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
33namespace blink {
34
35SegmentedFontData::~SegmentedFontData()
36{
37    GlyphPageTreeNode::pruneTreeCustomFontData(this);
38}
39
40const 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
50bool 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
60bool SegmentedFontData::isCustomFont() const
61{
62    // All segmented fonts are custom fonts.
63    return true;
64}
65
66bool SegmentedFontData::isLoading() const
67{
68    Vector<FontDataRange>::const_iterator end = m_ranges.end();
69    for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end; ++it) {
70        if (it->fontData()->isLoading())
71            return true;
72    }
73    return false;
74}
75
76// Returns true if any of the sub fonts are loadingFallback.
77bool SegmentedFontData::isLoadingFallback() 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()->isLoadingFallback())
82            return true;
83    }
84    return false;
85}
86
87bool SegmentedFontData::isSegmented() const
88{
89    return true;
90}
91
92bool SegmentedFontData::shouldSkipDrawing() const
93{
94    Vector<FontDataRange>::const_iterator end = m_ranges.end();
95    for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end; ++it) {
96        if (it->fontData()->shouldSkipDrawing())
97            return true;
98    }
99    return false;
100}
101
102} // namespace blink
103