1 /* $Id: term_ps.c,v 1.91 2017/11/10 23:42:52 schwarze Exp $ */
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2017 Marc Espie <espie@openbsd.org>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/types.h>
34 #include "mandoc_aux.h"
40 /* These work the buffer used by the header and footer. */
41 #define PS_BUFSLOP 128
43 /* Convert PostScript point "x" to an AFM unit. */
44 #define PNT2AFM(p, x) \
45 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale))
47 /* Convert an AFM unit "x" to a PostScript points */
48 #define AFM2PNT(p, x) \
49 ((double)(x) / (1000.0 / (double)(p)->ps->scale))
52 unsigned short wx; /* WX in AFM */
56 const char *name; /* FontName in AFM */
57 #define MAXCHAR 95 /* total characters we can handle */
58 struct glyph gly[MAXCHAR]; /* glyph metrics */
63 #define PS_INLINE (1 << 0) /* we're in a word */
64 #define PS_MARGINS (1 << 1) /* we're in the margins */
65 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */
66 #define PS_BACKSP (1 << 3) /* last character was backspace */
67 size_t pscol; /* visible column (AFM units) */
68 size_t pscolnext; /* used for overstrike */
69 size_t psrow; /* visible row (AFM units) */
70 size_t lastrow; /* psrow of the previous word */
71 char *psmarg; /* margin buf */
72 size_t psmargsz; /* margin buf size */
73 size_t psmargcur; /* cur index in margin buf */
74 char last; /* last non-backspace seen */
75 enum termfont lastf; /* last set font */
76 enum termfont nextf; /* building next font here */
77 size_t scale; /* font scaling factor */
78 size_t pages; /* number of pages shown */
79 size_t lineheight; /* line height (AFM units) */
80 size_t top; /* body top (AFM units) */
81 size_t bottom; /* body bottom (AFM units) */
82 const char *medianame; /* for DocumentMedia and PageSize */
83 size_t height; /* page height (AFM units */
84 size_t width; /* page width (AFM units) */
85 size_t lastwidth; /* page width before last ll */
86 size_t left; /* body left (AFM units) */
87 size_t header; /* header pos (AFM units) */
88 size_t footer; /* footer pos (AFM units) */
89 size_t pdfbytes; /* current output byte */
90 size_t pdflastpg; /* byte of last page mark */
91 size_t pdfbody; /* start of body object */
92 size_t *pdfobjs; /* table of object offsets */
93 size_t pdfobjsz; /* size of pdfobjs */
96 static int ps_hspan(const struct termp *,
97 const struct roffsu *);
98 static size_t ps_width(const struct termp *, int);
99 static void ps_advance(struct termp *, size_t);
100 static void ps_begin(struct termp *);
101 static void ps_closepage(struct termp *);
102 static void ps_end(struct termp *);
103 static void ps_endline(struct termp *);
104 static void ps_growbuf(struct termp *, size_t);
105 static void ps_letter(struct termp *, int);
106 static void ps_pclose(struct termp *);
107 static void ps_plast(struct termp *);
108 static void ps_pletter(struct termp *, int);
109 static void ps_printf(struct termp *, const char *, ...)
110 __attribute__((__format__ (__printf__, 2, 3)));
111 static void ps_putchar(struct termp *, char);
112 static void ps_setfont(struct termp *, enum termfont);
113 static void ps_setwidth(struct termp *, int, int);
114 static struct termp *pspdf_alloc(const struct manoutput *, enum termtype);
115 static void pdf_obj(struct termp *, size_t);
118 * We define, for the time being, three fonts: bold, oblique/italic, and
119 * normal (roman). The following table hard-codes the font metrics for
120 * ASCII, i.e., 32--127.
123 static const struct font fonts[TERMFONT__MAX] = {
415 { "Times-BoldItalic", {
515 pdf_alloc(const struct manoutput *outopts)
517 return pspdf_alloc(outopts, TERMTYPE_PDF);
521 ps_alloc(const struct manoutput *outopts)
523 return pspdf_alloc(outopts, TERMTYPE_PS);
526 static struct termp *
527 pspdf_alloc(const struct manoutput *outopts, enum termtype type)
530 unsigned int pagex, pagey;
531 size_t marginx, marginy, lineheight;
534 p = mandoc_calloc(1, sizeof(*p));
535 p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
539 p->enc = TERMENC_ASCII;
540 p->fontq = mandoc_reallocarray(NULL,
541 (p->fontsz = 8), sizeof(*p->fontq));
542 p->fontq[0] = p->fontl = TERMFONT_NONE;
543 p->ps = mandoc_calloc(1, sizeof(*p->ps));
545 p->advance = ps_advance;
548 p->endline = ps_endline;
550 p->letter = ps_letter;
551 p->setwidth = ps_setwidth;
554 /* Default to US letter (millimetres). */
556 p->ps->medianame = "Letter";
561 * The ISO-269 paper sizes can be calculated automatically, but
562 * it would require bringing in -lm for pow() and I'd rather not
563 * do that. So just do it the easy way for now. Since this
564 * only happens once, I'm not terribly concerned.
568 if (pp != NULL && strcasecmp(pp, "letter") != 0) {
569 if (strcasecmp(pp, "a3") == 0) {
570 p->ps->medianame = "A3";
573 } else if (strcasecmp(pp, "a4") == 0) {
574 p->ps->medianame = "A4";
577 } else if (strcasecmp(pp, "a5") == 0) {
578 p->ps->medianame = "A5";
581 } else if (strcasecmp(pp, "legal") == 0) {
582 p->ps->medianame = "Legal";
585 } else if (sscanf(pp, "%ux%u", &pagex, &pagey) == 2)
586 p->ps->medianame = "CustomSize";
588 warnx("%s: Unknown paper", pp);
592 * This MUST be defined before any PNT2AFM or AFM2PNT
593 * calculations occur.
598 /* Remember millimetres -> AFM units. */
600 pagex = PNT2AFM(p, ((double)pagex * 72.0 / 25.4));
601 pagey = PNT2AFM(p, ((double)pagey * 72.0 / 25.4));
603 /* Margins are 1/9 the page x and y. */
605 marginx = (size_t)((double)pagex / 9.0);
606 marginy = (size_t)((double)pagey / 9.0);
608 /* Line-height is 1.4em. */
610 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
612 p->ps->width = p->ps->lastwidth = (size_t)pagex;
613 p->ps->height = (size_t)pagey;
614 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
615 p->ps->top = pagey - marginy;
616 p->ps->footer = (marginy / 2) - (lineheight / 2);
617 p->ps->bottom = marginy;
618 p->ps->left = marginx;
619 p->ps->lineheight = lineheight;
621 p->defrmargin = pagex - (marginx * 2);
626 ps_setwidth(struct termp *p, int iop, int width)
630 lastwidth = p->ps->width;
632 p->ps->width += width;
634 p->ps->width = width ? (size_t)width : p->ps->lastwidth;
635 else if (p->ps->width > (size_t)width)
636 p->ps->width -= width;
639 p->ps->lastwidth = lastwidth;
643 pspdf_free(void *arg)
647 p = (struct termp *)arg;
650 free(p->ps->pdfobjs);
657 ps_printf(struct termp *p, const char *fmt, ...)
665 * If we're running in regular mode, then pipe directly into
666 * vprintf(). If we're processing margins, then push the data
667 * into our growable margin buffer.
670 if ( ! (PS_MARGINS & p->ps->flags)) {
671 len = vprintf(fmt, ap);
673 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len;
678 * XXX: I assume that the in-margin print won't exceed
679 * PS_BUFSLOP (128 bytes), which is reasonable but still an
680 * assumption that will cause pukeage if it's not the case.
683 ps_growbuf(p, PS_BUFSLOP);
685 pos = (int)p->ps->psmargcur;
686 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap);
690 p->ps->psmargcur = strlen(p->ps->psmarg);
694 ps_putchar(struct termp *p, char c)
698 /* See ps_printf(). */
700 if ( ! (PS_MARGINS & p->ps->flags)) {
708 pos = (int)p->ps->psmargcur++;
709 p->ps->psmarg[pos++] = c;
710 p->ps->psmarg[pos] = '\0';
714 pdf_obj(struct termp *p, size_t obj)
719 if ((obj - 1) >= p->ps->pdfobjsz) {
720 p->ps->pdfobjsz = obj + 128;
721 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs,
722 p->ps->pdfobjsz, sizeof(size_t));
725 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
726 ps_printf(p, "%zu 0 obj\n", obj);
730 ps_closepage(struct termp *p)
736 * Close out a page that we've already flushed to output. In
737 * PostScript, we simply note that the page must be shown. In
738 * PDF, we must now create the Length, Resource, and Page node
739 * for the page contents.
742 assert(p->ps->psmarg && p->ps->psmarg[0]);
743 ps_printf(p, "%s", p->ps->psmarg);
745 if (TERMTYPE_PS != p->type) {
746 len = p->ps->pdfbytes - p->ps->pdflastpg;
747 base = p->ps->pages * 4 + p->ps->pdfbody;
749 ps_printf(p, "endstream\nendobj\n");
751 /* Length of content. */
752 pdf_obj(p, base + 1);
753 ps_printf(p, "%zu\nendobj\n", len);
755 /* Resource for content. */
756 pdf_obj(p, base + 2);
757 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
758 ps_printf(p, "/Font <<\n");
759 for (i = 0; i < (int)TERMFONT__MAX; i++)
760 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
761 ps_printf(p, ">>\n>>\nendobj\n");
764 pdf_obj(p, base + 3);
765 ps_printf(p, "<<\n");
766 ps_printf(p, "/Type /Page\n");
767 ps_printf(p, "/Parent 2 0 R\n");
768 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
769 ps_printf(p, "/Contents %zu 0 R\n", base);
770 ps_printf(p, ">>\nendobj\n");
772 ps_printf(p, "showpage\n");
775 p->ps->psrow = p->ps->top;
776 assert( ! (PS_NEWPAGE & p->ps->flags));
777 p->ps->flags |= PS_NEWPAGE;
781 ps_end(struct termp *p)
783 size_t i, xref, base;
789 * At the end of the file, do one last showpage. This is the
790 * same behaviour as groff(1) and works for multiple pages as
794 if ( ! (PS_NEWPAGE & p->ps->flags)) {
795 assert(0 == p->ps->flags);
796 assert('\0' == p->ps->last);
800 if (TERMTYPE_PS == p->type) {
801 ps_printf(p, "%%%%Trailer\n");
802 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages);
803 ps_printf(p, "%%%%EOF\n");
808 ps_printf(p, "<<\n/Type /Pages\n");
809 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
810 (size_t)AFM2PNT(p, p->ps->width),
811 (size_t)AFM2PNT(p, p->ps->height));
813 ps_printf(p, "/Count %zu\n", p->ps->pages);
814 ps_printf(p, "/Kids [");
816 for (i = 0; i < p->ps->pages; i++)
817 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3);
819 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4;
821 ps_printf(p, "]\n>>\nendobj\n");
823 ps_printf(p, "<<\n");
824 ps_printf(p, "/Type /Catalog\n");
825 ps_printf(p, "/Pages 2 0 R\n");
826 ps_printf(p, ">>\nendobj\n");
827 xref = p->ps->pdfbytes;
828 ps_printf(p, "xref\n");
829 ps_printf(p, "0 %zu\n", base + 1);
830 ps_printf(p, "0000000000 65535 f \n");
832 for (i = 0; i < base; i++)
833 ps_printf(p, "%.10zu 00000 n \n",
834 p->ps->pdfobjs[(int)i]);
836 ps_printf(p, "trailer\n");
837 ps_printf(p, "<<\n");
838 ps_printf(p, "/Size %zu\n", base + 1);
839 ps_printf(p, "/Root %zu 0 R\n", base);
840 ps_printf(p, "/Info 1 0 R\n");
841 ps_printf(p, ">>\n");
842 ps_printf(p, "startxref\n");
843 ps_printf(p, "%zu\n", xref);
844 ps_printf(p, "%%%%EOF\n");
848 ps_begin(struct termp *p)
850 size_t width, height;
854 * Print margins into margin buffer. Nothing gets output to the
855 * screen yet, so we don't need to initialise the primary state.
859 assert(p->ps->psmargsz);
860 p->ps->psmarg[0] = '\0';
863 /*p->ps->pdfbytes = 0;*/
864 p->ps->psmargcur = 0;
865 p->ps->flags = PS_MARGINS;
866 p->ps->pscol = p->ps->left;
867 p->ps->psrow = p->ps->header;
868 p->ps->lastrow = 0; /* impossible row */
870 ps_setfont(p, TERMFONT_NONE);
872 (*p->headf)(p, p->argf);
875 p->ps->pscol = p->ps->left;
876 p->ps->psrow = p->ps->footer;
878 (*p->footf)(p, p->argf);
881 p->ps->flags &= ~PS_MARGINS;
883 assert(0 == p->ps->flags);
884 assert(p->ps->psmarg);
885 assert('\0' != p->ps->psmarg[0]);
888 * Print header and initialise page state. Following this,
889 * stuff gets printed to the screen, so make sure we're sane.
892 if (TERMTYPE_PS == p->type) {
893 width = AFM2PNT(p, p->ps->width);
894 height = AFM2PNT(p, p->ps->height);
896 ps_printf(p, "%%!PS-Adobe-3.0\n");
897 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
898 ps_printf(p, "%%%%Orientation: Portrait\n");
899 ps_printf(p, "%%%%Pages: (atend)\n");
900 ps_printf(p, "%%%%PageOrder: Ascend\n");
901 ps_printf(p, "%%%%DocumentMedia: man-%s %zu %zu 0 () ()\n",
902 p->ps->medianame, width, height);
903 ps_printf(p, "%%%%DocumentNeededResources: font");
905 for (i = 0; i < (int)TERMFONT__MAX; i++)
906 ps_printf(p, " %s", fonts[i].name);
908 ps_printf(p, "\n%%%%DocumentSuppliedResources: "
909 "procset MandocProcs 1.0 0\n");
910 ps_printf(p, "%%%%EndComments\n");
911 ps_printf(p, "%%%%BeginProlog\n");
912 ps_printf(p, "%%%%BeginResource: procset MandocProcs "
914 /* The font size is effectively hard-coded for now. */
915 ps_printf(p, "/fs %zu def\n", p->ps->scale);
916 for (i = 0; i < (int)TERMFONT__MAX; i++)
917 ps_printf(p, "/f%d { /%s fs selectfont } def\n",
919 ps_printf(p, "/s { 3 1 roll moveto show } bind def\n");
920 ps_printf(p, "/c { exch currentpoint exch pop "
921 "moveto show } bind def\n");
922 ps_printf(p, "%%%%EndResource\n");
923 ps_printf(p, "%%%%EndProlog\n");
924 ps_printf(p, "%%%%BeginSetup\n");
925 ps_printf(p, "%%%%BeginFeature: *PageSize %s\n",
927 ps_printf(p, "<</PageSize [%zu %zu]>>setpagedevice\n",
929 ps_printf(p, "%%%%EndFeature\n");
930 ps_printf(p, "%%%%EndSetup\n");
932 ps_printf(p, "%%PDF-1.1\n");
934 ps_printf(p, "<<\n");
935 ps_printf(p, ">>\n");
936 ps_printf(p, "endobj\n");
938 for (i = 0; i < (int)TERMFONT__MAX; i++) {
939 pdf_obj(p, (size_t)i + 3);
940 ps_printf(p, "<<\n");
941 ps_printf(p, "/Type /Font\n");
942 ps_printf(p, "/Subtype /Type1\n");
943 ps_printf(p, "/Name /F%d\n", i);
944 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
945 ps_printf(p, ">>\nendobj\n");
949 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
950 p->ps->pscol = p->ps->left;
951 p->ps->psrow = p->ps->top;
952 p->ps->flags |= PS_NEWPAGE;
953 ps_setfont(p, TERMFONT_NONE);
957 ps_pletter(struct termp *p, int c)
962 * If we haven't opened a page context, then output that we're
963 * in a new page and make sure the font is correctly set.
966 if (PS_NEWPAGE & p->ps->flags) {
967 if (TERMTYPE_PS == p->type) {
968 ps_printf(p, "%%%%Page: %zu %zu\n",
969 p->ps->pages + 1, p->ps->pages + 1);
970 ps_printf(p, "f%d\n", (int)p->ps->lastf);
972 pdf_obj(p, p->ps->pdfbody +
974 ps_printf(p, "<<\n");
975 ps_printf(p, "/Length %zu 0 R\n",
976 p->ps->pdfbody + 1 + p->ps->pages * 4);
977 ps_printf(p, ">>\nstream\n");
979 p->ps->pdflastpg = p->ps->pdfbytes;
980 p->ps->flags &= ~PS_NEWPAGE;
984 * If we're not in a PostScript "word" context, then open one
985 * now at the current cursor.
988 if ( ! (PS_INLINE & p->ps->flags)) {
989 if (TERMTYPE_PS != p->type) {
990 ps_printf(p, "BT\n/F%d %zu Tf\n",
991 (int)p->ps->lastf, p->ps->scale);
992 ps_printf(p, "%.3f %.3f Td\n(",
993 AFM2PNT(p, p->ps->pscol),
994 AFM2PNT(p, p->ps->psrow));
996 ps_printf(p, "%.3f", AFM2PNT(p, p->ps->pscol));
997 if (p->ps->psrow != p->ps->lastrow)
998 ps_printf(p, " %.3f",
999 AFM2PNT(p, p->ps->psrow));
1002 p->ps->flags |= PS_INLINE;
1005 assert( ! (PS_NEWPAGE & p->ps->flags));
1008 * We need to escape these characters as per the PostScript
1009 * specification. We would also escape non-graphable characters
1010 * (like tabs), but none of them would get to this point and
1011 * it's superfluous to abort() on them.
1018 ps_putchar(p, '\\');
1024 /* Write the character and adjust where we are on the page. */
1026 f = (int)p->ps->lastf;
1028 if (c <= 32 || c - 32 >= MAXCHAR)
1031 ps_putchar(p, (char)c);
1033 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
1037 ps_pclose(struct termp *p)
1041 * Spit out that we're exiting a word context (this is a
1042 * "partial close" because we don't check the last-char buffer
1046 if ( ! (PS_INLINE & p->ps->flags))
1049 if (TERMTYPE_PS != p->type)
1050 ps_printf(p, ") Tj\nET\n");
1051 else if (p->ps->psrow == p->ps->lastrow)
1052 ps_printf(p, ")c\n");
1054 ps_printf(p, ")s\n");
1055 p->ps->lastrow = p->ps->psrow;
1058 p->ps->flags &= ~PS_INLINE;
1061 /* If we have a `last' char that wasn't printed yet, print it now. */
1063 ps_plast(struct termp *p)
1067 if (p->ps->last == '\0')
1070 /* Check the font mode; open a new scope if it doesn't match. */
1072 if (p->ps->nextf != p->ps->lastf) {
1074 ps_setfont(p, p->ps->nextf);
1076 p->ps->nextf = TERMFONT_NONE;
1079 * For an overstrike, if a previous character
1080 * was wider, advance to center the new one.
1083 if (p->ps->pscolnext) {
1084 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx;
1085 if (p->ps->pscol + wx < p->ps->pscolnext)
1086 p->ps->pscol = (p->ps->pscol +
1087 p->ps->pscolnext - wx) / 2;
1090 ps_pletter(p, p->ps->last);
1094 * For an overstrike, if a previous character
1095 * was wider, advance to the end of the old one.
1098 if (p->ps->pscol < p->ps->pscolnext) {
1100 p->ps->pscol = p->ps->pscolnext;
1105 ps_letter(struct termp *p, int arg)
1110 c = arg >= 128 || arg <= 0 ? '?' : arg;
1113 * When receiving a backspace, merely flag it.
1114 * We don't know yet whether it is
1115 * a font instruction or an overstrike.
1119 assert(p->ps->last != '\0');
1120 assert( ! (p->ps->flags & PS_BACKSP));
1121 p->ps->flags |= PS_BACKSP;
1126 * Decode font instructions.
1129 if (p->ps->flags & PS_BACKSP) {
1130 if (p->ps->last == '_') {
1131 switch (p->ps->nextf) {
1135 p->ps->nextf = TERMFONT_BI;
1138 p->ps->nextf = TERMFONT_UNDER;
1141 p->ps->flags &= ~PS_BACKSP;
1144 if (p->ps->last == c) {
1145 switch (p->ps->nextf) {
1148 case TERMFONT_UNDER:
1149 p->ps->nextf = TERMFONT_BI;
1152 p->ps->nextf = TERMFONT_BOLD;
1154 p->ps->flags &= ~PS_BACKSP;
1159 * This is not a font instruction, but rather
1160 * the next character. Prepare for overstrike.
1163 savecol = p->ps->pscol;
1168 * We found the next character, so the font instructions
1169 * for the previous one are complete.
1170 * Use them and print it.
1176 * Do not print the current character yet because font
1177 * instructions might follow; only remember the character.
1178 * It will get printed later from ps_plast().
1184 * For an overstrike, back up to the previous position.
1185 * If the previous character is wider than any it overstrikes,
1186 * remember the current position, because it might also be
1187 * wider than all that will overstrike it.
1190 if (savecol != SIZE_MAX) {
1191 if (p->ps->pscolnext < p->ps->pscol)
1192 p->ps->pscolnext = p->ps->pscol;
1194 p->ps->pscol = savecol;
1195 p->ps->flags &= ~PS_BACKSP;
1197 p->ps->pscolnext = 0;
1201 ps_advance(struct termp *p, size_t len)
1205 * Advance some spaces. This can probably be made smarter,
1206 * i.e., to have multiple space-separated words in the same
1207 * scope, but this is easier: just close out the current scope
1208 * and readjust our column settings.
1213 p->ps->pscol += len;
1217 ps_endline(struct termp *p)
1220 /* Close out any scopes we have open: we're at eoln. */
1226 * If we're in the margin, don't try to recalculate our current
1227 * row. XXX: if the column tries to be fancy with multiple
1228 * lines, we'll do nasty stuff.
1231 if (PS_MARGINS & p->ps->flags)
1236 p->ps->pscol = p->ps->left;
1238 /* If we haven't printed anything, return. */
1240 if (PS_NEWPAGE & p->ps->flags)
1244 * Put us down a line. If we're at the page bottom, spit out a
1245 * showpage and restart our row.
1248 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) {
1249 p->ps->psrow -= p->ps->lineheight;
1255 p->tcol->offset -= p->ti;
1260 ps_setfont(struct termp *p, enum termfont f)
1263 assert(f < TERMFONT__MAX);
1267 * If we're still at the top of the page, let the font-setting
1268 * be delayed until we actually have stuff to print.
1271 if (PS_NEWPAGE & p->ps->flags)
1274 if (TERMTYPE_PS == p->type)
1275 ps_printf(p, "f%d\n", (int)f);
1277 ps_printf(p, "/F%d %zu Tf\n",
1278 (int)f, p->ps->scale);
1282 ps_width(const struct termp *p, int c)
1285 if (c <= 32 || c - 32 >= MAXCHAR)
1290 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx;
1294 ps_hspan(const struct termp *p, const struct roffsu *su)
1299 * All of these measurements are derived by converting from the
1300 * native measurement to AFM units.
1305 * Traditionally, the default unit is fixed to the
1306 * output media. So this would refer to the point. In
1307 * mandoc(1), however, we stick to the default terminal
1308 * scaling unit so that output is the same regardless
1311 r = PNT2AFM(p, su->scale * 72.0 / 240.0);
1314 r = PNT2AFM(p, su->scale * 72.0 / 2.54);
1318 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
1322 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
1325 r = PNT2AFM(p, su->scale * 72.0);
1329 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0;
1332 r = PNT2AFM(p, su->scale * 12.0);
1335 r = PNT2AFM(p, su->scale * 1.0);
1338 r = su->scale * p->ps->lineheight;
1349 ps_growbuf(struct termp *p, size_t sz)
1351 if (p->ps->psmargcur + sz <= p->ps->psmargsz)
1354 if (sz < PS_BUFSLOP)
1357 p->ps->psmargsz += sz;
1358 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz);