Starting public interface
This commit is contained in:
Behdad Esfahbod
parent
7586089c6f
commit
fd92a3dde3
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@ -27,16 +27,15 @@
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#ifndef HB_OT_LAYOUT_GDEF_PRIVATE_H
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#define HB_OT_LAYOUT_GDEF_PRIVATE_H
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#include "hb-private.h"
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#include "hb-ot-layout.h"
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#include "hb-ot-layout-private.h"
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#include "hb-ot-layout-open-private.h"
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#define DEFINE_INDIRECT_GLYPH_ARRAY_LOOKUP(Type, name) \
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inline const Type& name (uint16_t glyph_id) { \
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inline const Type& name (hb_ot_layout_glyph_t glyph_id) { \
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const Coverage &c = get_coverage (); \
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int c_index = c.get_coverage (glyph_id); \
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hb_ot_layout_coverage_t c_index = c.get_coverage (glyph_id); \
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return (*this)[c_index]; \
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}
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@ -73,7 +72,7 @@ struct AttachList {
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friend struct GDEF;
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private:
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/* const AttachPoint& get_attach_points (uint16_t glyph_id); */
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/* const AttachPoint& get_attach_points (hb_ot_layout_glyph_t glyph_id); */
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DEFINE_INDIRECT_GLYPH_ARRAY_LOOKUP (AttachPoint, get_attach_points);
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private:
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@ -206,7 +205,7 @@ struct LigCaretList {
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friend struct GDEF;
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private:
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/* const LigGlyph& get_lig_glyph (uint16_t glyph_id); */
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/* const LigGlyph& get_lig_glyph (hb_ot_layout_glyph_t glyph_id); */
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DEFINE_INDIRECT_GLYPH_ARRAY_LOOKUP (LigGlyph, get_lig_glyph);
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private:
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@ -241,17 +240,15 @@ struct GDEF {
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DEFINE_ACCESSOR (ClassDef, get_mark_attach_class_def, markAttachClassDef);
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/* Returns 0 if not found. */
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inline int get_glyph_class (uint16_t glyph_id) const {
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inline int get_glyph_class (hb_ot_layout_glyph_t glyph_id) const {
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return get_glyph_class_def ().get_class (glyph_id);
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}
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/* Returns 0 if not found. */
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inline int get_mark_attachment_type (uint16_t glyph_id) const {
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inline int get_mark_attachment_type (hb_ot_layout_glyph_t glyph_id) const {
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return get_mark_attach_class_def ().get_class (glyph_id);
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}
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/* TODO get_glyph_property */
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/* TODO get_attach and get_lig_caret */
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private:
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@ -27,8 +27,7 @@
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#ifndef HB_OT_LAYOUT_GSUB_PRIVATE_H
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#define HB_OT_LAYOUT_GSUB_PRIVATE_H
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#include "hb-private.h"
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#include "hb-ot-layout.h"
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#include "hb-ot-layout-private.h"
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#include "hb-ot-layout-open-private.h"
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#include "hb-ot-layout-gdef-private.h"
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@ -27,8 +27,7 @@
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#ifndef HB_OT_LAYOUT_OPEN_PRIVATE_H
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#define HB_OT_LAYOUT_OPEN_PRIVATE_H
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#include "hb-private.h"
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#include "hb-ot-layout.h"
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#include "hb-ot-layout-private.h"
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/*
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@ -89,6 +88,9 @@
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return *(const Type *)((const char*)this + array[i]); \
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}
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/* A record array type is like an array type, but it contains a table
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* of records to the objects. Each record has a tag, and an offset
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* relative to the beginning of the current object. */
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#define DEFINE_RECORD_ARRAY_TYPE(Type, array, num) \
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DEFINE_RECORD_ACCESSOR(Type, array, num) \
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DEFINE_LEN_AND_SIZE(Record, array, num)
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@ -104,6 +106,37 @@
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} \
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/* TODO: implement find_tag() */
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#define DEFINE_ARRAY_INTERFACE(Type, name) \
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inline const Type& get_##name (unsigned int i) const { \
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return (*this)[i]; \
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} \
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inline unsigned int get_##name##_count (void) const { \
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return this->get_len (); \
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}
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#define DEFINE_INDEX_ARRAY_INTERFACE(name) \
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inline unsigned int get_##name##_index (unsigned int i) const { \
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return (*this)[i]; \
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} \
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inline unsigned int get_##name##_count (void) const { \
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return this->get_len (); \
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}
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#define DEFINE_FIND_TAG_INTERFACE(Type, name) \
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inline const Type* find_##name (hb_tag_t tag) const { \
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for (unsigned int i = 0; i < this->get_len (); i++) \
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if (tag == (*this)[i].tag) \
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return &(*this)[i]; \
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return NULL; \
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} \
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inline const Type& get_##name_by_tag (hb_tag_t tag) const { \
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for (unsigned int i = 0; i < this->get_len (); i++) \
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if (tag == (*this)[i].tag) \
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return (*this)[i]; \
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return Null##Type; \
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}
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/*
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* List types
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*/
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@ -144,13 +177,15 @@
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/* get_for_data() is a static class method returning a reference to an
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* instance of Type located at the input data location. It's just a
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* fancy cast! */
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#define STATIC_DEFINE_GET_FOR_DATA0(const, Type) \
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static inline const Type& get_for_data (const char *data) { \
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return *(const Type*)data; \
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}
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#define STATIC_DEFINE_GET_FOR_DATA(Type) \
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STATIC_DEFINE_GET_FOR_DATA0(const, Type) \
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STATIC_DEFINE_GET_FOR_DATA0( , Type)
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static inline const Type& get_for_data (const char *data) { \
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extern const Type &Null##Type; \
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if (HB_UNLIKELY (data == NULL)) return Null##Type; \
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return *(const Type*)data; \
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} \
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static inline Type& get_for_data (char *data) { \
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return *(Type*)data; \
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}
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#define DEFINE_ACCESSOR(Type, name, Name) \
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@ -297,8 +332,9 @@ struct TTCHeader;
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typedef struct TableDirectory {
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friend struct OpenTypeFontFile;
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friend struct OffsetTable;
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inline bool is_null (void) const { return length == 0; }
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inline const Tag& get_tag (void) const { return tag; }
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inline unsigned long get_checksum (void) const { return checkSum; }
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inline unsigned long get_offset (void) const { return offset; }
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@ -312,17 +348,19 @@ typedef struct TableDirectory {
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ULONG length; /* Length of this table. */
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} OpenTypeTable;
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DEFINE_NULL_ASSERT_SIZE (TableDirectory, 16);
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DEFINE_NULL_ALIAS (OpenTypeTable, TableDirectory);
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typedef struct OffsetTable {
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friend struct OpenTypeFontFile;
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friend struct TTCHeader;
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// XXX private:
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// Add get_num_tables and get_table...
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DEFINE_ARRAY_INTERFACE (OpenTypeTable, table);
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DEFINE_FIND_TAG_INTERFACE (OpenTypeTable, table);
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private:
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/* OpenTypeTables, in no particular order */
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DEFINE_ARRAY_TYPE (TableDirectory, tableDir, numTables);
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// TODO: Implement find_table
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private:
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Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */
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@ -427,9 +465,9 @@ typedef struct Record {
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DEFINE_NULL_ASSERT_SIZE (Record, 6);
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struct LangSys {
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/* Feature indices, in no particular order */
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DEFINE_ARRAY_TYPE (USHORT, featureIndex, featureCount);
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DEFINE_INDEX_ARRAY_INTERFACE (feature);
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/* Returns -1 if none */
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inline int get_required_feature_index (void) const {
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if (reqFeatureIndex == 0xffff)
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@ -437,7 +475,9 @@ struct LangSys {
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return reqFeatureIndex;;
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}
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/* TODO implement find_feature */
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private:
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/* Feature indices, in no particular order */
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DEFINE_ARRAY_TYPE (USHORT, featureIndex, featureCount);
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private:
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Offset lookupOrder; /* = Null (reserved for an offset to a
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@ -490,6 +530,10 @@ private:
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DEFINE_NULL_ASSERT_SIZE (ScriptList, 2);
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struct Feature {
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DEFINE_INDEX_ARRAY_INTERFACE (lookup);
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private:
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/* LookupList indices, in no particular order */
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DEFINE_ARRAY_TYPE (USHORT, lookupIndex, lookupCount);
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@ -583,7 +627,7 @@ struct CoverageFormat1 {
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/* GlyphIDs, in sorted numerical order */
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DEFINE_ARRAY_TYPE (GlyphID, glyphArray, glyphCount);
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inline int get_coverage (uint16_t glyph_id) const {
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inline hb_ot_layout_coverage_t get_coverage (hb_ot_layout_glyph_t glyph_id) const {
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GlyphID gid;
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gid = glyph_id;
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// TODO: bsearch
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@ -605,7 +649,7 @@ struct CoverageRangeRecord {
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friend struct CoverageFormat2;
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private:
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inline int get_coverage (uint16_t glyph_id) const {
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inline hb_ot_layout_coverage_t get_coverage (hb_ot_layout_glyph_t glyph_id) const {
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if (glyph_id >= start && glyph_id <= end)
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return startCoverageIndex + (glyph_id - start);
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return -1;
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@ -627,7 +671,7 @@ struct CoverageFormat2 {
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/* CoverageRangeRecords, in sorted numerical start order */
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DEFINE_ARRAY_TYPE (CoverageRangeRecord, rangeRecord, rangeCount);
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inline int get_coverage (uint16_t glyph_id) const {
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inline hb_ot_layout_coverage_t get_coverage (hb_ot_layout_glyph_t glyph_id) const {
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// TODO: bsearch
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for (unsigned int i = 0; i < rangeCount; i++) {
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int coverage = rangeRecord[i].get_coverage (glyph_id);
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@ -657,8 +701,7 @@ struct Coverage {
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}
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}
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/* Returns -1 if not covered. */
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int get_coverage (uint16_t glyph_id) const {
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hb_ot_layout_coverage_t get_coverage (hb_ot_layout_glyph_t glyph_id) const {
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switch (u.coverageFormat) {
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case 1: return u.format1.get_coverage(glyph_id);
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case 2: return u.format2.get_coverage(glyph_id);
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@ -687,7 +730,7 @@ struct ClassDefFormat1 {
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/* GlyphIDs, in sorted numerical order */
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DEFINE_ARRAY_TYPE (USHORT, classValueArray, glyphCount);
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inline int get_class (uint16_t glyph_id) const {
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inline hb_ot_layout_class_t get_class (hb_ot_layout_glyph_t glyph_id) const {
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if (glyph_id >= startGlyph && glyph_id < startGlyph + glyphCount)
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return classValueArray[glyph_id - startGlyph];
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return 0;
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@ -706,7 +749,7 @@ struct ClassRangeRecord {
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friend struct ClassDefFormat2;
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private:
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inline int get_class (uint16_t glyph_id) const {
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inline hb_ot_layout_class_t get_class (hb_ot_layout_glyph_t glyph_id) const {
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if (glyph_id >= start && glyph_id <= end)
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return classValue;
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return 0;
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@ -727,7 +770,7 @@ struct ClassDefFormat2 {
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/* ClassRangeRecords, in sorted numerical start order */
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DEFINE_ARRAY_TYPE (ClassRangeRecord, rangeRecord, rangeCount);
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inline int get_class (uint16_t glyph_id) const {
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inline hb_ot_layout_class_t get_class (hb_ot_layout_glyph_t glyph_id) const {
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// TODO: bsearch
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for (int i = 0; i < rangeCount; i++) {
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int classValue = rangeRecord[i].get_class (glyph_id);
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@ -756,8 +799,7 @@ struct ClassDef {
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}
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}
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/* Returns 0 if not found. */
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int get_class (uint16_t glyph_id) const {
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hb_ot_layout_class_t get_class (hb_ot_layout_glyph_t glyph_id) const {
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switch (u.classFormat) {
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case 1: return u.format1.get_class(glyph_id);
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case 2: return u.format2.get_class(glyph_id);
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@ -835,8 +877,6 @@ typedef struct GSUBGPOS {
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DEFINE_LIST_ACCESSOR(Feature, feature);/* get_feature_list, get_feature(i) */
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DEFINE_LIST_ACCESSOR(Lookup, lookup); /* get_lookup_list, get_lookup(i) */
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/* TODO implement find_script */
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private:
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Fixed_Version version; /* Version of the GSUB/GPOS table--initially set
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* to 0x00010000 */
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@ -0,0 +1,51 @@
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/*
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* Copyright (C) 2007,2008 Red Hat, Inc.
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*
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* This is part of HarfBuzz, an OpenType Layout engine library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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*/
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#ifndef HB_OT_LAYOUT_PRIVATE_H
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#define HB_OT_LAYOUT_PRIVATE_H
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#ifndef HB_OT_LAYOUT_CC
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#error "This file should only be included from hb-ot-layout.c"
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#endif
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#include "hb-private.h"
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#include "hb-ot-layout.h"
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struct GDEF;
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struct GSUB;
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struct GPOS;
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HB_BEGIN_DECLS();
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struct _HB_OT_Layout {
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GDEF *gdef;
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GSUB *gsub;
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GPOS *gpos;
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};
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HB_END_DECLS();
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#endif /* HB_OT_LAYOUT_PRIVATE_H */
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@ -0,0 +1,67 @@
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/*
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* Copyright (C) 2007,2008 Red Hat, Inc.
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*
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* This is part of HarfBuzz, an OpenType Layout engine library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
|
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* software and its documentation for any purpose, provided that the
|
||||
* above copyright notice and the following two paragraphs appear in
|
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
||||
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
||||
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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*/
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#define HB_OT_LAYOUT_CC
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#include "hb-ot-layout.h"
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#include "hb-ot-layout-private.h"
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#include "hb-ot-layout-open-private.h"
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#include "hb-ot-layout-gdef-private.h"
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#include "hb-ot-layout-gsub-private.h"
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#include <stdlib.h>
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HB_OT_Layout *
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hb_ot_layout_create (const char *font_data,
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int face_index)
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{
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HB_OT_Layout *layout = (HB_OT_Layout *) calloc (1, sizeof (HB_OT_Layout));
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const OpenTypeFontFile &ot = OpenTypeFontFile::get_for_data (font_data);
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const OpenTypeFontFace &font = ot[face_index];
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layout->gdef = font.find_table (GDEF::Tag);
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layout->gsub = font.find_table (GSUB::Tag);
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layout->gpos = font.find_table (GPOS::Tag);
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return layout;
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}
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void
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hb_ot_layout_destroy (HB_OT_Layout *layout)
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{
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free (layout);
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}
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hb_ot_layout_glyph_properties_t
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hb_ot_layout_get_glyph_properties (HB_OT_Layout *layout,
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hb_ot_layout_glyph_t glyph);
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void
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hb_ot_layout_set_glyph_properties (HB_OT_Layout *layout,
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hb_ot_layout_glyph_t glyph,
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hb_ot_layout_glyph_properties_t properties);
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@ -24,8 +24,8 @@
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* Red Hat Author(s): Behdad Esfahbod
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*/
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#ifndef HB_OT_LAYOUT_OPEN_H
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#define HB_OT_LAYOUT_OPEN_H
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#ifndef HB_OT_LAYOUT_H
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#define HB_OT_LAYOUT_H
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#include "hb-common.h"
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@ -38,6 +38,35 @@ typedef uint32_t hb_tag_t;
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((const char *) s)[2], \
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((const char *) s)[3]))
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typedef uint16_t hb_ot_layout_glyph_properties_t;
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typedef uint16_t hb_ot_layout_glyph_t;
|
||||
typedef uint16_t hb_ot_layout_class_t;
|
||||
typedef int hb_ot_layout_coverage_t; /* -1 is not covered, >= 0 otherwise */
|
||||
|
||||
typedef struct _HB_OT_Layout HB_OT_Layout;
|
||||
|
||||
HB_OT_Layout *
|
||||
hb_ot_layout_create (const char *font_data,
|
||||
int face_index);
|
||||
|
||||
void
|
||||
hb_ot_layout_destroy (HB_OT_Layout *layout);
|
||||
|
||||
/* TODO
|
||||
HB_OT_Layout *
|
||||
hb_ot_layout_create_sanitize (char *data,
|
||||
make_writable_func);
|
||||
*/
|
||||
|
||||
hb_ot_layout_glyph_properties_t
|
||||
hb_ot_layout_get_glyph_properties (HB_OT_Layout *layout,
|
||||
hb_ot_layout_glyph_t glyph);
|
||||
|
||||
void
|
||||
hb_ot_layout_set_glyph_properties (HB_OT_Layout *layout,
|
||||
hb_ot_layout_glyph_t glyph,
|
||||
hb_ot_layout_glyph_properties_t properties);
|
||||
|
||||
HB_END_DECLS();
|
||||
|
||||
#endif /* HB_OT_LAYOUT_OPEN_H */
|
||||
#endif /* HB_OT_LAYOUT_H */
|
||||
|
|
|
|||
|
|
@ -24,6 +24,7 @@
|
|||
* Red Hat Author(s): Behdad Esfahbod
|
||||
*/
|
||||
|
||||
#define HB_OT_LAYOUT_CC
|
||||
#include "hb-ot-layout-open-private.h"
|
||||
#include "hb-ot-layout-gdef-private.h"
|
||||
#include "hb-ot-layout-gsub-private.h"
|
||||
|
|
|
|||
Loading…
Reference in New Issue