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[style] New experimental API, hb_style_get_value

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Searches variation axes of a hb_font_t object for a specific axis first,
if not set, then tries to get default style values from different
tables of the font.
This commit is contained in:
Ebrahim Byagowi 2019-08-04 11:31:31 +04:30
parent d67553d12f
commit 22037499b4
14 changed files with 457 additions and 4 deletions
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6
docs/harfbuzz-sections.txt
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@ -714,6 +714,12 @@ hb_shape_plan_set_user_data
hb_shape_plan_t
</SECTION>
<SECTION>
<FILE>hb-style</FILE>
hb_style_tag_t
hb_style_get_value
</SECTION>
<SECTION>
<FILE>hb-unicode</FILE>
HB_UNICODE_MAX

2
src/Makefile.sources
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@ -159,6 +159,7 @@ HB_BASE_sources = \
hb-shaper.hh \
hb-static.cc \
hb-string-array.hh \
hb-style.cc \
hb-ucd-table.hh \
hb-ucd.cc \
hb-unicode-emoji-table.hh \
@ -213,6 +214,7 @@ HB_BASE_headers = \
hb-set.h \
hb-shape-plan.h \
hb-shape.h \
hb-style.h \
hb-unicode.h \
hb-version.h \
hb.h \

1
src/harfbuzz.cc
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@ -43,6 +43,7 @@
#include "hb-shape.cc"
#include "hb-shaper.cc"
#include "hb-static.cc"
#include "hb-style.cc"
#include "hb-ucd.cc"
#include "hb-unicode.cc"
#include "hb-glib.cc"

2
src/hb-config.hh
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@ -76,7 +76,7 @@
#define HB_NO_SETLOCALE
#define HB_NO_OT_FONT_GLYPH_NAMES
#define HB_NO_OT_SHAPE_FRACTIONS
#define HB_NO_STAT
#define HB_NO_STYLE
#define HB_NO_SUBSET_LAYOUT
#define HB_NO_VAR
#endif

5
src/hb-ot-face-table-list.hh
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@ -53,13 +53,14 @@ HB_OT_ACCELERATOR (OT, cmap)
HB_OT_TABLE (OT, hhea)
HB_OT_ACCELERATOR (OT, hmtx)
HB_OT_TABLE (OT, OS2)
#if !defined(HB_NO_OT_FONT_GLYPH_NAMES) || !defined(HB_NO_METRICS)
#if !defined(HB_NO_OT_FONT_GLYPH_NAMES) || !defined(HB_NO_METRICS) || !defined(HB_NO_STYLE)
HB_OT_ACCELERATOR (OT, post)
#endif
#ifndef HB_NO_NAME
HB_OT_ACCELERATOR (OT, name)
#endif
#ifndef HB_NO_STAT
#ifndef HB_NO_STYLE
HB_OT_TABLE (AAT, fdsc)
HB_OT_TABLE (OT, STAT)
#endif
#ifndef HB_NO_META

73
src/hb-ot-stat-table.hh
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@ -59,6 +59,9 @@ enum
struct AxisValueFormat1
{
unsigned int get_axis_index () const { return axisIndex; }
float get_value () const { return value.to_float (); }
hb_ot_name_id_t get_value_name_id () const { return valueNameID; }
bool sanitize (hb_sanitize_context_t *c) const
@ -84,6 +87,9 @@ struct AxisValueFormat1
struct AxisValueFormat2
{
unsigned int get_axis_index () const { return axisIndex; }
float get_value () const { return nominalValue.to_float (); }
hb_ot_name_id_t get_value_name_id () const { return valueNameID; }
bool sanitize (hb_sanitize_context_t *c) const
@ -113,6 +119,9 @@ struct AxisValueFormat2
struct AxisValueFormat3
{
unsigned int get_axis_index () const { return axisIndex; }
float get_value () const { return value.to_float (); }
hb_ot_name_id_t get_value_name_id () const { return valueNameID; }
bool sanitize (hb_sanitize_context_t *c) const
@ -140,6 +149,9 @@ struct AxisValueFormat3
struct AxisValueRecord
{
unsigned int get_axis_index () const { return axisIndex; }
float get_value () const { return value.to_float (); }
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
@ -157,6 +169,9 @@ struct AxisValueRecord
struct AxisValueFormat4
{
const AxisValueRecord &get_axis_record (unsigned int axis_index) const
{ return axisValues.as_array (axisCount)[axis_index]; }
hb_ot_name_id_t get_value_name_id () const { return valueNameID; }
bool sanitize (hb_sanitize_context_t *c) const
@ -183,6 +198,30 @@ struct AxisValueFormat4
struct AxisValue
{
bool get_value (unsigned int axis_index) const
{
switch (u.format)
{
case 1: return u.format1.get_value ();
case 2: return u.format2.get_value ();
case 3: return u.format3.get_value ();
case 4: return u.format4.get_axis_record (axis_index).get_value ();
default:return 0;
}
}
unsigned int get_axis_index () const
{
switch (u.format)
{
case 1: return u.format1.get_axis_index ();
case 2: return u.format2.get_axis_index ();
case 3: return u.format3.get_axis_index ();
/* case 4: Makes more sense for variable fonts which are handled by fvar in hb-style */
default:return -1;
}
}
hb_ot_name_id_t get_value_name_id () const
{
switch (u.format)
@ -226,6 +265,8 @@ struct AxisValue
struct StatAxisRecord
{
int cmp (hb_tag_t key) const { return tag.cmp (key); }
hb_ot_name_id_t get_name_id () const { return nameID; }
bool sanitize (hb_sanitize_context_t *c) const
@ -251,6 +292,38 @@ struct STAT
bool has_data () const { return version.to_int (); }
bool find_axis_index (hb_tag_t tag, unsigned int *axis_index) const
{
hb_array_t<const StatAxisRecord> axes = get_design_axes ();
/* TODO: add lfind in hb_array_t and use it in here and fvar's find_axis_info */
for (unsigned int i = 0; i < axes.length; i++)
if (!axes[i].cmp (tag))
{
*axis_index = i;
return true;
}
return false;
}
bool get_value (hb_tag_t tag, float *value) const
{
unsigned int axis_index;
if (!find_axis_index (tag, &axis_index)) return false;
hb_array_t<const OffsetTo<AxisValue>> axis_values = get_axis_value_offsets ();
for (unsigned int i = 0; i < axis_values.length; i++)
{
const AxisValue& axis_value = (this + axis_values[i]);
if (axis_value.get_axis_index () == axis_index)
{
if (value)
*value = axis_value.get_value (axis_index);
return true;
}
}
return false;
}
unsigned get_design_axis_count () const { return designAxisCount; }
hb_ot_name_id_t get_axis_record_name_id (unsigned axis_record_index) const

110
src/hb-style.cc Normal file
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@ -0,0 +1,110 @@
/*
* Copyright © 2019 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#include "hb.hh"
#ifndef HB_NO_STYLE
#include "hb-aat-fdsc-table.hh"
#include "hb-ot-var-avar-table.hh"
#include "hb-ot-var-fvar-table.hh"
#include "hb-ot-stat-table.hh"
#include "hb-ot-os2-table.hh"
#include "hb-ot-head-table.hh"
#include "hb-ot-post-table.hh"
#include "hb-ot-face.hh"
/**
* hb_style_get_value:
* @font: a #hb_font_t object.
* @style_tag: a style tag.
*
* Searches variation axes of a hb_font_t object for a specific axis first,
* if not set, then tries to get default style values from different
* tables of the font.
*
* Returns: Corresponding axis or default value to a style tag.
*
* Since: REPLACEME
**/
float
hb_style_get_value (hb_font_t *font, hb_style_tag_t style_tag)
{
hb_face_t *face = font->face;
#ifndef HB_NO_VAR
hb_ot_var_axis_info_t axis;
if (hb_ot_var_find_axis_info (face, style_tag, &axis))
{
if (axis.axis_index < font->num_coords) return font->design_coords[axis.axis_index];
/* If a face is variable, fvar's default_value is better than STAT records */
return axis.default_value;
}
#endif
/* STAT */
float value;
if (face->table.STAT->get_value (style_tag, &value))
return value;
/* Check Apple's fdsc as OS2 table is optional in AAT */
const AAT::FontDescriptor &descriptor = face->table.fdsc->get_descriptor (style_tag);
if (descriptor.has_data ())
{
float value = descriptor.get_value ();
/* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6fdsc.html */
/* Percent weight relative to regular weight. */
if (style_tag == HB_STYLE_TAG_WEIGHT) value *= 400.f;
/* Percent width relative to regular width. */
if (style_tag == HB_STYLE_TAG_WIDTH) value *= 100.f;
return value;
}
switch ((unsigned) style_tag)
{
case HB_STYLE_TAG_ITALIC:
return face->table.OS2->is_italic () || face->table.head->is_italic () ? 1 : 0;
case HB_STYLE_TAG_OPTICAL_SIZE:
{
unsigned int lower, upper;
return face->table.OS2->v5 ().get_optical_size (&lower, &upper)
? (float) (lower + upper) / 2.f
: 12.f;
}
case HB_STYLE_TAG_SLANT:
return face->table.post->table->italicAngle.to_float ();
case HB_STYLE_TAG_WIDTH:
return face->table.OS2->has_data ()
? face->table.OS2->get_width ()
: (face->table.head->is_condensed () ? 75 : 100);
case HB_STYLE_TAG_WEIGHT:
return face->table.OS2->has_data ()
? face->table.OS2->usWeightClass
: (face->table.head->is_bold () ? 700 : 400);
default:
return 0;
}
}
#endif

75
src/hb-style.h Normal file
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@ -0,0 +1,75 @@
/*
* Copyright © 2019 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef HB_H_IN
#error "Include <hb.h> instead."
#endif
#ifndef HB_STYLE_H
#define HB_STYLE_H
#include "hb.h"
HB_BEGIN_DECLS
/**
* hb_style_tag_t:
* @HB_STYLE_TAG_ITALIC: Used to vary between non-italic and italic.
* A value of 0 can be interpreted as "Roman" (non-italic); a value of 1 can
* be interpreted as (fully) italic.
* @HB_STYLE_TAG_OPTICAL_SIZE: Used to vary design to suit different text sizes.
* Non-zero. Values can be interpreted as text size, in points.
* @HB_STYLE_TAG_SLANT: Used to vary between upright and slanted text. Values
* must be greater than -90 and less than +90. Values can be interpreted as
* the angle, in counter-clockwise degrees, of oblique slant from whatever the
* designer considers to be upright for that font design.
* @HB_STYLE_TAG_WIDTH: Used to vary width of text from narrower to wider.
* Non-zero. Values can be interpreted as a percentage of whatever the font
* designer considers “normal width” for that font design.
* @HB_STYLE_TAG_WEIGHT: Used to vary stroke thicknesses or other design details
* to give variation from lighter to blacker. Values can be interpreted in direct
* comparison to values for usWeightClass in the OS/2 table,
* or the CSS font-weight property.
*
* Defined by https://docs.microsoft.com/en-us/typography/opentype/spec/dvaraxisreg
*
* Since: REPLACEME
**/
typedef enum {
HB_STYLE_TAG_ITALIC = HB_TAG ('i','t','a','l'),
HB_STYLE_TAG_OPTICAL_SIZE = HB_TAG ('o','p','s','z'),
HB_STYLE_TAG_SLANT = HB_TAG ('s','l','n','t'),
HB_STYLE_TAG_WIDTH = HB_TAG ('w','d','t','h'),
HB_STYLE_TAG_WEIGHT = HB_TAG ('w','g','h','t'),
_HB_STYLE_TAG_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/
} hb_style_tag_t;
HB_EXTERN float
hb_style_get_value (hb_font_t *font, hb_style_tag_t style_tag);
HB_END_DECLS
#endif /* HB_STYLE_H */

2
src/hb-subset-plan.cc
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@ -301,7 +301,7 @@ static void
_nameid_closure (hb_face_t *face,
hb_set_t *nameids)
{
#ifndef HB_NO_STAT
#ifndef HB_NO_STYLE
face->table.STAT->collect_name_ids (nameids);
#endif
#ifndef HB_NO_VAR

1
src/hb.h
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@ -39,6 +39,7 @@
#include "hb-set.h"
#include "hb-shape.h"
#include "hb-shape-plan.h"
#include "hb-style.h"
#include "hb-unicode.h"
#include "hb-version.h"

1
test/api/Makefile.am
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@ -52,6 +52,7 @@ TEST_PROGS = \
test-ot-metrics-tt-var \
test-set \
test-shape \
test-style \
test-subset \
test-subset-cmap \
test-subset-drop-tables \

BIN
test/api/fonts/aat-fdsc.ttf Normal file
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Binary file not shown.

6
test/api/test-ot-face.c
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@ -131,6 +131,12 @@ test_font (hb_font_t *font, hb_codepoint_t cp)
hb_ot_name_get_utf16 (face, cp, NULL, NULL, NULL);
hb_ot_name_get_utf32 (face, cp, NULL, NULL, NULL);
hb_style_get_value (font, HB_STYLE_TAG_ITALIC);
hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE);
hb_style_get_value (font, HB_STYLE_TAG_SLANT);
hb_style_get_value (font, HB_STYLE_TAG_WIDTH);
hb_style_get_value (font, HB_STYLE_TAG_WEIGHT);
hb_ot_var_get_axis_count (face);
hb_ot_var_get_axis_infos (face, 0, NULL, NULL);
hb_ot_var_normalize_variations (face, NULL, 0, NULL, 0);

177
test/api/test-style.c Normal file
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@ -0,0 +1,177 @@
/*
* Copyright © 2019 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#include "hb-test.h"
#include <hb.h>
/* Unit tests for hb-style.h */
#define assert_cmpfloat(n1, n2) g_assert_cmpint ((int) (n1 * 100.f), ==, (int) (n2 * 100.f))
static void
test_empty_face (void)
{
hb_font_t *empty = hb_font_get_empty ();
assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_WEIGHT), 400);
}
static void
test_regular_face (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
hb_font_t *font = hb_font_create (face);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 400);
hb_font_destroy (font);
hb_face_destroy (face);
}
static void
test_face_fdsc (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/aat-fdsc.ttf");
hb_font_t *font = hb_font_create (face);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 24);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 6.33f);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 400);
hb_font_destroy (font);
hb_face_destroy (face);
}
static void
test_face_user_setting (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/AdobeVFPrototype_vsindex.otf");
hb_font_t *font = hb_font_create (face);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 389.34f); /* its default weight */
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 200);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 1);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 300);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 2);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 400);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 3);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT),600);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 4);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 700);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 5);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 900);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
hb_font_set_var_named_instance (font, 6);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 900);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 50);
hb_font_set_var_named_instance (font, 7);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 900);
assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 100);
hb_font_destroy (font);
hb_face_destroy (face);
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_empty_face);
hb_test_add (test_regular_face);
hb_test_add (test_face_fdsc);
hb_test_add (test_face_user_setting);
return hb_test_run ();
}