The Tor Browser: comparison gfx/graphite2/src/gr

--1:000000000000
+:fd232d710f77
+/*  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/CachedFace.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);
+if (silf)   options &= ~gr_face_dumbRendering;
+else if (!(options &  gr_face_dumbRendering))
+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 options & gr_face_dumbRendering;
+}
+}
+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<gr_face *>(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);
+}
+#ifndef GRAPHITE2_NSEGCACHE
+gr_face* gr_make_face_with_seg_cache_and_ops(const void* appFaceHandle/*non-NULL*/, const gr_face_ops *ops, unsigned int cacheSize, unsigned int faceOptions)
+//the appFaceHandle must stay alive all the time when the GrFace is alive. When finished with the GrFace, call destroy_face
+{
+if (ops == 0)   return 0;
+CachedFace *res = new CachedFace(appFaceHandle, *ops);
+if (res && load_face(*res, faceOptions)
+&& res->setupCache(cacheSize))
+return static_cast<gr_face *>(static_cast<Face *>(res));
+delete res;
+return 0;
+}
+gr_face* gr_make_face_with_seg_cache(const void* appFaceHandle/*non-NULL*/, gr_get_table_fn getTable, unsigned int cacheSize, unsigned int faceOptions)
+{
+const gr_face_ops ops = {sizeof(gr_face_ops), getTable, NULL};
+return gr_make_face_with_seg_cache_and_ops(appFaceHandle, &ops, cacheSize, faceOptions);
+}
+#endif
+gr_uint32 gr_str_to_tag(const char *str)
+{
+uint32 res = 0;
+int i = strlen(str);
+if (i > 4) i = 4;
+while (--i >= 0)
+res = (res >> 8) + (str[i] << 24);
+return res;
+}
+void gr_tag_to_str(gr_uint32 tag, char *str)
+{
+int i = 4;
+while (--i >= 0)
+{
+str[i] = tag & 0xFF;
+tag >>= 8;
+}
+}
+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;
+}
+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<gr_feature_val *>(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<const gr_feature_ref*>(pRef);
+}
+unsigned short gr_face_n_fref(const gr_face* pFace)
+{
+assert(pFace);
+return pFace->numFeatures();
+}
+const gr_feature_ref* gr_face_fref(const gr_face* pFace, gr_uint16 i) //When finished with the FeatureRef, call destroy_FeatureRef
+{
+assert(pFace);
+const FeatureRef* pRef = pFace->feature(i);
+return static_cast<const gr_feature_ref*>(pRef);
+}
+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 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;
+}
+#ifndef GRAPHITE2_NSEGCACHE
+gr_face* gr_make_file_face_with_seg_cache(const char* filename, unsigned int segCacheMaxSize, unsigned int faceOptions)   //returns NULL on failure. //TBD better error handling
+//when finished with, call destroy_face
+{
+FileFace* pFileFace = new FileFace(filename);
+if (*pFileFace)
+{
+gr_face * pRes = gr_make_face_with_seg_cache_and_ops(pFileFace, &FileFace::ops, segCacheMaxSize, faceOptions);
+if (pRes)
+{
+pRes->takeFileFace(pFileFace);        //takes ownership
+return pRes;
+}
+}
+//error when loading
+delete pFileFace;
+return NULL;
+}
+#endif
+#endif      //!GRAPHITE2_NFILEFACE
+} // extern "C"

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comparison: gfx/graphite2/src/gr_face.cpp

gfx/graphite2/src/gr_face.cpp