ref: 9657ef0598f29d50344956e6c7e2923ad9137bd3
dir: /src/otlayout/otlcommn.h/
/***************************************************************************
*
* otlcommn.h
*
* OpenType Layout common tables processing
*
* this header provides several routines used to process common table
* found in various OpenType Layout tables..
*/
#ifndef __OTLAYOUT_COMMON_H__
#define __OTLAYOUT_COMMON_H__
#include "otlayout.h"
OTL_BEGIN_HEADER
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** COVERAGE TABLE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate coverage table */
OTL_LOCALDEF( void )
otl_coverage_validate( OTL_Bytes base,
OTL_Validator valid );
/* return number of covered glyphs */
OTL_LOCALDEF( OTL_UInt )
otl_coverage_get_count( OTL_Bytes base );
/* return the coverage index corresponding to a glyph glyph index. */
/* returns -1 if the glyph isn't covered.. */
OTL_LOCALDEF( OTL_Int )
otl_coverage_get_index( OTL_Bytes base,
OTL_UInt glyph_index );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CLASS DEFINITION TABLE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate class definition table */
OTL_LOCALDEF( void )
otl_class_definition_validate( OTL_Bytes table,
OTL_Validator valid );
/* return class value for a given glyph index */
OTL_LOCALDEF( OTL_UInt )
otl_class_definition_get_value( OTL_Bytes table,
OTL_UInt glyph_index );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** DEVICE TABLE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate a device table */
OTL_LOCALDEF( void )
otl_device_table_validate( OTL_Bytes table,
OTL_Validator valid );
/* return a device table's first size */
OTL_LOCALDEF( OTL_UInt )
otl_device_table_get_start( OTL_Bytes table );
/* return a device table's last size */
OTL_LOCALDEF( OTL_UInt )
otl_device_table_get_end( OTL_Bytes table );
/* return pixel adjustment for a given size */
OTL_LOCALDEF( OTL_Int )
otl_device_table_get_delta( OTL_Bytes table,
OTL_UInt size );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** LOOKUPS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate lookup table */
OTL_LOCALDEF( void )
otl_lookup_validate( OTL_Bytes table,
OTL_Validator valid );
/* return number of sub-tables in a lookup */
OTL_LOCALDEF( OTL_UInt )
otl_lookup_get_count( OTL_Bytes table );
/* return lookup sub-table */
OTL_LOCALDEF( OTL_Bytes )
otl_lookup_get_table( OTL_Bytes table,
OTL_UInt index );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** LOOKUP LISTS *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate lookup list */
OTL_LOCALDEF( void )
otl_lookup_list_validate( OTL_Bytes table,
OTL_Validator valid );
/* return number of lookups in list */
OTL_LOCALDEF( OTL_UInt )
otl_lookup_list_get_count( OTL_Bytes table );
/* return a given lookup from a list */
OTL_LOCALDEF( OTL_Bytes )
otl_lookup_list_get_lookup( OTL_Bytes table,
OTL_UInt index );
/* return lookup sub-table from a list */
OTL_LOCALDEF( OTL_Bytes )
otl_lookup_list_get_table( OTL_Bytes table,
OTL_UInt lookup_index,
OTL_UInt table_index );
/* iterate over lookup list */
OTL_LOCALDEF( void )
otl_lookup_list_foreach( OTL_Bytes table,
OTL_ForeachFunc func,
OTL_Pointer func_data );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** FEATURES *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate feature table */
OTL_LOCALDEF( void )
otl_feature_validate( OTL_Bytes table,
OTL_Validator valid );
/* return feature's lookup count */
OTL_LOCALDEF( OTL_UInt )
otl_feature_get_count( OTL_Bytes table );
/* get several lookups indices from a feature. returns the number of lookups */
/* grabbed */
OTL_LOCALDEF( OTL_UInt )
otl_feature_get_lookups( OTL_Bytes table,
OTL_UInt start,
OTL_UInt count,
OTL_UInt *lookups );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** FEATURE LIST *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/* validate a feature list */
OTL_LOCALDEF( void )
otl_feature_list_validate( OTL_Bytes table,
OTL_Validator valid );
/* return number of features in list */
OTL_LOCALDEF( OTL_UInt )
otl_feature_list_get_count( OTL_Bytes table );
/* return a given feature from a list */
OTL_LOCALDEF( OTL_Bytes )
otl_feature_list_get_feature( OTL_Bytes table,
OTL_UInt index );
/* iterate over all features in a list */
OTL_LOCALDEF( void )
otl_feature_list_foreach( OTL_Bytes table,
OTL_ForeachFunc func,
OTL_Pointer func_data );
/* */
OTL_END_HEADER
#endif /* __OTLAYOUT_COMMON_H__ */