image/DynamicImage.cpp
author Kartikaya Gupta <kgupta@mozilla.com>
Thu, 15 Mar 2018 15:25:09 -0400
changeset 408344 a27ceb86fbd002b8aafd2f6377c315c11254af0c
parent 396187 4e2cf0afd644cc0f2dfb0f6def3f1c1d25a19d27
child 421522 7597bbcc9d66111326aa69048ad5847bdc7497f2
permissions -rw-r--r--
Bug 1445662 - Remove ProcessTouchVelocity from PAPZCTreeManager.ipdl. r=rhunt This function is never actually called over IPDL. It is called directly on the concrete APZCTreeManager instance by the AndroidDynamicToolbarAnimator code, both of which live in the compositor. So we don't need to expose this method on IAPZCTreeManager or over PAPZCTreeManager.

/* -*- 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