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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All Rights Reserved.
      3  * Copyright (C) 2009 Brent Fulgham
      4  * Copyright (C) 2007-2009 Torch Mobile, Inc. All Rights Reserved.
      5  * Copyright (C) 2010 Patrick Gansterer <paroga (at) paroga.com>
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     24  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "BitmapInfo.h"
     31 
     32 #include <wtf/Assertions.h>
     33 
     34 namespace WebCore {
     35 
     36 BitmapInfo bitmapInfoForSize(int width, int height, BitmapInfo::BitCount bitCount)
     37 {
     38     BitmapInfo bitmapInfo;
     39     bitmapInfo.bmiHeader.biWidth         = width;
     40     bitmapInfo.bmiHeader.biHeight        = height;
     41     bitmapInfo.bmiHeader.biPlanes        = 1;
     42     bitmapInfo.bmiHeader.biBitCount      = bitCount;
     43     bitmapInfo.bmiHeader.biCompression   = BI_RGB;
     44 
     45     return bitmapInfo;
     46 }
     47 
     48 BitmapInfo::BitmapInfo()
     49 {
     50     memset(&bmiHeader, 0, sizeof(bmiHeader));
     51     bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
     52 }
     53 
     54 BitmapInfo BitmapInfo::create(const IntSize& size, BitCount bitCount)
     55 {
     56     return bitmapInfoForSize(size.width(), size.height(), bitCount);
     57 }
     58 
     59 BitmapInfo BitmapInfo::createBottomUp(const IntSize& size, BitCount bitCount)
     60 {
     61     return bitmapInfoForSize(size.width(), -size.height(), bitCount);
     62 }
     63 
     64 } // namespace WebCore
     65