michael@0: /*  GRAPHITE2 LICENSING
michael@0: 
michael@0:     Copyright 2010, SIL International
michael@0:     All rights reserved.
michael@0: 
michael@0:     This library is free software; you can redistribute it and/or modify
michael@0:     it under the terms of the GNU Lesser General Public License as published
michael@0:     by the Free Software Foundation; either version 2.1 of License, or
michael@0:     (at your option) any later version.
michael@0: 
michael@0:     This program is distributed in the hope that it will be useful,
michael@0:     but WITHOUT ANY WARRANTY; without even the implied warranty of
michael@0:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
michael@0:     Lesser General Public License for more details.
michael@0: 
michael@0:     You should also have received a copy of the GNU Lesser General Public
michael@0:     License along with this library in the file named "LICENSE".
michael@0:     If not, write to the Free Software Foundation, 51 Franklin Street, 
michael@0:     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the 
michael@0:     internet at http://www.fsf.org/licenses/lgpl.html.
michael@0: 
michael@0: Alternatively, the contents of this file may be used under the terms of the
michael@0: Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
michael@0: License, as published by the Free Software Foundation, either version 2
michael@0: of the License or (at your option) any later version.
michael@0: */
michael@0: #include "graphite2/Font.h"
michael@0: #include "inc/Face.h"
michael@0: #include "inc/FeatureMap.h"
michael@0: #include "inc/FeatureVal.h"
michael@0: #include "inc/NameTable.h"
michael@0: 
michael@0: using namespace graphite2;
michael@0: 
michael@0: extern "C" {
michael@0: 
michael@0: 
michael@0: gr_uint16 gr_fref_feature_value(const gr_feature_ref* pfeatureref, const gr_feature_val* feats)    //returns 0 if either pointer is NULL
michael@0: {
michael@0:     if (!pfeatureref || !feats) return 0;
michael@0: 
michael@0:     return pfeatureref->getFeatureVal(*feats);
michael@0: }
michael@0: 
michael@0: 
michael@0: int gr_fref_set_feature_value(const gr_feature_ref* pfeatureref, gr_uint16 val, gr_feature_val* pDest)
michael@0: {
michael@0:     if (!pfeatureref || !pDest) return 0;
michael@0:     
michael@0:     return pfeatureref->applyValToFeature(val, *pDest);
michael@0: }
michael@0: 
michael@0: 
michael@0: gr_uint32 gr_fref_id(const gr_feature_ref* pfeatureref)    //returns 0 if pointer is NULL
michael@0: {
michael@0:   if (!pfeatureref)
michael@0:     return 0;
michael@0:   
michael@0:   return pfeatureref->getId();
michael@0: }
michael@0: 
michael@0: 
michael@0: gr_uint16 gr_fref_n_values(const gr_feature_ref* pfeatureref)
michael@0: {
michael@0:     if(!pfeatureref)
michael@0:         return 0;
michael@0:     return pfeatureref->getNumSettings();
michael@0: }
michael@0: 
michael@0: 
michael@0: gr_int16 gr_fref_value(const gr_feature_ref* pfeatureref, gr_uint16 settingno)
michael@0: {
michael@0:     if(!pfeatureref || (settingno >= pfeatureref->getNumSettings()))
michael@0:     {
michael@0:         return 0;
michael@0:     }
michael@0:     return pfeatureref->getSettingValue(settingno);
michael@0: }
michael@0: 
michael@0: 
michael@0: void* gr_fref_label(const gr_feature_ref* pfeatureref, gr_uint16 *langId, gr_encform utf, gr_uint32 *length)
michael@0: {
michael@0:     if(!pfeatureref || !pfeatureref->getFace())
michael@0:     {
michael@0:         langId = 0;
michael@0:         length = 0;
michael@0:         return NULL;
michael@0:     }
michael@0:     uint16 label = pfeatureref->getNameId();
michael@0:     NameTable * names = pfeatureref->getFace()->nameTable();
michael@0:     if (!names)
michael@0:     {
michael@0:         langId = 0;
michael@0:         length = 0;
michael@0:         return NULL;
michael@0:     }
michael@0:     return names->getName(*langId, label, utf, *length);
michael@0: }
michael@0: 
michael@0: 
michael@0: void* gr_fref_value_label(const gr_feature_ref*pfeatureref, gr_uint16 setting,
michael@0:     gr_uint16 *langId, gr_encform utf, gr_uint32 *length)
michael@0: {
michael@0:     if(!pfeatureref || (setting >= pfeatureref->getNumSettings()) || !pfeatureref->getFace())
michael@0:     {
michael@0:         langId = 0;
michael@0:         length = 0;
michael@0:         return NULL;
michael@0:     }
michael@0:     uint16 label = pfeatureref->getSettingName(setting);
michael@0:     NameTable * names = pfeatureref->getFace()->nameTable();
michael@0:     if (!names)
michael@0:     {
michael@0:         langId = 0;
michael@0:         length = 0;
michael@0:         return NULL;
michael@0:     }
michael@0:     return names->getName(*langId, label, utf, *length);
michael@0: }
michael@0: 
michael@0: 
michael@0: void gr_label_destroy(void * label)
michael@0: {
michael@0:     free(label);
michael@0: }
michael@0: 
michael@0: gr_feature_val* gr_featureval_clone(const gr_feature_val* pfeatures/*may be NULL*/)
michael@0: {                      //When finished with the Features, call features_destroy    
michael@0:     return static_cast<gr_feature_val*>(pfeatures ? new Features(*pfeatures) : new Features);
michael@0: }
michael@0:   
michael@0: void gr_featureval_destroy(gr_feature_val *p)
michael@0: {
michael@0:     delete p;
michael@0: }
michael@0: 
michael@0: 
michael@0: } // extern "C"