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 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 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, PassRefPtr<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    PassRefPtr<SimpleFontData> fontData() const { return m_fontData; }
47
48private:
49    UChar32 m_from;
50    UChar32 m_to;
51    RefPtr<SimpleFontData> m_fontData;
52};
53
54class SegmentedFontData : public FontData {
55public:
56    static PassRefPtr<SegmentedFontData> create() { return adoptRef(new SegmentedFontData); }
57
58    virtual ~SegmentedFontData();
59
60    void appendRange(const FontDataRange& range) { m_ranges.append(range); }
61    unsigned numRanges() const { return m_ranges.size(); }
62    const FontDataRange& rangeAt(unsigned i) const { return m_ranges[i]; }
63
64#ifndef NDEBUG
65    virtual String description() const;
66#endif
67
68private:
69    SegmentedFontData() { }
70
71    virtual const SimpleFontData* fontDataForCharacter(UChar32) const;
72    virtual bool containsCharacters(const UChar*, int length) const;
73
74    virtual bool isCustomFont() const;
75    virtual bool isLoading() const;
76    virtual bool isSegmented() const;
77
78    bool containsCharacter(UChar32) const;
79
80    Vector<FontDataRange, 1> m_ranges;
81};
82
83} // namespace WebCore
84
85#endif // SegmentedFontData_h
86