58 lines
2.3 KiB
C++
58 lines
2.3 KiB
C++
/*
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* Copyright (C) 2004, 2005, 2006 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ImageTypes.h"
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#include <wtf/URL.h>
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namespace WebCore {
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class Image;
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class IntRect;
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// Interface for notification about changes to an image, including decoding,
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// drawing, and animating.
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class ImageObserver {
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protected:
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virtual ~ImageObserver() = default;
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public:
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virtual URL sourceUrl() const = 0;
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virtual String mimeType() const = 0;
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virtual long long expectedContentLength() const = 0;
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virtual void encodedDataStatusChanged(const Image&, EncodedDataStatus) { };
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virtual void decodedSizeChanged(const Image&, long long delta) = 0;
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virtual void didDraw(const Image&) = 0;
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virtual bool canDestroyDecodedData(const Image&) = 0;
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virtual void imageFrameAvailable(const Image&, ImageAnimatingState, const IntRect* changeRect = nullptr, DecodingStatus = DecodingStatus::Invalid) = 0;
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virtual void changedInRect(const Image&, const IntRect* changeRect = nullptr) = 0;
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virtual void scheduleRenderingUpdate(const Image&) = 0;
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};
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}
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