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gfx/skia/trunk/src/pdf/SkPDFGraphicState.h@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFGraphicState.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	/*
michael@0	3	* Copyright 2010 The Android Open Source Project
michael@0	4	*
michael@0	5	* Use of this source code is governed by a BSD-style license that can be
michael@0	6	* found in the LICENSE file.
michael@0	7	*/
michael@0	8
michael@0	9
michael@0	10	#ifndef SkPDFGraphicState_DEFINED
michael@0	11	#define SkPDFGraphicState_DEFINED
michael@0	12
michael@0	13	#include "SkPaint.h"
michael@0	14	#include "SkPDFTypes.h"
michael@0	15	#include "SkTemplates.h"
michael@0	16	#include "SkThread.h"
michael@0	17
michael@0	18	class SkPDFFormXObject;
michael@0	19
michael@0	20	/** \class SkPDFGraphicState
michael@0	21	SkPaint objects roughly correspond to graphic state dictionaries that can
michael@0	22	be installed. So that a given dictionary is only output to the pdf file
michael@0	23	once, we want to canonicalize them. Static methods in this class manage
michael@0	24	a weakly referenced set of SkPDFGraphicState objects: when the last
michael@0	25	reference to a SkPDFGraphicState is removed, it removes itself from the
michael@0	26	static set of objects.
michael@0	27
michael@0	28	*/
michael@0	29	class SkPDFGraphicState : public SkPDFDict {
michael@0	30	SK_DECLARE_INST_COUNT(SkPDFGraphicState)
michael@0	31	public:
michael@0	32	enum SkPDFSMaskMode {
michael@0	33	kAlpha_SMaskMode,
michael@0	34	kLuminosity_SMaskMode
michael@0	35	};
michael@0	36
michael@0	37	virtual ~SkPDFGraphicState();
michael@0	38
michael@0	39	virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
michael@0	40	SkTSet<SkPDFObject*>* newResourceObjects);
michael@0	41
michael@0	42	// Override emitObject and getOutputSize so that we can populate
michael@0	43	// the dictionary on demand.
michael@0	44	virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog,
michael@0	45	bool indirect);
michael@0	46	virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect);
michael@0	47
michael@0	48	/** Get the graphic state for the passed SkPaint. The reference count of
michael@0	49	* the object is incremented and it is the caller's responsibility to
michael@0	50	* unreference it when done. This is needed to accommodate the weak
michael@0	51	* reference pattern used when the returned object is new and has no
michael@0	52	* other references.
michael@0	53	* @param paint The SkPaint to emulate.
michael@0	54	*/
michael@0	55	static SkPDFGraphicState* GetGraphicStateForPaint(const SkPaint& paint);
michael@0	56
michael@0	57	/** Make a graphic state that only sets the passed soft mask. The
michael@0	58	* reference count of the object is incremented and it is the caller's
michael@0	59	* responsibility to unreference it when done.
michael@0	60	* @param sMask The form xobject to use as a soft mask.
michael@0	61	* @param invert Indicates if the alpha of the sMask should be inverted.
michael@0	62	* @param sMaskMode Whether to use alpha or luminosity for the sMask.
michael@0	63	*/
michael@0	64	static SkPDFGraphicState* GetSMaskGraphicState(SkPDFFormXObject* sMask,
michael@0	65	bool invert,
michael@0	66	SkPDFSMaskMode sMaskMode);
michael@0	67
michael@0	68	/** Get a graphic state that only unsets the soft mask. The reference
michael@0	69	* count of the object is incremented and it is the caller's responsibility
michael@0	70	* to unreference it when done. This is needed to accommodate the weak
michael@0	71	* reference pattern used when the returned object is new and has no
michael@0	72	* other references.
michael@0	73	*/
michael@0	74	static SkPDFGraphicState* GetNoSMaskGraphicState();
michael@0	75
michael@0	76	private:
michael@0	77	const SkPaint fPaint;
michael@0	78	SkTDArray<SkPDFObject*> fResources;
michael@0	79	bool fPopulated;
michael@0	80	bool fSMask;
michael@0	81
michael@0	82	class GSCanonicalEntry {
michael@0	83	public:
michael@0	84	SkPDFGraphicState* fGraphicState;
michael@0	85	const SkPaint* fPaint;
michael@0	86
michael@0	87	bool operator==(const GSCanonicalEntry& b) const;
michael@0	88	explicit GSCanonicalEntry(SkPDFGraphicState* gs)
michael@0	89	: fGraphicState(gs),
michael@0	90	fPaint(&gs->fPaint) {}
michael@0	91	explicit GSCanonicalEntry(const SkPaint* paint)
michael@0	92	: fGraphicState(NULL),
michael@0	93	fPaint(paint) {}
michael@0	94	};
michael@0	95
michael@0	96	// This should be made a hash table if performance is a problem.
michael@0	97	static SkTDArray<GSCanonicalEntry>& CanonicalPaints();
michael@0	98	static SkBaseMutex& CanonicalPaintsMutex();
michael@0	99
michael@0	100	SkPDFGraphicState();
michael@0	101	explicit SkPDFGraphicState(const SkPaint& paint);
michael@0	102
michael@0	103	void populateDict();
michael@0	104
michael@0	105	static SkPDFObject* GetInvertFunction();
michael@0	106
michael@0	107	static int Find(const SkPaint& paint);
michael@0	108	typedef SkPDFDict INHERITED;
michael@0	109	};
michael@0	110
michael@0	111	#endif