127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
|
|
* Copyright © 2018 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_AAT_FDSC_TABLE_HH
|
|
#define HB_AAT_FDSC_TABLE_HH
|
|
|
|
#include "hb-aat-layout-common.hh"
|
|
#include "hb-open-type.hh"
|
|
|
|
/*
|
|
* fdsc -- Font descriptors
|
|
* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6fdsc.html
|
|
*/
|
|
#define HB_AAT_TAG_fdsc HB_TAG('f','d','s','c')
|
|
|
|
|
|
namespace AAT {
|
|
|
|
|
|
struct FontDescriptor
|
|
{
|
|
bool has_data () const { return tag; }
|
|
|
|
int cmp (hb_tag_t a) const { return tag.cmp (a); }
|
|
|
|
float get_value () const { return u.value.to_float (); }
|
|
|
|
enum non_alphabetic_value_t {
|
|
Alphabetic = 0,
|
|
Dingbats = 1,
|
|
PiCharacters = 2,
|
|
Fleurons = 3,
|
|
DecorativeBorders = 4,
|
|
InternationalSymbols= 5,
|
|
MathSymbols = 6
|
|
};
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this));
|
|
}
|
|
|
|
protected:
|
|
Tag tag; /* The 4-byte table tag name. */
|
|
union {
|
|
Fixed value; /* The value for the descriptor tag. */
|
|
HBUINT32 nalfType; /* If the tag is `nalf`, see non_alphabetic_value_t */
|
|
} u;
|
|
public:
|
|
DEFINE_SIZE_STATIC (8);
|
|
};
|
|
|
|
struct fdsc
|
|
{
|
|
static constexpr hb_tag_t tableTag = HB_AAT_TAG_fdsc;
|
|
|
|
enum {
|
|
Weight = HB_TAG ('w','g','h','t'),
|
|
/* Percent weight relative to regular weight.
|
|
* (defaul value: 1.0) */
|
|
Width = HB_TAG ('w','d','t','h'),
|
|
/* Percent width relative to regular width.
|
|
* (default value: 1.0) */
|
|
Slant = HB_TAG ('s','l','n','t'),
|
|
/* Angle of slant in degrees, where positive
|
|
* is clockwise from straight up.
|
|
* (default value: 0.0) */
|
|
OpticalSize = HB_TAG ('o','p','s','z'),
|
|
/* Point size the font was designed for.
|
|
* (default value: 12.0) */
|
|
NonAlphabetic= HB_TAG ('n','a','l','f')
|
|
/* These values are treated as integers,
|
|
* not fixed32s. 0 means alphabetic, and greater
|
|
* integers mean the font is non-alphabetic (e.g. symbols).
|
|
* (default value: 0) */
|
|
};
|
|
|
|
const FontDescriptor &get_descriptor (hb_tag_t style) const
|
|
{ return descriptors.lsearch (style); }
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) &&
|
|
descriptors.sanitize (c));
|
|
}
|
|
|
|
protected:
|
|
Fixed version; /* Version number of the font descriptors
|
|
* table (0x00010000 for the current version). */
|
|
LArrayOf<FontDescriptor>
|
|
descriptors; /* List of tagged-coordinate pairs style descriptors
|
|
* that will be included to characterize this font.
|
|
* Each descriptor consists of a <tag, value> pair.
|
|
* These pairs are located in the gxFontDescriptor
|
|
* array that follows. */
|
|
public:
|
|
DEFINE_SIZE_ARRAY (8, descriptors);
|
|
};
|
|
|
|
} /* namespace AAT */
|
|
|
|
|
|
#endif /* HB_AAT_FDSC_TABLE_HH */
|