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[autofit] Extend `AF_FaceGlobalsRec' to hold emboldening data.

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* src/autofit/afglobal.h (AF_FaceGlobalsRec): Add fields.

* src/autofit/afglobal.c (af_face_globals_new): Initialize new
fields.
(af_face_globals_free): Reset new fields.
This commit is contained in:
Nikolaus Waxweiler 2015-11-02 09:20:32 +01:00 committed by Werner Lemberg
parent d682e51062
commit b2a85ad32b
3 changed files with 46 additions and 7 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2015-11-02 Nikolaus Waxweiler <madigens@gmail.com>
[autofit] Extend `AF_FaceGlobalsRec' to hold emboldening data.
* src/autofit/afglobal.h (AF_FaceGlobalsRec): Add fields.
* src/autofit/afglobal.c (af_face_globals_new): Initialize new
fields.
(af_face_globals_free): Reset new fields.
2015-11-02 Nikolaus Waxweiler <madigens@gmail.com>
[autofit] Add stem-darkening properties.

27
src/autofit/afglobal.c
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@ -350,11 +350,17 @@
(FT_ULong)face->num_glyphs * sizeof ( FT_UShort ) ) )
goto Exit;
globals->face = face;
globals->glyph_count = face->num_glyphs;
globals->face = face;
globals->glyph_count = face->num_glyphs;
/* right after the globals structure come the glyph styles */
globals->glyph_styles = (FT_UShort*)( globals + 1 );
globals->module = module;
globals->glyph_styles = (FT_UShort*)( globals + 1 );
globals->module = module;
globals->stem_darkening_for_ppem = 0;
globals->darken_x = 0;
globals->darken_y = 0;
globals->standard_vertical_width = 0;
globals->standard_horizontal_width = 0;
globals->scale_down_factor = 0;
#ifdef FT_CONFIG_OPTION_USE_HARFBUZZ
globals->hb_font = hb_ft_font_create( face, NULL );
@ -406,9 +412,16 @@
globals->hb_font = NULL;
#endif
globals->glyph_count = 0;
globals->glyph_styles = NULL; /* no need to free this one! */
globals->face = NULL;
globals->glyph_count = 0;
globals->stem_darkening_for_ppem = 0;
globals->darken_x = 0;
globals->darken_y = 0;
globals->standard_vertical_width = 0;
globals->standard_horizontal_width = 0;
globals->scale_down_factor = 0;
/* no need to free this one! */
globals->glyph_styles = NULL;
globals->face = NULL;
FT_FREE( globals );
}

16
src/autofit/afglobal.h
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@ -117,6 +117,22 @@ FT_BEGIN_HEADER
AF_StyleMetrics metrics[AF_STYLE_MAX];
/* Compute darkening amount once per size. Use this to check whether */
/* darken_{x,y} needs to be recomputed. */
FT_UShort stem_darkening_for_ppem;
/* Copy from e.g. AF_LatinMetrics.axis[AF_DIMENSION_HORZ] */
/* to compute the darkening amount. */
FT_Pos standard_vertical_width;
/* Copy from e.g. AF_LatinMetrics.axis[AF_DIMENSION_VERT] */
/* to compute the darkening amount. */
FT_Pos standard_horizontal_width;
/* The actual amount to darken a glyph along the X axis. */
FT_Pos darken_x;
/* The actual amount to darken a glyph along the Y axis. */
FT_Pos darken_y;
/* Amount to scale down by to keep emboldened points */
/* on the Y-axis in pre-computed blue zones. */
FT_Fixed scale_down_factor;
AF_Module module; /* to access global properties */
} AF_FaceGlobalsRec;