Commit 37c401ac0a62b2abb0a12df87881fa3f05159582
2015-11-02T09:32:26
[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.
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diff --git a/ChangeLog b/ChangeLog
index 697167b..c380fb5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,29 @@
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.
* src/autofit/afglobal.h (AF_FaceGlobalsRec): Add fields.
diff --git a/src/autofit/afcjk.c b/src/autofit/afcjk.c
index 0ade4be..792950d 100644
--- a/src/autofit/afcjk.c
+++ b/src/autofit/afcjk.c
@@ -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
diff --git a/src/autofit/afdummy.c b/src/autofit/afdummy.c
index 18dd301..9142c78 100644
--- a/src/autofit/afdummy.c
+++ b/src/autofit/afdummy.c
@@ -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
diff --git a/src/autofit/afindic.c b/src/autofit/afindic.c
index 05b6bdd..59b14d7 100644
--- a/src/autofit/afindic.c
+++ b/src/autofit/afindic.c
@@ -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
diff --git a/src/autofit/aflatin.c b/src/autofit/aflatin.c
index 363f721..5645aaf 100644
--- a/src/autofit/aflatin.c
+++ b/src/autofit/aflatin.c
@@ -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
diff --git a/src/autofit/aflatin2.c b/src/autofit/aflatin2.c
index 0380ffc..2fb7d1d 100644
--- a/src/autofit/aflatin2.c
+++ b/src/autofit/aflatin2.c
@@ -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
diff --git a/src/autofit/aftypes.h b/src/autofit/aftypes.h
index 43b3800..cbe8bc2 100644
--- a/src/autofit/aftypes.h
+++ b/src/autofit/aftypes.h
@@ -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; \
}