[BASE] Improvements (#1347)
This commit is contained in:
Ebrahim Byagowi
GitHub
parent
c560ca9251
commit
b8a78ce201
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@ -1,6 +1,7 @@
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/*
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* Copyright © 2016 Elie Roux <elie.roux@telecom-bretagne.eu>
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* Copyright © 2018 Google, Inc.
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* Copyright © 2018 Ebrahim Byagowi
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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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@ -31,6 +32,9 @@
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#include "hb-open-type.hh"
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#include "hb-ot-layout-common.hh"
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/* To be removed */
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typedef hb_tag_t hb_ot_layout_baseline_t;
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namespace OT {
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/*
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@ -38,19 +42,14 @@ namespace OT {
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* https://docs.microsoft.com/en-us/typography/opentype/spec/base
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*/
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/* XXX Review this. */
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#define NOT_INDEXED ((unsigned int) -1)
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struct BaseCoordFormat1
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{
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inline int get_coord (void) const { return coordinate; }
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inline hb_position_t get_coord () const { return coordinate; }
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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 (c->check_struct (this));
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return_trace (likely (c->check_struct (this)));
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}
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protected:
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@ -62,7 +61,7 @@ struct BaseCoordFormat1
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struct BaseCoordFormat2
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{
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inline int get_coord (void) const
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inline hb_position_t get_coord () const
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{
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/* TODO */
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return coordinate;
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@ -86,22 +85,29 @@ struct BaseCoordFormat2
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struct BaseCoordFormat3
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{
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inline int get_coord (void) const
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inline hb_position_t get_coord (hb_font_t *font,
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const VariationStore &var_store,
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hb_direction_t direction) const
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{
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/* TODO */
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return coordinate;
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const Device &device = this+deviceTable;
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return coordinate + (HB_DIRECTION_IS_VERTICAL (direction) ?
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device.get_y_delta (font, var_store) :
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device.get_x_delta (font, var_store));
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}
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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 (c->check_struct (this) && deviceTable.sanitize (c, this));
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return_trace (likely (c->check_struct (this) &&
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deviceTable.sanitize (c, this)));
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}
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protected:
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HBUINT16 format; /* Format identifier--format = 3 */
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FWORD coordinate; /* X or Y value, in design units */
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OffsetTo<Device> deviceTable; /* Offset to Device table for X or
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OffsetTo<Device>
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deviceTable; /* Offset to Device table for X or
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* Y value, from beginning of
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* BaseCoord table (may be NULL). */
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public:
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@ -110,13 +116,14 @@ struct BaseCoordFormat3
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struct BaseCoord
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{
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inline int get_coord (void) const
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inline hb_position_t get_coord (hb_font_t *font,
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const VariationStore &var_store,
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hb_direction_t direction) const
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{
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/* XXX wire up direction and font. */
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switch (u.format) {
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case 1: return u.format1.get_coord ();
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case 2: return u.format2.get_coord ();
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case 3: return u.format3.get_coord ();
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case 3: return u.format3.get_coord (font, var_store, direction);
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default:return 0;
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}
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}
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@ -124,7 +131,7 @@ struct BaseCoord
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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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if (!u.format.sanitize (c)) return_trace (false);
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if (unlikely (!u.format.sanitize (c))) return_trace (false);
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switch (u.format) {
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case 1: return_trace (u.format1.sanitize (c));
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case 2: return_trace (u.format2.sanitize (c));
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@ -146,26 +153,38 @@ struct BaseCoord
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struct FeatMinMaxRecord
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{
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inline int get_min_value (void) const { return (this+minCoord).get_coord(); }
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inline int get_max_value (void) const { return (this+maxCoord).get_coord(); }
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static int cmp (const void *key_, const void *entry_)
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{
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hb_tag_t key = * (hb_tag_t *) key_;
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const FeatMinMaxRecord &entry = * (const FeatMinMaxRecord *) entry_;
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return key < (unsigned int) entry.tag ? -1 :
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key > (unsigned int) entry.tag ? 1 :
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0;
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}
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inline const Tag& get_tag () const { return tag; }
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inline void get_min_max (const BaseCoord **min, const BaseCoord **max) const
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{
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if (likely (min)) *min = &(this+minCoord);
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if (likely (max)) *max = &(this+maxCoord);
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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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return_trace (c->check_struct (this) &&
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minCoord.sanitize (c, base) &&
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maxCoord.sanitize (c, base));
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return_trace (likely (c->check_struct (this) &&
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minCoord.sanitize (c, this) &&
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maxCoord.sanitize (c, this)));
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}
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protected:
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Tag tag; /* 4-byte feature identification tag--must
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* match feature tag in FeatureList */
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OffsetTo<BaseCoord> minCoord; /* Offset to BaseCoord table that defines
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OffsetTo<BaseCoord>
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minCoord; /* Offset to BaseCoord table that defines
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* the minimum extent value, from beginning
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* of MinMax table (may be NULL) */
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OffsetTo<BaseCoord> maxCoord; /* Offset to BaseCoord table that defines
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OffsetTo<BaseCoord>
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maxCoord; /* Offset to BaseCoord table that defines
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* the maximum extent value, from beginning
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* of MinMax table (may be NULL) */
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public:
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@ -175,257 +194,202 @@ struct FeatMinMaxRecord
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struct MinMax
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{
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inline unsigned int get_feature_tag_index (Tag featureTableTag) const
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inline void get_min_max (hb_tag_t feature_tag,
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const BaseCoord **min,
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const BaseCoord **max) const
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{
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/* TODO bsearch */
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unsigned int count = featMinMaxRecords.len;
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for (unsigned int i = 0; i < count; i++)
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const FeatMinMaxRecord *minMaxCoord = (const FeatMinMaxRecord *)
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hb_bsearch (&feature_tag, featMinMaxRecords.arrayZ,
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featMinMaxRecords.len,
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FeatMinMaxRecord::static_size,
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FeatMinMaxRecord::cmp);
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if (minMaxCoord)
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minMaxCoord->get_min_max (min, max);
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else
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{
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Tag tag = featMinMaxRecords[i].get_tag ();
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int cmp = tag.cmp(featureTableTag);
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if (cmp == 0) return i;
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if (cmp > 0) return NOT_INDEXED;
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if (likely (min)) *min = &(this+minCoord);
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if (likely (max)) *max = &(this+maxCoord);
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}
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return NOT_INDEXED;
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}
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inline int get_min_value (unsigned int featureTableTagIndex) const
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{
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if (featureTableTagIndex == NOT_INDEXED)
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return (this+minCoord).get_coord();
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return featMinMaxRecords[featureTableTagIndex].get_min_value();
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}
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inline int get_max_value (unsigned int featureTableTagIndex) const
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{
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if (featureTableTagIndex == NOT_INDEXED)
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return (this+maxCoord).get_coord();
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return featMinMaxRecords[featureTableTagIndex].get_max_value();
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}
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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 (c->check_struct (this) &&
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return_trace (likely (c->check_struct (this) &&
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minCoord.sanitize (c, this) &&
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maxCoord.sanitize (c, this) &&
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featMinMaxRecords.sanitize (c, this));
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featMinMaxRecords.sanitize (c, this)));
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}
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protected:
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OffsetTo<BaseCoord> minCoord; /* Offset to BaseCoord table that defines
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OffsetTo<BaseCoord>
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minCoord; /* Offset to BaseCoord table that defines
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* minimum extent value, from the beginning
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* of MinMax table (may be NULL) */
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OffsetTo<BaseCoord> maxCoord; /* Offset to BaseCoord table that defines
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OffsetTo<BaseCoord>
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maxCoord; /* Offset to BaseCoord table that defines
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* maximum extent value, from the beginning
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* of MinMax table (may be NULL) */
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ArrayOf<FeatMinMaxRecord>
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featMinMaxRecords; /* Array of FeatMinMaxRecords, in alphabetical
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featMinMaxRecords;
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/* Array of FeatMinMaxRecords, in alphabetical
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* order by featureTableTag */
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public:
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DEFINE_SIZE_ARRAY (6, featMinMaxRecords);
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};
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/* TODO... */
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struct BaseLangSysRecord
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{
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inline const Tag& get_tag(void) const
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{ return baseLangSysTag; }
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inline unsigned int get_feature_tag_index (Tag featureTableTag) const
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{ return (this+minMax).get_feature_tag_index( featureTableTag); }
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inline int get_min_value (unsigned int featureTableTagIndex) const
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{ return (this+minMax).get_min_value( featureTableTagIndex); }
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inline int get_max_value (unsigned int featureTableTagIndex) const
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{ return (this+minMax).get_max_value (featureTableTagIndex); }
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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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return_trace (c->check_struct (this) &&
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minMax.sanitize (c, base));
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}
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protected:
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Tag baseLangSysTag;
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OffsetTo<MinMax> minMax;
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public:
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DEFINE_SIZE_STATIC (6);
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};
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struct BaseValues
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{
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inline unsigned int get_default_base_tag_index (void) const
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{ return defaultIndex; }
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inline int get_base_coord (unsigned int baselineTagIndex) const
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inline const BaseCoord &get_base_coord (int baseline_tag_index) const
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{
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return (this+baseCoords[baselineTagIndex]).get_coord ();
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if (baseline_tag_index == -1) baseline_tag_index = defaultIndex;
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return this+baseCoords[baseline_tag_index];
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}
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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 (c->check_struct (this) &&
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baseCoords.sanitize (c, this));
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return_trace (likely (c->check_struct (this) &&
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baseCoords.sanitize (c, this)));
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}
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protected:
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Index defaultIndex;
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OffsetArrayOf<BaseCoord> baseCoords;
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Index defaultIndex; /* Index number of default baseline for this
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* script — equals index position of baseline tag
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* in baselineTags array of the BaseTagList */
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OffsetArrayOf<BaseCoord>
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baseCoords; /* Number of BaseCoord tables defined — should equal
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* baseTagCount in the BaseTagList
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*
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* Array of offsets to BaseCoord tables, from beginning of
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* BaseValues table — order matches baselineTags array in
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* the BaseTagList */
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public:
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DEFINE_SIZE_ARRAY (4, baseCoords);
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};
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struct BaseScript {
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inline unsigned int get_lang_tag_index (Tag baseLangSysTag) const
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struct BaseLangSysRecord
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{
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/* XXX bsearch */
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Tag tag;
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int cmp;
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unsigned int count = baseLangSysRecords.len;
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for (unsigned int i = 0; i < count; i++)
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static int cmp (const void *key_, const void *entry_)
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{
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tag = baseLangSysRecords[i].get_tag ();
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// taking advantage of alphabetical order
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cmp = tag.cmp(baseLangSysTag);
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if (cmp == 0) return i;
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if (cmp > 0) return NOT_INDEXED;
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}
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return NOT_INDEXED;
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hb_tag_t key = * (hb_tag_t *) key_;
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const BaseLangSysRecord &entry = * (const BaseLangSysRecord *) entry_;
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return key < (unsigned int) entry.baseLangSysTag ? -1 :
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key > (unsigned int) entry.baseLangSysTag ? 1 :
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0;
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}
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inline unsigned int get_feature_tag_index (unsigned int baseLangSysIndex, Tag featureTableTag) const
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inline const MinMax &get_min_max () const
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{ return this+minMax; }
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inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
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{
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if (baseLangSysIndex == NOT_INDEXED)
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{
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if (unlikely(defaultMinMax)) return NOT_INDEXED;
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return (this+defaultMinMax).get_feature_tag_index (featureTableTag);
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}
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return baseLangSysRecords[baseLangSysIndex].get_feature_tag_index (featureTableTag);
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TRACE_SANITIZE (this);
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return_trace (likely (c->check_struct (this) &&
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minMax.sanitize (c, this)));
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}
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inline int get_min_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
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protected:
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Tag baseLangSysTag; /* 4-byte language system identification tag */
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OffsetTo<MinMax>
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minMax; /* Offset to MinMax table, from beginning
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* of BaseScript table */
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public:
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DEFINE_SIZE_STATIC (6);
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};
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struct BaseScript
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{
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if (baseLangSysIndex == NOT_INDEXED)
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return (this+defaultMinMax).get_min_value (featureTableTagIndex);
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return baseLangSysRecords[baseLangSysIndex].get_max_value (featureTableTagIndex);
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inline const MinMax &get_min_max (hb_tag_t language_tag) const
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{
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const BaseLangSysRecord* record = (const BaseLangSysRecord *)
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hb_bsearch (&language_tag, baseLangSysRecords.arrayZ,
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baseLangSysRecords.len,
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BaseLangSysRecord::static_size,
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BaseLangSysRecord::cmp);
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return record ? record->get_min_max () : this+defaultMinMax;
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}
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inline int get_max_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
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{
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if (baseLangSysIndex == NOT_INDEXED)
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return (this+defaultMinMax).get_min_value (featureTableTagIndex);
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return baseLangSysRecords[baseLangSysIndex].get_max_value (featureTableTagIndex);
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}
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inline const BaseCoord &get_base_coord (int baseline_tag_index) const
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{ return (this+baseValues).get_base_coord (baseline_tag_index); }
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inline unsigned int get_default_base_tag_index (void) const
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{ return (this+baseValues).get_default_base_tag_index (); }
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inline int get_base_coord (unsigned int baselineTagIndex) const
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{ return (this+baseValues).get_base_coord (baselineTagIndex); }
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inline bool is_empty () const
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{ return !baseValues; }
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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 (c->check_struct (this) &&
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return_trace (likely (c->check_struct (this) &&
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baseValues.sanitize (c, this) &&
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defaultMinMax.sanitize (c, this) &&
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baseLangSysRecords.sanitize (c, this));
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baseLangSysRecords.sanitize (c, this)));
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}
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protected:
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OffsetTo<BaseValues> baseValues;
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OffsetTo<MinMax> defaultMinMax;
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ArrayOf<BaseLangSysRecord> baseLangSysRecords;
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OffsetTo<BaseValues>
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baseValues; /* Offset to BaseValues table, from beginning
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* of BaseScript table (may be NULL) */
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OffsetTo<MinMax>
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defaultMinMax; /* Offset to MinMax table, from beginning of
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* BaseScript table (may be NULL) */
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ArrayOf<BaseLangSysRecord>
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baseLangSysRecords;
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/* Number of BaseLangSysRecords
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* defined — may be zero (0) */
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public:
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DEFINE_SIZE_ARRAY (6, baseLangSysRecords);
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};
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struct BaseScriptList;
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struct BaseScriptRecord
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{
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static int cmp (const void *key_, const void *entry_)
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{
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hb_tag_t key = * (hb_tag_t *) key_;
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const BaseScriptRecord &entry = * (const BaseScriptRecord *) entry_;
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return key < (unsigned int) entry.baseScriptTag ? -1 :
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key > (unsigned int) entry.baseScriptTag ? 1 :
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0;
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}
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struct BaseScriptRecord {
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inline const Tag& get_tag (void) const
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{ return baseScriptTag; }
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inline unsigned int get_default_base_tag_index(void) const
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{ return (this+baseScript).get_default_base_tag_index (); }
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inline int get_base_coord(unsigned int baselineTagIndex) const
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{ return (this+baseScript).get_base_coord (baselineTagIndex); }
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inline unsigned int get_lang_tag_index (Tag baseLangSysTag) const
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{ return (this+baseScript).get_lang_tag_index (baseLangSysTag); }
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inline unsigned int get_feature_tag_index (unsigned int baseLangSysIndex, Tag featureTableTag) const
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{ return (this+baseScript).get_feature_tag_index (baseLangSysIndex, featureTableTag); }
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inline int get_max_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
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{ return (this+baseScript).get_max_value (baseLangSysIndex, featureTableTagIndex); }
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inline int get_min_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
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{ return (this+baseScript).get_min_value (baseLangSysIndex, featureTableTagIndex); }
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inline const BaseScript &get_base_script (const BaseScriptList *list) const
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{ return list+baseScript; }
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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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return_trace (c->check_struct (this) &&
|
||||
baseScript.sanitize (c, base));
|
||||
return_trace (likely (c->check_struct (this) &&
|
||||
baseScript.sanitize (c, base)));
|
||||
}
|
||||
|
||||
protected:
|
||||
Tag baseScriptTag;
|
||||
OffsetTo<BaseScript> baseScript;
|
||||
Tag baseScriptTag; /* 4-byte script identification tag */
|
||||
OffsetTo<BaseScript>
|
||||
baseScript; /* Offset to BaseScript table, from beginning
|
||||
* of BaseScriptList */
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_STATIC (6);
|
||||
};
|
||||
|
||||
struct BaseScriptList {
|
||||
|
||||
inline unsigned int get_base_script_index (Tag baseScriptTag) const
|
||||
struct BaseScriptList
|
||||
{
|
||||
/* XXX bsearch? */
|
||||
unsigned int count = baseScriptRecords.len;
|
||||
for (unsigned int i = 0; i < count; i++)
|
||||
if (baseScriptRecords[i].get_tag() == baseScriptTag)
|
||||
return i;
|
||||
return NOT_INDEXED;
|
||||
inline const BaseScriptRecord *find_record (hb_tag_t script) const
|
||||
{
|
||||
return (const BaseScriptRecord *) hb_bsearch (&script, baseScriptRecords.arrayZ,
|
||||
baseScriptRecords.len,
|
||||
BaseScriptRecord::static_size,
|
||||
BaseScriptRecord::cmp);
|
||||
}
|
||||
|
||||
inline unsigned int get_default_base_tag_index (unsigned int baseScriptIndex) const
|
||||
/* TODO: Or client should handle fallback? */
|
||||
inline const BaseScript &get_base_script (hb_tag_t script) const
|
||||
{
|
||||
return baseScriptRecords[baseScriptIndex].get_default_base_tag_index();
|
||||
}
|
||||
const BaseScriptRecord *record = find_record (script);
|
||||
if (!record) record = find_record ((hb_script_t) HB_TAG ('D','F','L','T'));
|
||||
|
||||
inline int get_base_coord(unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
|
||||
{
|
||||
return baseScriptRecords[baseScriptIndex].get_base_coord(baselineTagIndex);
|
||||
}
|
||||
|
||||
inline unsigned int get_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
|
||||
{
|
||||
return baseScriptRecords[baseScriptIndex].get_lang_tag_index(baseLangSysTag);
|
||||
}
|
||||
|
||||
inline unsigned int get_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
|
||||
{
|
||||
return baseScriptRecords[baseScriptIndex].get_feature_tag_index(baseLangSysIndex, featureTableTag);
|
||||
}
|
||||
|
||||
inline int get_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return baseScriptRecords[baseScriptIndex].get_max_value(baseLangSysIndex, featureTableTagIndex);
|
||||
}
|
||||
|
||||
inline int get_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return baseScriptRecords[baseScriptIndex].get_min_value(baseLangSysIndex, featureTableTagIndex);
|
||||
return record ? record->get_base_script (this) : Null (BaseScript);
|
||||
}
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) const
|
||||
|
|
@ -436,86 +400,61 @@ struct BaseScriptList {
|
|||
}
|
||||
|
||||
protected:
|
||||
ArrayOf<BaseScriptRecord> baseScriptRecords;
|
||||
ArrayOf<BaseScriptRecord>
|
||||
baseScriptRecords;
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_ARRAY (2, baseScriptRecords);
|
||||
};
|
||||
|
||||
struct BaseTagList
|
||||
{
|
||||
inline unsigned int get_tag_index (Tag baselineTag) const
|
||||
{
|
||||
/* TODO bsearch? */
|
||||
unsigned int count = baselineTags.len;
|
||||
for (unsigned int i = 0; i < count; i++)
|
||||
if (baselineTags[i] == baselineTag)
|
||||
return i;
|
||||
return NOT_INDEXED;
|
||||
}
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (c->check_struct (this));
|
||||
}
|
||||
|
||||
protected:
|
||||
SortedArrayOf<Tag> baselineTags;
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_ARRAY (2, baselineTags);
|
||||
};
|
||||
|
||||
struct Axis
|
||||
{
|
||||
|
||||
inline unsigned int get_base_tag_index (Tag baselineTag) const
|
||||
inline bool get_baseline (hb_ot_layout_baseline_t baseline,
|
||||
hb_tag_t script_tag,
|
||||
hb_tag_t language_tag,
|
||||
const BaseCoord **coord) const
|
||||
{
|
||||
return (this+baseTagList).get_tag_index(baselineTag);
|
||||
const BaseScript &base_script = (this+baseScriptList).get_base_script (script_tag);
|
||||
if (base_script.is_empty ()) return false;
|
||||
|
||||
if (likely (coord)) *coord = &base_script.get_base_coord ((this+baseTagList).bsearch (baseline));
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
inline unsigned int get_default_base_tag_index_for_script_index (unsigned int baseScriptIndex) const
|
||||
inline bool get_min_max (hb_tag_t script_tag,
|
||||
hb_tag_t language_tag,
|
||||
hb_tag_t feature_tag,
|
||||
const BaseCoord **min_coord,
|
||||
const BaseCoord **max_coord) const
|
||||
{
|
||||
return (this+baseScriptList).get_default_base_tag_index(baseScriptIndex);
|
||||
}
|
||||
const BaseScript &base_script = (this+baseScriptList).get_base_script (script_tag);
|
||||
if (base_script.is_empty ()) return false;
|
||||
|
||||
inline int get_base_coord (unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
|
||||
{
|
||||
return (this+baseScriptList).get_base_coord(baseScriptIndex, baselineTagIndex);
|
||||
}
|
||||
base_script.get_min_max (language_tag).get_min_max (feature_tag, min_coord, max_coord);
|
||||
|
||||
inline unsigned int get_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
|
||||
{
|
||||
return (this+baseScriptList).get_lang_tag_index(baseScriptIndex, baseLangSysTag);
|
||||
}
|
||||
|
||||
inline unsigned int get_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
|
||||
{
|
||||
return (this+baseScriptList).get_feature_tag_index(baseScriptIndex, baseLangSysIndex, featureTableTag);
|
||||
}
|
||||
|
||||
inline int get_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return (this+baseScriptList).get_max_value(baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
|
||||
}
|
||||
|
||||
inline int get_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return (this+baseScriptList).get_min_value(baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
|
||||
return true;
|
||||
}
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (c->check_struct (this) &&
|
||||
baseTagList.sanitize (c, this) &&
|
||||
baseScriptList.sanitize (c, this));
|
||||
return_trace (likely (c->check_struct (this) &&
|
||||
(this+baseTagList).sanitize (c) &&
|
||||
(this+baseScriptList).sanitize (c)));
|
||||
}
|
||||
|
||||
protected:
|
||||
OffsetTo<BaseTagList> baseTagList;
|
||||
OffsetTo<BaseScriptList> baseScriptList;
|
||||
OffsetTo<SortedArrayOf<Tag> >
|
||||
baseTagList; /* Offset to BaseTagList table, from beginning
|
||||
* of Axis table (may be NULL)
|
||||
* Array of 4-byte baseline identification tags — must
|
||||
* be in alphabetical order */
|
||||
OffsetTo<BaseScriptList>
|
||||
baseScriptList; /* Offset to BaseScriptList table, from beginning
|
||||
* of Axis table
|
||||
* Array of BaseScriptRecords, in alphabetical order
|
||||
* by baseScriptTag */
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_STATIC (4);
|
||||
|
|
@ -525,94 +464,65 @@ struct BASE
|
|||
{
|
||||
static const hb_tag_t tableTag = HB_OT_TAG_BASE;
|
||||
|
||||
inline bool has_v_axis(void) { return vAxis != 0; }
|
||||
inline const Axis &get_axis (hb_direction_t direction) const
|
||||
{ return HB_DIRECTION_IS_VERTICAL (direction) ? this+vAxis : this+hAxis; }
|
||||
|
||||
inline bool has_h_axis(void) { return hAxis != 0; }
|
||||
inline const VariationStore &get_var_store () const
|
||||
{ return version.to_int () < 0x00010001u ? Null (VariationStore) : this+varStore; }
|
||||
|
||||
inline unsigned int get_h_base_tag_index (Tag baselineTag) const
|
||||
inline bool get_baseline (hb_font_t *font,
|
||||
hb_ot_layout_baseline_t baseline,
|
||||
hb_direction_t direction,
|
||||
hb_tag_t script_tag,
|
||||
hb_tag_t language_tag,
|
||||
hb_position_t *base) const
|
||||
{
|
||||
return (this+hAxis).get_base_tag_index(baselineTag);
|
||||
const BaseCoord *base_coord;
|
||||
if (!get_axis (direction).get_baseline (baseline, script_tag, language_tag, &base_coord))
|
||||
return false;
|
||||
|
||||
if (likely (base && base_coord)) *base = base_coord->get_coord (font,
|
||||
get_var_store (),
|
||||
direction);
|
||||
return true;
|
||||
}
|
||||
|
||||
inline unsigned int get_h_default_base_tag_index_for_script_index (unsigned int baseScriptIndex) const
|
||||
/* TODO: Expose this separately sometime? */
|
||||
inline bool get_min_max (hb_font_t *font,
|
||||
hb_direction_t direction,
|
||||
hb_tag_t script_tag,
|
||||
hb_tag_t language_tag,
|
||||
hb_tag_t feature_tag,
|
||||
hb_position_t *min,
|
||||
hb_position_t *max)
|
||||
{
|
||||
return (this+hAxis).get_default_base_tag_index_for_script_index(baseScriptIndex);
|
||||
}
|
||||
const BaseCoord *min_coord, *max_coord;
|
||||
if (!get_axis (direction).get_min_max (script_tag, language_tag, feature_tag,
|
||||
&min_coord, &max_coord))
|
||||
return false;
|
||||
|
||||
inline int get_h_base_coord(unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
|
||||
{
|
||||
return (this+hAxis).get_base_coord(baseScriptIndex, baselineTagIndex);
|
||||
}
|
||||
|
||||
inline unsigned int get_v_base_tag_index(Tag baselineTag) const
|
||||
{
|
||||
return (this+vAxis).get_base_tag_index(baselineTag);
|
||||
}
|
||||
|
||||
inline unsigned int get_v_default_base_tag_index_for_script_index (unsigned int baseScriptIndex) const
|
||||
{
|
||||
return (this+vAxis).get_default_base_tag_index_for_script_index(baseScriptIndex);
|
||||
}
|
||||
|
||||
inline int get_v_base_coord(unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
|
||||
{
|
||||
return (this+vAxis).get_base_coord(baseScriptIndex, baselineTagIndex);
|
||||
}
|
||||
|
||||
inline unsigned int get_h_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
|
||||
{
|
||||
return (this+hAxis).get_lang_tag_index (baseScriptIndex, baseLangSysTag);
|
||||
}
|
||||
|
||||
inline unsigned int get_h_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
|
||||
{
|
||||
return (this+hAxis).get_feature_tag_index (baseScriptIndex, baseLangSysIndex, featureTableTag);
|
||||
}
|
||||
|
||||
inline int get_h_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return (this+hAxis).get_max_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
|
||||
}
|
||||
|
||||
inline int get_h_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return (this+hAxis).get_min_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
|
||||
}
|
||||
|
||||
inline unsigned int get_v_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
|
||||
{
|
||||
return (this+vAxis).get_lang_tag_index (baseScriptIndex, baseLangSysTag);
|
||||
}
|
||||
|
||||
inline unsigned int get_v_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
|
||||
{
|
||||
return (this+vAxis).get_feature_tag_index (baseScriptIndex, baseLangSysIndex, featureTableTag);
|
||||
}
|
||||
|
||||
inline int get_v_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return (this+vAxis).get_max_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
|
||||
}
|
||||
|
||||
inline int get_v_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
|
||||
{
|
||||
return (this+vAxis).get_min_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
|
||||
const VariationStore &var_store = get_var_store ();
|
||||
if (likely (min && min_coord)) *min = min_coord->get_coord (font, var_store, direction);
|
||||
if (likely (max && max_coord)) *max = max_coord->get_coord (font, var_store, direction);
|
||||
return true;
|
||||
}
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (c->check_struct (this) &&
|
||||
return_trace (likely (c->check_struct (this) &&
|
||||
likely (version.major == 1) &&
|
||||
hAxis.sanitize (c, this) &&
|
||||
vAxis.sanitize (c, this) &&
|
||||
(version.to_int () < 0x00010001u || varStore.sanitize (c, this)));
|
||||
(version.to_int () < 0x00010001u || varStore.sanitize (c, this))));
|
||||
}
|
||||
|
||||
protected:
|
||||
FixedVersion<> version;
|
||||
OffsetTo<Axis> hAxis;
|
||||
OffsetTo<Axis> vAxis;
|
||||
FixedVersion<>version; /* Version of the BASE table */
|
||||
OffsetTo<Axis>hAxis; /* Offset to horizontal Axis table, from beginning
|
||||
* of BASE table (may be NULL) */
|
||||
OffsetTo<Axis>vAxis; /* Offset to vertical Axis table, from beginning
|
||||
* of BASE table (may be NULL) */
|
||||
LOffsetTo<VariationStore>
|
||||
varStore; /* Offset to the table of Item Variation
|
||||
* Store--from beginning of BASE
|
||||
|
|
|
|||
|
|
@ -37,10 +37,8 @@
|
|||
#include "hb-ot-layout-gdef-table.hh"
|
||||
#include "hb-ot-layout-gsub-table.hh"
|
||||
#include "hb-ot-layout-gpos-table.hh"
|
||||
|
||||
#include "hb-ot-layout-base-table.hh" // Just so we compile them; unused otherwise
|
||||
#include "hb-ot-layout-jstf-table.hh" // Just so we compile them; unused otherwise
|
||||
|
||||
#include "hb-ot-layout-base-table.hh" // Just so we compile it; unused otherwise
|
||||
#include "hb-ot-layout-jstf-table.hh" // Just so we compile it; unused otherwise
|
||||
#include "hb-ot-kern-table.hh"
|
||||
#include "hb-ot-name-table.hh"
|
||||
|
||||
|
|
@ -1425,3 +1423,62 @@ hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c,
|
|||
{
|
||||
apply_string<GSUBProxy> (c, lookup, accel);
|
||||
}
|
||||
|
||||
#if 0
|
||||
static const OT::BASE& _get_base (hb_face_t *face)
|
||||
{
|
||||
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::BASE);
|
||||
return *hb_ot_face_data (face)->BASE;
|
||||
}
|
||||
|
||||
hb_bool_t
|
||||
hb_ot_layout_get_baseline (hb_font_t *font,
|
||||
hb_ot_layout_baseline_t baseline,
|
||||
hb_direction_t direction,
|
||||
hb_tag_t script_tag,
|
||||
hb_tag_t language_tag,
|
||||
hb_position_t *coord /* OUT. May be NULL. */)
|
||||
{
|
||||
const OT::BASE &base = _get_base (font->face);
|
||||
bool result = base.get_baseline (font, baseline, direction, script_tag,
|
||||
language_tag, coord);
|
||||
|
||||
/* TODO: Simulate https://docs.microsoft.com/en-us/typography/opentype/spec/baselinetags#ideographic-em-box */
|
||||
if (!result && coord) *coord = 0;
|
||||
|
||||
if (coord) *coord = font->em_scale_dir (*coord, direction);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/* To be moved to public header */
|
||||
/*
|
||||
* BASE
|
||||
*/
|
||||
|
||||
/**
|
||||
* hb_ot_layout_baseline_t:
|
||||
*
|
||||
* https://docs.microsoft.com/en-us/typography/opentype/spec/baselinetags
|
||||
*
|
||||
* Since: DONTREPLACEME
|
||||
*/
|
||||
typedef enum {
|
||||
HB_OT_LAYOUT_BASELINE_HANG = HB_TAG('h','a','n','g'),
|
||||
HB_OT_LAYOUT_BASELINE_ICFB = HB_TAG('i','c','f','b'),
|
||||
HB_OT_LAYOUT_BASELINE_ICFT = HB_TAG('i','c','f','t'),
|
||||
HB_OT_LAYOUT_BASELINE_IDEO = HB_TAG('i','d','e','o'),
|
||||
HB_OT_LAYOUT_BASELINE_IDTB = HB_TAG('i','d','t','b'),
|
||||
HB_OT_LAYOUT_BASELINE_MATH = HB_TAG('m','a','t','h'),
|
||||
HB_OT_LAYOUT_BASELINE_ROMN = HB_TAG('r','o','m','n')
|
||||
} hb_ot_layout_baseline_t;
|
||||
|
||||
HB_EXTERN hb_bool_t
|
||||
hb_ot_layout_get_baseline (hb_font_t *font,
|
||||
hb_ot_layout_baseline_t baseline,
|
||||
hb_direction_t direction,
|
||||
hb_tag_t script_tag,
|
||||
hb_tag_t language_tag,
|
||||
hb_position_t *coord /* OUT. May be NULL. */);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -391,22 +391,6 @@ hb_ot_layout_feature_get_characters (hb_face_t *face,
|
|||
unsigned int *char_count /* IN/OUT. May be NULL */,
|
||||
hb_codepoint_t *characters /* OUT. May be NULL */);
|
||||
|
||||
/*
|
||||
* BASE
|
||||
*/
|
||||
#if 0
|
||||
|
||||
#define HB_OT_TAG_BASE_HANG HB_TAG('h','a','n','g')
|
||||
#define HB_OT_TAG_BASE_ICFB HB_TAG('i','c','f','b')
|
||||
#define HB_OT_TAG_BASE_ICFT HB_TAG('i','c','f','t')
|
||||
#define HB_OT_TAG_BASE_IDEO HB_TAG('i','d','e','o')
|
||||
#define HB_OT_TAG_BASE_IDTB HB_TAG('i','d','t','b')
|
||||
#define HB_OT_TAG_BASE_MATH HB_TAG('m','a','t','h')
|
||||
#define HB_OT_TAG_BASE_ROMN HB_TAG('r','o','m','n')
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
HB_END_DECLS
|
||||
|
||||
#endif /* HB_OT_LAYOUT_H */
|
||||
|
|
|
|||
|
|
@ -28,6 +28,7 @@ check_PROGRAMS = $(TEST_PROGS)
|
|||
noinst_PROGRAMS = $(TEST_PROGS)
|
||||
|
||||
TEST_PROGS = \
|
||||
test-baseline \
|
||||
test-blob \
|
||||
test-buffer \
|
||||
test-collect-unicodes \
|
||||
|
|
|
|||
Binary file not shown.
|
|
@ -0,0 +1,58 @@
|
|||
/*
|
||||
* Copyright © 2018 Ebrahim Byagowi
|
||||
*
|
||||
* This is part of HarfBuzz, a text shaping library.
|
||||
*
|
||||
* Permission is hereby granted, without written agreement and without
|
||||
* license or royalty fees, to use, copy, modify, and distribute this
|
||||
* software and its documentation for any purpose, provided that the
|
||||
* above copyright notice and the following two paragraphs appear in
|
||||
* all copies of this software.
|
||||
*
|
||||
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
||||
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
||||
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
||||
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||||
* DAMAGE.
|
||||
*
|
||||
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
||||
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
||||
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
||||
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
||||
*/
|
||||
|
||||
#include "hb-test.h"
|
||||
|
||||
#include <hb-ot.h>
|
||||
|
||||
/* Unit tests for hb-ot-layout.h baseline */
|
||||
|
||||
static void
|
||||
test_ot_layout_base (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/base.ttf");
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
|
||||
#if 0
|
||||
hb_position_t position;
|
||||
g_assert (hb_ot_layout_get_baseline (font, HB_OT_LAYOUT_BASELINE_ICFB, HB_DIRECTION_TTB,
|
||||
HB_TAG ('h','a','n','i'),
|
||||
HB_TAG ('E','N','G',' '),
|
||||
&position));
|
||||
g_assert_cmpint (46, ==, position);
|
||||
#endif
|
||||
|
||||
hb_font_destroy (font);
|
||||
hb_face_destroy (face);
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
hb_test_init (&argc, &argv);
|
||||
|
||||
hb_test_add (test_ot_layout_base);
|
||||
|
||||
return hb_test_run();
|
||||
}
|
||||
Loading…
Reference in New Issue