image/DynamicImage.cpp
author Ryan VanderMeulen <ryanvm@gmail.com>
Wed, 17 Jan 2018 15:55:38 -0500
changeset 399709 ef04f3ad847540c876c130b7d140a960d922a024
parent 396246 4e2cf0afd644cc0f2dfb0f6def3f1c1d25a19d27
child 421472 7597bbcc9d66111326aa69048ad5847bdc7497f2
permissions -rw-r--r--
Backed out 20 changesets (bug 1411654) for incorrect android:debuggable. r=nalexander, a=RyanVM Backed out changeset cfad693be918 (bug 1411654) Backed out changeset 55776829a744 (bug 1411654) Backed out changeset c5bf85d56fed (bug 1411654) Backed out changeset c270f97bb0da (bug 1411654) Backed out changeset fde9bf9c14c3 (bug 1411654) Backed out changeset 01836fd98c63 (bug 1411654) Backed out changeset 730a70767743 (bug 1411654) Backed out changeset 690e265c684c (bug 1411654) Backed out changeset f918500d9cf5 (bug 1411654) Backed out changeset cec2b8828cc8 (bug 1411654) Backed out changeset 76085ddd5ac7 (bug 1411654) Backed out changeset 2b37201606f5 (bug 1411654) Backed out changeset d0d513d1c379 (bug 1411654) Backed out changeset e7b0cc801cf1 (bug 1411654) Backed out changeset 901b304603d9 (bug 1411654) Backed out changeset 373c9a71d945 (bug 1411654) Backed out changeset 3dc3beab95f8 (bug 1411654) Backed out changeset 22a861db1573 (bug 1411654) Backed out changeset 0850b319efd4 (bug 1411654) Backed out changeset d276d3deba05 (bug 1411654)

/* -*- 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 "DynamicImage.h"
#include "gfxPlatform.h"
#include "gfxUtils.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/RefPtr.h"
#include "ImageRegion.h"
#include "Orientation.h"
#include "SVGImageContext.h"

#include "mozilla/MemoryReporting.h"

using namespace mozilla;
using namespace mozilla::gfx;
using mozilla::layers::LayerManager;
using mozilla::layers::ImageContainer;

namespace mozilla {
namespace image {

// Inherited methods from Image.

already_AddRefed<ProgressTracker>
DynamicImage::GetProgressTracker()
{
  return nullptr;
}

size_t
DynamicImage::SizeOfSourceWithComputedFallback(SizeOfState& aState) const
{
  return 0;
}

void
DynamicImage::CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
                                    MallocSizeOf aMallocSizeOf) const
{
  // We can't report anything useful because gfxDrawable doesn't expose this
  // information.
}

void
DynamicImage::IncrementAnimationConsumers()
{ }

void
DynamicImage::DecrementAnimationConsumers()
{ }

#ifdef DEBUG
uint32_t
DynamicImage::GetAnimationConsumers()
{
  return 0;
}
#endif

nsresult
DynamicImage::OnImageDataAvailable(nsIRequest* aRequest,
                                   nsISupports* aContext,
                                   nsIInputStream* aInStr,
                                   uint64_t aSourceOffset,
                                   uint32_t aCount)
{
  return NS_OK;
}

nsresult
DynamicImage::OnImageDataComplete(nsIRequest* aRequest,
                                  nsISupports* aContext,
                                  nsresult aStatus,
                                  bool aLastPart)
{
  return NS_OK;
}

void
DynamicImage::OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey)
{ }

void
DynamicImage::SetInnerWindowID(uint64_t aInnerWindowId)
{ }

uint64_t
DynamicImage::InnerWindowID() const
{
  return 0;
}

bool
DynamicImage::HasError()
{
  return !mDrawable;
}

void
DynamicImage::SetHasError()
{ }

ImageURL*
DynamicImage::GetURI()
{
  return nullptr;
}

// Methods inherited from XPCOM interfaces.

NS_IMPL_ISUPPORTS(DynamicImage, imgIContainer)

NS_IMETHODIMP
DynamicImage::GetWidth(int32_t* aWidth)
{
  *aWidth = mDrawable->Size().width;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetHeight(int32_t* aHeight)
{
  *aHeight = mDrawable->Size().height;
  return NS_OK;
}

nsresult
DynamicImage::GetNativeSizes(nsTArray<IntSize>& aNativeSizes) const
{
  return NS_ERROR_NOT_IMPLEMENTED;
}

size_t
DynamicImage::GetNativeSizesLength() const
{
  return 0;
}

NS_IMETHODIMP
DynamicImage::GetIntrinsicSize(nsSize* aSize)
{
  IntSize intSize(mDrawable->Size());
  *aSize = nsSize(intSize.width, intSize.height);
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetIntrinsicRatio(nsSize* aSize)
{
  IntSize intSize(mDrawable->Size());
  *aSize = nsSize(intSize.width, intSize.height);
  return NS_OK;
}

NS_IMETHODIMP_(Orientation)
DynamicImage::GetOrientation()
{
  return Orientation();
}

NS_IMETHODIMP
DynamicImage::GetType(uint16_t* aType)
{
  *aType = imgIContainer::TYPE_RASTER;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::GetAnimated(bool* aAnimated)
{
  *aAnimated = false;
  return NS_OK;
}

NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
DynamicImage::GetFrame(uint32_t aWhichFrame,
                       uint32_t aFlags)
{
  IntSize size(mDrawable->Size());
  return GetFrameAtSize(IntSize(size.width, size.height),
                        aWhichFrame,
                        aFlags);
}

NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
DynamicImage::GetFrameAtSize(const IntSize& aSize,
                             uint32_t aWhichFrame,
                             uint32_t aFlags)
{
  RefPtr<DrawTarget> dt = gfxPlatform::GetPlatform()->
    CreateOffscreenContentDrawTarget(aSize, SurfaceFormat::B8G8R8A8);
  if (!dt || !dt->IsValid()) {
    gfxWarning() <<
      "DynamicImage::GetFrame failed in CreateOffscreenContentDrawTarget";
    return nullptr;
  }
  RefPtr<gfxContext> context = gfxContext::CreateOrNull(dt);
  MOZ_ASSERT(context); // already checked the draw target above

  auto result = Draw(context, aSize, ImageRegion::Create(aSize),
                     aWhichFrame, SamplingFilter::POINT, Nothing(), aFlags,
                     1.0);

  return result == ImgDrawResult::SUCCESS ? dt->Snapshot() : nullptr;
}

NS_IMETHODIMP_(bool)
DynamicImage::WillDrawOpaqueNow()
{
  return false;
}

NS_IMETHODIMP_(bool)
DynamicImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
{
  return false;
}

NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
DynamicImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
{
  return nullptr;
}

NS_IMETHODIMP_(bool)
DynamicImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
                                              const IntSize& aSize,
                                              uint32_t aFlags)
{
  return false;
}

NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
DynamicImage::GetImageContainerAtSize(LayerManager* aManager,
                                      const IntSize& aSize,
                                      const Maybe<SVGImageContext>& aSVGContext,
                                      uint32_t aFlags)
{
  return nullptr;
}

NS_IMETHODIMP_(ImgDrawResult)
DynamicImage::Draw(gfxContext* aContext,
                   const nsIntSize& aSize,
                   const ImageRegion& aRegion,
                   uint32_t aWhichFrame,
                   SamplingFilter aSamplingFilter,
                   const Maybe<SVGImageContext>& aSVGContext,
                   uint32_t aFlags,
                   float aOpacity)
{
  MOZ_ASSERT(!aSize.IsEmpty(), "Unexpected empty size");

  IntSize drawableSize(mDrawable->Size());

  if (aSize == drawableSize) {
    gfxUtils::DrawPixelSnapped(aContext, mDrawable, SizeDouble(drawableSize), aRegion,
                               SurfaceFormat::B8G8R8A8, aSamplingFilter,
                               aOpacity);
    return ImgDrawResult::SUCCESS;
  }

  gfxSize scale(double(aSize.width) / drawableSize.width,
                double(aSize.height) / drawableSize.height);

  ImageRegion region(aRegion);
  region.Scale(1.0 / scale.width, 1.0 / scale.height);

  gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
  aContext->Multiply(gfxMatrix::Scaling(scale.width, scale.height));

  gfxUtils::DrawPixelSnapped(aContext, mDrawable, SizeDouble(drawableSize), region,
                             SurfaceFormat::B8G8R8A8, aSamplingFilter,
                             aOpacity);
  return ImgDrawResult::SUCCESS;
}

NS_IMETHODIMP
DynamicImage::StartDecoding(uint32_t aFlags)
{
  return NS_OK;
}

bool
DynamicImage::StartDecodingWithResult(uint32_t aFlags)
{
  return true;
}

NS_IMETHODIMP
DynamicImage::RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags)
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::LockImage()
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::UnlockImage()
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::RequestDiscard()
{
  return NS_OK;
}

NS_IMETHODIMP_(void)
DynamicImage::RequestRefresh(const mozilla::TimeStamp& aTime)
{ }

NS_IMETHODIMP
DynamicImage::GetAnimationMode(uint16_t* aAnimationMode)
{
  *aAnimationMode = kNormalAnimMode;
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::SetAnimationMode(uint16_t aAnimationMode)
{
  return NS_OK;
}

NS_IMETHODIMP
DynamicImage::ResetAnimation()
{
  return NS_OK;
}

NS_IMETHODIMP_(float)
DynamicImage::GetFrameIndex(uint32_t aWhichFrame)
{
  return 0;
}

NS_IMETHODIMP_(int32_t)
DynamicImage::GetFirstFrameDelay()
{
  return 0;
}

NS_IMETHODIMP_(void)
DynamicImage::SetAnimationStartTime(const mozilla::TimeStamp& aTime)
{ }

nsIntSize
DynamicImage::OptimalImageSizeForDest(const gfxSize& aDest,
                                      uint32_t aWhichFrame,
                                      SamplingFilter aSamplingFilter,
                                      uint32_t aFlags)
{
  IntSize size(mDrawable->Size());
  return nsIntSize(size.width, size.height);
}

NS_IMETHODIMP_(nsIntRect)
DynamicImage::GetImageSpaceInvalidationRect(const nsIntRect& aRect)
{
  return aRect;
}

already_AddRefed<imgIContainer>
DynamicImage::Unwrap()
{
  nsCOMPtr<imgIContainer> self(this);
  return self.forget();
}

void
DynamicImage::PropagateUseCounters(nsIDocument*)
{
  // No use counters.
}

} // namespace image
} // namespace mozilla