BASE: WIP: more access functions
This commit is contained in:
Elie Roux
parent
bd15567ed6
commit
d34e35b474
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@ -43,12 +43,17 @@
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namespace OT {
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#define NO_COORD -32767
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/*
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* BASE -- The BASE Table
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*/
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struct BaseCoordFormat1 {
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inline SHORT get_coord () const
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{ 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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@ -65,6 +70,9 @@ struct BaseCoordFormat1 {
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struct BaseCoordFormat2 {
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inline SHORT get_coord () const
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{ 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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@ -83,6 +91,9 @@ struct BaseCoordFormat2 {
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struct BaseCoordFormat3 {
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inline SHORT get_coord (void ) const
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{ 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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@ -100,6 +111,18 @@ struct BaseCoordFormat3 {
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struct BaseCoord {
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inline hb_position_t get_value (hb_font_t *font, hb_direction_t dir) const
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{
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SHORT coord;
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switch (u.baseCoordFormat) {
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case 1: coord = u.format1.get_coord();
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case 2: coord = u.format2.get_coord();
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case 3: coord = u.format3.get_coord();
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default: return 0;
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}
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return font->em_scale (coord, dir);
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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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@ -126,6 +149,21 @@ struct BaseCoord {
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struct FeatMinMaxRecord {
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir) const
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{
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if (unlikely(minCoord == Null(OffsetTo<BaseCoord>))) return NO_COORD;
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return (this+minCoord).get_value(font, dir);
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}
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir) const
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{
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if (unlikely(maxCoord == Null(OffsetTo<BaseCoord>))) return NO_COORD;
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return (this+maxCoord).get_value(font, dir);
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}
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inline Tag get_tag () const
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{ return featureTableTag; }
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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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@ -146,6 +184,42 @@ struct FeatMinMaxRecord {
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struct MinMax {
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir) const
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{
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if (unlikely(minCoord == Null(OffsetTo<BaseCoord>))) return NO_COORD;
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return (this+minCoord).get_value(font, dir);
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}
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir) const
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{
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if (unlikely(maxCoord == Null(OffsetTo<BaseCoord>))) return NO_COORD;
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return (this+maxCoord).get_value(font, dir);
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}
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir, Tag featureTableTag) const
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{
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for (unsigned int i = 0; i < featMinMaxCount; i++)
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{
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if (featMinMaxRecords[i].get_tag() == featureTableTag)
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return featMinMaxRecords[i].get_min_value(font, dir);
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// we could take advantage of alphabetical order by comparing Tags, not currently possible
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//if (featMinMaxRecords[i].get_tag() > featureTableTag)
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// break;
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}
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return get_min_value (font, dir);
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}
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir, Tag featureTableTag) const
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{
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for (unsigned int i = 0; i < featMinMaxCount; i++)
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{
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if (featMinMaxRecords[i].get_tag() == featureTableTag)
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return featMinMaxRecords[i].get_max_value(font, dir);
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// we could use alphabetical order to break here
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}
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return get_min_value (font, dir);
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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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@ -153,13 +227,14 @@ struct MinMax {
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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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// TODO: test alphabetical order?
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}
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protected:
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OffsetTo<BaseCoord> minCoord;
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OffsetTo<BaseCoord> maxCoord;
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USHORT featMinMaxCount;
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ArrayOf<FeatMinMaxRecord> featMinMaxRecords;
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ArrayOf<FeatMinMaxRecord> featMinMaxRecords; /* All FeatMinMaxRecords are listed alphabetically */
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public:
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DEFINE_SIZE_ARRAY (8, featMinMaxRecords);
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@ -168,16 +243,32 @@ struct MinMax {
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struct BaseLangSysRecord {
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inline Tag get_tag(void) const
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{ return baseLangSysTag; }
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir) const
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{ return (this+minMax).get_min_value(font, dir); }
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir) const
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{ return (this+minMax).get_max_value(font, dir); }
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir, Tag featureTableTag) const
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{ return (this+minMax).get_min_value(font, dir, featureTableTag); }
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir, Tag featureTableTag) const
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{ return (this+minMax).get_max_value(font, dir, featureTableTag); }
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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 != Null(OffsetTo<MinMax>) &&
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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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OffsetTo<MinMax> minMax; // not supposed to be NULL
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public:
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DEFINE_SIZE_STATIC (6);
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@ -205,6 +296,62 @@ struct BaseValues {
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struct BaseScript {
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir) const
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{
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if (unlikely(defaultMinMax == Null(OffsetTo<MinMax>))) return NO_COORD;
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return (this+defaultMinMax).get_min_value(font, dir);
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}
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir) const
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{
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if (unlikely(defaultMinMax == Null(OffsetTo<MinMax>))) return NO_COORD;
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return (this+defaultMinMax).get_max_value(font, dir);
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}
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir, Tag baseLangSysTag) const
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{
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for (unsigned int i = 0; i < baseLangSysCount; i++)
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{
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if (baseLangSysRecords[i].get_tag() == baseLangSysTag)
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return baseLangSysRecords[i].get_min_value(font, dir);
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// we could use alphabetical order to break here
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}
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return get_min_value (font, dir);
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}
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir, Tag baseLangSysTag) const
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{
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for (unsigned int i = 0; i < baseLangSysCount; i++)
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{
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if (baseLangSysRecords[i].get_tag() == baseLangSysTag)
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return baseLangSysRecords[i].get_max_value(font, dir);
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// we could use alphabetical order to break here
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}
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return get_max_value (font, dir);
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}
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir, Tag baseLangSysTag, Tag featureTableTag) const
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{
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for (unsigned int i = 0; i < baseLangSysCount; i++)
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{
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if (baseLangSysRecords[i].get_tag() == baseLangSysTag)
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return baseLangSysRecords[i].get_min_value(font, dir, featureTableTag);
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// we could use alphabetical order to break here
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}
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return get_min_value (font, dir);
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}
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inline hb_position_t get_max_value (hb_font_t *font, hb_direction_t dir, Tag baseLangSysTag, Tag featureTableTag) const
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{
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for (unsigned int i = 0; i < baseLangSysCount; i++)
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{
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if (baseLangSysRecords[i].get_tag() == baseLangSysTag)
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return baseLangSysRecords[i].get_max_value(font, dir);
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// we could use alphabetical order to break here
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}
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return get_max_value (font, dir);
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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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@ -227,6 +374,16 @@ struct BaseScript {
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struct BaseScriptRecord {
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inline const BaseScript *get_baseScript (void) const
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{
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return &(this+baseScript);
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}
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inline bool get_tag (void) const
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{
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return baseScriptTag;
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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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@ -244,6 +401,22 @@ struct BaseScriptRecord {
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struct BaseScriptList {
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inline const BaseScript *get_baseScript_from_tag (Tag baseScriptTag) const
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{
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for (unsigned int i = 0; i < baseScriptCount; i++)
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if (baseScriptRecords[i].get_tag() == baseScriptTag)
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return baseScriptRecords[i].get_baseScript();
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// we could use alphabetical order to break here
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return NULL;
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}
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inline hb_position_t get_min_value (hb_font_t *font, hb_direction_t dir, Tag baseScriptTag) const
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{
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const BaseScript *baseScript = get_baseScript_from_tag (baseScriptTag);
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if (baseScript == NULL) return NO_COORD;
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return baseScript->get_min_value(font, dir);
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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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@ -260,35 +433,26 @@ struct BaseScriptList {
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};
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struct BaselineTag {
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struct BaseTagList
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{
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inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
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inline bool hasTag(Tag tag) const
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{
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for (unsigned int i = 0; i < baseTagCount; i++)
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if (baselineTags[i] == tag)
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return true;
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return false;
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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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}
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protected:
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Tag tag;
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public:
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DEFINE_SIZE_STATIC (4);
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};
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struct BaseTagList
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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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baselineTags.sanitize (c, this));
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}
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protected:
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USHORT baseTagCount;
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ArrayOf<BaselineTag> baselineTags;
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USHORT baseTagCount;
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ArrayOf<Tag> baselineTags; // must be in alphabetical order
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public:
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DEFINE_SIZE_ARRAY (4, baselineTags);
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@ -297,6 +461,12 @@ struct BaseTagList
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struct Axis
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{
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inline bool hasTag(Tag tag) const
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{
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if (unlikely(baseTagList == Null(OffsetTo<BaseTagList>))) return false;
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return (this+baseTagList).hasTag(tag);
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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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