X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fpango-font.cc;h=024d7b1d576f94bd731f1186351c26832da2fafe;hb=8cf69a467ad7650f5ca9da6fe2dfd4c7c088b239;hp=f6456dd826a2a6e9280229e392aaadb34a4978d4;hpb=bb91de5b7f8c4f753452730101c2422946067cc3;p=lilypond.git diff --git a/lily/pango-font.cc b/lily/pango-font.cc index f6456dd826..024d7b1d57 100644 --- a/lily/pango-font.cc +++ b/lily/pango-font.cc @@ -1,14 +1,29 @@ /* - 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--2008 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 @@ -19,24 +34,31 @@ #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" -Pango_font::Pango_font (PangoFT2FontMap * /* fontmap */, - PangoFontDescription const *description, - Real output_scale) +Preinit_Pango_font::Preinit_Pango_font () +{ + physical_font_tab_ = SCM_EOL; +} + +Pango_font::Pango_font (PangoFT2FontMap *fontmap, + PangoFontDescription const *description, + Real output_scale) { 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_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 (); @@ -47,7 +69,7 @@ Pango_font::Pango_font (PangoFT2FontMap * /* fontmap */, // --hwn output_scale_ = output_scale; scale_ = INCH_TO_BP - / (Real (PANGO_SCALE) * Real (PANGO_RESOLUTION) * output_scale); + / (Real (PANGO_SCALE) * Real (PANGO_RESOLUTION) * output_scale); // ugh. Should make this configurable. pango_context_set_language (context_, pango_language_from_string ("en_US")); @@ -63,14 +85,30 @@ Pango_font::~Pango_font () } void -Pango_font::register_font_file (string filename, - string ps_name, - int face_index) +Pango_font::register_font_file (const string &filename, + const string &ps_name, + int face_index) { scm_hash_set_x (physical_font_tab_, - ly_string2scm (ps_name), - scm_list_2 (ly_string2scm (filename), - scm_from_int (face_index))); + ly_string2scm (ps_name), + scm_list_2 (ly_string2scm (filename), + scm_from_int (face_index))); +} + +size_t +Pango_font::name_to_index (string nm) const +{ + 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; } void @@ -81,14 +119,14 @@ Pango_font::derived_mark () const void get_glyph_index_name (char *s, - FT_ULong code) + FT_ULong code) { sprintf (s, "glyphIndex%lX", code); } void get_unicode_name (char *s, - FT_ULong code) + FT_ULong code) { if (code > 0xFFFF) sprintf (s, "u%lX", code); @@ -96,39 +134,75 @@ get_unicode_name (char *s, 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; @@ -151,8 +225,7 @@ Pango_font::pango_item_string_stencil (PangoItem const *item, 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); + 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; @@ -164,90 +237,115 @@ Pango_font::pango_item_string_stencil (PangoItem const *item, 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 ( - _f ("FT_Get_Glyph_Name () error: %s", - freetype_error_string (errorcode).c_str ())); - } + { + 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); - } + && 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; - } + { + 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_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); + 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. 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); @@ -255,21 +353,22 @@ Pango_font::pango_item_string_stencil (PangoItem const *item, 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, - face_index); - pango_fc_font_unlock_face (fcfont); + ps_name, + face_index); - 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)); + 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); } @@ -284,85 +383,103 @@ Pango_font::physical_font_tab () const return physical_font_tab_; } -Stencil -Pango_font::word_stencil (string str) const -{ - return text_stencil (str, true); -} +extern bool music_strings_to_paths; Stencil -Pango_font::text_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, 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_); + + 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 -Pango_font::text_stencil (string str, - bool tight) const -{ - GList *items - = pango_itemize (context_, - str.c_str (), - 0, str.length (), attribute_list_, - NULL); + 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) - { - PangoItem *item = (PangoItem *) p->data; - if (item->analysis.level == PANGO_DIRECTION_RTL) - text_dir = LEFT; - } - - for (GList *ptr = items; ptr; ptr = ptr->next) + for (GSList *l = lines; l; l = l->next) { - PangoItem *item = (PangoItem *) ptr->data; + PangoLayoutLine *line = (PangoLayoutLine *) l->data; + GSList *layout_runs = line->runs; - Stencil item_stencil = pango_item_string_stencil (item, str, tight); + for (GSList *p = layout_runs; p; p = p->next) + { + PangoGlyphItem *item = (PangoGlyphItem *) p->data; + Stencil item_stencil = pango_item_string_stencil (item); - 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); + 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); - } + 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); + dest.add_stencil (item_stencil); + } } - // UGH. Should have flags per output format signifying supported - // options. string name = get_output_backend_name (); - if (name != "ps" && name != "eps") + 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 (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; + + /* + 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)); + ly_string2scm (description_string ()), + ly_string2scm (str)); Box b (Interval (0, 0), Interval (0, 0)); b.unite (dest.extent_box ()); return Stencil (b, exp); } - g_list_free (items); - return dest; }