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gfx/skia/trunk/src/sfnt/SkOTTable_glyf.h@129ffea94266 (annotated)

gfx/skia/trunk/src/sfnt/SkOTTable_glyf.h

Sat, 03 Jan 2015 20:18:00 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Sat, 03 Jan 2015 20:18:00 +0100

branch

TOR_BUG_3246

changeset 7

129ffea94266

permissions

-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0	1	/*
michael@0	2	* Copyright 2012 Google Inc.
michael@0	3	*
michael@0	4	* Use of this source code is governed by a BSD-style license that can be
michael@0	5	* found in the LICENSE file.
michael@0	6	*/
michael@0	7
michael@0	8	#ifndef SkOTTable_glyf_DEFINED
michael@0	9	#define SkOTTable_glyf_DEFINED
michael@0	10
michael@0	11	#include "SkEndian.h"
michael@0	12	#include "SkOTTableTypes.h"
michael@0	13	#include "SkOTTable_head.h"
michael@0	14	#include "SkOTTable_loca.h"
michael@0	15	#include "SkTypedEnum.h"
michael@0	16
michael@0	17	#pragma pack(push, 1)
michael@0	18
michael@0	19	struct SkOTTableGlyphData;
michael@0	20
michael@0	21	extern uint8_t const * const SK_OT_GlyphData_NoOutline;
michael@0	22
michael@0	23	struct SkOTTableGlyph {
michael@0	24	static const SK_OT_CHAR TAG0 = 'g';
michael@0	25	static const SK_OT_CHAR TAG1 = 'l';
michael@0	26	static const SK_OT_CHAR TAG2 = 'y';
michael@0	27	static const SK_OT_CHAR TAG3 = 'f';
michael@0	28	static const SK_OT_ULONG TAG = SkOTTableTAG<SkOTTableGlyph>::value;
michael@0	29
michael@0	30	class Iterator {
michael@0	31	public:
michael@0	32	Iterator(const SkOTTableGlyph& glyf,
michael@0	33	const SkOTTableIndexToLocation& loca,
michael@0	34	SkOTTableHead::IndexToLocFormat locaFormat)
michael@0	35	: fGlyf(glyf)
michael@0	36	, fLocaFormat(SkOTTableHead::IndexToLocFormat::ShortOffsets == locaFormat.value ? 0 : 1)
michael@0	37	, fCurrentGlyphOffset(0)
michael@0	38	{ fLocaPtr.shortOffset = reinterpret_cast<const SK_OT_USHORT*>(&loca); }
michael@0	39
michael@0	40	void advance(uint16_t num) {
michael@0	41	fLocaPtr.shortOffset += num << fLocaFormat;
michael@0	42	fCurrentGlyphOffset = fLocaFormat ? SkEndian_SwapBE32(*fLocaPtr.longOffset)
michael@0	43	: uint32_t(SkEndian_SwapBE16(*fLocaPtr.shortOffset) << 1);
michael@0	44	}
michael@0	45	const SkOTTableGlyphData* next() {
michael@0	46	uint32_t previousGlyphOffset = fCurrentGlyphOffset;
michael@0	47	advance(1);
michael@0	48	if (previousGlyphOffset == fCurrentGlyphOffset) {
michael@0	49	return reinterpret_cast<const SkOTTableGlyphData*>(&SK_OT_GlyphData_NoOutline);
michael@0	50	} else {
michael@0	51	return reinterpret_cast<const SkOTTableGlyphData*>(
michael@0	52	reinterpret_cast<const SK_OT_BYTE*>(&fGlyf) + previousGlyphOffset
michael@0	53	);
michael@0	54	}
michael@0	55	}
michael@0	56	private:
michael@0	57	const SkOTTableGlyph& fGlyf;
michael@0	58	uint16_t fLocaFormat; //0 or 1
michael@0	59	uint32_t fCurrentGlyphOffset;
michael@0	60	union LocaPtr {
michael@0	61	const SK_OT_USHORT* shortOffset;
michael@0	62	const SK_OT_ULONG* longOffset;
michael@0	63	} fLocaPtr;
michael@0	64	};
michael@0	65	};
michael@0	66
michael@0	67	struct SkOTTableGlyphData {
michael@0	68	SK_OT_SHORT numberOfContours; //== -1 Composite, > 0 Simple
michael@0	69	SK_OT_FWORD xMin;
michael@0	70	SK_OT_FWORD yMin;
michael@0	71	SK_OT_FWORD xMax;
michael@0	72	SK_OT_FWORD yMax;
michael@0	73
michael@0	74	struct Simple {
michael@0	75	SK_OT_USHORT endPtsOfContours[1/*numberOfContours*/];
michael@0	76
michael@0	77	struct Instructions {
michael@0	78	SK_OT_USHORT length;
michael@0	79	SK_OT_BYTE data[1/*length*/];
michael@0	80	};
michael@0	81
michael@0	82	union Flags {
michael@0	83	struct Field {
michael@0	84	SK_OT_BYTE_BITFIELD(
michael@0	85	OnCurve,
michael@0	86	xShortVector,
michael@0	87	yShortVector,
michael@0	88	Repeat,
michael@0	89	xIsSame_xShortVectorPositive,
michael@0	90	yIsSame_yShortVectorPositive,
michael@0	91	Reserved6,
michael@0	92	Reserved7)
michael@0	93	} field;
michael@0	94	struct Raw {
michael@0	95	static const SK_OT_USHORT OnCurveMask = SkTEndian_SwapBE16(1 << 0);
michael@0	96	static const SK_OT_USHORT xShortVectorMask = SkTEndian_SwapBE16(1 << 1);
michael@0	97	static const SK_OT_USHORT yShortVectorMask = SkTEndian_SwapBE16(1 << 2);
michael@0	98	static const SK_OT_USHORT RepeatMask = SkTEndian_SwapBE16(1 << 3);
michael@0	99	static const SK_OT_USHORT xIsSame_xShortVectorPositiveMask = SkTEndian_SwapBE16(1 << 4);
michael@0	100	static const SK_OT_USHORT yIsSame_yShortVectorPositiveMask = SkTEndian_SwapBE16(1 << 5);
michael@0	101	SK_OT_BYTE value;
michael@0	102	} raw;
michael@0	103	};
michael@0	104
michael@0	105	//xCoordinates
michael@0	106	//yCoordinates
michael@0	107	};
michael@0	108
michael@0	109	struct Composite {
michael@0	110	struct Component {
michael@0	111	union Flags {
michael@0	112	struct Field {
michael@0	113	//8-15
michael@0	114	SK_OT_BYTE_BITFIELD(
michael@0	115	WE_HAVE_INSTRUCTIONS,
michael@0	116	USE_MY_METRICS,
michael@0	117	OVERLAP_COMPOUND,
michael@0	118	SCALED_COMPONENT_OFFSET,
michael@0	119	UNSCALED_COMPONENT_OFFSET,
michael@0	120	Reserved13,
michael@0	121	Reserved14,
michael@0	122	Reserved15)
michael@0	123	//0-7
michael@0	124	SK_OT_BYTE_BITFIELD(
michael@0	125	ARG_1_AND_2_ARE_WORDS,
michael@0	126	ARGS_ARE_XY_VALUES,
michael@0	127	ROUND_XY_TO_GRID,
michael@0	128	WE_HAVE_A_SCALE,
michael@0	129	RESERVED,
michael@0	130	MORE_COMPONENTS,
michael@0	131	WE_HAVE_AN_X_AND_Y_SCALE,
michael@0	132	WE_HAVE_A_TWO_BY_TWO)
michael@0	133	} field;
michael@0	134	struct Raw {
michael@0	135	static const SK_OT_USHORT ARG_1_AND_2_ARE_WORDS_Mask = SkTEndian_SwapBE16(1 << 0);
michael@0	136	static const SK_OT_USHORT ARGS_ARE_XY_VALUES_Mask = SkTEndian_SwapBE16(1 << 1);
michael@0	137	static const SK_OT_USHORT ROUND_XY_TO_GRID_Mask = SkTEndian_SwapBE16(1 << 2);
michael@0	138	static const SK_OT_USHORT WE_HAVE_A_SCALE_Mask = SkTEndian_SwapBE16(1 << 3);
michael@0	139	static const SK_OT_USHORT RESERVED_Mask = SkTEndian_SwapBE16(1 << 4);
michael@0	140	static const SK_OT_USHORT MORE_COMPONENTS_Mask = SkTEndian_SwapBE16(1 << 5);
michael@0	141	static const SK_OT_USHORT WE_HAVE_AN_X_AND_Y_SCALE_Mask = SkTEndian_SwapBE16(1 << 6);
michael@0	142	static const SK_OT_USHORT WE_HAVE_A_TWO_BY_TWO_Mask = SkTEndian_SwapBE16(1 << 7);
michael@0	143
michael@0	144	static const SK_OT_USHORT WE_HAVE_INSTRUCTIONS_Mask = SkTEndian_SwapBE16(1 << 8);
michael@0	145	static const SK_OT_USHORT USE_MY_METRICS_Mask = SkTEndian_SwapBE16(1 << 9);
michael@0	146	static const SK_OT_USHORT OVERLAP_COMPOUND_Mask = SkTEndian_SwapBE16(1 << 10);
michael@0	147	static const SK_OT_USHORT SCALED_COMPONENT_OFFSET_Mask = SkTEndian_SwapBE16(1 << 11);
michael@0	148	static const SK_OT_USHORT UNSCALED_COMPONENT_OFFSET_mask = SkTEndian_SwapBE16(1 << 12);
michael@0	149	//Reserved
michael@0	150	//Reserved
michael@0	151	//Reserved
michael@0	152	SK_OT_USHORT value;
michael@0	153	} raw;
michael@0	154	} flags;
michael@0	155	SK_OT_USHORT glyphIndex;
michael@0	156	union Transform {
michael@0	157	union Matrix {
michael@0	158	/** !WE_HAVE_A_SCALE & !WE_HAVE_AN_X_AND_Y_SCALE & !WE_HAVE_A_TWO_BY_TWO */
michael@0	159	struct None { } none;
michael@0	160	/** WE_HAVE_A_SCALE */
michael@0	161	struct Scale {
michael@0	162	SK_OT_F2DOT14 a_d;
michael@0	163	} scale;
michael@0	164	/** WE_HAVE_AN_X_AND_Y_SCALE */
michael@0	165	struct ScaleXY {
michael@0	166	SK_OT_F2DOT14 a;
michael@0	167	SK_OT_F2DOT14 d;
michael@0	168	} scaleXY;
michael@0	169	/** WE_HAVE_A_TWO_BY_TWO */
michael@0	170	struct TwoByTwo {
michael@0	171	SK_OT_F2DOT14 a;
michael@0	172	SK_OT_F2DOT14 b;
michael@0	173	SK_OT_F2DOT14 c;
michael@0	174	SK_OT_F2DOT14 d;
michael@0	175	} twoByTwo;
michael@0	176	};
michael@0	177	/** ARG_1_AND_2_ARE_WORDS & ARGS_ARE_XY_VALUES */
michael@0	178	struct WordValue {
michael@0	179	SK_OT_FWORD e;
michael@0	180	SK_OT_FWORD f;
michael@0	181	SkOTTableGlyphData::Composite::Component::Transform::Matrix matrix;
michael@0	182	} wordValue;
michael@0	183	/** !ARG_1_AND_2_ARE_WORDS & ARGS_ARE_XY_VALUES */
michael@0	184	struct ByteValue {
michael@0	185	SK_OT_CHAR e;
michael@0	186	SK_OT_CHAR f;
michael@0	187	SkOTTableGlyphData::Composite::Component::Transform::Matrix matrix;
michael@0	188	} byteValue;
michael@0	189	/** ARG_1_AND_2_ARE_WORDS & !ARGS_ARE_XY_VALUES */
michael@0	190	struct WordIndex {
michael@0	191	SK_OT_USHORT compoundPointIndex;
michael@0	192	SK_OT_USHORT componentPointIndex;
michael@0	193	SkOTTableGlyphData::Composite::Component::Transform::Matrix matrix;
michael@0	194	} wordIndex;
michael@0	195	/** !ARG_1_AND_2_ARE_WORDS & !ARGS_ARE_XY_VALUES */
michael@0	196	struct ByteIndex {
michael@0	197	SK_OT_BYTE compoundPointIndex;
michael@0	198	SK_OT_BYTE componentPointIndex;
michael@0	199	SkOTTableGlyphData::Composite::Component::Transform::Matrix matrix;
michael@0	200	} byteIndex;
michael@0	201	} transform;
michael@0	202	} component;//[] last element does not set MORE_COMPONENTS
michael@0	203
michael@0	204	/** Comes after the last Component if the last component has WE_HAVE_INSTR. */
michael@0	205	struct Instructions {
michael@0	206	SK_OT_USHORT length;
michael@0	207	SK_OT_BYTE data[1/*length*/];
michael@0	208	};
michael@0	209	};
michael@0	210	};
michael@0	211
michael@0	212	#pragma pack(pop)
michael@0	213
michael@0	214	#endif