author | prr |
Thu, 07 Dec 2017 11:55:06 -0800 | |
changeset 48274 | 51772bf1fb0c |
parent 47216 | 71c04702a3d5 |
child 50352 | 25db2c8f3cf8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright © 2007,2008,2009 Red Hat, Inc. |
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* Copyright © 2010,2012 Google, Inc. |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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* |
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* Red Hat Author(s): Behdad Esfahbod |
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* Google Author(s): Behdad Esfahbod |
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*/ |
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#ifndef HB_OT_LAYOUT_COMMON_PRIVATE_HH |
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#define HB_OT_LAYOUT_COMMON_PRIVATE_HH |
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#include "hb-private.hh" |
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#include "hb-debug.hh" |
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#include "hb-ot-layout-private.hh" |
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#include "hb-open-type-private.hh" |
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#include "hb-set-private.hh" |
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#ifndef HB_MAX_NESTING_LEVEL |
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#define HB_MAX_NESTING_LEVEL 6 |
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#endif |
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#ifndef HB_MAX_CONTEXT_LENGTH |
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#define HB_MAX_CONTEXT_LENGTH 64 |
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#endif |
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namespace OT { |
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#define NOT_COVERED ((unsigned int) -1) |
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/* |
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* |
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* OpenType Layout Common Table Formats |
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* |
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*/ |
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/* |
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* Script, ScriptList, LangSys, Feature, FeatureList, Lookup, LookupList |
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*/ |
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template <typename Type> |
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struct Record |
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{ |
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inline int cmp (hb_tag_t a) const { |
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return tag.cmp (a); |
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} |
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struct sanitize_closure_t { |
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hb_tag_t tag; |
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const void *list_base; |
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}; |
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inline bool sanitize (hb_sanitize_context_t *c, const void *base) const |
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{ |
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TRACE_SANITIZE (this); |
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const sanitize_closure_t closure = {tag, base}; |
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return_trace (c->check_struct (this) && offset.sanitize (c, base, &closure)); |
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} |
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Tag tag; /* 4-byte Tag identifier */ |
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OffsetTo<Type> |
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offset; /* Offset from beginning of object holding |
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* the Record */ |
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public: |
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DEFINE_SIZE_STATIC (6); |
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}; |
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template <typename Type> |
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struct RecordArrayOf : SortedArrayOf<Record<Type> > { |
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inline const Tag& get_tag (unsigned int i) const |
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{ |
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/* We cheat slightly and don't define separate Null objects |
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* for Record types. Instead, we return the correct Null(Tag) |
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* here. */ |
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if (unlikely (i >= this->len)) return Null(Tag); |
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return (*this)[i].tag; |
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} |
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inline unsigned int get_tags (unsigned int start_offset, |
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unsigned int *record_count /* IN/OUT */, |
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hb_tag_t *record_tags /* OUT */) const |
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{ |
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if (record_count) { |
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const Record<Type> *arr = this->sub_array (start_offset, record_count); |
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unsigned int count = *record_count; |
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for (unsigned int i = 0; i < count; i++) |
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record_tags[i] = arr[i].tag; |
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} |
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return this->len; |
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} |
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inline bool find_index (hb_tag_t tag, unsigned int *index) const |
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{ |
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/* If we want to allow non-sorted data, we can lsearch(). */ |
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int i = this->/*lsearch*/bsearch (tag); |
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if (i != -1) { |
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if (index) *index = i; |
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return true; |
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} else { |
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if (index) *index = Index::NOT_FOUND_INDEX; |
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return false; |
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} |
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} |
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}; |
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template <typename Type> |
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struct RecordListOf : RecordArrayOf<Type> |
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{ |
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inline const Type& operator [] (unsigned int i) const |
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{ return this+RecordArrayOf<Type>::operator [](i).offset; } |
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inline bool sanitize (hb_sanitize_context_t *c) const |
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{ |
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TRACE_SANITIZE (this); |
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return_trace (RecordArrayOf<Type>::sanitize (c, this)); |
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137 |
} |
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138 |
}; |
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139 |
|
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140 |
|
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141 |
struct RangeRecord |
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142 |
{ |
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143 |
inline int cmp (hb_codepoint_t g) const { |
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return g < start ? -1 : g <= end ? 0 : +1 ; |
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} |
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146 |
|
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inline bool sanitize (hb_sanitize_context_t *c) const |
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{ |
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149 |
TRACE_SANITIZE (this); |
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return_trace (c->check_struct (this)); |
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151 |
} |
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152 |
|
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inline bool intersects (const hb_set_t *glyphs) const { |
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return glyphs->intersects (start, end); |
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155 |
} |
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156 |
|
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157 |
template <typename set_t> |
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inline void add_coverage (set_t *glyphs) const { |
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159 |
glyphs->add_range (start, end); |
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160 |
} |
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161 |
|
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GlyphID start; /* First GlyphID in the range */ |
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GlyphID end; /* Last GlyphID in the range */ |
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USHORT value; /* Value */ |
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165 |
public: |
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166 |
DEFINE_SIZE_STATIC (6); |
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167 |
}; |
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DEFINE_NULL_DATA (RangeRecord, "\000\001"); |
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169 |
|
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170 |
|
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struct IndexArray : ArrayOf<Index> |
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{ |
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173 |
inline unsigned int get_indexes (unsigned int start_offset, |
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unsigned int *_count /* IN/OUT */, |
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unsigned int *_indexes /* OUT */) const |
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{ |
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if (_count) { |
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const USHORT *arr = this->sub_array (start_offset, _count); |
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unsigned int count = *_count; |
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for (unsigned int i = 0; i < count; i++) |
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_indexes[i] = arr[i]; |
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182 |
} |
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return this->len; |
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184 |
} |
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185 |
}; |
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186 |
|
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187 |
|
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188 |
struct Script; |
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struct LangSys; |
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struct Feature; |
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191 |
|
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192 |
|
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193 |
struct LangSys |
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194 |
{ |
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195 |
inline unsigned int get_feature_count (void) const |
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{ return featureIndex.len; } |
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197 |
inline hb_tag_t get_feature_index (unsigned int i) const |
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{ return featureIndex[i]; } |
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199 |
inline unsigned int get_feature_indexes (unsigned int start_offset, |
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unsigned int *feature_count /* IN/OUT */, |
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201 |
unsigned int *feature_indexes /* OUT */) const |
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202 |
{ return featureIndex.get_indexes (start_offset, feature_count, feature_indexes); } |
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203 |
|
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204 |
inline bool has_required_feature (void) const { return reqFeatureIndex != 0xFFFFu; } |
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205 |
inline unsigned int get_required_feature_index (void) const |
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206 |
{ |
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207 |
if (reqFeatureIndex == 0xFFFFu) |
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208 |
return Index::NOT_FOUND_INDEX; |
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209 |
return reqFeatureIndex;; |
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210 |
} |
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211 |
|
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212 |
inline bool sanitize (hb_sanitize_context_t *c, |
48274 | 213 |
const Record<LangSys>::sanitize_closure_t * = nullptr) const |
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214 |
{ |
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215 |
TRACE_SANITIZE (this); |
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216 |
return_trace (c->check_struct (this) && featureIndex.sanitize (c)); |
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217 |
} |
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218 |
|
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219 |
Offset<> lookupOrderZ; /* = Null (reserved for an offset to a |
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220 |
* reordering table) */ |
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221 |
USHORT reqFeatureIndex;/* Index of a feature required for this |
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222 |
* language system--if no required features |
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223 |
* = 0xFFFFu */ |
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224 |
IndexArray featureIndex; /* Array of indices into the FeatureList */ |
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225 |
public: |
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226 |
DEFINE_SIZE_ARRAY (6, featureIndex); |
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227 |
}; |
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228 |
DEFINE_NULL_DATA (LangSys, "\0\0\xFF\xFF"); |
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229 |
|
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230 |
|
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231 |
struct Script |
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232 |
{ |
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233 |
inline unsigned int get_lang_sys_count (void) const |
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234 |
{ return langSys.len; } |
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235 |
inline const Tag& get_lang_sys_tag (unsigned int i) const |
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236 |
{ return langSys.get_tag (i); } |
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237 |
inline unsigned int get_lang_sys_tags (unsigned int start_offset, |
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238 |
unsigned int *lang_sys_count /* IN/OUT */, |
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239 |
hb_tag_t *lang_sys_tags /* OUT */) const |
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240 |
{ return langSys.get_tags (start_offset, lang_sys_count, lang_sys_tags); } |
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241 |
inline const LangSys& get_lang_sys (unsigned int i) const |
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242 |
{ |
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243 |
if (i == Index::NOT_FOUND_INDEX) return get_default_lang_sys (); |
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return this+langSys[i].offset; |
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245 |
} |
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246 |
inline bool find_lang_sys_index (hb_tag_t tag, unsigned int *index) const |
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247 |
{ return langSys.find_index (tag, index); } |
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248 |
|
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249 |
inline bool has_default_lang_sys (void) const { return defaultLangSys != 0; } |
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250 |
inline const LangSys& get_default_lang_sys (void) const { return this+defaultLangSys; } |
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251 |
|
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252 |
inline bool sanitize (hb_sanitize_context_t *c, |
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const Record<Script>::sanitize_closure_t * = nullptr) const |
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254 |
{ |
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255 |
TRACE_SANITIZE (this); |
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256 |
return_trace (defaultLangSys.sanitize (c, this) && langSys.sanitize (c, this)); |
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257 |
} |
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258 |
|
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259 |
protected: |
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260 |
OffsetTo<LangSys> |
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261 |
defaultLangSys; /* Offset to DefaultLangSys table--from |
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* beginning of Script table--may be Null */ |
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263 |
RecordArrayOf<LangSys> |
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264 |
langSys; /* Array of LangSysRecords--listed |
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265 |
* alphabetically by LangSysTag */ |
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266 |
public: |
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267 |
DEFINE_SIZE_ARRAY (4, langSys); |
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268 |
}; |
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269 |
|
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270 |
typedef RecordListOf<Script> ScriptList; |
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271 |
|
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272 |
|
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273 |
/* http://www.microsoft.com/typography/otspec/features_pt.htm#size */ |
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274 |
struct FeatureParamsSize |
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275 |
{ |
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276 |
inline bool sanitize (hb_sanitize_context_t *c) const |
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277 |
{ |
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278 |
TRACE_SANITIZE (this); |
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279 |
if (unlikely (!c->check_struct (this))) return_trace (false); |
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280 |
|
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281 |
/* This subtable has some "history", if you will. Some earlier versions of |
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282 |
* Adobe tools calculated the offset of the FeatureParams sutable from the |
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283 |
* beginning of the FeatureList table! Now, that is dealt with in the |
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284 |
* Feature implementation. But we still need to be able to tell junk from |
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285 |
* real data. Note: We don't check that the nameID actually exists. |
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286 |
* |
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287 |
* Read Roberts wrote on 9/15/06 on opentype-list@indx.co.uk : |
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288 |
* |
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289 |
* Yes, it is correct that a new version of the AFDKO (version 2.0) will be |
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290 |
* coming out soon, and that the makeotf program will build a font with a |
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291 |
* 'size' feature that is correct by the specification. |
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292 |
* |
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293 |
* The specification for this feature tag is in the "OpenType Layout Tag |
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294 |
* Registry". You can see a copy of this at: |
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295 |
* http://partners.adobe.com/public/developer/opentype/index_tag8.html#size |
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296 |
* |
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297 |
* Here is one set of rules to determine if the 'size' feature is built |
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298 |
* correctly, or as by the older versions of MakeOTF. You may be able to do |
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299 |
* better. |
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300 |
* |
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301 |
* Assume that the offset to the size feature is according to specification, |
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302 |
* and make the following value checks. If it fails, assume the the size |
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303 |
* feature is calculated as versions of MakeOTF before the AFDKO 2.0 built it. |
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304 |
* If this fails, reject the 'size' feature. The older makeOTF's calculated the |
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305 |
* offset from the beginning of the FeatureList table, rather than from the |
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306 |
* beginning of the 'size' Feature table. |
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307 |
* |
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308 |
* If "design size" == 0: |
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309 |
* fails check |
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310 |
* |
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311 |
* Else if ("subfamily identifier" == 0 and |
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312 |
* "range start" == 0 and |
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313 |
* "range end" == 0 and |
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314 |
* "range start" == 0 and |
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315 |
* "menu name ID" == 0) |
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316 |
* passes check: this is the format used when there is a design size |
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317 |
* specified, but there is no recommended size range. |
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318 |
* |
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319 |
* Else if ("design size" < "range start" or |
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320 |
* "design size" > "range end" or |
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321 |
* "range end" <= "range start" or |
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322 |
* "menu name ID" < 256 or |
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323 |
* "menu name ID" > 32767 or |
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324 |
* menu name ID is not a name ID which is actually in the name table) |
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325 |
* fails test |
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326 |
* Else |
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327 |
* passes test. |
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328 |
*/ |
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329 |
|
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330 |
if (!designSize) |
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331 |
return_trace (false); |
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332 |
else if (subfamilyID == 0 && |
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333 |
subfamilyNameID == 0 && |
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|
334 |
rangeStart == 0 && |
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|
335 |
rangeEnd == 0) |
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|
336 |
return_trace (true); |
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|
337 |
else if (designSize < rangeStart || |
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|
338 |
designSize > rangeEnd || |
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339 |
subfamilyNameID < 256 || |
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|
340 |
subfamilyNameID > 32767) |
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|
341 |
return_trace (false); |
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|
342 |
else |
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|
343 |
return_trace (true); |
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344 |
} |
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345 |
|
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346 |
USHORT designSize; /* Represents the design size in 720/inch |
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347 |
* units (decipoints). The design size entry |
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348 |
* must be non-zero. When there is a design |
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349 |
* size but no recommended size range, the |
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|
350 |
* rest of the array will consist of zeros. */ |
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|
351 |
USHORT subfamilyID; /* Has no independent meaning, but serves |
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|
352 |
* as an identifier that associates fonts |
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|
353 |
* in a subfamily. All fonts which share a |
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|
354 |
* Preferred or Font Family name and which |
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|
355 |
* differ only by size range shall have the |
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|
356 |
* same subfamily value, and no fonts which |
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|
357 |
* differ in weight or style shall have the |
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|
358 |
* same subfamily value. If this value is |
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|
359 |
* zero, the remaining fields in the array |
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360 |
* will be ignored. */ |
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361 |
USHORT subfamilyNameID;/* If the preceding value is non-zero, this |
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362 |
* value must be set in the range 256 - 32767 |
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363 |
* (inclusive). It records the value of a |
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364 |
* field in the name table, which must |
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365 |
* contain English-language strings encoded |
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|
366 |
* in Windows Unicode and Macintosh Roman, |
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367 |
* and may contain additional strings |
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|
368 |
* localized to other scripts and languages. |
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|
369 |
* Each of these strings is the name an |
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370 |
* application should use, in combination |
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371 |
* with the family name, to represent the |
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|
372 |
* subfamily in a menu. Applications will |
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373 |
* choose the appropriate version based on |
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374 |
* their selection criteria. */ |
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375 |
USHORT rangeStart; /* Large end of the recommended usage range |
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376 |
* (inclusive), stored in 720/inch units |
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|
377 |
* (decipoints). */ |
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378 |
USHORT rangeEnd; /* Small end of the recommended usage range |
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379 |
(exclusive), stored in 720/inch units |
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|
380 |
* (decipoints). */ |
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381 |
public: |
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382 |
DEFINE_SIZE_STATIC (10); |
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383 |
}; |
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|
384 |
|
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|
385 |
/* http://www.microsoft.com/typography/otspec/features_pt.htm#ssxx */ |
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changeset
|
386 |
struct FeatureParamsStylisticSet |
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parents:
diff
changeset
|
387 |
{ |
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parents:
diff
changeset
|
388 |
inline bool sanitize (hb_sanitize_context_t *c) const |
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parents:
diff
changeset
|
389 |
{ |
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parents:
diff
changeset
|
390 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
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parents:
diff
changeset
|
391 |
/* Right now minorVersion is at zero. Which means, any table supports |
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parents:
diff
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|
392 |
* the uiNameID field. */ |
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parents:
diff
changeset
|
393 |
return_trace (c->check_struct (this)); |
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parents:
diff
changeset
|
394 |
} |
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parents:
diff
changeset
|
395 |
|
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parents:
diff
changeset
|
396 |
USHORT version; /* (set to 0): This corresponds to a “minor” |
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prr
parents:
diff
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|
397 |
* version number. Additional data may be |
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parents:
diff
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|
398 |
* added to the end of this Feature Parameters |
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prr
parents:
diff
changeset
|
399 |
* table in the future. */ |
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prr
parents:
diff
changeset
|
400 |
|
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prr
parents:
diff
changeset
|
401 |
USHORT uiNameID; /* The 'name' table name ID that specifies a |
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parents:
diff
changeset
|
402 |
* string (or strings, for multiple languages) |
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prr
parents:
diff
changeset
|
403 |
* for a user-interface label for this |
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prr
parents:
diff
changeset
|
404 |
* feature. The values of uiLabelNameId and |
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parents:
diff
changeset
|
405 |
* sampleTextNameId are expected to be in the |
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parents:
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changeset
|
406 |
* font-specific name ID range (256-32767), |
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prr
parents:
diff
changeset
|
407 |
* though that is not a requirement in this |
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prr
parents:
diff
changeset
|
408 |
* Feature Parameters specification. The |
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prr
parents:
diff
changeset
|
409 |
* user-interface label for the feature can |
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prr
parents:
diff
changeset
|
410 |
* be provided in multiple languages. An |
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prr
parents:
diff
changeset
|
411 |
* English string should be included as a |
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parents:
diff
changeset
|
412 |
* fallback. The string should be kept to a |
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prr
parents:
diff
changeset
|
413 |
* minimal length to fit comfortably with |
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prr
parents:
diff
changeset
|
414 |
* different application interfaces. */ |
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parents:
diff
changeset
|
415 |
public: |
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parents:
diff
changeset
|
416 |
DEFINE_SIZE_STATIC (4); |
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parents:
diff
changeset
|
417 |
}; |
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parents:
diff
changeset
|
418 |
|
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parents:
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changeset
|
419 |
/* http://www.microsoft.com/typography/otspec/features_ae.htm#cv01-cv99 */ |
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changeset
|
420 |
struct FeatureParamsCharacterVariants |
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prr
parents:
diff
changeset
|
421 |
{ |
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parents:
diff
changeset
|
422 |
inline bool sanitize (hb_sanitize_context_t *c) const |
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prr
parents:
diff
changeset
|
423 |
{ |
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parents:
diff
changeset
|
424 |
TRACE_SANITIZE (this); |
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parents:
diff
changeset
|
425 |
return_trace (c->check_struct (this) && |
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prr
parents:
diff
changeset
|
426 |
characters.sanitize (c)); |
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prr
parents:
diff
changeset
|
427 |
} |
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prr
parents:
diff
changeset
|
428 |
|
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parents:
diff
changeset
|
429 |
USHORT format; /* Format number is set to 0. */ |
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parents:
diff
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|
430 |
USHORT featUILableNameID; /* The ‘name’ table name ID that |
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parents:
diff
changeset
|
431 |
* specifies a string (or strings, |
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prr
parents:
diff
changeset
|
432 |
* for multiple languages) for a |
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prr
parents:
diff
changeset
|
433 |
* user-interface label for this |
48274 | 434 |
* feature. (May be nullptr.) */ |
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|
435 |
USHORT featUITooltipTextNameID;/* The ‘name’ table name ID that |
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prr
parents:
diff
changeset
|
436 |
* specifies a string (or strings, |
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prr
parents:
diff
changeset
|
437 |
* for multiple languages) that an |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
438 |
* application can use for tooltip |
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prr
parents:
diff
changeset
|
439 |
* text for this feature. (May be |
48274 | 440 |
* nullptr.) */ |
34414
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parents:
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changeset
|
441 |
USHORT sampleTextNameID; /* The ‘name’ table name ID that |
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parents:
diff
changeset
|
442 |
* specifies sample text that |
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parents:
diff
changeset
|
443 |
* illustrates the effect of this |
48274 | 444 |
* feature. (May be nullptr.) */ |
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|
445 |
USHORT numNamedParameters; /* Number of named parameters. (May |
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prr
parents:
diff
changeset
|
446 |
* be zero.) */ |
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parents:
diff
changeset
|
447 |
USHORT firstParamUILabelNameID;/* The first ‘name’ table name ID |
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prr
parents:
diff
changeset
|
448 |
* used to specify strings for |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
449 |
* user-interface labels for the |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
450 |
* feature parameters. (Must be zero |
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parents:
diff
changeset
|
451 |
* if numParameters is zero.) */ |
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parents:
diff
changeset
|
452 |
ArrayOf<UINT24> |
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parents:
diff
changeset
|
453 |
characters; /* Array of the Unicode Scalar Value |
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prr
parents:
diff
changeset
|
454 |
* of the characters for which this |
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prr
parents:
diff
changeset
|
455 |
* feature provides glyph variants. |
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prr
parents:
diff
changeset
|
456 |
* (May be zero.) */ |
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prr
parents:
diff
changeset
|
457 |
public: |
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prr
parents:
diff
changeset
|
458 |
DEFINE_SIZE_ARRAY (14, characters); |
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prr
parents:
diff
changeset
|
459 |
}; |
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prr
parents:
diff
changeset
|
460 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
461 |
struct FeatureParams |
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prr
parents:
diff
changeset
|
462 |
{ |
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parents:
diff
changeset
|
463 |
inline bool sanitize (hb_sanitize_context_t *c, hb_tag_t tag) const |
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prr
parents:
diff
changeset
|
464 |
{ |
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prr
parents:
diff
changeset
|
465 |
TRACE_SANITIZE (this); |
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parents:
diff
changeset
|
466 |
if (tag == HB_TAG ('s','i','z','e')) |
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prr
parents:
diff
changeset
|
467 |
return_trace (u.size.sanitize (c)); |
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prr
parents:
diff
changeset
|
468 |
if ((tag & 0xFFFF0000u) == HB_TAG ('s','s','\0','\0')) /* ssXX */ |
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prr
parents:
diff
changeset
|
469 |
return_trace (u.stylisticSet.sanitize (c)); |
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prr
parents:
diff
changeset
|
470 |
if ((tag & 0xFFFF0000u) == HB_TAG ('c','v','\0','\0')) /* cvXX */ |
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prr
parents:
diff
changeset
|
471 |
return_trace (u.characterVariants.sanitize (c)); |
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prr
parents:
diff
changeset
|
472 |
return_trace (true); |
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prr
parents:
diff
changeset
|
473 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
474 |
|
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prr
parents:
diff
changeset
|
475 |
inline const FeatureParamsSize& get_size_params (hb_tag_t tag) const |
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prr
parents:
diff
changeset
|
476 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
477 |
if (tag == HB_TAG ('s','i','z','e')) |
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prr
parents:
diff
changeset
|
478 |
return u.size; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
479 |
return Null(FeatureParamsSize); |
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prr
parents:
diff
changeset
|
480 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
481 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
482 |
private: |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
483 |
union { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
484 |
FeatureParamsSize size; |
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parents:
diff
changeset
|
485 |
FeatureParamsStylisticSet stylisticSet; |
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prr
parents:
diff
changeset
|
486 |
FeatureParamsCharacterVariants characterVariants; |
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prr
parents:
diff
changeset
|
487 |
} u; |
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prr
parents:
diff
changeset
|
488 |
DEFINE_SIZE_STATIC (17); |
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prr
parents:
diff
changeset
|
489 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
490 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
491 |
struct Feature |
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prr
parents:
diff
changeset
|
492 |
{ |
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prr
parents:
diff
changeset
|
493 |
inline unsigned int get_lookup_count (void) const |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
494 |
{ return lookupIndex.len; } |
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prr
parents:
diff
changeset
|
495 |
inline hb_tag_t get_lookup_index (unsigned int i) const |
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prr
parents:
diff
changeset
|
496 |
{ return lookupIndex[i]; } |
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prr
parents:
diff
changeset
|
497 |
inline unsigned int get_lookup_indexes (unsigned int start_index, |
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prr
parents:
diff
changeset
|
498 |
unsigned int *lookup_count /* IN/OUT */, |
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prr
parents:
diff
changeset
|
499 |
unsigned int *lookup_tags /* OUT */) const |
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prr
parents:
diff
changeset
|
500 |
{ return lookupIndex.get_indexes (start_index, lookup_count, lookup_tags); } |
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prr
parents:
diff
changeset
|
501 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
502 |
inline const FeatureParams &get_feature_params (void) const |
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prr
parents:
diff
changeset
|
503 |
{ return this+featureParams; } |
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prr
parents:
diff
changeset
|
504 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
505 |
inline bool sanitize (hb_sanitize_context_t *c, |
48274 | 506 |
const Record<Feature>::sanitize_closure_t *closure = nullptr) const |
34414
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parents:
diff
changeset
|
507 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
508 |
TRACE_SANITIZE (this); |
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prr
parents:
diff
changeset
|
509 |
if (unlikely (!(c->check_struct (this) && lookupIndex.sanitize (c)))) |
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prr
parents:
diff
changeset
|
510 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
511 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
512 |
/* Some earlier versions of Adobe tools calculated the offset of the |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
513 |
* FeatureParams subtable from the beginning of the FeatureList table! |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
514 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
515 |
* If sanitizing "failed" for the FeatureParams subtable, try it with the |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
516 |
* alternative location. We would know sanitize "failed" if old value |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
517 |
* of the offset was non-zero, but it's zeroed now. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
518 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
519 |
* Only do this for the 'size' feature, since at the time of the faulty |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
520 |
* Adobe tools, only the 'size' feature had FeatureParams defined. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
521 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
522 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
523 |
OffsetTo<FeatureParams> orig_offset = featureParams; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
524 |
if (unlikely (!featureParams.sanitize (c, this, closure ? closure->tag : HB_TAG_NONE))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
525 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
526 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
527 |
if (likely (orig_offset.is_null ())) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
528 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
529 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
530 |
if (featureParams == 0 && closure && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
531 |
closure->tag == HB_TAG ('s','i','z','e') && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
532 |
closure->list_base && closure->list_base < this) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
533 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
534 |
unsigned int new_offset_int = (unsigned int) orig_offset - |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
535 |
(((char *) this) - ((char *) closure->list_base)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
536 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
537 |
OffsetTo<FeatureParams> new_offset; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
538 |
/* Check that it did not overflow. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
539 |
new_offset.set (new_offset_int); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
540 |
if (new_offset == new_offset_int && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
541 |
c->try_set (&featureParams, new_offset) && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
542 |
!featureParams.sanitize (c, this, closure ? closure->tag : HB_TAG_NONE)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
543 |
return_trace (false); |
40435 | 544 |
|
545 |
if (c->edit_count > 1) |
|
546 |
c->edit_count--; /* This was a "legitimate" edit; don't contribute to error count. */ |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
547 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
548 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
549 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
550 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
551 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
552 |
OffsetTo<FeatureParams> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
553 |
featureParams; /* Offset to Feature Parameters table (if one |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
554 |
* has been defined for the feature), relative |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
555 |
* to the beginning of the Feature Table; = Null |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
556 |
* if not required */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
557 |
IndexArray lookupIndex; /* Array of LookupList indices */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
558 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
559 |
DEFINE_SIZE_ARRAY (4, lookupIndex); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
560 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
561 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
562 |
typedef RecordListOf<Feature> FeatureList; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
563 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
564 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
565 |
struct LookupFlag : USHORT |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
566 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
567 |
enum Flags { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
568 |
RightToLeft = 0x0001u, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
569 |
IgnoreBaseGlyphs = 0x0002u, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
570 |
IgnoreLigatures = 0x0004u, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
571 |
IgnoreMarks = 0x0008u, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
572 |
IgnoreFlags = 0x000Eu, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
573 |
UseMarkFilteringSet = 0x0010u, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
574 |
Reserved = 0x00E0u, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
575 |
MarkAttachmentType = 0xFF00u |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
576 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
577 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
578 |
DEFINE_SIZE_STATIC (2); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
579 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
580 |
|
40435 | 581 |
} /* namespace OT */ |
582 |
/* This has to be outside the namespace. */ |
|
583 |
HB_MARK_AS_FLAG_T (OT::LookupFlag::Flags); |
|
584 |
namespace OT { |
|
585 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
586 |
struct Lookup |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
587 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
588 |
inline unsigned int get_subtable_count (void) const { return subTable.len; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
589 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
590 |
template <typename SubTableType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
591 |
inline const SubTableType& get_subtable (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
592 |
{ return this+CastR<OffsetArrayOf<SubTableType> > (subTable)[i]; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
593 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
594 |
template <typename SubTableType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
595 |
inline const OffsetArrayOf<SubTableType>& get_subtables (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
596 |
{ return CastR<OffsetArrayOf<SubTableType> > (subTable); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
597 |
template <typename SubTableType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
598 |
inline OffsetArrayOf<SubTableType>& get_subtables (void) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
599 |
{ return CastR<OffsetArrayOf<SubTableType> > (subTable); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
600 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
601 |
inline unsigned int get_type (void) const { return lookupType; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
602 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
603 |
/* lookup_props is a 32-bit integer where the lower 16-bit is LookupFlag and |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
604 |
* higher 16-bit is mark-filtering-set if the lookup uses one. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
605 |
* Not to be confused with glyph_props which is very similar. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
606 |
inline uint32_t get_props (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
607 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
608 |
unsigned int flag = lookupFlag; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
609 |
if (unlikely (flag & LookupFlag::UseMarkFilteringSet)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
610 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
611 |
const USHORT &markFilteringSet = StructAfter<USHORT> (subTable); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
612 |
flag += (markFilteringSet << 16); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
613 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
614 |
return flag; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
615 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
616 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
617 |
template <typename SubTableType, typename context_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
618 |
inline typename context_t::return_t dispatch (context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
619 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
620 |
unsigned int lookup_type = get_type (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
621 |
TRACE_DISPATCH (this, lookup_type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
622 |
unsigned int count = get_subtable_count (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
623 |
for (unsigned int i = 0; i < count; i++) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
624 |
typename context_t::return_t r = get_subtable<SubTableType> (i).dispatch (c, lookup_type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
625 |
if (c->stop_sublookup_iteration (r)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
626 |
return_trace (r); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
627 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
628 |
return_trace (c->default_return_value ()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
629 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
630 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
631 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
632 |
unsigned int lookup_type, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
633 |
uint32_t lookup_props, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
634 |
unsigned int num_subtables) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
635 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
636 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
637 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
638 |
lookupType.set (lookup_type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
639 |
lookupFlag.set (lookup_props & 0xFFFFu); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
640 |
if (unlikely (!subTable.serialize (c, num_subtables))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
641 |
if (lookupFlag & LookupFlag::UseMarkFilteringSet) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
642 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
643 |
USHORT &markFilteringSet = StructAfter<USHORT> (subTable); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
644 |
markFilteringSet.set (lookup_props >> 16); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
645 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
646 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
647 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
648 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
649 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
650 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
651 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
652 |
/* Real sanitize of the subtables is done by GSUB/GPOS/... */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
653 |
if (!(c->check_struct (this) && subTable.sanitize (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
654 |
if (lookupFlag & LookupFlag::UseMarkFilteringSet) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
655 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
656 |
const USHORT &markFilteringSet = StructAfter<USHORT> (subTable); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
657 |
if (!markFilteringSet.sanitize (c)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
658 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
659 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
660 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
661 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
662 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
663 |
USHORT lookupType; /* Different enumerations for GSUB and GPOS */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
664 |
USHORT lookupFlag; /* Lookup qualifiers */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
665 |
ArrayOf<Offset<> > |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
666 |
subTable; /* Array of SubTables */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
667 |
USHORT markFilteringSetX[VAR]; /* Index (base 0) into GDEF mark glyph sets |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
668 |
* structure. This field is only present if bit |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
669 |
* UseMarkFilteringSet of lookup flags is set. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
670 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
671 |
DEFINE_SIZE_ARRAY2 (6, subTable, markFilteringSetX); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
672 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
673 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
674 |
typedef OffsetListOf<Lookup> LookupList; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
675 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
676 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
677 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
678 |
* Coverage Table |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
679 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
680 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
681 |
struct CoverageFormat1 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
682 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
683 |
friend struct Coverage; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
684 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
685 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
686 |
inline unsigned int get_coverage (hb_codepoint_t glyph_id) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
687 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
688 |
int i = glyphArray.bsearch (glyph_id); |
48274 | 689 |
static_assert ((((unsigned int) -1) == NOT_COVERED), ""); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
690 |
return i; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
691 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
692 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
693 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
694 |
Supplier<GlyphID> &glyphs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
695 |
unsigned int num_glyphs) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
696 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
697 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
698 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
699 |
glyphArray.len.set (num_glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
700 |
if (unlikely (!c->extend (glyphArray))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
701 |
for (unsigned int i = 0; i < num_glyphs; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
702 |
glyphArray[i] = glyphs[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
703 |
glyphs.advance (num_glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
704 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
705 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
706 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
707 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
708 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
709 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
710 |
return_trace (glyphArray.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
711 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
712 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
713 |
inline bool intersects_coverage (const hb_set_t *glyphs, unsigned int index) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
714 |
return glyphs->has (glyphArray[index]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
715 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
716 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
717 |
template <typename set_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
718 |
inline void add_coverage (set_t *glyphs) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
719 |
unsigned int count = glyphArray.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
720 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
721 |
glyphs->add (glyphArray[i]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
722 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
723 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
724 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
725 |
/* Older compilers need this to be public. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
726 |
struct Iter { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
727 |
inline void init (const struct CoverageFormat1 &c_) { c = &c_; i = 0; }; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
728 |
inline bool more (void) { return i < c->glyphArray.len; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
729 |
inline void next (void) { i++; } |
43232 | 730 |
inline hb_codepoint_t get_glyph (void) { return c->glyphArray[i]; } |
731 |
inline unsigned int get_coverage (void) { return i; } |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
732 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
733 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
734 |
const struct CoverageFormat1 *c; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
735 |
unsigned int i; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
736 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
737 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
738 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
739 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
740 |
USHORT coverageFormat; /* Format identifier--format = 1 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
741 |
SortedArrayOf<GlyphID> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
742 |
glyphArray; /* Array of GlyphIDs--in numerical order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
743 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
744 |
DEFINE_SIZE_ARRAY (4, glyphArray); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
745 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
746 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
747 |
struct CoverageFormat2 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
748 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
749 |
friend struct Coverage; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
750 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
751 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
752 |
inline unsigned int get_coverage (hb_codepoint_t glyph_id) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
753 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
754 |
int i = rangeRecord.bsearch (glyph_id); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
755 |
if (i != -1) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
756 |
const RangeRecord &range = rangeRecord[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
757 |
return (unsigned int) range.value + (glyph_id - range.start); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
758 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
759 |
return NOT_COVERED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
760 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
761 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
762 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
763 |
Supplier<GlyphID> &glyphs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
764 |
unsigned int num_glyphs) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
765 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
766 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
767 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
768 |
|
40435 | 769 |
if (unlikely (!num_glyphs)) |
770 |
{ |
|
771 |
rangeRecord.len.set (0); |
|
772 |
return_trace (true); |
|
773 |
} |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
774 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
775 |
unsigned int num_ranges = 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
776 |
for (unsigned int i = 1; i < num_glyphs; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
777 |
if (glyphs[i - 1] + 1 != glyphs[i]) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
778 |
num_ranges++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
779 |
rangeRecord.len.set (num_ranges); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
780 |
if (unlikely (!c->extend (rangeRecord))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
781 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
782 |
unsigned int range = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
783 |
rangeRecord[range].start = glyphs[0]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
784 |
rangeRecord[range].value.set (0); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
785 |
for (unsigned int i = 1; i < num_glyphs; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
786 |
if (glyphs[i - 1] + 1 != glyphs[i]) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
787 |
range++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
788 |
rangeRecord[range].start = glyphs[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
789 |
rangeRecord[range].value.set (i); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
790 |
rangeRecord[range].end = glyphs[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
791 |
} else { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
792 |
rangeRecord[range].end = glyphs[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
793 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
794 |
glyphs.advance (num_glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
795 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
796 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
797 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
798 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
799 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
800 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
801 |
return_trace (rangeRecord.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
802 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
803 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
804 |
inline bool intersects_coverage (const hb_set_t *glyphs, unsigned int index) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
805 |
unsigned int i; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
806 |
unsigned int count = rangeRecord.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
807 |
for (i = 0; i < count; i++) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
808 |
const RangeRecord &range = rangeRecord[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
809 |
if (range.value <= index && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
810 |
index < (unsigned int) range.value + (range.end - range.start) && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
811 |
range.intersects (glyphs)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
812 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
813 |
else if (index < range.value) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
814 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
815 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
816 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
817 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
818 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
819 |
template <typename set_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
820 |
inline void add_coverage (set_t *glyphs) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
821 |
unsigned int count = rangeRecord.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
822 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
823 |
rangeRecord[i].add_coverage (glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
824 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
825 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
826 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
827 |
/* Older compilers need this to be public. */ |
43232 | 828 |
struct Iter |
829 |
{ |
|
830 |
inline void init (const CoverageFormat2 &c_) |
|
831 |
{ |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
832 |
c = &c_; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
833 |
coverage = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
834 |
i = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
835 |
j = c->rangeRecord.len ? c_.rangeRecord[0].start : 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
836 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
837 |
inline bool more (void) { return i < c->rangeRecord.len; } |
43232 | 838 |
inline void next (void) |
839 |
{ |
|
840 |
if (j >= c->rangeRecord[i].end) |
|
841 |
{ |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
842 |
i++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
843 |
if (more ()) |
43232 | 844 |
{ |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
845 |
j = c->rangeRecord[i].start; |
43232 | 846 |
coverage = c->rangeRecord[i].value; |
847 |
} |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
848 |
return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
849 |
} |
43232 | 850 |
coverage++; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
851 |
j++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
852 |
} |
43232 | 853 |
inline hb_codepoint_t get_glyph (void) { return j; } |
854 |
inline unsigned int get_coverage (void) { return coverage; } |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
855 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
856 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
857 |
const struct CoverageFormat2 *c; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
858 |
unsigned int i, j, coverage; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
859 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
860 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
861 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
862 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
863 |
USHORT coverageFormat; /* Format identifier--format = 2 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
864 |
SortedArrayOf<RangeRecord> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
865 |
rangeRecord; /* Array of glyph ranges--ordered by |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
866 |
* Start GlyphID. rangeCount entries |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
867 |
* long */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
868 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
869 |
DEFINE_SIZE_ARRAY (4, rangeRecord); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
870 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
871 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
872 |
struct Coverage |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
873 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
874 |
inline unsigned int get_coverage (hb_codepoint_t glyph_id) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
875 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
876 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
877 |
case 1: return u.format1.get_coverage(glyph_id); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
878 |
case 2: return u.format2.get_coverage(glyph_id); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
879 |
default:return NOT_COVERED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
880 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
881 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
882 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
883 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
884 |
Supplier<GlyphID> &glyphs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
885 |
unsigned int num_glyphs) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
886 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
887 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
888 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
889 |
unsigned int num_ranges = 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
890 |
for (unsigned int i = 1; i < num_glyphs; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
891 |
if (glyphs[i - 1] + 1 != glyphs[i]) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
892 |
num_ranges++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
893 |
u.format.set (num_glyphs * 2 < num_ranges * 3 ? 1 : 2); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
894 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
895 |
case 1: return_trace (u.format1.serialize (c, glyphs, num_glyphs)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
896 |
case 2: return_trace (u.format2.serialize (c, glyphs, num_glyphs)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
897 |
default:return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
898 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
899 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
900 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
901 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
902 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
903 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
904 |
if (!u.format.sanitize (c)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
905 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
906 |
case 1: return_trace (u.format1.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
907 |
case 2: return_trace (u.format2.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
908 |
default:return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
909 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
910 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
911 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
912 |
inline bool intersects (const hb_set_t *glyphs) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
913 |
/* TODO speed this up */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
914 |
Coverage::Iter iter; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
915 |
for (iter.init (*this); iter.more (); iter.next ()) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
916 |
if (glyphs->has (iter.get_glyph ())) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
917 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
918 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
919 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
920 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
921 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
922 |
inline bool intersects_coverage (const hb_set_t *glyphs, unsigned int index) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
923 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
924 |
case 1: return u.format1.intersects_coverage (glyphs, index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
925 |
case 2: return u.format2.intersects_coverage (glyphs, index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
926 |
default:return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
927 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
928 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
929 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
930 |
template <typename set_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
931 |
inline void add_coverage (set_t *glyphs) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
932 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
933 |
case 1: u.format1.add_coverage (glyphs); break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
934 |
case 2: u.format2.add_coverage (glyphs); break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
935 |
default: break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
936 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
937 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
938 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
939 |
struct Iter { |
48274 | 940 |
Iter (void) : format (0), u () {}; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
941 |
inline void init (const Coverage &c_) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
942 |
format = c_.u.format; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
943 |
switch (format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
944 |
case 1: u.format1.init (c_.u.format1); return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
945 |
case 2: u.format2.init (c_.u.format2); return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
946 |
default: return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
947 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
948 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
949 |
inline bool more (void) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
950 |
switch (format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
951 |
case 1: return u.format1.more (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
952 |
case 2: return u.format2.more (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
953 |
default:return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
954 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
955 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
956 |
inline void next (void) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
957 |
switch (format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
958 |
case 1: u.format1.next (); break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
959 |
case 2: u.format2.next (); break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
960 |
default: break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
961 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
962 |
} |
43232 | 963 |
inline hb_codepoint_t get_glyph (void) { |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
964 |
switch (format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
965 |
case 1: return u.format1.get_glyph (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
966 |
case 2: return u.format2.get_glyph (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
967 |
default:return 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
968 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
969 |
} |
43232 | 970 |
inline unsigned int get_coverage (void) { |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
971 |
switch (format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
972 |
case 1: return u.format1.get_coverage (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
973 |
case 2: return u.format2.get_coverage (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
974 |
default:return -1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
975 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
976 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
977 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
978 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
979 |
unsigned int format; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
980 |
union { |
48274 | 981 |
CoverageFormat2::Iter format2; /* Put this one first since it's larger; helps shut up compiler. */ |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
982 |
CoverageFormat1::Iter format1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
983 |
} u; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
984 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
985 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
986 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
987 |
union { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
988 |
USHORT format; /* Format identifier */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
989 |
CoverageFormat1 format1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
990 |
CoverageFormat2 format2; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
991 |
} u; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
992 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
993 |
DEFINE_SIZE_UNION (2, format); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
994 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
995 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
996 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
997 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
998 |
* Class Definition Table |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
999 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1000 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1001 |
struct ClassDefFormat1 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1002 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1003 |
friend struct ClassDef; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1004 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1005 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1006 |
inline unsigned int get_class (hb_codepoint_t glyph_id) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1007 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1008 |
unsigned int i = (unsigned int) (glyph_id - startGlyph); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1009 |
if (unlikely (i < classValue.len)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1010 |
return classValue[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1011 |
return 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1012 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1013 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1014 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1015 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1016 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1017 |
return_trace (c->check_struct (this) && classValue.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1018 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1019 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1020 |
template <typename set_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1021 |
inline void add_class (set_t *glyphs, unsigned int klass) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1022 |
unsigned int count = classValue.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1023 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1024 |
if (classValue[i] == klass) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1025 |
glyphs->add (startGlyph + i); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1026 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1027 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1028 |
inline bool intersects_class (const hb_set_t *glyphs, unsigned int klass) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1029 |
unsigned int count = classValue.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1030 |
if (klass == 0) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1031 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1032 |
/* Match if there's any glyph that is not listed! */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1033 |
hb_codepoint_t g = -1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1034 |
if (!hb_set_next (glyphs, &g)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1035 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1036 |
if (g < startGlyph) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1037 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1038 |
g = startGlyph + count - 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1039 |
if (hb_set_next (glyphs, &g)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1040 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1041 |
/* Fall through. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1042 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1043 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1044 |
if (classValue[i] == klass && glyphs->has (startGlyph + i)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1045 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1046 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1047 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1048 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1049 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1050 |
USHORT classFormat; /* Format identifier--format = 1 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1051 |
GlyphID startGlyph; /* First GlyphID of the classValueArray */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1052 |
ArrayOf<USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1053 |
classValue; /* Array of Class Values--one per GlyphID */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1054 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1055 |
DEFINE_SIZE_ARRAY (6, classValue); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1056 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1057 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1058 |
struct ClassDefFormat2 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1059 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1060 |
friend struct ClassDef; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1061 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1062 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1063 |
inline unsigned int get_class (hb_codepoint_t glyph_id) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1064 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1065 |
int i = rangeRecord.bsearch (glyph_id); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1066 |
if (unlikely (i != -1)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1067 |
return rangeRecord[i].value; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1068 |
return 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1069 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1070 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1071 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1072 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1073 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1074 |
return_trace (rangeRecord.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1075 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1076 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1077 |
template <typename set_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1078 |
inline void add_class (set_t *glyphs, unsigned int klass) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1079 |
unsigned int count = rangeRecord.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1080 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1081 |
if (rangeRecord[i].value == klass) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1082 |
rangeRecord[i].add_coverage (glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1083 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1084 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1085 |
inline bool intersects_class (const hb_set_t *glyphs, unsigned int klass) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1086 |
unsigned int count = rangeRecord.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1087 |
if (klass == 0) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1088 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1089 |
/* Match if there's any glyph that is not listed! */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1090 |
hb_codepoint_t g = (hb_codepoint_t) -1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1091 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1092 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1093 |
if (!hb_set_next (glyphs, &g)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1094 |
break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1095 |
if (g < rangeRecord[i].start) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1096 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1097 |
g = rangeRecord[i].end; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1098 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1099 |
if (g != (hb_codepoint_t) -1 && hb_set_next (glyphs, &g)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1100 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1101 |
/* Fall through. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1102 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1103 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1104 |
if (rangeRecord[i].value == klass && rangeRecord[i].intersects (glyphs)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1105 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1106 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1107 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1108 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1109 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1110 |
USHORT classFormat; /* Format identifier--format = 2 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1111 |
SortedArrayOf<RangeRecord> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1112 |
rangeRecord; /* Array of glyph ranges--ordered by |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1113 |
* Start GlyphID */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1114 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1115 |
DEFINE_SIZE_ARRAY (4, rangeRecord); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1116 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1117 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1118 |
struct ClassDef |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1119 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1120 |
inline unsigned int get_class (hb_codepoint_t glyph_id) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1121 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1122 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1123 |
case 1: return u.format1.get_class(glyph_id); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1124 |
case 2: return u.format2.get_class(glyph_id); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1125 |
default:return 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1126 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1127 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1128 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1129 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1130 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1131 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1132 |
if (!u.format.sanitize (c)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1133 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1134 |
case 1: return_trace (u.format1.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1135 |
case 2: return_trace (u.format2.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1136 |
default:return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1137 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1138 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1139 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1140 |
inline void add_class (hb_set_t *glyphs, unsigned int klass) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1141 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1142 |
case 1: u.format1.add_class (glyphs, klass); return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1143 |
case 2: u.format2.add_class (glyphs, klass); return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1144 |
default:return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1145 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1146 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1147 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1148 |
inline bool intersects_class (const hb_set_t *glyphs, unsigned int klass) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1149 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1150 |
case 1: return u.format1.intersects_class (glyphs, klass); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1151 |
case 2: return u.format2.intersects_class (glyphs, klass); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1152 |
default:return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1153 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1154 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1155 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1156 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1157 |
union { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1158 |
USHORT format; /* Format identifier */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1159 |
ClassDefFormat1 format1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1160 |
ClassDefFormat2 format2; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1161 |
} u; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
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parents:
diff
changeset
|
1162 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1163 |
DEFINE_SIZE_UNION (2, format); |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1164 |
}; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
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parents:
diff
changeset
|
1165 |
|
e496a8d8fc8a
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parents:
diff
changeset
|
1166 |
|
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parents:
diff
changeset
|
1167 |
/* |
43232 | 1168 |
* Item Variation Store |
1169 |
*/ |
|
1170 |
||
1171 |
struct VarRegionAxis |
|
1172 |
{ |
|
1173 |
inline float evaluate (int coord) const |
|
1174 |
{ |
|
1175 |
int start = startCoord, peak = peakCoord, end = endCoord; |
|
1176 |
||
1177 |
/* TODO Move these to sanitize(). */ |
|
1178 |
if (unlikely (start > peak || peak > end)) |
|
1179 |
return 1.; |
|
1180 |
if (unlikely (start < 0 && end > 0 && peak != 0)) |
|
1181 |
return 1.; |
|
1182 |
||
1183 |
if (peak == 0 || coord == peak) |
|
1184 |
return 1.; |
|
1185 |
||
1186 |
if (coord <= start || end <= coord) |
|
1187 |
return 0.; |
|
1188 |
||
1189 |
/* Interpolate */ |
|
1190 |
if (coord < peak) |
|
1191 |
return float (coord - start) / (peak - start); |
|
1192 |
else |
|
1193 |
return float (end - coord) / (end - peak); |
|
1194 |
} |
|
1195 |
||
1196 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1197 |
{ |
|
1198 |
TRACE_SANITIZE (this); |
|
1199 |
return_trace (c->check_struct (this)); |
|
1200 |
/* TODO Handle invalid start/peak/end configs, so we don't |
|
1201 |
* have to do that at runtime. */ |
|
1202 |
} |
|
1203 |
||
1204 |
public: |
|
1205 |
F2DOT14 startCoord; |
|
1206 |
F2DOT14 peakCoord; |
|
1207 |
F2DOT14 endCoord; |
|
1208 |
public: |
|
1209 |
DEFINE_SIZE_STATIC (6); |
|
1210 |
}; |
|
1211 |
||
1212 |
struct VarRegionList |
|
1213 |
{ |
|
1214 |
inline float evaluate (unsigned int region_index, |
|
1215 |
int *coords, unsigned int coord_len) const |
|
1216 |
{ |
|
1217 |
if (unlikely (region_index >= regionCount)) |
|
1218 |
return 0.; |
|
1219 |
||
1220 |
const VarRegionAxis *axes = axesZ + (region_index * axisCount); |
|
1221 |
||
1222 |
float v = 1.; |
|
1223 |
unsigned int count = MIN (coord_len, (unsigned int) axisCount); |
|
1224 |
for (unsigned int i = 0; i < count; i++) |
|
1225 |
{ |
|
1226 |
float factor = axes[i].evaluate (coords[i]); |
|
1227 |
if (factor == 0.) |
|
1228 |
return 0.; |
|
1229 |
v *= factor; |
|
1230 |
} |
|
1231 |
return v; |
|
1232 |
} |
|
1233 |
||
1234 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1235 |
{ |
|
1236 |
TRACE_SANITIZE (this); |
|
1237 |
return_trace (c->check_struct (this) && |
|
1238 |
c->check_array (axesZ, axesZ[0].static_size, |
|
1239 |
(unsigned int) axisCount * (unsigned int) regionCount)); |
|
1240 |
} |
|
1241 |
||
1242 |
protected: |
|
1243 |
USHORT axisCount; |
|
1244 |
USHORT regionCount; |
|
1245 |
VarRegionAxis axesZ[VAR]; |
|
1246 |
public: |
|
1247 |
DEFINE_SIZE_ARRAY (4, axesZ); |
|
1248 |
}; |
|
1249 |
||
1250 |
struct VarData |
|
1251 |
{ |
|
1252 |
inline unsigned int get_row_size (void) const |
|
1253 |
{ return shortCount + regionIndices.len; } |
|
1254 |
||
1255 |
inline unsigned int get_size (void) const |
|
1256 |
{ return itemCount * get_row_size (); } |
|
1257 |
||
1258 |
inline float get_delta (unsigned int inner, |
|
1259 |
int *coords, unsigned int coord_count, |
|
1260 |
const VarRegionList ®ions) const |
|
1261 |
{ |
|
1262 |
if (unlikely (inner >= itemCount)) |
|
1263 |
return 0.; |
|
1264 |
||
1265 |
unsigned int count = regionIndices.len; |
|
1266 |
unsigned int scount = shortCount; |
|
1267 |
||
1268 |
const BYTE *bytes = &StructAfter<BYTE> (regionIndices); |
|
1269 |
const BYTE *row = bytes + inner * (scount + count); |
|
1270 |
||
1271 |
float delta = 0.; |
|
1272 |
unsigned int i = 0; |
|
1273 |
||
1274 |
const SHORT *scursor = reinterpret_cast<const SHORT *> (row); |
|
1275 |
for (; i < scount; i++) |
|
1276 |
{ |
|
1277 |
float scalar = regions.evaluate (regionIndices.array[i], coords, coord_count); |
|
1278 |
delta += scalar * *scursor++; |
|
1279 |
} |
|
1280 |
const INT8 *bcursor = reinterpret_cast<const INT8 *> (scursor); |
|
1281 |
for (; i < count; i++) |
|
1282 |
{ |
|
1283 |
float scalar = regions.evaluate (regionIndices.array[i], coords, coord_count); |
|
1284 |
delta += scalar * *bcursor++; |
|
1285 |
} |
|
1286 |
||
1287 |
return delta; |
|
1288 |
} |
|
1289 |
||
1290 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1291 |
{ |
|
1292 |
TRACE_SANITIZE (this); |
|
1293 |
return_trace (c->check_struct (this) && |
|
1294 |
regionIndices.sanitize(c) && |
|
1295 |
shortCount <= regionIndices.len && |
|
1296 |
c->check_array (&StructAfter<BYTE> (regionIndices), |
|
1297 |
get_row_size (), itemCount)); |
|
1298 |
} |
|
1299 |
||
1300 |
protected: |
|
1301 |
USHORT itemCount; |
|
1302 |
USHORT shortCount; |
|
1303 |
ArrayOf<USHORT> regionIndices; |
|
1304 |
BYTE bytesX[VAR]; |
|
1305 |
public: |
|
1306 |
DEFINE_SIZE_ARRAY2 (6, regionIndices, bytesX); |
|
1307 |
}; |
|
1308 |
||
1309 |
struct VariationStore |
|
1310 |
{ |
|
1311 |
inline float get_delta (unsigned int outer, unsigned int inner, |
|
1312 |
int *coords, unsigned int coord_count) const |
|
1313 |
{ |
|
1314 |
if (unlikely (outer >= dataSets.len)) |
|
1315 |
return 0.; |
|
1316 |
||
1317 |
return (this+dataSets[outer]).get_delta (inner, |
|
1318 |
coords, coord_count, |
|
1319 |
this+regions); |
|
1320 |
} |
|
1321 |
||
48274 | 1322 |
inline float get_delta (unsigned int index, |
1323 |
int *coords, unsigned int coord_count) const |
|
1324 |
{ |
|
1325 |
unsigned int outer = index >> 16; |
|
1326 |
unsigned int inner = index & 0xFFFF; |
|
1327 |
return get_delta (outer, inner, coords, coord_count); |
|
1328 |
} |
|
1329 |
||
43232 | 1330 |
inline bool sanitize (hb_sanitize_context_t *c) const |
1331 |
{ |
|
1332 |
TRACE_SANITIZE (this); |
|
1333 |
return_trace (c->check_struct (this) && |
|
1334 |
format == 1 && |
|
1335 |
regions.sanitize (c, this) && |
|
1336 |
dataSets.sanitize (c, this)); |
|
1337 |
} |
|
1338 |
||
1339 |
protected: |
|
1340 |
USHORT format; |
|
48274 | 1341 |
LOffsetTo<VarRegionList> regions; |
43232 | 1342 |
OffsetArrayOf<VarData, ULONG> dataSets; |
1343 |
public: |
|
1344 |
DEFINE_SIZE_ARRAY (8, dataSets); |
|
1345 |
}; |
|
1346 |
||
1347 |
/* |
|
1348 |
* Feature Variations |
|
1349 |
*/ |
|
1350 |
||
1351 |
struct ConditionFormat1 |
|
1352 |
{ |
|
1353 |
friend struct Condition; |
|
1354 |
||
1355 |
private: |
|
1356 |
inline bool evaluate (const int *coords, unsigned int coord_len) const |
|
1357 |
{ |
|
1358 |
int coord = axisIndex < coord_len ? coords[axisIndex] : 0; |
|
1359 |
return filterRangeMinValue <= coord && coord <= filterRangeMaxValue; |
|
1360 |
} |
|
1361 |
||
1362 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1363 |
{ |
|
1364 |
TRACE_SANITIZE (this); |
|
1365 |
return_trace (c->check_struct (this)); |
|
1366 |
} |
|
1367 |
||
1368 |
protected: |
|
1369 |
USHORT format; /* Format identifier--format = 1 */ |
|
1370 |
USHORT axisIndex; |
|
1371 |
F2DOT14 filterRangeMinValue; |
|
1372 |
F2DOT14 filterRangeMaxValue; |
|
1373 |
public: |
|
1374 |
DEFINE_SIZE_STATIC (8); |
|
1375 |
}; |
|
1376 |
||
1377 |
struct Condition |
|
1378 |
{ |
|
1379 |
inline bool evaluate (const int *coords, unsigned int coord_len) const |
|
1380 |
{ |
|
1381 |
switch (u.format) { |
|
1382 |
case 1: return u.format1.evaluate (coords, coord_len); |
|
1383 |
default:return false; |
|
1384 |
} |
|
1385 |
} |
|
1386 |
||
1387 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1388 |
{ |
|
1389 |
TRACE_SANITIZE (this); |
|
1390 |
if (!u.format.sanitize (c)) return_trace (false); |
|
1391 |
switch (u.format) { |
|
1392 |
case 1: return_trace (u.format1.sanitize (c)); |
|
1393 |
default:return_trace (true); |
|
1394 |
} |
|
1395 |
} |
|
1396 |
||
1397 |
protected: |
|
1398 |
union { |
|
1399 |
USHORT format; /* Format identifier */ |
|
1400 |
ConditionFormat1 format1; |
|
1401 |
} u; |
|
1402 |
public: |
|
1403 |
DEFINE_SIZE_UNION (2, format); |
|
1404 |
}; |
|
1405 |
||
1406 |
struct ConditionSet |
|
1407 |
{ |
|
1408 |
inline bool evaluate (const int *coords, unsigned int coord_len) const |
|
1409 |
{ |
|
1410 |
unsigned int count = conditions.len; |
|
1411 |
for (unsigned int i = 0; i < count; i++) |
|
1412 |
if (!(this+conditions.array[i]).evaluate (coords, coord_len)) |
|
1413 |
return false; |
|
1414 |
return true; |
|
1415 |
} |
|
1416 |
||
1417 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1418 |
{ |
|
1419 |
TRACE_SANITIZE (this); |
|
1420 |
return_trace (conditions.sanitize (c, this)); |
|
1421 |
} |
|
1422 |
||
1423 |
protected: |
|
1424 |
OffsetArrayOf<Condition, ULONG> conditions; |
|
1425 |
public: |
|
1426 |
DEFINE_SIZE_ARRAY (2, conditions); |
|
1427 |
}; |
|
1428 |
||
1429 |
struct FeatureTableSubstitutionRecord |
|
1430 |
{ |
|
1431 |
friend struct FeatureTableSubstitution; |
|
1432 |
||
1433 |
inline bool sanitize (hb_sanitize_context_t *c, const void *base) const |
|
1434 |
{ |
|
1435 |
TRACE_SANITIZE (this); |
|
1436 |
return_trace (c->check_struct (this) && feature.sanitize (c, base)); |
|
1437 |
} |
|
1438 |
||
1439 |
protected: |
|
48274 | 1440 |
USHORT featureIndex; |
1441 |
LOffsetTo<Feature> feature; |
|
43232 | 1442 |
public: |
1443 |
DEFINE_SIZE_STATIC (6); |
|
1444 |
}; |
|
1445 |
||
1446 |
struct FeatureTableSubstitution |
|
1447 |
{ |
|
1448 |
inline const Feature *find_substitute (unsigned int feature_index) const |
|
1449 |
{ |
|
1450 |
unsigned int count = substitutions.len; |
|
1451 |
for (unsigned int i = 0; i < count; i++) |
|
1452 |
{ |
|
1453 |
const FeatureTableSubstitutionRecord &record = substitutions.array[i]; |
|
1454 |
if (record.featureIndex == feature_index) |
|
1455 |
return &(this+record.feature); |
|
1456 |
} |
|
48274 | 1457 |
return nullptr; |
43232 | 1458 |
} |
1459 |
||
1460 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1461 |
{ |
|
1462 |
TRACE_SANITIZE (this); |
|
1463 |
return_trace (version.sanitize (c) && |
|
1464 |
likely (version.major == 1) && |
|
1465 |
substitutions.sanitize (c, this)); |
|
1466 |
} |
|
1467 |
||
1468 |
protected: |
|
1469 |
FixedVersion<> version; /* Version--0x00010000u */ |
|
1470 |
ArrayOf<FeatureTableSubstitutionRecord> |
|
1471 |
substitutions; |
|
1472 |
public: |
|
1473 |
DEFINE_SIZE_ARRAY (6, substitutions); |
|
1474 |
}; |
|
1475 |
||
1476 |
struct FeatureVariationRecord |
|
1477 |
{ |
|
1478 |
friend struct FeatureVariations; |
|
1479 |
||
1480 |
inline bool sanitize (hb_sanitize_context_t *c, const void *base) const |
|
1481 |
{ |
|
1482 |
TRACE_SANITIZE (this); |
|
1483 |
return_trace (conditions.sanitize (c, base) && |
|
1484 |
substitutions.sanitize (c, base)); |
|
1485 |
} |
|
1486 |
||
1487 |
protected: |
|
48274 | 1488 |
LOffsetTo<ConditionSet> |
43232 | 1489 |
conditions; |
48274 | 1490 |
LOffsetTo<FeatureTableSubstitution> |
43232 | 1491 |
substitutions; |
1492 |
public: |
|
1493 |
DEFINE_SIZE_STATIC (8); |
|
1494 |
}; |
|
1495 |
||
1496 |
struct FeatureVariations |
|
1497 |
{ |
|
1498 |
static const unsigned int NOT_FOUND_INDEX = 0xFFFFFFFFu; |
|
1499 |
||
1500 |
inline bool find_index (const int *coords, unsigned int coord_len, |
|
1501 |
unsigned int *index) const |
|
1502 |
{ |
|
1503 |
unsigned int count = varRecords.len; |
|
1504 |
for (unsigned int i = 0; i < count; i++) |
|
1505 |
{ |
|
1506 |
const FeatureVariationRecord &record = varRecords.array[i]; |
|
1507 |
if ((this+record.conditions).evaluate (coords, coord_len)) |
|
1508 |
{ |
|
1509 |
*index = i; |
|
1510 |
return true; |
|
1511 |
} |
|
1512 |
} |
|
1513 |
*index = NOT_FOUND_INDEX; |
|
1514 |
return false; |
|
1515 |
} |
|
1516 |
||
1517 |
inline const Feature *find_substitute (unsigned int variations_index, |
|
1518 |
unsigned int feature_index) const |
|
1519 |
{ |
|
1520 |
const FeatureVariationRecord &record = varRecords[variations_index]; |
|
1521 |
return (this+record.substitutions).find_substitute (feature_index); |
|
1522 |
} |
|
1523 |
||
1524 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1525 |
{ |
|
1526 |
TRACE_SANITIZE (this); |
|
1527 |
return_trace (version.sanitize (c) && |
|
1528 |
likely (version.major == 1) && |
|
1529 |
varRecords.sanitize (c, this)); |
|
1530 |
} |
|
1531 |
||
1532 |
protected: |
|
1533 |
FixedVersion<> version; /* Version--0x00010000u */ |
|
48274 | 1534 |
LArrayOf<FeatureVariationRecord> |
43232 | 1535 |
varRecords; |
1536 |
public: |
|
1537 |
DEFINE_SIZE_ARRAY (8, varRecords); |
|
1538 |
}; |
|
1539 |
||
1540 |
||
1541 |
/* |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1542 |
* Device Tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1543 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1544 |
|
43232 | 1545 |
struct HintingDevice |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1546 |
{ |
43232 | 1547 |
friend struct Device; |
1548 |
||
1549 |
private: |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1550 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1551 |
inline hb_position_t get_x_delta (hb_font_t *font) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1552 |
{ return get_delta (font->x_ppem, font->x_scale); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1553 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1554 |
inline hb_position_t get_y_delta (hb_font_t *font) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1555 |
{ return get_delta (font->y_ppem, font->y_scale); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1556 |
|
40435 | 1557 |
inline unsigned int get_size (void) const |
1558 |
{ |
|
1559 |
unsigned int f = deltaFormat; |
|
1560 |
if (unlikely (f < 1 || f > 3 || startSize > endSize)) return 3 * USHORT::static_size; |
|
1561 |
return USHORT::static_size * (4 + ((endSize - startSize) >> (4 - f))); |
|
1562 |
} |
|
1563 |
||
1564 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1565 |
{ |
|
1566 |
TRACE_SANITIZE (this); |
|
1567 |
return_trace (c->check_struct (this) && c->check_range (this, this->get_size ())); |
|
1568 |
} |
|
1569 |
||
1570 |
private: |
|
1571 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1572 |
inline int get_delta (unsigned int ppem, int scale) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1573 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1574 |
if (!ppem) return 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1575 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1576 |
int pixels = get_delta_pixels (ppem); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1577 |
|
e496a8d8fc8a
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parents:
diff
changeset
|
1578 |
if (!pixels) return 0; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1579 |
|
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prr
parents:
diff
changeset
|
1580 |
return (int) (pixels * (int64_t) scale / ppem); |
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parents:
diff
changeset
|
1581 |
} |
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prr
parents:
diff
changeset
|
1582 |
inline int get_delta_pixels (unsigned int ppem_size) const |
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prr
parents:
diff
changeset
|
1583 |
{ |
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prr
parents:
diff
changeset
|
1584 |
unsigned int f = deltaFormat; |
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prr
parents:
diff
changeset
|
1585 |
if (unlikely (f < 1 || f > 3)) |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1586 |
return 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1587 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1588 |
if (ppem_size < startSize || ppem_size > endSize) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1589 |
return 0; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1590 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1591 |
unsigned int s = ppem_size - startSize; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1592 |
|
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1593 |
unsigned int byte = deltaValue[s >> (4 - f)]; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
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parents:
diff
changeset
|
1594 |
unsigned int bits = (byte >> (16 - (((s & ((1 << (4 - f)) - 1)) + 1) << f))); |
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parents:
diff
changeset
|
1595 |
unsigned int mask = (0xFFFFu >> (16 - (1 << f))); |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1596 |
|
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prr
parents:
diff
changeset
|
1597 |
int delta = bits & mask; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1598 |
|
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prr
parents:
diff
changeset
|
1599 |
if ((unsigned int) delta >= ((mask + 1) >> 1)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1600 |
delta -= mask + 1; |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1601 |
|
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parents:
diff
changeset
|
1602 |
return delta; |
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parents:
diff
changeset
|
1603 |
} |
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prr
parents:
diff
changeset
|
1604 |
|
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parents:
diff
changeset
|
1605 |
protected: |
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parents:
diff
changeset
|
1606 |
USHORT startSize; /* Smallest size to correct--in ppem */ |
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parents:
diff
changeset
|
1607 |
USHORT endSize; /* Largest size to correct--in ppem */ |
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parents:
diff
changeset
|
1608 |
USHORT deltaFormat; /* Format of DeltaValue array data: 1, 2, or 3 |
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parents:
diff
changeset
|
1609 |
* 1 Signed 2-bit value, 8 values per uint16 |
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prr
parents:
diff
changeset
|
1610 |
* 2 Signed 4-bit value, 4 values per uint16 |
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parents:
diff
changeset
|
1611 |
* 3 Signed 8-bit value, 2 values per uint16 |
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parents:
diff
changeset
|
1612 |
*/ |
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parents:
diff
changeset
|
1613 |
USHORT deltaValue[VAR]; /* Array of compressed data */ |
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parents:
diff
changeset
|
1614 |
public: |
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parents:
diff
changeset
|
1615 |
DEFINE_SIZE_ARRAY (6, deltaValue); |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
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parents:
diff
changeset
|
1616 |
}; |
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parents:
diff
changeset
|
1617 |
|
43232 | 1618 |
struct VariationDevice |
1619 |
{ |
|
1620 |
friend struct Device; |
|
1621 |
||
1622 |
private: |
|
1623 |
||
1624 |
inline hb_position_t get_x_delta (hb_font_t *font, const VariationStore &store) const |
|
1625 |
{ return font->em_scalef_x (get_delta (font, store)); } |
|
1626 |
||
1627 |
inline hb_position_t get_y_delta (hb_font_t *font, const VariationStore &store) const |
|
1628 |
{ return font->em_scalef_y (get_delta (font, store)); } |
|
1629 |
||
1630 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1631 |
{ |
|
1632 |
TRACE_SANITIZE (this); |
|
1633 |
return_trace (c->check_struct (this)); |
|
1634 |
} |
|
1635 |
||
1636 |
private: |
|
1637 |
||
1638 |
inline float get_delta (hb_font_t *font, const VariationStore &store) const |
|
1639 |
{ |
|
1640 |
return store.get_delta (outerIndex, innerIndex, font->coords, font->num_coords); |
|
1641 |
} |
|
1642 |
||
1643 |
protected: |
|
1644 |
USHORT outerIndex; |
|
1645 |
USHORT innerIndex; |
|
1646 |
USHORT deltaFormat; /* Format identifier for this table: 0x0x8000 */ |
|
1647 |
public: |
|
1648 |
DEFINE_SIZE_STATIC (6); |
|
1649 |
}; |
|
1650 |
||
1651 |
struct DeviceHeader |
|
1652 |
{ |
|
1653 |
protected: |
|
1654 |
USHORT reserved1; |
|
1655 |
USHORT reserved2; |
|
1656 |
public: |
|
1657 |
USHORT format; /* Format identifier */ |
|
1658 |
public: |
|
1659 |
DEFINE_SIZE_STATIC (6); |
|
1660 |
}; |
|
1661 |
||
1662 |
struct Device |
|
1663 |
{ |
|
1664 |
inline hb_position_t get_x_delta (hb_font_t *font, const VariationStore &store=Null(VariationStore)) const |
|
1665 |
{ |
|
1666 |
switch (u.b.format) |
|
1667 |
{ |
|
1668 |
case 1: case 2: case 3: |
|
1669 |
return u.hinting.get_x_delta (font); |
|
1670 |
case 0x8000: |
|
1671 |
return u.variation.get_x_delta (font, store); |
|
1672 |
default: |
|
1673 |
return 0; |
|
1674 |
} |
|
1675 |
} |
|
1676 |
inline hb_position_t get_y_delta (hb_font_t *font, const VariationStore &store=Null(VariationStore)) const |
|
1677 |
{ |
|
1678 |
switch (u.b.format) |
|
1679 |
{ |
|
1680 |
case 1: case 2: case 3: |
|
1681 |
return u.hinting.get_y_delta (font); |
|
1682 |
case 0x8000: |
|
1683 |
return u.variation.get_y_delta (font, store); |
|
1684 |
default: |
|
1685 |
return 0; |
|
1686 |
} |
|
1687 |
} |
|
1688 |
||
1689 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1690 |
{ |
|
1691 |
TRACE_SANITIZE (this); |
|
1692 |
if (!u.b.format.sanitize (c)) return_trace (false); |
|
1693 |
switch (u.b.format) { |
|
1694 |
case 1: case 2: case 3: |
|
1695 |
return_trace (u.hinting.sanitize (c)); |
|
1696 |
case 0x8000: |
|
1697 |
return_trace (u.variation.sanitize (c)); |
|
1698 |
default: |
|
1699 |
return_trace (true); |
|
1700 |
} |
|
1701 |
} |
|
1702 |
||
1703 |
protected: |
|
1704 |
union { |
|
1705 |
DeviceHeader b; |
|
1706 |
HintingDevice hinting; |
|
1707 |
VariationDevice variation; |
|
1708 |
} u; |
|
1709 |
public: |
|
1710 |
DEFINE_SIZE_UNION (6, b); |
|
1711 |
}; |
|
1712 |
||
34414
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
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parents:
diff
changeset
|
1713 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1714 |
} /* namespace OT */ |
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8143177: Integrate harfbuzz opentype layout engine per JEP 258
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parents:
diff
changeset
|
1715 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1716 |
|
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parents:
diff
changeset
|
1717 |
#endif /* HB_OT_LAYOUT_COMMON_PRIVATE_HH */ |