1/*
2 * Copyright (C) 2008, 2009 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 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 SegmentedFontData_h
27#define SegmentedFontData_h
28
29#include "FontData.h"
30#include <wtf/Vector.h>
31
32namespace WebCore {
33
34class SimpleFontData;
35
36struct FontDataRange {
37    FontDataRange(UChar32 from, UChar32 to, const SimpleFontData* fontData)
38        : m_from(from)
39        , m_to(to)
40        , m_fontData(fontData)
41    {
42    }
43
44    UChar32 from() const { return m_from; }
45    UChar32 to() const { return m_to; }
46    const SimpleFontData* fontData() const { return m_fontData; }
47
48private:
49    UChar32 m_from;
50    UChar32 m_to;
51    const SimpleFontData* m_fontData;
52};
53
54class SegmentedFontData : public FontData {
55public:
56    virtual ~SegmentedFontData();
57
58    void appendRange(const FontDataRange& range) { m_ranges.append(range); }
59    unsigned numRanges() const { return m_ranges.size(); }
60    const FontDataRange& rangeAt(unsigned i) const { return m_ranges[i]; }
61
62#ifndef NDEBUG
63    virtual String description() const;
64#endif
65
66private:
67    virtual const SimpleFontData* fontDataForCharacter(UChar32) const;
68    virtual bool containsCharacters(const UChar*, int length) const;
69
70    virtual bool isCustomFont() const;
71    virtual bool isLoading() const;
72    virtual bool isSegmented() const;
73
74    bool containsCharacter(UChar32) const;
75
76    Vector<FontDataRange, 1> m_ranges;
77};
78
79} // namespace WebCore
80
81#endif // SegmentedFontData_h
82