Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/image-decoders/ImageFrame.cpp

-/*
- * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
- * Copyright (C) 2008, 2009 Google, 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.
- */
-
-#include "config.h"
-#include "core/platform/image-decoders/ImageDecoder.h"
-
-#include "core/platform/graphics/skia/NativeImageSkia.h"
-#include "wtf/PassRefPtr.h"
-
-namespace WebCore {
-
-ImageFrame::ImageFrame()
-    : m_bitmap(NativeImageSkia::create())
-    , m_allocator(0)
-    , m_hasAlpha(false)
-    , m_status(FrameEmpty)
-    , m_duration(0)
-    , m_disposalMethod(DisposeNotSpecified)
-    , m_alphaBlendSource(BlendAtopPreviousFrame)
-    , m_premultiplyAlpha(true)
-    , m_pixelsChanged(false)
-    , m_requiredPreviousFrameIndex(kNotFound)
-#if !ASSERT_DISABLED
-    , m_requiredPreviousFrameIndexValid(false)
-#endif
-{
-}
-
-ImageFrame& ImageFrame::operator=(const ImageFrame& other)
-{
-    if (this == &other)
-        return *this;
-
-    m_bitmap = other.m_bitmap->clone();
-    // Keep the pixels locked since we will be writing directly into the
-    // bitmap throughout this object's lifetime.
-    m_bitmap->bitmap().lockPixels();
-    // Be sure to assign this before calling setStatus(), since setStatus() may
-    // call notifyBitmapIfPixelsChanged().
-    m_pixelsChanged = other.m_pixelsChanged;
-    setMemoryAllocator(other.allocator());
-    setOriginalFrameRect(other.originalFrameRect());
-    setStatus(other.status());
-    setDuration(other.duration());
-    setDisposalMethod(other.disposalMethod());
-    setAlphaBlendSource(other.alphaBlendSource());
-    setPremultiplyAlpha(other.premultiplyAlpha());
-    // Be sure that this is called after we've called setStatus(), since we
-    // look at our status to know what to do with the alpha value.
-    setHasAlpha(other.hasAlpha());
-    // Copy raw fields to avoid ASSERT failure in requiredPreviousFrameIndex().
-    m_requiredPreviousFrameIndex = other.m_requiredPreviousFrameIndex;
-#if !ASSERT_DISABLED
-    m_requiredPreviousFrameIndexValid = other.m_requiredPreviousFrameIndexValid;
-#endif
-    return *this;
-}
-
-void ImageFrame::clearPixelData()
-{
-    m_bitmap->bitmap().reset();
-    m_status = FrameEmpty;
-    // NOTE: Do not reset other members here; clearFrameBufferCache()
-    // calls this to free the bitmap data, but other functions like
-    // initFrameBuffer() and frameComplete() may still need to read
-    // other metadata out of this frame later.
-}
-
-void ImageFrame::zeroFillPixelData()
-{
-    m_bitmap->bitmap().eraseARGB(0, 0, 0, 0);
-    m_hasAlpha = true;
-}
-
-bool ImageFrame::copyBitmapData(const ImageFrame& other)
-{
-    if (this == &other)
-        return true;
-
-    m_hasAlpha = other.m_hasAlpha;
-    m_bitmap->bitmap().reset();
-    const NativeImageSkia* otherBitmap = other.m_bitmap.get();
-    return otherBitmap->bitmap().copyTo(&m_bitmap->bitmap(), otherBitmap->bitmap().config());
-}
-
-bool ImageFrame::setSize(int newWidth, int newHeight)
-{
-    // setSize() should only be called once, it leaks memory otherwise.
-    ASSERT(!width() && !height());
-
-    m_bitmap->bitmap().setConfig(SkBitmap::kARGB_8888_Config, newWidth, newHeight);
-    if (!m_bitmap->bitmap().allocPixels(m_allocator, 0))
-        return false;
-
-    zeroFillPixelData();
-    return true;
-}
-
-PassRefPtr<NativeImageSkia> ImageFrame::asNewNativeImage() const
-{
-    return m_bitmap->clone();
-}
-
-bool ImageFrame::hasAlpha() const
-{
-    return m_hasAlpha;
-}
-
-void ImageFrame::setHasAlpha(bool alpha)
-{
-    m_hasAlpha = alpha;
-
-    // If the frame is not fully loaded, there will be transparent pixels,
-    // so we can't tell skia we're opaque, even for image types that logically
-    // always are (e.g. jpeg).
-    if (m_status != FrameComplete)
-        alpha = true;
-    m_bitmap->bitmap().setAlphaType(alpha ? kPremul_SkAlphaType : kOpaque_SkAlphaType);
-}
-
-void ImageFrame::setStatus(Status status)
-{
-    m_status = status;
-    if (m_status == FrameComplete) {
-        m_bitmap->bitmap().setAlphaType(m_hasAlpha ? kPremul_SkAlphaType : kOpaque_SkAlphaType);
-        // Send pending pixels changed notifications now, because we can't do this after
-        // the bitmap was set immutable by setDataComplete().
-        notifyBitmapIfPixelsChanged();
-        m_bitmap->setDataComplete(); // Tell the bitmap it's done.
-    }
-}
-
-void ImageFrame::zeroFillFrameRect(const IntRect& rect)
-{
-    if (rect.isEmpty())
-        return;
-
-    m_bitmap->bitmap().eraseArea(rect, SkColorSetARGB(0, 0, 0, 0));
-    setHasAlpha(true);
-}
-
-} // namespace WebCore