DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (31ec81b5d7bb)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258
/*  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"

using namespace graphite2;

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;

        return silf ? face.readFeatures() && face.readGraphite(silf)
                    : 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);
    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);
    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"