/*
- pango-font.cc -- implement Pango_font
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2004--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2004 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/>.
+*/
-#define PANGO_ENABLE_BACKEND // ugh, why necessary?
+// Necessary for supporting pango_context_new() and
+// pango_context_set_font_map() in Pango < 1.22
+#define PANGO_ENABLE_BACKEND
#include <pango/pangoft2.h>
+#include <freetype/ftxf86.h>
+
+#include <map>
+#include <cstdio>
+
+// Ugh.
#include "pango-font.hh"
+#include "dimensions.hh"
+#include "file-name.hh"
+#include "international.hh"
+#include "lookup.hh" // debugging
+#include "main.hh"
+#include "string-convert.hh"
+#include "warn.hh"
+#include "all-font-metrics.hh"
+#include "program-option.hh"
#if HAVE_PANGO_FT2
-#include "stencil.hh"
-
+#include "stencil.hh"
Pango_font::Pango_font (PangoFT2FontMap *fontmap,
- int resolution,
- Direction dir,
- PangoFontDescription *description)
+ PangoFontDescription const *description,
+ Real output_scale)
{
- subfonts_ = SCM_EOL;
- PangoDirection pango_dir = (dir == RIGHT)
- ? PANGO_DIRECTION_LTR
- : PANGO_DIRECTION_RTL;
- context_ = pango_ft2_font_map_create_context (fontmap);
- attribute_list_= pango_attr_list_new();
- scale_ = 1.0 / (PANGO_SCALE * resolution * 72.27);
-
+ physical_font_tab_ = scm_c_make_hash_table (11);
+ PangoDirection pango_dir = PANGO_DIRECTION_LTR;
+ context_ = pango_context_new ();
+ pango_context_set_font_map (context_, PANGO_FONT_MAP (fontmap));
+
+ pango_description_ = pango_font_description_copy (description);
+ attribute_list_ = pango_attr_list_new ();
+
+ // urgh. I don't understand this. Why isn't this 1/(scale *
+ // resolution * output_scale)
+ //
+ // --hwn
+ output_scale_ = output_scale;
+ scale_ = INCH_TO_BP
+ / (Real (PANGO_SCALE) * Real (PANGO_RESOLUTION) * output_scale);
+
+ // ugh. Should make this configurable.
pango_context_set_language (context_, pango_language_from_string ("en_US"));
pango_context_set_base_dir (context_, pango_dir);
pango_context_set_font_description (context_, description);
Pango_font::~Pango_font ()
{
+ pango_font_description_free (pango_description_);
g_object_unref (context_);
pango_attr_list_unref (attribute_list_);
}
void
-Pango_font::register_font_file (String filename, String ps_name)
+Pango_font::register_font_file (string filename,
+ string ps_name,
+ int face_index)
{
- subfonts_ = scm_cons (//scm_cons (scm_makfrom0str (ps_name.to_str0 ()),
- scm_makfrom0str (filename.to_str0 ()),
- subfonts_);
+ scm_hash_set_x (physical_font_tab_,
+ ly_string2scm (ps_name),
+ scm_list_2 (ly_string2scm (filename),
+ scm_from_int (face_index)));
}
void
Pango_font::derived_mark () const
{
- scm_gc_mark (subfonts_);
+ scm_gc_mark (physical_font_tab_);
}
-Stencil
-Pango_font::text_stencil (String str) const
+void
+get_glyph_index_name (char *s,
+ FT_ULong code)
+{
+ sprintf (s, "glyphIndex%lX", code);
+}
+
+void
+get_unicode_name (char *s,
+ FT_ULong code)
{
- GList *items = pango_itemize (context_,
- str.to_str0 (),
- 0, str.length (), attribute_list_,
- NULL);
+ if (code > 0xFFFF)
+ sprintf (s, "u%lX", code);
+ else
+ sprintf (s, "uni%04lX", code);
+}
+Stencil
+Pango_font::pango_item_string_stencil (PangoGlyphItem const *glyph_item,
+ bool tight_bbox) const
+{
const int GLYPH_NAME_LEN = 256;
char glyph_name[GLYPH_NAME_LEN];
-
- GList *ptr = items;
- Stencil dest;
- while (ptr)
+
+ PangoAnalysis const *pa = &(glyph_item->item->analysis);
+ PangoGlyphString *pgs = glyph_item->glyphs;
+
+ PangoRectangle logical_rect;
+ PangoRectangle ink_rect;
+ pango_glyph_string_extents (pgs, pa->font, &ink_rect, &logical_rect);
+
+ PangoFcFont *fcfont = PANGO_FC_FONT (pa->font);
+
+ FT_Face ftface = pango_fc_font_lock_face (fcfont);
+
+ PangoRectangle const *which_rect = tight_bbox ? &ink_rect
+ : &logical_rect;
+
+ Box b (Interval (PANGO_LBEARING (logical_rect),
+ PANGO_RBEARING (logical_rect)),
+ Interval (-PANGO_DESCENT (*which_rect),
+ PANGO_ASCENT (*which_rect)));
+ b.scale (scale_);
+
+ char const *ps_name_str0 = FT_Get_Postscript_Name (ftface);
+ FcPattern *fcpat = fcfont->font_pattern;
+
+ FcChar8 *file_name_as_ptr = 0;
+ FcPatternGetString (fcpat, FC_FILE, 0, &file_name_as_ptr);
+
+ // due to a bug in FreeType 2.3.7 and earlier we can't use
+ // ftface->face_index; it is always zero for some font formats,
+ // in particular TTCs which we are interested in
+ int face_index = 0;
+ FcPatternGetInteger (fcpat, FC_INDEX, 0, &face_index);
+
+ string file_name;
+ if (file_name_as_ptr)
+ // Normalize file name.
+ file_name = File_name ((char const *)file_name_as_ptr).to_string ();
+
+ SCM glyph_exprs = SCM_EOL;
+ SCM *tail = &glyph_exprs;
+
+ Index_to_charcode_map const *cmap = 0;
+ bool has_glyph_names = ftface->face_flags & FT_FACE_FLAG_GLYPH_NAMES;
+ if (!has_glyph_names)
+ cmap = all_fonts_global->get_index_to_charcode_map (
+ file_name, face_index, ftface);
+
+ bool is_ttf = string (FT_Get_X11_Font_Format (ftface)) == "TrueType";
+ bool cid_keyed = false;
+
+ for (int i = 0; i < pgs->num_glyphs; i++)
{
+ PangoGlyphInfo *pgi = pgs->glyphs + i;
- // FIXME: factor this out
- PangoItem *item = (PangoItem*) ptr->data;
- PangoAnalysis *pa = &(item->analysis);
- PangoGlyphString *pgs = pango_glyph_string_new ();
+ PangoGlyph pg = pgi->glyph;
+ PangoGlyphGeometry ggeo = pgi->geometry;
- pango_shape (str.to_str0 (), str.length (), pa, pgs);
+ /*
+ Zero-width characters are valid Unicode characters,
+ but glyph lookups need to be skipped.
+ */
+ if (!(pg ^ PANGO_GLYPH_EMPTY))
+ continue;
- PangoRectangle logical_rect;
- pango_glyph_string_extents (pgs, pa->font, NULL, &logical_rect);
-
- PangoFcFont *fcfont = G_TYPE_CHECK_INSTANCE_CAST(pa->font,
- PANGO_TYPE_FC_FONT,
- PangoFcFont);
- FT_Face ftface = pango_fc_font_lock_face (fcfont);
- Box b (Interval (0, logical_rect.width),
- Interval (0, logical_rect.height));
+ glyph_name[0] = '\0';
+ if (has_glyph_names)
+ {
+ int errorcode = FT_Get_Glyph_Name (ftface, pg, glyph_name,
+ GLYPH_NAME_LEN);
+ if (errorcode)
+ programming_error (
+ _f ("FT_Get_Glyph_Name () error: %s",
+ freetype_error_string (errorcode).c_str ()));
+ }
- if (!face_)
+ SCM char_id = SCM_EOL;
+ if (glyph_name[0] == '\0'
+ && cmap
+ && is_ttf
+ && cmap->find (pg) != cmap->end ())
{
- /* FIXME. This obvious shortcut apparently does not work.
- It seems there are different faces per text string and a
- map of face_ and charcode mapping is needed. */
- Pango_font *barf = (Pango_font*) this;
- barf->face_ = ftface;
- barf->index_to_charcode_map_ = make_index_to_charcode_map (face_);
+ FT_ULong char_code = cmap->find (pg)->second;
+ get_unicode_name (glyph_name, char_code);
}
- b.translate (Offset (- logical_rect.x, -logical_rect.y));
-
- b.scale (scale_);
+ if (glyph_name[0] == '\0' && has_glyph_names)
+ {
+ programming_error (
+ _f ("Glyph has no name, but font supports glyph naming.\n"
+ "Skipping glyph U+%0X, file %s",
+ pg, file_name.c_str ()));
+ continue;
+ }
+
+ if (glyph_name == string (".notdef") && is_ttf)
+ glyph_name[0] = '\0';
- SCM glyph_exprs = SCM_EOL;
- SCM *tail = &glyph_exprs;
- for (int i = 0; i < pgs->num_glyphs; i++)
+ if (glyph_name[0] == '\0' && is_ttf)
+ // Access by glyph index directly.
+ get_glyph_index_name (glyph_name, pg);
+
+ if (glyph_name[0] == '\0')
{
- PangoGlyphInfo *pgi = pgs->glyphs + i;
-
- PangoGlyph pg = pgi->glyph;
- PangoGlyphGeometry ggeo = pgi->geometry;
-
- FT_Get_Glyph_Name (ftface, pg, glyph_name, GLYPH_NAME_LEN);
- *tail = scm_cons (scm_list_3 (scm_from_double (ggeo.x_offset * scale_),
- scm_from_double (ggeo.y_offset * scale_),
- scm_makfrom0str (glyph_name)),
- SCM_EOL);
- tail = SCM_CDRLOC (*tail);
+ // CID entry
+ cid_keyed = true;
+ char_id = scm_from_uint32 (pg);
}
+ else
+ char_id = scm_from_locale_string (glyph_name);
+
+ *tail = scm_cons (scm_list_4 (scm_from_double (ggeo.width * scale_),
+ scm_from_double (ggeo.x_offset * scale_),
+ scm_from_double (ggeo.y_offset * scale_),
+ char_id),
+ SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ }
- FcPattern *fcpat = fcfont->font_pattern;
- char *filename = 0;
- FcPatternGetString(fcpat, FC_FILE, 0, (FcChar8 **) &filename);
- char const *ps_name = FT_Get_Postscript_Name (ftface);
- ((Pango_font *) this)->register_font_file (filename, ps_name);
-
- SCM expr = scm_list_4 (ly_symbol2scm ("glyph-string"),
- self_scm (),
- scm_makfrom0str (ps_name),
- ly_quote_scm (glyph_exprs));
+ pango_glyph_string_free (pgs);
+ pgs = 0;
+ PangoFontDescription *descr = pango_font_describe (pa->font);
+ Real size = pango_font_description_get_size (descr)
+ / (Real (PANGO_SCALE));
+
+ if (!ps_name_str0)
+ warning (_f ("no PostScript font name for font `%s'", file_name));
+
+ string ps_name;
+ if (!ps_name_str0
+ && file_name != ""
+ && (file_name.find (".otf") != NPOS
+ || file_name.find (".cff") != NPOS))
+ {
+ // UGH: kludge a PS name for OTF/CFF fonts.
+ string name = file_name;
+ ssize idx = file_name.find (".otf");
+ if (idx == NPOS)
+ idx = file_name.find (".cff");
- Stencil item_stencil (b, expr);
+ name = name.substr (0, idx);
- dest.add_stencil (item_stencil);
-
+ ssize slash_idx = name.rfind ('/');
+ if (slash_idx != NPOS)
+ {
+ slash_idx ++;
+ name = name.substr (slash_idx,
+ name.length () - slash_idx);
+ }
+
+ string initial = name.substr (0, 1);
+ initial = String_convert::to_upper (initial);
+ name = name.substr (1, name.length () - 1);
+ name = String_convert::to_lower (name);
+ ps_name = initial + name;
+ }
+ else if (ps_name_str0)
+ ps_name = ps_name_str0;
+
+ if (ps_name.length ())
+ {
+ ((Pango_font *) this)->register_font_file (file_name,
+ ps_name,
+ face_index);
pango_fc_font_unlock_face (fcfont);
- ptr = ptr->next;
+
+ SCM expr = scm_list_5 (ly_symbol2scm ("glyph-string"),
+ ly_string2scm (ps_name),
+ scm_from_double (size),
+ scm_from_bool (cid_keyed),
+ ly_quote_scm (glyph_exprs));
+
+ return Stencil (b, expr);
}
- return dest;
+ warning (_ ("FreeType face has no PostScript font name"));
+ return Stencil ();
}
SCM
-Pango_font::sub_fonts () const
+Pango_font::physical_font_tab () const
{
- return subfonts_;
+ return physical_font_tab_;
}
-SCM
-Pango_font::font_file_name () const
+Stencil
+Pango_font::text_stencil (Output_def* state,
+ string str, bool music_string) const
{
- return SCM_BOOL_F;
+ return text_stencil (str, music_string, false);
}
-int
-Pango_font::name_to_index (String nm) const
+extern bool music_strings_to_paths;
+
+Stencil
+Pango_font::text_stencil (string str,
+ bool music_string,
+ bool tight) const
{
- char *nm_str = (char*) nm.to_str0 ();
- if (int idx = FT_Get_Name_Index (face_, nm_str))
- return idx;
- return -1;
+ /*
+ The text assigned to a PangoLayout is automatically divided
+ into sections and reordered according to the Unicode
+ Bidirectional Algorithm, if necessary.
+ */
+ PangoLayout *layout = pango_layout_new (context_);
+ pango_layout_set_text (layout, str.c_str (), -1);
+ GSList *lines = pango_layout_get_lines (layout);
+
+ Stencil dest;
+ Real last_x = 0.0;
+
+ for (GSList *l = lines; l; l = l->next)
+ {
+ PangoLayoutLine *line = (PangoLayoutLine *) l->data;
+ GSList *layout_runs = line->runs;
+
+ for (GSList *p = layout_runs; p; p = p->next)
+ {
+ PangoGlyphItem *item = (PangoGlyphItem *) p->data;
+ Stencil item_stencil = pango_item_string_stencil (item, tight);
+
+ item_stencil.translate_axis (last_x, X_AXIS);
+ last_x = item_stencil.extent (X_AXIS)[RIGHT];
+
+#if 0 // Check extents.
+ if (!item_stencil.extent_box ()[X_AXIS].is_empty ())
+ {
+ Stencil frame = Lookup::frame (item_stencil.extent_box (), 0.1, 0.1);
+ Box empty;
+ empty.set_empty ();
+ Stencil dimless_frame (empty, frame.expr ());
+ dest.add_stencil (frame);
+ }
+#endif
+
+ dest.add_stencil (item_stencil);
+ }
+ }
+
+ string name = get_output_backend_name ();
+ string output_mod = "scm output-" + name;
+ SCM mod = scm_c_resolve_module (output_mod.c_str ());
+
+ bool has_utf8_string = false;
+
+ if (ly_is_module (mod))
+ {
+ SCM utf8_string = ly_module_lookup (mod, ly_symbol2scm ("utf-8-string"));
+ /*
+ has_utf8_string should only be true when utf8_string is a
+ variable that is bound to a *named* procedure, i.e. not a
+ lambda expression.
+ */
+ if (utf8_string != SCM_BOOL_F
+ && scm_procedure_name (SCM_VARIABLE_REF (utf8_string)) != SCM_BOOL_F)
+ has_utf8_string = true;
+ }
+
+ bool to_paths = music_strings_to_paths;
+
+ /*
+ Backends with the utf-8-string expression use it when
+ 1) the -dmusic-strings-to-paths option is set
+ and `str' is not a music string, or
+ 2) the -dmusic-strings-to-paths option is not set.
+ */
+ if (has_utf8_string && ((to_paths && !music_string) || !to_paths))
+ {
+ // For Pango based backends, we take a shortcut.
+ SCM exp = scm_list_3 (ly_symbol2scm ("utf-8-string"),
+ ly_string2scm (description_string ()),
+ ly_string2scm (str));
+
+ Box b (Interval (0, 0), Interval (0, 0));
+ b.unite (dest.extent_box ());
+ return Stencil (b, exp);
+ }
+
+ return dest;
}
-unsigned
-Pango_font::index_to_charcode (int i) const
+string
+Pango_font::description_string () const
{
- return ((Pango_font*) this)->index_to_charcode_map_[i];
+ char *descr_string = pango_font_description_to_string (pango_description_);
+ string s (descr_string);
+ g_free (descr_string);
+ return s;
}
-LY_DEFINE (ly_pango_font_p, "ly:pango-font?",
- 1, 0, 0,
- (SCM f),
- "Is @var{f} a pango font?")
+SCM
+Pango_font::font_file_name () const
{
- return scm_from_bool (dynamic_cast<Pango_font*> (unsmob_metrics (f)));
+ return SCM_BOOL_F;
}
-
-#endif
-
+#endif // HAVE_PANGO_FT2
projects / lilypond.git / blobdiff