The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/utils/win/SkDWriteFontFileStream.h
gfx/skia/trunk/src/utils/win/SkDWriteFontFileStream.h
- branch
- TOR_BUG_9701
- changeset 9
- a63d609f5ebe
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| -1:000000000000 | 0:6e568e40d103 |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkDWriteFontFileStream_DEFINED | |
| 9 #define SkDWriteFontFileStream_DEFINED | |
| 10 | |
| 11 #include "SkTypes.h" | |
| 12 | |
| 13 #include "SkStream.h" | |
| 14 #include "SkTScopedComPtr.h" | |
| 15 | |
| 16 #include <dwrite.h> | |
| 17 | |
| 18 /** | |
| 19 * An SkStream backed by an IDWriteFontFileStream. | |
| 20 * This allows Skia code to read an IDWriteFontFileStream. | |
| 21 */ | |
| 22 class SkDWriteFontFileStream : public SkStreamMemory { | |
| 23 public: | |
| 24 explicit SkDWriteFontFileStream(IDWriteFontFileStream* fontFileStream); | |
| 25 virtual ~SkDWriteFontFileStream(); | |
| 26 | |
| 27 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; | |
| 28 virtual bool isAtEnd() const SK_OVERRIDE; | |
| 29 virtual bool rewind() SK_OVERRIDE; | |
| 30 virtual SkDWriteFontFileStream* duplicate() const SK_OVERRIDE; | |
| 31 virtual size_t getPosition() const SK_OVERRIDE; | |
| 32 virtual bool seek(size_t position) SK_OVERRIDE; | |
| 33 virtual bool move(long offset) SK_OVERRIDE; | |
| 34 virtual SkDWriteFontFileStream* fork() const SK_OVERRIDE; | |
| 35 virtual size_t getLength() const SK_OVERRIDE; | |
| 36 virtual const void* getMemoryBase() SK_OVERRIDE; | |
| 37 | |
| 38 private: | |
| 39 SkTScopedComPtr<IDWriteFontFileStream> fFontFileStream; | |
| 40 size_t fPos; | |
| 41 const void* fLockedMemory; | |
| 42 void* fFragmentLock; | |
| 43 }; | |
| 44 | |
| 45 /** | |
| 46 * An IDWriteFontFileStream backed by an SkStream. | |
| 47 * This allows DirectWrite to read an SkStream. | |
| 48 */ | |
| 49 class SkDWriteFontFileStreamWrapper : public IDWriteFontFileStream { | |
| 50 public: | |
| 51 // IUnknown methods | |
| 52 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void** ppvObject); | |
| 53 virtual ULONG STDMETHODCALLTYPE AddRef(); | |
| 54 virtual ULONG STDMETHODCALLTYPE Release(); | |
| 55 | |
| 56 // IDWriteFontFileStream methods | |
| 57 virtual HRESULT STDMETHODCALLTYPE ReadFileFragment( | |
| 58 void const** fragmentStart, | |
| 59 UINT64 fileOffset, | |
| 60 UINT64 fragmentSize, | |
| 61 void** fragmentContext); | |
| 62 | |
| 63 virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext); | |
| 64 virtual HRESULT STDMETHODCALLTYPE GetFileSize(UINT64* fileSize); | |
| 65 virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(UINT64* lastWriteTime); | |
| 66 | |
| 67 static HRESULT Create(SkStream* stream, SkDWriteFontFileStreamWrapper** streamFontFileStream); | |
| 68 | |
| 69 private: | |
| 70 explicit SkDWriteFontFileStreamWrapper(SkStream* stream); | |
| 71 | |
| 72 ULONG fRefCount; | |
| 73 SkAutoTUnref<SkStream> fStream; | |
| 74 SkMutex fStreamMutex; | |
| 75 }; | |
| 76 #endif |
