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/*
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2008-2009 Torch Mobile, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_BITMAP_IMAGE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_BITMAP_IMAGE_H_
#include <memory>
#include "base/memory/weak_ptr.h"
#include "base/optional.h"
#include "third_party/blink/public/mojom/webpreferences/web_preferences.mojom-blink.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/graphics/color.h"
#include "third_party/blink/renderer/platform/graphics/deferred_image_decoder.h"
#include "third_party/blink/renderer/platform/graphics/image.h"
#include "third_party/blink/renderer/platform/image-decoders/image_animation.h"
#include "third_party/blink/renderer/platform/timer.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/skia/include/core/SkRefCnt.h"
namespace blink {
class PLATFORM_EXPORT BitmapImage final : public Image {
friend class BitmapImageTest;
friend class CrossfadeGeneratedImage;
friend class GeneratedImage;
friend class GradientGeneratedImage;
friend class GraphicsContext;
public:
static scoped_refptr<BitmapImage> Create(ImageObserver* observer = nullptr,
bool is_multipart = false) {
return base::AdoptRef(new BitmapImage(observer, is_multipart));
}
~BitmapImage() override;
bool IsBitmapImage() const override { return true; }
bool CurrentFrameHasSingleSecurityOrigin() const override;
IntSize Size() const override;
IntSize PreferredDisplaySize() const override;
bool HasDefaultOrientation() const override;
bool GetHotSpot(IntPoint&) const override;
String FilenameExtension() const override;
SizeAvailability SetData(scoped_refptr<SharedBuffer> data,
bool all_data_received) override;
SizeAvailability DataChanged(bool all_data_received) override;
bool IsAllDataReceived() const { return all_data_received_; }
bool HasColorProfile() const;
void ResetAnimation() override;
bool MaybeAnimated() override;
void SetAnimationPolicy(mojom::blink::ImageAnimationPolicy) override;
mojom::blink::ImageAnimationPolicy AnimationPolicy() override {
return animation_policy_;
}
scoped_refptr<Image> ImageForDefaultFrame() override;
// TODO(khushalsagar): These names are bogus, we don't know what the current
// frame is.
bool CurrentFrameKnownToBeOpaque() override;
bool CurrentFrameIsComplete() override;
bool CurrentFrameIsLazyDecoded() override;
size_t FrameCount() override;
PaintImage PaintImageForCurrentFrame() override;
ImageOrientation CurrentFrameOrientation() const override;
IntSize CurrentFrameDensityCorrectedSize() const override;
PaintImage PaintImageForTesting();
void AdvanceAnimationForTesting() override {
NOTREACHED() << "Supported only with svgs";
}
void SetDecoderForTesting(std::unique_ptr<DeferredImageDecoder> decoder) {
decoder_ = std::move(decoder);
}
IntSize DensityCorrectedSize() const override;
protected:
bool IsSizeAvailable() override;
// TODO(khushalsagar): This is only used by MemoryCache to evict images based
// on whether they are caching decoded data. Since the decodes are already
// in unlocked discardable in cc/skia, this is unnecessary.
size_t TotalFrameBytes();
private:
enum RepetitionCountStatus : uint8_t {
kUnknown, // We haven't checked the source's repetition count.
kUncertain, // We have a repetition count, but it might be wrong (some GIFs
// have a count after the image data, and will report "loop
// once" until all data has been decoded).
kCertain // The repetition count is known to be correct.
};
BitmapImage(const SkBitmap&, ImageObserver* = nullptr);
BitmapImage(ImageObserver* = nullptr, bool is_multi_part = false);
void Draw(cc::PaintCanvas*,
const cc::PaintFlags&,
const FloatRect& dst_rect,
const FloatRect& src_rect,
RespectImageOrientationEnum,
ImageClampingMode,
ImageDecodingMode) override;
PaintImage CreatePaintImage();
void UpdateSize() const;
// Called to wipe out the entire frame buffer cache and tell the image
// source to destroy everything; this is used when e.g. we want to free
// some room in the image cache.
void DestroyDecodedData() override;
scoped_refptr<SharedBuffer> Data() override;
// Notifies observers that the memory footprint has changed.
void NotifyMemoryChanged();
int RepetitionCount();
// Whether we are ready to record UMAs related to the number of bytes in
// images.
bool ShouldReportByteSizeUMAs(bool data_now_completely_received);
std::unique_ptr<DeferredImageDecoder> decoder_;
mutable IntSize size_; // The size to use for the overall image (will just
// be the size of the first image).
mutable IntSize size_respecting_orientation_;
mutable IntSize density_corrected_size_;
mutable IntSize density_corrected_size_respecting_orientation_;
// This caches the PaintImage created with the last updated encoded data to
// ensure re-use of generated decodes. This is cleared each time the encoded
// data is updated in DataChanged.
PaintImage cached_frame_;
// Whether or not we can play animation.
mojom::blink::ImageAnimationPolicy animation_policy_ =
blink::mojom::ImageAnimationPolicy::kImageAnimationPolicyAllowed;
bool all_data_received_ : 1; // Whether we've received all our data.
mutable bool have_size_ : 1; // Whether our |m_size| member variable has the
// final overall image size yet.
bool size_available_ : 1; // Whether we can obtain the size of the first
// image frame from ImageIO yet.
bool have_frame_count_ : 1;
bool default_frame_has_alpha_ : 1;
RepetitionCountStatus repetition_count_status_;
int repetition_count_; // How many total animation loops we should do. This
// will be cAnimationNone if this image type is
// incapable of animation.
size_t frame_count_;
PaintImage::AnimationSequenceId reset_animation_sequence_id_ = 0;
};
template <>
struct DowncastTraits<BitmapImage> {
static bool AllowFrom(const Image& image) { return image.IsBitmapImage(); }
};
} // namespace blink
#endif
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