gfx/skia/trunk/src/lazy/SkCachingPixelRef.h@129ffea94266 (annotated)
gfx/skia/trunk/src/lazy/SkCachingPixelRef.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 2013 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 SkCachingPixelRef_DEFINED |
| michael@0 | 9 | #define SkCachingPixelRef_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "SkImageInfo.h" |
| michael@0 | 12 | #include "SkImageGenerator.h" |
| michael@0 | 13 | #include "SkPixelRef.h" |
| michael@0 | 14 | |
| michael@0 | 15 | class SkColorTable; |
| michael@0 | 16 | |
| michael@0 | 17 | /** |
| michael@0 | 18 | * PixelRef which defers decoding until SkBitmap::lockPixels() is |
| michael@0 | 19 | * called. Caches the decoded images in the global |
| michael@0 | 20 | * SkScaledImageCache. When the pixels are unlocked, this cache may |
| michael@0 | 21 | * or be destroyed before the next lock. If so, onLockPixels will |
| michael@0 | 22 | * attempt to re-decode. |
| michael@0 | 23 | * |
| michael@0 | 24 | * Decoding is handled by the SkImageGenerator |
| michael@0 | 25 | */ |
| michael@0 | 26 | class SkCachingPixelRef : public SkPixelRef { |
| michael@0 | 27 | public: |
| michael@0 | 28 | SK_DECLARE_INST_COUNT(SkCachingPixelRef) |
| michael@0 | 29 | /** |
| michael@0 | 30 | * Takes ownership of SkImageGenerator. If this method fails for |
| michael@0 | 31 | * whatever reason, it will return false and immediatetely delete |
| michael@0 | 32 | * the generator. If it succeeds, it will modify destination |
| michael@0 | 33 | * bitmap. |
| michael@0 | 34 | * |
| michael@0 | 35 | * If Install fails or when the SkCachingPixelRef that is |
| michael@0 | 36 | * installed into destination is destroyed, it will call |
| michael@0 | 37 | * SkDELETE() on the generator. Therefore, generator should be |
| michael@0 | 38 | * allocated with SkNEW() or SkNEW_ARGS(). |
| michael@0 | 39 | */ |
| michael@0 | 40 | static bool Install(SkImageGenerator* gen, SkBitmap* dst); |
| michael@0 | 41 | |
| michael@0 | 42 | protected: |
| michael@0 | 43 | virtual ~SkCachingPixelRef(); |
| michael@0 | 44 | virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE; |
| michael@0 | 45 | virtual void onUnlockPixels() SK_OVERRIDE; |
| michael@0 | 46 | virtual bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; } |
| michael@0 | 47 | |
| michael@0 | 48 | virtual SkData* onRefEncodedData() SK_OVERRIDE { |
| michael@0 | 49 | return fImageGenerator->refEncodedData(); |
| michael@0 | 50 | } |
| michael@0 | 51 | // No need to flatten this object. When flattening an SkBitmap, |
| michael@0 | 52 | // SkWriteBuffer will check the encoded data and write that |
| michael@0 | 53 | // instead. |
| michael@0 | 54 | // Future implementations of SkWriteBuffer will need to |
| michael@0 | 55 | // special case for onRefEncodedData as well. |
| michael@0 | 56 | SK_DECLARE_UNFLATTENABLE_OBJECT() |
| michael@0 | 57 | |
| michael@0 | 58 | private: |
| michael@0 | 59 | SkImageGenerator* const fImageGenerator; |
| michael@0 | 60 | bool fErrorInDecoding; |
| michael@0 | 61 | void* fScaledCacheId; |
| michael@0 | 62 | const size_t fRowBytes; |
| michael@0 | 63 | |
| michael@0 | 64 | SkCachingPixelRef(const SkImageInfo&, SkImageGenerator*, size_t rowBytes); |
| michael@0 | 65 | |
| michael@0 | 66 | typedef SkPixelRef INHERITED; |
| michael@0 | 67 | }; |
| michael@0 | 68 | |
| michael@0 | 69 | #endif // SkCachingPixelRef_DEFINED |
