/*

 * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``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 ITS 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 "ChunkedUpdateDrawingArea.h"

#include "UpdateChunk.h"

#include "WebPage.h"

#include <WebCore/GraphicsContext.h>

#include <wtf/RetainPtr.h>

using namespace WebCore;

namespace WebKit {

void ChunkedUpdateDrawingArea::paintIntoUpdateChunk(UpdateChunk* updateChunk)

{

    RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());

    RetainPtr<CGContextRef> bitmapContext(AdoptCF, CGBitmapContextCreate(updateChunk->data(), updateChunk->rect().width(), updateChunk->rect().height(), 8, updateChunk->rect().width() * 4, colorSpace.get(), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));

    // WebCore expects a flipped coordinate system.

    CGContextTranslateCTM(bitmapContext.get(), 0.0, updateChunk->rect().height());

    CGContextScaleCTM(bitmapContext.get(), 1.0, -1.0);

    // Now paint into the backing store.

    GraphicsContext graphicsContext(bitmapContext.get());

    graphicsContext.translate(-updateChunk->rect().x(), -updateChunk->rect().y());

    m_webPage->drawRect(graphicsContext, updateChunk->rect());

}

} // namespace WebKit