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+/* 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.
+*/
+#pragma once
+#include "inc/Main.h"
+#include "inc/FeatureVal.h"
+
+namespace graphite2 {
+
+// Forward declarations for implmentation types
+class FeatureMap;
+class Face;
+
+
+class FeatureSetting
+{
+public:
+ FeatureSetting(int16 theValue, uint16 labelId) : m_label(labelId), m_value(theValue) {};
+ uint16 label() const { return m_label; }
+ int16 value() const { return m_value; }
+
+ CLASS_NEW_DELETE;
+private:
+ FeatureSetting(const FeatureSetting & fs) : m_label(fs.m_label), m_value(fs.m_value) {};
+
+ uint16 m_label;
+ int16 m_value;
+};
+
+class FeatureRef
+{
+ typedef uint32 chunk_t;
+ static const uint8 SIZEOF_CHUNK = sizeof(chunk_t)*8;
+
+public:
+ FeatureRef();
+ FeatureRef(const Face & face, unsigned short & bits_offset, uint32 max_val,
+ uint32 name, uint16 uiName, uint16 flags,
+ FeatureSetting *settings, uint16 num_set) throw();
+ ~FeatureRef() throw();
+
+ bool applyValToFeature(uint32 val, Features& pDest) const; //defined in GrFaceImp.h
+ void maskFeature(Features & pDest) const {
+ if (m_index < pDest.size()) //defensive
+ pDest[m_index] |= m_mask;
+ }
+
+ uint32 getFeatureVal(const Features& feats) const; //defined in GrFaceImp.h
+
+ uint32 getId() const { return m_id; }
+ uint16 getNameId() const { return m_nameid; }
+ uint16 getNumSettings() const { return m_numSet; }
+ uint16 getSettingName(uint16 index) const { return m_nameValues[index].label(); }
+ int16 getSettingValue(uint16 index) const { return m_nameValues[index].value(); }
+ uint32 maxVal() const { return m_max; }
+ const Face* getFace() const { return m_pFace;}
+ const FeatureMap* getFeatureMap() const;// { return m_pFace;}
+
+ CLASS_NEW_DELETE;
+private:
+ FeatureRef(const FeatureRef & rhs);
+
+ const Face * m_pFace; //not NULL
+ FeatureSetting * m_nameValues; // array of name table ids for feature values
+ chunk_t m_mask, // bit mask to get the value from the vector
+ m_max; // max value the value can take
+ uint32 m_id; // feature identifier/name
+ uint16 m_nameid, // Name table id for feature name
+ m_flags, // feature flags (unused at the moment but read from the font)
+ m_numSet; // number of values (number of entries in m_nameValues)
+ byte m_bits, // how many bits to shift the value into place
+ m_index; // index into the array to find the ulong to mask
+
+private: //unimplemented
+ FeatureRef& operator=(const FeatureRef&);
+};
+
+
+inline
+FeatureRef::FeatureRef()
+: m_pFace(0), m_nameValues(0),
+ m_mask(0), m_max(0), m_id(0),
+ m_nameid(0), m_flags(0), m_numSet(0),
+ m_bits(0), m_index(0)
+{
+}
+
+
+class NameAndFeatureRef
+{
+ public:
+ NameAndFeatureRef(uint32 name = 0) : m_name(name) , m_pFRef(NULL){}
+ NameAndFeatureRef(const FeatureRef* p/*not NULL*/) : m_name(p->getId()), m_pFRef(p) {}
+
+ bool operator<(const NameAndFeatureRef& rhs) const //orders by m_name
+ { return m_name<rhs.m_name; }
+
+ CLASS_NEW_DELETE
+
+ uint32 m_name;
+ const FeatureRef* m_pFRef;
+};
+
+class FeatureMap
+{
+public:
+ FeatureMap() : m_numFeats(0), m_feats(NULL), m_pNamedFeats(NULL) {}
+ ~FeatureMap() { delete [] m_feats; delete[] m_pNamedFeats; }
+
+ bool readFeats(const Face & face);
+ const FeatureRef *findFeatureRef(uint32 name) const;
+ FeatureRef *feature(uint16 index) const { return m_feats + index; }
+ //GrFeatureRef *featureRef(byte index) { return index < m_numFeats ? m_feats + index : NULL; }
+ const FeatureRef *featureRef(byte index) const { return index < m_numFeats ? m_feats + index : NULL; }
+ FeatureVal* cloneFeatures(uint32 langname/*0 means default*/) const; //call destroy_Features when done.
+ uint16 numFeats() const { return m_numFeats; };
+ CLASS_NEW_DELETE
+private:
+friend class SillMap;
+ uint16 m_numFeats;
+
+ FeatureRef *m_feats;
+ NameAndFeatureRef* m_pNamedFeats; //owned
+ FeatureVal m_defaultFeatures; //owned
+
+private: //defensive on m_feats, m_pNamedFeats, and m_defaultFeatures
+ FeatureMap(const FeatureMap&);
+ FeatureMap& operator=(const FeatureMap&);
+};
+
+
+class SillMap
+{
+private:
+ class LangFeaturePair
+ {
+ LangFeaturePair(const LangFeaturePair &);
+ LangFeaturePair & operator = (const LangFeaturePair &);
+
+ public:
+ LangFeaturePair() : m_lang(0), m_pFeatures(0) {}
+ ~LangFeaturePair() { delete m_pFeatures; }
+
+ uint32 m_lang;
+ Features* m_pFeatures; //owns
+ CLASS_NEW_DELETE
+ };
+public:
+ SillMap() : m_langFeats(NULL), m_numLanguages(0) {}
+ ~SillMap() { delete[] m_langFeats; }
+ bool readFace(const Face & face);
+ bool readSill(const Face & face);
+ FeatureVal* cloneFeatures(uint32 langname/*0 means default*/) const; //call destroy_Features when done.
+ uint16 numLanguages() const { return m_numLanguages; };
+ uint32 getLangName(uint16 index) const { return (index < m_numLanguages)? m_langFeats[index].m_lang : 0; };
+
+ const FeatureMap & theFeatureMap() const { return m_FeatureMap; };
+private:
+ FeatureMap m_FeatureMap; //of face
+ LangFeaturePair * m_langFeats;
+ uint16 m_numLanguages;
+
+private: //defensive on m_langFeats
+ SillMap(const SillMap&);
+ SillMap& operator=(const SillMap&);
+};
+
+} // namespace graphite2
+
+struct gr_feature_ref : public graphite2::FeatureRef {};
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