1 /*
2 * Copyright (C) 1997 Martin Jones (mjones@kde.org)
3 * (C) 1997 Torben Weis (weis@kde.org)
4 * (C) 1998 Waldo Bastian (bastian@kde.org)
5 * (C) 1999 Lars Knoll (knoll@kde.org)
6 * (C) 1999 Antti Koivisto (koivisto@kde.org)
7 * Copyright (C) 2003, 2004, 2005, 2006, 2009, 2010 Apple Inc. All rights reserved.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU Library General Public License
20 * along with this library; see the file COPYING.LIB. If not, write to
21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
23 */
24
25 #ifndef RenderTable_h
26 #define RenderTable_h
27
28 #include "core/CSSPropertyNames.h"
29 #include "core/rendering/RenderBlock.h"
30 #include "core/rendering/style/CollapsedBorderValue.h"
31 #include "wtf/Vector.h"
32
33 namespace WebCore {
34
35 class RenderTableCol;
36 class RenderTableCaption;
37 class RenderTableCell;
38 class RenderTableSection;
39 class TableLayout;
40
41 enum SkipEmptySectionsValue { DoNotSkipEmptySections, SkipEmptySections };
42
43 class RenderTable FINAL : public RenderBlock {
44 public:
45 explicit RenderTable(Element*);
46 virtual ~RenderTable();
47
48 // Per CSS 3 writing-mode: "The first and second values of the 'border-spacing' property represent spacing between columns
49 // and rows respectively, not necessarily the horizontal and vertical spacing respectively".
hBorderSpacing()50 int hBorderSpacing() const { return m_hSpacing; }
vBorderSpacing()51 int vBorderSpacing() const { return m_vSpacing; }
52
collapseBorders()53 bool collapseBorders() const { return style()->borderCollapse(); }
54
borderStart()55 virtual int borderStart() const OVERRIDE { return m_borderStart; }
borderEnd()56 virtual int borderEnd() const OVERRIDE { return m_borderEnd; }
57 virtual int borderBefore() const OVERRIDE;
58 virtual int borderAfter() const OVERRIDE;
59
borderLeft()60 virtual int borderLeft() const OVERRIDE
61 {
62 if (style()->isHorizontalWritingMode())
63 return style()->isLeftToRightDirection() ? borderStart() : borderEnd();
64 return style()->isFlippedBlocksWritingMode() ? borderAfter() : borderBefore();
65 }
66
borderRight()67 virtual int borderRight() const OVERRIDE
68 {
69 if (style()->isHorizontalWritingMode())
70 return style()->isLeftToRightDirection() ? borderEnd() : borderStart();
71 return style()->isFlippedBlocksWritingMode() ? borderBefore() : borderAfter();
72 }
73
borderTop()74 virtual int borderTop() const OVERRIDE
75 {
76 if (style()->isHorizontalWritingMode())
77 return style()->isFlippedBlocksWritingMode() ? borderAfter() : borderBefore();
78 return style()->isLeftToRightDirection() ? borderStart() : borderEnd();
79 }
80
borderBottom()81 virtual int borderBottom() const OVERRIDE
82 {
83 if (style()->isHorizontalWritingMode())
84 return style()->isFlippedBlocksWritingMode() ? borderBefore() : borderAfter();
85 return style()->isLeftToRightDirection() ? borderEnd() : borderStart();
86 }
87
bgColor()88 Color bgColor() const { return resolveColor(CSSPropertyBackgroundColor); }
89
90 int outerBorderBefore() const;
91 int outerBorderAfter() const;
92 int outerBorderStart() const;
93 int outerBorderEnd() const;
94
outerBorderLeft()95 int outerBorderLeft() const
96 {
97 if (style()->isHorizontalWritingMode())
98 return style()->isLeftToRightDirection() ? outerBorderStart() : outerBorderEnd();
99 return style()->isFlippedBlocksWritingMode() ? outerBorderAfter() : outerBorderBefore();
100 }
101
outerBorderRight()102 int outerBorderRight() const
103 {
104 if (style()->isHorizontalWritingMode())
105 return style()->isLeftToRightDirection() ? outerBorderEnd() : outerBorderStart();
106 return style()->isFlippedBlocksWritingMode() ? outerBorderBefore() : outerBorderAfter();
107 }
108
outerBorderTop()109 int outerBorderTop() const
110 {
111 if (style()->isHorizontalWritingMode())
112 return style()->isFlippedBlocksWritingMode() ? outerBorderAfter() : outerBorderBefore();
113 return style()->isLeftToRightDirection() ? outerBorderStart() : outerBorderEnd();
114 }
115
outerBorderBottom()116 int outerBorderBottom() const
117 {
118 if (style()->isHorizontalWritingMode())
119 return style()->isFlippedBlocksWritingMode() ? outerBorderBefore() : outerBorderAfter();
120 return style()->isLeftToRightDirection() ? outerBorderEnd() : outerBorderStart();
121 }
122
123 int calcBorderStart() const;
124 int calcBorderEnd() const;
125 void recalcBordersInRowDirection();
126
127 virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) OVERRIDE;
128
129 struct ColumnStruct {
130 explicit ColumnStruct(unsigned initialSpan = 1)
spanColumnStruct131 : span(initialSpan)
132 {
133 }
134
135 unsigned span;
136 };
137
forceSectionsRecalc()138 void forceSectionsRecalc()
139 {
140 setNeedsSectionRecalc();
141 recalcSections();
142 }
143
columns()144 const Vector<ColumnStruct>& columns() const { return m_columns; }
columnPositions()145 const Vector<int>& columnPositions() const { return m_columnPos; }
setColumnPosition(unsigned index,int position)146 void setColumnPosition(unsigned index, int position)
147 {
148 // Note that if our horizontal border-spacing changed, our position will change but not
149 // our column's width. In practice, horizontal border-spacing won't change often.
150 m_columnLogicalWidthChanged |= m_columnPos[index] != position;
151 m_columnPos[index] = position;
152 }
153
header()154 RenderTableSection* header() const { return m_head; }
footer()155 RenderTableSection* footer() const { return m_foot; }
firstBody()156 RenderTableSection* firstBody() const { return m_firstBody; }
157
158 // This function returns 0 if the table has no section.
159 RenderTableSection* topSection() const;
160 RenderTableSection* bottomSection() const;
161
162 // This function returns 0 if the table has no non-empty sections.
163 RenderTableSection* topNonEmptySection() const;
164
lastColumnIndex()165 unsigned lastColumnIndex() const { return numEffCols() - 1; }
166
167 void splitColumn(unsigned position, unsigned firstSpan);
168 void appendColumn(unsigned span);
numEffCols()169 unsigned numEffCols() const { return m_columns.size(); }
spanOfEffCol(unsigned effCol)170 unsigned spanOfEffCol(unsigned effCol) const { return m_columns[effCol].span; }
171
colToEffCol(unsigned column)172 unsigned colToEffCol(unsigned column) const
173 {
174 if (!m_hasCellColspanThatDeterminesTableWidth)
175 return column;
176
177 unsigned effColumn = 0;
178 unsigned numColumns = numEffCols();
179 for (unsigned c = 0; effColumn < numColumns && c + m_columns[effColumn].span - 1 < column; ++effColumn)
180 c += m_columns[effColumn].span;
181 return effColumn;
182 }
183
effColToCol(unsigned effCol)184 unsigned effColToCol(unsigned effCol) const
185 {
186 if (!m_hasCellColspanThatDeterminesTableWidth)
187 return effCol;
188
189 unsigned c = 0;
190 for (unsigned i = 0; i < effCol; i++)
191 c += m_columns[i].span;
192 return c;
193 }
194
borderSpacingInRowDirection()195 LayoutUnit borderSpacingInRowDirection() const
196 {
197 if (unsigned effectiveColumnCount = numEffCols())
198 return static_cast<LayoutUnit>(effectiveColumnCount + 1) * hBorderSpacing();
199
200 return 0;
201 }
202
203 // Override paddingStart/End to return pixel values to match behavor of RenderTableCell.
paddingEnd()204 virtual LayoutUnit paddingEnd() const OVERRIDE { return static_cast<int>(RenderBlock::paddingEnd()); }
paddingStart()205 virtual LayoutUnit paddingStart() const OVERRIDE { return static_cast<int>(RenderBlock::paddingStart()); }
206
bordersPaddingAndSpacingInRowDirection()207 LayoutUnit bordersPaddingAndSpacingInRowDirection() const
208 {
209 // 'border-spacing' only applies to separate borders (see 17.6.1 The separated borders model).
210 return borderStart() + borderEnd() + (collapseBorders() ? LayoutUnit() : (paddingStart() + paddingEnd() + borderSpacingInRowDirection()));
211 }
212
213 // Return the first column or column-group.
214 RenderTableCol* firstColumn() const;
215
216 RenderTableCol* colElement(unsigned col, bool* startEdge = 0, bool* endEdge = 0) const
217 {
218 // The common case is to not have columns, make that case fast.
219 if (!m_hasColElements)
220 return 0;
221 return slowColElement(col, startEdge, endEdge);
222 }
223
needsSectionRecalc()224 bool needsSectionRecalc() const { return m_needsSectionRecalc; }
setNeedsSectionRecalc()225 void setNeedsSectionRecalc()
226 {
227 if (documentBeingDestroyed())
228 return;
229 m_needsSectionRecalc = true;
230 setNeedsLayoutAndFullPaintInvalidation();
231 }
232
233 RenderTableSection* sectionAbove(const RenderTableSection*, SkipEmptySectionsValue = DoNotSkipEmptySections) const;
234 RenderTableSection* sectionBelow(const RenderTableSection*, SkipEmptySectionsValue = DoNotSkipEmptySections) const;
235
236 RenderTableCell* cellAbove(const RenderTableCell*) const;
237 RenderTableCell* cellBelow(const RenderTableCell*) const;
238 RenderTableCell* cellBefore(const RenderTableCell*) const;
239 RenderTableCell* cellAfter(const RenderTableCell*) const;
240
241 typedef Vector<CollapsedBorderValue> CollapsedBorderValues;
invalidateCollapsedBorders()242 void invalidateCollapsedBorders()
243 {
244 m_collapsedBordersValid = false;
245 m_collapsedBorders.clear();
246 }
currentBorderValue()247 const CollapsedBorderValue* currentBorderValue() const { return m_currentBorder; }
248
hasSections()249 bool hasSections() const { return m_head || m_foot || m_firstBody; }
250
recalcSectionsIfNeeded()251 void recalcSectionsIfNeeded() const
252 {
253 if (m_needsSectionRecalc)
254 recalcSections();
255 }
256
257 static RenderTable* createAnonymousWithParentRenderer(const RenderObject*);
createAnonymousBoxWithSameTypeAs(const RenderObject * parent)258 virtual RenderBox* createAnonymousBoxWithSameTypeAs(const RenderObject* parent) const OVERRIDE
259 {
260 return createAnonymousWithParentRenderer(parent);
261 }
262
263 const BorderValue& tableStartBorderAdjoiningCell(const RenderTableCell*) const;
264 const BorderValue& tableEndBorderAdjoiningCell(const RenderTableCell*) const;
265
266 void addCaption(const RenderTableCaption*);
267 void removeCaption(const RenderTableCaption*);
268 void addColumn(const RenderTableCol*);
269 void removeColumn(const RenderTableCol*);
270
271 protected:
272 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
273 virtual void simplifiedNormalFlowLayout() OVERRIDE;
274
275 private:
renderName()276 virtual const char* renderName() const OVERRIDE { return "RenderTable"; }
277
isTable()278 virtual bool isTable() const OVERRIDE { return true; }
279
avoidsFloats()280 virtual bool avoidsFloats() const OVERRIDE { return true; }
281
282 virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
283 virtual void paintObject(PaintInfo&, const LayoutPoint&) OVERRIDE;
284 virtual void paintBoxDecorations(PaintInfo&, const LayoutPoint&) OVERRIDE;
285 virtual void paintMask(PaintInfo&, const LayoutPoint&) OVERRIDE;
286 virtual void layout() OVERRIDE;
287 virtual void computeIntrinsicLogicalWidths(LayoutUnit& minWidth, LayoutUnit& maxWidth) const OVERRIDE;
288 virtual void computePreferredLogicalWidths() OVERRIDE;
289 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
290
291 virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const OVERRIDE;
292 virtual int firstLineBoxBaseline() const OVERRIDE;
293 virtual int inlineBlockBaseline(LineDirectionMode) const OVERRIDE;
294
295 RenderTableCol* slowColElement(unsigned col, bool* startEdge, bool* endEdge) const;
296
297 void updateColumnCache() const;
298 void invalidateCachedColumns();
299
300 virtual RenderBlock* firstLineBlock() const OVERRIDE;
301 virtual void updateFirstLetter() OVERRIDE;
302
303 virtual void updateLogicalWidth() OVERRIDE;
304
305 LayoutUnit convertStyleLogicalWidthToComputedWidth(const Length& styleLogicalWidth, LayoutUnit availableWidth);
306 LayoutUnit convertStyleLogicalHeightToComputedHeight(const Length& styleLogicalHeight);
307
308 virtual LayoutRect overflowClipRect(const LayoutPoint& location, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) OVERRIDE;
309
310 virtual void addOverflowFromChildren() OVERRIDE;
311
312 void subtractCaptionRect(LayoutRect&) const;
313
314 void recalcCollapsedBorders();
315 void recalcSections() const;
316 void layoutCaption(RenderTableCaption*);
317
318 void distributeExtraLogicalHeight(int extraLogicalHeight);
319
320 mutable Vector<int> m_columnPos;
321 mutable Vector<ColumnStruct> m_columns;
322 mutable Vector<RenderTableCaption*> m_captions;
323 mutable Vector<RenderTableCol*> m_columnRenderers;
324
325 mutable RenderTableSection* m_head;
326 mutable RenderTableSection* m_foot;
327 mutable RenderTableSection* m_firstBody;
328
329 OwnPtr<TableLayout> m_tableLayout;
330
331 CollapsedBorderValues m_collapsedBorders;
332 const CollapsedBorderValue* m_currentBorder;
333 bool m_collapsedBordersValid : 1;
334
335 mutable bool m_hasColElements : 1;
336 mutable bool m_needsSectionRecalc : 1;
337
338 bool m_columnLogicalWidthChanged : 1;
339 mutable bool m_columnRenderersValid: 1;
340 mutable bool m_hasCellColspanThatDeterminesTableWidth : 1;
hasCellColspanThatDeterminesTableWidth()341 bool hasCellColspanThatDeterminesTableWidth() const
342 {
343 for (unsigned c = 0; c < numEffCols(); c++) {
344 if (m_columns[c].span > 1)
345 return true;
346 }
347 return false;
348 }
349
350 short m_hSpacing;
351 short m_vSpacing;
352 int m_borderStart;
353 int m_borderEnd;
354 };
355
topSection()356 inline RenderTableSection* RenderTable::topSection() const
357 {
358 ASSERT(!needsSectionRecalc());
359 if (m_head)
360 return m_head;
361 if (m_firstBody)
362 return m_firstBody;
363 return m_foot;
364 }
365
366 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderTable, isTable());
367
368 } // namespace WebCore
369
370 #endif // RenderTable_h
371