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Diffstat (limited to 'dviware/umddvi/h/gfclass.h')
-rw-r--r-- | dviware/umddvi/h/gfclass.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/dviware/umddvi/h/gfclass.h b/dviware/umddvi/h/gfclass.h new file mode 100644 index 0000000000..cd392ac2bb --- /dev/null +++ b/dviware/umddvi/h/gfclass.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 1987 University of Maryland Department of Computer Science. + * All rights reserved. Permission to copy for any purpose is hereby granted + * so long as this copyright notice remains intact. + */ + +/* + * GF classification codes + */ + +/* + * Predicate for simple paint commands. This is presumably the most + * common GF operation; it may be profitable to check for this before + * switching out on the command type. + */ +#define GF_IsPaint(c) ((c) < 64) + +/* + * Symbolic names for command `types', as returned by the macro + * GT_TYPE(int c). + */ +#define GT_PAINT0 0 /* paint without parameter */ +#define GT_PAINT 1 /* paint with parameter */ +#define GT_BOC 2 /* long BOC */ +#define GT_BOC1 3 /* short BOC */ +#define GT_EOC 4 /* EOC */ +#define GT_SKIP0 5 /* parameterless SKIP */ +#define GT_SKIP 6 /* parmeterised SKIP */ +#define GT_NEW_ROW 7 /* NEW_ROW_n */ +#define GT_XXX 8 /* XXXn */ +#define GT_YYY 9 /* YYY */ +#define GT_NOP 10 /* no op */ +#define GT_CHAR_LOC 11 /* CHAR_LOC */ +#define GT_CHAR_LOC0 12 /* abbreviated CHAR_LOC */ +#define GT_PRE 13 +#define GT_POST 14 +#define GT_POSTPOST 15 +#define GT_UNDEF 16 + +/* + * Symbolic names for parameter lengths, obtained via the macro + * GT_OpLen(int c). + */ +#define GPL_NONE 0 /* no parameter, or too complex */ +#define GPL_UNS1 1 /* one one-byte parameter in 0..255 */ +#define GPL_UNS2 2 /* one two-byte parameter in 0..65535 */ +#define GPL_UNS3 3 /* one three-byte parameter in 0..16777215 */ +#define GPL_SGN4 4 /* one four-byte signed parameter */ +/* + * there are no unsigned four byte parameters, and no shorter signed + * parameters + */ + +#define GF_OpLen(code) (gf_oplen[code]) +#define GF_TYPE(code) (gf_gt[code]) +extern char gf_oplen[]; +extern char gf_gt[]; |