X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fopen-type-font.cc;h=3d007be81130ea1bf76063ab9da61252931bcf77;hb=840936be1b28526ef292b5dae8ae031b4fa587f9;hp=c09e60ba8fbf7d3d355380d37e15ce4751dfa691;hpb=076884bc0f9ee5e10fa4e8d29e09aeed85b0c0c6;p=lilypond.git diff --git a/lily/open-type-font.cc b/lily/open-type-font.cc index c09e60ba8f..3d007be811 100644 --- a/lily/open-type-font.cc +++ b/lily/open-type-font.cc @@ -1,91 +1,133 @@ /* - open-type-font.cc -- implement Open_type_font + open-type-font.cc -- implement Open_type_font source file of the GNU LilyPond music typesetter - (c) 2004 Han-Wen Nienhuys - + (c) 2004--2009 Han-Wen Nienhuys */ -#include +#include "open-type-font.hh" + +#include + +using namespace std; #include - -#include "warn.hh" -#include "open-type-font.hh" + #include "dimensions.hh" +#include "international.hh" +#include "modified-font-metric.hh" +#include "warn.hh" FT_Byte * load_table (char const *tag_str, FT_Face face, FT_ULong *length) { - FT_ULong tag = FT_MAKE_TAG(tag_str[0], tag_str[1], tag_str[2], tag_str[3]); - + *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); if (!error_code) { - FT_Byte*buffer = (FT_Byte*) malloc (*length); + FT_Byte *buffer = (FT_Byte *) malloc (*length); if (buffer == NULL) - error ("Not enough memory"); + error (_f ("cannot allocate %lu bytes", *length)); - error_code = FT_Load_Sfnt_Table (face, tag, 0, buffer, length ); + error_code = FT_Load_Sfnt_Table (face, tag, 0, buffer, length); if (error_code) - { - error (_f ("Could not load %s font table", tag_str)); - } + error (_f ("cannot load font table: %s", tag_str)); return buffer; } - - return 0 ; + else + programming_error (_f ("Free type error: %s", + freetype_error_string (error_code).c_str () + )); + + return 0; +} + +string +Open_type_font::get_otf_table (string tag) const +{ + return ::get_otf_table (face_, tag); } SCM load_scheme_table (char const *tag_str, FT_Face face) { FT_ULong length = 0; - FT_Byte* buffer =load_table (tag_str, face, &length); + FT_Byte *buffer = load_table (tag_str, face, &length); SCM tab = SCM_EOL; if (buffer) { - String contents ((Byte const*)buffer, length); - contents = "(quote (" + contents + "))"; + string contents ((char const*)buffer, length); + contents = "(quote (" + contents + "))"; - SCM alist = scm_c_eval_string (contents.to_str0()); - tab = alist_to_hashq (alist); + tab = scm_c_eval_string (contents.c_str ()); free (buffer); } return tab; } - -SCM -Open_type_font::make_otf (String str) + + +Open_type_font::~Open_type_font () { - Open_type_font * otf = new Open_type_font; - int error_code = FT_New_Face(freetype2_library, str.to_str0(), - 0, &(otf->face_)); - + FT_Done_Face (face_); +} + +/* + UGH fix naming +*/ +string +get_otf_table (FT_Face face, string tag) +{ + FT_ULong len; + FT_Byte *tab = load_table (tag.c_str (), face, &len); + string ret ((char const*) tab, len); + free (tab); + + return ret; +} + +FT_Face +open_ft_face (string str, FT_Long idx) +{ + FT_Face face; + int error_code = FT_New_Face (freetype2_library, str.c_str (), idx, &face); + if (error_code == FT_Err_Unknown_File_Format) - { - error("Unsupported font format"); - } + error (_f ("unsupported font format: %s", str.c_str ())); else if (error_code) - { - error ("Unknown error reading font file."); - } - + error (_f ("error reading font file %s: %s", + str.c_str (), + freetype_error_string (error_code).c_str ())); + return face; +} +SCM +Open_type_font::make_otf (string str) +{ + FT_Face face = open_ft_face (str, 0 /* index */); + Open_type_font *otf = new Open_type_font (face); - otf->lily_character_table_ = load_scheme_table ("LILC", otf->face_); - otf->lily_global_table_ = load_scheme_table ("LILY", otf->face_); - return otf->self_scm (); } -Open_type_font::Open_type_font() +Open_type_font::Open_type_font (FT_Face face) { + face_ = face; lily_character_table_ = SCM_EOL; lily_global_table_ = SCM_EOL; + lily_subfonts_ = SCM_EOL; + lily_index_to_bbox_table_ = SCM_EOL; + + lily_character_table_ = alist_to_hashq (load_scheme_table ("LILC", face_)); + lily_global_table_ = alist_to_hashq (load_scheme_table ("LILY", face_)); + lily_subfonts_ = load_scheme_table ("LILF", face_); + index_to_charcode_map_ = make_index_to_charcode_map (face_); + + lily_index_to_bbox_table_ = scm_c_make_hash_table (257); } void @@ -93,35 +135,73 @@ Open_type_font::derived_mark () const { scm_gc_mark (lily_character_table_); scm_gc_mark (lily_global_table_); + scm_gc_mark (lily_subfonts_); + scm_gc_mark (lily_index_to_bbox_table_); } Offset -Open_type_font::attachment_point (String glyph_name) const +Open_type_font::attachment_point (string glyph_name) const { - SCM sym = ly_symbol2scm (glyph_name.to_str0 ()); + 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 (entry == SCM_BOOL_F) return o; SCM char_alist = entry; + SCM att_scm = scm_cdr (scm_assq (ly_symbol2scm ("attachment"), char_alist)); - SCM att_scm =scm_cdr (scm_assq (char_alist, ly_symbol2scm ("attachment"))); - - return ly_scm2offset (att_scm); + return point_constant * ly_scm2offset (att_scm); } - -Open_type_font::~Open_type_font() +Box +Open_type_font::get_indexed_char (size_t signed_idx) const { - FT_Done_Face (face_); -} + 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); + if (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); + if (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; + } + } -Box -Open_type_font::get_indexed_char (int signed_idx) const -{ FT_UInt idx = signed_idx; FT_Load_Glyph (face_, idx, @@ -133,28 +213,97 @@ Open_type_font::get_indexed_char (int signed_idx) const Box b (Interval (-hb, m.width - hb), Interval (-vb, m.height - vb)); - Real point_constant = 1 PT; - - - b.scale (design_size() * Real (point_constant) / face_->units_per_EM); + b.scale (design_size () / Real (face_->units_per_EM)); return b; } -int -Open_type_font::name_to_index (String nm) const +size_t +Open_type_font::name_to_index (string nm) const { - char * nm_str = (char * )nm.to_str0 (); - int idx = FT_Get_Name_Index (face_, nm_str); - - if (idx == 0) - return -1; - else + char *nm_str = (char *) nm.c_str (); + if (size_t idx = FT_Get_Name_Index (face_, nm_str)) return idx; + + return (size_t) -1; } +size_t +Open_type_font::index_to_charcode (size_t i) const +{ + return ((Open_type_font *) this)->index_to_charcode_map_[i]; +} + +size_t +Open_type_font::count () const +{ + return ((Open_type_font *) this)->index_to_charcode_map_.size (); +} Real Open_type_font::design_size () const { - return scm_to_double (scm_hashq_ref (lily_global_table_, ly_symbol2scm ("staffsize"), SCM_BOOL_F)); + 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)); + return scm_to_double (entry) * Real (point_constant); +} + +SCM +Open_type_font::sub_fonts () const +{ + return lily_subfonts_; +} + +SCM +Open_type_font::get_char_table () const +{ + return lily_character_table_; +} + +SCM +Open_type_font::get_subfonts () const +{ + return lily_subfonts_; +} + +SCM +Open_type_font::get_global_table () const +{ + return lily_global_table_; +} + +string +Open_type_font::font_name () const +{ + return FT_Get_Postscript_Name (face_); +} + + +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); + if (code) + 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_CDRLOC (*tail); + } + + return retval; }