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-rw-r--r--term.c35
-rw-r--r--term.h2
-rw-r--r--term_ascii.c63
-rw-r--r--term_ps.c71
4 files changed, 124 insertions, 47 deletions
diff --git a/term.c b/term.c
index d87f123b..3776f250 100644
--- a/term.c
+++ b/term.c
@@ -692,39 +692,6 @@ term_vspan(const struct termp *p, const struct roffsu *su)
size_t
term_hspan(const struct termp *p, const struct roffsu *su)
{
- double r;
-
- /* XXX: CM, IN, and PT are approximations. */
- switch (su->unit) {
- case (SCALE_CM):
- r = 4 * su->scale;
- break;
- case (SCALE_IN):
- /* XXX: this is an approximation. */
- r = 10 * su->scale;
- break;
- case (SCALE_PC):
- r = (10 * su->scale) / 6;
- break;
- case (SCALE_PT):
- r = (10 * su->scale) / 72;
- break;
- case (SCALE_MM):
- r = su->scale / 1000; /* FIXME: double-check. */
- break;
- case (SCALE_VS):
- r = su->scale * 2 - 1; /* FIXME: double-check. */
- break;
- default:
- r = su->scale;
- break;
- }
-
- if (r < 0.0)
- r = 0.0;
- return((size_t)/* LINTED */
- r);
+ return((*p->hspan)(p, su));
}
-
-
diff --git a/term.h b/term.h
index ff39cb7c..a884ccad 100644
--- a/term.h
+++ b/term.h
@@ -103,6 +103,8 @@ struct termp {
void (*endline)(struct termp *);
void (*advance)(struct termp *, size_t);
size_t (*width)(const struct termp *, char);
+ size_t (*hspan)(const struct termp *,
+ const struct roffsu *);
const void *argf; /* arg for headf/footf */
union {
struct termp_ps ps;
diff --git a/term_ascii.c b/term_ascii.c
index da85aae4..fa19eb1b 100644
--- a/term_ascii.c
+++ b/term_ascii.c
@@ -30,12 +30,14 @@
#include "term.h"
#include "main.h"
-static void ascii_endline(struct termp *);
-static void ascii_letter(struct termp *, char);
-static void ascii_begin(struct termp *);
+static size_t ascii_hspan(const struct termp *,
+ const struct roffsu *);
+static size_t ascii_width(const struct termp *, char);
static void ascii_advance(struct termp *, size_t);
+static void ascii_begin(struct termp *);
static void ascii_end(struct termp *);
-static size_t ascii_width(const struct termp *, char);
+static void ascii_endline(struct termp *);
+static void ascii_letter(struct termp *, char);
void *
@@ -51,12 +53,13 @@ ascii_alloc(char *outopts)
p->tabwidth = 5;
p->defrmargin = 78;
- p->type = TERMTYPE_CHAR;
- p->letter = ascii_letter;
+ p->advance = ascii_advance;
p->begin = ascii_begin;
p->end = ascii_end;
p->endline = ascii_endline;
- p->advance = ascii_advance;
+ p->hspan = ascii_hspan;
+ p->letter = ascii_letter;
+ p->type = TERMTYPE_CHAR;
p->width = ascii_width;
toks[0] = "width";
@@ -140,3 +143,49 @@ ascii_advance(struct termp *p, size_t len)
for (i = 0; i < len; i++)
putchar(' ');
}
+
+
+/* ARGSUSED */
+static size_t
+ascii_hspan(const struct termp *p, const struct roffsu *su)
+{
+ double r;
+
+ /*
+ * Approximate based on character width. These are generated
+ * entirely by eyeballing the screen, but appear to be correct.
+ */
+
+ switch (su->unit) {
+ case (SCALE_CM):
+ r = 4 * su->scale;
+ break;
+ case (SCALE_IN):
+ r = 10 * su->scale;
+ break;
+ case (SCALE_PC):
+ r = (10 * su->scale) / 6;
+ break;
+ case (SCALE_PT):
+ r = (10 * su->scale) / 72;
+ break;
+ case (SCALE_MM):
+ r = su->scale / 1000;
+ break;
+ case (SCALE_VS):
+ r = su->scale * 2 - 1;
+ break;
+ default:
+ r = su->scale;
+ break;
+ }
+
+ /* Explicitly disallow negative values. */
+
+ if (r < 0.0)
+ r = 0.0;
+
+ return((size_t)/* LINTED */
+ r);
+}
+
diff --git a/term_ps.c b/term_ps.c
index eeb7acc6..240275b7 100644
--- a/term_ps.c
+++ b/term_ps.c
@@ -359,13 +359,15 @@ static const struct font fonts[TERMFONT__MAX] = {
} while (/* CONSTCOND */ 0)
-static void ps_letter(struct termp *, char);
+static size_t ps_hspan(const struct termp *,
+ const struct roffsu *);
+static size_t ps_width(const struct termp *, char);
+static void ps_advance(struct termp *, size_t);
static void ps_begin(struct termp *);
static void ps_end(struct termp *);
-static void ps_advance(struct termp *, size_t);
static void ps_endline(struct termp *);
static void ps_fclose(struct termp *);
-static size_t ps_width(const struct termp *, char);
+static void ps_letter(struct termp *, char);
static void ps_pclose(struct termp *);
static void ps_pletter(struct termp *, int);
static void ps_printf(struct termp *, const char *, ...);
@@ -385,17 +387,20 @@ ps_alloc(char *outopts)
if (NULL == (p = term_alloc(TERMENC_ASCII)))
return(NULL);
- p->type = TERMTYPE_PS;
- p->letter = ps_letter;
+ p->advance = ps_advance;
p->begin = ps_begin;
p->end = ps_end;
- p->advance = ps_advance;
p->endline = ps_endline;
+ p->hspan = ps_hspan;
+ p->letter = ps_letter;
+ p->type = TERMTYPE_PS;
p->width = ps_width;
toks[0] = "paper";
toks[1] = NULL;
+ paper = "letter";
+
while (outopts && *outopts)
switch (getsubopt(&outopts, UNCONST(toks), &v)) {
case (0):
@@ -821,3 +826,57 @@ ps_width(const struct termp *p, char c)
c -= 32;
return(fonts[(int)TERMFONT_NONE].gly[(int)c].wx);
}
+
+
+static size_t
+ps_hspan(const struct termp *p, const struct roffsu *su)
+{
+ double r;
+
+ /*
+ * All of these measurements are derived by converting from the
+ * native measurement to AFM units, which are (scalesize/1000).
+ * Since scalesize is 10 for us, we can just skip to (x/100).
+ */
+
+ switch (su->unit) {
+ case (SCALE_CM):
+ r = su->scale * 28.34 * 100;
+ break;
+ case (SCALE_IN):
+ r = su->scale * 72 * 100;
+ break;
+ case (SCALE_PC):
+ r = su->scale * 12 * 100;
+ break;
+ case (SCALE_PT):
+ r = su->scale * 100;
+ break;
+ case (SCALE_EM):
+ r = su->scale *
+ fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
+ break;
+ case (SCALE_MM):
+ r = su->scale * 2.834 * 100;
+ break;
+ case (SCALE_EN):
+ r = su->scale *
+ fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
+ break;
+ case (SCALE_VS):
+ r = su->scale * p->engine.ps.lineheight;
+ break;
+ default:
+ r = su->scale;
+ break;
+ }
+
+ /* Explicitly disallow negative values. */
+
+ if (r < 0.0)
+ r = 0.0;
+
+ return((size_t)/* LINTED */
+ r);
+}
+
generated by cgit (git 2.34.1) at 2024-11-10 11:18:19 +0000