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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkOTTable_head_DEFINED
#define SkOTTable_head_DEFINED
#include "SkEndian.h"
#include "SkOTTableTypes.h"
#pragma pack(push, 1)
struct SkOTTableHead {
static const SK_OT_CHAR TAG0 = 'h';
static const SK_OT_CHAR TAG1 = 'e';
static const SK_OT_CHAR TAG2 = 'a';
static const SK_OT_CHAR TAG3 = 'd';
static const SK_OT_ULONG TAG = SkOTTableTAG<SkOTTableHead>::value;
SK_OT_Fixed version;
static const SK_OT_Fixed version1 = SkTEndian_SwapBE32(0x00010000);
SK_OT_Fixed fontRevision;
static const uint32_t fontChecksum = 0xB1B0AFBA; //checksum of all TT fonts
SK_OT_ULONG checksumAdjustment;
SK_OT_ULONG magicNumber;
static const SK_OT_ULONG magicNumberConst = SkTEndian_SwapBE32(0x5F0F3CF5);
union Flags {
struct Field {
//8-15
SK_OT_BYTE_BITFIELD(
GXMetamorphosis_Apple,
HasStrongRTL_Apple,
HasIndicStyleRearrangement,
AgfaMicroTypeExpressProcessed,
FontConverted,
DesignedForClearType,
LastResort,
Reserved15)
//0-7
SK_OT_BYTE_BITFIELD(
BaselineAtY0,
LeftSidebearingAtX0,
InstructionsDependOnPointSize,
IntegerScaling,
InstructionsAlterAdvanceWidth,
VerticalCenteredGlyphs_Apple,
Reserved06,
RequiresLayout_Apple)
} field;
struct Raw {
static const SK_OT_USHORT BaselineAtY0Mask = SkTEndian_SwapBE16(1 << 0);
static const SK_OT_USHORT LeftSidebearingAtX0Mask = SkTEndian_SwapBE16(1 << 1);
static const SK_OT_USHORT InstructionsDependOnPointSizeMask = SkTEndian_SwapBE16(1 << 2);
static const SK_OT_USHORT IntegerScalingMask = SkTEndian_SwapBE16(1 << 3);
static const SK_OT_USHORT InstructionsAlterAdvanceWidthMask = SkTEndian_SwapBE16(1 << 4);
static const SK_OT_USHORT VerticalCenteredGlyphs_AppleMask = SkTEndian_SwapBE16(1 << 5);
//Reserved
static const SK_OT_USHORT RequiresLayout_AppleMask = SkTEndian_SwapBE16(1 << 7);
static const SK_OT_USHORT GXMetamorphosis_AppleMask = SkTEndian_SwapBE16(1 << 8);
static const SK_OT_USHORT HasStrongRTL_AppleMask = SkTEndian_SwapBE16(1 << 9);
static const SK_OT_USHORT HasIndicStyleRearrangementMask = SkTEndian_SwapBE16(1 << 10);
static const SK_OT_USHORT AgfaMicroTypeExpressProcessedMask = SkTEndian_SwapBE16(1 << 11);
static const SK_OT_USHORT FontConvertedMask = SkTEndian_SwapBE16(1 << 12);
static const SK_OT_USHORT DesignedForClearTypeMask = SkTEndian_SwapBE16(1 << 13);
static const SK_OT_USHORT LastResortMask = SkTEndian_SwapBE16(1 << 14);
//Reserved
SK_OT_USHORT value;
} raw;
} flags;
SK_OT_USHORT unitsPerEm;
SK_OT_LONGDATETIME created;
SK_OT_LONGDATETIME modified;
SK_OT_SHORT xMin;
SK_OT_SHORT yMin;
SK_OT_SHORT xMax;
SK_OT_SHORT yMax;
union MacStyle {
struct Field {
//8-15
SK_OT_BYTE_BITFIELD(
Reserved08,
Reserved09,
Reserved10,
Reserved11,
Reserved12,
Reserved13,
Reserved14,
Reserved15)
//0-7
SK_OT_BYTE_BITFIELD(
Bold,
Italic,
Underline,
Outline,
Shadow,
Condensed,
Extended,
Reserved07)
} field;
struct Raw {
static const SK_OT_USHORT BoldMask = SkTEndian_SwapBE16(1);
static const SK_OT_USHORT ItalicMask = SkTEndian_SwapBE16(1 << 1);
static const SK_OT_USHORT UnderlineMask = SkTEndian_SwapBE16(1 << 2);
static const SK_OT_USHORT OutlineMask = SkTEndian_SwapBE16(1 << 3);
static const SK_OT_USHORT ShadowMask = SkTEndian_SwapBE16(1 << 4);
static const SK_OT_USHORT CondensedMask = SkTEndian_SwapBE16(1 << 5);
static const SK_OT_USHORT ExtendedMask = SkTEndian_SwapBE16(1 << 6);
SK_OT_USHORT value;
} raw;
} macStyle;
SK_OT_USHORT lowestRecPPEM;
struct FontDirectionHint {
enum Value : SK_OT_SHORT {
FullyMixedDirectionalGlyphs = SkTEndian_SwapBE16(0),
OnlyStronglyLTR = SkTEndian_SwapBE16(1),
StronglyLTR = SkTEndian_SwapBE16(2),
OnlyStronglyRTL = static_cast<SK_OT_SHORT>(SkTEndian_SwapBE16((uint16_t)-1)),
StronglyRTL = static_cast<SK_OT_SHORT>(SkTEndian_SwapBE16((uint16_t)-2)),
} value;
} fontDirectionHint;
struct IndexToLocFormat {
enum Value : SK_OT_SHORT {
ShortOffsets = SkTEndian_SwapBE16(0),
LongOffsets = SkTEndian_SwapBE16(1),
} value;
} indexToLocFormat;
struct GlyphDataFormat {
enum Value : SK_OT_SHORT {
CurrentFormat = SkTEndian_SwapBE16(0),
} value;
} glyphDataFormat;
};
#pragma pack(pop)
#include <stddef.h>
static_assert(offsetof(SkOTTableHead, glyphDataFormat) == 52, "SkOTTableHead_glyphDataFormat_not_at_52");
static_assert(sizeof(SkOTTableHead) == 54, "sizeof_SkOTTableHead_not_54");
#endif
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