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1 /* | 1 /* |
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All r
ight reserved. | 3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All r
ight reserved. |
4 * Copyright (C) 2010 Google Inc. All rights reserved. | 4 * Copyright (C) 2010 Google Inc. All rights reserved. |
5 * Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved. | 5 * Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved. |
6 * | 6 * |
7 * This library is free software; you can redistribute it and/or | 7 * This library is free software; you can redistribute it and/or |
8 * modify it under the terms of the GNU Library General Public | 8 * modify it under the terms of the GNU Library General Public |
9 * License as published by the Free Software Foundation; either | 9 * License as published by the Free Software Foundation; either |
10 * version 2 of the License, or (at your option) any later version. | 10 * version 2 of the License, or (at your option) any later version. |
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28 #include "platform/geometry/LayoutRect.h" | 28 #include "platform/geometry/LayoutRect.h" |
29 #include "wtf/Allocator.h" | 29 #include "wtf/Allocator.h" |
30 | 30 |
31 namespace blink { | 31 namespace blink { |
32 | 32 |
33 // Like LayoutState for layout(), LineLayoutState keeps track of global informat
ion | 33 // Like LayoutState for layout(), LineLayoutState keeps track of global informat
ion |
34 // during an entire linebox tree layout pass (aka layoutInlineChildren). | 34 // during an entire linebox tree layout pass (aka layoutInlineChildren). |
35 class LineLayoutState { | 35 class LineLayoutState { |
36 STACK_ALLOCATED(); | 36 STACK_ALLOCATED(); |
37 public: | 37 public: |
38 LineLayoutState(bool fullLayout, LayoutUnit& paintInvalidationLogicalTop, La
youtUnit& paintInvalidationLogicalBottom) | 38 LineLayoutState(bool fullLayout) |
39 : m_lastFloat(nullptr) | 39 : m_lastFloat(nullptr) |
40 , m_endLine(nullptr) | 40 , m_endLine(nullptr) |
41 , m_floatIndex(0) | 41 , m_floatIndex(0) |
42 , m_endLineMatched(false) | 42 , m_endLineMatched(false) |
43 , m_hasInlineChild(false) | 43 , m_hasInlineChild(false) |
44 , m_isFullLayout(fullLayout) | 44 , m_isFullLayout(fullLayout) |
45 , m_paintInvalidationLogicalTop(paintInvalidationLogicalTop) | |
46 , m_paintInvalidationLogicalBottom(paintInvalidationLogicalBottom) | |
47 , m_usesPaintInvalidationBounds(false) | |
48 { } | 45 { } |
49 | 46 |
50 void markForFullLayout() { m_isFullLayout = true; } | 47 void markForFullLayout() { m_isFullLayout = true; } |
51 bool isFullLayout() const { return m_isFullLayout; } | 48 bool isFullLayout() const { return m_isFullLayout; } |
52 | 49 |
53 bool usesPaintInvalidationBounds() const { return m_usesPaintInvalidationBou
nds; } | |
54 | |
55 void setPaintInvalidationRange(LayoutUnit logicalHeight) | |
56 { | |
57 m_usesPaintInvalidationBounds = true; | |
58 m_paintInvalidationLogicalTop = m_paintInvalidationLogicalBottom = logic
alHeight; | |
59 } | |
60 | |
61 void updatePaintInvalidationRangeFromBox(RootInlineBox* box, LayoutUnit pagi
nationDelta = LayoutUnit()) | |
62 { | |
63 m_usesPaintInvalidationBounds = true; | |
64 m_paintInvalidationLogicalTop = std::min(m_paintInvalidationLogicalTop,
box->logicalTopVisualOverflow() + paginationDelta.clampPositiveToZero()); | |
65 m_paintInvalidationLogicalBottom = std::max(m_paintInvalidationLogicalBo
ttom, box->logicalBottomVisualOverflow() + paginationDelta.clampNegativeToZero()
); | |
66 } | |
67 | |
68 bool endLineMatched() const { return m_endLineMatched; } | 50 bool endLineMatched() const { return m_endLineMatched; } |
69 void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatc
hed; } | 51 void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatc
hed; } |
70 | 52 |
71 bool hasInlineChild() const { return m_hasInlineChild; } | 53 bool hasInlineChild() const { return m_hasInlineChild; } |
72 void setHasInlineChild(bool hasInlineChild) { m_hasInlineChild = hasInlineCh
ild; } | 54 void setHasInlineChild(bool hasInlineChild) { m_hasInlineChild = hasInlineCh
ild; } |
73 | 55 |
74 | 56 |
75 LineInfo& lineInfo() { return m_lineInfo; } | 57 LineInfo& lineInfo() { return m_lineInfo; } |
76 const LineInfo& lineInfo() const { return m_lineInfo; } | 58 const LineInfo& lineInfo() const { return m_lineInfo; } |
77 | 59 |
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99 LineInfo m_lineInfo; | 81 LineInfo m_lineInfo; |
100 unsigned m_floatIndex; | 82 unsigned m_floatIndex; |
101 LayoutUnit m_endLineLogicalTop; | 83 LayoutUnit m_endLineLogicalTop; |
102 bool m_endLineMatched; | 84 bool m_endLineMatched; |
103 // Used as a performance optimization to avoid doing a full paint invalidati
on when our floats | 85 // Used as a performance optimization to avoid doing a full paint invalidati
on when our floats |
104 // change but we don't have any inline children. | 86 // change but we don't have any inline children. |
105 bool m_hasInlineChild; | 87 bool m_hasInlineChild; |
106 | 88 |
107 bool m_isFullLayout; | 89 bool m_isFullLayout; |
108 | 90 |
109 // FIXME: Should this be a range object instead of two ints? | |
110 LayoutUnit& m_paintInvalidationLogicalTop; | |
111 LayoutUnit& m_paintInvalidationLogicalBottom; | |
112 | |
113 LayoutUnit m_adjustedLogicalLineTop; | 91 LayoutUnit m_adjustedLogicalLineTop; |
114 | |
115 bool m_usesPaintInvalidationBounds; | |
116 }; | 92 }; |
117 | 93 |
118 } // namespace blink | 94 } // namespace blink |
119 | 95 |
120 #endif // LineLayoutState_h | 96 #endif // LineLayoutState_h |
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