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