X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/halibut/blobdiff_plain/a615a7788bdbdda26074ce356cefdfbf887e4e34..3e32e06c2e95cae66f921be9da2a0993f4fde752:/bk_pdf.c diff --git a/bk_pdf.c b/bk_pdf.c index ce71c5e..0a36ad9 100644 --- a/bk_pdf.c +++ b/bk_pdf.c @@ -38,9 +38,13 @@ static void pdf_string(void (*add)(object *, char const *), static void pdf_string_len(void (*add)(object *, char const *), object *, char const *, int); static void objref(object *o, object *dest); +static char *pdf_outline_convert(wchar_t *s, int *len); + +static int is_std_font(char const *name); static void make_pages_node(object *node, object *parent, page_data *first, - page_data *last, object *resources); + page_data *last, object *resources, + object *mediabox); static int make_outline(object *parent, outline_element *start, int n, int open); static int pdf_versionid(FILE *fp, word *words); @@ -56,7 +60,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, char *filename; paragraph *p; objlist olist; - object *o, *cat, *outlines, *pages, *resources; + object *o, *info, *cat, *outlines, *pages, *resources, *mediabox; int fileoff; IGNORE(keywords); @@ -64,7 +68,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, filename = dupstr("output.pdf"); for (p = sourceform; p; p = p->next) { - if (p->type == para_Config && p->parent) { + if (p->type == para_Config) { if (!ustricmp(p->keyword, L"pdf-filename")) { sfree(filename); filename = dupstr(adv(p->origkeyword)); @@ -75,6 +79,29 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, olist.head = olist.tail = NULL; olist.number = 1; + { + char buf[256]; + + info = new_object(&olist); + objtext(info, "<<\n"); + if (doc->n_outline_elements > 0) { + char *title; + int titlelen; + + title = + pdf_outline_convert(doc->outline_elements->pdata->outline_title, + &titlelen); + objtext(info, "/Title "); + pdf_string_len(objtext, info, title, titlelen); + sfree(title); + objtext(info, "\n"); + } + objtext(info, "/Producer "); + sprintf(buf, "Halibut, %s", version); + pdf_string(objtext, info, buf); + objtext(info, "\n>>\n"); + } + cat = new_object(&olist); if (doc->n_outline_elements > 0) outlines = new_object(&olist); @@ -123,7 +150,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, objtext(font, "<<\n/Type /Font\n/Subtype /Type1\n/Name /"); objtext(font, fe->name); objtext(font, "\n/BaseFont /"); - objtext(font, fe->font->name); + objtext(font, fe->font->info->name); objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences ["); for (i = 0; i < 256; i++) { @@ -137,29 +164,99 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, objtext(font, "\n]\n>>\n"); - { +#define FF_FIXEDPITCH 0x00000001 +#define FF_SERIF 0x00000002 +#define FF_SYMBOLIC 0x00000004 +#define FF_SCRIPT 0x00000008 +#define FF_NONSYMBOLIC 0x00000020 +#define FF_ITALIC 0x00000040 +#define FF_ALLCAP 0x00010000 +#define FF_SMALLCAP 0x00020000 +#define FF_FORCEBOLD 0x00040000 + + if (!is_std_font(fe->font->info->name)){ object *widths = new_object(&olist); - objtext(font, "/FirstChar 0\n/LastChar 255\n/Widths "); + object *fontdesc = new_object(&olist); + int firstchar = -1, lastchar = -1; + char buf[80]; + font_info const *fi = fe->font->info; + int flags; + for (i = 0; i < 256; i++) + if (fe->indices[i] >= 0) { + if (firstchar < 0) firstchar = i; + lastchar = i; + } + sprintf(buf, "/FirstChar %d\n/LastChar %d\n/Widths ", + firstchar, lastchar); + objtext(font, buf); objref(font, widths); objtext(font, "\n"); objtext(widths, "[\n"); - for (i = 0; i < 256; i++) { - char buf[80]; + for (i = firstchar; i <= lastchar; i++) { double width; if (fe->indices[i] < 0) width = 0.0; else - width = fe->font->widths[fe->indices[i]]; - sprintf(buf, "%g\n", 1000.0 * width / 4096.0); + width = fi->widths[fe->indices[i]]; + sprintf(buf, "%g\n", 1000.0 * width / FUNITS_PER_PT); objtext(widths, buf); } objtext(widths, "]\n"); + objtext(font, "/FontDescriptor "); + objref(font, fontdesc); + objtext(fontdesc, "<<\n/Type /FontDescriptor\n/Name /"); + objtext(fontdesc, fi->name); + flags = 0; + if (fi->italicangle) flags |= FF_ITALIC; + flags |= FF_NONSYMBOLIC; + sprintf(buf, "\n/Flags %d\n", flags); + objtext(fontdesc, buf); + sprintf(buf, "/FontBBox [%g %g %g %g]\n", fi->fontbbox[0], + fi->fontbbox[1], fi->fontbbox[2], fi->fontbbox[3]); + objtext(fontdesc, buf); + sprintf(buf, "/ItalicAngle %g\n", fi->italicangle); + objtext(fontdesc, buf); + sprintf(buf, "/Ascent %g\n", fi->ascent); + objtext(fontdesc, buf); + sprintf(buf, "/Descent %g\n", fi->descent); + objtext(fontdesc, buf); + sprintf(buf, "/CapHeight %g\n", fi->capheight); + objtext(fontdesc, buf); + sprintf(buf, "/XHeight %g\n", fi->xheight); + objtext(fontdesc, buf); + sprintf(buf, "/StemH %g\n", fi->stemh); + objtext(fontdesc, buf); + sprintf(buf, "/StemV %g\n", fi->stemv); + objtext(fontdesc, buf); + if (fi->fp) { + object *fontfile = new_object(&olist); + char buf[513]; + size_t len; + rewind(fi->fp); + do { + len = fread(buf, 1, sizeof(buf)-1, fi->fp); + buf[len] = 0; + objstream(fontfile, buf); + } while (len == sizeof(buf)-1); + objtext(fontdesc, "/FontFile "); + objref(fontdesc, fontfile); + } + objtext(fontdesc, "\n>>\n"); } - objtext(font, ">>\n"); + objtext(font, "\n>>\n"); } objtext(resources, ">>\n>>\n"); + { + char buf[255]; + mediabox = new_object(&olist); + sprintf(buf, "[0 0 %g %g]\n", + doc->paper_width / FUNITS_PER_PT, + doc->paper_height / FUNITS_PER_PT); + objtext(mediabox, buf); + } + /* * Define the page objects for each page, and get each one * ready to have a `Parent' specification added to it. @@ -175,7 +272,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, /* * Recursively build the page tree. */ - make_pages_node(pages, NULL, doc->pages, NULL, resources); + make_pages_node(pages, NULL, doc->pages, NULL, resources, mediabox); /* * Create and render the individual pages. @@ -200,11 +297,9 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, * that it's inheritable and may be omitted if it's present * in a Pages node. In our case it is: it's present in the * topmost /Pages node because we carefully put it there. - * So we don't need a /Resources entry here. + * So we don't need a /Resources entry here. The same applies + * to /MediaBox. */ - sprintf(buf, "/MediaBox [0 0 %g %g]\n", - doc->paper_width / 4096.0, doc->paper_height / 4096.0); - objtext(opage, buf); /* * Now we're ready to define a content stream containing @@ -220,8 +315,9 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, */ for (r = page->first_rect; r; r = r->next) { char buf[512]; - sprintf(buf, "%g %g %g %g re f\n", r->x / 4096.0, - r->y / 4096.0, r->w / 4096.0, r->h / 4096.0); + sprintf(buf, "%g %g %g %g re f\n", + r->x / FUNITS_PER_PT, r->y / FUNITS_PER_PT, + r->w / FUNITS_PER_PT, r->h / FUNITS_PER_PT); objstream(cstr, buf); } @@ -265,10 +361,11 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, */ if (lx < 0) { sprintf(buf, "1 0 0 1 %g %g Tm ", - frag->x/4096.0, frag->y/4096.0); + frag->x/FUNITS_PER_PT, frag->y/FUNITS_PER_PT); } else { sprintf(buf, "%g %g Td ", - (frag->x - lx)/4096.0, (frag->y - ly)/4096.0); + (frag->x - lx)/FUNITS_PER_PT, + (frag->y - ly)/FUNITS_PER_PT); } objstream(cstr, buf); lx = x = frag->x; @@ -291,7 +388,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, if (frag->x != x) { sprintf(buf, "%g", (x - frag->x) * 1000.0 / - (4096.0 * frag->fontsize)); + (FUNITS_PER_PT * frag->fontsize)); objstream(cstr, buf); } pdf_string(objstream, cstr, frag->text); @@ -330,8 +427,8 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, objtext(annot, "<<\n/Type /Annot\n/Subtype /Link\n/Rect ["); sprintf(buf, "%g %g %g %g", - xr->lx / 4096.0, xr->by / 4096.0, - xr->rx / 4096.0, xr->ty / 4096.0); + xr->lx / FUNITS_PER_PT, xr->by / FUNITS_PER_PT, + xr->rx / FUNITS_PER_PT, xr->ty / FUNITS_PER_PT); objtext(annot, buf); objtext(annot, "]\n/Border [0 0 0]\n"); @@ -453,8 +550,8 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, /* * Trailer */ - fprintf(fp, "trailer\n<<\n/Size %d\n/Root %d 0 R\n>>\n", - olist.tail->number + 1, cat->number); + fprintf(fp, "trailer\n<<\n/Size %d\n/Root %d 0 R\n/Info %d 0 R\n>>\n", + olist.tail->number + 1, cat->number, info->number); fprintf(fp, "startxref\n%d\n%%%%EOF\n", fileoff); fclose(fp); @@ -464,7 +561,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords, static object *new_object(objlist *list) { - object *obj = mknew(object); + object *obj = snew(object); obj->list = list; @@ -505,8 +602,24 @@ static void objref(object *o, object *dest) rdaddsc(&o->main, buf); } +static char const * const stdfonts[] = { + "Times-Roman", "Times-Bold", "Times-Italic", "Times-BoldItalic", + "Helvetica", "Helvetica-Bold", "Helvetica-Oblique","Helvetica-BoldOblique", + "Courier", "Courier-Bold", "Courier-Oblique", "Courier-BoldOblique", + "Symbol", "ZapfDingbats" +}; + +static int is_std_font(char const *name) { + unsigned i; + for (i = 0; i < lenof(stdfonts); i++) + if (strcmp(name, stdfonts[i]) == 0) + return TRUE; + return FALSE; +} + static void make_pages_node(object *node, object *parent, page_data *first, - page_data *last, object *resources) + page_data *last, object *resources, + object *mediabox) { int count; page_data *page; @@ -554,7 +667,8 @@ static void make_pages_node(object *node, object *parent, page_data *first, objtext((object *)thisfirst->spare, "\n"); } else { object *newnode = new_object(node->list); - make_pages_node(newnode, node, thisfirst, thislast, NULL); + make_pages_node(newnode, node, thisfirst, thislast, + NULL, NULL); objref(node, newnode); } objtext(node, "\n"); @@ -581,6 +695,11 @@ static void make_pages_node(object *node, object *parent, page_data *first, objref(node, resources); objtext(node, "\n"); } + if (mediabox) { + objtext(node, "/MediaBox "); + objref(node, mediabox); + objtext(node, "\n"); + } objtext(node, ">>\n"); } @@ -648,6 +767,7 @@ static int make_outline(object *parent, outline_element *items, int n, last = curr; objtext(curr, "<<\n/Title "); pdf_string_len(objtext, curr, title, titlelen); + sfree(title); objtext(curr, "\n/Parent "); objref(curr, parent); objtext(curr, "\n/Dest [");