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129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/* Definitions and header for handling BDF fonts on the Microsoft W32 API.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Based heavily on code by H. Miyashita for Meadow (a descendant of
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MULE for W32). */
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#ifndef EMACS_W32BDF_H
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#define EMACS_W32BDF_H
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#define BDF_FIRST_OFFSET_TABLE 0x200
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#define BDF_SECOND_OFFSET_TABLE 0x80
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#define BDF_SECOND_OFFSET(x) ((x) & 0x7f)
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#define BDF_FIRST_OFFSET(x) (((x) >> 8) | (((x) & 0x80) << 1))
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#define BDF_CODEPOINT_MAX (BDF_FIRST_OFFSET_TABLE * BDF_SECOND_OFFSET_TABLE)
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#define BDF_CODEPOINT_RANGE_COVER_P(x) (((x) >= 0) && ((x) <= BDF_CODEPOINT_MAX))
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#define BDF_FONT_CACHE_SIZE 3000
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#define BDF_FONT_CLEAR_SIZE 600
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/*
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GLYPH METRIC (# ... character's reference point)
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^
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y | (urx, ury)
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| ^ +----------------+
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a | b| |character | <- font bounding Box
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x | b| | |
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i | h| | #(bbox, bboy) |
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s | v +----------------+
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| (llx, lly)
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| <---------------->
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| bbw
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+----------------------->
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origin x axis
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*/
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/* Structure of glyph information of one character. */
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typedef struct
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{
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int dwidth; /* width in pixels */
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int bbw, bbh, bbox, bboy; /* bounding box in pixels */
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} glyph_metric;
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typedef struct
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{
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glyph_metric metric;
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int row_byte_size; /* size in bytes occupied by one row of the bitmap */
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int bitmap_size; /* size in bytes of the following slots */
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unsigned char *bitmap; /* */
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} glyph_struct;
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typedef struct fchar *pfont_char;
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typedef struct
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{
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glyph_metric metric;
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pfont_char psrc;
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int row_byte_size;
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int bitmap_size;
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unsigned char *pbmp;
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} cache_bitmap;
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typedef struct fchar
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{
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unsigned char *offset;
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cache_bitmap *pcbmp;
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} font_char;
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typedef struct
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{
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char *filename;
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HANDLE hfile;
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HANDLE hfilemap;
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unsigned char *font;
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unsigned char *seeked;
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DWORD size;
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font_char *chtbl[BDF_FIRST_OFFSET_TABLE];
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int llx, lly, urx, ury; /* Font bounding box */
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int yoffset;
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int relative_compose;
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int default_ascent;
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unsigned char *registry;
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unsigned char *encoding;
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unsigned char *slant;
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/* unsigned char *width; */
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int width;
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int height;
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int pixsz;
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int nchars;
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} bdffont;
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#define BDF_FILE_SIZE_MAX 256*1024*1024 /* 256Mb */
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#define BDF_FONT_FILE(font) (((bdffont*)(font))->filename)
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#define MAKELENDSHORT(c1, c2) (unsigned short)((c1) | ((c2) << 8))
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bdffont *w32_init_bdf_font (char *filename);
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void w32_free_bdf_font (bdffont *fontp);
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int w32_get_bdf_glyph (bdffont *fontp, int index, int size,
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glyph_struct *glyph);
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int w32_BDF_TextOut (bdffont *fontp, HDC hdc, int left,
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int top, unsigned char *text, int dim,
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int bytelen, int fixed_pitch_size);
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int w32_BDF_to_x_font (char *file, char* xstr, int len);
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#endif /* EMACS_W32BDF_H */
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/* arch-tag: 7499e9f2-197e-44cc-9274-373f00b51eec
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(do not change this comment) */
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