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Diffstat (limited to 'Build/source/texk/web2c/luatexdir/font/writet3.w')
-rw-r--r-- | Build/source/texk/web2c/luatexdir/font/writet3.w | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/luatexdir/font/writet3.w b/Build/source/texk/web2c/luatexdir/font/writet3.w new file mode 100644 index 00000000000..9301ba5f4f3 --- /dev/null +++ b/Build/source/texk/web2c/luatexdir/font/writet3.w @@ -0,0 +1,331 @@ +% writet3.w + +% Copyright 1996-2006 Han The Thanh <thanh@@pdftex.org> +% Copyright 2006-2010 Taco Hoekwater <taco@@luatex.org> + +% This file is part of LuaTeX. + +% LuaTeX is free software; you can redistribute it and/or modify it under +% the terms of the GNU General Public License as published by the Free +% Software Foundation; either version 2 of the License, or (at your +% option) any later version. + +% LuaTeX is distributed in the hope that it will be useful, but WITHOUT +% ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +% FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +% License for more details. + +% You should have received a copy of the GNU General Public License along +% with LuaTeX; if not, see <http://www.gnu.org/licenses/>. + +@ @c +static const char _svn_version[] = + "$Id: writet3.w 3584 2010-04-02 17:45:55Z hhenkel $ " +"$URL: http://foundry.supelec.fr/svn/luatex/tags/beta-0.60.0/source/texk/web2c/luatexdir/font/writet3.w $"; + +#include "ptexlib.h" +#include <kpathsea/tex-glyph.h> +#include <kpathsea/magstep.h> +#include <string.h> + +#define T3_BUF_SIZE 1024 + +typedef char t3_line_entry; +define_array(t3_line); + +FILE *t3_file; +static boolean t3_image_used; + +static int t3_char_procs[256]; +static float t3_char_widths[256]; +static int t3_glyph_num; +static float t3_font_scale; +static int t3_b0, t3_b1, t3_b2, t3_b3; +static boolean is_pk_font; + +/* not static because used by pkin.c */ +unsigned char *t3_buffer = NULL; +int t3_size = 0; +int t3_curbyte = 0; + +#define t3_check_eof() \ + if (t3_eof()) \ + pdftex_fail("unexpected end of file"); + +@ +@c +static void update_bbox(int llx, int lly, int urx, int ury, + boolean is_first_glyph) +{ + if (is_first_glyph) { + t3_b0 = llx; + t3_b1 = lly; + t3_b2 = urx; + t3_b3 = ury; + } else { + if (llx < t3_b0) + t3_b0 = llx; + if (lly < t3_b1) + t3_b1 = lly; + if (urx > t3_b2) + t3_b2 = urx; + if (ury > t3_b3) + t3_b3 = ury; + } +} + +static int get_pk_font_scale(internal_font_number f, int precision, + int scale_factor) +{ + return + divide_scaled(scale_factor, + divide_scaled(font_size(f), one_hundred_bp, + precision + 2), 0); +} + +static int pk_char_width(internal_font_number f, scaled w, int precision, + int scale_factor) +{ + return + divide_scaled(divide_scaled(w, font_size(f), 7), + get_pk_font_scale(f, precision, scale_factor), 0); +} + +@ +@c +static boolean writepk(PDF pdf, internal_font_number f) +{ + kpse_glyph_file_type font_ret; + int llx, lly, urx, ury; + int cw, rw, i, j; + halfword *row; + char *name; + char *ftemp = NULL; + chardesc cd; + boolean is_null_glyph, check_preamble; + int dpi; + int callback_id = 0; + int file_opened = 0; + unsigned mallocsize = 0; + xfree(t3_buffer); + t3_curbyte = 0; + t3_size = 0; + + callback_id = callback_defined(find_pk_file_callback); + + if (callback_id > 0) { + dpi = round((float) pdf->pk_resolution * + (((float) font_size(f)) / (float) font_dsize(f))); + /* <base>.dpi/<fontname>.<tdpi>pk */ + cur_file_name = font_name(f); + mallocsize = (unsigned) (strlen(cur_file_name) + 24 + 9); + name = xmalloc(mallocsize); + snprintf(name, (size_t) mallocsize, "%ddpi/%s.%dpk", + (int) pdf->pk_resolution, cur_file_name, (int) dpi); + if (run_callback(callback_id, "S->S", name, &ftemp)) { + if (ftemp != NULL && strlen(ftemp)) { + free(name); + name = xstrdup(ftemp); + free(ftemp); + } + } + } else { + dpi = (int) + kpse_magstep_fix((unsigned) round + ((float) pdf->pk_resolution * + ((float) font_size(f) / (float) font_dsize(f))), + (unsigned) pdf->pk_resolution, NULL); + cur_file_name = font_name(f); + name = kpse_find_pk(cur_file_name, (unsigned) dpi, &font_ret); + if (name == NULL || + !FILESTRCASEEQ(cur_file_name, font_ret.name) || + !kpse_bitmap_tolerance((float) font_ret.dpi, (float) dpi)) { + pdftex_fail("Font %s at %i not found", cur_file_name, (int) dpi); + } + } + callback_id = callback_defined(read_pk_file_callback); + if (callback_id > 0) { + if (! + (run_callback + (callback_id, "S->bSd", name, &file_opened, &t3_buffer, &t3_size) + && file_opened && t3_size > 0)) { + pdftex_warn("Font %s at %i not found", cur_file_name, (int) dpi); + cur_file_name = NULL; + return false; + } + } else { + t3_file = xfopen(name, FOPEN_RBIN_MODE); + recorder_record_input(name); + t3_read_file(); + t3_close(); + } + t3_image_used = true; + is_pk_font = true; + if (tracefilenames) + tex_printf(" <%s", (char *) name); + cd.rastersize = 256; + cd.raster = xtalloc((unsigned long) cd.rastersize, halfword); + check_preamble = true; + while (readchar(check_preamble, &cd) != 0) { + check_preamble = false; + if (!pdf_char_marked(f, cd.charcode)) + continue; + t3_char_widths[cd.charcode] = (float) + pk_char_width(f, get_charwidth(f, cd.charcode), + pdf->decimal_digits, pdf->pk_scale_factor); + if (cd.cwidth < 1 || cd.cheight < 1) { + cd.xescape = cd.cwidth = round(t3_char_widths[cd.charcode] / 100.0); + cd.cheight = 1; + cd.xoff = 0; + cd.yoff = 0; + is_null_glyph = true; + } else + is_null_glyph = false; + llx = -cd.xoff; + lly = cd.yoff - cd.cheight + 1; + urx = cd.cwidth + llx + 1; + ury = cd.cheight + lly; + update_bbox(llx, lly, urx, ury, t3_glyph_num == 0); + t3_glyph_num++; + pdf_new_dict(pdf, obj_type_others, 0, 0); + t3_char_procs[cd.charcode] = pdf->obj_ptr; + pdf_begin_stream(pdf); + pdf_print_real(pdf, (int) t3_char_widths[cd.charcode], 2); + pdf_printf(pdf, " 0 %i %i %i %i d1\n", + (int) llx, (int) lly, (int) urx, (int) ury); + if (is_null_glyph) + goto end_stream; + pdf_printf(pdf, "q\n%i 0 0 %i %i %i cm\nBI\n", (int) cd.cwidth, + (int) cd.cheight, (int) llx, (int) lly); + pdf_printf(pdf, "/W %i\n/H %i\n", (int) cd.cwidth, (int) cd.cheight); + pdf_puts(pdf, "/IM true\n/BPC 1\n/D [1 0]\nID "); + cw = (cd.cwidth + 7) / 8; + rw = (cd.cwidth + 15) / 16; + row = cd.raster; + for (i = 0; i < cd.cheight; i++) { + for (j = 0; j < rw - 1; j++) { + pdf_out(pdf, (unsigned char) (*row / 256)); + pdf_out(pdf, (unsigned char) (*row % 256)); + row++; + } + pdf_out(pdf, (unsigned char) (*row / 256)); + if (2 * rw == cw) + pdf_out(pdf, (unsigned char) (*row % 256)); + row++; + } + pdf_puts(pdf, "\nEI\nQ\n"); + end_stream: + pdf_end_stream(pdf); + } + xfree(cd.raster); + cur_file_name = NULL; + return true; +} + +@ +@c +void writet3(PDF pdf, internal_font_number f) +{ + + int i; + int wptr, eptr, cptr; + int first_char, last_char; + int pk_font_scale; + boolean is_notdef; + + t3_glyph_num = 0; + t3_image_used = false; + for (i = 0; i < 256; i++) { + t3_char_procs[i] = 0; + t3_char_widths[i] = 0; + } + is_pk_font = false; + + xfree(t3_buffer); + t3_curbyte = 0; + t3_size = 0; + if (!writepk(pdf, f)) + return; + for (i = font_bc(f); i <= font_ec(f); i++) + if (pdf_char_marked(f, i)) + break; + first_char = i; + for (i = font_ec(f); i > first_char; i--) + if (pdf_char_marked(f, i)) + break; + last_char = i; + pdf_begin_dict(pdf, pdf_font_num(f), 1); /* Type 3 font dictionary */ + pdf_puts(pdf, "/Type /Font\n/Subtype /Type3\n"); + pdf_printf(pdf, "/Name /F%i\n", (int) f); + if (pdf_font_attr(f) != get_nullstr() && pdf_font_attr(f) != 0) { + pdf_print(pdf, pdf_font_attr(f)); + pdf_puts(pdf, "\n"); + } + if (is_pk_font) { + pk_font_scale = + get_pk_font_scale(f, pdf->decimal_digits, pdf->pk_scale_factor); + pdf_puts(pdf, "/FontMatrix ["); + pdf_print_real(pdf, pk_font_scale, 5); + pdf_puts(pdf, " 0 0 "); + pdf_print_real(pdf, pk_font_scale, 5); + pdf_puts(pdf, " 0 0]\n"); + } else + pdf_printf(pdf, "/FontMatrix [%g 0 0 %g 0 0]\n", + (double) t3_font_scale, (double) t3_font_scale); + pdf_printf(pdf, "/%s [ %i %i %i %i ]\n", + font_key[FONTBBOX1_CODE].pdfname, + (int) t3_b0, (int) t3_b1, (int) t3_b2, (int) t3_b3); + pdf_printf(pdf, "/Resources << /ProcSet [ /PDF %s] >>\n", + t3_image_used ? "/ImageB " : ""); + pdf_printf(pdf, "/FirstChar %i\n/LastChar %i\n", first_char, last_char); + wptr = pdf_new_objnum(pdf); + eptr = pdf_new_objnum(pdf); + cptr = pdf_new_objnum(pdf); + pdf_printf(pdf, "/Widths %i 0 R\n/Encoding %i 0 R\n/CharProcs %i 0 R\n", + (int) wptr, (int) eptr, (int) cptr); + pdf_end_dict(pdf); + pdf_begin_obj(pdf, wptr, 1); /* chars width array */ + pdf_puts(pdf, "["); + if (is_pk_font) + for (i = first_char; i <= last_char; i++) { + pdf_print_real(pdf, (int) t3_char_widths[i], 2); + pdf_puts(pdf, " "); + } else + for (i = first_char; i <= last_char; i++) + pdf_printf(pdf, "%i ", (int) t3_char_widths[i]); + pdf_puts(pdf, "]\n"); + pdf_end_obj(pdf); + pdf_begin_dict(pdf, eptr, 1); /* encoding dictionary */ + pdf_printf(pdf, "/Type /Encoding\n/Differences [%i", first_char); + if (t3_char_procs[first_char] == 0) { + pdf_printf(pdf, "/%s", notdef); + is_notdef = true; + } else { + pdf_printf(pdf, "/a%i", first_char); + is_notdef = false; + } + for (i = first_char + 1; i <= last_char; i++) { + if (t3_char_procs[i] == 0) { + if (!is_notdef) { + pdf_printf(pdf, " %i/%s", i, notdef); + is_notdef = true; + } + } else { + if (is_notdef) { + pdf_printf(pdf, " %i", i); + is_notdef = false; + } + pdf_printf(pdf, "/a%i", i); + } + } + pdf_puts(pdf, "]\n"); + pdf_end_dict(pdf); + pdf_begin_dict(pdf, cptr, 1); /* CharProcs dictionary */ + for (i = first_char; i <= last_char; i++) + if (t3_char_procs[i] != 0) + pdf_printf(pdf, "/a%i %i 0 R\n", (int) i, (int) t3_char_procs[i]); + pdf_end_dict(pdf); + if (tracefilenames) + tex_printf(">"); + cur_file_name = NULL; +} |