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| 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 COMPUTER, 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 COMPUTER, 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 #include "config.h" | |
| 27 #include "core/platform/graphics/SegmentedFontData.h" | |
| 28 | |
| 29 #include "core/platform/graphics/SimpleFontData.h" | |
| 30 #include "wtf/Assertions.h" | |
| 31 #include "wtf/text/WTFString.h" | |
| 32 | |
| 33 namespace WebCore { | |
| 34 | |
| 35 SegmentedFontData::~SegmentedFontData() | |
| 36 { | |
| 37 GlyphPageTreeNode::pruneTreeCustomFontData(this); | |
| 38 } | |
| 39 | |
| 40 const SimpleFontData* SegmentedFontData::fontDataForCharacter(UChar32 c) const | |
| 41 { | |
| 42 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
| 43 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
| 44 if (it->from() <= c && it->to() >= c) | |
| 45 return it->fontData().get(); | |
| 46 } | |
| 47 return m_ranges[0].fontData().get(); | |
| 48 } | |
| 49 | |
| 50 bool SegmentedFontData::containsCharacter(UChar32 c) const | |
| 51 { | |
| 52 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
| 53 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
| 54 if (c >= it->from() && c <= it->to()) | |
| 55 return true; | |
| 56 } | |
| 57 return false; | |
| 58 } | |
| 59 | |
| 60 bool SegmentedFontData::containsCharacters(const UChar* characters, int length)
const | |
| 61 { | |
| 62 UChar32 c; | |
| 63 for (int i = 0; i < length; ) { | |
| 64 U16_NEXT(characters, i, length, c) | |
| 65 if (!containsCharacter(c)) | |
| 66 return false; | |
| 67 } | |
| 68 return true; | |
| 69 } | |
| 70 | |
| 71 bool SegmentedFontData::isCustomFont() const | |
| 72 { | |
| 73 // All segmented fonts are custom fonts. | |
| 74 return true; | |
| 75 } | |
| 76 | |
| 77 bool SegmentedFontData::isLoading() const | |
| 78 { | |
| 79 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
| 80 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
| 81 if (it->fontData()->isLoading()) | |
| 82 return true; | |
| 83 } | |
| 84 return false; | |
| 85 } | |
| 86 | |
| 87 // Returns true only if all of the sub fonts are loadingFallback. | |
| 88 bool SegmentedFontData::isLoadingFallback() const | |
| 89 { | |
| 90 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
| 91 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
| 92 if (!it->fontData()->isLoadingFallback()) | |
| 93 return false; | |
| 94 } | |
| 95 return true; | |
| 96 } | |
| 97 | |
| 98 bool SegmentedFontData::isSegmented() const | |
| 99 { | |
| 100 return true; | |
| 101 } | |
| 102 | |
| 103 #ifndef NDEBUG | |
| 104 String SegmentedFontData::description() const | |
| 105 { | |
| 106 return "[segmented font]"; | |
| 107 } | |
| 108 #endif | |
| 109 | |
| 110 } // namespace WebCore | |
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