X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fpango-font.cc;h=138fd5cb0001c68ee7694892ad6ffd3d514d7796;hb=8cf69a467ad7650f5ca9da6fe2dfd4c7c088b239;hp=ca08a4b0d23c8fc42357d77d38a3b57456d9406d;hpb=25190a4637753e6439c445d2d4fe9323b7945d32;p=lilypond.git diff --git a/lily/pango-font.cc b/lily/pango-font.cc index ca08a4b0d2..024d7b1d57 100644 --- a/lily/pango-font.cc +++ b/lily/pango-font.cc @@ -1,60 +1,77 @@ /* - 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--2015 Han-Wen Nienhuys - (c) 2004--2006 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 "freetype.hh" +#include FT_XFREE86_H #include +#include -/* Ugh. */ +// Ugh. #include "pango-font.hh" - -#include "open-type-font.hh" // Index_to_charcode_map - #include "dimensions.hh" #include "file-name.hh" #include "international.hh" -#include "lookup.hh" // debugging +#include "lookup.hh" // debugging +#include "ly-module.hh" #include "main.hh" #include "string-convert.hh" #include "warn.hh" +#include "all-font-metrics.hh" +#include "program-option.hh" +#include "open-type-font.hh" #if HAVE_PANGO_FT2 #include "stencil.hh" +Preinit_Pango_font::Preinit_Pango_font () +{ + physical_font_tab_ = SCM_EOL; +} + Pango_font::Pango_font (PangoFT2FontMap *fontmap, - PangoFontDescription *description, - Real output_scale) + PangoFontDescription const *description, + Real output_scale) { - (void) fontmap; physical_font_tab_ = scm_c_make_hash_table (11); PangoDirection pango_dir = PANGO_DIRECTION_LTR; - context_ - = pango_ft2_get_context (PANGO_RESOLUTION, PANGO_RESOLUTION); - // context_ = pango_ft2_font_map_create_context (fontmap); + 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 - */ + // 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); + scale_ = INCH_TO_BP + / (Real (PANGO_SCALE) * Real (PANGO_RESOLUTION) * output_scale); - /* - ugh. Should make this configurable. - */ + // 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); @@ -68,107 +85,151 @@ Pango_font::~Pango_font () } void -Pango_font::register_font_file (string filename, string ps_name) +Pango_font::register_font_file (const string &filename, + const string &ps_name, + int face_index) { scm_hash_set_x (physical_font_tab_, - scm_makfrom0str (ps_name.c_str ()), - scm_makfrom0str (filename.c_str ())); + ly_string2scm (ps_name), + scm_list_2 (ly_string2scm (filename), + scm_from_int (face_index))); } -void -Pango_font::derived_mark () const +size_t +Pango_font::name_to_index (string nm) const { - scm_gc_mark (physical_font_tab_); -} - - -map filename_charcode_maps_map; -Index_to_charcode_map const *get_index_to_charcode_map (string postscript_name, FT_Face face); + PangoFcFont *fcfont = PANGO_FC_FONT (pango_context_load_font (context_, pango_description_)); + FT_Face face = pango_fc_font_lock_face (fcfont); + char *nm_str = (char *) nm.c_str (); + if (FT_UInt idx = FT_Get_Name_Index (face, nm_str)) + { + pango_fc_font_unlock_face (fcfont); + return (size_t) idx; + } + pango_fc_font_unlock_face (fcfont); + return (size_t) - 1; +} -Index_to_charcode_map const * -get_index_to_charcode_map (string filename, FT_Face face) +void +Pango_font::derived_mark () const { - if (filename_charcode_maps_map.find (filename) == filename_charcode_maps_map.end ()) - filename_charcode_maps_map[filename] = make_index_to_charcode_map (face); - - if (filename_charcode_maps_map.find (filename) == filename_charcode_maps_map.end ()) - return 0; - - return &filename_charcode_maps_map[filename]; + scm_gc_mark (physical_font_tab_); } void -get_glyph_index_name (char *s, FT_ULong code) +get_glyph_index_name (char *s, + FT_ULong code) { sprintf (s, "glyphIndex%lX", code); } void -get_unicode_name (char*s, FT_ULong code) +get_unicode_name (char *s, + FT_ULong code) { if (code > 0xFFFF) - sprintf (s, "u%lX", code); + sprintf (s, "u%lX", code); else - sprintf (s, "uni%04lX", code); + sprintf (s, "uni%04lX", code); +} + +Box +Pango_font::get_unscaled_indexed_char_dimensions (size_t signed_idx) const +{ + PangoFcFont *fcfont = PANGO_FC_FONT (pango_context_load_font (context_, pango_description_)); + FT_Face face = pango_fc_font_lock_face (fcfont); + Box b = ly_FT_get_unscaled_indexed_char_dimensions (face, signed_idx); + pango_fc_font_unlock_face (fcfont); + return b; +} + +Box +Pango_font::get_scaled_indexed_char_dimensions (size_t signed_idx) const +{ + PangoFont *font = pango_context_load_font (context_, pango_description_); + PangoRectangle logical_rect; + PangoRectangle ink_rect; + pango_font_get_glyph_extents (font, signed_idx, &ink_rect, &logical_rect); + Box out (Interval (PANGO_LBEARING (ink_rect), + PANGO_RBEARING (ink_rect)), + Interval (-PANGO_DESCENT (ink_rect), + PANGO_ASCENT (ink_rect))); + out.scale (scale_); + return out; } +Box +Pango_font::get_glyph_outline_bbox (size_t signed_idx) const +{ + PangoFcFont *fcfont = PANGO_FC_FONT (pango_context_load_font (context_, pango_description_)); + FT_Face face = pango_fc_font_lock_face (fcfont); + Box b = ly_FT_get_glyph_outline_bbox (face, signed_idx); + pango_fc_font_unlock_face (fcfont); + return b; +} + +SCM +Pango_font::get_glyph_outline (size_t signed_idx) const +{ + PangoFcFont *fcfont = PANGO_FC_FONT (pango_context_load_font (context_, pango_description_)); + FT_Face face = pango_fc_font_lock_face (fcfont); + SCM s = ly_FT_get_glyph_outline (face, signed_idx); + pango_fc_font_unlock_face (fcfont); + return s; +} Stencil -Pango_font::pango_item_string_stencil (PangoItem const *item, string str, - bool tight_bbox) 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 const *pa = &(item->analysis); - PangoGlyphString *pgs = pango_glyph_string_new (); - pango_shape (str.c_str () + item->offset, - item->length, (PangoAnalysis*) 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); - 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))); + 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); + + const string ps_name_str0 = 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 (); - } - + // 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 = get_index_to_charcode_map (file_name, ftface); + 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; @@ -176,113 +237,138 @@ Pango_font::pango_item_string_stencil (PangoItem const *item, string str, PangoGlyph pg = pgi->glyph; PangoGlyphGeometry ggeo = pgi->geometry; + /* + Zero-width characters are valid Unicode characters, + but glyph lookups need to be skipped. + */ + if (!(pg ^ PANGO_GLYPH_EMPTY)) + continue; + + if (pg & PANGO_GLYPH_UNKNOWN_FLAG) + { + warning (_f ("no glyph for character U+%0X in font `%s'", + pg & ~PANGO_GLYPH_UNKNOWN_FLAG, file_name.c_str ())); + continue; + } + 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 ("FT_Get_Glyph_Name returns error"); - } + { + 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; - } - - + && 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'; - + glyph_name[0] = '\0'; + if (glyph_name[0] == '\0' && is_ttf) - { - // access by glyph index directly. - get_glyph_index_name (glyph_name, pg); - } - + // 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); - } + { + // CID entry + cid_keyed = true; + char_id = scm_from_uint32 (pg); + } else - char_id = scm_makfrom0str (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); + char_id = scm_from_utf8_string (glyph_name); + + PangoRectangle logical_sub_rect; + PangoRectangle ink_sub_rect; + + pango_glyph_string_extents_range (pgs, i, i + 1, pa->font, &ink_sub_rect, &logical_sub_rect); + Box b_sub (Interval (PANGO_LBEARING (logical_sub_rect), + PANGO_RBEARING (logical_sub_rect)), + Interval (-PANGO_DESCENT (ink_sub_rect), + PANGO_ASCENT (ink_sub_rect))); + + b_sub.scale (scale_); + + *tail = scm_cons (scm_list_5 (scm_from_double (b_sub[X_AXIS][RIGHT] - b_sub[X_AXIS][LEFT]), + scm_cons (scm_from_double (b_sub[Y_AXIS][DOWN]), + scm_from_double (b_sub[Y_AXIS][UP])), + scm_from_double (ggeo.x_offset * scale_), + scm_from_double (- ggeo.y_offset * scale_), + char_id), + SCM_EOL); tail = SCM_CDRLOC (*tail); } - + pango_fc_font_unlock_face (fcfont); + 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)); - + / (Real (PANGO_SCALE)); - if (!ps_name_str0) + if (ps_name_str0.empty ()) warning (_f ("no PostScript font name for font `%s'", file_name)); string ps_name; - if (!ps_name_str0 + if (ps_name_str0.empty () && file_name != "" && (file_name.find (".otf") != NPOS - || file_name.find (".cff") != NPOS)) + || file_name.find (".cff") != NPOS)) { - - /* UGH: kludge a PS name for OTF/CFF fonts. */ + // 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"); + 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); - } - + { + 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) + else if (!ps_name_str0.empty ()) ps_name = ps_name_str0; if (ps_name.length ()) { - ((Pango_font *) this)->register_font_file (file_name, ps_name); - pango_fc_font_unlock_face (fcfont); - - SCM expr = scm_list_5 (ly_symbol2scm ("glyph-string"), - scm_makfrom0str (ps_name.c_str ()), - scm_from_double (size), - scm_from_bool (cid_keyed), - ly_quote_scm (glyph_exprs)); + ((Pango_font *) this)->register_font_file (file_name, + ps_name, + face_index); + + SCM expr = scm_list_n (ly_symbol2scm ("glyph-string"), + self_scm (), + ly_string2scm (ps_name), + scm_from_double (size), + scm_from_bool (cid_keyed), + ly_quote_scm (glyph_exprs), + SCM_UNDEFINED); return Stencil (b, expr); } @@ -297,91 +383,103 @@ Pango_font::physical_font_tab () const return physical_font_tab_; } +extern bool music_strings_to_paths; Stencil -Pango_font::word_stencil (string str) const +Pango_font::text_stencil (Output_def * /* state */, + const string &str, + bool music_string, + const string &features_str) const { - return text_stencil (str, true); -} - -Stencil -Pango_font::text_stencil (string str) const -{ - return text_stencil (str, false); -} + /* + 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_); -Stencil -Pango_font::text_stencil (string str, bool tight) const -{ - GList *items - = pango_itemize (context_, - str.c_str (), - 0, str.length (), attribute_list_, - NULL); + if (!features_str.empty()) + { + PangoAttrList *list = pango_attr_list_new(); + PangoAttribute *features_attr = pango_attr_font_features_new(features_str.c_str()); + pango_attr_list_insert(list, features_attr); + pango_layout_set_attributes(layout, list); + pango_attr_list_unref(list); + } - Stencil dest; + pango_layout_set_text (layout, str.c_str (), -1); + GSList *lines = pango_layout_get_lines (layout); + Stencil dest; Real last_x = 0.0; - Direction text_dir = RIGHT; - for (GList *p = items; p; p = p->next) + for (GSList *l = lines; l; l = l->next) { - PangoItem *item = (PangoItem *) p->data; - if (item->analysis.level == PANGO_DIRECTION_RTL) - text_dir = LEFT; + 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 + + dest.add_stencil (item_stencil); + } } - - for (GList *ptr = items; ptr; ptr = ptr->next) + + 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)) { - PangoItem *item = (PangoItem *) ptr->data; - - Stencil item_stencil = pango_item_string_stencil (item, str, tight); - - if (text_dir == RIGHT) - { - item_stencil.translate_axis (last_x, X_AXIS); - last_x = item_stencil.extent (X_AXIS)[RIGHT]; - } - else if (text_dir == LEFT) - { - dest.translate_axis (item_stencil.extent (X_AXIS)[RIGHT], X_AXIS); - } - -#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); + 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 (scm_is_true (utf8_string) + && scm_is_true (scm_procedure_name (SCM_VARIABLE_REF (utf8_string)))) + has_utf8_string = true; } + bool to_paths = music_strings_to_paths; + /* - UGH. Should have flags per output format signifying supported - options. + 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 (output_backend_global != "ps" - && output_backend_global != "eps") + 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"), - scm_makfrom0str (description_string ().c_str ()), - scm_makfrom0str (str.c_str ())); + // 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; } @@ -394,11 +492,10 @@ Pango_font::description_string () const return s; } - SCM Pango_font::font_file_name () const { return SCM_BOOL_F; } -#endif +#endif // HAVE_PANGO_FT2