1 /*

     2  * Copyright (C) 2010 Apple Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     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.

    12  *

    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.

    24  */

    25 

    26 #include "ChunkedUpdateDrawingArea.h"

    27 

    28 #include "UpdateChunk.h"

    29 #include "WebPage.h"

    30 #include <WebCore/BitmapInfo.h>

    31 #include <WebCore/GraphicsContext.h>

    32 

    33 using namespace WebCore;

    34 

    35 namespace WebKit {

    36 

    37 void ChunkedUpdateDrawingArea::paintIntoUpdateChunk(UpdateChunk* updateChunk)

    38 {

    39     OwnPtr<HDC> hdc(::CreateCompatibleDC(0));

    40 

    41     void* bits;

    42     BitmapInfo bmp = BitmapInfo::createBottomUp(updateChunk->rect().size());

    43     OwnPtr<HBITMAP> hbmp(::CreateDIBSection(0, &bmp, DIB_RGB_COLORS, &bits, updateChunk->memory(), 0));

    44 

    45     HBITMAP hbmpOld = static_cast<HBITMAP>(::SelectObject(hdc.get(), hbmp.get()));

    46 

    47     GraphicsContext gc(hdc.get());

    48     gc.save();

    49 

    50     // FIXME: Is this white fill needed?

    51     RECT rect = updateChunk->rect();

    52     ::FillRect(hdc.get(), &rect, (HBRUSH)::GetStockObject(WHITE_BRUSH));

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

    54 

    55     m_webPage->drawRect(gc, updateChunk->rect());

    56 

    57     gc.restore();

    58 

    59     // Re-select the old HBITMAP

    60     ::SelectObject(hdc.get(), hbmpOld);

    61 }

    62 

    63 } // namespace WebKit