296 lines
9.3 KiB
C
296 lines
9.3 KiB
C
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/* $Xorg: fontstruct.h,v 1.3 2000/08/18 04:05:44 coskrey Exp $ */
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/***********************************************************
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* $XFree86: xc/include/fonts/fontstruct.h,v 3.3 1999/08/21 13:47:34 dawes Exp $ */
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#ifndef FONTSTR_H
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#define FONTSTR_H
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#include <X11/Xproto.h>
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#include "font.h"
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#include <X11/Xfuncproto.h>
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#include <X11/Xdefs.h>
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/*
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* This version of the server font data strucutre is only for describing
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* the in memory data structure. The file structure is not necessarily a
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* copy of this. That is up to the compiler and the OS layer font loading
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* machinery.
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*/
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#define GLYPHPADOPTIONS 4 /* 1, 2, 4, or 8 */
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typedef struct _FontProp {
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long name;
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long value; /* assumes ATOM is not larger than INT32 */
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} FontPropRec;
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typedef struct _FontResolution {
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unsigned short x_resolution;
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unsigned short y_resolution;
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unsigned short point_size;
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} FontResolutionRec;
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typedef struct _ExtentInfo {
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DrawDirection drawDirection;
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int fontAscent;
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int fontDescent;
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int overallAscent;
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int overallDescent;
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int overallWidth;
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int overallLeft;
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int overallRight;
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} ExtentInfoRec;
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typedef struct _CharInfo {
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xCharInfo metrics; /* info preformatted for Queries */
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char *bits; /* pointer to glyph image */
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} CharInfoRec;
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/*
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* Font is created at font load time. It is specific to a single encoding.
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* e.g. not all of the glyphs in a font may be part of a single encoding.
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*/
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typedef struct _FontInfo {
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unsigned short firstCol;
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unsigned short lastCol;
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unsigned short firstRow;
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unsigned short lastRow;
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unsigned short defaultCh;
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unsigned int noOverlap:1;
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unsigned int terminalFont:1;
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unsigned int constantMetrics:1;
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unsigned int constantWidth:1;
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unsigned int inkInside:1;
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unsigned int inkMetrics:1;
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unsigned int allExist:1;
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unsigned int drawDirection:2;
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unsigned int cachable:1;
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unsigned int anamorphic:1;
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short maxOverlap;
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short pad;
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xCharInfo maxbounds;
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xCharInfo minbounds;
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xCharInfo ink_maxbounds;
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xCharInfo ink_minbounds;
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short fontAscent;
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short fontDescent;
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int nprops;
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FontPropPtr props;
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char *isStringProp;
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} FontInfoRec;
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typedef struct _Font {
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int refcnt;
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FontInfoRec info;
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char bit;
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char byte;
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char glyph;
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char scan;
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fsBitmapFormat format;
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int (*get_glyphs) (FontPtr /* font */,
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unsigned long /* count */,
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unsigned char * /* chars */,
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FontEncoding /* encoding */,
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unsigned long * /* count */,
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CharInfoPtr * /* glyphs */);
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int (*get_metrics) (FontPtr /* font */,
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unsigned long /* count */,
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unsigned char * /* chars */,
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FontEncoding /* encoding */,
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unsigned long * /* count */,
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xCharInfo ** /* glyphs */);
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void (*unload_font) (FontPtr /* font */);
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void (*unload_glyphs) (FontPtr /* font */);
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FontPathElementPtr fpe;
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pointer svrPrivate;
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pointer fontPrivate;
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pointer fpePrivate;
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int maxPrivate;
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pointer *devPrivates;
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} FontRec;
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#define FontGetPrivate(pFont,n) ((n) > (pFont)->maxPrivate ? (pointer) 0 : \
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(pFont)->devPrivates[n])
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#define FontSetPrivate(pFont,n,ptr) ((n) > (pFont)->maxPrivate ? \
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_FontSetNewPrivate (pFont, n, ptr) : \
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((((pFont)->devPrivates[n] = (ptr)) != 0) || TRUE))
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typedef struct _FontNames {
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int nnames;
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int size;
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int *length;
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char **names;
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} FontNamesRec;
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/* External view of font paths */
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typedef struct _FontPathElement {
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int name_length;
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char *name;
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int type;
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int refcount;
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pointer private;
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} FontPathElementRec;
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typedef Bool (*NameCheckFunc) (char *name);
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typedef int (*InitFpeFunc) (FontPathElementPtr fpe);
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typedef int (*FreeFpeFunc) (FontPathElementPtr fpe);
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typedef int (*ResetFpeFunc) (FontPathElementPtr fpe);
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typedef int (*OpenFontFunc) ( pointer client,
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FontPathElementPtr fpe,
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Mask flags,
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char* name,
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int namelen,
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fsBitmapFormat format,
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fsBitmapFormatMask fmask,
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XID id,
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FontPtr* pFont,
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char** aliasName,
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FontPtr non_cachable_font);
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typedef void (*CloseFontFunc) (FontPathElementPtr fpe, FontPtr pFont);
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typedef int (*ListFontsFunc) (pointer client,
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FontPathElementPtr fpe,
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char* pat,
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int len,
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int max,
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FontNamesPtr names);
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typedef int (*StartLfwiFunc) (pointer client,
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FontPathElementPtr fpe,
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char* pat,
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int len,
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int max,
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pointer* privatep);
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typedef int (*NextLfwiFunc) (pointer client,
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FontPathElementPtr fpe,
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char** name,
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int* namelen,
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FontInfoPtr* info,
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int* numFonts,
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pointer private);
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typedef int (*WakeupFpeFunc) (FontPathElementPtr fpe,
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unsigned long* LastSelectMask);
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typedef void (*ClientDiedFunc) (pointer client,
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FontPathElementPtr fpe);
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typedef int (*LoadGlyphsFunc) (pointer client,
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FontPtr pfont,
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Bool range_flag,
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unsigned int nchars,
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int item_size,
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unsigned char* data);
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typedef int (*StartLaFunc) (pointer client,
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FontPathElementPtr fpe,
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char* pat,
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int len,
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int max,
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pointer* privatep);
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typedef int (*NextLaFunc) (pointer client,
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FontPathElementPtr fpe,
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char** namep,
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int* namelenp,
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char** resolvedp,
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int* resolvedlenp,
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pointer private);
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typedef void (*SetPathFunc)(void);
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typedef struct _FPEFunctions {
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NameCheckFunc name_check;
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InitFpeFunc init_fpe;
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ResetFpeFunc reset_fpe;
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FreeFpeFunc free_fpe;
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OpenFontFunc open_font;
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CloseFontFunc close_font;
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ListFontsFunc list_fonts;
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StartLaFunc start_list_fonts_and_aliases;
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NextLaFunc list_next_font_or_alias;
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StartLfwiFunc start_list_fonts_with_info;
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NextLfwiFunc list_next_font_with_info;
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WakeupFpeFunc wakeup_fpe;
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ClientDiedFunc client_died;
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/* for load_glyphs, range_flag = 0 ->
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nchars = # of characters in data
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item_size = bytes/char
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data = list of characters
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range_flag = 1 ->
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nchars = # of fsChar2b's in data
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item_size is ignored
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data = list of fsChar2b's */
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LoadGlyphsFunc load_glyphs;
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SetPathFunc set_path_hook;
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} FPEFunctionsRec, FPEFunctions;
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/*
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* Various macros for computing values based on contents of
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* the above structures
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*/
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#define GLYPHWIDTHPIXELS(pci) \
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((pci)->metrics.rightSideBearing - (pci)->metrics.leftSideBearing)
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#define GLYPHHEIGHTPIXELS(pci) \
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((pci)->metrics.ascent + (pci)->metrics.descent)
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#define GLYPHWIDTHBYTES(pci) (((GLYPHWIDTHPIXELS(pci))+7) >> 3)
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#define GLYPHWIDTHPADDED(bc) (((bc)+7) & ~0x7)
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#define BYTES_PER_ROW(bits, nbytes) \
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((nbytes) == 1 ? (((bits)+7)>>3) /* pad to 1 byte */ \
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:(nbytes) == 2 ? ((((bits)+15)>>3)&~1) /* pad to 2 bytes */ \
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:(nbytes) == 4 ? ((((bits)+31)>>3)&~3) /* pad to 4 bytes */ \
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:(nbytes) == 8 ? ((((bits)+63)>>3)&~7) /* pad to 8 bytes */ \
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: 0)
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#define BYTES_FOR_GLYPH(ci,pad) (GLYPHHEIGHTPIXELS(ci) * \
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BYTES_PER_ROW(GLYPHWIDTHPIXELS(ci),pad))
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/*
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* Macros for computing different bounding boxes for fonts; from
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* the font protocol
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*/
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#define FONT_MAX_ASCENT(pi) ((pi)->fontAscent > (pi)->ink_maxbounds.ascent ? \
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(pi)->fontAscent : (pi)->ink_maxbounds.ascent)
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#define FONT_MAX_DESCENT(pi) ((pi)->fontDescent > (pi)->ink_maxbounds.descent ? \
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(pi)->fontDescent : (pi)->ink_maxbounds.descent)
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#define FONT_MAX_HEIGHT(pi) (FONT_MAX_ASCENT(pi) + FONT_MAX_DESCENT(pi))
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#define FONT_MIN_LEFT(pi) ((pi)->ink_minbounds.leftSideBearing < 0 ? \
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(pi)->ink_minbounds.leftSideBearing : 0)
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#define FONT_MAX_RIGHT(pi) ((pi)->ink_maxbounds.rightSideBearing > \
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(pi)->ink_maxbounds.characterWidth ? \
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(pi)->ink_maxbounds.rightSideBearing : \
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(pi)->ink_maxbounds.characterWidth)
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#define FONT_MAX_WIDTH(pi) (FONT_MAX_RIGHT(pi) - FONT_MIN_LEFT(pi))
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#include "fontproto.h"
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#endif /* FONTSTR_H */
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