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Diffstat (limited to 'tk8.6/generic/tkFont.h')
| -rw-r--r-- | tk8.6/generic/tkFont.h | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/tk8.6/generic/tkFont.h b/tk8.6/generic/tkFont.h deleted file mode 100644 index de479bf..0000000 --- a/tk8.6/generic/tkFont.h +++ /dev/null @@ -1,224 +0,0 @@ -/* - * tkFont.h -- - * - * Declarations for interfaces between the generic and platform-specific - * parts of the font package. This information is not visible outside of - * the font package. - * - * Copyright (c) 1996-1997 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. - */ - -#ifndef _TKFONT -#define _TKFONT - -/* - * The following structure keeps track of the attributes of a font. It can be - * used to keep track of either the desired attributes or the actual - * attributes gotten when the font was instantiated. - */ - -struct TkFontAttributes { - Tk_Uid family; /* Font family, or NULL to represent plaform- - * specific default system font. */ - double size; /* Pointsize of font, 0.0 for default size, or - * negative number meaning pixel size. */ - int weight; /* Weight flag; see below for def'n. */ - int slant; /* Slant flag; see below for def'n. */ - int underline; /* Non-zero for underline font. */ - int overstrike; /* Non-zero for overstrike font. */ -}; - -/* - * Possible values for the "weight" field in a TkFontAttributes structure. - * Weight is a subjective term and depends on what the company that created - * the font considers bold. - */ - -#define TK_FW_NORMAL 0 -#define TK_FW_BOLD 1 - -#define TK_FW_UNKNOWN -1 /* Unknown weight. This value is used for - * error checking and is never actually stored - * in the weight field. */ - -/* - * Possible values for the "slant" field in a TkFontAttributes structure. - */ - -#define TK_FS_ROMAN 0 -#define TK_FS_ITALIC 1 -#define TK_FS_OBLIQUE 2 /* This value is only used when parsing X font - * names to determine the closest match. It is - * only stored in the XLFDAttributes - * structure, never in the slant field of the - * TkFontAttributes. */ - -#define TK_FS_UNKNOWN -1 /* Unknown slant. This value is used for error - * checking and is never actually stored in - * the slant field. */ - -/* - * The following structure keeps track of the metrics for an instantiated - * font. The metrics are the physical properties of the font itself. - */ - -typedef struct TkFontMetrics { - int ascent; /* From baseline to top of font. */ - int descent; /* From baseline to bottom of font. */ - int maxWidth; /* Width of widest character in font. */ - int fixed; /* Non-zero if this is a fixed-width font, - * 0 otherwise. */ -} TkFontMetrics; - -/* - * The following structure is used to keep track of the generic information - * about a font. Each platform-specific font is represented by a structure - * with the following structure at its beginning, plus any platform-specific - * stuff after that. - */ - -typedef struct TkFont { - /* - * Fields used and maintained exclusively by generic code. - */ - - int resourceRefCount; /* Number of active uses of this font (each - * active use corresponds to a call to - * Tk_AllocFontFromTable or Tk_GetFont). If - * this count is 0, then this TkFont structure - * is no longer valid and it isn't present in - * a hash table: it is being kept around only - * because there are objects referring to it. - * The structure is freed when - * resourceRefCount and objRefCount are both - * 0. */ - int objRefCount; /* The number of Tcl objects that reference - * this structure. */ - Tcl_HashEntry *cacheHashPtr;/* Entry in font cache for this structure, - * used when deleting it. */ - Tcl_HashEntry *namedHashPtr;/* Pointer to hash table entry that - * corresponds to the named font that the - * tkfont was based on, or NULL if the tkfont - * was not based on a named font. */ - Screen *screen; /* The screen where this font is valid. */ - int tabWidth; /* Width of tabs in this font (pixels). */ - int underlinePos; /* Offset from baseline to origin of underline - * bar (used for drawing underlines on a - * non-underlined font). */ - int underlineHeight; /* Height of underline bar (used for drawing - * underlines on a non-underlined font). */ - - /* - * Fields used in the generic code that are filled in by - * platform-specific code. - */ - - Font fid; /* For backwards compatibility with XGCValues - * structures. Remove when TkGCValues is - * implemented. */ - TkFontAttributes fa; /* Actual font attributes obtained when the - * the font was created, as opposed to the - * desired attributes passed in to - * TkpGetFontFromAttributes(). The desired - * metrics can be determined from the string - * that was used to create this font. */ - TkFontMetrics fm; /* Font metrics determined when font was - * created. */ - struct TkFont *nextPtr; /* Points to the next TkFont structure with - * the same name. All fonts with the same name - * (but different displays) are chained - * together off a single entry in a hash - * table. */ -} TkFont; - -/* - * The following structure is used to return attributes when parsing an XLFD. - * The extra information is of interest to the Unix-specific code when - * attempting to find the closest matching font. - */ - -typedef struct TkXLFDAttributes { - Tk_Uid foundry; /* The foundry of the font. */ - int slant; /* The tristate value for the slant, which is - * significant under X. */ - int setwidth; /* The proportionate width, see below for - * definition. */ - Tk_Uid charset; /* The actual charset string. */ -} TkXLFDAttributes; - -/* - * Possible values for the "setwidth" field in a TkXLFDAttributes structure. - * The setwidth is whether characters are considered wider or narrower than - * normal. - */ - -#define TK_SW_NORMAL 0 -#define TK_SW_CONDENSE 1 -#define TK_SW_EXPAND 2 -#define TK_SW_UNKNOWN 3 /* Unknown setwidth. This value may be stored - * in the setwidth field. */ - -/* - * The following defines specify the meaning of the fields in a fully - * qualified XLFD. - */ - -#define XLFD_FOUNDRY 0 -#define XLFD_FAMILY 1 -#define XLFD_WEIGHT 2 -#define XLFD_SLANT 3 -#define XLFD_SETWIDTH 4 -#define XLFD_ADD_STYLE 5 -#define XLFD_PIXEL_SIZE 6 -#define XLFD_POINT_SIZE 7 -#define XLFD_RESOLUTION_X 8 -#define XLFD_RESOLUTION_Y 9 -#define XLFD_SPACING 10 -#define XLFD_AVERAGE_WIDTH 11 -#define XLFD_CHARSET 12 -#define XLFD_NUMFIELDS 13 /* Number of fields in XLFD. */ - -/* - * Helper macro. How to correctly round a double to a short. - */ - -#define ROUND16(x) ((short) floor((x) + 0.5)) - -/* - * Low-level API exported by generic code to platform-specific code. - */ - -#define TkInitFontAttributes(fa) memset((fa), 0, sizeof(TkFontAttributes)); -#define TkInitXLFDAttributes(xa) memset((xa), 0, sizeof(TkXLFDAttributes)); - -MODULE_SCOPE int TkFontParseXLFD(const char *string, - TkFontAttributes *faPtr, TkXLFDAttributes *xaPtr); -MODULE_SCOPE const char *const * TkFontGetAliasList(const char *faceName); -MODULE_SCOPE const char *const *const * TkFontGetFallbacks(void); -MODULE_SCOPE double TkFontGetPixels(Tk_Window tkwin, double size); -MODULE_SCOPE double TkFontGetPoints(Tk_Window tkwin, double size); -MODULE_SCOPE const char *const * TkFontGetGlobalClass(void); -MODULE_SCOPE const char *const * TkFontGetSymbolClass(void); -MODULE_SCOPE int TkCreateNamedFont(Tcl_Interp *interp, Tk_Window tkwin, - const char *name, TkFontAttributes *faPtr); -MODULE_SCOPE int TkDeleteNamedFont(Tcl_Interp *interp, - Tk_Window tkwin, const char *name); -MODULE_SCOPE int TkFontGetFirstTextLayout(Tk_TextLayout layout, - Tk_Font *font, char *dst); - -/* - * Low-level API exported by platform-specific code to generic code. - */ - -MODULE_SCOPE void TkpDeleteFont(TkFont *tkFontPtr); -MODULE_SCOPE void TkpFontPkgInit(TkMainInfo *mainPtr); -MODULE_SCOPE TkFont * TkpGetFontFromAttributes(TkFont *tkFontPtr, - Tk_Window tkwin, const TkFontAttributes *faPtr); -MODULE_SCOPE void TkpGetFontFamilies(Tcl_Interp *interp, - Tk_Window tkwin); -MODULE_SCOPE TkFont * TkpGetNativeFont(Tk_Window tkwin, const char *name); - -#endif /* _TKFONT */ |