From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- image/FrozenImage.h | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 image/FrozenImage.h (limited to 'image/FrozenImage.h') diff --git a/image/FrozenImage.h b/image/FrozenImage.h new file mode 100644 index 000000000..24b57304e --- /dev/null +++ b/image/FrozenImage.h @@ -0,0 +1,73 @@ +/* -*- 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_DECL_ISUPPORTS_INHERITED + + virtual void IncrementAnimationConsumers() override; + virtual void DecrementAnimationConsumers() override; + + NS_IMETHOD GetAnimated(bool* aAnimated) override; + NS_IMETHOD_(already_AddRefed) + GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override; + NS_IMETHOD_(already_AddRefed) + GetFrameAtSize(const gfx::IntSize& aSize, + uint32_t aWhichFrame, + uint32_t aFlags) override; + NS_IMETHOD_(bool) IsImageContainerAvailable(layers::LayerManager* aManager, + uint32_t aFlags) override; + NS_IMETHOD_(already_AddRefed) + GetImageContainer(layers::LayerManager* aManager, + uint32_t aFlags) override; + NS_IMETHOD_(DrawResult) Draw(gfxContext* aContext, + const nsIntSize& aSize, + const ImageRegion& aRegion, + uint32_t aWhichFrame, + gfx::SamplingFilter aSamplingFilter, + const Maybe& aSVGContext, + uint32_t aFlags) 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 -- cgit v1.2.3