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@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#ifndef BitmapInfo_h
30#define BitmapInfo_h
31
32#include "IntSize.h"
33#include <windows.h>
34
35namespace WebCore {
36
37struct BitmapInfo : public BITMAPINFO {
38    enum BitCount {
39        BitCount1 = 1,
40        BitCount4 = 4,
41        BitCount8 = 8,
42        BitCount16 = 16,
43        BitCount24 = 24,
44        BitCount32 = 32
45    };
46
47    BitmapInfo();
48    static BitmapInfo create(const IntSize&, BitCount bitCount = BitCount32);
49    static BitmapInfo createBottomUp(const IntSize&, BitCount bitCount = BitCount32);
50
51    bool is16bit() const { return bmiHeader.biBitCount == 16; }
52    bool is32bit() const { return bmiHeader.biBitCount == 32; }
53    unsigned width() const { return abs(bmiHeader.biWidth); }
54    unsigned height() const { return abs(bmiHeader.biHeight); }
55    IntSize size() const { return IntSize(width(), height()); }
56    unsigned bytesPerLine() const { return (width() * bmiHeader.biBitCount + 7) / 8; }
57    unsigned paddedBytesPerLine() const { return (bytesPerLine() + 3) & ~0x3; }
58    unsigned paddedWidth() const { return paddedBytesPerLine() * 8 / bmiHeader.biBitCount; }
59    unsigned numPixels() const { return paddedWidth() * height(); }
60};
61
62} // namespace WebCore
63
64#endif // BitmapInfo_h
65