mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-16 14:55:47 +00:00
70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/**
|
|
* LookupResult is the return type of SurfaceCache's Lookup*() functions. It
|
|
* combines a surface with relevant metadata tracked by SurfaceCache.
|
|
*/
|
|
|
|
#ifndef mozilla_image_LookupResult_h
|
|
#define mozilla_image_LookupResult_h
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "mozilla/Move.h"
|
|
#include "imgFrame.h"
|
|
|
|
namespace mozilla {
|
|
namespace image {
|
|
|
|
/**
|
|
* LookupResult is the return type of SurfaceCache's Lookup*() functions. It
|
|
* combines a surface with relevant metadata tracked by SurfaceCache.
|
|
*/
|
|
class MOZ_STACK_CLASS LookupResult
|
|
{
|
|
public:
|
|
LookupResult()
|
|
: mIsExactMatch(false)
|
|
{ }
|
|
|
|
LookupResult(LookupResult&& aOther)
|
|
: mDrawableRef(Move(aOther.mDrawableRef))
|
|
, mIsExactMatch(aOther.mIsExactMatch)
|
|
{ }
|
|
|
|
LookupResult(DrawableFrameRef&& aDrawableRef, bool aIsExactMatch)
|
|
: mDrawableRef(Move(aDrawableRef))
|
|
, mIsExactMatch(aIsExactMatch)
|
|
{ }
|
|
|
|
LookupResult& operator=(LookupResult&& aOther)
|
|
{
|
|
MOZ_ASSERT(&aOther != this, "Self-move-assignment is not supported");
|
|
mDrawableRef = Move(aOther.mDrawableRef);
|
|
mIsExactMatch = aOther.mIsExactMatch;
|
|
return *this;
|
|
}
|
|
|
|
DrawableFrameRef& DrawableRef() { return mDrawableRef; }
|
|
const DrawableFrameRef& DrawableRef() const { return mDrawableRef; }
|
|
|
|
/// @return true if this LookupResult contains a surface.
|
|
explicit operator bool() const { return bool(mDrawableRef); }
|
|
|
|
/// @return true if the surface is an exact match for the Lookup*() arguments.
|
|
bool IsExactMatch() const { return mIsExactMatch; }
|
|
|
|
private:
|
|
LookupResult(const LookupResult&) = delete;
|
|
|
|
DrawableFrameRef mDrawableRef;
|
|
bool mIsExactMatch;
|
|
};
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_image_LookupResult_h
|