From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- gfx/graphite2/src/gr_face.cpp | 267 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 gfx/graphite2/src/gr_face.cpp (limited to 'gfx/graphite2/src/gr_face.cpp') diff --git a/gfx/graphite2/src/gr_face.cpp b/gfx/graphite2/src/gr_face.cpp new file mode 100644 index 0000000000..baa469727b --- /dev/null +++ b/gfx/graphite2/src/gr_face.cpp @@ -0,0 +1,267 @@ +/* GRAPHITE2 LICENSING + + Copyright 2010, SIL International + All rights reserved. + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of License, or + (at your option) any later version. + + This program 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 + Lesser General Public License for more details. + + You should also have received a copy of the GNU Lesser General Public + License along with this library in the file named "LICENSE". + If not, write to the Free Software Foundation, 51 Franklin Street, + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the + internet at http://www.fsf.org/licenses/lgpl.html. + +Alternatively, the contents of this file may be used under the terms of the +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public +License, as published by the Free Software Foundation, either version 2 +of the License or (at your option) any later version. +*/ +#include "graphite2/Font.h" +#include "inc/Face.h" +#include "inc/FileFace.h" +#include "inc/GlyphCache.h" +#include "inc/CmapCache.h" +#include "inc/Silf.h" +#include "inc/json.h" + +using namespace graphite2; + +#if !defined GRAPHITE2_NTRACING +extern json *global_log; +#endif + +namespace +{ + bool load_face(Face & face, unsigned int options) + { +#ifdef GRAPHITE2_TELEMETRY + telemetry::category _misc_cat(face.tele.misc); +#endif + Face::Table silf(face, Tag::Silf, 0x00050000); + if (!silf) + return false; + + if (!face.readGlyphs(options)) + return false; + + if (silf) + { + if (!face.readFeatures() || !face.readGraphite(silf)) + { +#if !defined GRAPHITE2_NTRACING + if (global_log) + { + *global_log << json::object + << "type" << "fontload" + << "failure" << face.error() + << "context" << face.error_context() + << json::close; + } +#endif + return false; + } + else + return true; + } + else + return false; + } + + inline + uint32 zeropad(const uint32 x) + { + if (x == 0x20202020) return 0; + if ((x & 0x00FFFFFF) == 0x00202020) return x & 0xFF000000; + if ((x & 0x0000FFFF) == 0x00002020) return x & 0xFFFF0000; + if ((x & 0x000000FF) == 0x00000020) return x & 0xFFFFFF00; + return x; + } +} + +extern "C" { + +gr_face* gr_make_face_with_ops(const void* appFaceHandle/*non-NULL*/, const gr_face_ops *ops, unsigned int faceOptions) + //the appFaceHandle must stay alive all the time when the gr_face is alive. When finished with the gr_face, call destroy_face +{ + if (ops == 0) return 0; + + Face *res = new Face(appFaceHandle, *ops); + if (res && load_face(*res, faceOptions)) + return static_cast(res); + + delete res; + return 0; +} + +gr_face* gr_make_face(const void* appFaceHandle/*non-NULL*/, gr_get_table_fn tablefn, unsigned int faceOptions) +{ + const gr_face_ops ops = {sizeof(gr_face_ops), tablefn, NULL}; + return gr_make_face_with_ops(appFaceHandle, &ops, faceOptions); +} + + +gr_face* gr_make_face_with_seg_cache_and_ops(const void* appFaceHandle/*non-NULL*/, const gr_face_ops *ops, unsigned int , unsigned int faceOptions) +{ + return gr_make_face_with_ops(appFaceHandle, ops, faceOptions); +} + +gr_face* gr_make_face_with_seg_cache(const void* appFaceHandle/*non-NULL*/, gr_get_table_fn tablefn, unsigned int, unsigned int faceOptions) +{ + const gr_face_ops ops = {sizeof(gr_face_ops), tablefn, NULL}; + return gr_make_face_with_ops(appFaceHandle, &ops, faceOptions); +} + +gr_uint32 gr_str_to_tag(const char *str) +{ + uint32 res = 0; + switch(max(strlen(str),size_t(4))) + { + case 4: res |= str[3]; GR_FALLTHROUGH; + case 3: res |= str[2] << 8; GR_FALLTHROUGH; + case 2: res |= str[1] << 16; GR_FALLTHROUGH; + case 1: res |= str[0] << 24; GR_FALLTHROUGH; + default: break; + } + return res; +} + +void gr_tag_to_str(gr_uint32 tag, char *str) +{ + if (!str) return; + + *str++ = char(tag >> 24); + *str++ = char(tag >> 16); + *str++ = char(tag >> 8); + *str++ = char(tag); + *str = '\0'; +} + +gr_feature_val* gr_face_featureval_for_lang(const gr_face* pFace, gr_uint32 langname/*0 means clone default*/) //clones the features. if none for language, clones the default +{ + assert(pFace); + langname = zeropad(langname); + return static_cast(pFace->theSill().cloneFeatures(langname)); +} + + +const gr_feature_ref* gr_face_find_fref(const gr_face* pFace, gr_uint32 featId) //When finished with the FeatureRef, call destroy_FeatureRef +{ + assert(pFace); + featId = zeropad(featId); + const FeatureRef* pRef = pFace->featureById(featId); + return static_cast(pRef); +} + +unsigned short gr_face_n_fref(const gr_face* pFace) +{ + assert(pFace); + int res = 0; + for (int i = 0; i < pFace->numFeatures(); ++i) + if (!(pFace->feature(i)->getFlags() & FeatureRef::HIDDEN)) + ++res; + return res; +} + +const gr_feature_ref* gr_face_fref(const gr_face* pFace, gr_uint16 i) //When finished with the FeatureRef, call destroy_FeatureRef +{ + assert(pFace); + int count = 0; + for (int j = 0; j < pFace->numFeatures(); ++j) + { + const FeatureRef* pRef = pFace->feature(j); + if (!(pRef->getFlags() & FeatureRef::HIDDEN)) + if (count++ == i) + return static_cast(pRef); + } + return 0; +} + +unsigned short gr_face_n_languages(const gr_face* pFace) +{ + assert(pFace); + return pFace->theSill().numLanguages(); +} + +gr_uint32 gr_face_lang_by_index(const gr_face* pFace, gr_uint16 i) +{ + assert(pFace); + return pFace->theSill().getLangName(i); +} + + +void gr_face_destroy(gr_face *face) +{ + delete static_cast(face); +} + + +gr_uint16 gr_face_name_lang_for_locale(gr_face *face, const char * locale) +{ + if (face) + { + return face->languageForLocale(locale); + } + return 0; +} + +unsigned short gr_face_n_glyphs(const gr_face* pFace) +{ + return pFace->glyphs().numGlyphs(); +} + +const gr_faceinfo *gr_face_info(const gr_face *pFace, gr_uint32 script) +{ + if (!pFace) return 0; + const Silf *silf = pFace->chooseSilf(script); + if (silf) return silf->silfInfo(); + return 0; +} + +int gr_face_is_char_supported(const gr_face* pFace, gr_uint32 usv, gr_uint32 script) +{ + const Cmap & cmap = pFace->cmap(); + gr_uint16 gid = cmap[usv]; + if (!gid) + { + const Silf * silf = pFace->chooseSilf(script); + gid = silf->findPseudo(usv); + } + return (gid != 0); +} + +#ifndef GRAPHITE2_NFILEFACE +gr_face* gr_make_file_face(const char *filename, unsigned int faceOptions) +{ + FileFace* pFileFace = new FileFace(filename); + if (*pFileFace) + { + gr_face* pRes = gr_make_face_with_ops(pFileFace, &FileFace::ops, faceOptions); + if (pRes) + { + pRes->takeFileFace(pFileFace); //takes ownership + return pRes; + } + } + + //error when loading + + delete pFileFace; + return NULL; +} + +gr_face* gr_make_file_face_with_seg_cache(const char* filename, unsigned int, unsigned int faceOptions) //returns NULL on failure. //TBD better error handling + //when finished with, call destroy_face +{ + return gr_make_file_face(filename, faceOptions); +} +#endif //!GRAPHITE2_NFILEFACE + +} // extern "C" -- cgit v1.2.3