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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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