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
|
/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#include "config.h"
#include "WebFontInfo.h"
#include <string.h>
#include <unicode/utf16.h>
#include <fontconfig/fontconfig.h>
namespace WebKit {
WebString WebFontInfo::familyForChars(const WebUChar* characters, size_t numCharacters)
{
FcCharSet* cset = FcCharSetCreate();
for (int i = 0; i < numCharacters; ++i) {
if (U16_IS_SURROGATE(characters[i])
&& U16_IS_SURROGATE_LEAD(characters[i])
&& i != numCharacters - 1
&& U16_IS_TRAIL(characters[i + 1])) {
FcCharSetAddChar(cset, U16_GET_SUPPLEMENTARY(characters[i], characters[i+1]));
i++;
} else
FcCharSetAddChar(cset, characters[i]);
}
FcPattern* pattern = FcPatternCreate();
FcValue fcvalue;
fcvalue.type = FcTypeCharSet;
fcvalue.u.c = cset;
FcPatternAdd(pattern, FC_CHARSET, fcvalue, 0);
fcvalue.type = FcTypeBool;
fcvalue.u.b = FcTrue;
FcPatternAdd(pattern, FC_SCALABLE, fcvalue, 0);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern* match = FcFontMatch(0, pattern, &result);
FcPatternDestroy(pattern);
FcCharSetDestroy(cset);
if (match) {
FcChar8* family;
WebString result;
if (FcPatternGetString(match, FC_FAMILY, 0, &family) == FcResultMatch) {
const char* charFamily = reinterpret_cast<char*>(family);
result = WebString::fromUTF8(charFamily, strlen(charFamily));
}
FcPatternDestroy(match);
return result;
}
return WebString();
}
} // namespace WebKit
|
