Implement font-switching for PostScript. -Tps now supports

[mandoc.git] / term.h

diff --git a/term.h b/term.h
index 4a1ed9022e4eb9a056f976d0809c9c262906e45a..825ad281b1315324921e34911401aaca5e9b32ac 100644 (file)
--- a/term.h
+++ b/term.h
@@ -1,4 +1,4 @@
-/*     $Id: term.h,v 1.52 2010/03/23 12:42:22 kristaps Exp $ */
+/*     $Id: term.h,v 1.63 2010/06/11 16:58:20 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -19,24 +19,54 @@
 
 __BEGIN_DECLS
 
+struct termp;
+
 enum   termenc {
        TERMENC_ASCII
 };
 
+enum   termtype {
+       TERMTYPE_CHAR,
+       TERMTYPE_PS
+};
+
 enum   termfont {
        TERMFONT_NONE = 0,
        TERMFONT_BOLD,
        TERMFONT_UNDER
 };
 
+#define        TERM_MAXMARGIN    100000 /* FIXME */
+
+typedef void   (*term_margin)(struct termp *, const void *);
+
+struct termp_ps {
+       int               psstate;      /* state of ps output */
+#define        PS_INLINE        (1 << 0)       /* we're in a word */
+#define        PS_MARGINS       (1 << 1)       /* we're in the margins */
+       size_t            pscol;        /* visible column */
+       size_t            psrow;        /* visible row */
+       char             *psmarg;       /* margin buf */
+       size_t            psmargsz;     /* margin buf size */
+       size_t            psmargcur;    /* current pos in margin buf */
+       size_t            pspage;       /* current page */
+       char              last;         /* character buffer */
+       enum termfont     lastf;        /* last set font */
+};
+
 struct termp {
+       enum termtype     type;
+       size_t            defrmargin;   /* Right margin of the device.. */
        size_t            rmargin;      /* Current right margin. */
        size_t            maxrmargin;   /* Max right margin. */
        size_t            maxcols;      /* Max size of buf. */
        size_t            offset;       /* Margin offest. */
+       size_t            tabwidth;     /* Distance of tab positions. */
        size_t            col;          /* Bytes in buf. */
+       size_t            viscol;       /* Chars on current line. */
        int               overstep;     /* See termp_flushln(). */
        int               flags;
+#define        TERMP_SENTENCE   (1 << 1)       /* Space before a sentence. */
 #define        TERMP_NOSPACE    (1 << 2)       /* No space before words. */
 #define        TERMP_NOLPAD     (1 << 3)       /* See term_flushln(). */
 #define        TERMP_NOBREAK    (1 << 4)       /* See term_flushln(). */
@@ -54,12 +84,28 @@ struct      termp {
        enum termfont     fontl;        /* Last font set. */
        enum termfont     fontq[10];    /* Symmetric fonts. */
        int               fonti;        /* Index of font stack. */
+       term_margin       headf;        /* invoked to print head */
+       term_margin       footf;        /* invoked to print foot */
+       void            (*letter)(struct termp *, char);
+       void            (*begin)(struct termp *);
+       void            (*end)(struct termp *);
+       void            (*endline)(struct termp *);
+       void            (*advance)(struct termp *, size_t);
+       const void       *argf;         /* arg for headf/footf */
+       union {
+               struct termp_ps ps;
+       } engine;
 };
 
+struct termp    *term_alloc(enum termenc);
+void             term_free(struct termp *);
 void             term_newln(struct termp *);
 void             term_vspace(struct termp *);
 void             term_word(struct termp *, const char *);
 void             term_flushln(struct termp *);
+void             term_begin(struct termp *, term_margin, 
+                       term_margin, const void *);
+void             term_end(struct termp *);
 
 size_t           term_hspan(const struct roffsu *);
 size_t           term_vspan(const struct roffsu *);