/* * Copyright (C) 2004, 2005, 2006 Apple Inc. All rights reserved. * * 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 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 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 ImageObserver_h #define ImageObserver_h #include "ImageTypes.h" namespace WebCore { class Image; class IntRect; class URL; // Interface for notification about changes to an image, including decoding, // drawing, and animating. class ImageObserver { protected: virtual ~ImageObserver() {} public: virtual URL sourceUrl() const = 0; virtual void decodedSizeChanged(const Image&, long long delta) = 0; virtual void didDraw(const Image&) = 0; virtual bool canDestroyDecodedData(const Image&) = 0; virtual void imageFrameAvailable(const Image&, ImageAnimatingState, const IntRect* changeRect = nullptr, DecodingStatus = DecodingStatus::Invalid) = 0; virtual void changedInRect(const Image&, const IntRect* changeRect = nullptr) = 0; }; } #endif