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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 <fontconfig/fontconfig.h> | |
| 35 #include <string.h> | |
| 36 #include <unicode/utf16.h> | |
| 37 | |
| 38 namespace WebKit { | |
| 39 | |
| 40 WebCString WebFontInfo::familyForChars(const WebUChar* characters, size_t numCharacters) | |
| 41 { | |
| 42 FcCharSet* cset = FcCharSetCreate(); | |
| 43 for (size_t i = 0; i < numCharacters; ++i) { | |
| 44 if (U16_IS_SURROGATE(characters[i]) | |
| 45 && U16_IS_SURROGATE_LEAD(characters[i]) | |
| 46 && i != numCharacters - 1 | |
| 47 && U16_IS_TRAIL(characters[i + 1])) { | |
| 48 FcCharSetAddChar(cset, U16_GET_SUPPLEMENTARY(characters[i], characters[i+1])); | |
| 49 i++; | |
| 50 } else | |
| 51 FcCharSetAddChar(cset, characters[i]); | |
| 52 } | |
| 53 FcPattern* pattern = FcPatternCreate(); | |
| 54 | |
| 55 FcValue fcvalue; | |
| 56 fcvalue.type = FcTypeCharSet; | |
| 57 fcvalue.u.c = cset; | |
| 58 FcPatternAdd(pattern, FC_CHARSET, fcvalue, 0); | |
| 59 | |
| 60 fcvalue.type = FcTypeBool; | |
| 61 fcvalue.u.b = FcTrue; | |
| 62 FcPatternAdd(pattern, FC_SCALABLE, fcvalue, 0); | |
| 63 | |
| 64 FcConfigSubstitute(0, pattern, FcMatchPattern); | |
| 65 FcDefaultSubstitute(pattern); | |
| 66 | |
| 67 FcResult result; | |
| 68 FcFontSet* fontSet = FcFontSort(0, pattern, 0, 0, &result); | |
| 69 FcPatternDestroy(pattern); | |
| 70 FcCharSetDestroy(cset); | |
| 71 | |
| 72 if (!fontSet) | |
| 73 return WebCString(); | |
| 74 | |
| 75 // Older versions of fontconfig have a bug where they cannot select | |
| 76 // only scalable fonts so we have to manually filter the results. | |
| 77 for (int i = 0; i < fontSet->nfont; ++i) { | |
| 78 FcPattern* current = fontSet->fonts[i]; | |
| 79 FcBool isScalable; | |
| 80 | |
| 81 if (FcPatternGetBool(current, FC_SCALABLE, 0, &isScalable) != FcResultMatch | |
| 82 || !isScalable) | |
| 83 continue; | |
| 84 | |
| 85 // fontconfig can also return fonts which are unreadable | |
| 86 FcChar8* cFilename; | |
| 87 if (FcPatternGetString(current, FC_FILE, 0, &cFilename) != FcResultMatch) | |
| 88 continue; | |
| 89 | |
| 90 if (access(reinterpret_cast<char*>(cFilename), R_OK)) | |
| 91 continue; | |
| 92 | |
| 93 FcChar8* family; | |
| 94 WebCString result; | |
| 95 if (FcPatternGetString(current, FC_FAMILY, 0, &family) == FcResultMatch) { | |
| 96 const char* charFamily = reinterpret_cast<char*>(family); | |
| 97 result = WebCString(charFamily, strlen(charFamily)); | |
| 98 } | |
| 99 FcFontSetDestroy(fontSet); | |
| 100 return result; | |
| 101 } | |
| 102 | |
| 103 FcFontSetDestroy(fontSet); | |
| 104 return WebCString(); | |
| 105 } | |
| 106 | |
| 107 } // namespace WebKit | |
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Chromium Code Reviews
Issue 385057:
Deleted webkit/api which now lives in webkit.org (Closed)
