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Side by Side Diff: Source/core/layout/LayoutText.h

Issue 1231363003: Fix virtual/override/final usage in Source/core/layout/. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 5 years, 5 months ago
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1 /* 1 /*
2 * (C) 1999 Lars Knoll (knoll@kde.org) 2 * (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 2000 Dirk Mueller (mueller@kde.org) 3 * (C) 2000 Dirk Mueller (mueller@kde.org)
4 * Copyright (C) 2004-2009, 2013 Apple Inc. All rights reserved. 4 * Copyright (C) 2004-2009, 2013 Apple Inc. All rights reserved.
5 * 5 *
6 * This library is free software; you can redistribute it and/or 6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public 7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either 8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version. 9 * version 2 of the License, or (at your option) any later version.
10 * 10 *
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37 class AbstractInlineTextBox; 37 class AbstractInlineTextBox;
38 class InlineTextBox; 38 class InlineTextBox;
39 39
40 class CORE_EXPORT LayoutText : public LayoutObject { 40 class CORE_EXPORT LayoutText : public LayoutObject {
41 public: 41 public:
42 // FIXME: If the node argument is not a Text node or the string argument is 42 // FIXME: If the node argument is not a Text node or the string argument is
43 // not the content of the Text node, updating text-transform property 43 // not the content of the Text node, updating text-transform property
44 // doesn't re-transform the string. 44 // doesn't re-transform the string.
45 LayoutText(Node*, PassRefPtr<StringImpl>); 45 LayoutText(Node*, PassRefPtr<StringImpl>);
46 #if ENABLE(ASSERT) 46 #if ENABLE(ASSERT)
47 virtual ~LayoutText(); 47 ~LayoutText() override;
48 #endif 48 #endif
49 49
50 virtual const char* name() const override { return "LayoutText"; } 50 const char* name() const override { return "LayoutText"; }
51 51
52 virtual bool isTextFragment() const; 52 virtual bool isTextFragment() const;
53 virtual bool isWordBreak() const; 53 virtual bool isWordBreak() const;
54 54
55 virtual PassRefPtr<StringImpl> originalText() const; 55 virtual PassRefPtr<StringImpl> originalText() const;
56 56
57 void extractTextBox(InlineTextBox*); 57 void extractTextBox(InlineTextBox*);
58 void attachTextBox(InlineTextBox*); 58 void attachTextBox(InlineTextBox*);
59 void removeTextBox(InlineTextBox*); 59 void removeTextBox(InlineTextBox*);
60 60
61 const String& text() const { return m_text; } 61 const String& text() const { return m_text; }
62 virtual unsigned textStartOffset() const { return 0; } 62 virtual unsigned textStartOffset() const { return 0; }
63 String plainText() const; 63 String plainText() const;
64 64
65 InlineTextBox* createInlineTextBox(int start, unsigned short length); 65 InlineTextBox* createInlineTextBox(int start, unsigned short length);
66 void dirtyOrDeleteLineBoxesIfNeeded(bool fullLayout); 66 void dirtyOrDeleteLineBoxesIfNeeded(bool fullLayout);
67 void dirtyLineBoxes(); 67 void dirtyLineBoxes();
68 68
69 virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedO ffset) const override final; 69 void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) c onst final;
70 void absoluteRectsForRange(Vector<IntRect>&, unsigned startOffset = 0, unsig ned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = nullp tr); 70 void absoluteRectsForRange(Vector<IntRect>&, unsigned startOffset = 0, unsig ned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = nullp tr);
71 71
72 virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const overrid e final; 72 void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const final;
73 void absoluteQuadsForRange(Vector<FloatQuad>&, unsigned startOffset = 0, uns igned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = nul lptr); 73 void absoluteQuadsForRange(Vector<FloatQuad>&, unsigned startOffset = 0, uns igned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = nul lptr);
74 74
75 enum ClippingOption { NoClipping, ClipToEllipsis }; 75 enum ClippingOption { NoClipping, ClipToEllipsis };
76 void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed = nullptr, ClippingOpt ion = NoClipping) const; 76 void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed = nullptr, ClippingOpt ion = NoClipping) const;
77 77
78 virtual PositionWithAffinity positionForPoint(const LayoutPoint&) override; 78 PositionWithAffinity positionForPoint(const LayoutPoint&) override;
79 79
80 bool is8Bit() const { return m_text.is8Bit(); } 80 bool is8Bit() const { return m_text.is8Bit(); }
81 const LChar* characters8() const { return m_text.impl()->characters8(); } 81 const LChar* characters8() const { return m_text.impl()->characters8(); }
82 const UChar* characters16() const { return m_text.impl()->characters16(); } 82 const UChar* characters16() const { return m_text.impl()->characters16(); }
83 bool hasEmptyText() const { return m_text.isEmpty(); } 83 bool hasEmptyText() const { return m_text.isEmpty(); }
84 UChar characterAt(unsigned) const; 84 UChar characterAt(unsigned) const;
85 UChar uncheckedCharacterAt(unsigned) const; 85 UChar uncheckedCharacterAt(unsigned) const;
86 UChar operator[](unsigned i) const { return uncheckedCharacterAt(i); } 86 UChar operator[](unsigned i) const { return uncheckedCharacterAt(i); }
87 unsigned textLength() const { return m_text.length(); } // non virtual imple mentation of length() 87 unsigned textLength() const { return m_text.length(); } // non virtual imple mentation of length()
88 void positionLineBox(InlineBox*); 88 void positionLineBox(InlineBox*);
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106 106
107 FloatPoint firstRunOrigin() const; 107 FloatPoint firstRunOrigin() const;
108 float firstRunX() const; 108 float firstRunX() const;
109 float firstRunY() const; 109 float firstRunY() const;
110 110
111 virtual void setText(PassRefPtr<StringImpl>, bool force = false); 111 virtual void setText(PassRefPtr<StringImpl>, bool force = false);
112 void setTextWithOffset(PassRefPtr<StringImpl>, unsigned offset, unsigned len , bool force = false); 112 void setTextWithOffset(PassRefPtr<StringImpl>, unsigned offset, unsigned len , bool force = false);
113 113
114 virtual void transformText(); 114 virtual void transformText();
115 115
116 virtual bool canBeSelectionLeaf() const override { return true; } 116 bool canBeSelectionLeaf() const override { return true; }
117 virtual void setSelectionState(SelectionState) override final; 117 void setSelectionState(SelectionState) final;
118 virtual LayoutRect selectionRectForPaintInvalidation(const LayoutBoxModelObj ect* paintInvalidationContainer) const override; 118 LayoutRect selectionRectForPaintInvalidation(const LayoutBoxModelObject* pai ntInvalidationContainer) const override;
119 virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* e xtraWidthToEndOfLine = nullptr) override; 119 LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidt hToEndOfLine = nullptr) override;
120 120
121 InlineTextBox* firstTextBox() const { return m_firstTextBox; } 121 InlineTextBox* firstTextBox() const { return m_firstTextBox; }
122 InlineTextBox* lastTextBox() const { return m_lastTextBox; } 122 InlineTextBox* lastTextBox() const { return m_lastTextBox; }
123 123
124 virtual int caretMinOffset() const override; 124 int caretMinOffset() const override;
125 virtual int caretMaxOffset() const override; 125 int caretMaxOffset() const override;
126 unsigned resolvedTextLength() const; 126 unsigned resolvedTextLength() const;
127 127
128 virtual int previousOffset(int current) const override final; 128 int previousOffset(int current) const final;
129 virtual int previousOffsetForBackwardDeletion(int current) const override fi nal; 129 int previousOffsetForBackwardDeletion(int current) const final;
130 virtual int nextOffset(int current) const override final; 130 int nextOffset(int current) const final;
131 131
132 bool containsReversedText() const { return m_containsReversedText; } 132 bool containsReversedText() const { return m_containsReversedText; }
133 133
134 bool isSecure() const { return style()->textSecurity() != TSNONE; } 134 bool isSecure() const { return style()->textSecurity() != TSNONE; }
135 void momentarilyRevealLastTypedCharacter(unsigned lastTypedCharacterOffset); 135 void momentarilyRevealLastTypedCharacter(unsigned lastTypedCharacterOffset);
136 136
137 bool isAllCollapsibleWhitespace() const; 137 bool isAllCollapsibleWhitespace() const;
138 138
139 bool canUseSimpleFontCodePath() const { return m_canUseSimpleFontCodePath; } 139 bool canUseSimpleFontCodePath() const { return m_canUseSimpleFontCodePath; }
140 140
141 void removeAndDestroyTextBoxes(); 141 void removeAndDestroyTextBoxes();
142 142
143 PassRefPtr<AbstractInlineTextBox> firstAbstractInlineTextBox(); 143 PassRefPtr<AbstractInlineTextBox> firstAbstractInlineTextBox();
144 144
145 float hyphenWidth(const Font&, TextDirection); 145 float hyphenWidth(const Font&, TextDirection);
146 146
147 protected: 147 protected:
148 virtual void willBeDestroyed() override; 148 void willBeDestroyed() override;
149 149
150 virtual void styleWillChange(StyleDifference, const ComputedStyle&) override final { } 150 void styleWillChange(StyleDifference, const ComputedStyle&) final { }
151 virtual void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override; 151 void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override ;
152 152
153 virtual void setTextInternal(PassRefPtr<StringImpl>); 153 virtual void setTextInternal(PassRefPtr<StringImpl>);
154 virtual UChar previousCharacter() const; 154 virtual UChar previousCharacter() const;
155 155
156 virtual void addLayerHitTestRects(LayerHitTestRects&, const DeprecatedPaintL ayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerR ect) const override; 156 void addLayerHitTestRects(LayerHitTestRects&, const DeprecatedPaintLayer* cu rrentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) con st override;
157 157
158 virtual InlineTextBox* createTextBox(int start, unsigned short length); // S ubclassed by SVG. 158 virtual InlineTextBox* createTextBox(int start, unsigned short length); // S ubclassed by SVG.
159 159
160 virtual void invalidateDisplayItemClients(const LayoutBoxModelObject& paintI nvalidationContainer) const override; 160 void invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidat ionContainer) const override;
161 161
162 private: 162 private:
163 void computePreferredLogicalWidths(float leadWidth); 163 void computePreferredLogicalWidths(float leadWidth);
164 void computePreferredLogicalWidths(float leadWidth, HashSet<const SimpleFont Data*>& fallbackFonts, FloatRect& glyphBounds); 164 void computePreferredLogicalWidths(float leadWidth, HashSet<const SimpleFont Data*>& fallbackFonts, FloatRect& glyphBounds);
165 165
166 bool computeCanUseSimpleFontCodePath() const; 166 bool computeCanUseSimpleFontCodePath() const;
167 167
168 // Make length() private so that callers that have a LayoutText* 168 // Make length() private so that callers that have a LayoutText*
169 // will use the more efficient textLength() instead, while 169 // will use the more efficient textLength() instead, while
170 // callers with a LayoutObject* can continue to use length(). 170 // callers with a LayoutObject* can continue to use length().
171 virtual unsigned length() const override final { return textLength(); } 171 unsigned length() const final { return textLength(); }
172 172
173 virtual void paint(const PaintInfo&, const LayoutPoint&) override final { AS SERT_NOT_REACHED(); } 173 void paint(const PaintInfo&, const LayoutPoint&) final { ASSERT_NOT_REACHED( ); }
174 virtual void layout() override final { ASSERT_NOT_REACHED(); } 174 void layout() final { ASSERT_NOT_REACHED(); }
175 virtual bool nodeAtPoint(HitTestResult&, const HitTestLocation&, const Layou tPoint&, HitTestAction) override final { ASSERT_NOT_REACHED(); return false; } 175 bool nodeAtPoint(HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) final { ASSERT_NOT_REACHED(); return false; }
176 176
177 void deleteTextBoxes(); 177 void deleteTextBoxes();
178 bool containsOnlyWhitespace(unsigned from, unsigned len) const; 178 bool containsOnlyWhitespace(unsigned from, unsigned len) const;
179 float widthFromFont(const Font&, int start, int len, float leadWidth, float textWidthSoFar, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts, Fl oatRect* glyphBoundsAccumulation) const; 179 float widthFromFont(const Font&, int start, int len, float leadWidth, float textWidthSoFar, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts, Fl oatRect* glyphBoundsAccumulation) const;
180 180
181 void secureText(UChar mask); 181 void secureText(UChar mask);
182 182
183 bool isText() const = delete; // This will catch anyone doing an unnecessary check. 183 bool isText() const = delete; // This will catch anyone doing an unnecessary check.
184 184
185 virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxMo delObject* paintInvalidationContainer, const PaintInvalidationState* = nullptr) const override; 185 LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObjec t* paintInvalidationContainer, const PaintInvalidationState* = nullptr) const ov erride;
186 186
187 void checkConsistency() const; 187 void checkConsistency() const;
188 188
189 // We put the bitfield first to minimize padding on 64-bit. 189 // We put the bitfield first to minimize padding on 64-bit.
190 bool m_hasBreakableChar : 1; // Whether or not we can be broken into multipl e lines. 190 bool m_hasBreakableChar : 1; // Whether or not we can be broken into multipl e lines.
191 bool m_hasBreak : 1; // Whether or not we have a hard break (e.g., <pre> wit h '\n'). 191 bool m_hasBreak : 1; // Whether or not we have a hard break (e.g., <pre> wit h '\n').
192 bool m_hasTab : 1; // Whether or not we have a variable width tab character (e.g., <pre> with '\t'). 192 bool m_hasTab : 1; // Whether or not we have a variable width tab character (e.g., <pre> with '\t').
193 bool m_hasBreakableStart : 1; 193 bool m_hasBreakableStart : 1;
194 bool m_hasBreakableEnd : 1; 194 bool m_hasBreakableEnd : 1;
195 bool m_hasEndWhiteSpace : 1; 195 bool m_hasEndWhiteSpace : 1;
(...skipping 48 matching lines...) Expand 10 before | Expand all | Expand 10 after
244 inline LayoutText* Text::layoutObject() const 244 inline LayoutText* Text::layoutObject() const
245 { 245 {
246 return toLayoutText(CharacterData::layoutObject()); 246 return toLayoutText(CharacterData::layoutObject());
247 } 247 }
248 248
249 void applyTextTransform(const ComputedStyle*, String&, UChar); 249 void applyTextTransform(const ComputedStyle*, String&, UChar);
250 250
251 } // namespace blink 251 } // namespace blink
252 252
253 #endif // LayoutText_h 253 #endif // LayoutText_h
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