1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (C) 2008-2023 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "Font.h"
#include <wtf/Vector.h>
namespace WebCore {
class FontAccessor;
enum class ExternalResourceDownloadPolicy : bool {
Forbid,
Allow
};
enum class IsGenericFontFamily : bool {
No,
Yes
};
class FontRanges {
public:
struct Range {
Range(char32_t from, char32_t to, Ref<FontAccessor>&& fontAccessor)
: m_from(from)
, m_to(to)
, m_fontAccessor(WTFMove(fontAccessor))
{
}
Range(const Range&) = default;
Range(Range&&) = default;
Range& operator=(const Range&) = delete;
Range& operator=(Range&&) = default;
char32_t from() const { return m_from; }
char32_t to() const { return m_to; }
WEBCORE_EXPORT const Font* font(ExternalResourceDownloadPolicy) const;
const FontAccessor& fontAccessor() const { return m_fontAccessor; }
private:
char32_t m_from;
char32_t m_to;
Ref<FontAccessor> m_fontAccessor;
};
FontRanges() = default;
explicit FontRanges(RefPtr<Font>&&);
~FontRanges();
FontRanges(const FontRanges&) = default;
FontRanges(FontRanges&& other, IsGenericFontFamily);
FontRanges& operator=(FontRanges&&) = default;
bool isNull() const { return m_ranges.isEmpty(); }
void appendRange(Range&& range) { m_ranges.append(WTFMove(range)); }
unsigned size() const { return m_ranges.size(); }
const Range& rangeAt(unsigned i) const { return m_ranges[i]; }
void shrinkToFit() { m_ranges.shrinkToFit(); }
WEBCORE_EXPORT GlyphData glyphDataForCharacter(char32_t, ExternalResourceDownloadPolicy) const;
WEBCORE_EXPORT const Font* fontForCharacter(char32_t) const;
WEBCORE_EXPORT const Font& fontForFirstRange() const;
bool isLoading() const;
bool isGenericFontFamily() const { return m_isGenericFontFamily == IsGenericFontFamily::Yes; }
private:
Vector<Range, 1> m_ranges;
IsGenericFontFamily m_isGenericFontFamily { IsGenericFontFamily::No };
};
}
|
