Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/ImageSource.cpp

-/*
- * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
- * Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
- * Copyright (C) 2008, Google 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 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.
- */
-
-#include "config.h"
-#include "core/platform/graphics/ImageSource.h"
-
-#include "core/platform/graphics/DeferredImageDecoder.h"
-#include "core/platform/image-decoders/ImageDecoder.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/PassRefPtr.h"
-
-namespace WebCore {
-
-ImageSource::ImageSource(ImageSource::AlphaOption alphaOption, ImageSource::GammaAndColorProfileOption gammaAndColorProfileOption)
-    : m_alphaOption(alphaOption)
-    , m_gammaAndColorProfileOption(gammaAndColorProfileOption)
-{
-}
-
-ImageSource::~ImageSource()
-{
-}
-
-size_t ImageSource::clearCacheExceptFrame(size_t clearExceptFrame)
-{
-    return m_decoder ? m_decoder->clearCacheExceptFrame(clearExceptFrame) : 0;
-}
-
-bool ImageSource::initialized() const
-{
-    return m_decoder;
-}
-
-void ImageSource::setData(SharedBuffer* data, bool allDataReceived)
-{
-    // Make the decoder by sniffing the bytes.
-    // This method will examine the data and instantiate an instance of the appropriate decoder plugin.
-    // If insufficient bytes are available to determine the image type, no decoder plugin will be
-    // made.
-    if (!m_decoder)
-        m_decoder = DeferredImageDecoder::create(*data, m_alphaOption, m_gammaAndColorProfileOption);
-
-    if (m_decoder)
-        m_decoder->setData(data, allDataReceived);
-}
-
-String ImageSource::filenameExtension() const
-{
-    return m_decoder ? m_decoder->filenameExtension() : String();
-}
-
-bool ImageSource::isSizeAvailable()
-{
-    return m_decoder && m_decoder->isSizeAvailable();
-}
-
-IntSize ImageSource::size(RespectImageOrientationEnum shouldRespectOrientation) const
-{
-    return frameSizeAtIndex(0, shouldRespectOrientation);
-}
-
-IntSize ImageSource::frameSizeAtIndex(size_t index, RespectImageOrientationEnum shouldRespectOrientation) const
-{
-    if (!m_decoder)
-        return IntSize();
-
-    IntSize size = m_decoder->frameSizeAtIndex(index);
-    if ((shouldRespectOrientation == RespectImageOrientation) && m_decoder->orientation().usesWidthAsHeight())
-        return IntSize(size.height(), size.width());
-
-    return size;
-}
-
-bool ImageSource::getHotSpot(IntPoint& hotSpot) const
-{
-    return m_decoder ? m_decoder->hotSpot(hotSpot) : false;
-}
-
-int ImageSource::repetitionCount()
-{
-    return m_decoder ? m_decoder->repetitionCount() : cAnimationNone;
-}
-
-size_t ImageSource::frameCount() const
-{
-    return m_decoder ? m_decoder->frameCount() : 0;
-}
-
-PassRefPtr<NativeImageSkia> ImageSource::createFrameAtIndex(size_t index)
-{
-    if (!m_decoder)
-        return 0;
-
-    ImageFrame* buffer = m_decoder->frameBufferAtIndex(index);
-    if (!buffer || buffer->status() == ImageFrame::FrameEmpty)
-        return 0;
-
-    // Zero-height images can cause problems for some ports.  If we have an
-    // empty image dimension, just bail.
-    if (size().isEmpty())
-        return 0;
-
-    // Return the buffer contents as a native image.  For some ports, the data
-    // is already in a native container, and this just increments its refcount.
-    return buffer->asNewNativeImage();
-}
-
-float ImageSource::frameDurationAtIndex(size_t index) const
-{
-    if (!m_decoder)
-        return 0;
-
-    // Many annoying ads specify a 0 duration to make an image flash as quickly as possible.
-    // We follow Firefox's behavior and use a duration of 100 ms for any frames that specify
-    // a duration of <= 10 ms. See <rdar://problem/7689300> and <http://webkit.org/b/36082>
-    // for more information.
-    const float duration = m_decoder->frameDurationAtIndex(index) / 1000.0f;
-    if (duration < 0.011f)
-        return 0.100f;
-    return duration;
-}
-
-ImageOrientation ImageSource::orientationAtIndex(size_t) const
-{
-    return m_decoder ? m_decoder->orientation() : DefaultImageOrientation;
-}
-
-bool ImageSource::frameHasAlphaAtIndex(size_t index) const
-{
-    return !m_decoder || m_decoder->frameHasAlphaAtIndex(index);
-}
-
-bool ImageSource::frameIsCompleteAtIndex(size_t index) const
-{
-    return m_decoder && m_decoder->frameIsCompleteAtIndex(index);
-}
-
-unsigned ImageSource::frameBytesAtIndex(size_t index) const
-{
-    if (!m_decoder)
-        return 0;
-    return m_decoder->frameBytesAtIndex(index);
-}
-
-}