The Tor Browser: gfx/thebes/gfxReusableImageSurfaceWrapper.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "gfxReusableImageSurfaceWrapper.h"

     6 #include "gfxImageSurface.h"

     8 gfxReusableImageSurfaceWrapper::gfxReusableImageSurfaceWrapper(gfxImageSurface* aSurface)

     9   : mSurface(aSurface)

    10 {

    11   MOZ_COUNT_CTOR(gfxReusableImageSurfaceWrapper);

    12 }

    14 gfxReusableImageSurfaceWrapper::~gfxReusableImageSurfaceWrapper()

    15 {

    16   MOZ_COUNT_DTOR(gfxReusableImageSurfaceWrapper);

    17 }

    19 void

    20 gfxReusableImageSurfaceWrapper::ReadLock()

    21 {

    22   NS_ASSERT_OWNINGTHREAD(gfxReusableImageSurfaceWrapper);

    23   AddRef();

    24 }

    26 void

    27 gfxReusableImageSurfaceWrapper::ReadUnlock()

    28 {

    29   Release();

    30 }

    32 gfxReusableSurfaceWrapper*

    33 gfxReusableImageSurfaceWrapper::GetWritable(gfxImageSurface** aSurface)

    34 {

    35   NS_ASSERT_OWNINGTHREAD(gfxReusableImageSurfaceWrapper);

    37   if (mRefCnt == 1) {

    38     *aSurface = mSurface;

    39     return this;

    40   }

    42   // Something else is reading the surface, copy it

    43   gfxImageSurface* copySurface = new gfxImageSurface(mSurface->GetSize(), mSurface->Format(), false);

    44   copySurface->CopyFrom(mSurface);

    45   *aSurface = copySurface;

    47   return new gfxReusableImageSurfaceWrapper(copySurface);

    48 }

    50 const unsigned char*

    51 gfxReusableImageSurfaceWrapper::GetReadOnlyData() const

    52 {

    53   return mSurface->Data();

    54 }

    56 gfxImageFormat

    57 gfxReusableImageSurfaceWrapper::Format()

    58 {

    59   return mSurface->Format();

    60 }

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