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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. |
(...skipping 17 matching lines...) Expand all Loading... |
28 */ | 28 */ |
29 | 29 |
30 #ifndef LineWidth_h | 30 #ifndef LineWidth_h |
31 #define LineWidth_h | 31 #define LineWidth_h |
32 | 32 |
33 #include "platform/LayoutUnit.h" | 33 #include "platform/LayoutUnit.h" |
34 | 34 |
35 namespace blink { | 35 namespace blink { |
36 | 36 |
37 class FloatingObject; | 37 class FloatingObject; |
38 class RenderObject; | 38 class LayoutObject; |
39 class LayoutRubyRun; | 39 class LayoutRubyRun; |
40 class RenderBlockFlow; | 40 class RenderBlockFlow; |
41 | 41 |
42 enum IndentTextOrNot { DoNotIndentText, IndentText }; | 42 enum IndentTextOrNot { DoNotIndentText, IndentText }; |
43 enum WhitespaceTreatment { ExcludeWhitespace, IncludeWhitespace }; | 43 enum WhitespaceTreatment { ExcludeWhitespace, IncludeWhitespace }; |
44 | 44 |
45 class LineWidth { | 45 class LineWidth { |
46 public: | 46 public: |
47 LineWidth(RenderBlockFlow&, bool isFirstLine, IndentTextOrNot shouldIndentTe
xt); | 47 LineWidth(RenderBlockFlow&, bool isFirstLine, IndentTextOrNot shouldIndentTe
xt); |
48 | 48 |
49 bool fitsOnLine() const { return currentWidth() <= (m_availableWidth + Layou
tUnit::epsilon()); } | 49 bool fitsOnLine() const { return currentWidth() <= (m_availableWidth + Layou
tUnit::epsilon()); } |
50 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 | 51 bool fitsOnLine(float extra, WhitespaceTreatment whitespaceTreatment) const |
52 { | 52 { |
53 return currentWidth() - (whitespaceTreatment == ExcludeWhitespace ? trai
lingWhitespaceWidth() : 0) + extra <= (m_availableWidth + LayoutUnit::epsilon())
; | 53 return currentWidth() - (whitespaceTreatment == ExcludeWhitespace ? trai
lingWhitespaceWidth() : 0) + extra <= (m_availableWidth + LayoutUnit::epsilon())
; |
54 } | 54 } |
55 | 55 |
56 float currentWidth() const { return m_committedWidth + m_uncommittedWidth; } | 56 float currentWidth() const { return m_committedWidth + m_uncommittedWidth; } |
57 // 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. |
58 float uncommittedWidth() const { return m_uncommittedWidth; } | 58 float uncommittedWidth() const { return m_uncommittedWidth; } |
59 float committedWidth() const { return m_committedWidth; } | 59 float committedWidth() const { return m_committedWidth; } |
60 float availableWidth() const { return m_availableWidth; } | 60 float availableWidth() const { return m_availableWidth; } |
61 float trailingWhitespaceWidth() const { return m_trailingWhitespaceWidth; } | 61 float trailingWhitespaceWidth() const { return m_trailingWhitespaceWidth; } |
62 | 62 |
63 void updateAvailableWidth(LayoutUnit minimumHeight = 0); | 63 void updateAvailableWidth(LayoutUnit minimumHeight = 0); |
64 void shrinkAvailableWidthForNewFloatIfNeeded(FloatingObject*); | 64 void shrinkAvailableWidthForNewFloatIfNeeded(FloatingObject*); |
65 void addUncommittedWidth(float delta) { m_uncommittedWidth += delta; } | 65 void addUncommittedWidth(float delta) { m_uncommittedWidth += delta; } |
66 void commit(); | 66 void commit(); |
67 void applyOverhang(LayoutRubyRun*, RenderObject* startRenderer, RenderObject
* endRenderer); | 67 void applyOverhang(LayoutRubyRun*, LayoutObject* startRenderer, LayoutObject
* endRenderer); |
68 void fitBelowFloats(bool isFirstLine = false); | 68 void fitBelowFloats(bool isFirstLine = false); |
69 void setTrailingWhitespaceWidth(float width) { m_trailingWhitespaceWidth = w
idth; } | 69 void setTrailingWhitespaceWidth(float width) { m_trailingWhitespaceWidth = w
idth; } |
70 | 70 |
71 bool shouldIndentText() const { return m_shouldIndentText == IndentText; } | 71 bool shouldIndentText() const { return m_shouldIndentText == IndentText; } |
72 | 72 |
73 private: | 73 private: |
74 void computeAvailableWidthFromLeftAndRight(); | 74 void computeAvailableWidthFromLeftAndRight(); |
75 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); |
76 void wrapNextToShapeOutside(bool isFirstLine); | 76 void wrapNextToShapeOutside(bool isFirstLine); |
77 | 77 |
78 RenderBlockFlow& m_block; | 78 RenderBlockFlow& m_block; |
79 float m_uncommittedWidth; | 79 float m_uncommittedWidth; |
80 float m_committedWidth; | 80 float m_committedWidth; |
81 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; | 82 float m_trailingWhitespaceWidth; |
83 float m_left; | 83 float m_left; |
84 float m_right; | 84 float m_right; |
85 float m_availableWidth; | 85 float m_availableWidth; |
86 bool m_isFirstLine; | 86 bool m_isFirstLine; |
87 IndentTextOrNot m_shouldIndentText; | 87 IndentTextOrNot m_shouldIndentText; |
88 }; | 88 }; |
89 | 89 |
90 } | 90 } |
91 | 91 |
92 #endif // LineWidth_h | 92 #endif // LineWidth_h |
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