/*
* Copyright © 2016 Elie Roux <elie.roux@telecom-bretagne.eu>
* Copyright © 2018 Google, Inc.
+ * Copyright © 2018 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
#ifndef HB_OT_LAYOUT_BASE_TABLE_HH
#define HB_OT_LAYOUT_BASE_TABLE_HH
-#include "hb-open-type-private.hh"
-#include "hb-ot-layout-common-private.hh"
+#include "hb-open-type.hh"
+#include "hb-ot-layout-common.hh"
-namespace OT {
+/* To be removed */
+typedef hb_tag_t hb_ot_layout_baseline_t;
-#define NOT_INDEXED ((unsigned int) -1)
+namespace OT {
/*
* BASE -- Baseline
struct BaseCoordFormat1
{
- inline int get_coord (void) const { return coordinate; }
+ hb_position_t get_coord () const { return coordinate; }
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this));
+ return_trace (likely (c->check_struct (this)));
}
protected:
HBUINT16 format; /* Format identifier--format = 1 */
- HBINT16 coordinate; /* X or Y value, in design units */
+ FWORD coordinate; /* X or Y value, in design units */
public:
DEFINE_SIZE_STATIC (4);
};
struct BaseCoordFormat2
{
- inline int get_coord (void) const
+ hb_position_t get_coord () const
{
/* TODO */
return coordinate;
}
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
protected:
HBUINT16 format; /* Format identifier--format = 2 */
- HBINT16 coordinate; /* X or Y value, in design units */
+ FWORD coordinate; /* X or Y value, in design units */
GlyphID referenceGlyph; /* Glyph ID of control glyph */
HBUINT16 coordPoint; /* Index of contour point on the
* reference glyph */
struct BaseCoordFormat3
{
- inline int get_coord (void) const
+ hb_position_t get_coord (hb_font_t *font,
+ const VariationStore &var_store,
+ hb_direction_t direction) const
{
- /* TODO */
- return coordinate;
+ const Device &device = this+deviceTable;
+ return coordinate + (HB_DIRECTION_IS_VERTICAL (direction) ?
+ device.get_y_delta (font, var_store) :
+ device.get_x_delta (font, var_store));
}
- inline bool sanitize (hb_sanitize_context_t *c) const
+
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) && deviceTable.sanitize (c, this));
+ return_trace (likely (c->check_struct (this) &&
+ deviceTable.sanitize (c, this)));
}
protected:
- HBUINT16 format; /* Format identifier--format = 3 */
- HBINT16 coordinate; /* X or Y value, in design units */
- OffsetTo<Device> deviceTable; /* Offset to Device table for X or
- * Y value, from beginning of
- * BaseCoord table (may be NULL). */
+ HBUINT16 format; /* Format identifier--format = 3 */
+ FWORD coordinate; /* X or Y value, in design units */
+ OffsetTo<Device>
+ deviceTable; /* Offset to Device table for X or
+ * Y value, from beginning of
+ * BaseCoord table (may be NULL). */
public:
DEFINE_SIZE_STATIC (6);
};
struct BaseCoord
{
- inline int get_coord (void) const
+ hb_position_t get_coord (hb_font_t *font,
+ const VariationStore &var_store,
+ hb_direction_t direction) const
{
switch (u.format) {
case 1: return u.format1.get_coord ();
case 2: return u.format2.get_coord ();
- case 3: return u.format3.get_coord ();
+ case 3: return u.format3.get_coord (font, var_store, direction);
default:return 0;
}
}
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- if (!u.format.sanitize (c)) return_trace (false);
+ if (unlikely (!u.format.sanitize (c))) return_trace (false);
switch (u.format) {
case 1: return_trace (u.format1.sanitize (c));
case 2: return_trace (u.format2.sanitize (c));
struct FeatMinMaxRecord
{
- inline int get_min_value (void) const
- { return (this+minCoord).get_coord(); }
-
- inline int get_max_value (void) const
- { return (this+maxCoord).get_coord(); }
+ static int cmp (const void *key_, const void *entry_)
+ {
+ hb_tag_t key = * (hb_tag_t *) key_;
+ const FeatMinMaxRecord &entry = * (const FeatMinMaxRecord *) entry_;
+ return key < (unsigned int) entry.tag ? -1 :
+ key > (unsigned int) entry.tag ? 1 :
+ 0;
+ }
- inline const Tag &get_tag () const
- { return tag; }
+ void get_min_max (const BaseCoord **min, const BaseCoord **max) const
+ {
+ if (likely (min)) *min = &(this+minCoord);
+ if (likely (max)) *max = &(this+maxCoord);
+ }
- inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- minCoord.sanitize (c, base) &&
- maxCoord.sanitize (c, base));
+ return_trace (likely (c->check_struct (this) &&
+ minCoord.sanitize (c, this) &&
+ maxCoord.sanitize (c, this)));
}
protected:
- Tag tag; /* 4-byte feature identification tag--must
- * match feature tag in FeatureList */
- OffsetTo<BaseCoord> minCoord; /* Offset to BaseCoord table that defines
- * the minimum extent value, from beginning
- * of MinMax table (may be NULL) */
- OffsetTo<BaseCoord> maxCoord; /* Offset to BaseCoord table that defines
- * the maximum extent value, from beginning
- * of MinMax table (may be NULL) */
+ Tag tag; /* 4-byte feature identification tag--must
+ * match feature tag in FeatureList */
+ OffsetTo<BaseCoord>
+ minCoord; /* Offset to BaseCoord table that defines
+ * the minimum extent value, from beginning
+ * of MinMax table (may be NULL) */
+ OffsetTo<BaseCoord>
+ maxCoord; /* Offset to BaseCoord table that defines
+ * the maximum extent value, from beginning
+ * of MinMax table (may be NULL) */
public:
DEFINE_SIZE_STATIC (8);
struct MinMax
{
- inline unsigned int get_feature_tag_index (Tag featureTableTag) const
- {
- /* TODO bsearch */
- unsigned int count = featMinMaxRecords.len;
- for (unsigned int i = 0; i < count; i++)
+ void get_min_max (hb_tag_t feature_tag,
+ const BaseCoord **min,
+ const BaseCoord **max) const
+ {
+ /* TODO Replace hb_bsearch() with .bsearch(). */
+ const FeatMinMaxRecord *minMaxCoord = (const FeatMinMaxRecord *)
+ hb_bsearch (&feature_tag, featMinMaxRecords.arrayZ,
+ featMinMaxRecords.len,
+ FeatMinMaxRecord::static_size,
+ FeatMinMaxRecord::cmp);
+ if (minMaxCoord)
+ minMaxCoord->get_min_max (min, max);
+ else
{
- Tag tag = featMinMaxRecords[i].get_tag();
- int cmp = tag.cmp(featureTableTag);
- if (cmp == 0) return i;
- if (cmp > 0) return NOT_INDEXED;
+ if (likely (min)) *min = &(this+minCoord);
+ if (likely (max)) *max = &(this+maxCoord);
}
- return NOT_INDEXED;
- }
-
- inline int get_min_value (unsigned int featureTableTagIndex) const
- {
- if (featureTableTagIndex == NOT_INDEXED)
- return (this+minCoord).get_coord();
- return featMinMaxRecords[featureTableTagIndex].get_min_value();
- }
-
- inline int get_max_value (unsigned int featureTableTagIndex) const
- {
- if (featureTableTagIndex == NOT_INDEXED)
- return (this+maxCoord).get_coord();
- return featMinMaxRecords[featureTableTagIndex].get_max_value();
}
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- minCoord.sanitize (c, this) &&
- maxCoord.sanitize (c, this) &&
- featMinMaxRecords.sanitize (c, this));
+ return_trace (likely (c->check_struct (this) &&
+ minCoord.sanitize (c, this) &&
+ maxCoord.sanitize (c, this) &&
+ featMinMaxRecords.sanitize (c, this)));
}
protected:
- OffsetTo<BaseCoord> minCoord; /* Offset to BaseCoord table that defines
- * minimum extent value, from the beginning
- * of MinMax table (may be NULL) */
- OffsetTo<BaseCoord> maxCoord; /* Offset to BaseCoord table that defines
- * maximum extent value, from the beginning
- * of MinMax table (may be NULL) */
- ArrayOf<FeatMinMaxRecord>
- featMinMaxRecords; /* Array of FeatMinMaxRecords, in alphabetical
- * order by featureTableTag */
+ OffsetTo<BaseCoord>
+ minCoord; /* Offset to BaseCoord table that defines
+ * minimum extent value, from the beginning
+ * of MinMax table (may be NULL) */
+ OffsetTo<BaseCoord>
+ maxCoord; /* Offset to BaseCoord table that defines
+ * maximum extent value, from the beginning
+ * of MinMax table (may be NULL) */
+ SortedArrayOf<FeatMinMaxRecord>
+ featMinMaxRecords;
+ /* Array of FeatMinMaxRecords, in alphabetical
+ * order by featureTableTag */
public:
DEFINE_SIZE_ARRAY (6, featMinMaxRecords);
};
-/* TODO... */
-struct BaseLangSysRecord
-{
- inline const Tag& get_tag(void) const
- { return baseLangSysTag; }
-
- inline unsigned int get_feature_tag_index (Tag featureTableTag) const
- { return (this+minMax).get_feature_tag_index(featureTableTag); }
-
- inline int get_min_value (unsigned int featureTableTagIndex) const
- { return (this+minMax).get_min_value(featureTableTagIndex); }
-
- inline int get_max_value (unsigned int featureTableTagIndex) const
- { return (this+minMax).get_max_value(featureTableTagIndex); }
-
- inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- minMax.sanitize (c, base));
- }
-
- protected:
- Tag baseLangSysTag;
- OffsetTo<MinMax> minMax;
- public:
- DEFINE_SIZE_STATIC (6);
-
-};
-
struct BaseValues
{
- inline unsigned int get_default_base_tag_index (void) const
- { return defaultIndex; }
-
- inline int get_base_coord (unsigned int baselineTagIndex) const
+ const BaseCoord &get_base_coord (int baseline_tag_index) const
{
- return (this+baseCoords[baselineTagIndex]).get_coord();
+ if (baseline_tag_index == -1) baseline_tag_index = defaultIndex;
+ return this+baseCoords[baseline_tag_index];
}
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- defaultIndex <= baseCoordCount &&
- baseCoords.sanitize (c, this));
+ return_trace (likely (c->check_struct (this) &&
+ baseCoords.sanitize (c, this)));
}
protected:
- Index defaultIndex;
- HBUINT16 baseCoordCount;
- OffsetArrayOf<BaseCoord> baseCoords;
+ Index defaultIndex; /* Index number of default baseline for this
+ * script — equals index position of baseline tag
+ * in baselineTags array of the BaseTagList */
+ OffsetArrayOf<BaseCoord>
+ baseCoords; /* Number of BaseCoord tables defined — should equal
+ * baseTagCount in the BaseTagList
+ *
+ * Array of offsets to BaseCoord tables, from beginning of
+ * BaseValues table — order matches baselineTags array in
+ * the BaseTagList */
public:
- DEFINE_SIZE_ARRAY (6, baseCoords);
-
+ DEFINE_SIZE_ARRAY (4, baseCoords);
};
-struct BaseScript {
-
- inline unsigned int get_lang_tag_index (Tag baseLangSysTag) const
- {
- Tag tag;
- int cmp;
- for (unsigned int i = 0; i < baseLangSysCount; i++) {
- tag = baseLangSysRecords[i].get_tag();
- // taking advantage of alphabetical order
- cmp = tag.cmp(baseLangSysTag);
- if (cmp == 0) return i;
- if (cmp > 0) return NOT_INDEXED;
- }
- return NOT_INDEXED;
- }
-
- inline unsigned int get_feature_tag_index (unsigned int baseLangSysIndex, Tag featureTableTag) const
- {
- if (baseLangSysIndex == NOT_INDEXED) {
- if (unlikely(defaultMinMax)) return NOT_INDEXED;
- return (this+defaultMinMax).get_feature_tag_index(featureTableTag);
- }
- if (unlikely(baseLangSysIndex >= baseLangSysCount)) return NOT_INDEXED;
- return baseLangSysRecords[baseLangSysIndex].get_feature_tag_index(featureTableTag);
- }
-
- inline int get_min_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- if (baseLangSysIndex == NOT_INDEXED)
- return (this+defaultMinMax).get_min_value(featureTableTagIndex);
- return baseLangSysRecords[baseLangSysIndex].get_max_value(featureTableTagIndex);
- }
-
- inline int get_max_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
+struct BaseLangSysRecord
+{
+ static int cmp (const void *key_, const void *entry_)
{
- if (baseLangSysIndex == NOT_INDEXED)
- return (this+defaultMinMax).get_min_value(featureTableTagIndex);
- return baseLangSysRecords[baseLangSysIndex].get_max_value(featureTableTagIndex);
+ hb_tag_t key = * (hb_tag_t *) key_;
+ const BaseLangSysRecord &entry = * (const BaseLangSysRecord *) entry_;
+ return key < (unsigned int) entry.baseLangSysTag ? -1 :
+ key > (unsigned int) entry.baseLangSysTag ? 1 :
+ 0;
}
- inline unsigned int get_default_base_tag_index (void) const
- { return (this+baseValues).get_default_base_tag_index(); }
+ const MinMax &get_min_max () const
+ { return this+minMax; }
- inline int get_base_coord (unsigned int baselineTagIndex) const
- { return (this+baseValues).get_base_coord(baselineTagIndex); }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- baseValues.sanitize (c, this) &&
- defaultMinMax.sanitize (c, this) &&
- baseLangSysRecords.sanitize (c, this));
+ return_trace (likely (c->check_struct (this) &&
+ minMax.sanitize (c, this)));
}
protected:
- OffsetTo<BaseValues> baseValues;
- OffsetTo<MinMax> defaultMinMax;
- HBUINT16 baseLangSysCount;
- ArrayOf<BaseLangSysRecord> baseLangSysRecords;
-
+ Tag baseLangSysTag; /* 4-byte language system identification tag */
+ OffsetTo<MinMax>
+ minMax; /* Offset to MinMax table, from beginning
+ * of BaseScript table */
public:
- DEFINE_SIZE_ARRAY (8, baseLangSysRecords);
+ DEFINE_SIZE_STATIC (6);
};
+struct BaseScript
+{
+ const MinMax &get_min_max (hb_tag_t language_tag) const
+ {
+ /* TODO Replace hb_bsearch() with .bsearch(). */
+ const BaseLangSysRecord* record = (const BaseLangSysRecord *)
+ hb_bsearch (&language_tag, baseLangSysRecords.arrayZ,
+ baseLangSysRecords.len,
+ BaseLangSysRecord::static_size,
+ BaseLangSysRecord::cmp);
+ return record ? record->get_min_max () : this+defaultMinMax;
+ }
-struct BaseScriptRecord {
-
- inline const Tag& get_tag (void) const
- { return baseScriptTag; }
-
- inline unsigned int get_default_base_tag_index(void) const
- { return (this+baseScript).get_default_base_tag_index(); }
-
- inline int get_base_coord(unsigned int baselineTagIndex) const
- { return (this+baseScript).get_base_coord(baselineTagIndex); }
-
- inline unsigned int get_lang_tag_index (Tag baseLangSysTag) const
- { return (this+baseScript).get_lang_tag_index(baseLangSysTag); }
-
- inline unsigned int get_feature_tag_index (unsigned int baseLangSysIndex, Tag featureTableTag) const
- { return (this+baseScript).get_feature_tag_index(baseLangSysIndex, featureTableTag); }
-
- inline int get_max_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- { return (this+baseScript).get_max_value(baseLangSysIndex, featureTableTagIndex); }
+ const BaseCoord &get_base_coord (int baseline_tag_index) const
+ { return (this+baseValues).get_base_coord (baseline_tag_index); }
- inline int get_min_value (unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- { return (this+baseScript).get_min_value(baseLangSysIndex, featureTableTagIndex); }
+ bool is_empty () const { return !baseValues; }
- inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- baseScript != Null(OffsetTo<BaseScript>) &&
- baseScript.sanitize (c, base));
+ return_trace (likely (c->check_struct (this) &&
+ baseValues.sanitize (c, this) &&
+ defaultMinMax.sanitize (c, this) &&
+ baseLangSysRecords.sanitize (c, this)));
}
protected:
- Tag baseScriptTag;
- OffsetTo<BaseScript> baseScript;
+ OffsetTo<BaseValues>
+ baseValues; /* Offset to BaseValues table, from beginning
+ * of BaseScript table (may be NULL) */
+ OffsetTo<MinMax>
+ defaultMinMax; /* Offset to MinMax table, from beginning of
+ * BaseScript table (may be NULL) */
+ SortedArrayOf<BaseLangSysRecord>
+ baseLangSysRecords;
+ /* Number of BaseLangSysRecords
+ * defined — may be zero (0) */
public:
- DEFINE_SIZE_STATIC (6);
+ DEFINE_SIZE_ARRAY (6, baseLangSysRecords);
};
-struct BaseScriptList {
-
- inline unsigned int get_base_script_index (Tag baseScriptTag) const
- {
- for (unsigned int i = 0; i < baseScriptCount; i++)
- if (baseScriptRecords[i].get_tag() == baseScriptTag)
- return i;
- return NOT_INDEXED;
- }
-
- inline unsigned int get_default_base_tag_index (unsigned int baseScriptIndex) const
- {
- if (unlikely(baseScriptIndex >= baseScriptCount)) return NOT_INDEXED;
- return baseScriptRecords[baseScriptIndex].get_default_base_tag_index();
- }
-
- 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
- {
- if (unlikely(baseScriptIndex >= baseScriptCount)) return NOT_INDEXED;
- return baseScriptRecords[baseScriptIndex].get_lang_tag_index(baseLangSysTag);
- }
-
- inline unsigned int get_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
- {
- if (unlikely(baseScriptIndex >= baseScriptCount)) return NOT_INDEXED;
- return baseScriptRecords[baseScriptIndex].get_feature_tag_index(baseLangSysIndex, featureTableTag);
- }
-
- inline int get_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
+struct BaseScriptList;
+struct BaseScriptRecord
+{
+ static int cmp (const void *key_, const void *entry_)
{
- return baseScriptRecords[baseScriptIndex].get_max_value(baseLangSysIndex, featureTableTagIndex);
+ hb_tag_t key = * (hb_tag_t *) key_;
+ const BaseScriptRecord &entry = * (const BaseScriptRecord *) entry_;
+ return key < (unsigned int) entry.baseScriptTag ? -1 :
+ key > (unsigned int) entry.baseScriptTag ? 1 :
+ 0;
}
- inline int get_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- return baseScriptRecords[baseScriptIndex].get_min_value(baseLangSysIndex, featureTableTagIndex);
- }
+ const BaseScript &get_base_script (const BaseScriptList *list) const
+ { return list+baseScript; }
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- baseScriptRecords.sanitize (c, this));
+ return_trace (likely (c->check_struct (this) &&
+ baseScript.sanitize (c, base)));
}
protected:
- HBUINT16 baseScriptCount;
- ArrayOf<BaseScriptRecord> baseScriptRecords;
+ Tag baseScriptTag; /* 4-byte script identification tag */
+ OffsetTo<BaseScript>
+ baseScript; /* Offset to BaseScript table, from beginning
+ * of BaseScriptList */
public:
- DEFINE_SIZE_ARRAY (4, baseScriptRecords);
-
+ DEFINE_SIZE_STATIC (6);
};
-struct BaseTagList
+struct BaseScriptList
{
+ const BaseScriptRecord *find_record (hb_tag_t script) const
+ {
+ /* TODO Replace hb_bsearch() with .bsearch(). */
+ return (const BaseScriptRecord *) hb_bsearch (&script, baseScriptRecords.arrayZ,
+ baseScriptRecords.len,
+ BaseScriptRecord::static_size,
+ BaseScriptRecord::cmp);
+ }
- inline unsigned int get_tag_index(Tag baselineTag) const
+ /* TODO: Or client should handle fallback? */
+ const BaseScript &get_base_script (hb_tag_t script) const
{
- for (unsigned int i = 0; i < baseTagCount; i++)
- if (baselineTags[i] == baselineTag)
- return i;
- return NOT_INDEXED;
+ const BaseScriptRecord *record = find_record (script);
+ if (!record) record = find_record ((hb_script_t) HB_TAG ('D','F','L','T'));
+
+ return record ? record->get_base_script (this) : Null (BaseScript);
}
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this));
+ return_trace (c->check_struct (this) &&
+ baseScriptRecords.sanitize (c, this));
}
protected:
- HBUINT16 baseTagCount;
- SortedArrayOf<Tag> baselineTags;
+ SortedArrayOf<BaseScriptRecord>
+ baseScriptRecords;
public:
- DEFINE_SIZE_ARRAY (4, baselineTags);
+ DEFINE_SIZE_ARRAY (2, baseScriptRecords);
};
struct Axis
{
-
- inline unsigned int get_base_tag_index(Tag baselineTag) const
+ bool get_baseline (hb_ot_layout_baseline_t baseline,
+ hb_tag_t script_tag,
+ hb_tag_t language_tag,
+ const BaseCoord **coord) const
{
- if (unlikely(baseTagList == Null(OffsetTo<BaseTagList>))) return NOT_INDEXED;
- 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;
- inline unsigned int get_default_base_tag_index_for_script_index (unsigned int baseScriptIndex) const
- {
- if (unlikely(baseScriptList == Null(OffsetTo<BaseScriptList>))) return NOT_INDEXED;
- return (this+baseScriptList).get_default_base_tag_index(baseScriptIndex);
- }
-
- inline int get_base_coord(unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
- {
- return (this+baseScriptList).get_base_coord(baseScriptIndex, baselineTagIndex);
- }
+ if (likely (coord)) *coord = &base_script.get_base_coord ((this+baseTagList).bsearch (baseline));
- inline unsigned int get_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
- {
- if (unlikely(baseScriptList == Null(OffsetTo<BaseScriptList>))) return NOT_INDEXED;
- return (this+baseScriptList).get_lang_tag_index(baseScriptIndex, baseLangSysTag);
+ return true;
}
- inline unsigned int get_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
+ 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
{
- if (unlikely(baseScriptList == Null(OffsetTo<BaseScriptList>))) return NOT_INDEXED;
- return (this+baseScriptList).get_feature_tag_index(baseScriptIndex, baseLangSysIndex, featureTableTag);
- }
+ const BaseScript &base_script = (this+baseScriptList).get_base_script (script_tag);
+ if (base_script.is_empty ()) return false;
- inline int get_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- return (this+baseScriptList).get_max_value(baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
- }
+ base_script.get_min_max (language_tag).get_min_max (feature_tag, min_coord, max_coord);
- 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
+ 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);
struct BASE
{
- static const hb_tag_t tableTag = HB_OT_TAG_BASE;
-
- inline bool has_vert_axis(void)
- { return vertAxis != Null(OffsetTo<Axis>); }
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_BASE;
- inline bool has_horiz_axis(void)
- { return horizAxis != Null(OffsetTo<Axis>); }
+ const Axis &get_axis (hb_direction_t direction) const
+ { return HB_DIRECTION_IS_VERTICAL (direction) ? this+vAxis : this+hAxis; }
- // horizontal axis base coords:
+ const VariationStore &get_var_store () const
+ { return version.to_int () < 0x00010001u ? Null (VariationStore) : this+varStore; }
- inline unsigned int get_horiz_base_tag_index(Tag baselineTag) const
+ 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
{
- if (unlikely(horizAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+horizAxis).get_base_tag_index(baselineTag);
- }
+ const BaseCoord *base_coord;
+ if (!get_axis (direction).get_baseline (baseline, script_tag, language_tag, &base_coord))
+ return false;
- inline unsigned int get_horiz_default_base_tag_index_for_script_index (unsigned int baseScriptIndex) const
- {
- if (unlikely(horizAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+horizAxis).get_default_base_tag_index_for_script_index(baseScriptIndex);
+ if (likely (base && base_coord)) *base = base_coord->get_coord (font,
+ get_var_store (),
+ direction);
+ return true;
}
- inline int get_horiz_base_coord(unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
+ /* TODO: Expose this separately sometime? */
+ 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+horizAxis).get_base_coord(baseScriptIndex, baselineTagIndex);
- }
-
- // vertical axis base coords:
-
- inline unsigned int get_vert_base_tag_index(Tag baselineTag) const
- {
- if (unlikely(vertAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+vertAxis).get_base_tag_index(baselineTag);
- }
-
- inline unsigned int get_vert_default_base_tag_index_for_script_index (unsigned int baseScriptIndex) const
- {
- if (unlikely(vertAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+vertAxis).get_default_base_tag_index_for_script_index(baseScriptIndex);
- }
-
- inline int get_vert_base_coord(unsigned int baseScriptIndex, unsigned int baselineTagIndex) const
- {
- return (this+vertAxis).get_base_coord(baseScriptIndex, baselineTagIndex);
- }
-
- // horizontal axis min/max coords:
-
- inline unsigned int get_horiz_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
- {
- if (unlikely(horizAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+horizAxis).get_lang_tag_index (baseScriptIndex, baseLangSysTag);
- }
-
- inline unsigned int get_horiz_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
- {
- if (unlikely(horizAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+horizAxis).get_feature_tag_index (baseScriptIndex, baseLangSysIndex, featureTableTag);
- }
+ 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_horiz_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- return (this+horizAxis).get_max_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
- }
-
- inline int get_horiz_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- return (this+horizAxis).get_min_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
- }
-
- // vertical axis min/max coords:
-
- inline unsigned int get_vert_lang_tag_index (unsigned int baseScriptIndex, Tag baseLangSysTag) const
- {
- if (unlikely(vertAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+vertAxis).get_lang_tag_index (baseScriptIndex, baseLangSysTag);
- }
-
- inline unsigned int get_vert_feature_tag_index (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, Tag featureTableTag) const
- {
- if (unlikely(vertAxis == Null(OffsetTo<Axis>))) return NOT_INDEXED;
- return (this+vertAxis).get_feature_tag_index (baseScriptIndex, baseLangSysIndex, featureTableTag);
- }
-
- inline int get_vert_max_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- return (this+vertAxis).get_max_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 int get_vert_min_value (unsigned int baseScriptIndex, unsigned int baseLangSysIndex, unsigned int featureTableTagIndex) const
- {
- return (this+vertAxis).get_min_value (baseScriptIndex, baseLangSysIndex, featureTableTagIndex);
- }
-
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- likely (version.major == 1) &&
- horizAxis.sanitize (c, this) &&
- vertAxis.sanitize (c, this) &&
- (version.to_int () < 0x00010001u || varStore.sanitize (c, 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))));
}
protected:
- FixedVersion<> version;
- OffsetTo<Axis> horizAxis;
- OffsetTo<Axis> vertAxis;
+ 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
- * header (may be NULL). Introduced
- * in version 0x00010001. */
+ varStore; /* Offset to the table of Item Variation
+ * Store--from beginning of BASE
+ * header (may be NULL). Introduced
+ * in version 0x00010001. */
public:
DEFINE_SIZE_MIN (8);
};
projects / platform / upstream / harfbuzz.git / blobdiff