Source/WebCore/rendering/RenderTableRow.cpp

   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, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Library General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Library General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Library General Public License
  20  * along with this library; see the file COPYING.LIB.  If not, write to
  21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  * Boston, MA 02110-1301, USA.
  23  */
  24
  25 #include "config.h"
  26 #include "RenderTableRow.h"
  27
  28 #include "CachedImage.h"
  29 #include "Document.h"
  30 #include "HTMLNames.h"
  31 #include "HitTestResult.h"
  32 #include "PaintInfo.h"
  33 #include "RenderTableCell.h"
  34 #include "RenderView.h"
  35
  36 namespace WebCore {
  37
  38 using namespace HTMLNames;
  39
  40 RenderTableRow::RenderTableRow(Node* node)
  41     : RenderBox(node)
  42     , m_rowIndex(unsetRowIndex)
  43 {
  44     // init RenderObject attributes
  45     setInline(false);   // our object is not Inline
  46 }
  47
  48 void RenderTableRow::willBeDestroyed()
  49 {
  50     RenderTableSection* recalcSection = section();
  51
  52     RenderBox::willBeDestroyed();
  53
  54     if (recalcSection)
  55         recalcSection->setNeedsCellRecalc();
  56 }
  57
  58 void RenderTableRow::updateBeforeAndAfterContent()
  59 {
  60     if (!isAnonymous() && document()->usesBeforeAfterRules()) {
  61         children()->updateBeforeAfterContent(this, BEFORE);
  62         children()->updateBeforeAfterContent(this, AFTER);
  63     }
  64 }
  65
  66 void RenderTableRow::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
  67 {
  68     ASSERT(style()->display() == TABLE_ROW);
  69
  70     RenderBox::styleDidChange(diff, oldStyle);
  71     propagateStyleToAnonymousChildren();
  72
  73     if (parent())
  74         updateBeforeAndAfterContent();
  75
  76     if (section() && oldStyle && style()->logicalHeight() != oldStyle->logicalHeight())
  77         section()->rowLogicalHeightChanged(rowIndex());
  78
  79     // If border was changed, notify table.
  80     if (parent()) {
  81         RenderTable* table = this->table();
  82         if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
  83             table->invalidateCollapsedBorders();
  84     }
  85 }
  86
  87 void RenderTableRow::addChild(RenderObject* child, RenderObject* beforeChild)
  88 {
  89     // Make sure we don't append things after :after-generated content if we have it.
  90     if (!beforeChild)
  91         beforeChild = afterPseudoElementRenderer();
  92
  93     if (!child->isTableCell()) {
  94         RenderObject* last = beforeChild;
  95         if (!last)
  96             last = lastChild();
  97         if (last && last->isAnonymous() && last->isTableCell() && !last->isBeforeOrAfterContent()) {
  98             if (beforeChild == last)
  99                 beforeChild = last->firstChild();
 100             last->addChild(child, beforeChild);
 101             return;
 102         }
 103
 104         if (beforeChild && !beforeChild->isAnonymous() && beforeChild->parent() == this) {
 105             RenderObject* cell = beforeChild->previousSibling();
 106             if (cell && cell->isTableCell() && cell->isAnonymous()) {
 107                 cell->addChild(child);
 108                 return;
 109             }
 110         }
 111
 112         // If beforeChild is inside an anonymous cell, insert into the cell.
 113         if (last && !last->isTableCell() && last->parent() && last->parent()->isAnonymous() && !last->parent()->isBeforeOrAfterContent()) {
 114             last->parent()->addChild(child, beforeChild);
 115             return;
 116         }
 117
 118         RenderTableCell* cell = RenderTableCell::createAnonymousWithParentRenderer(this);
 119         addChild(cell, beforeChild);
 120         cell->addChild(child);
 121         return;
 122     }
 123
 124     if (beforeChild && beforeChild->parent() != this)
 125         beforeChild = splitAnonymousBoxesAroundChild(beforeChild);
 126
 127     RenderTableCell* cell = toRenderTableCell(child);
 128
 129     // Generated content can result in us having a null section so make sure to null check our parent.
 130     if (parent())
 131         section()->addCell(cell, this);
 132
 133     ASSERT(!beforeChild || beforeChild->isTableCell());
 134     RenderBox::addChild(cell, beforeChild);
 135
 136     if (beforeChild || nextSibling())
 137         section()->setNeedsCellRecalc();
 138 }
 139
 140 void RenderTableRow::layout()
 141 {
 142     ASSERT(needsLayout());
 143
 144     // Table rows do not add translation.
 145     LayoutStateMaintainer statePusher(view(), this, LayoutSize(), style()->isFlippedBlocksWritingMode());
 146
 147     bool paginated = view()->layoutState()->isPaginated();
 148
 149     for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
 150         if (child->isTableCell()) {
 151             RenderTableCell* cell = toRenderTableCell(child);
 152             if (!cell->needsLayout() && paginated && view()->layoutState()->pageLogicalHeight() && view()->layoutState()->pageLogicalOffset(cell, cell->logicalTop()) != cell->pageLogicalOffset())
 153                 cell->setChildNeedsLayout(true, MarkOnlyThis);
 154
 155             if (child->needsLayout()) {
 156                 cell->computeBlockDirectionMargins(table());
 157                 cell->layout();
 158             }
 159         }
 160     }
 161
 162     // We only ever need to repaint if our cells didn't, which menas that they didn't need
 163     // layout, so we know that our bounds didn't change. This code is just making up for
 164     // the fact that we did not repaint in setStyle() because we had a layout hint.
 165     // We cannot call repaint() because our clippedOverflowRectForRepaint() is taken from the
 166     // parent table, and being mid-layout, that is invalid. Instead, we repaint our cells.
 167     if (selfNeedsLayout() && checkForRepaintDuringLayout()) {
 168         for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
 169             if (child->isTableCell())
 170                 child->repaint();
 171         }
 172     }
 173
 174     statePusher.pop();
 175     // RenderTableSection::layoutRows will set our logical height and width later, so it calls updateLayerTransform().
 176     setNeedsLayout(false);
 177 }
 178
 179 LayoutRect RenderTableRow::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer) const
 180 {
 181     ASSERT(parent());
 182
 183     if (repaintContainer == this)
 184         return RenderBox::clippedOverflowRectForRepaint(repaintContainer);
 185
 186     // For now, just repaint the whole table.
 187     // FIXME: Find a better way to do this, e.g., need to repaint all the cells that we
 188     // might have propagated a background color into.
 189     // FIXME: do repaintContainer checks here
 190     if (RenderTable* parentTable = table())
 191         return parentTable->clippedOverflowRectForRepaint(repaintContainer);
 192
 193     return LayoutRect();
 194 }
 195
 196 // Hit Testing
 197 bool RenderTableRow::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
 198 {
 199     // Table rows cannot ever be hit tested.  Effectively they do not exist.
 200     // Just forward to our children always.
 201     for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {
 202         // FIXME: We have to skip over inline flows, since they can show up inside table rows
 203         // at the moment (a demoted inline <form> for example). If we ever implement a
 204         // table-specific hit-test method (which we should do for performance reasons anyway),
 205         // then we can remove this check.
 206         if (child->isTableCell() && !toRenderBox(child)->hasSelfPaintingLayer()) {
 207             LayoutPoint cellPoint = flipForWritingModeForChild(toRenderTableCell(child), accumulatedOffset);
 208             if (child->nodeAtPoint(request, result, pointInContainer, cellPoint, action)) {
 209                 updateHitTestResult(result, pointInContainer.point() - toLayoutSize(cellPoint));
 210                 return true;
 211             }
 212         }
 213     }
 214
 215     return false;
 216 }
 217
 218 void RenderTableRow::paintOutlineForRowIfNeeded(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 219 {
 220     LayoutPoint adjustedPaintOffset = paintOffset + location();
 221     PaintPhase paintPhase = paintInfo.phase;
 222     if ((paintPhase == PaintPhaseOutline || paintPhase == PaintPhaseSelfOutline) && style()->visibility() == VISIBLE)
 223         paintOutline(paintInfo.context, LayoutRect(adjustedPaintOffset, size()));
 224 }
 225
 226 void RenderTableRow::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 227 {
 228     ASSERT(hasSelfPaintingLayer());
 229
 230     paintOutlineForRowIfNeeded(paintInfo, paintOffset);
 231     for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
 232         if (child->isTableCell()) {
 233             // Paint the row background behind the cell.
 234             if (paintInfo.phase == PaintPhaseBlockBackground || paintInfo.phase == PaintPhaseChildBlockBackground) {
 235                 RenderTableCell* cell = toRenderTableCell(child);
 236                 cell->paintBackgroundsBehindCell(paintInfo, paintOffset, this);
 237             }
 238             if (!toRenderBox(child)->hasSelfPaintingLayer())
 239                 child->paint(paintInfo, paintOffset);
 240         }
 241     }
 242 }
 243
 244 void RenderTableRow::imageChanged(WrappedImagePtr, const IntRect*)
 245 {
 246     // FIXME: Examine cells and repaint only the rect the image paints in.
 247     repaint();
 248 }
 249
 250 RenderTableRow* RenderTableRow::createAnonymousWithParentRenderer(const RenderObject* parent)
 251 {
 252     RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(parent->style(), TABLE_ROW);
 253     RenderTableRow* newRow = new (parent->renderArena()) RenderTableRow(parent->document() /* is anonymous */);
 254     newRow->setStyle(newStyle.release());
 255     return newRow;
 256 }
 257
 258 } // namespace WebCore