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#ifndef _EVAS_BIDI_UTILS
#define _EVAS_BIDI_UTILS
/**
* @internal
* @addtogroup Evas_Utils
*
* @{
*/
/**
* @internal
* @defgroup Evas_BiDi Evas BiDi utility functions
*
* This set of functions and types helps evas handle BiDi strings correctly.
* @todo Document types, structures and macros.
*
* @{
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_FRIBIDI
# define USE_FRIBIDI
# define BIDI_SUPPORT
#endif
#include <Eina.h>
#ifdef USE_FRIBIDI
# include <fribidi.h>
#endif
/* abstract fribidi - we statically define sizes here because otherwise we would
* have to ifdef everywhere (because function decorations may change with/without
* bidi support)
* These types should only be passed as pointers! i.e do not directely use any of
* these types in function declarations. Defining as void should help ensuring that.
*/
/* Evas_BiDi_Direction is defined in evas.h */
#ifdef USE_FRIBIDI
# define _EVAS_BIDI_TYPEDEF(type) \
typedef FriBidi ## type EvasBiDi ## type
#else
# define _EVAS_BIDI_TYPEDEF(type) \
typedef void EvasBiDi ## type
#endif
#if 0 /* We are using Eina_Unicode instead */
_EVAS_BIDI_TYPEDEF(Char);
#endif
_EVAS_BIDI_TYPEDEF(CharType);
_EVAS_BIDI_TYPEDEF(ParType);
_EVAS_BIDI_TYPEDEF(StrIndex);
_EVAS_BIDI_TYPEDEF(Level);
_EVAS_BIDI_TYPEDEF(JoiningType);
typedef struct _Evas_BiDi_Paragraph_Props Evas_BiDi_Paragraph_Props;
typedef struct _Evas_BiDi_Props Evas_BiDi_Props;
/* This structure defines a set of properties of a BiDi string. In case of a
* non-bidi string, all values should be NULL.
* To check if a structure describes a bidi string or not, use the macro
* EVAS_BIDI_IS_BIDI_PROP. RTL-only strings are also treated as bidi ATM.
*/
struct _Evas_BiDi_Paragraph_Props {
EvasBiDiCharType *char_types; /* BiDi char types */
EvasBiDiLevel *embedding_levels; /* BiDi embedding levels */
int refcount; /* The number of references to this object */
#ifdef USE_FRIBIDI
EvasBiDiParType direction;
#endif
};
#include "Evas.h"
struct _Evas_BiDi_Props
{
Evas_BiDi_Direction dir;
};
#ifdef USE_FRIBIDI
#define EVAS_BIDI_PARAGRAPH_NEUTRAL FRIBIDI_PAR_ON
#define EVAS_BIDI_PARAGRAPH_LTR FRIBIDI_PAR_LTR
#define EVAS_BIDI_PARAGRAPH_RTL FRIBIDI_PAR_RTL
#define EVAS_BIDI_PARAGRAPH_WLTR FRIBIDI_PAR_WLTR
#define EVAS_BIDI_PARAGRAPH_WRTL FRIBIDI_PAR_WRTL
#define EVAS_BIDI_DIRECTION_IS_RTL(x) \
((((x) == EVAS_BIDI_PARAGRAPH_RTL) || \
((x) == EVAS_BIDI_PARAGRAPH_WRTL)) ? \
EINA_TRUE : EINA_FALSE)
#define EVAS_BIDI_PARAGRAPH_DIRECTION_IS_RTL(x) \
((x) && EVAS_BIDI_DIRECTION_IS_RTL((x)->direction))
#define EVAS_BIDI_PAR_TYPE_TO_DIRECTION(x) \
_evas_bidi_par_type_to_direction(x)
static inline Evas_BiDi_Direction
_evas_bidi_par_type_to_direction(EvasBiDiParType par_type)
{
switch (par_type)
{
case EVAS_BIDI_PARAGRAPH_LTR:
case EVAS_BIDI_PARAGRAPH_WLTR:
return EVAS_BIDI_DIRECTION_LTR;
break;
case EVAS_BIDI_PARAGRAPH_RTL:
case EVAS_BIDI_PARAGRAPH_WRTL:
return EVAS_BIDI_DIRECTION_RTL;
break;
case EVAS_BIDI_PARAGRAPH_NEUTRAL:
default:
return EVAS_BIDI_DIRECTION_NEUTRAL;
break;
}
}
# define evas_bidi_position_visual_to_logical(list, position) \
(list) ? list[position] : position;
EvasBiDiStrIndex
evas_bidi_position_logical_to_visual(EvasBiDiStrIndex *v_to_l, int len, EvasBiDiStrIndex position);
EvasBiDiStrIndex
evas_bidi_position_reverse(const Evas_BiDi_Props *props, int len, EvasBiDiStrIndex position);
Eina_Bool
evas_bidi_is_rtl_str(const Eina_Unicode *str);
Eina_Bool
evas_bidi_is_rtl_char(const Evas_BiDi_Paragraph_Props *bidi_props, size_t start, EvasBiDiStrIndex index);
int
evas_bidi_end_of_run_get(const Evas_BiDi_Paragraph_Props *bidi_props, size_t start, int len);
Eina_Bool
evas_bidi_props_reorder_line(Eina_Unicode *eina_ustr, size_t start, size_t len, const Evas_BiDi_Paragraph_Props *props, EvasBiDiStrIndex **_v_to_l);
Evas_BiDi_Paragraph_Props *
evas_bidi_paragraph_props_get(const Eina_Unicode *eina_ustr, size_t len, int *segment_idxs, EvasBiDiParType base_bidi) EINA_ARG_NONNULL(1) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
void
evas_bidi_props_copy_and_ref(const Evas_BiDi_Props *src, Evas_BiDi_Props *dst);
EAPI Eina_Bool
evas_bidi_shape_string(Eina_Unicode *eina_ustr, const Evas_BiDi_Paragraph_Props *bidi_props, size_t start, size_t len);
void
evas_bidi_props_clean(Evas_BiDi_Props *intl_props) EINA_ARG_NONNULL(1);
void
evas_bidi_paragraph_props_clean(Evas_BiDi_Paragraph_Props *bidi_props) EINA_ARG_NONNULL(1);
Evas_BiDi_Paragraph_Props *
evas_bidi_paragraph_props_ref(Evas_BiDi_Paragraph_Props *bidi_props) EINA_ARG_NONNULL(1);
void
evas_bidi_paragraph_props_unref(Evas_BiDi_Paragraph_Props *bidi_props) EINA_ARG_NONNULL(1);
Evas_BiDi_Paragraph_Props *
evas_bidi_paragraph_props_new(void) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
int *
evas_bidi_segment_idxs_get(const Eina_Unicode *str, const char *delim) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT EINA_MALLOC;
#endif
/**
* @}
*/
/**
* @}
*/
#endif
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