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1 /* | 1 /* |
2 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved. | 2 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above | 8 * 1. Redistributions of source code must retain the above |
9 * copyright notice, this list of conditions and the following | 9 * copyright notice, this list of conditions and the following |
10 * disclaimer. | 10 * disclaimer. |
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33 #include "platform/LayoutUnit.h" | 33 #include "platform/LayoutUnit.h" |
34 | 34 |
35 namespace WebCore { | 35 namespace WebCore { |
36 | 36 |
37 class FloatingObject; | 37 class FloatingObject; |
38 class RenderObject; | 38 class RenderObject; |
39 class RenderRubyRun; | 39 class RenderRubyRun; |
40 class RenderBlockFlow; | 40 class RenderBlockFlow; |
41 | 41 |
42 enum IndentTextOrNot { DoNotIndentText, IndentText }; | 42 enum IndentTextOrNot { DoNotIndentText, IndentText }; |
| 43 enum WhitespaceTreatment { ExcludeWhitespace, IncludeWhitespace }; |
43 | 44 |
44 class LineWidth { | 45 class LineWidth { |
45 public: | 46 public: |
46 LineWidth(RenderBlockFlow&, bool isFirstLine, IndentTextOrNot shouldIndentTe
xt); | 47 LineWidth(RenderBlockFlow&, bool isFirstLine, IndentTextOrNot shouldIndentTe
xt); |
47 | 48 |
48 bool fitsOnLine() const { return currentWidth() <= (m_availableWidth + Layou
tUnit::epsilon()); } | 49 bool fitsOnLine() const { return currentWidth() <= (m_availableWidth + Layou
tUnit::epsilon()); } |
49 bool fitsOnLine(float extra) const { return currentWidth() + extra <= (m_ava
ilableWidth + LayoutUnit::epsilon()); } | 50 bool fitsOnLine(float extra) const { return currentWidth() + extra <= (m_ava
ilableWidth + LayoutUnit::epsilon()); } |
| 51 bool fitsOnLine(float extra, WhitespaceTreatment whitespaceTreatment) const |
| 52 { |
| 53 return currentWidth() - (whitespaceTreatment == ExcludeWhitespace ? trai
lingWhitespaceWidth() : 0) + extra <= (m_availableWidth + LayoutUnit::epsilon())
; |
| 54 } |
50 | 55 |
51 float currentWidth() const { return m_committedWidth + m_uncommittedWidth; } | 56 float currentWidth() const { return m_committedWidth + m_uncommittedWidth; } |
52 // FIXME: We should eventually replace these three functions by ones that wo
rk on a higher abstraction. | 57 // FIXME: We should eventually replace these three functions by ones that wo
rk on a higher abstraction. |
53 float uncommittedWidth() const { return m_uncommittedWidth; } | 58 float uncommittedWidth() const { return m_uncommittedWidth; } |
54 float committedWidth() const { return m_committedWidth; } | 59 float committedWidth() const { return m_committedWidth; } |
55 float availableWidth() const { return m_availableWidth; } | 60 float availableWidth() const { return m_availableWidth; } |
| 61 float trailingWhitespaceWidth() const { return m_trailingWhitespaceWidth; } |
56 | 62 |
57 void updateAvailableWidth(LayoutUnit minimumHeight = 0); | 63 void updateAvailableWidth(LayoutUnit minimumHeight = 0); |
58 void shrinkAvailableWidthForNewFloatIfNeeded(FloatingObject*); | 64 void shrinkAvailableWidthForNewFloatIfNeeded(FloatingObject*); |
59 void addUncommittedWidth(float delta) { m_uncommittedWidth += delta; } | 65 void addUncommittedWidth(float delta) { m_uncommittedWidth += delta; } |
60 void commit(); | 66 void commit(); |
61 void applyOverhang(RenderRubyRun*, RenderObject* startRenderer, RenderObject
* endRenderer); | 67 void applyOverhang(RenderRubyRun*, RenderObject* startRenderer, RenderObject
* endRenderer); |
62 void fitBelowFloats(bool isFirstLine = false); | 68 void fitBelowFloats(bool isFirstLine = false); |
| 69 void setTrailingWhitespaceWidth(float width) { m_trailingWhitespaceWidth = w
idth; } |
63 | 70 |
64 bool shouldIndentText() const { return m_shouldIndentText == IndentText; } | 71 bool shouldIndentText() const { return m_shouldIndentText == IndentText; } |
65 | 72 |
66 private: | 73 private: |
67 void computeAvailableWidthFromLeftAndRight(); | 74 void computeAvailableWidthFromLeftAndRight(); |
68 void updateLineDimension(LayoutUnit newLineTop, LayoutUnit newLineWidth, con
st float& newLineLeft, const float& newLineRight); | 75 void updateLineDimension(LayoutUnit newLineTop, LayoutUnit newLineWidth, con
st float& newLineLeft, const float& newLineRight); |
69 void wrapNextToShapeOutside(bool isFirstLine); | 76 void wrapNextToShapeOutside(bool isFirstLine); |
70 | 77 |
71 RenderBlockFlow& m_block; | 78 RenderBlockFlow& m_block; |
72 float m_uncommittedWidth; | 79 float m_uncommittedWidth; |
73 float m_committedWidth; | 80 float m_committedWidth; |
74 float m_overhangWidth; // The amount by which |m_availableWidth| has been in
flated to account for possible contraction due to ruby overhang. | 81 float m_overhangWidth; // The amount by which |m_availableWidth| has been in
flated to account for possible contraction due to ruby overhang. |
| 82 float m_trailingWhitespaceWidth; |
75 float m_left; | 83 float m_left; |
76 float m_right; | 84 float m_right; |
77 float m_availableWidth; | 85 float m_availableWidth; |
78 bool m_isFirstLine; | 86 bool m_isFirstLine; |
79 IndentTextOrNot m_shouldIndentText; | 87 IndentTextOrNot m_shouldIndentText; |
80 }; | 88 }; |
81 | 89 |
82 } | 90 } |
83 | 91 |
84 #endif // LineWidth_h | 92 #endif // LineWidth_h |
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