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#ifndef _EVAS_FONT_DEFAULT_WALK_X
#define _EVAS_FONT_DEFAULT_WALK_X
/* Macros for text walking */
/**
* @def EVAS_FONT_WALK_TEXT_INIT
* @internal
* This macro defines the variables that will later be used with the following
* macros, and by font handling functions.
* @see EVAS_FONT_WALK_TEXT_START
* @see EVAS_FONT_WALK_TEXT_WORK
* @see EVAS_FONT_WALK_TEXT_END
*/
# define EVAS_FONT_WALK_TEXT_INIT() \
int _pen_x = 0, _pen_y = 0; \
Evas_Coord _start_pen = (text_props->info && \
(text_props->start > 0)) ? \
text_props->info->glyph[text_props->start - 1].pen_after : 0 ; \
size_t char_index; \
(void) _pen_y; /* Sometimes it won't be used */
/* Visual walk helper macros */
#ifdef OT_SUPPORT
#define _EVAS_FONT_WALK_TEXT_START() \
Evas_Font_OT_Info *_ot_itr = (text_props->info) ? \
text_props->info->ot + text_props->start : NULL; \
if (!_ot_itr) break; \
for (char_index = 0 ; char_index < text_props->len ; char_index++, _glyph_itr++, _ot_itr++) \
{
#else
#define _EVAS_FONT_WALK_TEXT_START() \
for (char_index = 0 ; char_index < text_props->len ; char_index++, _glyph_itr++) \
{
#endif
/**
* @def EVAS_FONT_WALK_TEXT_START
* @internal
* This runs through the text in visual order while updating char_index,
* which is the current index in the text.
* Does not end with a ;
* Take a look at EVAS_FONT_WALK_X_OFF and the like.
* @see EVAS_FONT_WALK_TEXT_INIT
* @see EVAS_FONT_WALK_TEXT_WORK
* @see EVAS_FONT_WALK_TEXT_END
*/
#define EVAS_FONT_WALK_TEXT_START() \
do \
{ \
Evas_Font_Glyph_Info *_glyph_itr = (text_props->info) ? \
text_props->info->glyph + text_props->start : NULL; \
if (!_glyph_itr) break; \
_EVAS_FONT_WALK_TEXT_START()
/*FIXME: doc */
#ifdef OT_SUPPORT
# define EVAS_FONT_WALK_X_OFF \
(EVAS_FONT_ROUND_26_6_TO_INT(EVAS_FONT_OT_X_OFF_GET(*_ot_itr)))
# define EVAS_FONT_WALK_Y_OFF \
(EVAS_FONT_ROUND_26_6_TO_INT(EVAS_FONT_OT_Y_OFF_GET(*_ot_itr)))
# define EVAS_FONT_WALK_POS \
(EVAS_FONT_OT_POS_GET(*_ot_itr) - text_props->text_offset)
# define EVAS_FONT_WALK_POS_NEXT \
((!EVAS_FONT_WALK_IS_LAST) ? \
EVAS_FONT_OT_POS_GET(*(_ot_itr + 1)) - \
text_props->text_offset : \
EVAS_FONT_WALK_POS \
)
# define EVAS_FONT_WALK_POS_PREV \
((char_index > 0) ? \
EVAS_FONT_OT_POS_GET(*(_ot_itr - 1)) - \
text_props->text_offset : \
EVAS_FONT_WALK_POS \
)
#else
# define EVAS_FONT_WALK_X_OFF 0
# define EVAS_FONT_WALK_Y_OFF 0
# define EVAS_FONT_WALK_POS \
((text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) ? \
(text_props->len - char_index - 1) : \
(char_index))
# define EVAS_FONT_WALK_POS_NEXT \
((!EVAS_FONT_WALK_IS_LAST) ? \
((text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) ? \
text_props->len - char_index - 2 \
: (char_index + 1)) : \
EVAS_FONT_WALK_POS)
# define EVAS_FONT_WALK_POS_PREV \
((char_index > 0) ? \
((text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) ? \
text_props->len - char_index \
: (char_index - 1)) : \
EVAS_FONT_WALK_POS)
#endif
#define EVAS_FONT_WALK_IS_VISIBLE (_glyph_itr->index != 0)
#define EVAS_FONT_WALK_X_BEAR (_glyph_itr->x_bear)
#define EVAS_FONT_WALK_Y_BEAR (fg->glyph_out->top)
#define EVAS_FONT_WALK_X_ADV ((_glyph_itr > text_props->info->glyph) ? \
_glyph_itr->pen_after - (_glyph_itr - 1)->pen_after : \
_glyph_itr->pen_after)
#define EVAS_FONT_WALK_WIDTH (_glyph_itr->width)
#define EVAS_FONT_WALK_INDEX (_glyph_itr->index)
#define EVAS_FONT_WALK_PEN_X (_pen_x)
#define EVAS_FONT_WALK_PEN_X_AFTER (_glyph_itr->pen_after - _start_pen)
#define EVAS_FONT_WALK_PEN_Y (EVAS_FONT_ROUND_26_6_TO_INT(_pen_y))
#define EVAS_FONT_WALK_Y_ADV (0)
#define EVAS_FONT_WALK_IS_LAST \
(char_index + 1 == text_props->len)
#define EVAS_FONT_WALK_IS_FIRST \
(char_index == 0)
#define EVAS_FONT_WALK_LEN (text_props->len)
/**
* @def EVAS_FONT_WALK_TEXT_WORK
* @internal
* This macro actually updates the values mentioned in EVAS_FONT_WALK_TEXT_START
* according to the current positing in the walk.
* @see EVAS_FONT_WALK_TEXT_START
* @see EVAS_FONT_WALK_TEXT_INIT
* @see EVAS_FONT_WALK_TEXT_END
*/
#define EVAS_FONT_WALK_TEXT_WORK() do {} while(0)
/**
* @def EVAS_FONT_WALK_TEXT_END
* @internal
* Closes EVAS_FONT_WALK_TEXT_START, needs to end with a ;
* @see EVAS_FONT_WALK_TEXT_START
* @see EVAS_FONT_WALK_TEXT_INIT
* @see EVAS_FONT_WALK_TEXT_WORK
*/
#define EVAS_FONT_WALK_TEXT_END() \
if (EVAS_FONT_WALK_IS_VISIBLE) \
{ \
_pen_x = _glyph_itr->pen_after - _start_pen; \
} \
} \
} \
while(0)
#endif
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