/*
* Copyright © 2009,2010 Red Hat, Inc.
- * Copyright © 2010,2011,2012 Google, Inc.
+ * Copyright © 2010,2011,2012,2013 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
#include "hb-buffer-private.hh"
-#include "hb-ot-layout-private.hh"
+struct hb_ot_shape_plan_t;
static const hb_tag_t table_tags[2] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS};
unsigned int shift;
hb_mask_t mask;
hb_mask_t _1_mask; /* mask for value=1, for quick access */
- hb_bool_t needs_fallback;
+ unsigned int needs_fallback : 1;
+ unsigned int auto_zwnj : 1;
+ unsigned int auto_zwj : 1;
- static int cmp (const feature_map_t *a, const feature_map_t *b)
- { return a->tag < b->tag ? -1 : a->tag > b->tag ? 1 : 0; }
+ inline int cmp (const hb_tag_t *tag_) const
+ { return *tag_ < tag ? -1 : *tag_ > tag ? 1 : 0; }
};
struct lookup_map_t {
- unsigned int index;
+ unsigned short index;
+ unsigned short auto_zwnj : 1;
+ unsigned short auto_zwj : 1;
hb_mask_t mask;
- static int cmp (const lookup_map_t *a, const lookup_map_t *b)
- { return a->index < b->index ? -1 : a->index > b->index ? 1 : 0; }
+ static int cmp (const void *pa, const void *pb)
+ {
+ const lookup_map_t *a = (const lookup_map_t *) pa;
+ const lookup_map_t *b = (const lookup_map_t *) pb;
+ return a->index < b->index ? -1 : a->index > b->index ? 1 : 0;
+ }
};
typedef void (*pause_func_t) (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer);
- struct pause_map_t {
- unsigned int num_lookups; /* Cumulative */
- pause_func_t callback;
+ struct stage_map_t {
+ unsigned int last_lookup; /* Cumulative */
+ pause_func_t pause_func;
};
inline hb_mask_t get_global_mask (void) const { return global_mask; }
- inline hb_mask_t get_mask (hb_tag_t feature_tag, unsigned int *shift = NULL) const {
- const feature_map_t *map = features.bsearch (&feature_tag);
+ inline hb_mask_t get_mask (hb_tag_t feature_tag, unsigned int *shift = nullptr) const {
+ const feature_map_t *map = features.bsearch (feature_tag);
if (shift) *shift = map ? map->shift : 0;
return map ? map->mask : 0;
}
inline bool needs_fallback (hb_tag_t feature_tag) const {
- const feature_map_t *map = features.bsearch (&feature_tag);
+ const feature_map_t *map = features.bsearch (feature_tag);
return map ? map->needs_fallback : false;
}
inline hb_mask_t get_1_mask (hb_tag_t feature_tag) const {
- const feature_map_t *map = features.bsearch (&feature_tag);
+ const feature_map_t *map = features.bsearch (feature_tag);
return map ? map->_1_mask : 0;
}
inline unsigned int get_feature_index (unsigned int table_index, hb_tag_t feature_tag) const {
- const feature_map_t *map = features.bsearch (&feature_tag);
+ const feature_map_t *map = features.bsearch (feature_tag);
return map ? map->index[table_index] : HB_OT_LAYOUT_NO_FEATURE_INDEX;
}
inline unsigned int get_feature_stage (unsigned int table_index, hb_tag_t feature_tag) const {
- const feature_map_t *map = features.bsearch (&feature_tag);
+ const feature_map_t *map = features.bsearch (feature_tag);
return map ? map->stage[table_index] : (unsigned int) -1;
}
inline void get_stage_lookups (unsigned int table_index, unsigned int stage,
const struct lookup_map_t **plookups, unsigned int *lookup_count) const {
if (unlikely (stage == (unsigned int) -1)) {
- *plookups = NULL;
+ *plookups = nullptr;
*lookup_count = 0;
return;
}
- assert (stage <= pauses[table_index].len);
- unsigned int start = stage ? pauses[table_index][stage - 1].num_lookups : 0;
- unsigned int end = stage < pauses[table_index].len ? pauses[table_index][stage].num_lookups : lookups[table_index].len;
- *plookups = &lookups[table_index][start];
+ assert (stage <= stages[table_index].len);
+ unsigned int start = stage ? stages[table_index][stage - 1].last_lookup : 0;
+ unsigned int end = stage < stages[table_index].len ? stages[table_index][stage].last_lookup : lookups[table_index].len;
+ *plookups = end == start ? nullptr : &lookups[table_index][start];
*lookup_count = end - start;
}
HB_INTERNAL void collect_lookups (unsigned int table_index, hb_set_t *lookups) const;
+ template <typename Proxy>
+ HB_INTERNAL inline void apply (const Proxy &proxy,
+ const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
HB_INTERNAL void substitute (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
HB_INTERNAL void position (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const;
inline void finish (void) {
features.finish ();
- lookups[0].finish ();
- lookups[1].finish ();
- pauses[0].finish ();
- pauses[1].finish ();
+ for (unsigned int table_index = 0; table_index < 2; table_index++)
+ {
+ lookups[table_index].finish ();
+ stages[table_index].finish ();
+ }
}
public:
private:
- HB_INTERNAL void add_lookups (hb_face_t *face,
- unsigned int table_index,
- unsigned int feature_index,
- hb_mask_t mask);
-
hb_mask_t global_mask;
hb_prealloced_array_t<feature_map_t, 8> features;
hb_prealloced_array_t<lookup_map_t, 32> lookups[2]; /* GSUB/GPOS */
- hb_prealloced_array_t<pause_map_t, 1> pauses[2]; /* GSUB/GPOS */
+ hb_prealloced_array_t<stage_map_t, 4> stages[2]; /* GSUB/GPOS */
+};
+
+enum hb_ot_map_feature_flags_t {
+ F_NONE = 0x0000u,
+ F_GLOBAL = 0x0001u, /* Feature applies to all characters; results in no mask allocated for it. */
+ F_HAS_FALLBACK = 0x0002u, /* Has fallback implementation, so include mask bit even if feature not found. */
+ F_MANUAL_ZWNJ = 0x0004u, /* Don't skip over ZWNJ when matching **context**. */
+ F_MANUAL_ZWJ = 0x0008u, /* Don't skip over ZWJ when matching **input**. */
+ F_GLOBAL_SEARCH = 0x0010u /* If feature not found in LangSys, look for it in global feature list and pick one. */
};
+HB_MARK_AS_FLAG_T (hb_ot_map_feature_flags_t);
+/* Macro version for where const is desired. */
+#define F_COMBINE(l,r) (hb_ot_map_feature_flags_t ((unsigned int) (l) | (unsigned int) (r)))
struct hb_ot_map_builder_t
HB_INTERNAL hb_ot_map_builder_t (hb_face_t *face_,
const hb_segment_properties_t *props_);
- HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value, bool global, bool has_fallback = false);
+ HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value,
+ hb_ot_map_feature_flags_t flags);
- inline void add_bool_feature (hb_tag_t tag, bool global = true, bool has_fallback = false)
- { add_feature (tag, 1, global, has_fallback); }
+ inline void add_global_bool_feature (hb_tag_t tag)
+ { add_feature (tag, 1, F_GLOBAL); }
inline void add_gsub_pause (hb_ot_map_t::pause_func_t pause_func)
{ add_pause (0, pause_func); }
inline void add_gpos_pause (hb_ot_map_t::pause_func_t pause_func)
{ add_pause (1, pause_func); }
- HB_INTERNAL void compile (struct hb_ot_map_t &m);
+ HB_INTERNAL void compile (hb_ot_map_t &m,
+ const int *coords,
+ unsigned int num_coords);
inline void finish (void) {
feature_infos.finish ();
- pauses[0].finish ();
- pauses[1].finish ();
+ for (unsigned int table_index = 0; table_index < 2; table_index++)
+ {
+ stages[table_index].finish ();
+ }
}
private:
+ HB_INTERNAL void add_lookups (hb_ot_map_t &m,
+ unsigned int table_index,
+ unsigned int feature_index,
+ unsigned int variations_index,
+ hb_mask_t mask,
+ bool auto_zwnj = true,
+ bool auto_zwj = true);
+
struct feature_info_t {
hb_tag_t tag;
unsigned int seq; /* sequence#, used for stable sorting only */
unsigned int max_value;
- bool global; /* whether the feature applies value to every glyph in the buffer */
- bool has_fallback; /* whether to allocate bits even if feature not found */
+ hb_ot_map_feature_flags_t flags;
unsigned int default_value; /* for non-global features, what should the unset glyphs take */
unsigned int stage[2]; /* GSUB/GPOS */
- static int cmp (const feature_info_t *a, const feature_info_t *b)
- { return (a->tag != b->tag) ? (a->tag < b->tag ? -1 : 1) : (a->seq < b->seq ? -1 : 1); }
+ static int cmp (const void *pa, const void *pb)
+ {
+ const feature_info_t *a = (const feature_info_t *) pa;
+ const feature_info_t *b = (const feature_info_t *) pb;
+ return (a->tag != b->tag) ? (a->tag < b->tag ? -1 : 1) :
+ (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0);
+ }
};
- struct pause_info_t {
- unsigned int stage;
- hb_ot_map_t::pause_func_t callback;
+ struct stage_info_t {
+ unsigned int index;
+ hb_ot_map_t::pause_func_t pause_func;
};
HB_INTERNAL void add_pause (unsigned int table_index, hb_ot_map_t::pause_func_t pause_func);
private:
unsigned int current_stage[2]; /* GSUB/GPOS */
- hb_prealloced_array_t<feature_info_t,16> feature_infos;
- hb_prealloced_array_t<pause_info_t, 1> pauses[2]; /* GSUB/GPOS */
+ hb_prealloced_array_t<feature_info_t, 32> feature_infos;
+ hb_prealloced_array_t<stage_info_t, 8> stages[2]; /* GSUB/GPOS */
};
projects / platform / upstream / harfbuzz.git / blobdiff