1/*
2 * Copyright (C) 2009 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
33#include "RenderRubyBase.h"
34#include "RenderRubyRun.h"
35#include "RenderRubyText.h"
36#include <wtf/IsoMallocInlines.h>
37
38namespace WebCore {
39
40WTF_MAKE_ISO_ALLOCATED_IMPL(RenderRubyBase);
41
42RenderRubyBase::RenderRubyBase(Document& document, RenderStyle&& style)
43 : RenderBlockFlow(document, WTFMove(style))
44 , m_initialOffset(0)
45 , m_isAfterExpansion(true)
46{
47 setInline(false);
48}
49
50RenderRubyBase::~RenderRubyBase() = default;
51
52bool RenderRubyBase::isChildAllowed(const RenderObject& child, const RenderStyle&) const
53{
54 return child.isInline();
55}
56
57RenderRubyRun* RenderRubyBase::rubyRun() const
58{
59 ASSERT(parent());
60 return downcast<RenderRubyRun>(parent());
61}
62
63TextAlignMode RenderRubyBase::textAlignmentForLine(bool /* endsWithSoftBreak */) const
64{
65 return TextAlignMode::Justify;
66}
67
68void RenderRubyBase::adjustInlineDirectionLineBounds(int expansionOpportunityCount, float& logicalLeft, float& logicalWidth) const
69{
70 if (rubyRun()->hasOverrideContentLogicalWidth() && firstRootBox() && !firstRootBox()->nextRootBox()) {
71 logicalLeft += m_initialOffset;
72 logicalWidth -= 2 * m_initialOffset;
73 return;
74 }
75
76 LayoutUnit maxPreferredLogicalWidth = rubyRun() && rubyRun()->hasOverrideContentLogicalWidth() ? rubyRun()->overrideContentLogicalWidth() : this->maxPreferredLogicalWidth();
77 if (maxPreferredLogicalWidth >= logicalWidth)
78 return;
79
80 // Inset the ruby base by half the inter-ideograph expansion amount.
81 float inset = (logicalWidth - maxPreferredLogicalWidth) / (expansionOpportunityCount + 1);
82
83 logicalLeft += inset / 2;
84 logicalWidth -= inset;
85}
86
87void RenderRubyBase::cachePriorCharactersIfNeeded(const LazyLineBreakIterator& lineBreakIterator)
88{
89 auto* run = rubyRun();
90 if (run)
91 run->setCachedPriorCharacters(lineBreakIterator.lastCharacter(), lineBreakIterator.secondToLastCharacter());
92}
93
94} // namespace WebCore
95