X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fopen-type-font.cc;h=730d6cef3580cef522f924b503b4ee9c51f85d55;hb=b872748c6aa8bb721ced458691b38ac2fac5dfc8;hp=6b2df26c9229b2e5077bad8587a70729064db397;hpb=a6bd229f7fe1dc4a03478e14ccc0c0c66b225061;p=lilypond.git diff --git a/lily/open-type-font.cc b/lily/open-type-font.cc index 6b2df26c92..730d6cef35 100644 --- a/lily/open-type-font.cc +++ b/lily/open-type-font.cc @@ -1,7 +1,7 @@ /* This file is part of LilyPond, the GNU music typesetter. - Copyright (C) 2004--2010 Han-Wen Nienhuys + Copyright (C) 2004--2015 Han-Wen Nienhuys LilyPond is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -18,12 +18,22 @@ */ #include "open-type-font.hh" +#include "freetype.hh" + +#ifdef FT_FONT_FORMATS_H +/* FreeType 2.6+ */ +#include FT_FONT_FORMATS_H +#else +/* FreeType 2.5.5 and earlier */ +#include FT_XFREE86_H +#define FT_Get_Font_Format FT_Get_X11_Font_Format +#endif #include using namespace std; -#include +#include FT_TRUETYPE_TABLES_H #include "dimensions.hh" #include "international.hh" @@ -36,29 +46,29 @@ load_table (char const *tag_str, FT_Face face, FT_ULong *length) *length = 0; FT_ULong tag = FT_MAKE_TAG (tag_str[0], tag_str[1], tag_str[2], tag_str[3]); - int error_code = FT_Load_Sfnt_Table (face, tag, 0, NULL, length); + FT_Error error_code = FT_Load_Sfnt_Table (face, tag, 0, NULL, length); if (!error_code) { FT_Byte *buffer = (FT_Byte *) malloc (*length); if (buffer == NULL) - error (_f ("cannot allocate %lu bytes", *length)); + error (_f ("cannot allocate %lu bytes", *length)); error_code = FT_Load_Sfnt_Table (face, tag, 0, buffer, length); if (error_code) - error (_f ("cannot load font table: %s", tag_str)); + error (_f ("cannot load font table: %s", tag_str)); return buffer; } else - programming_error (_f ("Free type error: %s", - freetype_error_string (error_code).c_str () - )); + programming_error (_f ("FreeType error: %s", + freetype_error_string (error_code).c_str () + )); return 0; } string -Open_type_font::get_otf_table (string tag) const +Open_type_font::get_otf_table (const string &tag) const { return ::get_otf_table (face_, tag); } @@ -72,16 +82,19 @@ load_scheme_table (char const *tag_str, FT_Face face) SCM tab = SCM_EOL; if (buffer) { - string contents ((char const*)buffer, length); + string contents ((char const *)buffer, length); contents = "(quote (" + contents + "))"; +#if GUILEV2 + tab = scm_eval_string (scm_from_utf8_string (contents.c_str ())); +#else tab = scm_c_eval_string (contents.c_str ()); +#endif free (buffer); } return tab; } - Open_type_font::~Open_type_font () { FT_Done_Face (face_); @@ -91,33 +104,146 @@ Open_type_font::~Open_type_font () UGH fix naming */ string -get_otf_table (FT_Face face, string tag) +get_otf_table (FT_Face face, const string &tag) { FT_ULong len; FT_Byte *tab = load_table (tag.c_str (), face, &len); - string ret ((char const*) tab, len); + string ret ((char const *) tab, len); free (tab); return ret; } FT_Face -open_ft_face (string str, FT_Long idx) +open_ft_face (const string &str, FT_Long idx) { FT_Face face; - int error_code = FT_New_Face (freetype2_library, str.c_str (), idx, &face); + FT_Error error_code = FT_New_Face (freetype2_library, str.c_str (), idx, &face); if (error_code == FT_Err_Unknown_File_Format) error (_f ("unsupported font format: %s", str.c_str ())); else if (error_code) - error (_f ("error reading font file %s: %s", - str.c_str (), - freetype_error_string (error_code).c_str ())); + error (_f ("error reading font file %s: %s", + str.c_str (), + freetype_error_string (error_code).c_str ())); return face; } +string +get_postscript_name (FT_Face face) +{ + string face_ps_name; + const char *psname = FT_Get_Postscript_Name (face); + if (psname) + face_ps_name = psname; + else + { + warning (_ ("cannot get postscript name")); + return ""; + } + + const char *fmt = FT_Get_Font_Format (face); + if (fmt) + { + if (static_cast(fmt) != "CFF") + return face_ps_name; // For non-CFF font, pass it through. + } + else + { + warning (_f ("cannot get font %s format", face_ps_name.c_str ())); + return face_ps_name; + } + + // For OTF and OTC fonts, we use data from the font's 'CFF' table only + // because other tables are not embedded in the output PS file. + string cff_table = get_otf_table (face, "CFF "); + + FT_Open_Args args; + args.flags = FT_OPEN_MEMORY; + args.memory_base = static_cast + (static_cast(cff_table.data ())); + args.memory_size = cff_table.size (); + + FT_Face cff_face; + // According to OpenType Specification ver 1.7, + // the CFF (derived from OTF and OTC) has only one name. + // So we use zero as the font index. + FT_Error error_code = FT_Open_Face (freetype2_library, &args, + 0 /* font index */, + &cff_face); + if (error_code) + { + warning (_f ("cannot read CFF %s: %s", + face_ps_name, + freetype_error_string (error_code).c_str ())); + return face_ps_name; + } + + string ret; + const char *cffname = FT_Get_Postscript_Name (cff_face); + if (cffname) + ret = cffname; + else + { + // FreeType 2.6 and 2.6.1 cannot get PS name from pure-CFF. + // (FreeType 2.5.5 and earlier does not have this issue. + // FreeType 2.6.2+ has this bug fixed.) + // So we need direct parsing of the 'CFF' table, in this case. + + debug_output (_f ("Directly parsing 'CFF' table of font %s.", + face_ps_name.c_str ())); + + // See Adobe technote '5176.CFF.pdf', sections 2 and 5-7. + size_t hdrsize = static_cast(cff_table.at(2)); + string::iterator it = cff_table.begin () + hdrsize; + + unsigned int name_index_count; + name_index_count = static_cast(*it++) << 8; + name_index_count |= static_cast(*it++); + + size_t offsize = static_cast(*it++); + + if (name_index_count && 1 <= offsize && offsize <= 4) + { + // We get the first name in the CFF's name index + // because this CFF (derived from OTF and OTC) + // has only one name. + size_t off1 = 0, off2 = 0; + for (size_t t = 0; t < offsize; t++) + off1 = ( off1 << 8 ) | static_cast(*it++); + if (off1) + { + for (size_t t = 0; t < offsize; t++) + off2 = ( off2 << 8 ) | static_cast(*it++); + } + if (off1 && off1 < off2) + { + ret.assign (&cff_table.at(hdrsize + 3 + + offsize * (name_index_count + 1) + + off1 - 1), + &cff_table.at(hdrsize + 3 + + offsize * (name_index_count + 1) + + off2 - 1)); + } + } + + if (ret.empty ()) + { + warning (_f ("cannot get font %s CFF name", face_ps_name.c_str ())); + ret = face_ps_name; + } + } + + debug_output (_f ("Replace font name from %s to %s.", + face_ps_name.c_str (), ret.c_str ())); + + FT_Done_Face (cff_face); + + return ret; +} + SCM -Open_type_font::make_otf (string str) +Open_type_font::make_otf (const string &str) { FT_Face face = open_ft_face (str, 0 /* index */); Open_type_font *otf = new Open_type_font (face); @@ -125,13 +251,17 @@ Open_type_font::make_otf (string str) return otf->self_scm (); } -Open_type_font::Open_type_font (FT_Face face) +Preinit_Open_type_font::Preinit_Open_type_font () { - face_ = face; lily_character_table_ = SCM_EOL; lily_global_table_ = SCM_EOL; lily_subfonts_ = SCM_EOL; lily_index_to_bbox_table_ = SCM_EOL; +} + +Open_type_font::Open_type_font (FT_Face face) +{ + face_ = face; lily_character_table_ = alist_to_hashq (load_scheme_table ("LILC", face_)); lily_global_table_ = alist_to_hashq (load_scheme_table ("LILY", face_)); @@ -139,6 +269,8 @@ Open_type_font::Open_type_font (FT_Face face) index_to_charcode_map_ = make_index_to_charcode_map (face_); lily_index_to_bbox_table_ = scm_c_make_hash_table (257); + + postscript_name_ = get_postscript_name (face_); } void @@ -151,13 +283,13 @@ Open_type_font::derived_mark () const } Offset -Open_type_font::attachment_point (string glyph_name) const +Open_type_font::attachment_point (const string &glyph_name) const { SCM sym = ly_symbol2scm (glyph_name.c_str ()); SCM entry = scm_hashq_ref (lily_character_table_, sym, SCM_BOOL_F); Offset o; - if (entry == SCM_BOOL_F) + if (scm_is_false (entry)) return o; SCM char_alist = entry; @@ -167,102 +299,127 @@ Open_type_font::attachment_point (string glyph_name) const } Box -Open_type_font::get_indexed_char (size_t signed_idx) const +Open_type_font::get_indexed_char_dimensions (size_t signed_idx) const { if (SCM_HASHTABLE_P (lily_index_to_bbox_table_)) { SCM box = scm_hashq_ref (lily_index_to_bbox_table_, - scm_from_unsigned (signed_idx), SCM_BOOL_F); - Box *box_ptr = Box::unsmob (box); + scm_from_unsigned_integer (signed_idx), SCM_BOOL_F); + Box *box_ptr = unsmob (box); if (box_ptr) - return *box_ptr; + return *box_ptr; } if (SCM_HASHTABLE_P (lily_character_table_)) { const size_t len = 256; char name[len]; - size_t code = FT_Get_Glyph_Name (face_, signed_idx, name, len); + FT_Error code = FT_Get_Glyph_Name (face_, FT_UInt (signed_idx), + name, FT_UInt (len)); if (code) - warning (_f ("FT_Get_Glyph_Name () Freetype error: %s", - freetype_error_string (code))); + warning (_f ("FT_Get_Glyph_Name () Freetype error: %s", + freetype_error_string (code))); SCM sym = ly_symbol2scm (name); SCM alist = scm_hashq_ref (lily_character_table_, sym, SCM_BOOL_F); - if (alist != SCM_BOOL_F) - { - SCM bbox = scm_cdr (scm_assq (ly_symbol2scm ("bbox"), alist)); - - Box b; - b[X_AXIS][LEFT] = scm_to_double (scm_car (bbox)); - bbox = scm_cdr (bbox); - b[Y_AXIS][LEFT] = scm_to_double (scm_car (bbox)); - bbox = scm_cdr (bbox); - b[X_AXIS][RIGHT] = scm_to_double (scm_car (bbox)); - bbox = scm_cdr (bbox); - b[Y_AXIS][RIGHT] = scm_to_double (scm_car (bbox)); - bbox = scm_cdr (bbox); - - b.scale (point_constant); - - scm_hashq_set_x (lily_index_to_bbox_table_, - scm_from_unsigned (signed_idx), - b.smobbed_copy ()); - return b; - } + if (scm_is_true (alist)) + { + SCM bbox = scm_cdr (scm_assq (ly_symbol2scm ("bbox"), alist)); + + Box b; + b[X_AXIS][LEFT] = scm_to_double (scm_car (bbox)); + bbox = scm_cdr (bbox); + b[Y_AXIS][LEFT] = scm_to_double (scm_car (bbox)); + bbox = scm_cdr (bbox); + b[X_AXIS][RIGHT] = scm_to_double (scm_car (bbox)); + bbox = scm_cdr (bbox); + b[Y_AXIS][RIGHT] = scm_to_double (scm_car (bbox)); + bbox = scm_cdr (bbox); + + b.scale (point_constant); + + scm_hashq_set_x (lily_index_to_bbox_table_, + scm_from_unsigned_integer (signed_idx), + b.smobbed_copy ()); + return b; + } } - FT_UInt idx = signed_idx; - FT_Load_Glyph (face_, - idx, - FT_LOAD_NO_SCALE); - - FT_Glyph_Metrics m = face_->glyph->metrics; - int hb = m.horiBearingX; - int vb = m.horiBearingY; - Box b (Interval (-hb, m.width - hb), - Interval (-vb, m.height - vb)); + Box b = get_unscaled_indexed_char_dimensions (signed_idx); b.scale (design_size () / Real (face_->units_per_EM)); return b; } +Real +Open_type_font::get_units_per_EM () const +{ + return face_->units_per_EM; +} + size_t Open_type_font::name_to_index (string nm) const { char *nm_str = (char *) nm.c_str (); - if (size_t idx = FT_Get_Name_Index (face_, nm_str)) - return idx; - - return (size_t) -1; + if (FT_UInt idx = FT_Get_Name_Index (face_, nm_str)) + return (size_t) idx; + + return (size_t) - 1; +} + +Box +Open_type_font::get_unscaled_indexed_char_dimensions (size_t signed_idx) const +{ + return ly_FT_get_unscaled_indexed_char_dimensions (face_, signed_idx); +} + +Box +Open_type_font::get_glyph_outline_bbox (size_t signed_idx) const +{ + return ly_FT_get_glyph_outline_bbox (face_, signed_idx); +} + +SCM +Open_type_font::get_glyph_outline (size_t signed_idx) const +{ + return ly_FT_get_glyph_outline (face_, signed_idx); } size_t Open_type_font::index_to_charcode (size_t i) const { - return ((Open_type_font *) this)->index_to_charcode_map_[i]; + map::const_iterator iter; + iter = index_to_charcode_map_.find (FT_UInt (i)); + + if (iter != index_to_charcode_map_.end ()) + return (size_t) iter->second; + else + { + programming_error ("Invalid index for character"); + return 0; + } } size_t Open_type_font::count () const { - return ((Open_type_font *) this)->index_to_charcode_map_.size (); + return index_to_charcode_map_.size (); } Real Open_type_font::design_size () const { SCM entry = scm_hashq_ref (lily_global_table_, - ly_symbol2scm ("design_size"), - - /* - Hmm. Design size is arbitrary for - non-design-size fonts. I vote for 1 - - which will trip errors more - quickly. --hwn. - */ - scm_from_unsigned (1)); + ly_symbol2scm ("design_size"), + + /* + Hmm. Design size is arbitrary for + non-design-size fonts. I vote for 1 - + which will trip errors more + quickly. --hwn. + */ + scm_from_unsigned_integer (1)); return scm_to_double (entry) * Real (point_constant); } @@ -293,28 +450,27 @@ Open_type_font::get_global_table () const string Open_type_font::font_name () const { - return FT_Get_Postscript_Name (face_); + return postscript_name_; } - SCM Open_type_font::glyph_list () const { SCM retval = SCM_EOL; SCM *tail = &retval; - + for (int i = 0; i < face_->num_glyphs; i++) { const size_t len = 256; char name[len]; - size_t code = FT_Get_Glyph_Name (face_, i, name, len); + FT_Error code = FT_Get_Glyph_Name (face_, i, name, len); if (code) - warning (_f ("FT_Get_Glyph_Name () error: %s", - freetype_error_string (code).c_str ())); + warning (_f ("FT_Get_Glyph_Name () error: %s", + freetype_error_string (code).c_str ())); - *tail = scm_cons (scm_from_locale_string (name), SCM_EOL); + *tail = scm_cons (scm_from_ascii_string (name), SCM_EOL); tail = SCM_CDRLOC (*tail); } - + return retval; }