386BSD 0.0 development

[unix-history] / usr / src / usr.bin / groff / libXdvi / DviP.h

/*
* $XConsortium: DviP.h,v 1.5 89/07/22 19:44:08 keith Exp $
*/

/* 
* DviP.h - Private definitions for Dvi widget
*/

#ifndef _XtDviP_h
#define _XtDviP_h

#include "Dvi.h"
#include "DviChar.h"

/***********************************************************************
*
* Dvi Widget Private Data
*
***********************************************************************/

/************************************
*
*  Class structure
*
***********************************/

/*
* New fields for the Dvi widget class record
*/

typedef struct _DviClass {
       int             makes_compiler_happy;  /* not used */
} DviClassPart;

/*
* Full class record declaration
*/

typedef struct _DviClassRec {
       CoreClassPart   core_class;
       DviClassPart    command_class;
} DviClassRec;

extern DviClassRec dviClassRec;

/***************************************
*
*  Instance (widget) structure 
*
**************************************/

/*
* a list of fonts we've used for this widget
*/

typedef struct _dviFontSizeList {
       struct _dviFontSizeList *next;
       int                     size;
       char                    *x_name;
       XFontStruct             *font;
       int                     doesnt_exist;
} DviFontSizeList;

typedef struct _dviFontList {
       struct _dviFontList     *next;
       char                    *dvi_name;
       char                    *x_name;
       int                     dvi_number;
       DviFontSizeList         *sizes;
       DviCharNameMap          *char_map;
} DviFontList;

typedef struct _dviFontMap {
       struct _dviFontMap      *next;
       char                    *dvi_name;
       char                    *x_name;
} DviFontMap;

#define DVI_TEXT_CACHE_SIZE     256
#define DVI_CHAR_CACHE_SIZE     1024

typedef struct _dviCharCache {
       XTextItem       cache[DVI_TEXT_CACHE_SIZE];
       char            char_cache[DVI_CHAR_CACHE_SIZE];
       int             index;
       int             max;
       int             char_index;
       int             font_size;
       int             font_number;
       XFontStruct     *font;
       int             start_x, start_y;
       int             x, y;
} DviCharCache;

typedef struct _dviState {
       struct _dviState        *next;
       int                     font_size;
       int                     font_number;
       int                     x;
       int                     y;
} DviState;

typedef struct _dviFileMap {
       struct _dviFileMap      *next;
       long                    position;
       int                     page_number;
} DviFileMap;

/*
* New fields for the Dvi widget record
*/

typedef struct {
       /*
        * resource specifiable items
        */
       char            *font_map_string;
       unsigned long   foreground;
       unsigned long   background;
       int             requested_page;
       int             last_page;
       XFontStruct     *default_font;
       FILE            *file;
       Boolean         noPolyText;
       Boolean         seek;           /* file is "seekable" */
       /*
        * private state
        */
       FILE            *tmpFile;       /* used when reading stdin */
       char            readingTmp;     /* reading now from tmp */
       char            ungot;          /* have ungetc'd a char */
       GC              normal_GC;
       GC              fill_GC;
       DviFileMap      *file_map;
       DviFontList     *fonts;
       DviFontMap      *font_map;
       int             current_page;
       int             font_size;
       int             font_number;
       int             device_resolution;
       int             line_thickness;
       int             line_width;

#define DVI_FILL_MAX 1000

       int             fill;
#define DVI_FILL_WHITE 0
#define DVI_FILL_GRAY 1
#define DVI_FILL_BLACK 2
       int             fill_type;
       Pixmap          gray;
       int             backing_store;
       XFontStruct     *font;
       int             display_enable;
       struct ExposedExtents {
           int x1, y1, x2, y2;
       }               extents;
       DviState        *state;
       DviCharCache    cache;
} DviPart;

#define DviGetIn(dw,cp)\
   (dw->dvi.tmpFile ? (\
       DviGetAndPut (dw, cp) \
   ) :\
       (*cp = getc (dw->dvi.file))\
)

#define DviGetC(dw, cp)\
   (dw->dvi.readingTmp ? (\
       ((*cp = getc (dw->dvi.tmpFile)) == EOF) ? (\
           fseek (dw->dvi.tmpFile, 0l, 2),\
           (dw->dvi.readingTmp = 0),\
           DviGetIn (dw,cp)\
       ) : (\
           *cp\
       )\
   ) : (\
       DviGetIn(dw,cp)\
   )\
)

#define DviUngetC(dw, c)\
   (dw->dvi.readingTmp ? (\
       ungetc (c, dw->dvi.tmpFile)\
   ) : ( \
       (dw->dvi.ungot = 1),\
       ungetc (c, dw->dvi.file)))

/*
* Full widget declaration
*/

typedef struct _DviRec {
       CorePart        core;
       DviPart         dvi;
} DviRec;

extern XFontStruct      *QueryFont ();

extern DviCharNameMap   *QueryFontMap ();
#endif /* _XtDviP_h */