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Editing: fontstruct.h
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/*********************************************************** 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. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ #ifndef FONTSTR_H #define FONTSTR_H #include <X11/Xproto.h> #include "font.h" #include <X11/Xfuncproto.h> #include <X11/Xdefs.h> /* * This version of the server font data structure is only for describing * the in memory data structure. The file structure is not necessarily a * copy of this. That is up to the compiler and the OS layer font loading * machinery. */ #define GLYPHPADOPTIONS 4 /* 1, 2, 4, or 8 */ typedef struct _FontProp { long name; long value; /* assumes ATOM is not larger than INT32 */ } FontPropRec; typedef struct _FontResolution { unsigned short x_resolution; unsigned short y_resolution; unsigned short point_size; } FontResolutionRec; typedef struct _ExtentInfo { DrawDirection drawDirection; int fontAscent; int fontDescent; int overallAscent; int overallDescent; int overallWidth; int overallLeft; int overallRight; } ExtentInfoRec; typedef struct _CharInfo { xCharInfo metrics; /* info preformatted for Queries */ char *bits; /* pointer to glyph image */ } CharInfoRec; /* * Font is created at font load time. It is specific to a single encoding. * e.g. not all of the glyphs in a font may be part of a single encoding. */ typedef struct _FontInfo { unsigned short firstCol; unsigned short lastCol; unsigned short firstRow; unsigned short lastRow; unsigned short defaultCh; unsigned int noOverlap:1; unsigned int terminalFont:1; unsigned int constantMetrics:1; unsigned int constantWidth:1; unsigned int inkInside:1; unsigned int inkMetrics:1; unsigned int allExist:1; unsigned int drawDirection:2; unsigned int cachable:1; unsigned int anamorphic:1; short maxOverlap; short pad; xCharInfo maxbounds; xCharInfo minbounds; xCharInfo ink_maxbounds; xCharInfo ink_minbounds; short fontAscent; short fontDescent; int nprops; FontPropPtr props; char *isStringProp; } FontInfoRec; typedef struct _Font { int refcnt; FontInfoRec info; char bit; char byte; char glyph; char scan; fsBitmapFormat format; int (*get_glyphs) (FontPtr /* font */, unsigned long /* count */, unsigned char * /* chars */, FontEncoding /* encoding */, unsigned long * /* count */, CharInfoPtr * /* glyphs */); int (*get_metrics) (FontPtr /* font */, unsigned long /* count */, unsigned char * /* chars */, FontEncoding /* encoding */, unsigned long * /* count */, xCharInfo ** /* glyphs */); void (*unload_font) (FontPtr /* font */); void (*unload_glyphs) (FontPtr /* font */); FontPathElementPtr fpe; void *svrPrivate; void *fontPrivate; void *fpePrivate; int maxPrivate; void **devPrivates; } FontRec; #define FontGetPrivate(pFont,n) ((n) > (pFont)->maxPrivate ? (void *) 0 : \ (pFont)->devPrivates[n]) #define FontSetPrivate(pFont,n,ptr) ((n) > (pFont)->maxPrivate ? \ _FontSetNewPrivate (pFont, n, ptr) : \ ((((pFont)->devPrivates[n] = (ptr)) != 0) || TRUE)) typedef struct _FontNames { int nnames; int size; int *length; char **names; } FontNamesRec; /* External view of font paths */ typedef struct _FontPathElement { int name_length; #if FONT_PATH_ELEMENT_NAME_CONST const #endif char *name; int type; int refcount; void *private; } FontPathElementRec; typedef Bool (*NameCheckFunc) (const char *name); typedef int (*InitFpeFunc) (FontPathElementPtr fpe); typedef int (*FreeFpeFunc) (FontPathElementPtr fpe); typedef int (*ResetFpeFunc) (FontPathElementPtr fpe); typedef int (*OpenFontFunc) ( void *client, FontPathElementPtr fpe, Mask flags, const char* name, int namelen, fsBitmapFormat format, fsBitmapFormatMask fmask, XID id, FontPtr* pFont, char** aliasName, FontPtr non_cachable_font); typedef void (*CloseFontFunc) (FontPathElementPtr fpe, FontPtr pFont); typedef int (*ListFontsFunc) (void *client, FontPathElementPtr fpe, const char* pat, int len, int max, FontNamesPtr names); typedef int (*StartLfwiFunc) (void *client, FontPathElementPtr fpe, const char* pat, int len, int max, void ** privatep); typedef int (*NextLfwiFunc) (void *client, FontPathElementPtr fpe, char** name, int* namelen, FontInfoPtr* info, int* numFonts, void *private); typedef int (*WakeupFpeFunc) (FontPathElementPtr fpe, unsigned long* LastSelectMask); typedef void (*ClientDiedFunc) (void *client, FontPathElementPtr fpe); typedef int (*LoadGlyphsFunc) (void *client, FontPtr pfont, Bool range_flag, unsigned int nchars, int item_size, unsigned char* data); typedef int (*StartLaFunc) (void *client, FontPathElementPtr fpe, const char* pat, int len, int max, void ** privatep); typedef int (*NextLaFunc) (void *client, FontPathElementPtr fpe, char** namep, int* namelenp, char** resolvedp, int* resolvedlenp, void *private); typedef void (*SetPathFunc)(void); typedef struct _FPEFunctions { NameCheckFunc name_check; InitFpeFunc init_fpe; ResetFpeFunc reset_fpe; FreeFpeFunc free_fpe; OpenFontFunc open_font; CloseFontFunc close_font; ListFontsFunc list_fonts; StartLaFunc start_list_fonts_and_aliases; NextLaFunc list_next_font_or_alias; StartLfwiFunc start_list_fonts_with_info; NextLfwiFunc list_next_font_with_info; WakeupFpeFunc wakeup_fpe; ClientDiedFunc client_died; /* for load_glyphs, range_flag = 0 -> nchars = # of characters in data item_size = bytes/char data = list of characters range_flag = 1 -> nchars = # of fsChar2b's in data item_size is ignored data = list of fsChar2b's */ LoadGlyphsFunc load_glyphs; SetPathFunc set_path_hook; } FPEFunctionsRec, FPEFunctions; /* * Various macros for computing values based on contents of * the above structures */ #define GLYPHWIDTHPIXELS(pci) \ ((pci)->metrics.rightSideBearing - (pci)->metrics.leftSideBearing) #define GLYPHHEIGHTPIXELS(pci) \ ((pci)->metrics.ascent + (pci)->metrics.descent) #define GLYPHWIDTHBYTES(pci) (((GLYPHWIDTHPIXELS(pci))+7) >> 3) #define GLYPHWIDTHPADDED(bc) (((bc)+7) & ~0x7) #define BYTES_PER_ROW(bits, nbytes) \ ((nbytes) == 1 ? (((bits)+7)>>3) /* pad to 1 byte */ \ :(nbytes) == 2 ? ((((bits)+15)>>3)&~1) /* pad to 2 bytes */ \ :(nbytes) == 4 ? ((((bits)+31)>>3)&~3) /* pad to 4 bytes */ \ :(nbytes) == 8 ? ((((bits)+63)>>3)&~7) /* pad to 8 bytes */ \ : 0) #define BYTES_FOR_GLYPH(ci,pad) (GLYPHHEIGHTPIXELS(ci) * \ BYTES_PER_ROW(GLYPHWIDTHPIXELS(ci),pad)) /* * Macros for computing different bounding boxes for fonts; from * the font protocol */ #define FONT_MAX_ASCENT(pi) ((pi)->fontAscent > (pi)->ink_maxbounds.ascent ? \ (pi)->fontAscent : (pi)->ink_maxbounds.ascent) #define FONT_MAX_DESCENT(pi) ((pi)->fontDescent > (pi)->ink_maxbounds.descent ? \ (pi)->fontDescent : (pi)->ink_maxbounds.descent) #define FONT_MAX_HEIGHT(pi) (FONT_MAX_ASCENT(pi) + FONT_MAX_DESCENT(pi)) #define FONT_MIN_LEFT(pi) ((pi)->ink_minbounds.leftSideBearing < 0 ? \ (pi)->ink_minbounds.leftSideBearing : 0) #define FONT_MAX_RIGHT(pi) ((pi)->ink_maxbounds.rightSideBearing > \ (pi)->ink_maxbounds.characterWidth ? \ (pi)->ink_maxbounds.rightSideBearing : \ (pi)->ink_maxbounds.characterWidth) #define FONT_MAX_WIDTH(pi) (FONT_MAX_RIGHT(pi) - FONT_MIN_LEFT(pi)) #include "fontproto.h" #endif /* FONTSTR_H */
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