1 | // SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later |
2 | // Copyright 2010, SIL International, All rights reserved. |
3 | |
4 | #pragma once |
5 | |
6 | #include <cstdio> |
7 | |
8 | #include "graphite2/Font.h" |
9 | |
10 | #include "inc/Main.h" |
11 | #include "inc/FeatureMap.h" |
12 | #include "inc/TtfUtil.h" |
13 | #include "inc/Silf.h" |
14 | #include "inc/Error.h" |
15 | |
16 | namespace graphite2 { |
17 | |
18 | class Cmap; |
19 | class FileFace; |
20 | class GlyphCache; |
21 | class NameTable; |
22 | class json; |
23 | class Font; |
24 | |
25 | |
26 | using TtfUtil::Tag; |
27 | |
28 | // These are the actual tags, as distinct from the consecutive IDs in TtfUtil.h |
29 | |
30 | class Face |
31 | { |
32 | // Prevent any kind of copying |
33 | Face(const Face&); |
34 | Face& operator=(const Face&); |
35 | |
36 | public: |
37 | class Table; |
38 | static float default_glyph_advance(const void* face_ptr, gr_uint16 glyphid); |
39 | |
40 | Face(const void* appFaceHandle/*non-NULL*/, const gr_face_ops & ops); |
41 | virtual ~Face(); |
42 | |
43 | virtual bool runGraphite(Segment *seg, const Silf *silf) const; |
44 | |
45 | public: |
46 | bool readGlyphs(uint32 faceOptions); |
47 | bool readGraphite(const Table & silf); |
48 | bool readFeatures(); |
49 | void takeFileFace(FileFace* pFileFace/*takes ownership*/); |
50 | |
51 | const SillMap & theSill() const; |
52 | const GlyphCache & glyphs() const; |
53 | Cmap & cmap() const; |
54 | NameTable * nameTable() const; |
55 | void setLogger(FILE *log_file); |
56 | json * logger() const throw(); |
57 | |
58 | const Silf * chooseSilf(uint32 script) const; |
59 | uint16 languageForLocale(const char * locale) const; |
60 | |
61 | // Features |
62 | uint16 numFeatures() const; |
63 | const FeatureRef * featureById(uint32 id) const; |
64 | const FeatureRef * feature(uint16 index) const; |
65 | |
66 | // Glyph related |
67 | int32 getGlyphMetric(uint16 gid, uint8 metric) const; |
68 | uint16 findPseudo(uint32 uid) const; |
69 | |
70 | // Errors |
71 | unsigned int error() const { return m_error; } |
72 | bool error(Error e) { m_error = e.error(); return false; } |
73 | unsigned int error_context() const { return m_error; } |
74 | void error_context(unsigned int errcntxt) { m_errcntxt = errcntxt; } |
75 | |
76 | CLASS_NEW_DELETE; |
77 | private: |
78 | SillMap m_Sill; |
79 | gr_face_ops m_ops; |
80 | const void * m_appFaceHandle; // non-NULL |
81 | FileFace * m_pFileFace; //owned |
82 | mutable GlyphCache * m_pGlyphFaceCache; // owned - never NULL |
83 | mutable Cmap * m_cmap; // cmap cache if available |
84 | mutable NameTable * m_pNames; |
85 | mutable json * m_logger; |
86 | unsigned int m_error; |
87 | unsigned int m_errcntxt; |
88 | protected: |
89 | Silf * m_silfs; // silf subtables. |
90 | uint16 m_numSilf; // num silf subtables in the silf table |
91 | private: |
92 | uint16 m_ascent, |
93 | m_descent; |
94 | #ifdef GRAPHITE2_TELEMETRY |
95 | public: |
96 | mutable telemetry tele; |
97 | #endif |
98 | }; |
99 | |
100 | |
101 | |
102 | inline |
103 | const SillMap & Face::theSill() const |
104 | { |
105 | return m_Sill; |
106 | } |
107 | |
108 | inline |
109 | uint16 Face::numFeatures() const |
110 | { |
111 | return m_Sill.theFeatureMap().numFeats(); |
112 | } |
113 | |
114 | inline |
115 | const FeatureRef * Face::featureById(uint32 id) const |
116 | { |
117 | return m_Sill.theFeatureMap().findFeatureRef(id); |
118 | } |
119 | |
120 | inline |
121 | const FeatureRef *Face::feature(uint16 index) const |
122 | { |
123 | return m_Sill.theFeatureMap().feature(index); |
124 | } |
125 | |
126 | inline |
127 | const GlyphCache & Face::glyphs() const |
128 | { |
129 | return *m_pGlyphFaceCache; |
130 | } |
131 | |
132 | inline |
133 | Cmap & Face::cmap() const |
134 | { |
135 | return *m_cmap; |
136 | }; |
137 | |
138 | inline |
139 | json * Face::logger() const throw() |
140 | { |
141 | return m_logger; |
142 | } |
143 | |
144 | |
145 | |
146 | class Face::Table |
147 | { |
148 | const Face * _f; |
149 | mutable const byte * _p; |
150 | size_t _sz; |
151 | bool _compressed; |
152 | |
153 | Error decompress(); |
154 | |
155 | void release(); |
156 | |
157 | public: |
158 | Table() throw(); |
159 | Table(const Face & face, const Tag n, uint32 version=0xffffffff) throw(); |
160 | ~Table() throw(); |
161 | Table(const Table && rhs) throw(); |
162 | |
163 | operator const byte * () const throw(); |
164 | |
165 | size_t size() const throw(); |
166 | Table & operator = (const Table && rhs) throw(); |
167 | }; |
168 | |
169 | inline |
170 | Face::Table::Table() throw() |
171 | : _f(0), _p(0), _sz(0), _compressed(false) |
172 | { |
173 | } |
174 | |
175 | inline |
176 | Face::Table::Table(const Table && rhs) throw() |
177 | : _f(rhs._f), _p(rhs._p), _sz(rhs._sz), _compressed(rhs._compressed) |
178 | { |
179 | rhs._p = 0; |
180 | } |
181 | |
182 | inline |
183 | Face::Table::~Table() throw() |
184 | { |
185 | release(); |
186 | } |
187 | |
188 | inline |
189 | Face::Table::operator const byte * () const throw() |
190 | { |
191 | return _p; |
192 | } |
193 | |
194 | inline |
195 | size_t Face::Table::size() const throw() |
196 | { |
197 | return _sz; |
198 | } |
199 | |
200 | } // namespace graphite2 |
201 | |
202 | struct gr_face : public graphite2::Face {}; |
203 | |