/* $Xorg: snfstr.h,v 1.4 2001/02/09 02:04:02 xorgcvs Exp $ */ /*********************************************************** Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. 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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ /* $XFree86: xc/lib/font/bitmap/snfstr.h,v 1.5 2001/12/14 19:56:47 dawes Exp $ */ #ifndef SNFSTR_H #define SNFSTR_H 1 #include <X11/fonts/fntfilio.h> /*- * This file describes the Server Natural Font format. * SNF fonts are both CPU-dependent and frame buffer bit order dependent. * This file is used by: * 1) the server, to hold font information read out of font files. * 2) font converters * * Each font file contains the following * data structures, with no padding in-between. * * 1) The XFONTINFO structure * hand-padded to a two-short boundary. * maxbounds.byteoffset is the total number of bytes in the * glpyh array * maxbounds.bitOffset is thetotal width of the unpadded font * * 2) The XCHARINFO array * indexed directly with character codes, both on disk * and in memory. * * 3) Character glyphs * padded in the server-natural way, and * ordered in the device-natural way. * End of glyphs padded to 32-bit boundary. * * 4) nProps font properties * * 5) a sequence of null-terminated strings, for font properties */ #define FONT_FILE_VERSION 4 typedef struct _snfFontProp { CARD32 name; /* offset of string */ INT32 value; /* number or offset of string */ Bool indirect; /* value is a string offset */ } snfFontPropRec; /* * the following macro definitions describe a font file image in memory */ #define ADDRCharInfoRec( pfi) \ ((snfCharInfoRec *) &(pfi)[1]) #define ADDRCHARGLYPHS( pfi) \ (((char *) &(pfi)[1]) + BYTESOFCHARINFO(pfi)) /* * pad out glyphs to a CARD32 boundary */ #define ADDRXFONTPROPS( pfi) \ ((snfFontPropRec *) ((char *)ADDRCHARGLYPHS( pfi) + BYTESOFGLYPHINFO(pfi))) #define ADDRSTRINGTAB( pfi) \ ((char *)ADDRXFONTPROPS( pfi) + BYTESOFPROPINFO(pfi)) #define n2dChars(pfi) (((pfi)->lastRow - (pfi)->firstRow + 1) * \ ((pfi)->lastCol - (pfi)->firstCol + 1)) #define BYTESOFFONTINFO(pfi) (sizeof(snfFontInfoRec)) #define BYTESOFCHARINFO(pfi) (sizeof(snfCharInfoRec) * n2dChars(pfi)) #define BYTESOFPROPINFO(pfi) (sizeof(snfFontPropRec) * (pfi)->nProps) #define BYTESOFSTRINGINFO(pfi) ((pfi)->lenStrings) #define BYTESOFGLYPHINFO(pfi) (((pfi)->maxbounds.byteOffset+3) & ~0x3) #define BYTESOFINKINFO(pfi) (sizeof(snfCharInfoRec) * n2dChars(pfi)) typedef struct _snfFontProp *snfFontPropPtr; typedef struct _snfCharInfo *snfCharInfoPtr; typedef struct _snfFontInfo *snfFontInfoPtr; typedef struct _snfCharInfo { xCharInfo metrics; /* info preformatted for Queries */ unsigned byteOffset:24; /* byte offset of the raster from pGlyphs */ unsigned exists:1; /* true iff glyph exists for this char */ unsigned pad:7; /* must be zero for now */ } snfCharInfoRec; typedef struct _snfFontInfo { unsigned int version1; /* version stamp */ unsigned int allExist; unsigned int drawDirection; unsigned int noOverlap; /* true if: * max(rightSideBearing-characterWidth) <= * minbounds->metrics.leftSideBearing */ unsigned int constantMetrics; unsigned int terminalFont; /* Should be deprecated! true if: constant * metrics && leftSideBearing == 0 && * rightSideBearing == characterWidth && * ascent == fontAscent && descent == * fontDescent */ unsigned int linear:1; /* true if firstRow == lastRow */ unsigned int constantWidth:1; /* true if * minbounds->metrics.characterWidth * == * maxbounds->metrics.characterWidth */ unsigned int inkInside:1; /* true if for all defined glyphs: * leftSideBearing >= 0 && rightSideBearing <= * characterWidth && -fontDescent <= ascent <= * fontAscent && -fontAscent <= descent <= * fontDescent */ unsigned int inkMetrics:1; /* ink metrics != bitmap metrics */ /* used with terminalFont */ /* see font's pInk{CI,Min,Max} */ unsigned int padding:28; unsigned int firstCol; unsigned int lastCol; unsigned int firstRow; unsigned int lastRow; unsigned int nProps; unsigned int lenStrings; /* length in bytes of string table */ unsigned int chDefault; /* default character */ int fontDescent; /* minimum for quality typography */ int fontAscent; /* minimum for quality typography */ snfCharInfoRec minbounds; /* MIN of glyph metrics over all chars */ snfCharInfoRec maxbounds; /* MAX of glyph metrics over all chars */ unsigned int pixDepth; /* intensity bits per pixel */ unsigned int glyphSets; /* number of sets of glyphs, for sub-pixel * positioning */ unsigned int version2; /* version stamp double-check */ } snfFontInfoRec; extern void SnfSetFormat ( int bit, int byte, int glyph, int scan ); extern int snfReadFont ( FontPtr pFont, FontFilePtr file, int bit, int byte, int glyph, int scan ); extern int snfReadFontInfo ( FontInfoPtr pFontInfo, FontFilePtr file ); #endif /* SNFSTR_H */