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In addition to the image container, the draw result can also be useful for callers to know whether or not the surface(s) in the container are fully decoded or not. This is used in subsequent parts to avoid flickering in some cases.
145 lines
4.0 KiB
C++
145 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FrozenImage.h"
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namespace mozilla {
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using namespace gfx;
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using layers::ImageContainer;
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using layers::LayerManager;
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namespace image {
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void
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FrozenImage::IncrementAnimationConsumers()
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{
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// Do nothing. This will prevent animation from starting if there are no other
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// instances of this image.
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}
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void
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FrozenImage::DecrementAnimationConsumers()
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{
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// Do nothing.
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}
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NS_IMETHODIMP
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FrozenImage::GetAnimated(bool* aAnimated)
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{
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bool dummy;
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nsresult rv = InnerImage()->GetAnimated(&dummy);
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if (NS_SUCCEEDED(rv)) {
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*aAnimated = false;
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}
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return rv;
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}
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NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
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FrozenImage::GetFrame(uint32_t aWhichFrame,
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uint32_t aFlags)
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{
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return InnerImage()->GetFrame(FRAME_FIRST, aFlags);
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}
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NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
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FrozenImage::GetFrameAtSize(const IntSize& aSize,
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uint32_t aWhichFrame,
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uint32_t aFlags)
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{
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return InnerImage()->GetFrameAtSize(aSize, FRAME_FIRST, aFlags);
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}
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NS_IMETHODIMP_(bool)
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FrozenImage::IsImageContainerAvailable(LayerManager* aManager, uint32_t aFlags)
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{
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return false;
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}
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NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
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FrozenImage::GetImageContainer(layers::LayerManager* aManager, uint32_t aFlags)
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{
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// XXX(seth): GetImageContainer does not currently support anything but the
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// current frame. We work around this by always returning null, but if it ever
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// turns out that FrozenImage is widely used on codepaths that can actually
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// benefit from GetImageContainer, it would be a good idea to fix that method
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// for performance reasons.
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return nullptr;
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}
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NS_IMETHODIMP_(bool)
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FrozenImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
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const IntSize& aSize,
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uint32_t aFlags)
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{
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return false;
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}
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NS_IMETHODIMP_(ImgDrawResult)
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FrozenImage::GetImageContainerAtSize(layers::LayerManager* aManager,
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const gfx::IntSize& aSize,
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const Maybe<SVGImageContext>& aSVGContext,
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uint32_t aFlags,
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layers::ImageContainer** aOutContainer)
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{
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// XXX(seth): GetImageContainer does not currently support anything but the
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// current frame. We work around this by always returning null, but if it ever
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// turns out that FrozenImage is widely used on codepaths that can actually
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// benefit from GetImageContainer, it would be a good idea to fix that method
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// for performance reasons.
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return ImgDrawResult::NOT_SUPPORTED;
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}
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NS_IMETHODIMP_(ImgDrawResult)
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FrozenImage::Draw(gfxContext* aContext,
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const nsIntSize& aSize,
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const ImageRegion& aRegion,
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uint32_t /* aWhichFrame - ignored */,
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SamplingFilter aSamplingFilter,
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const Maybe<SVGImageContext>& aSVGContext,
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uint32_t aFlags,
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float aOpacity)
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{
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return InnerImage()->Draw(aContext, aSize, aRegion, FRAME_FIRST,
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aSamplingFilter, aSVGContext, aFlags, aOpacity);
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}
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NS_IMETHODIMP_(void)
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FrozenImage::RequestRefresh(const TimeStamp& aTime)
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{
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// Do nothing.
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}
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NS_IMETHODIMP
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FrozenImage::GetAnimationMode(uint16_t* aAnimationMode)
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{
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*aAnimationMode = kNormalAnimMode;
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return NS_OK;
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}
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NS_IMETHODIMP
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FrozenImage::SetAnimationMode(uint16_t aAnimationMode)
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{
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// Do nothing.
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return NS_OK;
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}
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NS_IMETHODIMP
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FrozenImage::ResetAnimation()
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{
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// Do nothing.
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return NS_OK;
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}
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NS_IMETHODIMP_(float)
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FrozenImage::GetFrameIndex(uint32_t aWhichFrame)
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{
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MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE, "Invalid argument");
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return 0;
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}
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} // namespace image
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} // namespace mozilla
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