Add 'head' table
This commit is contained in:
Behdad Esfahbod
parent
e29caf3f94
commit
cf5585cfa6
|
|
@ -20,6 +20,7 @@ HBSOURCES = \
|
|||
hb-open-file-private.hh \
|
||||
hb-open-type-private.hh \
|
||||
hb-language.c \
|
||||
hb-ot-head-private.hh \
|
||||
hb-private.h \
|
||||
hb-shape.cc \
|
||||
hb-unicode.c \
|
||||
|
|
|
|||
|
|
@ -31,6 +31,8 @@
|
|||
|
||||
#include "hb-font.h"
|
||||
|
||||
#include "hb-ot-head-private.hh"
|
||||
|
||||
#include "hb-ot-layout-private.hh"
|
||||
|
||||
HB_BEGIN_DECLS
|
||||
|
|
@ -64,6 +66,9 @@ struct _hb_face_t {
|
|||
hb_destroy_func_t destroy;
|
||||
void *user_data;
|
||||
|
||||
hb_blob_t *head_blob;
|
||||
const struct head *head_table;
|
||||
|
||||
hb_ot_layout_t ot_layout;
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -231,6 +231,9 @@ static hb_face_t _hb_face_nil = {
|
|||
NULL, /* destroy */
|
||||
NULL, /* user_data */
|
||||
|
||||
NULL, /* head_blob */
|
||||
NULL, /* head_table */
|
||||
|
||||
{} /* ot_layout */
|
||||
};
|
||||
|
||||
|
|
@ -324,6 +327,9 @@ hb_face_create_for_data (hb_blob_t *blob,
|
|||
face->user_data = _hb_face_for_data_closure_create (Sanitizer<OpenTypeFontFile>::sanitize (blob), index);
|
||||
hb_blob_destroy (blob);
|
||||
|
||||
face->head_blob = Sanitizer<head>::sanitize (hb_face_get_table (face, HB_OT_TAG_head));
|
||||
face->head_table = Sanitizer<head>::lock_instance (face->head_blob);
|
||||
|
||||
_hb_ot_layout_init (face);
|
||||
|
||||
return face;
|
||||
|
|
@ -349,6 +355,9 @@ hb_face_destroy (hb_face_t *face)
|
|||
|
||||
_hb_ot_layout_fini (face);
|
||||
|
||||
hb_blob_unlock (face->head_blob);
|
||||
hb_blob_destroy (face->head_blob);
|
||||
|
||||
if (face->destroy)
|
||||
face->destroy (face->user_data);
|
||||
|
||||
|
|
|
|||
|
|
@ -120,7 +120,7 @@ inline Type& StructAfter(TObject &X)
|
|||
*/
|
||||
|
||||
/* Global nul-content Null pool. Enlarge as necessary. */
|
||||
static const void *_NullPool[16 / sizeof (void *)];
|
||||
static const void *_NullPool[64 / sizeof (void *)];
|
||||
|
||||
/* Generic nul-content Null objects. */
|
||||
template <typename Type>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,128 @@
|
|||
/*
|
||||
* Copyright (C) 2010 Red Hat, Inc.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* Red Hat Author(s): Behdad Esfahbod
|
||||
*/
|
||||
|
||||
#ifndef HB_OT_HEAD_PRIVATE_HH
|
||||
#define HB_OT_HEAD_PRIVATE_HH
|
||||
|
||||
#include "hb-open-type-private.hh"
|
||||
|
||||
/*
|
||||
* head
|
||||
*/
|
||||
|
||||
#define HB_OT_TAG_head HB_TAG('h','e','a','d')
|
||||
|
||||
struct head
|
||||
{
|
||||
static const hb_tag_t Tag = HB_OT_TAG_head;
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) {
|
||||
TRACE_SANITIZE ();
|
||||
/* Shall we check for magicNumber here? Who cares? */
|
||||
return c->check_struct (this) && likely (version.major == 1);
|
||||
}
|
||||
|
||||
FixedVersion version; /* Version of the head table--currently
|
||||
* 0x00010000 for version 1.0. */
|
||||
FixedVersion fontRevision; /* Set by font manufacturer. */
|
||||
ULONG checkSumAdjustment; /* To compute: set it to 0, sum the
|
||||
* entire font as ULONG, then store
|
||||
* 0xB1B0AFBA - sum. */
|
||||
ULONG magicNumber; /* Set to 0x5F0F3CF5. */
|
||||
USHORT flags; /* Bit 0: Baseline for font at y=0;
|
||||
* Bit 1: Left sidebearing point at x=0;
|
||||
* Bit 2: Instructions may depend on point size;
|
||||
* Bit 3: Force ppem to integer values for all
|
||||
* internal scaler math; may use fractional
|
||||
* ppem sizes if this bit is clear;
|
||||
* Bit 4: Instructions may alter advance width
|
||||
* (the advance widths might not scale linearly);
|
||||
|
||||
* Bits 5-10: These should be set according to
|
||||
* Apple's specification. However, they are not
|
||||
* implemented in OpenType.
|
||||
* Bit 5: This bit should be set in fonts that are
|
||||
* intended to e laid out vertically, and in
|
||||
* which the glyphs have been drawn such that an
|
||||
* x-coordinate of 0 corresponds to the desired
|
||||
* vertical baseline.
|
||||
* Bit 6: This bit must be set to zero.
|
||||
* Bit 7: This bit should be set if the font
|
||||
* requires layout for correct linguistic
|
||||
* rendering (e.g. Arabic fonts).
|
||||
* Bit 8: This bit should be set for a GX font
|
||||
* which has one or more metamorphosis effects
|
||||
* designated as happening by default.
|
||||
* Bit 9: This bit should be set if the font
|
||||
* contains any strong right-to-left glyphs.
|
||||
* Bit 10: This bit should be set if the font
|
||||
* contains Indic-style rearrangement effects.
|
||||
|
||||
* Bit 11: Font data is 'lossless,' as a result
|
||||
* of having been compressed and decompressed
|
||||
* with the Agfa MicroType Express engine.
|
||||
* Bit 12: Font converted (produce compatible metrics)
|
||||
* Bit 13: Font optimized for ClearType™.
|
||||
* Note, fonts that rely on embedded bitmaps (EBDT)
|
||||
* for rendering should not be considered optimized
|
||||
* for ClearType, and therefore should keep this bit
|
||||
* cleared.
|
||||
* Bit 14: Reserved, set to 0
|
||||
* Bit 15: Reserved, set to 0. */
|
||||
USHORT unitsPerEm; /* Valid range is from 16 to 16384. This value
|
||||
* should be a power of 2 for fonts that have
|
||||
* TrueType outlines. */
|
||||
LONGDATETIME created; /* Number of seconds since 12:00 midnight,
|
||||
January 1, 1904. 64-bit integer */
|
||||
LONGDATETIME modified; /* Number of seconds since 12:00 midnight,
|
||||
January 1, 1904. 64-bit integer */
|
||||
SHORT xMin; /* For all glyph bounding boxes. */
|
||||
SHORT yMin; /* For all glyph bounding boxes. */
|
||||
SHORT xMax; /* For all glyph bounding boxes. */
|
||||
SHORT yMax; /* For all glyph bounding boxes. */
|
||||
USHORT macStyle; /* Bit 0: Bold (if set to 1);
|
||||
* Bit 1: Italic (if set to 1)
|
||||
* Bit 2: Underline (if set to 1)
|
||||
* Bit 3: Outline (if set to 1)
|
||||
* Bit 4: Shadow (if set to 1)
|
||||
* Bit 5: Condensed (if set to 1)
|
||||
* Bit 6: Extended (if set to 1)
|
||||
* Bits 7-15: Reserved (set to 0). */
|
||||
USHORT lowestRecPPEM; /* Smallest readable size in pixels. */
|
||||
SHORT fontDirectionHint; /* Deprecated (Set to 2).
|
||||
* 0: Fully mixed directional glyphs;
|
||||
* 1: Only strongly left to right;
|
||||
* 2: Like 1 but also contains neutrals;
|
||||
* -1: Only strongly right to left;
|
||||
* -2: Like -1 but also contains neutrals. */
|
||||
SHORT indexToLocFormat; /* 0 for short offsets, 1 for long. */
|
||||
SHORT glyphDataFormat; /* 0 for current format. */
|
||||
public:
|
||||
DEFINE_SIZE_STATIC (54);
|
||||
};
|
||||
|
||||
|
||||
#endif /* HB_OT_HEAD_PRIVATE_HH */
|
||||
Loading…
Reference in New Issue