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 blink {
34
~SegmentedFontData()35 SegmentedFontData::~SegmentedFontData()
36 {
37 GlyphPageTreeNode::pruneTreeCustomFontData(this);
38 }
39
fontDataForCharacter(UChar32 c) const40 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
containsCharacter(UChar32 c) const50 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
isCustomFont() const60 bool SegmentedFontData::isCustomFont() const
61 {
62 // All segmented fonts are custom fonts.
63 return true;
64 }
65
isLoading() const66 bool 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.
isLoadingFallback() const77 bool 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
isSegmented() const87 bool SegmentedFontData::isSegmented() const
88 {
89 return true;
90 }
91
shouldSkipDrawing() const92 bool 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