122 HB_INTERNAL inline void apply (const Proxy &proxy,
123 const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
124 HB_INTERNAL void substitute (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
125 HB_INTERNAL void position (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
126
127 inline void finish (void) {
128 features.finish ();
129 for (unsigned int table_index = 0; table_index < 2; table_index++)
130 {
131 lookups[table_index].finish ();
132 stages[table_index].finish ();
133 }
134 }
135
136 public:
137 hb_tag_t chosen_script[2];
138 bool found_script[2];
139
140 private:
141
142 HB_INTERNAL void add_lookups (hb_face_t *face,
143 unsigned int table_index,
144 unsigned int feature_index,
145 hb_mask_t mask,
146 bool auto_zwj);
147
148 hb_mask_t global_mask;
149
150 hb_prealloced_array_t<feature_map_t, 8> features;
151 hb_prealloced_array_t<lookup_map_t, 32> lookups[2]; /* GSUB/GPOS */
152 hb_prealloced_array_t<stage_map_t, 4> stages[2]; /* GSUB/GPOS */
153 };
154
155 enum hb_ot_map_feature_flags_t {
156 F_NONE = 0x0000u,
157 F_GLOBAL = 0x0001u, /* Feature applies to all characters; results in no mask allocated for it. */
158 F_HAS_FALLBACK = 0x0002u, /* Has fallback implementation, so include mask bit even if feature not found. */
159 F_MANUAL_ZWJ = 0x0004u, /* Don't skip over ZWJ when matching. */
160 F_GLOBAL_SEARCH = 0x0008u /* If feature not found in LangSys, look for it in global feature list and pick one. */
161 };
162 HB_MARK_AS_FLAG_T (hb_ot_map_feature_flags_t);
163 /* Macro version for where const is desired. */
164 #define F_COMBINE(l,r) (hb_ot_map_feature_flags_t ((unsigned int) (l) | (unsigned int) (r)))
165
166
167 struct hb_ot_map_builder_t
168 {
169 public:
170
171 HB_INTERNAL hb_ot_map_builder_t (hb_face_t *face_,
172 const hb_segment_properties_t *props_);
173
174 HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value,
175 hb_ot_map_feature_flags_t flags);
176
177 inline void add_global_bool_feature (hb_tag_t tag)
178 { add_feature (tag, 1, F_GLOBAL); }
179
180 inline void add_gsub_pause (hb_ot_map_t::pause_func_t pause_func)
181 { add_pause (0, pause_func); }
182 inline void add_gpos_pause (hb_ot_map_t::pause_func_t pause_func)
183 { add_pause (1, pause_func); }
184
185 HB_INTERNAL void compile (struct hb_ot_map_t &m);
186
187 inline void finish (void) {
188 feature_infos.finish ();
189 for (unsigned int table_index = 0; table_index < 2; table_index++)
190 {
191 stages[table_index].finish ();
192 }
193 }
194
195 private:
196
197 struct feature_info_t {
198 hb_tag_t tag;
199 unsigned int seq; /* sequence#, used for stable sorting only */
200 unsigned int max_value;
201 hb_ot_map_feature_flags_t flags;
202 unsigned int default_value; /* for non-global features, what should the unset glyphs take */
203 unsigned int stage[2]; /* GSUB/GPOS */
204
205 static int cmp (const feature_info_t *a, const feature_info_t *b)
206 { return (a->tag != b->tag) ? (a->tag < b->tag ? -1 : 1) :
207 (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0); }
208 };
209
210 struct stage_info_t {
211 unsigned int index;
212 hb_ot_map_t::pause_func_t pause_func;
213 };
214
215 HB_INTERNAL void add_pause (unsigned int table_index, hb_ot_map_t::pause_func_t pause_func);
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122 HB_INTERNAL inline void apply (const Proxy &proxy,
123 const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
124 HB_INTERNAL void substitute (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
125 HB_INTERNAL void position (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
126
127 inline void finish (void) {
128 features.finish ();
129 for (unsigned int table_index = 0; table_index < 2; table_index++)
130 {
131 lookups[table_index].finish ();
132 stages[table_index].finish ();
133 }
134 }
135
136 public:
137 hb_tag_t chosen_script[2];
138 bool found_script[2];
139
140 private:
141
142 hb_mask_t global_mask;
143
144 hb_prealloced_array_t<feature_map_t, 8> features;
145 hb_prealloced_array_t<lookup_map_t, 32> lookups[2]; /* GSUB/GPOS */
146 hb_prealloced_array_t<stage_map_t, 4> stages[2]; /* GSUB/GPOS */
147 };
148
149 enum hb_ot_map_feature_flags_t {
150 F_NONE = 0x0000u,
151 F_GLOBAL = 0x0001u, /* Feature applies to all characters; results in no mask allocated for it. */
152 F_HAS_FALLBACK = 0x0002u, /* Has fallback implementation, so include mask bit even if feature not found. */
153 F_MANUAL_ZWJ = 0x0004u, /* Don't skip over ZWJ when matching. */
154 F_GLOBAL_SEARCH = 0x0008u /* If feature not found in LangSys, look for it in global feature list and pick one. */
155 };
156 HB_MARK_AS_FLAG_T (hb_ot_map_feature_flags_t);
157 /* Macro version for where const is desired. */
158 #define F_COMBINE(l,r) (hb_ot_map_feature_flags_t ((unsigned int) (l) | (unsigned int) (r)))
159
160
161 struct hb_ot_map_builder_t
162 {
163 public:
164
165 HB_INTERNAL hb_ot_map_builder_t (hb_face_t *face_,
166 const hb_segment_properties_t *props_);
167
168 HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value,
169 hb_ot_map_feature_flags_t flags);
170
171 inline void add_global_bool_feature (hb_tag_t tag)
172 { add_feature (tag, 1, F_GLOBAL); }
173
174 inline void add_gsub_pause (hb_ot_map_t::pause_func_t pause_func)
175 { add_pause (0, pause_func); }
176 inline void add_gpos_pause (hb_ot_map_t::pause_func_t pause_func)
177 { add_pause (1, pause_func); }
178
179 HB_INTERNAL void compile (hb_ot_map_t &m,
180 const int *coords,
181 unsigned int num_coords);
182
183 inline void finish (void) {
184 feature_infos.finish ();
185 for (unsigned int table_index = 0; table_index < 2; table_index++)
186 {
187 stages[table_index].finish ();
188 }
189 }
190
191 private:
192
193 HB_INTERNAL void add_lookups (hb_ot_map_t &m,
194 hb_face_t *face,
195 unsigned int table_index,
196 unsigned int feature_index,
197 unsigned int variations_index,
198 hb_mask_t mask,
199 bool auto_zwj);
200
201 struct feature_info_t {
202 hb_tag_t tag;
203 unsigned int seq; /* sequence#, used for stable sorting only */
204 unsigned int max_value;
205 hb_ot_map_feature_flags_t flags;
206 unsigned int default_value; /* for non-global features, what should the unset glyphs take */
207 unsigned int stage[2]; /* GSUB/GPOS */
208
209 static int cmp (const feature_info_t *a, const feature_info_t *b)
210 { return (a->tag != b->tag) ? (a->tag < b->tag ? -1 : 1) :
211 (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0); }
212 };
213
214 struct stage_info_t {
215 unsigned int index;
216 hb_ot_map_t::pause_func_t pause_func;
217 };
218
219 HB_INTERNAL void add_pause (unsigned int table_index, hb_ot_map_t::pause_func_t pause_func);
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