The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/utils/win/SkDWriteFontFileStream.h	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,76 @@
     1.4 +/*
     1.5 + * Copyright 2012 Google Inc.
     1.6 + *
     1.7 + * Use of this source code is governed by a BSD-style license that can be
     1.8 + * found in the LICENSE file.
     1.9 + */
    1.10 +
    1.11 +#ifndef SkDWriteFontFileStream_DEFINED
    1.12 +#define SkDWriteFontFileStream_DEFINED
    1.13 +
    1.14 +#include "SkTypes.h"
    1.15 +
    1.16 +#include "SkStream.h"
    1.17 +#include "SkTScopedComPtr.h"
    1.18 +
    1.19 +#include <dwrite.h>
    1.20 +
    1.21 +/**
    1.22 + *  An SkStream backed by an IDWriteFontFileStream.
    1.23 + *  This allows Skia code to read an IDWriteFontFileStream.
    1.24 + */
    1.25 +class SkDWriteFontFileStream : public SkStreamMemory {
    1.26 +public:
    1.27 +    explicit SkDWriteFontFileStream(IDWriteFontFileStream* fontFileStream);
    1.28 +    virtual ~SkDWriteFontFileStream();
    1.29 +
    1.30 +    virtual size_t read(void* buffer, size_t size) SK_OVERRIDE;
    1.31 +    virtual bool isAtEnd() const SK_OVERRIDE;
    1.32 +    virtual bool rewind() SK_OVERRIDE;
    1.33 +    virtual SkDWriteFontFileStream* duplicate() const SK_OVERRIDE;
    1.34 +    virtual size_t getPosition() const SK_OVERRIDE;
    1.35 +    virtual bool seek(size_t position) SK_OVERRIDE;
    1.36 +    virtual bool move(long offset) SK_OVERRIDE;
    1.37 +    virtual SkDWriteFontFileStream* fork() const SK_OVERRIDE;
    1.38 +    virtual size_t getLength() const SK_OVERRIDE;
    1.39 +    virtual const void* getMemoryBase() SK_OVERRIDE;
    1.40 +
    1.41 +private:
    1.42 +    SkTScopedComPtr<IDWriteFontFileStream> fFontFileStream;
    1.43 +    size_t fPos;
    1.44 +    const void* fLockedMemory;
    1.45 +    void* fFragmentLock;
    1.46 +};
    1.47 +
    1.48 +/**
    1.49 + *  An IDWriteFontFileStream backed by an SkStream.
    1.50 + *  This allows DirectWrite to read an SkStream.
    1.51 + */
    1.52 +class SkDWriteFontFileStreamWrapper : public IDWriteFontFileStream {
    1.53 +public:
    1.54 +    // IUnknown methods
    1.55 +    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void** ppvObject);
    1.56 +    virtual ULONG STDMETHODCALLTYPE AddRef();
    1.57 +    virtual ULONG STDMETHODCALLTYPE Release();
    1.58 +
    1.59 +    // IDWriteFontFileStream methods
    1.60 +    virtual HRESULT STDMETHODCALLTYPE ReadFileFragment(
    1.61 +        void const** fragmentStart,
    1.62 +        UINT64 fileOffset,
    1.63 +        UINT64 fragmentSize,
    1.64 +        void** fragmentContext);
    1.65 +
    1.66 +    virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext);
    1.67 +    virtual HRESULT STDMETHODCALLTYPE GetFileSize(UINT64* fileSize);
    1.68 +    virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(UINT64* lastWriteTime);
    1.69 +
    1.70 +    static HRESULT Create(SkStream* stream, SkDWriteFontFileStreamWrapper** streamFontFileStream);
    1.71 +
    1.72 +private:
    1.73 +    explicit SkDWriteFontFileStreamWrapper(SkStream* stream);
    1.74 +
    1.75 +    ULONG fRefCount;
    1.76 +    SkAutoTUnref<SkStream> fStream;
    1.77 +    SkMutex fStreamMutex;
    1.78 +};
    1.79 +#endif