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1 /* | 1 /* |
2 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All r
ights reserved. | 2 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All r
ights reserved. |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
18 * | 18 * |
19 */ | 19 */ |
20 | 20 |
21 #ifndef InlineBox_h | 21 #ifndef InlineBox_h |
22 #define InlineBox_h | 22 #define InlineBox_h |
23 | 23 |
| 24 #include "core/layout/LayoutObject.h" |
24 #include "core/layout/line/FloatToLayoutUnit.h" | 25 #include "core/layout/line/FloatToLayoutUnit.h" |
25 #include "core/rendering/RenderBoxModelObject.h" | 26 #include "core/rendering/RenderBoxModelObject.h" |
26 #include "core/rendering/RenderObjectInlines.h" | |
27 #include "platform/graphics/paint/DisplayItemClient.h" | 27 #include "platform/graphics/paint/DisplayItemClient.h" |
28 #include "platform/text/TextDirection.h" | 28 #include "platform/text/TextDirection.h" |
29 | 29 |
30 namespace blink { | 30 namespace blink { |
31 | 31 |
32 class HitTestRequest; | 32 class HitTestRequest; |
33 class HitTestResult; | 33 class HitTestResult; |
34 class RootInlineBox; | 34 class RootInlineBox; |
35 | 35 |
36 enum MarkLineBoxes { MarkLineBoxesDirty, DontMarkLineBoxes }; | 36 enum MarkLineBoxes { MarkLineBoxesDirty, DontMarkLineBoxes }; |
37 | 37 |
38 // InlineBox represents a rectangle that occurs on a line. It corresponds to | 38 // InlineBox represents a rectangle that occurs on a line. It corresponds to |
39 // some RenderObject (i.e., it represents a portion of that RenderObject). | 39 // some LayoutObject (i.e., it represents a portion of that LayoutObject). |
40 class InlineBox { | 40 class InlineBox { |
41 WTF_MAKE_NONCOPYABLE(InlineBox); | 41 WTF_MAKE_NONCOPYABLE(InlineBox); |
42 public: | 42 public: |
43 InlineBox(RenderObject& obj) | 43 InlineBox(LayoutObject& obj) |
44 : m_next(0) | 44 : m_next(0) |
45 , m_prev(0) | 45 , m_prev(0) |
46 , m_parent(0) | 46 , m_parent(0) |
47 , m_renderer(obj) | 47 , m_renderer(obj) |
48 , m_logicalWidth() | 48 , m_logicalWidth() |
49 #if ENABLE(ASSERT) | 49 #if ENABLE(ASSERT) |
50 , m_hasBadParent(false) | 50 , m_hasBadParent(false) |
51 #endif | 51 #endif |
52 { | 52 { |
53 } | 53 } |
54 | 54 |
55 InlineBox(RenderObject& obj, FloatPointWillBeLayoutPoint topLeft, FloatWillB
eLayoutUnit logicalWidth, bool firstLine, bool constructed, bool dirty, bool ext
racted, bool isHorizontal, InlineBox* next, InlineBox* prev, InlineFlowBox* pare
nt) | 55 InlineBox(LayoutObject& obj, FloatPointWillBeLayoutPoint topLeft, FloatWillB
eLayoutUnit logicalWidth, bool firstLine, bool constructed, |
| 56 bool dirty, bool extracted, bool isHorizontal, InlineBox* next, InlineBo
x* prev, InlineFlowBox* parent) |
56 : m_next(next) | 57 : m_next(next) |
57 , m_prev(prev) | 58 , m_prev(prev) |
58 , m_parent(parent) | 59 , m_parent(parent) |
59 , m_renderer(obj) | 60 , m_renderer(obj) |
60 , m_topLeft(topLeft) | 61 , m_topLeft(topLeft) |
61 , m_logicalWidth(logicalWidth) | 62 , m_logicalWidth(logicalWidth) |
62 , m_bitfields(firstLine, constructed, dirty, extracted, isHorizontal) | 63 , m_bitfields(firstLine, constructed, dirty, extracted, isHorizontal) |
63 #if ENABLE(ASSERT) | 64 #if ENABLE(ASSERT) |
64 , m_hasBadParent(false) | 65 , m_hasBadParent(false) |
65 #endif | 66 #endif |
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104 | 105 |
105 // InlineBoxes are allocated out of the rendering partition. | 106 // InlineBoxes are allocated out of the rendering partition. |
106 void* operator new(size_t); | 107 void* operator new(size_t); |
107 void operator delete(void*); | 108 void operator delete(void*); |
108 | 109 |
109 #ifndef NDEBUG | 110 #ifndef NDEBUG |
110 void showTreeForThis() const; | 111 void showTreeForThis() const; |
111 void showLineTreeForThis() const; | 112 void showLineTreeForThis() const; |
112 | 113 |
113 virtual void showBox(int = 0) const; | 114 virtual void showBox(int = 0) const; |
114 virtual void showLineTreeAndMark(const InlineBox* = 0, const char* = 0, cons
t InlineBox* = 0, const char* = 0, const RenderObject* = 0, int = 0) const; | 115 virtual void showLineTreeAndMark(const InlineBox* = 0, const char* = 0, cons
t InlineBox* = 0, const char* = 0, const LayoutObject* = 0, int = 0) const; |
115 virtual const char* boxName() const; | 116 virtual const char* boxName() const; |
116 #endif | 117 #endif |
117 | 118 |
118 bool isText() const { return m_bitfields.isText(); } | 119 bool isText() const { return m_bitfields.isText(); } |
119 void setIsText(bool isText) { m_bitfields.setIsText(isText); } | 120 void setIsText(bool isText) { m_bitfields.setIsText(isText); } |
120 | 121 |
121 virtual bool isInlineFlowBox() const { return false; } | 122 virtual bool isInlineFlowBox() const { return false; } |
122 virtual bool isInlineTextBox() const { return false; } | 123 virtual bool isInlineTextBox() const { return false; } |
123 virtual bool isRootInlineBox() const { return false; } | 124 virtual bool isRootInlineBox() const { return false; } |
124 | 125 |
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171 | 172 |
172 InlineBox* nextLeafChild() const; | 173 InlineBox* nextLeafChild() const; |
173 InlineBox* prevLeafChild() const; | 174 InlineBox* prevLeafChild() const; |
174 | 175 |
175 // Helper functions for editing and hit-testing code. | 176 // Helper functions for editing and hit-testing code. |
176 // FIXME: These two functions should be moved to RenderedPosition once the c
ode to convert between | 177 // FIXME: These two functions should be moved to RenderedPosition once the c
ode to convert between |
177 // Position and inline box, offset pair is moved to RenderedPosition. | 178 // Position and inline box, offset pair is moved to RenderedPosition. |
178 InlineBox* nextLeafChildIgnoringLineBreak() const; | 179 InlineBox* nextLeafChildIgnoringLineBreak() const; |
179 InlineBox* prevLeafChildIgnoringLineBreak() const; | 180 InlineBox* prevLeafChildIgnoringLineBreak() const; |
180 | 181 |
181 RenderObject& renderer() const { return m_renderer; } | 182 LayoutObject& renderer() const { return m_renderer; } |
182 | 183 |
183 InlineFlowBox* parent() const | 184 InlineFlowBox* parent() const |
184 { | 185 { |
185 ASSERT(!m_hasBadParent); | 186 ASSERT(!m_hasBadParent); |
186 return m_parent; | 187 return m_parent; |
187 } | 188 } |
188 void setParent(InlineFlowBox* par) { m_parent = par; } | 189 void setParent(InlineFlowBox* par) { m_parent = par; } |
189 | 190 |
190 const RootInlineBox& root() const; | 191 const RootInlineBox& root() const; |
191 RootInlineBox& root(); | 192 RootInlineBox& root(); |
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256 int caretLeftmostOffset() const { return isLeftToRightDirection() ? caretMin
Offset() : caretMaxOffset(); } | 257 int caretLeftmostOffset() const { return isLeftToRightDirection() ? caretMin
Offset() : caretMaxOffset(); } |
257 int caretRightmostOffset() const { return isLeftToRightDirection() ? caretMa
xOffset() : caretMinOffset(); } | 258 int caretRightmostOffset() const { return isLeftToRightDirection() ? caretMa
xOffset() : caretMinOffset(); } |
258 | 259 |
259 virtual void clearTruncation() { } | 260 virtual void clearTruncation() { } |
260 | 261 |
261 bool isDirty() const { return m_bitfields.dirty(); } | 262 bool isDirty() const { return m_bitfields.dirty(); } |
262 virtual void markDirty() { m_bitfields.setDirty(true); } | 263 virtual void markDirty() { m_bitfields.setDirty(true); } |
263 | 264 |
264 virtual void dirtyLineBoxes(); | 265 virtual void dirtyLineBoxes(); |
265 | 266 |
266 virtual RenderObject::SelectionState selectionState() const; | 267 virtual LayoutObject::SelectionState selectionState() const; |
267 | 268 |
268 virtual bool canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWid
th) const; | 269 virtual bool canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWid
th) const; |
269 // visibleLeftEdge, visibleRightEdge are in the parent's coordinate system. | 270 // visibleLeftEdge, visibleRightEdge are in the parent's coordinate system. |
270 virtual FloatWillBeLayoutUnit placeEllipsisBox(bool ltr, FloatWillBeLayoutUn
it visibleLeftEdge, FloatWillBeLayoutUnit visibleRightEdge, FloatWillBeLayoutUni
t ellipsisWidth, FloatWillBeLayoutUnit &truncatedWidth, bool&); | 271 virtual FloatWillBeLayoutUnit placeEllipsisBox(bool ltr, FloatWillBeLayoutUn
it visibleLeftEdge, FloatWillBeLayoutUnit visibleRightEdge, FloatWillBeLayoutUni
t ellipsisWidth, FloatWillBeLayoutUnit &truncatedWidth, bool&); |
271 | 272 |
272 #if ENABLE(ASSERT) | 273 #if ENABLE(ASSERT) |
273 void setHasBadParent(); | 274 void setHasBadParent(); |
274 #endif | 275 #endif |
275 | 276 |
276 int expansion() const { return m_bitfields.expansion(); } | 277 int expansion() const { return m_bitfields.expansion(); } |
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377 signed expansion() const { return m_expansion; } | 378 signed expansion() const { return m_expansion; } |
378 void setExpansion(signed expansion) { m_expansion = expansion; } | 379 void setExpansion(signed expansion) { m_expansion = expansion; } |
379 }; | 380 }; |
380 #undef ADD_BOOLEAN_BITFIELD | 381 #undef ADD_BOOLEAN_BITFIELD |
381 | 382 |
382 private: | 383 private: |
383 InlineBox* m_next; // The next element on the same line as us. | 384 InlineBox* m_next; // The next element on the same line as us. |
384 InlineBox* m_prev; // The previous element on the same line as us. | 385 InlineBox* m_prev; // The previous element on the same line as us. |
385 | 386 |
386 InlineFlowBox* m_parent; // The box that contains us. | 387 InlineFlowBox* m_parent; // The box that contains us. |
387 RenderObject& m_renderer; | 388 LayoutObject& m_renderer; |
388 | 389 |
389 protected: | 390 protected: |
390 // For RootInlineBox | 391 // For RootInlineBox |
391 bool endsWithBreak() const { return m_bitfields.endsWithBreak(); } | 392 bool endsWithBreak() const { return m_bitfields.endsWithBreak(); } |
392 void setEndsWithBreak(bool endsWithBreak) { m_bitfields.setEndsWithBreak(end
sWithBreak); } | 393 void setEndsWithBreak(bool endsWithBreak) { m_bitfields.setEndsWithBreak(end
sWithBreak); } |
393 bool hasEllipsisBox() const { return m_bitfields.hasEllipsisBoxOrHyphen(); } | 394 bool hasEllipsisBox() const { return m_bitfields.hasEllipsisBoxOrHyphen(); } |
394 bool hasSelectedChildren() const { return m_bitfields.hasSelectedChildrenOrC
anHaveLeadingExpansion(); } | 395 bool hasSelectedChildren() const { return m_bitfields.hasSelectedChildrenOrC
anHaveLeadingExpansion(); } |
395 void setHasSelectedChildren(bool hasSelectedChildren) { m_bitfields.setHasSe
lectedChildrenOrCanHaveLeadingExpansion(hasSelectedChildren); } | 396 void setHasSelectedChildren(bool hasSelectedChildren) { m_bitfields.setHasSe
lectedChildrenOrCanHaveLeadingExpansion(hasSelectedChildren); } |
396 void setHasEllipsisBox(bool hasEllipsisBox) { m_bitfields.setHasEllipsisBoxO
rHyphen(hasEllipsisBox); } | 397 void setHasEllipsisBox(bool hasEllipsisBox) { m_bitfields.setHasEllipsisBoxO
rHyphen(hasEllipsisBox); } |
397 | 398 |
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438 | 439 |
439 } // namespace blink | 440 } // namespace blink |
440 | 441 |
441 #ifndef NDEBUG | 442 #ifndef NDEBUG |
442 // Outside the WebCore namespace for ease of invocation from gdb. | 443 // Outside the WebCore namespace for ease of invocation from gdb. |
443 void showTree(const blink::InlineBox*); | 444 void showTree(const blink::InlineBox*); |
444 void showLineTree(const blink::InlineBox*); | 445 void showLineTree(const blink::InlineBox*); |
445 #endif | 446 #endif |
446 | 447 |
447 #endif // InlineBox_h | 448 #endif // InlineBox_h |
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