*
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* Selection criteria bits: dwSelBits. These bits are used as
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* follows. During font installation, the installer set the following
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* values as appropriate. During initialisation, the driver sets
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* up a mask of these bits, depending upon the printer's abilities.
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* For example, the FDH_SCALABLE bit is set only if the printer can
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* handle scalable fonts. When the fonts are examined to see if
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* they are usable, the following test is applied:
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*
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* (font.dwSelBits & printer.dwSelBits) == font.dwSelBits
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*
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* If true, the font is usable.
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*/
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#define FDH_LANDSCAPE 0x00000001 /* Font is landscape orientation */
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#define FDH_PORTRAIT 0x00000002 /* Font is portrait */
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#define FDH_OR_REVERSE 0x00000004 /* 180 degree rotation of above */
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#define FDH_BITMAP 0x00000008 /* Bitmap font */
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#define FDH_COMPRESSED 0x00000010 /* Data is compressed bitmap */
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#define FDH_SCALABLE 0x00000020 /* Font is scalable */
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#define FDH_CONTOUR 0x00000040 /* Intellifont contour */
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#define FDH_ERROR 0x80000000 /* Set if some error condition */
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#endif // #ifndef SOFTFONT_H_
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