diff options
author | Kenichi Handa <[email protected]> | 1999-12-27 05:03:46 +0000 |
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committer | Kenichi Handa <[email protected]> | 1999-12-27 05:03:46 +0000 |
commit | 3b0fee460ebf3ea8515d143ce4bc49ef78e58a77 (patch) | |
tree | 98505d7f79e8ecfaa67f5d34327c089591c6f3ee /src | |
parent | 89ba5b5f009618ae2a7d5feca6f661fa45780e60 (diff) |
(GLYPH): Defined as `int', not `unsigned int'. Now the
lowest 8 bits are single byte character code, the bits above are
face ID.
(GLYPH_MASK_FACE) (GLYPH_MASK_CHAR): Adjusted for the change
above.
(FAST_MAKE_GLYPH) (FSST_GLYPH_FACE): Likewise.
(GLYPH_MASK_REV_DIR) (GLYPH_MASK_PADDING): Macros deleted.
Diffstat (limited to 'src')
-rw-r--r-- | src/lisp.h | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/src/lisp.h b/src/lisp.h index f4ee67f953..8fe1f1a5f6 100644 --- a/src/lisp.h +++ b/src/lisp.h @@ -1122,36 +1122,33 @@ typedef unsigned char UCHAR; /* The glyph datatype, used to represent characters on the display. */ -/* The low 19 bits (CHARACTERBITS) are the character code, and the - bits above them except for the topmost two bits are the numeric - face ID. If FID is the face ID of a glyph on a frame F, then - F->display.x->faces[FID] contains the description of that face. - This is an int instead of a short, so we can support a good bunch - of face ID's (i.e. 2^(32 - 19 - 2) = 2048 ID's) ; given that we +/* Glyph code to use as an index to the glyph table. If it is out of + range for the glyph table, or the corresonding element in the table + is nil, the low 8 bits are the single byte character code, and the + bits above are the numeric face ID. If FID is the face ID of a + glyph on a frame F, then F->display.x->faces[FID] contains the + description of that face. This is an int instead of a short, so we + can support a good bunch of face ID's (2^(31 - 8)); given that we have no mechanism for tossing unused frame face ID's yet, we'll - probably run out of 255 pretty quickly. */ -#define GLYPH unsigned int - -/* Mask bit for a glyph of a character which should be written from - right to left. */ -#define GLYPH_MASK_REV_DIR 0x80000000 -/* Mask bit for a padding glyph of a multi-column character. */ -#define GLYPH_MASK_PADDING 0x40000000 + probably run out of 255 pretty quickly. + This is always -1 for a multibyte character. */ +#define GLYPH int + /* Mask bits for face. */ -#define GLYPH_MASK_FACE 0x3FF80000 -/* Mask bits for character code. */ -#define GLYPH_MASK_CHAR 0x0007FFFF /* The lowest 19 bits */ +#define GLYPH_MASK_FACE 0x7FFFFF00 + /* Mask bits for character code. */ +#define GLYPH_MASK_CHAR 0x000000FF /* The lowest 8 bits */ /* The FAST macros assume that we already know we're in an X window. */ -/* Given a character code and a face ID, return the appropriate glyph. */ -#define FAST_MAKE_GLYPH(char, face) ((char) | ((face) << CHARACTERBITS)) +/* Set a character code and a face ID in a glyph G. */ +#define FAST_MAKE_GLYPH(char, face) ((char) | ((face) << 8)) /* Return a glyph's character code. */ #define FAST_GLYPH_CHAR(glyph) ((glyph) & GLYPH_MASK_CHAR) /* Return a glyph's face ID. */ -#define FAST_GLYPH_FACE(glyph) (((glyph) & GLYPH_MASK_FACE) >> CHARACTERBITS) +#define FAST_GLYPH_FACE(glyph) (((glyph) & GLYPH_MASK_FACE) >> 8) /* Slower versions that test the frame type first. */ #define MAKE_GLYPH(f, char, face) (FAST_MAKE_GLYPH (char, face)) |