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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /image/FrozenImage.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'image/FrozenImage.h')
-rw-r--r-- | image/FrozenImage.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/image/FrozenImage.h b/image/FrozenImage.h new file mode 100644 index 0000000000..6f580c826c --- /dev/null +++ b/image/FrozenImage.h @@ -0,0 +1,83 @@ +/* -*- 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/. */ + +#ifndef mozilla_image_FrozenImage_h +#define mozilla_image_FrozenImage_h + +#include "ImageWrapper.h" +#include "mozilla/gfx/2D.h" +#include "mozilla/RefPtr.h" + +namespace mozilla { +namespace image { + +/** + * An Image wrapper that disables animation, freezing the image at its first + * frame. It does this using two strategies. If this is the only instance of the + * image, animation will never start, because IncrementAnimationConsumers is + * ignored. If there is another instance that is animated, that's still OK, + * because any imgIContainer method that is affected by animation gets its + * aWhichFrame argument set to FRAME_FIRST when it passes through FrozenImage. + * + * XXX(seth): There a known (performance, not correctness) issue with + * GetImageContainer. See the comments for that method for more information. + */ +class FrozenImage : public ImageWrapper { + typedef gfx::SourceSurface SourceSurface; + + public: + NS_INLINE_DECL_REFCOUNTING_INHERITED(FrozenImage, ImageWrapper) + + virtual void IncrementAnimationConsumers() override; + virtual void DecrementAnimationConsumers() override; + + bool IsNonAnimated() const; + + NS_IMETHOD GetAnimated(bool* aAnimated) override; + NS_IMETHOD_(already_AddRefed<SourceSurface>) + GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override; + NS_IMETHOD_(already_AddRefed<SourceSurface>) + GetFrameAtSize(const gfx::IntSize& aSize, uint32_t aWhichFrame, + uint32_t aFlags) override; + NS_IMETHOD_(bool) + IsImageContainerAvailable(WindowRenderer* aRenderer, + uint32_t aFlags) override; + NS_IMETHOD_(ImgDrawResult) + GetImageProvider(WindowRenderer* aRenderer, const gfx::IntSize& aSize, + const SVGImageContext& aSVGContext, + const Maybe<ImageIntRegion>& aRegion, uint32_t aFlags, + WebRenderImageProvider** aProvider) override; + NS_IMETHOD_(ImgDrawResult) + Draw(gfxContext* aContext, const nsIntSize& aSize, const ImageRegion& aRegion, + uint32_t aWhichFrame, gfx::SamplingFilter aSamplingFilter, + const SVGImageContext& aSVGContext, uint32_t aFlags, + float aOpacity) override; + NS_IMETHOD StartDecoding(uint32_t aFlags, uint32_t aWhichFrame) override; + NS_IMETHOD_(bool) + StartDecodingWithResult(uint32_t aFlags, uint32_t aWhichFrame) override; + NS_IMETHOD_(bool) + HasDecodedPixels() override; + NS_IMETHOD_(DecodeResult) + RequestDecodeWithResult(uint32_t aFlags, uint32_t aWhichFrame) override; + NS_IMETHOD RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags, + uint32_t aWhichFrame) override; + NS_IMETHOD_(void) RequestRefresh(const TimeStamp& aTime) override; + NS_IMETHOD GetAnimationMode(uint16_t* aAnimationMode) override; + NS_IMETHOD SetAnimationMode(uint16_t aAnimationMode) override; + NS_IMETHOD ResetAnimation() override; + NS_IMETHOD_(float) GetFrameIndex(uint32_t aWhichFrame) override; + + protected: + explicit FrozenImage(Image* aImage) : ImageWrapper(aImage) {} + virtual ~FrozenImage() {} + + private: + friend class ImageOps; +}; + +} // namespace image +} // namespace mozilla + +#endif // mozilla_image_FrozenImage_h |