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, 2008, 2009, 2010 Apple Inc. All rights reserved.
8 * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public License
21 * along with this library; see the file COPYING.LIB. If not, write to
22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 * Boston, MA 02110-1301, USA.
24 */
25
26 #include "config.h"
27 #include "RenderTableSection.h"
28 #include "CachedImage.h"
29 #include "Document.h"
30 #include "HitTestResult.h"
31 #include "HTMLNames.h"
32 #include "PaintInfo.h"
33 #include "RenderTableCell.h"
34 #include "RenderTableCol.h"
35 #include "RenderTableRow.h"
36 #include "RenderView.h"
37 #include <limits>
38 #include <wtf/HashSet.h>
39 #include <wtf/Vector.h>
40 #ifdef ANDROID_LAYOUT
41 #include "Frame.h"
42 #include "Settings.h"
43 #endif
44
45 using namespace std;
46
47 namespace WebCore {
48
49 using namespace HTMLNames;
50
setRowLogicalHeightToRowStyleLogicalHeightIfNotRelative(RenderTableSection::RowStruct * row)51 static inline void setRowLogicalHeightToRowStyleLogicalHeightIfNotRelative(RenderTableSection::RowStruct* row)
52 {
53 ASSERT(row && row->rowRenderer);
54 row->logicalHeight = row->rowRenderer->style()->logicalHeight();
55 if (row->logicalHeight.isRelative())
56 row->logicalHeight = Length();
57 }
58
RenderTableSection(Node * node)59 RenderTableSection::RenderTableSection(Node* node)
60 : RenderBox(node)
61 , m_gridRows(0)
62 , m_cCol(0)
63 , m_cRow(-1)
64 , m_outerBorderStart(0)
65 , m_outerBorderEnd(0)
66 , m_outerBorderBefore(0)
67 , m_outerBorderAfter(0)
68 , m_needsCellRecalc(false)
69 , m_hasOverflowingCell(false)
70 , m_hasMultipleCellLevels(false)
71 {
72 // init RenderObject attributes
73 setInline(false); // our object is not Inline
74 }
75
~RenderTableSection()76 RenderTableSection::~RenderTableSection()
77 {
78 clearGrid();
79 }
80
destroy()81 void RenderTableSection::destroy()
82 {
83 RenderTable* recalcTable = table();
84
85 RenderBox::destroy();
86
87 // recalc cell info because RenderTable has unguarded pointers
88 // stored that point to this RenderTableSection.
89 if (recalcTable)
90 recalcTable->setNeedsSectionRecalc();
91 }
92
addChild(RenderObject * child,RenderObject * beforeChild)93 void RenderTableSection::addChild(RenderObject* child, RenderObject* beforeChild)
94 {
95 // Make sure we don't append things after :after-generated content if we have it.
96 if (!beforeChild && isAfterContent(lastChild()))
97 beforeChild = lastChild();
98
99 if (!child->isTableRow()) {
100 RenderObject* last = beforeChild;
101 if (!last)
102 last = lastChild();
103 if (last && last->isAnonymous()) {
104 if (beforeChild == last)
105 beforeChild = last->firstChild();
106 last->addChild(child, beforeChild);
107 return;
108 }
109
110 // If beforeChild is inside an anonymous cell/row, insert into the cell or into
111 // the anonymous row containing it, if there is one.
112 RenderObject* lastBox = last;
113 while (lastBox && lastBox->parent()->isAnonymous() && !lastBox->isTableRow())
114 lastBox = lastBox->parent();
115 if (lastBox && lastBox->isAnonymous()) {
116 lastBox->addChild(child, beforeChild);
117 return;
118 }
119
120 RenderObject* row = new (renderArena()) RenderTableRow(document() /* anonymous table row */);
121 RefPtr<RenderStyle> newStyle = RenderStyle::create();
122 newStyle->inheritFrom(style());
123 newStyle->setDisplay(TABLE_ROW);
124 row->setStyle(newStyle.release());
125 addChild(row, beforeChild);
126 row->addChild(child);
127 return;
128 }
129
130 if (beforeChild)
131 setNeedsCellRecalc();
132
133 ++m_cRow;
134 m_cCol = 0;
135
136 // make sure we have enough rows
137 if (!ensureRows(m_cRow + 1))
138 return;
139
140 m_grid[m_cRow].rowRenderer = toRenderTableRow(child);
141
142 if (!beforeChild)
143 setRowLogicalHeightToRowStyleLogicalHeightIfNotRelative(&m_grid[m_cRow]);
144
145 // If the next renderer is actually wrapped in an anonymous table row, we need to go up and find that.
146 while (beforeChild && beforeChild->parent() != this)
147 beforeChild = beforeChild->parent();
148
149 ASSERT(!beforeChild || beforeChild->isTableRow());
150 RenderBox::addChild(child, beforeChild);
151 toRenderTableRow(child)->updateBeforeAndAfterContent();
152 }
153
removeChild(RenderObject * oldChild)154 void RenderTableSection::removeChild(RenderObject* oldChild)
155 {
156 setNeedsCellRecalc();
157 RenderBox::removeChild(oldChild);
158 }
159
ensureRows(int numRows)160 bool RenderTableSection::ensureRows(int numRows)
161 {
162 int nRows = m_gridRows;
163 if (numRows > nRows) {
164 if (numRows > static_cast<int>(m_grid.size())) {
165 size_t maxSize = numeric_limits<size_t>::max() / sizeof(RowStruct);
166 if (static_cast<size_t>(numRows) > maxSize)
167 return false;
168 m_grid.grow(numRows);
169 }
170 m_gridRows = numRows;
171 int nCols = max(1, table()->numEffCols());
172 for (int r = nRows; r < numRows; r++) {
173 m_grid[r].row = new Row(nCols);
174 m_grid[r].rowRenderer = 0;
175 m_grid[r].baseline = 0;
176 m_grid[r].logicalHeight = Length();
177 }
178 }
179
180 return true;
181 }
182
addCell(RenderTableCell * cell,RenderTableRow * row)183 void RenderTableSection::addCell(RenderTableCell* cell, RenderTableRow* row)
184 {
185 int rSpan = cell->rowSpan();
186 int cSpan = cell->colSpan();
187 Vector<RenderTable::ColumnStruct>& columns = table()->columns();
188 int nCols = columns.size();
189
190 // ### mozilla still seems to do the old HTML way, even for strict DTD
191 // (see the annotation on table cell layouting in the CSS specs and the testcase below:
192 // <TABLE border>
193 // <TR><TD>1 <TD rowspan="2">2 <TD>3 <TD>4
194 // <TR><TD colspan="2">5
195 // </TABLE>
196 while (m_cCol < nCols && (cellAt(m_cRow, m_cCol).hasCells() || cellAt(m_cRow, m_cCol).inColSpan))
197 m_cCol++;
198
199 if (rSpan == 1) {
200 // we ignore height settings on rowspan cells
201 Length logicalHeight = cell->style()->logicalHeight();
202 if (logicalHeight.isPositive() || (logicalHeight.isRelative() && logicalHeight.value() >= 0)) {
203 Length cRowLogicalHeight = m_grid[m_cRow].logicalHeight;
204 switch (logicalHeight.type()) {
205 case Percent:
206 if (!(cRowLogicalHeight.isPercent()) ||
207 (cRowLogicalHeight.isPercent() && cRowLogicalHeight.percent() < logicalHeight.percent()))
208 m_grid[m_cRow].logicalHeight = logicalHeight;
209 break;
210 case Fixed:
211 if (cRowLogicalHeight.type() < Percent ||
212 (cRowLogicalHeight.isFixed() && cRowLogicalHeight.value() < logicalHeight.value()))
213 m_grid[m_cRow].logicalHeight = logicalHeight;
214 break;
215 case Relative:
216 default:
217 break;
218 }
219 }
220 }
221
222 // make sure we have enough rows
223 if (!ensureRows(m_cRow + rSpan))
224 return;
225
226 m_grid[m_cRow].rowRenderer = row;
227
228 int col = m_cCol;
229 // tell the cell where it is
230 bool inColSpan = false;
231 while (cSpan) {
232 int currentSpan;
233 if (m_cCol >= nCols) {
234 table()->appendColumn(cSpan);
235 currentSpan = cSpan;
236 } else {
237 if (cSpan < (int)columns[m_cCol].span)
238 table()->splitColumn(m_cCol, cSpan);
239 currentSpan = columns[m_cCol].span;
240 }
241 for (int r = 0; r < rSpan; r++) {
242 CellStruct& c = cellAt(m_cRow + r, m_cCol);
243 ASSERT(cell);
244 c.cells.append(cell);
245 // If cells overlap then we take the slow path for painting.
246 if (c.cells.size() > 1)
247 m_hasMultipleCellLevels = true;
248 if (inColSpan)
249 c.inColSpan = true;
250 }
251 m_cCol++;
252 cSpan -= currentSpan;
253 inColSpan = true;
254 }
255 cell->setRow(m_cRow);
256 cell->setCol(table()->effColToCol(col));
257 }
258
setCellLogicalWidths()259 void RenderTableSection::setCellLogicalWidths()
260 {
261 Vector<int>& columnPos = table()->columnPositions();
262
263 LayoutStateMaintainer statePusher(view());
264
265 #ifdef ANDROID_LAYOUT
266 int visibleWidth = 0;
267 if (view()->frameView()) {
268 const Settings* settings = document()->settings();
269 ASSERT(settings);
270 if (settings->layoutAlgorithm() == Settings::kLayoutFitColumnToScreen)
271 visibleWidth = view()->frameView()->textWrapWidth();
272 }
273 #endif
274
275 for (int i = 0; i < m_gridRows; i++) {
276 Row& row = *m_grid[i].row;
277 int cols = row.size();
278 for (int j = 0; j < cols; j++) {
279 CellStruct& current = row[j];
280 RenderTableCell* cell = current.primaryCell();
281 if (!cell || current.inColSpan)
282 continue;
283 int endCol = j;
284 int cspan = cell->colSpan();
285 while (cspan && endCol < cols) {
286 ASSERT(endCol < (int)table()->columns().size());
287 cspan -= table()->columns()[endCol].span;
288 endCol++;
289 }
290 int w = columnPos[endCol] - columnPos[j] - table()->hBorderSpacing();
291 #ifdef ANDROID_LAYOUT
292 if (table()->isSingleColumn()) {
293 int b = table()->collapseBorders() ?
294 0 : table()->paddingLeft() + table()->paddingRight() + 2 * table()->hBorderSpacing();
295 w = table()->width() - (table()->borderLeft() + table()->borderRight() + b);
296 }
297 #endif
298 int oldLogicalWidth = cell->logicalWidth();
299 #ifdef ANDROID_LAYOUT
300 if (w != oldLogicalWidth || (visibleWidth > 0 && visibleWidth != cell->getVisibleWidth())) {
301 #else
302 if (w != oldLogicalWidth) {
303 #endif
304 cell->setNeedsLayout(true);
305 if (!table()->selfNeedsLayout() && cell->checkForRepaintDuringLayout()) {
306 if (!statePusher.didPush()) {
307 // Technically, we should also push state for the row, but since
308 // rows don't push a coordinate transform, that's not necessary.
309 statePusher.push(this, IntSize(x(), y()));
310 }
311 cell->repaint();
312 }
313 #ifdef ANDROID_LAYOUT
314 if (w != oldLogicalWidth)
315 #endif
316 cell->updateLogicalWidth(w);
317 }
318 }
319 }
320
321 statePusher.pop(); // only pops if we pushed
322 }
323
324 int RenderTableSection::calcRowLogicalHeight()
325 {
326 #ifndef NDEBUG
327 setNeedsLayoutIsForbidden(true);
328 #endif
329
330 ASSERT(!needsLayout());
331 #ifdef ANDROID_LAYOUT
332 if (table()->isSingleColumn()) {
333 int height = 0;
334 int spacing = table()->vBorderSpacing();
335 for (int r = 0; r < m_gridRows; r++)
336 height += m_grid[r].logicalHeight.calcMinValue(0) + (m_grid[r].rowRenderer ? spacing : 0);
337 return height;
338 }
339 #endif
340
341 RenderTableCell* cell;
342
343 int spacing = table()->vBorderSpacing();
344
345 LayoutStateMaintainer statePusher(view());
346
347 m_rowPos.resize(m_gridRows + 1);
348 m_rowPos[0] = spacing;
349
350 for (int r = 0; r < m_gridRows; r++) {
351 m_rowPos[r + 1] = 0;
352 m_grid[r].baseline = 0;
353 int baseline = 0;
354 int bdesc = 0;
355 int ch = m_grid[r].logicalHeight.calcMinValue(0);
356 int pos = m_rowPos[r] + ch + (m_grid[r].rowRenderer ? spacing : 0);
357
358 m_rowPos[r + 1] = max(m_rowPos[r + 1], pos);
359
360 Row* row = m_grid[r].row;
361 int totalCols = row->size();
362
363 for (int c = 0; c < totalCols; c++) {
364 CellStruct& current = cellAt(r, c);
365 cell = current.primaryCell();
366
367 if (!cell || current.inColSpan)
368 continue;
369
370 if ((cell->row() + cell->rowSpan() - 1) > r)
371 continue;
372
373 int indx = max(r - cell->rowSpan() + 1, 0);
374
375 if (cell->overrideSize() != -1) {
376 if (!statePusher.didPush()) {
377 // Technically, we should also push state for the row, but since
378 // rows don't push a coordinate transform, that's not necessary.
379 statePusher.push(this, IntSize(x(), y()));
380 }
381 cell->setOverrideSize(-1);
382 cell->setChildNeedsLayout(true, false);
383 cell->layoutIfNeeded();
384 }
385
386 int adjustedPaddingBefore = cell->paddingBefore() - cell->intrinsicPaddingBefore();
387 int adjustedPaddingAfter = cell->paddingAfter() - cell->intrinsicPaddingAfter();
388 int adjustedLogicalHeight = cell->logicalHeight() - (cell->intrinsicPaddingBefore() + cell->intrinsicPaddingAfter());
389
390 // Explicit heights use the border box in quirks mode. In strict mode do the right
391 // thing and actually add in the border and padding.
392 ch = cell->style()->logicalHeight().calcValue(0) +
393 (document()->inQuirksMode() ? 0 : (adjustedPaddingBefore + adjustedPaddingAfter +
394 cell->borderBefore() + cell->borderAfter()));
395 ch = max(ch, adjustedLogicalHeight);
396
397 pos = m_rowPos[indx] + ch + (m_grid[r].rowRenderer ? spacing : 0);
398
399 m_rowPos[r + 1] = max(m_rowPos[r + 1], pos);
400
401 // find out the baseline
402 EVerticalAlign va = cell->style()->verticalAlign();
403 if (va == BASELINE || va == TEXT_BOTTOM || va == TEXT_TOP || va == SUPER || va == SUB) {
404 int b = cell->cellBaselinePosition();
405 if (b > cell->borderBefore() + cell->paddingBefore()) {
406 baseline = max(baseline, b - cell->intrinsicPaddingBefore());
407 bdesc = max(bdesc, m_rowPos[indx] + ch - (b - cell->intrinsicPaddingBefore()));
408 }
409 }
410 }
411
412 // do we have baseline aligned elements?
413 if (baseline) {
414 // increase rowheight if baseline requires
415 m_rowPos[r + 1] = max(m_rowPos[r + 1], baseline + bdesc + (m_grid[r].rowRenderer ? spacing : 0));
416 m_grid[r].baseline = baseline;
417 }
418
419 m_rowPos[r + 1] = max(m_rowPos[r + 1], m_rowPos[r]);
420 }
421
422 #ifndef NDEBUG
423 setNeedsLayoutIsForbidden(false);
424 #endif
425
426 ASSERT(!needsLayout());
427
428 statePusher.pop();
429
430 return m_rowPos[m_gridRows];
431 }
432
433 void RenderTableSection::layout()
434 {
435 ASSERT(needsLayout());
436
437 LayoutStateMaintainer statePusher(view(), this, IntSize(x(), y()), style()->isFlippedBlocksWritingMode());
438 for (RenderObject* child = children()->firstChild(); child; child = child->nextSibling()) {
439 if (child->isTableRow()) {
440 child->layoutIfNeeded();
441 ASSERT(!child->needsLayout());
442 }
443 }
444 statePusher.pop();
445 setNeedsLayout(false);
446 }
447
448 int RenderTableSection::layoutRows(int toAdd)
449 {
450 #ifndef NDEBUG
451 setNeedsLayoutIsForbidden(true);
452 #endif
453
454 ASSERT(!needsLayout());
455 #ifdef ANDROID_LAYOUT
456 if (table()->isSingleColumn()) {
457 int totalRows = m_gridRows;
458 int hspacing = table()->hBorderSpacing();
459 int vspacing = table()->vBorderSpacing();
460 int rHeight = vspacing;
461
462 int leftOffset = hspacing;
463
464 int nEffCols = table()->numEffCols();
465 for (int r = 0; r < totalRows; r++) {
466 for (int c = 0; c < nEffCols; c++) {
467 CellStruct current = cellAt(r, c);
468 RenderTableCell* cell = current.primaryCell();
469
470 if (!cell || current.inColSpan)
471 continue;
472 if (r > 0 && (primaryCellAt(r-1, c) == cell))
473 continue;
474
475 // cell->setCellTopExtra(0);
476 // cell->setCellBottomExtra(0);
477
478 int oldCellX = cell->x();
479 int oldCellY = cell->y();
480
481 if (style()->direction() == RTL) {
482 cell->setX(table()->width());
483 cell->setY(rHeight);
484 } else {
485 cell->setX(leftOffset);
486 cell->setY(rHeight);
487 }
488
489 // If the cell moved, we have to repaint it as well as any floating/positioned
490 // descendants. An exception is if we need a layout. In this case, we know we're going to
491 // repaint ourselves (and the cell) anyway.
492 if (!table()->selfNeedsLayout() && cell->checkForRepaintDuringLayout()) {
493 // IntRect cellRect(oldCellX, oldCellY - cell->borderTopExtra() , cell->width(), cell->height());
494 IntRect cellRect(oldCellX, oldCellY, cell->width(), cell->height());
495 cell->repaintDuringLayoutIfMoved(cellRect);
496 }
497 rHeight += cell->height() + vspacing;
498 }
499 }
500
501 setHeight(rHeight);
502 return height();
503 }
504 #endif
505
506 int rHeight;
507 int rindx;
508 int totalRows = m_gridRows;
509
510 // Set the width of our section now. The rows will also be this width.
511 setLogicalWidth(table()->contentLogicalWidth());
512 m_overflow.clear();
513 m_hasOverflowingCell = false;
514
515 if (toAdd && totalRows && (m_rowPos[totalRows] || !nextSibling())) {
516 int totalHeight = m_rowPos[totalRows] + toAdd;
517
518 int dh = toAdd;
519 int totalPercent = 0;
520 int numAuto = 0;
521 for (int r = 0; r < totalRows; r++) {
522 if (m_grid[r].logicalHeight.isAuto())
523 numAuto++;
524 else if (m_grid[r].logicalHeight.isPercent())
525 totalPercent += m_grid[r].logicalHeight.percent();
526 }
527 if (totalPercent) {
528 // try to satisfy percent
529 int add = 0;
530 totalPercent = min(totalPercent, 100);
531 int rh = m_rowPos[1] - m_rowPos[0];
532 for (int r = 0; r < totalRows; r++) {
533 if (totalPercent > 0 && m_grid[r].logicalHeight.isPercent()) {
534 int toAdd = min(dh, static_cast<int>((totalHeight * m_grid[r].logicalHeight.percent() / 100) - rh));
535 // If toAdd is negative, then we don't want to shrink the row (this bug
536 // affected Outlook Web Access).
537 toAdd = max(0, toAdd);
538 add += toAdd;
539 dh -= toAdd;
540 totalPercent -= m_grid[r].logicalHeight.percent();
541 }
542 if (r < totalRows - 1)
543 rh = m_rowPos[r + 2] - m_rowPos[r + 1];
544 m_rowPos[r + 1] += add;
545 }
546 }
547 if (numAuto) {
548 // distribute over variable cols
549 int add = 0;
550 for (int r = 0; r < totalRows; r++) {
551 if (numAuto > 0 && m_grid[r].logicalHeight.isAuto()) {
552 int toAdd = dh / numAuto;
553 add += toAdd;
554 dh -= toAdd;
555 numAuto--;
556 }
557 m_rowPos[r + 1] += add;
558 }
559 }
560 if (dh > 0 && m_rowPos[totalRows]) {
561 // if some left overs, distribute equally.
562 int tot = m_rowPos[totalRows];
563 int add = 0;
564 int prev = m_rowPos[0];
565 for (int r = 0; r < totalRows; r++) {
566 // weight with the original height
567 add += dh * (m_rowPos[r + 1] - prev) / tot;
568 prev = m_rowPos[r + 1];
569 m_rowPos[r + 1] += add;
570 }
571 }
572 }
573
574 int hspacing = table()->hBorderSpacing();
575 int vspacing = table()->vBorderSpacing();
576 int nEffCols = table()->numEffCols();
577
578 LayoutStateMaintainer statePusher(view(), this, IntSize(x(), y()), style()->isFlippedBlocksWritingMode());
579
580 for (int r = 0; r < totalRows; r++) {
581 // Set the row's x/y position and width/height.
582 if (RenderTableRow* rowRenderer = m_grid[r].rowRenderer) {
583 rowRenderer->setLocation(0, m_rowPos[r]);
584 rowRenderer->setLogicalWidth(logicalWidth());
585 rowRenderer->setLogicalHeight(m_rowPos[r + 1] - m_rowPos[r] - vspacing);
586 rowRenderer->updateLayerTransform();
587 }
588
589 for (int c = 0; c < nEffCols; c++) {
590 CellStruct& cs = cellAt(r, c);
591 RenderTableCell* cell = cs.primaryCell();
592
593 if (!cell || cs.inColSpan)
594 continue;
595
596 rindx = cell->row();
597 rHeight = m_rowPos[rindx + cell->rowSpan()] - m_rowPos[rindx] - vspacing;
598
599 // Force percent height children to lay themselves out again.
600 // This will cause these children to grow to fill the cell.
601 // FIXME: There is still more work to do here to fully match WinIE (should
602 // it become necessary to do so). In quirks mode, WinIE behaves like we
603 // do, but it will clip the cells that spill out of the table section. In
604 // strict mode, Mozilla and WinIE both regrow the table to accommodate the
605 // new height of the cell (thus letting the percentages cause growth one
606 // time only). We may also not be handling row-spanning cells correctly.
607 //
608 // Note also the oddity where replaced elements always flex, and yet blocks/tables do
609 // not necessarily flex. WinIE is crazy and inconsistent, and we can't hope to
610 // match the behavior perfectly, but we'll continue to refine it as we discover new
611 // bugs. :)
612 bool cellChildrenFlex = false;
613 bool flexAllChildren = cell->style()->logicalHeight().isFixed()
614 || (!table()->style()->logicalHeight().isAuto() && rHeight != cell->logicalHeight());
615
616 for (RenderObject* o = cell->firstChild(); o; o = o->nextSibling()) {
617 if (!o->isText() && o->style()->logicalHeight().isPercent() && (flexAllChildren || o->isReplaced() || (o->isBox() && toRenderBox(o)->scrollsOverflow()))) {
618 // Tables with no sections do not flex.
619 if (!o->isTable() || toRenderTable(o)->hasSections()) {
620 o->setNeedsLayout(true, false);
621 cellChildrenFlex = true;
622 }
623 }
624 }
625
626 if (HashSet<RenderBox*>* percentHeightDescendants = cell->percentHeightDescendants()) {
627 HashSet<RenderBox*>::iterator end = percentHeightDescendants->end();
628 for (HashSet<RenderBox*>::iterator it = percentHeightDescendants->begin(); it != end; ++it) {
629 RenderBox* box = *it;
630 if (!box->isReplaced() && !box->scrollsOverflow() && !flexAllChildren)
631 continue;
632
633 while (box != cell) {
634 if (box->normalChildNeedsLayout())
635 break;
636 box->setChildNeedsLayout(true, false);
637 box = box->containingBlock();
638 ASSERT(box);
639 if (!box)
640 break;
641 }
642 cellChildrenFlex = true;
643 }
644 }
645
646 if (cellChildrenFlex) {
647 cell->setChildNeedsLayout(true, false);
648 // Alignment within a cell is based off the calculated
649 // height, which becomes irrelevant once the cell has
650 // been resized based off its percentage.
651 cell->setOverrideSizeFromRowHeight(rHeight);
652 cell->layoutIfNeeded();
653
654 // If the baseline moved, we may have to update the data for our row. Find out the new baseline.
655 EVerticalAlign va = cell->style()->verticalAlign();
656 if (va == BASELINE || va == TEXT_BOTTOM || va == TEXT_TOP || va == SUPER || va == SUB) {
657 int b = cell->cellBaselinePosition();
658 if (b > cell->borderBefore() + cell->paddingBefore())
659 m_grid[r].baseline = max(m_grid[r].baseline, b);
660 }
661 }
662
663 int oldIntrinsicPaddingBefore = cell->intrinsicPaddingBefore();
664 int oldIntrinsicPaddingAfter = cell->intrinsicPaddingAfter();
665 int logicalHeightWithoutIntrinsicPadding = cell->logicalHeight() - oldIntrinsicPaddingBefore - oldIntrinsicPaddingAfter;
666
667 int intrinsicPaddingBefore = 0;
668 switch (cell->style()->verticalAlign()) {
669 case SUB:
670 case SUPER:
671 case TEXT_TOP:
672 case TEXT_BOTTOM:
673 case BASELINE: {
674 int b = cell->cellBaselinePosition();
675 if (b > cell->borderBefore() + cell->paddingBefore())
676 intrinsicPaddingBefore = getBaseline(r) - (b - oldIntrinsicPaddingBefore);
677 break;
678 }
679 case TOP:
680 break;
681 case MIDDLE:
682 intrinsicPaddingBefore = (rHeight - logicalHeightWithoutIntrinsicPadding) / 2;
683 break;
684 case BOTTOM:
685 intrinsicPaddingBefore = rHeight - logicalHeightWithoutIntrinsicPadding;
686 break;
687 default:
688 break;
689 }
690
691 int intrinsicPaddingAfter = rHeight - logicalHeightWithoutIntrinsicPadding - intrinsicPaddingBefore;
692 cell->setIntrinsicPaddingBefore(intrinsicPaddingBefore);
693 cell->setIntrinsicPaddingAfter(intrinsicPaddingAfter);
694
695 IntRect oldCellRect(cell->x(), cell->y() , cell->width(), cell->height());
696
697 if (!style()->isLeftToRightDirection())
698 cell->setLogicalLocation(table()->columnPositions()[nEffCols] - table()->columnPositions()[table()->colToEffCol(cell->col() + cell->colSpan())] + hspacing, m_rowPos[rindx]);
699 else
700 cell->setLogicalLocation(table()->columnPositions()[c] + hspacing, m_rowPos[rindx]);
701 view()->addLayoutDelta(IntSize(oldCellRect.x() - cell->x(), oldCellRect.y() - cell->y()));
702
703 if (intrinsicPaddingBefore != oldIntrinsicPaddingBefore || intrinsicPaddingAfter != oldIntrinsicPaddingAfter)
704 cell->setNeedsLayout(true, false);
705
706 if (!cell->needsLayout() && view()->layoutState()->pageLogicalHeight() && view()->layoutState()->pageLogicalOffset(cell->logicalTop()) != cell->pageLogicalOffset())
707 cell->setChildNeedsLayout(true, false);
708
709 cell->layoutIfNeeded();
710
711 // FIXME: Make pagination work with vertical tables.
712 if (style()->isHorizontalWritingMode() && view()->layoutState()->pageLogicalHeight() && cell->height() != rHeight)
713 cell->setHeight(rHeight); // FIXME: Pagination might have made us change size. For now just shrink or grow the cell to fit without doing a relayout.
714
715 IntSize childOffset(cell->x() - oldCellRect.x(), cell->y() - oldCellRect.y());
716 if (childOffset.width() || childOffset.height()) {
717 view()->addLayoutDelta(childOffset);
718
719 // If the child moved, we have to repaint it as well as any floating/positioned
720 // descendants. An exception is if we need a layout. In this case, we know we're going to
721 // repaint ourselves (and the child) anyway.
722 if (!table()->selfNeedsLayout() && cell->checkForRepaintDuringLayout())
723 cell->repaintDuringLayoutIfMoved(oldCellRect);
724 }
725 }
726 }
727
728 #ifndef NDEBUG
729 setNeedsLayoutIsForbidden(false);
730 #endif
731
732 ASSERT(!needsLayout());
733
734 setLogicalHeight(m_rowPos[totalRows]);
735
736 // Now that our height has been determined, add in overflow from cells.
737 for (int r = 0; r < totalRows; r++) {
738 for (int c = 0; c < nEffCols; c++) {
739 CellStruct& cs = cellAt(r, c);
740 RenderTableCell* cell = cs.primaryCell();
741 if (!cell || cs.inColSpan)
742 continue;
743 if (r < totalRows - 1 && cell == primaryCellAt(r + 1, c))
744 continue;
745 addOverflowFromChild(cell);
746 m_hasOverflowingCell |= cell->hasVisualOverflow();
747 }
748 }
749
750 statePusher.pop();
751 return height();
752 }
753
754 int RenderTableSection::calcOuterBorderBefore() const
755 {
756 int totalCols = table()->numEffCols();
757 if (!m_gridRows || !totalCols)
758 return 0;
759
760 unsigned borderWidth = 0;
761
762 const BorderValue& sb = style()->borderBefore();
763 if (sb.style() == BHIDDEN)
764 return -1;
765 if (sb.style() > BHIDDEN)
766 borderWidth = sb.width();
767
768 const BorderValue& rb = firstChild()->style()->borderBefore();
769 if (rb.style() == BHIDDEN)
770 return -1;
771 if (rb.style() > BHIDDEN && rb.width() > borderWidth)
772 borderWidth = rb.width();
773
774 bool allHidden = true;
775 for (int c = 0; c < totalCols; c++) {
776 const CellStruct& current = cellAt(0, c);
777 if (current.inColSpan || !current.hasCells())
778 continue;
779 const BorderValue& cb = current.primaryCell()->style()->borderBefore(); // FIXME: Make this work with perpendicular and flipped cells.
780 // FIXME: Don't repeat for the same col group
781 RenderTableCol* colGroup = table()->colElement(c);
782 if (colGroup) {
783 const BorderValue& gb = colGroup->style()->borderBefore();
784 if (gb.style() == BHIDDEN || cb.style() == BHIDDEN)
785 continue;
786 allHidden = false;
787 if (gb.style() > BHIDDEN && gb.width() > borderWidth)
788 borderWidth = gb.width();
789 if (cb.style() > BHIDDEN && cb.width() > borderWidth)
790 borderWidth = cb.width();
791 } else {
792 if (cb.style() == BHIDDEN)
793 continue;
794 allHidden = false;
795 if (cb.style() > BHIDDEN && cb.width() > borderWidth)
796 borderWidth = cb.width();
797 }
798 }
799 if (allHidden)
800 return -1;
801
802 return borderWidth / 2;
803 }
804
805 int RenderTableSection::calcOuterBorderAfter() const
806 {
807 int totalCols = table()->numEffCols();
808 if (!m_gridRows || !totalCols)
809 return 0;
810
811 unsigned borderWidth = 0;
812
813 const BorderValue& sb = style()->borderAfter();
814 if (sb.style() == BHIDDEN)
815 return -1;
816 if (sb.style() > BHIDDEN)
817 borderWidth = sb.width();
818
819 const BorderValue& rb = lastChild()->style()->borderAfter();
820 if (rb.style() == BHIDDEN)
821 return -1;
822 if (rb.style() > BHIDDEN && rb.width() > borderWidth)
823 borderWidth = rb.width();
824
825 bool allHidden = true;
826 for (int c = 0; c < totalCols; c++) {
827 const CellStruct& current = cellAt(m_gridRows - 1, c);
828 if (current.inColSpan || !current.hasCells())
829 continue;
830 const BorderValue& cb = current.primaryCell()->style()->borderAfter(); // FIXME: Make this work with perpendicular and flipped cells.
831 // FIXME: Don't repeat for the same col group
832 RenderTableCol* colGroup = table()->colElement(c);
833 if (colGroup) {
834 const BorderValue& gb = colGroup->style()->borderAfter();
835 if (gb.style() == BHIDDEN || cb.style() == BHIDDEN)
836 continue;
837 allHidden = false;
838 if (gb.style() > BHIDDEN && gb.width() > borderWidth)
839 borderWidth = gb.width();
840 if (cb.style() > BHIDDEN && cb.width() > borderWidth)
841 borderWidth = cb.width();
842 } else {
843 if (cb.style() == BHIDDEN)
844 continue;
845 allHidden = false;
846 if (cb.style() > BHIDDEN && cb.width() > borderWidth)
847 borderWidth = cb.width();
848 }
849 }
850 if (allHidden)
851 return -1;
852
853 return (borderWidth + 1) / 2;
854 }
855
856 int RenderTableSection::calcOuterBorderStart() const
857 {
858 int totalCols = table()->numEffCols();
859 if (!m_gridRows || !totalCols)
860 return 0;
861
862 unsigned borderWidth = 0;
863
864 const BorderValue& sb = style()->borderStart();
865 if (sb.style() == BHIDDEN)
866 return -1;
867 if (sb.style() > BHIDDEN)
868 borderWidth = sb.width();
869
870 if (RenderTableCol* colGroup = table()->colElement(0)) {
871 const BorderValue& gb = colGroup->style()->borderStart();
872 if (gb.style() == BHIDDEN)
873 return -1;
874 if (gb.style() > BHIDDEN && gb.width() > borderWidth)
875 borderWidth = gb.width();
876 }
877
878 bool allHidden = true;
879 for (int r = 0; r < m_gridRows; r++) {
880 const CellStruct& current = cellAt(r, 0);
881 if (!current.hasCells())
882 continue;
883 // FIXME: Don't repeat for the same cell
884 const BorderValue& cb = current.primaryCell()->style()->borderStart(); // FIXME: Make this work with perpendicular and flipped cells.
885 const BorderValue& rb = current.primaryCell()->parent()->style()->borderStart();
886 if (cb.style() == BHIDDEN || rb.style() == BHIDDEN)
887 continue;
888 allHidden = false;
889 if (cb.style() > BHIDDEN && cb.width() > borderWidth)
890 borderWidth = cb.width();
891 if (rb.style() > BHIDDEN && rb.width() > borderWidth)
892 borderWidth = rb.width();
893 }
894 if (allHidden)
895 return -1;
896
897 return (borderWidth + (table()->style()->isLeftToRightDirection() ? 0 : 1)) / 2;
898 }
899
900 int RenderTableSection::calcOuterBorderEnd() const
901 {
902 int totalCols = table()->numEffCols();
903 if (!m_gridRows || !totalCols)
904 return 0;
905
906 unsigned borderWidth = 0;
907
908 const BorderValue& sb = style()->borderEnd();
909 if (sb.style() == BHIDDEN)
910 return -1;
911 if (sb.style() > BHIDDEN)
912 borderWidth = sb.width();
913
914 if (RenderTableCol* colGroup = table()->colElement(totalCols - 1)) {
915 const BorderValue& gb = colGroup->style()->borderEnd();
916 if (gb.style() == BHIDDEN)
917 return -1;
918 if (gb.style() > BHIDDEN && gb.width() > borderWidth)
919 borderWidth = gb.width();
920 }
921
922 bool allHidden = true;
923 for (int r = 0; r < m_gridRows; r++) {
924 const CellStruct& current = cellAt(r, totalCols - 1);
925 if (!current.hasCells())
926 continue;
927 // FIXME: Don't repeat for the same cell
928 const BorderValue& cb = current.primaryCell()->style()->borderEnd(); // FIXME: Make this work with perpendicular and flipped cells.
929 const BorderValue& rb = current.primaryCell()->parent()->style()->borderEnd();
930 if (cb.style() == BHIDDEN || rb.style() == BHIDDEN)
931 continue;
932 allHidden = false;
933 if (cb.style() > BHIDDEN && cb.width() > borderWidth)
934 borderWidth = cb.width();
935 if (rb.style() > BHIDDEN && rb.width() > borderWidth)
936 borderWidth = rb.width();
937 }
938 if (allHidden)
939 return -1;
940
941 return (borderWidth + (table()->style()->isLeftToRightDirection() ? 1 : 0)) / 2;
942 }
943
944 void RenderTableSection::recalcOuterBorder()
945 {
946 m_outerBorderBefore = calcOuterBorderBefore();
947 m_outerBorderAfter = calcOuterBorderAfter();
948 m_outerBorderStart = calcOuterBorderStart();
949 m_outerBorderEnd = calcOuterBorderEnd();
950 }
951
952 int RenderTableSection::firstLineBoxBaseline() const
953 {
954 if (!m_gridRows)
955 return -1;
956
957 int firstLineBaseline = m_grid[0].baseline;
958 if (firstLineBaseline)
959 return firstLineBaseline + m_rowPos[0];
960
961 firstLineBaseline = -1;
962 Row* firstRow = m_grid[0].row;
963 for (size_t i = 0; i < firstRow->size(); ++i) {
964 CellStruct& cs = firstRow->at(i);
965 RenderTableCell* cell = cs.primaryCell();
966 if (cell)
967 firstLineBaseline = max(firstLineBaseline, cell->logicalTop() + cell->paddingBefore() + cell->borderBefore() + cell->contentLogicalHeight());
968 }
969
970 return firstLineBaseline;
971 }
972
973 void RenderTableSection::paint(PaintInfo& paintInfo, int tx, int ty)
974 {
975 // put this back in when all layout tests can handle it
976 // ASSERT(!needsLayout());
977 // avoid crashing on bugs that cause us to paint with dirty layout
978 if (needsLayout())
979 return;
980
981 unsigned totalRows = m_gridRows;
982 unsigned totalCols = table()->columns().size();
983
984 if (!totalRows || !totalCols)
985 return;
986
987 tx += x();
988 ty += y();
989
990 PaintPhase phase = paintInfo.phase;
991 bool pushedClip = pushContentsClip(paintInfo, tx, ty);
992 paintObject(paintInfo, tx, ty);
993 if (pushedClip)
994 popContentsClip(paintInfo, phase, tx, ty);
995 }
996
997 static inline bool compareCellPositions(RenderTableCell* elem1, RenderTableCell* elem2)
998 {
999 return elem1->row() < elem2->row();
1000 }
1001
1002 void RenderTableSection::paintCell(RenderTableCell* cell, PaintInfo& paintInfo, int tx, int ty)
1003 {
1004 IntPoint cellPoint = flipForWritingMode(cell, IntPoint(tx, ty), ParentToChildFlippingAdjustment);
1005 PaintPhase paintPhase = paintInfo.phase;
1006 RenderTableRow* row = toRenderTableRow(cell->parent());
1007
1008 if (paintPhase == PaintPhaseBlockBackground || paintPhase == PaintPhaseChildBlockBackground) {
1009 // We need to handle painting a stack of backgrounds. This stack (from bottom to top) consists of
1010 // the column group, column, row group, row, and then the cell.
1011 RenderObject* col = table()->colElement(cell->col());
1012 RenderObject* colGroup = 0;
1013 if (col && col->parent()->style()->display() == TABLE_COLUMN_GROUP)
1014 colGroup = col->parent();
1015
1016 // Column groups and columns first.
1017 // FIXME: Columns and column groups do not currently support opacity, and they are being painted "too late" in
1018 // the stack, since we have already opened a transparency layer (potentially) for the table row group.
1019 // Note that we deliberately ignore whether or not the cell has a layer, since these backgrounds paint "behind" the
1020 // cell.
1021 cell->paintBackgroundsBehindCell(paintInfo, cellPoint.x(), cellPoint.y(), colGroup);
1022 cell->paintBackgroundsBehindCell(paintInfo, cellPoint.x(), cellPoint.y(), col);
1023
1024 // Paint the row group next.
1025 cell->paintBackgroundsBehindCell(paintInfo, cellPoint.x(), cellPoint.y(), this);
1026
1027 // Paint the row next, but only if it doesn't have a layer. If a row has a layer, it will be responsible for
1028 // painting the row background for the cell.
1029 if (!row->hasSelfPaintingLayer())
1030 cell->paintBackgroundsBehindCell(paintInfo, cellPoint.x(), cellPoint.y(), row);
1031 }
1032 if ((!cell->hasSelfPaintingLayer() && !row->hasSelfPaintingLayer()) || paintInfo.phase == PaintPhaseCollapsedTableBorders)
1033 cell->paint(paintInfo, cellPoint.x(), cellPoint.y());
1034 }
1035
1036 void RenderTableSection::paintObject(PaintInfo& paintInfo, int tx, int ty)
1037 {
1038 // Check which rows and cols are visible and only paint these.
1039 // FIXME: Could use a binary search here.
1040 unsigned totalRows = m_gridRows;
1041 unsigned totalCols = table()->columns().size();
1042
1043 PaintPhase paintPhase = paintInfo.phase;
1044
1045 #ifdef ANDROID_LAYOUT
1046 unsigned int startrow = 0;
1047 unsigned int endrow = totalRows;
1048 unsigned int startcol = 0;
1049 unsigned int endcol = totalCols;
1050 if (table()->isSingleColumn()) {
1051 // FIXME: should we be smarter too?
1052 } else {
1053 // FIXME: possible to rollback to the common tree.
1054 // rowPos size is set in calcRowHeight(), which is called from table layout().
1055 // BUT RenderTableSection is init through parsing. On a slow device, paint() as
1056 // the result of layout() can come after the next parse() as everything is triggered
1057 // by timer. So we have to check rowPos before using it.
1058 if (m_rowPos.size() != (totalRows + 1))
1059 return;
1060 #endif
1061
1062 int os = 2 * maximalOutlineSize(paintPhase);
1063 unsigned startrow = 0;
1064 unsigned endrow = totalRows;
1065
1066 IntRect localRepaintRect = paintInfo.rect;
1067 localRepaintRect.move(-tx, -ty);
1068 if (style()->isFlippedBlocksWritingMode()) {
1069 if (style()->isHorizontalWritingMode())
1070 localRepaintRect.setY(height() - localRepaintRect.maxY());
1071 else
1072 localRepaintRect.setX(width() - localRepaintRect.maxX());
1073 }
1074
1075 // If some cell overflows, just paint all of them.
1076 if (!m_hasOverflowingCell) {
1077 int before = (style()->isHorizontalWritingMode() ? localRepaintRect.y() : localRepaintRect.x()) - os;
1078 // binary search to find a row
1079 startrow = std::lower_bound(m_rowPos.begin(), m_rowPos.end(), before) - m_rowPos.begin();
1080
1081 // The binary search above gives us the first row with
1082 // a y position >= the top of the paint rect. Thus, the previous
1083 // may need to be repainted as well.
1084 if (startrow == m_rowPos.size() || (startrow > 0 && (m_rowPos[startrow] > before)))
1085 --startrow;
1086
1087 int after = (style()->isHorizontalWritingMode() ? localRepaintRect.maxY() : localRepaintRect.maxX()) + os;
1088 endrow = std::lower_bound(m_rowPos.begin(), m_rowPos.end(), after) - m_rowPos.begin();
1089 if (endrow == m_rowPos.size())
1090 --endrow;
1091
1092 if (!endrow && m_rowPos[0] - table()->outerBorderBefore() <= after)
1093 ++endrow;
1094 }
1095
1096 unsigned startcol = 0;
1097 unsigned endcol = totalCols;
1098 // FIXME: Implement RTL.
1099 if (!m_hasOverflowingCell && style()->isLeftToRightDirection()) {
1100 int start = (style()->isHorizontalWritingMode() ? localRepaintRect.x() : localRepaintRect.y()) - os;
1101 Vector<int>& columnPos = table()->columnPositions();
1102 startcol = std::lower_bound(columnPos.begin(), columnPos.end(), start) - columnPos.begin();
1103 if ((startcol == columnPos.size()) || (startcol > 0 && (columnPos[startcol] > start)))
1104 --startcol;
1105
1106 int end = (style()->isHorizontalWritingMode() ? localRepaintRect.maxX() : localRepaintRect.maxY()) + os;
1107 endcol = std::lower_bound(columnPos.begin(), columnPos.end(), end) - columnPos.begin();
1108 if (endcol == columnPos.size())
1109 --endcol;
1110
1111 if (!endcol && columnPos[0] - table()->outerBorderStart() <= end)
1112 ++endcol;
1113 }
1114
1115 #ifdef ANDROID_LAYOUT
1116 }
1117 #endif
1118
1119 if (startcol < endcol) {
1120 if (!m_hasMultipleCellLevels) {
1121 // Draw the dirty cells in the order that they appear.
1122 for (unsigned r = startrow; r < endrow; r++) {
1123 for (unsigned c = startcol; c < endcol; c++) {
1124 CellStruct& current = cellAt(r, c);
1125 RenderTableCell* cell = current.primaryCell();
1126 if (!cell || (r > startrow && primaryCellAt(r - 1, c) == cell) || (c > startcol && primaryCellAt(r, c - 1) == cell))
1127 continue;
1128 paintCell(cell, paintInfo, tx, ty);
1129 }
1130 }
1131 } else {
1132 // Draw the cells in the correct paint order.
1133 Vector<RenderTableCell*> cells;
1134 HashSet<RenderTableCell*> spanningCells;
1135 for (unsigned r = startrow; r < endrow; r++) {
1136 for (unsigned c = startcol; c < endcol; c++) {
1137 CellStruct& current = cellAt(r, c);
1138 if (!current.hasCells())
1139 continue;
1140 for (unsigned i = 0; i < current.cells.size(); ++i) {
1141 if (current.cells[i]->rowSpan() > 1 || current.cells[i]->colSpan() > 1) {
1142 if (spanningCells.contains(current.cells[i]))
1143 continue;
1144 spanningCells.add(current.cells[i]);
1145 }
1146 cells.append(current.cells[i]);
1147 }
1148 }
1149 }
1150 // Sort the dirty cells by paint order.
1151 std::stable_sort(cells.begin(), cells.end(), compareCellPositions);
1152 int size = cells.size();
1153 // Paint the cells.
1154 for (int i = 0; i < size; ++i)
1155 paintCell(cells[i], paintInfo, tx, ty);
1156 }
1157 }
1158 }
1159
1160 void RenderTableSection::imageChanged(WrappedImagePtr, const IntRect*)
1161 {
1162 // FIXME: Examine cells and repaint only the rect the image paints in.
1163 repaint();
1164 }
1165
1166 void RenderTableSection::recalcCells()
1167 {
1168 m_cCol = 0;
1169 m_cRow = -1;
1170 clearGrid();
1171 m_gridRows = 0;
1172
1173 for (RenderObject* row = firstChild(); row; row = row->nextSibling()) {
1174 if (row->isTableRow()) {
1175 m_cRow++;
1176 m_cCol = 0;
1177 if (!ensureRows(m_cRow + 1))
1178 break;
1179
1180 RenderTableRow* tableRow = toRenderTableRow(row);
1181 m_grid[m_cRow].rowRenderer = tableRow;
1182 setRowLogicalHeightToRowStyleLogicalHeightIfNotRelative(&m_grid[m_cRow]);
1183
1184 for (RenderObject* cell = row->firstChild(); cell; cell = cell->nextSibling()) {
1185 if (cell->isTableCell())
1186 addCell(toRenderTableCell(cell), tableRow);
1187 }
1188 }
1189 }
1190 m_needsCellRecalc = false;
1191 setNeedsLayout(true);
1192 }
1193
1194 void RenderTableSection::setNeedsCellRecalc()
1195 {
1196 m_needsCellRecalc = true;
1197 if (RenderTable* t = table())
1198 t->setNeedsSectionRecalc();
1199 }
1200
1201 void RenderTableSection::clearGrid()
1202 {
1203 int rows = m_gridRows;
1204 while (rows--)
1205 delete m_grid[rows].row;
1206 }
1207
1208 int RenderTableSection::numColumns() const
1209 {
1210 int result = 0;
1211
1212 for (int r = 0; r < m_gridRows; ++r) {
1213 for (int c = result; c < table()->numEffCols(); ++c) {
1214 const CellStruct& cell = cellAt(r, c);
1215 if (cell.hasCells() || cell.inColSpan)
1216 result = c;
1217 }
1218 }
1219
1220 return result + 1;
1221 }
1222
1223 void RenderTableSection::appendColumn(int pos)
1224 {
1225 for (int row = 0; row < m_gridRows; ++row)
1226 m_grid[row].row->resize(pos + 1);
1227 }
1228
1229 void RenderTableSection::splitColumn(int pos, int first)
1230 {
1231 if (m_cCol > pos)
1232 m_cCol++;
1233 for (int row = 0; row < m_gridRows; ++row) {
1234 Row& r = *m_grid[row].row;
1235 r.insert(pos + 1, CellStruct());
1236 if (r[pos].hasCells()) {
1237 r[pos + 1].cells.append(r[pos].cells);
1238 RenderTableCell* cell = r[pos].primaryCell();
1239 ASSERT(cell);
1240 int colleft = cell->colSpan() - r[pos].inColSpan;
1241 if (first > colleft)
1242 r[pos + 1].inColSpan = 0;
1243 else
1244 r[pos + 1].inColSpan = first + r[pos].inColSpan;
1245 } else {
1246 r[pos + 1].inColSpan = 0;
1247 }
1248 }
1249 }
1250
1251 // Hit Testing
1252 bool RenderTableSection::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int xPos, int yPos, int tx, int ty, HitTestAction action)
1253 {
1254 // If we have no children then we have nothing to do.
1255 if (!firstChild())
1256 return false;
1257
1258 // Table sections cannot ever be hit tested. Effectively they do not exist.
1259 // Just forward to our children always.
1260 tx += x();
1261 ty += y();
1262
1263 if (hasOverflowClip() && !overflowClipRect(tx, ty).intersects(result.rectForPoint(xPos, yPos)))
1264 return false;
1265
1266 if (m_hasOverflowingCell) {
1267 for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {
1268 // FIXME: We have to skip over inline flows, since they can show up inside table rows
1269 // at the moment (a demoted inline <form> for example). If we ever implement a
1270 // table-specific hit-test method (which we should do for performance reasons anyway),
1271 // then we can remove this check.
1272 if (child->isBox() && !toRenderBox(child)->hasSelfPaintingLayer()) {
1273 IntPoint childPoint = flipForWritingMode(toRenderBox(child), IntPoint(tx, ty), ParentToChildFlippingAdjustment);
1274 if (child->nodeAtPoint(request, result, xPos, yPos, childPoint.x(), childPoint.y(), action)) {
1275 updateHitTestResult(result, IntPoint(xPos - childPoint.x(), yPos - childPoint.y()));
1276 return true;
1277 }
1278 }
1279 }
1280 return false;
1281 }
1282
1283 IntPoint location = IntPoint(xPos - tx, yPos - ty);
1284 if (style()->isFlippedBlocksWritingMode()) {
1285 if (style()->isHorizontalWritingMode())
1286 location.setY(height() - location.y());
1287 else
1288 location.setX(width() - location.x());
1289 }
1290
1291 int offsetInColumnDirection = style()->isHorizontalWritingMode() ? location.y() : location.x();
1292 // Find the first row that starts after offsetInColumnDirection.
1293 unsigned nextRow = std::upper_bound(m_rowPos.begin(), m_rowPos.end(), offsetInColumnDirection) - m_rowPos.begin();
1294 if (nextRow == m_rowPos.size())
1295 return false;
1296 // Now set hitRow to the index of the hit row, or 0.
1297 unsigned hitRow = nextRow > 0 ? nextRow - 1 : 0;
1298
1299 Vector<int>& columnPos = table()->columnPositions();
1300 int offsetInRowDirection = style()->isHorizontalWritingMode() ? location.x() : location.y();
1301 if (!style()->isLeftToRightDirection())
1302 offsetInRowDirection = columnPos[columnPos.size() - 1] - offsetInRowDirection;
1303
1304 unsigned nextColumn = std::lower_bound(columnPos.begin(), columnPos.end(), offsetInRowDirection) - columnPos.begin();
1305 if (nextColumn == columnPos.size())
1306 return false;
1307 unsigned hitColumn = nextColumn > 0 ? nextColumn - 1 : 0;
1308
1309 CellStruct& current = cellAt(hitRow, hitColumn);
1310
1311 // If the cell is empty, there's nothing to do
1312 if (!current.hasCells())
1313 return false;
1314
1315 for (int i = current.cells.size() - 1; i >= 0; --i) {
1316 RenderTableCell* cell = current.cells[i];
1317 IntPoint cellPoint = flipForWritingMode(cell, IntPoint(tx, ty), ParentToChildFlippingAdjustment);
1318 if (static_cast<RenderObject*>(cell)->nodeAtPoint(request, result, xPos, yPos, cellPoint.x(), cellPoint.y(), action)) {
1319 updateHitTestResult(result, IntPoint(xPos - cellPoint.x(), yPos - cellPoint.y()));
1320 return true;
1321 }
1322 }
1323 return false;
1324
1325 }
1326
1327 } // namespace WebCore
1328