1 /*
2 * Copyright (C) 2013 Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "core/rendering/AbstractInlineTextBox.h"
33
34 #include "core/editing/TextIterator.h"
35 #include "platform/text/TextBreakIterator.h"
36
37 namespace WebCore {
38
39 AbstractInlineTextBox::InlineToAbstractInlineTextBoxHashMap* AbstractInlineTextBox::gAbstractInlineTextBoxMap = 0;
40
getOrCreate(RenderText * renderText,InlineTextBox * inlineTextBox)41 PassRefPtr<AbstractInlineTextBox> AbstractInlineTextBox::getOrCreate(RenderText* renderText, InlineTextBox* inlineTextBox)
42 {
43 if (!inlineTextBox)
44 return 0;
45
46 if (!gAbstractInlineTextBoxMap)
47 gAbstractInlineTextBoxMap = new InlineToAbstractInlineTextBoxHashMap();
48
49 InlineToAbstractInlineTextBoxHashMap::const_iterator it = gAbstractInlineTextBoxMap->find(inlineTextBox);
50 if (it != gAbstractInlineTextBoxMap->end())
51 return it->value;
52
53 RefPtr<AbstractInlineTextBox> obj = adoptRef(new AbstractInlineTextBox(renderText, inlineTextBox));
54 gAbstractInlineTextBoxMap->set(inlineTextBox, obj);
55 return obj;
56 }
57
willDestroy(InlineTextBox * inlineTextBox)58 void AbstractInlineTextBox::willDestroy(InlineTextBox* inlineTextBox)
59 {
60 if (!gAbstractInlineTextBoxMap)
61 return;
62
63 InlineToAbstractInlineTextBoxHashMap::const_iterator it = gAbstractInlineTextBoxMap->find(inlineTextBox);
64 if (it != gAbstractInlineTextBoxMap->end()) {
65 it->value->detach();
66 gAbstractInlineTextBoxMap->remove(inlineTextBox);
67 }
68 }
69
detach()70 void AbstractInlineTextBox::detach()
71 {
72 m_renderText = 0;
73 m_inlineTextBox = 0;
74 }
75
nextInlineTextBox() const76 PassRefPtr<AbstractInlineTextBox> AbstractInlineTextBox::nextInlineTextBox() const
77 {
78 if (!m_inlineTextBox)
79 return 0;
80
81 return getOrCreate(m_renderText, m_inlineTextBox->nextTextBox());
82 }
83
bounds() const84 LayoutRect AbstractInlineTextBox::bounds() const
85 {
86 if (!m_inlineTextBox || !m_renderText)
87 return LayoutRect();
88
89 FloatRect boundaries = m_inlineTextBox->calculateBoundaries();
90 return m_renderText->localToAbsoluteQuad(boundaries).enclosingBoundingBox();
91 }
92
start() const93 unsigned AbstractInlineTextBox::start() const
94 {
95 if (!m_inlineTextBox)
96 return 0;
97
98 return m_inlineTextBox->start();
99 }
100
len() const101 unsigned AbstractInlineTextBox::len() const
102 {
103 if (!m_inlineTextBox)
104 return 0;
105
106 return m_inlineTextBox->len();
107 }
108
direction() const109 AbstractInlineTextBox::Direction AbstractInlineTextBox::direction() const
110 {
111 if (!m_inlineTextBox || !m_renderText)
112 return LeftToRight;
113
114 if (m_renderText->style()->isHorizontalWritingMode())
115 return (m_inlineTextBox->direction() == RTL ? RightToLeft : LeftToRight);
116 return (m_inlineTextBox->direction() == RTL ? BottomToTop : TopToBottom);
117 }
118
characterWidths(Vector<float> & widths) const119 void AbstractInlineTextBox::characterWidths(Vector<float>& widths) const
120 {
121 if (!m_inlineTextBox)
122 return;
123
124 m_inlineTextBox->characterWidths(widths);
125 }
126
wordBoundaries(Vector<WordBoundaries> & words) const127 void AbstractInlineTextBox::wordBoundaries(Vector<WordBoundaries>& words) const
128 {
129 if (!m_inlineTextBox)
130 return;
131
132 String text = this->text();
133 int len = text.length();
134 TextBreakIterator* iterator = wordBreakIterator(text, 0, len);
135 int pos = iterator->first();
136 while (pos >= 0 && pos < len) {
137 int next = iterator->next();
138 if (isWordTextBreak(iterator))
139 words.append(WordBoundaries(pos, next));
140 pos = next;
141 }
142 }
143
text() const144 String AbstractInlineTextBox::text() const
145 {
146 if (!m_inlineTextBox || !m_renderText)
147 return String();
148
149 unsigned start = m_inlineTextBox->start();
150 unsigned len = m_inlineTextBox->len();
151 if (Node* node = m_renderText->node()) {
152 RefPtr<Range> range = Range::create(node->document());
153 range->setStart(node, start, IGNORE_EXCEPTION);
154 range->setEnd(node, start + len, IGNORE_EXCEPTION);
155 return plainText(range.get(), TextIteratorIgnoresStyleVisibility);
156 }
157
158 String result = m_renderText->text().substring(start, len).simplifyWhiteSpace(WTF::DoNotStripWhiteSpace);
159 if (m_inlineTextBox->nextTextBox() && m_inlineTextBox->nextTextBox()->start() > m_inlineTextBox->end() && result.length() && !result.right(1).containsOnlyWhitespace())
160 return result + " ";
161 return result;
162 }
163
164 } // namespace WebCore
165