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 "platform/fonts/SegmentedFontData.h" 28 29 #include "platform/fonts/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 111
