gfx/skia/trunk/src/pdf/SkPDFGraphicState.h@129ffea94266
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.
2 /*
3 * Copyright 2010 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
10 #ifndef SkPDFGraphicState_DEFINED
11 #define SkPDFGraphicState_DEFINED
13 #include "SkPaint.h"
14 #include "SkPDFTypes.h"
15 #include "SkTemplates.h"
16 #include "SkThread.h"
18 class SkPDFFormXObject;
20 /** \class SkPDFGraphicState
21 SkPaint objects roughly correspond to graphic state dictionaries that can
22 be installed. So that a given dictionary is only output to the pdf file
23 once, we want to canonicalize them. Static methods in this class manage
24 a weakly referenced set of SkPDFGraphicState objects: when the last
25 reference to a SkPDFGraphicState is removed, it removes itself from the
26 static set of objects.
28 */
29 class SkPDFGraphicState : public SkPDFDict {
30 SK_DECLARE_INST_COUNT(SkPDFGraphicState)
31 public:
32 enum SkPDFSMaskMode {
33 kAlpha_SMaskMode,
34 kLuminosity_SMaskMode
35 };
37 virtual ~SkPDFGraphicState();
39 virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
40 SkTSet<SkPDFObject*>* newResourceObjects);
42 // Override emitObject and getOutputSize so that we can populate
43 // the dictionary on demand.
44 virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog,
45 bool indirect);
46 virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect);
48 /** Get the graphic state for the passed SkPaint. The reference count of
49 * the object is incremented and it is the caller's responsibility to
50 * unreference it when done. This is needed to accommodate the weak
51 * reference pattern used when the returned object is new and has no
52 * other references.
53 * @param paint The SkPaint to emulate.
54 */
55 static SkPDFGraphicState* GetGraphicStateForPaint(const SkPaint& paint);
57 /** Make a graphic state that only sets the passed soft mask. The
58 * reference count of the object is incremented and it is the caller's
59 * responsibility to unreference it when done.
60 * @param sMask The form xobject to use as a soft mask.
61 * @param invert Indicates if the alpha of the sMask should be inverted.
62 * @param sMaskMode Whether to use alpha or luminosity for the sMask.
63 */
64 static SkPDFGraphicState* GetSMaskGraphicState(SkPDFFormXObject* sMask,
65 bool invert,
66 SkPDFSMaskMode sMaskMode);
68 /** Get a graphic state that only unsets the soft mask. The reference
69 * count of the object is incremented and it is the caller's responsibility
70 * to unreference it when done. This is needed to accommodate the weak
71 * reference pattern used when the returned object is new and has no
72 * other references.
73 */
74 static SkPDFGraphicState* GetNoSMaskGraphicState();
76 private:
77 const SkPaint fPaint;
78 SkTDArray<SkPDFObject*> fResources;
79 bool fPopulated;
80 bool fSMask;
82 class GSCanonicalEntry {
83 public:
84 SkPDFGraphicState* fGraphicState;
85 const SkPaint* fPaint;
87 bool operator==(const GSCanonicalEntry& b) const;
88 explicit GSCanonicalEntry(SkPDFGraphicState* gs)
89 : fGraphicState(gs),
90 fPaint(&gs->fPaint) {}
91 explicit GSCanonicalEntry(const SkPaint* paint)
92 : fGraphicState(NULL),
93 fPaint(paint) {}
94 };
96 // This should be made a hash table if performance is a problem.
97 static SkTDArray<GSCanonicalEntry>& CanonicalPaints();
98 static SkBaseMutex& CanonicalPaintsMutex();
100 SkPDFGraphicState();
101 explicit SkPDFGraphicState(const SkPaint& paint);
103 void populateDict();
105 static SkPDFObject* GetInvertFunction();
107 static int Find(const SkPaint& paint);
108 typedef SkPDFDict INHERITED;
109 };
111 #endif
