1/*
2 * Copyright (C) 2012 Google 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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ScaledImageFragment_h
27#define ScaledImageFragment_h
28
29#include "SkBitmap.h"
30#include "SkRect.h"
31#include "SkSize.h"
32
33#include "platform/PlatformExport.h"
34#include "wtf/PassOwnPtr.h"
35
36namespace WebCore {
37
38// ScaledImageFragment is a scaled version of an image.
39class PLATFORM_EXPORT ScaledImageFragment {
40public:
41    enum ImageGeneration {
42        CompleteImage = 0,
43        FirstPartialImage = 1,
44    };
45
46    static PassOwnPtr<ScaledImageFragment> createComplete(const SkISize& scaledSize, size_t index, const SkBitmap& bitmap)
47    {
48        return adoptPtr(new ScaledImageFragment(scaledSize, index, CompleteImage, bitmap));
49    }
50
51    static PassOwnPtr<ScaledImageFragment> createPartial(const SkISize& scaledSize, size_t index, size_t generation, const SkBitmap& bitmap)
52    {
53        return adoptPtr(new ScaledImageFragment(scaledSize, index, generation, bitmap));
54    }
55
56    ScaledImageFragment(const SkISize&, size_t index, size_t generation, const SkBitmap&);
57    ~ScaledImageFragment();
58
59    const SkISize& scaledSize() const { return m_scaledSize; }
60    size_t index() const { return m_index; }
61    size_t generation() const { return m_generation; }
62    bool isComplete() const { return m_generation == CompleteImage; }
63    const SkBitmap& bitmap() const { return m_bitmap; }
64    SkBitmap& bitmap() { return m_bitmap; }
65
66private:
67    SkISize m_scaledSize;
68    size_t m_index;
69    size_t m_generation;
70    SkBitmap m_bitmap;
71};
72
73} // namespace WebCore
74
75#endif
76