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, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved. 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Library General Public 11 * License as published by the Free Software Foundation; either 12 * version 2 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Library General Public License for more details. 18 * 19 * You should have received a copy of the GNU Library General Public License 20 * along with this library; see the file COPYING.LIB. If not, write to 21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 22 * Boston, MA 02110-1301, USA. 23 */ 24 25 #include "config.h" 26 #include "core/rendering/RenderTableRow.h" 27 28 #include "core/HTMLNames.h" 29 #include "core/fetch/ImageResource.h" 30 #include "core/paint/TableRowPainter.h" 31 #include "core/rendering/GraphicsContextAnnotator.h" 32 #include "core/rendering/HitTestResult.h" 33 #include "core/rendering/PaintInfo.h" 34 #include "core/rendering/RenderTableCell.h" 35 #include "core/rendering/RenderView.h" 36 #include "core/rendering/SubtreeLayoutScope.h" 37 #include "core/rendering/style/StyleInheritedData.h" 38 39 namespace blink { 40 41 using namespace HTMLNames; 42 43 RenderTableRow::RenderTableRow(Element* element) 44 : RenderBox(element) 45 , m_rowIndex(unsetRowIndex) 46 { 47 // init RenderObject attributes 48 setInline(false); // our object is not Inline 49 } 50 51 void RenderTableRow::trace(Visitor* visitor) 52 { 53 visitor->trace(m_children); 54 RenderBox::trace(visitor); 55 } 56 57 void RenderTableRow::willBeRemovedFromTree() 58 { 59 RenderBox::willBeRemovedFromTree(); 60 61 section()->setNeedsCellRecalc(); 62 } 63 64 static bool borderWidthChanged(const RenderStyle* oldStyle, const RenderStyle* newStyle) 65 { 66 return oldStyle->borderLeftWidth() != newStyle->borderLeftWidth() 67 || oldStyle->borderTopWidth() != newStyle->borderTopWidth() 68 || oldStyle->borderRightWidth() != newStyle->borderRightWidth() 69 || oldStyle->borderBottomWidth() != newStyle->borderBottomWidth(); 70 } 71 72 void RenderTableRow::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) 73 { 74 ASSERT(style()->display() == TABLE_ROW); 75 76 RenderBox::styleDidChange(diff, oldStyle); 77 propagateStyleToAnonymousChildren(); 78 79 if (section() && oldStyle && style()->logicalHeight() != oldStyle->logicalHeight()) 80 section()->rowLogicalHeightChanged(this); 81 82 // If border was changed, notify table. 83 if (parent()) { 84 RenderTable* table = this->table(); 85 if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border()) 86 table->invalidateCollapsedBorders(); 87 88 if (table && oldStyle && diff.needsFullLayout() && needsLayout() && table->collapseBorders() && borderWidthChanged(oldStyle, style())) { 89 // If the border width changes on a row, we need to make sure the cells in the row know to lay out again. 90 // This only happens when borders are collapsed, since they end up affecting the border sides of the cell 91 // itself. 92 for (RenderBox* childBox = firstChildBox(); childBox; childBox = childBox->nextSiblingBox()) { 93 if (!childBox->isTableCell()) 94 continue; 95 childBox->setChildNeedsLayout(); 96 } 97 } 98 } 99 } 100 101 const BorderValue& RenderTableRow::borderAdjoiningStartCell(const RenderTableCell* cell) const 102 { 103 ASSERT_UNUSED(cell, cell->isFirstOrLastCellInRow()); 104 // FIXME: https://webkit.org/b/79272 - Add support for mixed directionality at the cell level. 105 return style()->borderStart(); 106 } 107 108 const BorderValue& RenderTableRow::borderAdjoiningEndCell(const RenderTableCell* cell) const 109 { 110 ASSERT_UNUSED(cell, cell->isFirstOrLastCellInRow()); 111 // FIXME: https://webkit.org/b/79272 - Add support for mixed directionality at the cell level. 112 return style()->borderEnd(); 113 } 114 115 void RenderTableRow::addChild(RenderObject* child, RenderObject* beforeChild) 116 { 117 if (!child->isTableCell()) { 118 RenderObject* last = beforeChild; 119 if (!last) 120 last = lastCell(); 121 if (last && last->isAnonymous() && last->isTableCell() && !last->isBeforeOrAfterContent()) { 122 RenderTableCell* lastCell = toRenderTableCell(last); 123 if (beforeChild == lastCell) 124 beforeChild = lastCell->firstChild(); 125 lastCell->addChild(child, beforeChild); 126 return; 127 } 128 129 if (beforeChild && !beforeChild->isAnonymous() && beforeChild->parent() == this) { 130 RenderObject* cell = beforeChild->previousSibling(); 131 if (cell && cell->isTableCell() && cell->isAnonymous()) { 132 cell->addChild(child); 133 return; 134 } 135 } 136 137 // If beforeChild is inside an anonymous cell, insert into the cell. 138 if (last && !last->isTableCell() && last->parent() && last->parent()->isAnonymous() && !last->parent()->isBeforeOrAfterContent()) { 139 last->parent()->addChild(child, beforeChild); 140 return; 141 } 142 143 RenderTableCell* cell = RenderTableCell::createAnonymousWithParentRenderer(this); 144 addChild(cell, beforeChild); 145 cell->addChild(child); 146 return; 147 } 148 149 if (beforeChild && beforeChild->parent() != this) 150 beforeChild = splitAnonymousBoxesAroundChild(beforeChild); 151 152 RenderTableCell* cell = toRenderTableCell(child); 153 154 // Generated content can result in us having a null section so make sure to null check our parent. 155 if (parent()) 156 section()->addCell(cell, this); 157 158 ASSERT(!beforeChild || beforeChild->isTableCell()); 159 RenderBox::addChild(cell, beforeChild); 160 161 if (beforeChild || nextRow()) 162 section()->setNeedsCellRecalc(); 163 } 164 165 void RenderTableRow::layout() 166 { 167 ASSERT(needsLayout()); 168 169 // Table rows do not add translation. 170 LayoutState state(*this, LayoutSize()); 171 172 for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell()) { 173 SubtreeLayoutScope layouter(*cell); 174 if (!cell->needsLayout()) 175 cell->markForPaginationRelayoutIfNeeded(layouter); 176 if (cell->needsLayout()) { 177 cell->computeAndSetBlockDirectionMargins(table()); 178 cell->layout(); 179 } 180 } 181 182 m_overflow.clear(); 183 addVisualEffectOverflow(); 184 185 // We only ever need to issue paint invalidations if our cells didn't, which means that they didn't need 186 // layout, so we know that our bounds didn't change. This code is just making up for 187 // the fact that we did not invalidate paints in setStyle() because we had a layout hint. 188 // We cannot call paintInvalidationForWholeRenderer() because our clippedOverflowRectForPaintInvalidation() is taken from the 189 // parent table, and being mid-layout, that is invalid. Instead, we issue paint invalidations for our cells. 190 if (selfNeedsLayout() && checkForPaintInvalidation()) { 191 for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell()) { 192 // FIXME: Is this needed when issuing paint invalidations after layout? 193 cell->setShouldDoFullPaintInvalidation(true); 194 } 195 } 196 197 // RenderTableSection::layoutRows will set our logical height and width later, so it calls updateLayerTransform(). 198 clearNeedsLayout(); 199 } 200 201 // Hit Testing 202 bool RenderTableRow::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action) 203 { 204 // Table rows cannot ever be hit tested. Effectively they do not exist. 205 // Just forward to our children always. 206 for (RenderTableCell* cell = lastCell(); cell; cell = cell->previousCell()) { 207 // FIXME: We have to skip over inline flows, since they can show up inside table rows 208 // at the moment (a demoted inline <form> for example). If we ever implement a 209 // table-specific hit-test method (which we should do for performance reasons anyway), 210 // then we can remove this check. 211 if (!cell->hasSelfPaintingLayer()) { 212 LayoutPoint cellPoint = flipForWritingModeForChild(cell, accumulatedOffset); 213 if (cell->nodeAtPoint(request, result, locationInContainer, cellPoint, action)) { 214 updateHitTestResult(result, locationInContainer.point() - toLayoutSize(cellPoint)); 215 return true; 216 } 217 } 218 } 219 220 return false; 221 } 222 223 void RenderTableRow::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) 224 { 225 TableRowPainter(*this).paint(paintInfo, paintOffset); 226 } 227 228 void RenderTableRow::imageChanged(WrappedImagePtr, const IntRect*) 229 { 230 // FIXME: Examine cells and issue paint invalidations of only the rect the image paints in. 231 setShouldDoFullPaintInvalidation(true); 232 } 233 234 RenderTableRow* RenderTableRow::createAnonymous(Document* document) 235 { 236 RenderTableRow* renderer = new RenderTableRow(0); 237 renderer->setDocumentForAnonymous(document); 238 return renderer; 239 } 240 241 RenderTableRow* RenderTableRow::createAnonymousWithParentRenderer(const RenderObject* parent) 242 { 243 RenderTableRow* newRow = RenderTableRow::createAnonymous(&parent->document()); 244 RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(parent->style(), TABLE_ROW); 245 newRow->setStyle(newStyle.release()); 246 return newRow; 247 } 248 249 } // namespace blink 250