/*
- open-type-font.cc -- implement Open_type_font
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond 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 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#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 <cstdio>
using namespace std;
-#include <freetype/tttables.h>
+#include FT_TRUETYPE_TABLES_H
#include "dimensions.hh"
#include "international.hh"
*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);
}
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_);
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)
+open_ft_face (const string &str, FT_Long idx)
{
FT_Face face;
- int error_code = FT_New_Face (freetype2_library, str.c_str (), 0, &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<string>(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<const FT_Byte*>
+ (static_cast<const void*>(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<unsigned char>(cff_table.at(2));
+ string::iterator it = cff_table.begin () + hdrsize;
+
+ unsigned int name_index_count;
+ name_index_count = static_cast<unsigned char>(*it++) << 8;
+ name_index_count |= static_cast<unsigned char>(*it++);
+
+ size_t offsize = static_cast<unsigned char>(*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<unsigned char>(*it++);
+ if (off1)
+ {
+ for (size_t t = 0; t < offsize; t++)
+ off2 = ( off2 << 8 ) | static_cast<unsigned char>(*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);
+ FT_Face face = open_ft_face (str, 0 /* index */);
Open_type_font *otf = new Open_type_font (face);
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_));
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
}
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;
}
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> (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<FT_UInt, FT_ULong>::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);
}
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;
}
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