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[autofit] Add functions to get standard widths for writing systems.

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We need the computed standard horizontal and vertical widths for the
emboldening calculation.  This method provides a convenient way to
extract it from writing-system-specific metrics structures, which
all script definitions must implement.

* src/autofit/aftypes.h (AF_WritingSystem_GetStdWidthsFunc): New
function type.
(AF_WritingSystemClassRec): New member `style_metrics_getstdw'.
(AF_DEFINE_WRITING_SYSTEM_CLASS): Updated.

* src/autofit/afcjk.c (af_cjk_get_standard_width): New function.
(af_cjk_writing_system_class): Updated.
* src/autofit/afdummy.c	(af_dummy_writing_system_class): Updated.
* src/autofit/afindic.c (af_cjk_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
* src/autofit/aflatin.c (af_latin_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
* src/autofit/aflatin.c (af_latin_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
This commit is contained in:
Nikolaus Waxweiler 2015-11-02 09:32:26 +01:00 committed by Werner Lemberg
parent b2a85ad32b
commit 37c401ac0a
7 changed files with 111 additions and 7 deletions
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24
ChangeLog
View File

@ -1,3 +1,27 @@
2015-11-02 Nikolaus Waxweiler <madigens@gmail.com>
[autofit] Add functions to get standard widths for writing systems.
We need the computed standard horizontal and vertical widths for the
emboldening calculation. This method provides a convenient way to
extract it from writing-system-specific metrics structures, which
all script definitions must implement.
* src/autofit/aftypes.h (AF_WritingSystem_GetStdWidthsFunc): New
function type.
(AF_WritingSystemClassRec): New member `style_metrics_getstdw'.
(AF_DEFINE_WRITING_SYSTEM_CLASS): Updated.
* src/autofit/afcjk.c (af_cjk_get_standard_width): New function.
(af_cjk_writing_system_class): Updated.
* src/autofit/afdummy.c (af_dummy_writing_system_class): Updated.
* src/autofit/afindic.c (af_cjk_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
* src/autofit/aflatin.c (af_latin_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
* src/autofit/aflatin.c (af_latin_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
2015-11-02 Nikolaus Waxweiler <madigens@gmail.com>
[autofit] Extend `AF_FaceGlobalsRec' to hold emboldening data.

18
src/autofit/afcjk.c
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@ -688,6 +688,22 @@
}
/* Extract standard_width from writing system/script specific */
/* metrics class. */
FT_LOCAL_DEF( void )
af_cjk_get_standard_widths( AF_CJKMetrics metrics,
FT_Pos* stdHW,
FT_Pos* stdVW )
{
if ( stdHW )
*stdHW = metrics->axis[AF_DIMENSION_VERT].standard_width;
if ( stdVW )
*stdVW = metrics->axis[AF_DIMENSION_HORZ].standard_width;
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
@ -2280,6 +2296,7 @@
(AF_WritingSystem_InitMetricsFunc) af_cjk_metrics_init,
(AF_WritingSystem_ScaleMetricsFunc)af_cjk_metrics_scale,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)af_cjk_get_standard_widths,
(AF_WritingSystem_InitHintsFunc) af_cjk_hints_init,
(AF_WritingSystem_ApplyHintsFunc) af_cjk_hints_apply
@ -2299,6 +2316,7 @@
(AF_WritingSystem_InitMetricsFunc) NULL,
(AF_WritingSystem_ScaleMetricsFunc)NULL,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)NULL,
(AF_WritingSystem_InitHintsFunc) NULL,
(AF_WritingSystem_ApplyHintsFunc) NULL

1
src/autofit/afdummy.c
View File

@ -65,6 +65,7 @@
(AF_WritingSystem_InitMetricsFunc) NULL,
(AF_WritingSystem_ScaleMetricsFunc)NULL,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)NULL,
(AF_WritingSystem_InitHintsFunc) af_dummy_hints_init,
(AF_WritingSystem_ApplyHintsFunc) af_dummy_hints_apply

18
src/autofit/afindic.c
View File

@ -89,6 +89,22 @@
}
/* Extract standard_width from writing system/script specific */
/* metrics class. */
static void
af_indic_get_standard_widths( AF_CJKMetrics metrics,
FT_Pos* stdHW,
FT_Pos* stdVW )
{
if ( stdHW )
*stdHW = metrics->axis[AF_DIMENSION_VERT].standard_width;
if ( stdVW )
*stdVW = metrics->axis[AF_DIMENSION_HORZ].standard_width;
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
@ -108,6 +124,7 @@
(AF_WritingSystem_InitMetricsFunc) af_indic_metrics_init,
(AF_WritingSystem_ScaleMetricsFunc)af_indic_metrics_scale,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)af_indic_get_standard_widths,
(AF_WritingSystem_InitHintsFunc) af_indic_hints_init,
(AF_WritingSystem_ApplyHintsFunc) af_indic_hints_apply
@ -127,6 +144,7 @@
(AF_WritingSystem_InitMetricsFunc) NULL,
(AF_WritingSystem_ScaleMetricsFunc)NULL,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)NULL,
(AF_WritingSystem_InitHintsFunc) NULL,
(AF_WritingSystem_ApplyHintsFunc) NULL

17
src/autofit/aflatin.c
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@ -1149,6 +1149,22 @@
}
/* Extract standard_width from writing system/script specific */
/* metrics class. */
FT_LOCAL_DEF( void )
af_latin_get_standard_widths( AF_LatinMetrics metrics,
FT_Pos* stdHW,
FT_Pos* stdVW )
{
if ( stdHW )
*stdHW = metrics->axis[AF_DIMENSION_VERT].standard_width;
if ( stdVW )
*stdVW = metrics->axis[AF_DIMENSION_HORZ].standard_width;
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
@ -2944,6 +2960,7 @@
(AF_WritingSystem_InitMetricsFunc) af_latin_metrics_init,
(AF_WritingSystem_ScaleMetricsFunc)af_latin_metrics_scale,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)af_latin_get_standard_widths,
(AF_WritingSystem_InitHintsFunc) af_latin_hints_init,
(AF_WritingSystem_ApplyHintsFunc) af_latin_hints_apply

17
src/autofit/aflatin2.c
View File

@ -693,6 +693,22 @@
}
/* Extract standard_width from writing system/script specific */
/* metrics class. */
FT_LOCAL_DEF( void )
af_latin2_get_standard_widths( AF_LatinMetrics metrics,
FT_Pos* stdHW,
FT_Pos* stdVW )
{
if ( stdHW )
*stdHW = metrics->axis[AF_DIMENSION_VERT].standard_width;
if ( stdVW )
*stdVW = metrics->axis[AF_DIMENSION_HORZ].standard_width;
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
@ -2392,6 +2408,7 @@
(AF_WritingSystem_InitMetricsFunc) af_latin2_metrics_init,
(AF_WritingSystem_ScaleMetricsFunc)af_latin2_metrics_scale,
(AF_WritingSystem_DoneMetricsFunc) NULL,
(AF_WritingSystem_GetStdWidthsFunc)af_latin2_get_standard_widths,
(AF_WritingSystem_InitHintsFunc) af_latin2_hints_init,
(AF_WritingSystem_ApplyHintsFunc) af_latin2_hints_apply

23
src/autofit/aftypes.h
View File

@ -211,6 +211,11 @@ extern void* _af_debug_hints;
typedef void
(*AF_WritingSystem_DoneMetricsFunc)( AF_StyleMetrics metrics );
typedef void
(*AF_WritingSystem_GetStdWidthsFunc)( AF_StyleMetrics metrics,
FT_Pos* stdHW,
FT_Pos* stdVW );
typedef FT_Error
(*AF_WritingSystem_InitHintsFunc)( AF_GlyphHints hints,
@ -276,6 +281,7 @@ extern void* _af_debug_hints;
AF_WritingSystem_InitMetricsFunc style_metrics_init;
AF_WritingSystem_ScaleMetricsFunc style_metrics_scale;
AF_WritingSystem_DoneMetricsFunc style_metrics_done;
AF_WritingSystem_GetStdWidthsFunc style_metrics_getstdw;
AF_WritingSystem_InitHintsFunc style_hints_init;
AF_WritingSystem_ApplyHintsFunc style_hints_apply;
@ -489,6 +495,7 @@ extern void* _af_debug_hints;
m_init, \
m_scale, \
m_done, \
m_stdw, \
h_init, \
h_apply ) \
FT_CALLBACK_TABLE_DEF \
@ -501,6 +508,7 @@ extern void* _af_debug_hints;
m_init, \
m_scale, \
m_done, \
m_stdw, \
\
h_init, \
h_apply \
@ -570,16 +578,17 @@ extern void* _af_debug_hints;
FT_LOCAL_DEF( void ) \
FT_Init_Class_ ## writing_system_class( AF_WritingSystemClassRec* ac ) \
{ \
ac->writing_system = system; \
ac->writing_system = system; \
\
ac->style_metrics_size = m_size; \
ac->style_metrics_size = m_size; \
\
ac->style_metrics_init = m_init; \
ac->style_metrics_scale = m_scale; \
ac->style_metrics_done = m_done; \
ac->style_metrics_init = m_init; \
ac->style_metrics_scale = m_scale; \
ac->style_metrics_done = m_done; \
ac->style_metrics_getstdw = m_stdw; \
\
ac->style_hints_init = h_init; \
ac->style_hints_apply = h_apply; \
ac->style_hints_init = h_init; \
ac->style_hints_apply = h_apply; \
}