2007-11-26 Peter Kasting <zerodpx@gmail.com>

2007-11-26  Peter Kasting  <zerodpx@gmail.com>

        Reviewed by Alp Toker.

        http://bugs.webkit.org/show_bug.cgi?id=15974
        GIF decoding should respect frames' specified disposal methods.

        * platform/image-decoders/ImageDecoder.h:
        (WebCore::RGBA32Buffer::):
        (WebCore::RGBA32Buffer::RGBA32Buffer):
        (WebCore::RGBA32Buffer::disposalMethod):
        (WebCore::RGBA32Buffer::setDisposalMethod):
        * platform/image-decoders/gif/GIFImageDecoder.cpp:
        (WebCore::GIFImageDecoder::frameBufferAtIndex):
        (WebCore::GIFImageDecoder::initFrameBuffer):
        (WebCore::GIFImageDecoder::prepEmptyFrameBuffer):
        (WebCore::GIFImageDecoder::haveDecodedRow):
        (WebCore::GIFImageDecoder::frameComplete):
        * platform/image-decoders/gif/GIFImageDecoder.h:
        * platform/image-decoders/gif/GIFImageReader.cpp:
        (GIFImageReader::read):
        * platform/image-decoders/gif/GIFImageReader.h:
        (GIFFrameReader::GIFFrameReader):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@28068 268f45cc-cd09-0410-ab3c-d52691b4dbfc