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 Apple Computer, Inc.

     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 "RenderTableCell.h"

    32 #include "RenderView.h"

    33 

    34 namespace WebCore {

    35 

    36 using namespace HTMLNames;

    37 

    38 RenderTableRow::RenderTableRow(Node* node)

    39     : RenderBox(node)

    40 {

    41     // init RenderObject attributes

    42     setInline(false);   // our object is not Inline

    43 }

    44 

    45 void RenderTableRow::destroy()

    46 {

    47     RenderTableSection* recalcSection = section();

    48     

    49     RenderBox::destroy();

    50     

    51     if (recalcSection)

    52         recalcSection->setNeedsCellRecalc();

    53 }

    54 

    55 void RenderTableRow::styleWillChange(StyleDifference diff, const RenderStyle* newStyle)

    56 {

    57     if (section() && style() && style()->height() != newStyle->height())

    58         section()->setNeedsCellRecalc();

    59 

    60     ASSERT(newStyle->display() == TABLE_ROW);

    61 

    62     RenderBox::styleWillChange(diff, newStyle);

    63 }

    64 

    65 void RenderTableRow::addChild(RenderObject* child, RenderObject* beforeChild)

    66 {

    67     // Make sure we don't append things after :after-generated content if we have it.

    68     if (!beforeChild && isAfterContent(lastChild()))

    69         beforeChild = lastChild();

    70 

    71     if (!child->isTableCell()) {

    72         RenderObject* last = beforeChild;

    73         if (!last)

    74             last = lastChild();

    75         if (last && last->isAnonymous() && last->isTableCell()) {

    76             last->addChild(child);

    77             return;

    78         }

    79 

    80         // If beforeChild is inside an anonymous cell, insert into the cell.

    81         if (last && !last->isTableCell() && last->parent() && last->parent()->isAnonymous()) {

    82             last->parent()->addChild(child, beforeChild);

    83             return;

    84         }

    85 

    86         RenderTableCell* cell = new (renderArena()) RenderTableCell(document() /* anonymous object */);

    87         RefPtr<RenderStyle> newStyle = RenderStyle::create();

    88         newStyle->inheritFrom(style());

    89         newStyle->setDisplay(TABLE_CELL);

    90         cell->setStyle(newStyle.release());

    91         addChild(cell, beforeChild);

    92         cell->addChild(child);

    93         return;

    94     } 

    95     

    96     // If the next renderer is actually wrapped in an anonymous table cell, we need to go up and find that.

    97     while (beforeChild && beforeChild->parent() != this)

    98         beforeChild = beforeChild->parent();

    99 

   100     RenderTableCell* cell = toRenderTableCell(child);

   101 

   102     // Generated content can result in us having a null section so make sure to null check our parent.

   103     if (parent())

   104         section()->addCell(cell, this);

   105 

   106     ASSERT(!beforeChild || beforeChild->isTableCell());

   107     RenderBox::addChild(cell, beforeChild);

   108 

   109     if (beforeChild || nextSibling())

   110         section()->setNeedsCellRecalc();

   111 }

   112 

   113 void RenderTableRow::layout()

   114 {

   115     ASSERT(needsLayout());

   116 

   117     // Table rows do not add translation.

   118     LayoutStateMaintainer statePusher(view(), this, IntSize());

   119 

   120     for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {

   121         if (child->isTableCell()) {

   122             RenderTableCell* cell = toRenderTableCell(child);

   123             if (child->needsLayout()) {

   124                 cell->calcVerticalMargins();

   125                 cell->layout();

   126             }

   127         }

   128     }

   129 

   130     // We only ever need to repaint if our cells didn't, which menas that they didn't need

   131     // layout, so we know that our bounds didn't change. This code is just making up for

   132     // the fact that we did not repaint in setStyle() because we had a layout hint.

   133     // We cannot call repaint() because our clippedOverflowRectForRepaint() is taken from the

   134     // parent table, and being mid-layout, that is invalid. Instead, we repaint our cells.

   135     if (selfNeedsLayout() && checkForRepaintDuringLayout()) {

   136         for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {

   137             if (child->isTableCell())

   138                 child->repaint();

   139         }

   140     }

   141 

   142     statePusher.pop();

   143     setNeedsLayout(false);

   144 }

   145 

   146 IntRect RenderTableRow::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)

   147 {

   148     ASSERT(parent());

   149 

   150     if (repaintContainer == this)

   151         return RenderBox::clippedOverflowRectForRepaint(repaintContainer);

   152 

   153     // For now, just repaint the whole table.

   154     // FIXME: Find a better way to do this, e.g., need to repaint all the cells that we

   155     // might have propagated a background color into.

   156     // FIXME: do repaintContainer checks here

   157     if (RenderTable* parentTable = table())

   158         return parentTable->clippedOverflowRectForRepaint(repaintContainer);

   159 

   160     return IntRect();

   161 }

   162 

   163 // Hit Testing

   164 bool RenderTableRow::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty, HitTestAction action)

   165 {

   166     // Table rows cannot ever be hit tested.  Effectively they do not exist.

   167     // Just forward to our children always.

   168     for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {

   169         // FIXME: We have to skip over inline flows, since they can show up inside table rows

   170         // at the moment (a demoted inline <form> for example). If we ever implement a

   171         // table-specific hit-test method (which we should do for performance reasons anyway),

   172         // then we can remove this check.

   173         if (child->isTableCell() && !toRenderBox(child)->hasSelfPaintingLayer() && child->nodeAtPoint(request, result, x, y, tx, ty, action)) {

   174             updateHitTestResult(result, IntPoint(x - tx, y - ty));

   175             return true;

   176         }

   177     }

   178     

   179     return false;

   180 }

   181 

   182 void RenderTableRow::paint(PaintInfo& paintInfo, int tx, int ty)

   183 {

   184     ASSERT(hasSelfPaintingLayer());

   185     if (!layer())

   186         return;

   187     for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {

   188         if (child->isTableCell()) {

   189             // Paint the row background behind the cell.

   190             if (paintInfo.phase == PaintPhaseBlockBackground || paintInfo.phase == PaintPhaseChildBlockBackground) {

   191                 RenderTableCell* cell = toRenderTableCell(child);

   192                 cell->paintBackgroundsBehindCell(paintInfo, tx, ty, this);

   193             }

   194             if (!toRenderBox(child)->hasSelfPaintingLayer())

   195                 child->paint(paintInfo, tx, ty);

   196         }

   197     }

   198 }

   199 

   200 void RenderTableRow::imageChanged(WrappedImagePtr, const IntRect*)

   201 {

   202     // FIXME: Examine cells and repaint only the rect the image paints in.

   203     repaint();

   204 }

   205 

   206 } // namespace WebCore