gecko-dev/image/ImageWrapper.cpp
Timothy Nikkel 9e89a17b91 Bug 1260324. Don't draw garbage to the screen if an image doesn't happen to be decoded. r=seth
Layout has been using imgIContainer::IsOpaque to determine if the image will draw opaquely to all pixels it covers, and doing culling based on this.

However imgIContainer::IsOpaque doesn't guarantee anything. It only describes if the image, when in a decoded state, has all opaque pixels. So if the image doesn't have fully decoded frames around (because they got discarded) it may not draw opaquely to all of its pixels.

So we create a new function that first checks if there is a fully decoded frame.
2016-08-22 21:15:38 -05:00

324 lines
7.5 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/. */
#include "ImageWrapper.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/RefPtr.h"
#include "Orientation.h"
#include "mozilla/MemoryReporting.h"
namespace mozilla {
using gfx::DataSourceSurface;
using gfx::IntSize;
using gfx::SamplingFilter;
using gfx::SourceSurface;
using layers::LayerManager;
using layers::ImageContainer;
namespace image {
// Inherited methods from Image.
already_AddRefed<ProgressTracker>
ImageWrapper::GetProgressTracker()
{
return mInnerImage->GetProgressTracker();
}
size_t
ImageWrapper::SizeOfSourceWithComputedFallback(MallocSizeOf aMallocSizeOf) const
{
return mInnerImage->SizeOfSourceWithComputedFallback(aMallocSizeOf);
}
void
ImageWrapper::CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
MallocSizeOf aMallocSizeOf) const
{
mInnerImage->CollectSizeOfSurfaces(aCounters, aMallocSizeOf);
}
void
ImageWrapper::IncrementAnimationConsumers()
{
MOZ_ASSERT(NS_IsMainThread(), "Main thread only to encourage serialization "
"with DecrementAnimationConsumers");
mInnerImage->IncrementAnimationConsumers();
}
void
ImageWrapper::DecrementAnimationConsumers()
{
MOZ_ASSERT(NS_IsMainThread(), "Main thread only to encourage serialization "
"with IncrementAnimationConsumers");
mInnerImage->DecrementAnimationConsumers();
}
#ifdef DEBUG
uint32_t
ImageWrapper::GetAnimationConsumers()
{
return mInnerImage->GetAnimationConsumers();
}
#endif
nsresult
ImageWrapper::OnImageDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aInStr,
uint64_t aSourceOffset,
uint32_t aCount)
{
return mInnerImage->OnImageDataAvailable(aRequest, aContext, aInStr,
aSourceOffset, aCount);
}
nsresult
ImageWrapper::OnImageDataComplete(nsIRequest* aRequest,
nsISupports* aContext,
nsresult aStatus,
bool aLastPart)
{
return mInnerImage->OnImageDataComplete(aRequest, aContext, aStatus,
aLastPart);
}
void
ImageWrapper::OnSurfaceDiscarded()
{
return mInnerImage->OnSurfaceDiscarded();
}
void
ImageWrapper::SetInnerWindowID(uint64_t aInnerWindowId)
{
mInnerImage->SetInnerWindowID(aInnerWindowId);
}
uint64_t
ImageWrapper::InnerWindowID() const
{
return mInnerImage->InnerWindowID();
}
bool
ImageWrapper::HasError()
{
return mInnerImage->HasError();
}
void
ImageWrapper::SetHasError()
{
mInnerImage->SetHasError();
}
ImageURL*
ImageWrapper::GetURI()
{
return mInnerImage->GetURI();
}
// Methods inherited from XPCOM interfaces.
NS_IMPL_ISUPPORTS(ImageWrapper, imgIContainer)
NS_IMETHODIMP
ImageWrapper::GetWidth(int32_t* aWidth)
{
return mInnerImage->GetWidth(aWidth);
}
NS_IMETHODIMP
ImageWrapper::GetHeight(int32_t* aHeight)
{
return mInnerImage->GetHeight(aHeight);
}
NS_IMETHODIMP
ImageWrapper::GetIntrinsicSize(nsSize* aSize)
{
return mInnerImage->GetIntrinsicSize(aSize);
}
NS_IMETHODIMP
ImageWrapper::GetIntrinsicRatio(nsSize* aSize)
{
return mInnerImage->GetIntrinsicRatio(aSize);
}
NS_IMETHODIMP_(Orientation)
ImageWrapper::GetOrientation()
{
return mInnerImage->GetOrientation();
}
NS_IMETHODIMP
ImageWrapper::GetType(uint16_t* aType)
{
return mInnerImage->GetType(aType);
}
NS_IMETHODIMP
ImageWrapper::GetAnimated(bool* aAnimated)
{
return mInnerImage->GetAnimated(aAnimated);
}
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
ImageWrapper::GetFrame(uint32_t aWhichFrame,
uint32_t aFlags)
{
return mInnerImage->GetFrame(aWhichFrame, aFlags);
}
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
ImageWrapper::GetFrameAtSize(const IntSize& aSize,
uint32_t aWhichFrame,
uint32_t aFlags)
{
return mInnerImage->GetFrameAtSize(aSize, aWhichFrame, aFlags);
}
NS_IMETHODIMP_(bool)
ImageWrapper::WillDrawOpaqueNow()
{
return mInnerImage->WillDrawOpaqueNow();
}
NS_IMETHODIMP_(bool)
ImageWrapper::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
{
return mInnerImage->IsImageContainerAvailable(aManager, aFlags);
}
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
ImageWrapper::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
{
return mInnerImage->GetImageContainer(aManager, aFlags);
}
NS_IMETHODIMP_(DrawResult)
ImageWrapper::Draw(gfxContext* aContext,
const nsIntSize& aSize,
const ImageRegion& aRegion,
uint32_t aWhichFrame,
SamplingFilter aSamplingFilter,
const Maybe<SVGImageContext>& aSVGContext,
uint32_t aFlags)
{
return mInnerImage->Draw(aContext, aSize, aRegion, aWhichFrame,
aSamplingFilter, aSVGContext, aFlags);
}
NS_IMETHODIMP
ImageWrapper::StartDecoding()
{
return mInnerImage->StartDecoding();
}
NS_IMETHODIMP
ImageWrapper::RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags)
{
return mInnerImage->RequestDecodeForSize(aSize, aFlags);
}
NS_IMETHODIMP
ImageWrapper::LockImage()
{
MOZ_ASSERT(NS_IsMainThread(),
"Main thread to encourage serialization with UnlockImage");
return mInnerImage->LockImage();
}
NS_IMETHODIMP
ImageWrapper::UnlockImage()
{
MOZ_ASSERT(NS_IsMainThread(),
"Main thread to encourage serialization with LockImage");
return mInnerImage->UnlockImage();
}
NS_IMETHODIMP
ImageWrapper::RequestDiscard()
{
return mInnerImage->RequestDiscard();
}
NS_IMETHODIMP_(void)
ImageWrapper::RequestRefresh(const TimeStamp& aTime)
{
return mInnerImage->RequestRefresh(aTime);
}
NS_IMETHODIMP
ImageWrapper::GetAnimationMode(uint16_t* aAnimationMode)
{
return mInnerImage->GetAnimationMode(aAnimationMode);
}
NS_IMETHODIMP
ImageWrapper::SetAnimationMode(uint16_t aAnimationMode)
{
return mInnerImage->SetAnimationMode(aAnimationMode);
}
NS_IMETHODIMP
ImageWrapper::ResetAnimation()
{
return mInnerImage->ResetAnimation();
}
NS_IMETHODIMP_(float)
ImageWrapper::GetFrameIndex(uint32_t aWhichFrame)
{
return mInnerImage->GetFrameIndex(aWhichFrame);
}
NS_IMETHODIMP_(int32_t)
ImageWrapper::GetFirstFrameDelay()
{
return mInnerImage->GetFirstFrameDelay();
}
NS_IMETHODIMP_(void)
ImageWrapper::SetAnimationStartTime(const TimeStamp& aTime)
{
mInnerImage->SetAnimationStartTime(aTime);
}
void
ImageWrapper::PropagateUseCounters(nsIDocument* aParentDocument)
{
mInnerImage->PropagateUseCounters(aParentDocument);
}
nsIntSize
ImageWrapper::OptimalImageSizeForDest(const gfxSize& aDest,
uint32_t aWhichFrame,
SamplingFilter aSamplingFilter,
uint32_t aFlags)
{
return mInnerImage->OptimalImageSizeForDest(aDest, aWhichFrame,
aSamplingFilter, aFlags);
}
NS_IMETHODIMP_(nsIntRect)
ImageWrapper::GetImageSpaceInvalidationRect(const nsIntRect& aRect)
{
return mInnerImage->GetImageSpaceInvalidationRect(aRect);
}
already_AddRefed<imgIContainer>
ImageWrapper::Unwrap()
{
return mInnerImage->Unwrap();
}
} // namespace image
} // namespace mozilla