1/*
2 * Copyright (C) 2013 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 INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "LayoutRect.h"
29#include "RenderObject.h"
30#include "VisiblePosition.h"
31
32namespace WebCore {
33
34class InlineTextBox;
35class RenderStyle;
36class RenderText;
37
38class RenderTextLineBoxes {
39public:
40 RenderTextLineBoxes();
41
42 InlineTextBox* first() const { return m_first; }
43 InlineTextBox* last() const { return m_last; }
44
45 InlineTextBox* createAndAppendLineBox(RenderText&);
46
47 void extract(InlineTextBox&);
48 void attach(InlineTextBox&);
49 void remove(InlineTextBox&);
50
51 void removeAllFromParent(RenderText&);
52 void deleteAll();
53
54 void dirtyAll();
55 bool dirtyRange(RenderText&, unsigned start, unsigned end, int lengthDelta);
56
57 InlineTextBox* findNext(int offset, int& position) const;
58
59 bool hasRenderedText() const;
60 int caretMinOffset() const;
61 int caretMaxOffset(const RenderText&) const;
62 enum OffsetType { CaretOffset, CharacterOffset };
63 bool containsOffset(const RenderText&, unsigned, OffsetType) const;
64 unsigned countCharacterOffsetsUntil(unsigned) const;
65
66 VisiblePosition positionForPoint(const RenderText&, const LayoutPoint&) const;
67
68 void setSelectionState(RenderText&, RenderObject::SelectionState);
69 LayoutRect selectionRectForRange(unsigned start, unsigned end);
70 void collectSelectionRectsForRange(unsigned start, unsigned end, Vector<LayoutRect>& rects);
71
72 IntRect boundingBox(const RenderText&) const;
73 IntPoint firstRunLocation() const;
74 LayoutRect visualOverflowBoundingBox(const RenderText&) const;
75
76 Vector<IntRect> absoluteRects(const LayoutPoint& accumulatedOffset) const;
77 Vector<IntRect> absoluteRectsForRange(const RenderText&, unsigned start, unsigned end, bool useSelectionHeight, bool* wasFixed) const;
78 enum ClippingOption { NoClipping, ClipToEllipsis };
79 Vector<FloatQuad> absoluteQuads(const RenderText&, bool* wasFixed, ClippingOption) const;
80 Vector<FloatQuad> absoluteQuadsForRange(const RenderText&, unsigned start, unsigned end, bool useSelectionHeight, bool* wasFixed) const;
81
82#if !ASSERT_DISABLED
83 ~RenderTextLineBoxes();
84#endif
85
86#if !ASSERT_WITH_SECURITY_IMPLICATION_DISABLED
87 void invalidateParentChildLists();
88#endif
89
90private:
91 void checkConsistency() const;
92
93 InlineTextBox* m_first;
94 InlineTextBox* m_last;
95};
96
97} // namespace WebCore
98