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src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-var-fvar-table.hh
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@@ -25,11 +25,11 @@
*/
#ifndef HB_OT_VAR_FVAR_TABLE_HH
#define HB_OT_VAR_FVAR_TABLE_HH
-#include "hb-open-type-private.hh"
+#include "hb-open-type.hh"
/*
* fvar -- Font Variations
* https://docs.microsoft.com/en-us/typography/opentype/spec/fvar
*/
@@ -40,156 +40,258 @@
namespace OT {
struct InstanceRecord
{
- inline bool sanitize (hb_sanitize_context_t *c, unsigned int axis_count) const
+ friend struct fvar;
+
+ hb_array_t<const Fixed> get_coordinates (unsigned int axis_count) const
+ { return coordinatesZ.as_array (axis_count); }
+
+ bool sanitize (hb_sanitize_context_t *c, unsigned int axis_count) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
- c->check_array (coordinates, coordinates[0].static_size, axis_count));
+ c->check_array (coordinatesZ.arrayZ, axis_count));
}
protected:
NameID subfamilyNameID;/* The name ID for entries in the 'name' table
* that provide subfamily names for this instance. */
- HBUINT16 reserved; /* Reserved for future use — set to 0. */
- Fixed coordinates[VAR];/* The coordinates array for this instance. */
+ HBUINT16 flags; /* Reserved for future use — set to 0. */
+ UnsizedArrayOf<Fixed>
+ coordinatesZ; /* The coordinates array for this instance. */
//NameID postScriptNameIDX;/*Optional. The name ID for entries in the 'name'
// * table that provide PostScript names for this
// * instance. */
public:
- DEFINE_SIZE_ARRAY (4, coordinates);
+ DEFINE_SIZE_UNBOUNDED (4);
};
struct AxisRecord
{
- inline bool sanitize (hb_sanitize_context_t *c) const
+ enum
+ {
+ AXIS_FLAG_HIDDEN = 0x0001,
+ };
+
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
public:
Tag axisTag; /* Tag identifying the design variation for the axis. */
Fixed minValue; /* The minimum coordinate value for the axis. */
Fixed defaultValue; /* The default coordinate value for the axis. */
Fixed maxValue; /* The maximum coordinate value for the axis. */
- HBUINT16 reserved; /* Reserved for future use — set to 0. */
+ HBUINT16 flags; /* Axis flags. */
NameID axisNameID; /* The name ID for entries in the 'name' table that
* provide a display name for this axis. */
public:
DEFINE_SIZE_STATIC (20);
};
struct fvar
{
- static const hb_tag_t tableTag = HB_OT_TAG_fvar;
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_fvar;
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool has_data () const { return version.to_int (); }
+
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (version.sanitize (c) &&
likely (version.major == 1) &&
c->check_struct (this) &&
+ axisSize == 20 && /* Assumed in our code. */
instanceSize >= axisCount * 4 + 4 &&
- axisSize <= 1024 && /* Arbitrary, just to simplify overflow checks. */
- instanceSize <= 1024 && /* Arbitrary, just to simplify overflow checks. */
- c->check_range (this, things) &&
- c->check_range (&StructAtOffset<char> (this, things),
- axisCount * axisSize + instanceCount * instanceSize));
+ get_axes ().sanitize (c) &&
+ c->check_range (get_instance (0), instanceCount, instanceSize));
}
- inline unsigned int get_axis_count (void) const
- { return axisCount; }
+ unsigned int get_axis_count () const { return axisCount; }
- inline bool get_axis (unsigned int index, hb_ot_var_axis_t *info) const
+ void get_axis_deprecated (unsigned int axis_index,
+ hb_ot_var_axis_t *info) const
{
- if (unlikely (index >= axisCount))
- return false;
+ const AxisRecord &axis = get_axes ()[axis_index];
+ info->tag = axis.axisTag;
+ info->name_id = axis.axisNameID;
+ info->default_value = axis.defaultValue / 65536.;
+ /* Ensure order, to simplify client math. */
+ info->min_value = MIN<float> (info->default_value, axis.minValue / 65536.);
+ info->max_value = MAX<float> (info->default_value, axis.maxValue / 65536.);
+ }
- if (info)
+ void get_axis_info (unsigned int axis_index,
+ hb_ot_var_axis_info_t *info) const
{
- const AxisRecord &axis = get_axes ()[index];
+ const AxisRecord &axis = get_axes ()[axis_index];
+ info->axis_index = axis_index;
info->tag = axis.axisTag;
info->name_id = axis.axisNameID;
+ info->flags = (hb_ot_var_axis_flags_t) (unsigned int) axis.flags;
info->default_value = axis.defaultValue / 65536.;
/* Ensure order, to simplify client math. */
info->min_value = MIN<float> (info->default_value, axis.minValue / 65536.);
info->max_value = MAX<float> (info->default_value, axis.maxValue / 65536.);
+ info->reserved = 0;
}
- return true;
+ unsigned int get_axes_deprecated (unsigned int start_offset,
+ unsigned int *axes_count /* IN/OUT */,
+ hb_ot_var_axis_t *axes_array /* OUT */) const
+ {
+ if (axes_count)
+ {
+ /* TODO Rewrite as hb_array_t<>::sub-array() */
+ unsigned int count = axisCount;
+ start_offset = MIN (start_offset, count);
+
+ count -= start_offset;
+ axes_array += start_offset;
+
+ count = MIN (count, *axes_count);
+ *axes_count = count;
+
+ for (unsigned int i = 0; i < count; i++)
+ get_axis_deprecated (start_offset + i, axes_array + i);
+ }
+ return axisCount;
}
- inline unsigned int get_axis_infos (unsigned int start_offset,
+ unsigned int get_axis_infos (unsigned int start_offset,
unsigned int *axes_count /* IN/OUT */,
- hb_ot_var_axis_t *axes_array /* OUT */) const
+ hb_ot_var_axis_info_t *axes_array /* OUT */) const
{
if (axes_count)
{
+ /* TODO Rewrite as hb_array_t<>::sub-array() */
unsigned int count = axisCount;
start_offset = MIN (start_offset, count);
count -= start_offset;
axes_array += start_offset;
count = MIN (count, *axes_count);
*axes_count = count;
for (unsigned int i = 0; i < count; i++)
- get_axis (start_offset + i, axes_array + i);
+ get_axis_info (start_offset + i, axes_array + i);
}
return axisCount;
}
- inline bool find_axis (hb_tag_t tag, unsigned int *index, hb_ot_var_axis_t *info) const
+ bool find_axis_deprecated (hb_tag_t tag,
+ unsigned int *axis_index,
+ hb_ot_var_axis_t *info) const
{
const AxisRecord *axes = get_axes ();
unsigned int count = get_axis_count ();
for (unsigned int i = 0; i < count; i++)
if (axes[i].axisTag == tag)
{
- if (index)
- *index = i;
- return get_axis (i, info);
+ if (axis_index)
+ *axis_index = i;
+ get_axis_deprecated (i, info);
+ return true;
}
- if (index)
- *index = HB_OT_VAR_NO_AXIS_INDEX;
+ if (axis_index)
+ *axis_index = HB_OT_VAR_NO_AXIS_INDEX;
return false;
}
- inline int normalize_axis_value (unsigned int axis_index, float v) const
+ bool find_axis_info (hb_tag_t tag,
+ hb_ot_var_axis_info_t *info) const
{
- hb_ot_var_axis_t axis;
- if (!get_axis (axis_index, &axis))
- return 0;
+ const AxisRecord *axes = get_axes ();
+ unsigned int count = get_axis_count ();
+ for (unsigned int i = 0; i < count; i++)
+ if (axes[i].axisTag == tag)
+ {
+ get_axis_info (i, info);
+ return true;
+ }
+ return false;
+ }
+
+ int normalize_axis_value (unsigned int axis_index, float v) const
+ {
+ hb_ot_var_axis_info_t axis;
+ get_axis_info (axis_index, &axis);
v = MAX (MIN (v, axis.max_value), axis.min_value); /* Clamp. */
if (v == axis.default_value)
return 0;
else if (v < axis.default_value)
v = (v - axis.default_value) / (axis.default_value - axis.min_value);
else
v = (v - axis.default_value) / (axis.max_value - axis.default_value);
- return (int) (v * 16384. + (v >= 0. ? .5 : -.5));
+ return (int) (v * 16384.f + (v >= 0.f ? .5f : -.5f));
+ }
+
+ unsigned int get_instance_count () const { return instanceCount; }
+
+ hb_ot_name_id_t get_instance_subfamily_name_id (unsigned int instance_index) const
+ {
+ const InstanceRecord *instance = get_instance (instance_index);
+ if (unlikely (!instance)) return HB_OT_NAME_ID_INVALID;
+ return instance->subfamilyNameID;
+ }
+
+ hb_ot_name_id_t get_instance_postscript_name_id (unsigned int instance_index) const
+ {
+ const InstanceRecord *instance = get_instance (instance_index);
+ if (unlikely (!instance)) return HB_OT_NAME_ID_INVALID;
+ if (instanceSize >= axisCount * 4 + 6)
+ return StructAfter<NameID> (instance->get_coordinates (axisCount));
+ return HB_OT_NAME_ID_INVALID;
+ }
+
+ unsigned int get_instance_coords (unsigned int instance_index,
+ unsigned int *coords_length, /* IN/OUT */
+ float *coords /* OUT */) const
+ {
+ const InstanceRecord *instance = get_instance (instance_index);
+ if (unlikely (!instance))
+ {
+ if (coords_length)
+ *coords_length = 0;
+ return 0;
+ }
+
+ if (coords_length && *coords_length)
+ {
+ hb_array_t<const Fixed> instanceCoords = instance->get_coordinates (axisCount)
+ .sub_array (0, *coords_length);
+ for (unsigned int i = 0; i < instanceCoords.length; i++)
+ coords[i] = instanceCoords.arrayZ[i].to_float ();
+ }
+ return axisCount;
}
protected:
- inline const AxisRecord * get_axes (void) const
- { return &StructAtOffset<AxisRecord> (this, things); }
+ hb_array_t<const AxisRecord> get_axes () const
+ { return hb_array (&(this+firstAxis), axisCount); }
- inline const InstanceRecord * get_instances (void) const
- { return &StructAtOffset<InstanceRecord> (get_axes () + axisCount, 0); }
+ const InstanceRecord *get_instance (unsigned int i) const
+ {
+ if (unlikely (i >= instanceCount)) return nullptr;
+ return &StructAtOffset<InstanceRecord> (&StructAfter<InstanceRecord> (get_axes ()),
+ i * instanceSize);
+ }
protected:
FixedVersion<>version; /* Version of the fvar table
* initially set to 0x00010000u */
- Offset16 things; /* Offset in bytes from the beginning of the table
+ OffsetTo<AxisRecord>
+ firstAxis; /* Offset in bytes from the beginning of the table
* to the start of the AxisRecord array. */
HBUINT16 reserved; /* This field is permanently reserved. Set to 2. */
HBUINT16 axisCount; /* The number of variation axes in the font (the
* number of records in the axes array). */
HBUINT16 axisSize; /* The size in bytes of each VariationAxisRecord —
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