1 /* 2 * Copyright (C) 1997 Martin Jones (mjones (at) kde.org) 3 * (C) 1997 Torben Weis (weis (at) kde.org) 4 * (C) 1998 Waldo Bastian (bastian (at) kde.org) 5 * (C) 1999 Lars Knoll (knoll (at) kde.org) 6 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 7 * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved. 8 * Copyright (C) 2006 Alexey Proskuryakov (ap (at) 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 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 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 73 RenderTableSection::~RenderTableSection() 74 { 75 clearGrid(); 76 } 77 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 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 } 147 148 void RenderTableSection::removeChild(RenderObject* oldChild) 149 { 150 setNeedsCellRecalc(); 151 RenderBox::removeChild(oldChild); 152 } 153 154 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 } 180 181 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 } 258 259 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
