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Annotation of researchv9/X11/src/X.V11R1/server/include/fontstruct.h, revision 1.1

1.1     ! root        1: /***********************************************************
        !             2: Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
        !             3: and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
        !             4: 
        !             5:                         All Rights Reserved
        !             6: 
        !             7: Permission to use, copy, modify, and distribute this software and its 
        !             8: documentation for any purpose and without fee is hereby granted, 
        !             9: provided that the above copyright notice appear in all copies and that
        !            10: both that copyright notice and this permission notice appear in 
        !            11: supporting documentation, and that the names of Digital or MIT not be
        !            12: used in advertising or publicity pertaining to distribution of the
        !            13: software without specific, written prior permission.  
        !            14: 
        !            15: DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            16: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            17: DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            18: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            19: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            20: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            21: SOFTWARE.
        !            22: 
        !            23: ******************************************************************/
        !            24: #ifndef FONTSTRUCT_H
        !            25: #define FONTSTRUCT_H 1
        !            26: #include "font.h"
        !            27: #include "misc.h"
        !            28: 
        !            29: /*
        !            30:  * This file describes the Server Natural Font format.
        !            31:  * SNF fonts are both CPU-dependent and frame buffer bit order dependent.
        !            32:  * This file is used by:
        !            33:  *     1)  the server, to hold font information read out of font files.
        !            34:  *     2)  font converters
        !            35:  *
        !            36:  * Each font file contains the following
        !            37:  * data structures, with no padding in-between.
        !            38:  *
        !            39:  *     1)  The XFONTINFO structure
        !            40:  *             hand-padded to a two-short boundary.
        !            41:  *
        !            42:  *     2)  The XCHARINFO array
        !            43:  *             indexed directly with character codes, both on disk
        !            44:  *             and in memory.
        !            45:  *
        !            46:  *     3)  Character glyphs
        !            47:  *             padded in the server-natural way, and
        !            48:  *             ordered in the device-natural way.
        !            49:  *             End of glyphs padded to 32-bit boundary.
        !            50:  *
        !            51:  *     4)  nProps font properties
        !            52:  *
        !            53:  *     5)  a sequence of null-terminated strings, for font properties
        !            54:  */
        !            55: 
        !            56: 
        !            57: typedef struct _FontProp { 
        !            58:        CARD32  name;           /* offset of string */
        !            59:        INT32   value;          /* number or offset of string */
        !            60:        Bool    indirect;       /* value is a string offset */
        !            61: } FontPropRec;
        !            62: 
        !            63: typedef struct _CharInfo {
        !            64:     xCharInfo  metrics;        /* info preformatted for Queries */
        !            65:     unsigned   byteOffset:24;  /* byte offset of the raster from pGlyphs */
        !            66:     Bool       exists:1;       /* true iff glyph exists for this char */
        !            67:     unsigned   pad:7;          /* must be zero for now */
        !            68: } CharInfoRec;
        !            69: 
        !            70: /*
        !            71:  * maxbounds.byteOffset is the total number of bytes in the glyph array,
        !            72:  * and maxbounds.bitOffset is total width of the unpadded font.
        !            73:  */
        !            74: typedef struct _FontInfo {
        !            75:     unsigned int       version1;   /* version stamp */
        !            76:     unsigned int       allExist;
        !            77:     unsigned int       drawDirection;
        !            78:     unsigned int       noOverlap;
        !            79:     unsigned int       constantMetrics;
        !            80:     unsigned int       terminalFont;   /* constant metrics &&
        !            81:                                           width of glyph == width of char &&
        !            82:                                           height of glyph == height of font
        !            83:                                        */
        !            84:     unsigned int       linear:1;       /* true if nRows == 0 */
        !            85:     unsigned int       padding:31;
        !            86:     unsigned int       firstCol;
        !            87:     unsigned int       lastCol;
        !            88:     unsigned int       firstRow;
        !            89:     unsigned int       lastRow;
        !            90:     unsigned int       nProps;
        !            91:     unsigned int       lenStrings; /* length in bytes of string table */
        !            92:     unsigned int       chDefault;  /* default character */ 
        !            93:     unsigned int       fontDescent; /* minimum for quality typography */
        !            94:     unsigned int       fontAscent;  /* minimum for quality typography */
        !            95:     CharInfoRec                minbounds;  /* MIN of glyph metrics over all chars */
        !            96:     CharInfoRec                maxbounds;  /* MAX of glyph metrics over all chars */
        !            97:     unsigned int       pixDepth;   /* intensity bits per pixel */
        !            98:     unsigned int       glyphSets;  /* number of sets of glyphs, for
        !            99: ONT                                        sub-pixel positioning */
        !           100:     unsigned int       version2;   /* version stamp double-check */
        !           101: } FontInfoRec;
        !           102: 
        !           103: typedef struct _ExtentInfo {
        !           104:     DrawDirection      drawDirection;
        !           105:     int                        fontAscent;
        !           106:     int                        fontDescent;
        !           107:     int                        overallAscent;
        !           108:     int                        overallDescent;
        !           109:     int                        overallWidth;
        !           110:     int                        overallLeft;
        !           111:     int                        overallRight;
        !           112: } ExtentInfoRec;
        !           113: 
        !           114: #endif /* FONTSTRUCT_H */
        !           115: 

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