Generate rather more compact /Differences tables for font encodings, mostly

[sgt/halibut] / bk_pdf.c

diff --git a/bk_pdf.c b/bk_pdf.c
index 034cff1..2697b16 100644 (file)
--- a/bk_pdf.c
+++ b/bk_pdf.c
@@ -40,6 +40,8 @@ static void pdf_string_len(void (*add)(object *, char const *),
 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,
                            object *mediabox);
@@ -131,7 +133,7 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
     objtext(resources, "<<\n/Font <<\n");
     for (fe = doc->fonts->head; fe; fe = fe->next) {
        char fname[40];
-       int i;
+       int i, prev;
        object *font;
 
        sprintf(fname, "f%d", font_index++);
@@ -155,17 +157,34 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
            char buf[20];
            if (!fe->vector[i])
                continue;
-           sprintf(buf, "\n%d /", i);
-           objtext(font, buf);
-           objtext(font, fe->vector[i] ? fe->vector[i] : ".notdef");
+           if (i != prev + 1) {
+               sprintf(buf, "\n%d", i);
+               objtext(font, buf);
+           }
+           objtext(font, i % 8 ? "/" : "\n/");
+           objtext(font, fe->vector[i]);
+           prev = i;
        }
 
        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);
+           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;
@@ -178,19 +197,58 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
            objtext(font, "\n");
            objtext(widths, "[\n");
            for (i = firstchar; i <= lastchar; i++) {
-               char buf[80];
                double width;
                if (fe->indices[i] < 0)
                    width = 0.0;
                else
-                   width = fe->font->info->widths[fe->indices[i]];
+                   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");
 
@@ -548,6 +606,21 @@ 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,
                            object *mediabox)