X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fpango-font.cc;h=a4fea75109bcb15141db97da016cd30d291375a2;hb=94ecf2d9c75797163920353c5199d02c43e0a4e6;hp=22dfb6b47fc4988e8e56e490fe23b47965a8b788;hpb=235a33ac0d166718d2a6f07069a6ffb2c5acaf34;p=lilypond.git diff --git a/lily/pango-font.cc b/lily/pango-font.cc index 22dfb6b47f..a4fea75109 100644 --- a/lily/pango-font.cc +++ b/lily/pango-font.cc @@ -1,52 +1,69 @@ /* - 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--2011 Han-Wen Nienhuys - (c) 2004--2005 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 + 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 . +*/ -#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 +#include + +#include +#include + +// Ugh. -#include "main.hh" -#include "lookup.hh" -#include "dimensions.hh" #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, - Direction dir, - PangoFontDescription *description, + PangoFontDescription const *description, Real output_scale) { physical_font_tab_ = scm_c_make_hash_table (11); - PangoDirection pango_dir = (dir == RIGHT) - ? PANGO_DIRECTION_LTR - : PANGO_DIRECTION_RTL; - context_ = - pango_ft2_get_context (PANGO_RESOLUTION, PANGO_RESOLUTION); + 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); - // context_ = pango_ft2_font_map_create_context (fontmap); - attribute_list_= pango_attr_list_new(); + attribute_list_ = pango_attr_list_new (); - - /* - urgh. I don't understand this. Why isn't this 1/(scale * - resolution * output_scale) + // 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); - --hwn - */ - 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); @@ -60,11 +77,14 @@ Pango_font::~Pango_font () } void -Pango_font::register_font_file (String filename, String ps_name) +Pango_font::register_font_file (string filename, + string ps_name, + int face_index) { scm_hash_set_x (physical_font_tab_, - scm_makfrom0str (ps_name.to_str0()), - scm_makfrom0str (filename.to_str0())); + ly_string2scm (ps_name), + scm_list_2 (ly_string2scm (filename), + scm_from_int (face_index))); } void @@ -73,77 +93,202 @@ Pango_font::derived_mark () const scm_gc_mark (physical_font_tab_); } +void +get_glyph_index_name (char *s, + FT_ULong code) +{ + sprintf (s, "glyphIndex%lX", code); +} + +void +get_unicode_name (char *s, + FT_ULong code) +{ + if (code > 0xFFFF) + sprintf (s, "u%lX", code); + else + sprintf (s, "uni%04lX", code); +} + Stencil -Pango_font::pango_item_string_stencil (PangoItem *item, String str, Real dx) const -{ +Pango_font::pango_item_string_stencil (PangoGlyphItem const *glyph_item) const +{ const int GLYPH_NAME_LEN = 256; char glyph_name[GLYPH_NAME_LEN]; - PangoAnalysis *pa = &(item->analysis); - PangoGlyphString *pgs = pango_glyph_string_new (); - pango_shape (str.to_str0 () + item->offset, - item->length, pa, pgs); + 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 = G_TYPE_CHECK_INSTANCE_CAST(pa->font, - PANGO_TYPE_FC_FONT, - PangoFcFont); - + + PangoFcFont *fcfont = PANGO_FC_FONT (pa->font); + FT_Face ftface = pango_fc_font_lock_face (fcfont); - Box b (Interval (PANGO_LBEARING(ink_rect), - PANGO_RBEARING(ink_rect)), - Interval (-PANGO_DESCENT(ink_rect), - PANGO_ASCENT(ink_rect))); - + + Box b (Interval (PANGO_LBEARING (logical_rect), + PANGO_RBEARING (logical_rect)), + Interval (-PANGO_DESCENT (ink_rect), + PANGO_ASCENT (ink_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; - + 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_ + dx), - scm_from_double (ggeo.y_offset * scale_), - scm_makfrom0str (glyph_name)), + /* + Zero-width characters are valid Unicode characters, + but glyph lookups need to be skipped. + */ + if (!(pg ^ PANGO_GLYPH_EMPTY)) + continue; + + glyph_name[0] = '\0'; + if (has_glyph_names) + { + FT_Error 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 ())); + } + + SCM char_id = SCM_EOL; + if (glyph_name[0] == '\0' + && cmap + && is_ttf + && cmap->find (pg) != cmap->end ()) + { + FT_ULong char_code = cmap->find (pg)->second; + get_unicode_name (glyph_name, char_code); + } + + 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'; + + if (glyph_name[0] == '\0' && is_ttf) + // Access by glyph index directly. + get_glyph_index_name (glyph_name, pg); + + if (glyph_name[0] == '\0') + { + // 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); - dx = 0.0; tail = SCM_CDRLOC (*tail); } + 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)); - - FcPattern *fcpat = fcfont->font_pattern; - char *filename = 0; - FcPatternGetString(fcpat, FC_FILE, 0, (FcChar8 **) &filename); - char const *ps_name = FT_Get_Postscript_Name (ftface); + / (Real (PANGO_SCALE)); + + if (!ps_name_str0) + warning (_f ("no PostScript font name for font `%s'", file_name)); - if (ps_name) + string ps_name; + if (!ps_name_str0 + && file_name != "" + && (file_name.find (".otf") != NPOS + || file_name.find (".cff") != NPOS)) { - ((Pango_font *) this)->register_font_file (filename, ps_name); + // 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"); + + name = name.substr (0, idx); + + 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); - - SCM expr = scm_list_4 (ly_symbol2scm ("glyph-string"), - scm_makfrom0str (ps_name), + + 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); } - else - { - warning (_ ("FreeType face has no PostScript font name.")); - return Stencil(); - } + + warning (_ ("FreeType face has no PostScript font name")); + return Stencil (); } SCM @@ -152,72 +297,107 @@ Pango_font::physical_font_tab () const return physical_font_tab_; } +extern bool music_strings_to_paths; Stencil - -Pango_font::text_stencil (String str) const +Pango_font::text_stencil (Output_def * /* state */, + string str, bool music_string) const { - GList *items = pango_itemize (context_, - str.to_str0 (), - 0, str.length (), attribute_list_, - NULL); - - GList *ptr = items; + /* + 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 x = 0.0; - while (ptr) - { - PangoItem *item = (PangoItem*) ptr->data; + Real last_x = 0.0; - Stencil item_stencil = pango_item_string_stencil (item, str, x); + 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); + + 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 - x = item_stencil.extent (X_AXIS)[RIGHT]; - - dest.add_stencil (item_stencil); - - ptr = ptr->next; + dest.add_stencil (item_stencil); + } } - /* - UGH. Should have flags per output format signifying supported - options. - */ - if (output_backend_global != "ps" - && output_backend_global != "eps") + 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")); /* - For Pango based backends, we take a shortcut. - */ - SCM exp - = scm_list_3 (ly_symbol2scm ("utf8-string"), - scm_makfrom0str (pango_font_description_to_string (pango_description_)), - scm_makfrom0str (str.to_str0 ())); + 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); } - -#if 0 - // check extents. - if (!dest.extent_box ()[X_AXIS].is_empty ()) - { - Stencil frame = Lookup::frame (dest.extent_box(), 0.1, 0.1); - dest.add_stencil (frame); - } -#endif return dest; } +string +Pango_font::description_string () const +{ + char *descr_string = pango_font_description_to_string (pango_description_); + string s (descr_string); + g_free (descr_string); + return s; +} -SCM +SCM Pango_font::font_file_name () const { return SCM_BOOL_F; } - -#endif - +#endif // HAVE_PANGO_FT2