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#pragma once
32
33#include "RenderBlockFlow.h"
34
35namespace WebCore {
36
37class RenderRubyBase;
38class RenderRubyText;
39
40// RenderRubyRuns are 'inline-block/table' like objects, and wrap a single pairing of a ruby base with its ruby text(s).
41// See RenderRuby.h for further comments on the structure
42
43class RenderRubyRun final : public RenderBlockFlow {
44 WTF_MAKE_ISO_ALLOCATED(RenderRubyRun);
45public:
46 RenderRubyRun(Document&, RenderStyle&&);
47 virtual ~RenderRubyRun();
48
49 bool hasRubyText() const;
50 bool hasRubyBase() const;
51 RenderRubyText* rubyText() const;
52 RenderRubyBase* rubyBase() const;
53
54 void layoutExcludedChildren(bool relayoutChildren) override;
55 void layout() override;
56 void layoutBlock(bool relayoutChildren, LayoutUnit pageHeight = 0_lu) override;
57
58 bool isChildAllowed(const RenderObject&, const RenderStyle&) const override;
59
60 RenderBlock* firstLineBlock() const override;
61
62 void getOverhang(bool firstLine, RenderObject* startRenderer, RenderObject* endRenderer, float& startOverhang, float& endOverhang) const;
63
64 static RenderPtr<RenderRubyRun> staticCreateRubyRun(const RenderObject* parentRuby);
65
66 void updatePriorContextFromCachedBreakIterator(LazyLineBreakIterator&) const;
67 void setCachedPriorCharacters(UChar last, UChar secondToLast)
68 {
69 m_lastCharacter = last;
70 m_secondToLastCharacter = secondToLast;
71 }
72 bool canBreakBefore(const LazyLineBreakIterator&) const;
73
74 RenderPtr<RenderRubyBase> createRubyBase() const;
75
76private:
77 bool isRubyRun() const override { return true; }
78 const char* renderName() const override { return "RenderRubyRun (anonymous)"; }
79 bool createsAnonymousWrapper() const override { return true; }
80
81private:
82 UChar m_lastCharacter;
83 UChar m_secondToLastCharacter;
84};
85
86} // namespace WebCore
87
88SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderRubyRun, isRubyRun())
89