2 * Copyright (C) 2011 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
27 #include "ShareableBitmap.h"
29 #include <WebCore/BitmapInfo.h>
30 #include <WebCore/GraphicsContext.h>
32 using namespace WebCore;
36 HDC ShareableBitmap::windowsContext() const
38 ASSERT(isBackedBySharedMemory());
40 return m_windowsContext.get();
42 OwnPtr<HDC> screenDC = adoptPtr(::GetDC(0));
43 BitmapInfo bmInfo = BitmapInfo::createBottomUp(m_size);
45 m_windowsContext = adoptPtr(::CreateCompatibleDC(screenDC.get()));
46 m_windowsBitmap = adoptPtr(CreateDIBSection(m_windowsContext.get(), &bmInfo, DIB_RGB_COLORS, 0, m_sharedMemory->handle(), 0));
47 ::SelectObject(m_windowsContext.get(), m_windowsBitmap.get());
49 return m_windowsContext.get();