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