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