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Side by Side Diff: webkit/api/src/gtk/WebFontInfo.cpp

Issue 132007: Linux: plumb fontconfig call out to the sandbox host. (Closed)
Patch Set: ... Created 11 years, 5 months ago
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1 /*
2 * Copyright (C) 2009 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "WebFontInfo.h"
33
34 #include <string.h>
35
36 #include <unicode/utf16.h>
37 #include <fontconfig/fontconfig.h>
38
39 namespace WebKit {
40
41 WebString WebFontInfo::familyForChars(const WebUChar* characters, size_t numCharacters)
42 {
43 FcCharSet* cset = FcCharSetCreate();
44 for (int i = 0; i < numCharacters; ++i) {
45 if (U16_IS_SURROGATE(characters[i])
46 && U16_IS_SURROGATE_LEAD(characters[i])
47 && i != numCharacters - 1
48 && U16_IS_TRAIL(characters[i + 1])) {
49 FcCharSetAddChar(cset, U16_GET_SUPPLEMENTARY(characters[i], characters[i+1]));
50 i++;
51 } else
52 FcCharSetAddChar(cset, characters[i]);
53 }
54 FcPattern* pattern = FcPatternCreate();
55
56 FcValue fcvalue;
57 fcvalue.type = FcTypeCharSet;
58 fcvalue.u.c = cset;
59 FcPatternAdd(pattern, FC_CHARSET, fcvalue, 0);
60
61 FcConfigSubstitute(0, pattern, FcMatchPattern);
62 FcDefaultSubstitute(pattern);
63
64 FcResult result;
65 FcPattern* match = FcFontMatch(0, pattern, &result);
66 FcPatternDestroy(pattern);
67 FcCharSetDestroy(cset);
68
69 if (match) {
70 FcChar8* family;
71 WebString result;
72 if (FcPatternGetString(match, FC_FAMILY, 0, &family) == FcResultMatch) {
73 const char* charFamily = reinterpret_cast<char*>(family);
74 result = WebString::fromUTF8(charFamily, strlen(charFamily));
75 }
76 FcPatternDestroy(match);
77 return result;
78 }
79
80 return WebString();
81 }
82
83 } // namespace WebKit
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