Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 996 insertions, 0 deletions

diff --git a/khtml/rendering/render_line.cpp b/khtml/rendering/render_line.cpp
new file mode 100644
index 000000000..18a5f5101
--- /dev/null
+++ b/khtml/rendering/render_line.cpp
@@ -0,0 +1,996 @@
+/**
+* This file is part of the html renderer for KDE.
+ *
+ * Copyright (C) 2003-2006 Apple Computer, Inc.
+ *           (C) 2006 Germain Garand (germain@ebooksfrance.org)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+// -------------------------------------------------------------------------
+
+#include <kdebug.h>
+#include <assert.h>
+#include <qpainter.h>
+#include <kglobal.h>
+
+#include "rendering/render_flow.h"
+#include "rendering/render_text.h"
+#include "rendering/render_table.h"
+#include "rendering/render_inline.h"
+#include "rendering/render_block.h"
+#include "rendering/render_arena.h"
+#include "rendering/render_line.h"
+#include "xml/dom_nodeimpl.h"
+#include "xml/dom_docimpl.h"
+#include "html/html_formimpl.h"
+#include "misc/htmltags.h"
+#include "khtmlview.h"
+
+using namespace DOM;
+using namespace khtml;
+
+#ifndef NDEBUG
+static bool inInlineBoxDetach;
+#endif
+
+class khtml::EllipsisBox : public InlineBox
+{
+public:
+    EllipsisBox(RenderObject* obj, const DOM::DOMString& ellipsisStr, InlineFlowBox* p,
+                int w, int y, int h, int b, bool firstLine, InlineBox* markupBox)
+    :InlineBox(obj), m_str(ellipsisStr) {
+        m_parent = p;
+        m_width = w;
+        m_y = y;
+        m_height = h;
+        m_baseline = b;
+        m_firstLine = firstLine;
+        m_constructed = true;
+        m_markupBox = markupBox;
+    }
+
+    void paint(RenderObject::PaintInfo& i, int _tx, int _ty);
+    bool nodeAtPoint(RenderObject::NodeInfo& info, int _x, int _y, int _tx, int _ty);
+
+private:
+    DOM::DOMString m_str;
+    InlineBox* m_markupBox;
+};
+
+void InlineBox::detach(RenderArena* renderArena)
+{
+    if (m_parent)
+        m_parent->removeFromLine(this);
+#ifndef NDEBUG
+    inInlineBoxDetach = true;
+#endif
+    delete this;
+#ifndef NDEBUG
+    inInlineBoxDetach = false;
+#endif
+
+    // Recover the size left there for us by operator delete and free the memory.
+    renderArena->free(*(size_t *)this, this);
+}
+
+void* InlineBox::operator new(size_t sz, RenderArena* renderArena) throw()
+{
+    return renderArena->allocate(sz);
+}
+
+void InlineBox::operator delete(void* ptr, size_t sz)
+{
+    assert(inInlineBoxDetach);
+
+    // Stash size where detach can find it.
+    *(size_t *)ptr = sz;
+}
+
+static bool needsOutlinePhaseRepaint(RenderObject* o, RenderObject::PaintInfo& i, int tx, int ty) {
+    if (o->style()->outlineWidth() <= 0)
+        return false;
+    QRect r(tx+o->xPos(),ty+o->yPos(),o->width(),o->height());
+    if (r.intersects(i.r))
+        return false;
+    r.addCoords(-o->style()->outlineSize(),
+                -o->style()->outlineSize(),
+                 o->style()->outlineSize(),
+                 o->style()->outlineSize());
+    if (!r.intersects(i.r))
+        return false;
+    return true;
+}
+
+void InlineBox::paint(RenderObject::PaintInfo& i, int tx, int ty)
+{
+    if ( i.phase == PaintActionOutline && !needsOutlinePhaseRepaint(object(), i, tx, ty) )
+        return;
+
+    // Paint all phases of replaced elements atomically, as though the replaced element established its
+    // own stacking context.  (See Appendix E.2, section 6.4 on inline block/table elements in the CSS2.1
+    // specification.)
+    bool paintSelectionOnly = i.phase == PaintActionSelection;
+    RenderObject::PaintInfo info(i.p, i.r, paintSelectionOnly ? i.phase : PaintActionElementBackground);
+    object()->paint(info, tx, ty);
+    if (!paintSelectionOnly) {
+        info.phase = PaintActionChildBackgrounds;
+        object()->paint(info, tx, ty);
+        info.phase = PaintActionFloat;
+        object()->paint(info, tx, ty);
+        info.phase = PaintActionForeground;
+        object()->paint(info, tx, ty);
+        info.phase = PaintActionOutline;
+        object()->paint(info, tx, ty);
+    }
+}
+
+bool InlineBox::nodeAtPoint(RenderObject::NodeInfo& i, int x, int y, int tx, int ty)
+{
+    // Hit test all phases of replaced elements atomically, as though the replaced element established its
+    // own stacking context.  (See Appendix E.2, section 6.4 on inline block/table elements in the CSS2.1
+    // specification.)
+    bool inside = false;
+    return object()->nodeAtPoint(i, x, y, tx, ty, HitTestAll, inside); // ### port hitTest
+}
+
+RootInlineBox* InlineBox::root()
+{
+    if (m_parent)
+        return m_parent->root();
+    return static_cast<RootInlineBox*>(this);
+}
+
+InlineFlowBox::~InlineFlowBox()
+{
+    /* If we're destroyed, set the children free, and break their links */
+    while (m_firstChild)
+        removeFromLine(m_firstChild);
+}
+
+void InlineFlowBox::removeFromLine(InlineBox *child)
+{
+    if (child == m_firstChild) {
+        m_firstChild = child->nextOnLine();
+    }
+    if (child == m_lastChild) {
+        m_lastChild = child->prevOnLine();
+    }
+    if (child->nextOnLine()) {
+        child->nextOnLine()->m_prev = child->prevOnLine();
+    }
+    if (child->prevOnLine()) {
+        child->prevOnLine()->m_next = child->nextOnLine();
+    }
+
+    child->setParent(0);
+}
+
+bool InlineBox::canAccommodateEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth)
+{
+    // Non-replaced elements can always accommodate an ellipsis.
+    if (!m_object || !m_object->isReplaced())
+        return true;
+
+    QRect boxRect(m_x, 0, m_width, 10);
+    QRect ellipsisRect(ltr ? blockEdge - ellipsisWidth : blockEdge, 0, ellipsisWidth, 10);
+    return !(boxRect.intersects(ellipsisRect));
+}
+
+int InlineBox::placeEllipsisBox(bool /*ltr*/, int /*blockEdge*/, int /*ellipsisWidth*/, bool&)
+{
+    // Use -1 to mean "we didn't set the position."
+    return -1;
+}
+
+int InlineFlowBox::marginLeft() const
+{
+    if (!includeLeftEdge())
+        return 0;
+
+    RenderStyle* cstyle = object()->style();
+    Length margin = cstyle->marginLeft();
+    if (!margin.isVariable())
+        return (margin.isFixed() ? margin.value() : object()->marginLeft());
+    return 0;
+}
+
+int InlineFlowBox::marginRight() const
+{
+    if (!includeRightEdge())
+        return 0;
+
+    RenderStyle* cstyle = object()->style();
+    Length margin = cstyle->marginRight();
+    if (!margin.isVariable())
+        return (margin.isFixed() ? margin.value() : object()->marginRight());
+    return 0;
+}
+
+int InlineFlowBox::marginBorderPaddingLeft() const
+{
+    return marginLeft() + borderLeft() + paddingLeft();
+}
+
+int InlineFlowBox::marginBorderPaddingRight() const
+{
+    return marginRight() + borderRight() + paddingRight();
+}
+
+int InlineFlowBox::getFlowSpacingWidth() const
+{
+    int totWidth = marginBorderPaddingLeft() + marginBorderPaddingRight();
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        if (curr->isInlineFlowBox())
+            totWidth += static_cast<InlineFlowBox*>(curr)->getFlowSpacingWidth();
+    }
+    return totWidth;
+}
+
+bool InlineFlowBox::nextOnLineExists()
+{
+    if (!parent())
+        return false;
+
+    if (nextOnLine())
+        return true;
+
+    return parent()->nextOnLineExists();
+}
+
+bool InlineFlowBox::prevOnLineExists()
+{
+    if (!parent())
+        return false;
+
+    if (prevOnLine())
+        return true;
+
+    return parent()->prevOnLineExists();
+}
+
+bool InlineFlowBox::onEndChain(RenderObject* endObject)
+{
+    if (!endObject)
+        return false;
+
+    if (endObject == object())
+        return true;
+
+    RenderObject* curr = endObject;
+    RenderObject* parent = curr->parent();
+    while (parent && !parent->isRenderBlock() || parent == object()) {
+        if (parent->lastChild() != curr)
+            return false;
+
+        curr = parent;
+        parent = curr->parent();
+    }
+
+    return true;
+}
+
+void InlineFlowBox::determineSpacingForFlowBoxes(bool lastLine, RenderObject* endObject)
+{
+    // All boxes start off open.  They will not apply any margins/border/padding on
+    // any side.
+    bool includeLeftEdge = false;
+    bool includeRightEdge = false;
+
+    RenderFlow* flow = static_cast<RenderFlow*>(object());
+
+    if (!flow->firstChild())
+        includeLeftEdge = includeRightEdge = true; // Empty inlines never split across lines.
+    else if (parent()) { // The root inline box never has borders/margins/padding.
+        bool ltr = flow->style()->direction() == LTR;
+
+        // Check to see if all initial lines are unconstructed.  If so, then
+        // we know the inline began on this line.
+        if (!flow->firstLineBox()->isConstructed()) {
+            if (ltr && flow->firstLineBox() == this)
+                includeLeftEdge = true;
+            else if (!ltr && flow->lastLineBox() == this)
+                includeRightEdge = true;
+        }
+
+        // In order to determine if the inline ends on this line, we check three things:
+        // (1) If we are the last line and we don't have a continuation(), then we can
+        // close up.
+        // (2) If the last line box for the flow has an object following it on the line (ltr,
+        // reverse for rtl), then the inline has closed.
+        // (3) The line may end on the inline.  If we are the last child (climbing up
+        // the end object's chain), then we just closed as well.
+        if (!flow->lastLineBox()->isConstructed()) {
+            if (ltr) {
+                if (!nextLineBox() &&
+                    ((lastLine && !object()->continuation()) || nextOnLineExists()
+                     || onEndChain(endObject)))
+                    includeRightEdge = true;
+            }
+            else {
+                if ((!prevLineBox() || !prevLineBox()->isConstructed()) &&
+                    ((lastLine && !object()->continuation()) ||
+                     prevOnLineExists() || onEndChain(endObject)))
+                    includeLeftEdge = true;
+            }
+
+        }
+    }
+
+    setEdges(includeLeftEdge, includeRightEdge);
+
+    // Recur into our children.
+    for (InlineBox* currChild = firstChild(); currChild; currChild = currChild->nextOnLine()) {
+        if (currChild->isInlineFlowBox()) {
+            InlineFlowBox* currFlow = static_cast<InlineFlowBox*>(currChild);
+            currFlow->determineSpacingForFlowBoxes(lastLine, endObject);
+        }
+    }
+}
+
+int InlineFlowBox::placeBoxesHorizontally(int x)
+{
+    // Set our x position.
+    setXPos(x);
+
+    int startX = x;
+    x += borderLeft() + paddingLeft();
+
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        if (curr->object()->isText()) {
+            InlineTextBox* text = static_cast<InlineTextBox*>(curr);
+            text->setXPos(x);
+            x += curr->width();
+        }
+        else {
+            if (curr->object()->isPositioned()) {
+                if (curr->object()->parent()->style()->direction() == LTR)
+                    curr->setXPos(x);
+                else {
+                    // Our offset that we cache needs to be from the edge of the right border box and
+                    // not the left border box.  We have to subtract |x| from the width of the block
+                    // (which can be obtained by walking up to the root line box).
+                    InlineBox* root = this;
+                    while (!root->isRootInlineBox())
+                        root = root->parent();
+                    curr->setXPos(root->object()->width()-x);
+                }
+                continue; // The positioned object has no effect on the width.
+            }
+            if (curr->object()->isInlineFlow()) {
+                InlineFlowBox* flow = static_cast<InlineFlowBox*>(curr);
+                x += flow->marginLeft();
+                x = flow->placeBoxesHorizontally(x);
+                x += flow->marginRight();
+            }
+            else {
+                x += curr->object()->marginLeft();
+                curr->setXPos(x);
+                x += curr->width() + curr->object()->marginRight();
+            }
+        }
+    }
+
+    x += borderRight() + paddingRight();
+    setWidth(x-startX);
+    return x;
+}
+
+void InlineFlowBox::verticallyAlignBoxes(int& heightOfBlock)
+{
+    int maxPositionTop = 0;
+    int maxPositionBottom = 0;
+    int maxAscent = 0;
+    int maxDescent = 0;
+
+    // Figure out if we're in strict mode.
+    RenderObject* curr = object();
+    while (curr && !curr->element())
+        curr = curr->container();
+    bool strictMode = (curr && curr->element()->getDocument()->inStrictMode());
+
+    computeLogicalBoxHeights(maxPositionTop, maxPositionBottom, maxAscent, maxDescent, strictMode);
+
+    if (maxAscent + maxDescent < kMax(maxPositionTop, maxPositionBottom))
+        adjustMaxAscentAndDescent(maxAscent, maxDescent, maxPositionTop, maxPositionBottom);
+
+    int maxHeight = maxAscent + maxDescent;
+    int topPosition = heightOfBlock;
+    int bottomPosition = heightOfBlock;
+    placeBoxesVertically(heightOfBlock, maxHeight, maxAscent, strictMode, topPosition, bottomPosition);
+
+    setOverflowPositions(topPosition, bottomPosition);
+
+    // Shrink boxes with no text children in quirks and almost strict mode.
+    if (!strictMode)
+        shrinkBoxesWithNoTextChildren(topPosition, bottomPosition);
+
+    heightOfBlock += maxHeight;
+}
+
+void InlineFlowBox::adjustMaxAscentAndDescent(int& maxAscent, int& maxDescent,
+                                              int maxPositionTop, int maxPositionBottom)
+{
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        // The computed lineheight needs to be extended for the
+        // positioned elements
+        // see khtmltests/rendering/html_align.html
+
+        if (curr->object()->isPositioned())
+            continue; // Positioned placeholders don't affect calculations.
+        if (curr->yPos() == PositionTop || curr->yPos() == PositionBottom) {
+            if (curr->yPos() == PositionTop) {
+                if (maxAscent + maxDescent < curr->height())
+                    maxDescent = curr->height() - maxAscent;
+            }
+            else {
+                if (maxAscent + maxDescent < curr->height())
+                    maxAscent = curr->height() - maxDescent;
+            }
+
+            if ( maxAscent + maxDescent >= kMax( maxPositionTop, maxPositionBottom ) )
+                break;
+        }
+
+        if (curr->isInlineFlowBox())
+            static_cast<InlineFlowBox*>(curr)->adjustMaxAscentAndDescent(maxAscent, maxDescent, maxPositionTop, maxPositionBottom);
+    }
+}
+
+void InlineFlowBox::computeLogicalBoxHeights(int& maxPositionTop, int& maxPositionBottom,
+                                             int& maxAscent, int& maxDescent, bool strictMode)
+{
+    if (isRootInlineBox()) {
+        // Examine our root box.
+        setHeight(object()->lineHeight(m_firstLine));
+        bool isTableCell = object()->isTableCell();
+        if (isTableCell) {
+            RenderTableCell* tableCell = static_cast<RenderTableCell*>(object());
+            setBaseline(tableCell->RenderBlock::baselinePosition(m_firstLine));
+        }
+        else
+            setBaseline(object()->baselinePosition(m_firstLine));
+        if (hasTextChildren() || strictMode) {
+            int ascent = baseline();
+            int descent = height() - ascent;
+            if (maxAscent < ascent)
+                maxAscent = ascent;
+            if (maxDescent < descent)
+                maxDescent = descent;
+        }
+    }
+
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        if (curr->object()->isPositioned())
+            continue; // Positioned placeholders don't affect calculations.
+
+        curr->setHeight(curr->object()->lineHeight(m_firstLine));
+        curr->setBaseline(curr->object()->baselinePosition(m_firstLine));
+        curr->setYPos(curr->object()->verticalPositionHint(m_firstLine));
+        if (curr->yPos() == PositionTop) {
+            if (maxPositionTop < curr->height())
+                maxPositionTop = curr->height();
+        }
+        else if (curr->yPos() == PositionBottom) {
+            if (maxPositionBottom < curr->height())
+                maxPositionBottom = curr->height();
+        }
+        else if (curr->hasTextChildren() || strictMode) {
+            int ascent = curr->baseline() - curr->yPos();
+            int descent = curr->height() - ascent;
+            if (maxAscent < ascent)
+                maxAscent = ascent;
+            if (maxDescent < descent)
+                maxDescent = descent;
+        }
+
+        if (curr->isInlineFlowBox())
+            static_cast<InlineFlowBox*>(curr)->computeLogicalBoxHeights(maxPositionTop, maxPositionBottom, maxAscent, maxDescent, strictMode);
+    }
+}
+
+void InlineFlowBox::placeBoxesVertically(int y, int maxHeight, int maxAscent, bool strictMode,
+                                         int& topPosition, int& bottomPosition)
+{
+    if (isRootInlineBox()) {
+        setYPos(y + maxAscent - baseline());// Place our root box.
+        // CSS2: 10.8.1 - line-height on the block level element specifies the *minimum*
+        // height of the generated line box
+        if (hasTextChildren() && maxHeight < object()->lineHeight(m_firstLine))
+            maxHeight = object()->lineHeight(m_firstLine);
+    }
+
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        if (curr->object()->isPositioned())
+            continue; // Positioned placeholders don't affect calculations.
+
+        // Adjust boxes to use their real box y/height and not the logical height (as dictated by
+        // line-height).
+        if (curr->isInlineFlowBox())
+            static_cast<InlineFlowBox*>(curr)->placeBoxesVertically(y, maxHeight, maxAscent, strictMode,
+                                                                    topPosition, bottomPosition);
+
+        bool childAffectsTopBottomPos = true;
+
+        if (curr->yPos() == PositionTop)
+            curr->setYPos(y);
+        else if (curr->yPos() == PositionBottom)
+            curr->setYPos(y + maxHeight - curr->height());
+        else {
+            if (!strictMode && !curr->hasTextDescendant())
+                childAffectsTopBottomPos = false;
+            curr->setYPos(curr->yPos() + y + maxAscent - curr->baseline());
+        }
+        int newY = curr->yPos();
+        int newHeight = curr->height();
+        int newBaseline = curr->baseline();
+        int overflowTop = 0;
+        int overflowBottom = 0;
+        if (curr->isInlineTextBox() || curr->isInlineFlowBox()) {
+            const QFontMetrics &fm = curr->object()->fontMetrics( m_firstLine );
+#ifdef APPLE_CHANGES
+            newBaseline = fm.ascent();
+            newY += curr->baseline() - newBaseline;
+            newHeight = newBaseline+fm.descent();
+#else
+            // only adjust if the leading delta is superior to the font's natural leading
+            if ( kAbs(fm.ascent() - curr->baseline()) > fm.leading()/2 ) {
+                int ascent = fm.ascent()+fm.leading()/2;
+                newBaseline = ascent;
+                newY += curr->baseline() - newBaseline;
+                newHeight = fm.lineSpacing();
+            }
+#endif
+            for (ShadowData* shadow = curr->object()->style()->textShadow(); shadow; shadow = shadow->next) {
+                overflowTop = kMin(overflowTop, shadow->y - shadow->blur);
+                overflowBottom = kMax(overflowBottom, shadow->y + shadow->blur);
+            }
+            if (curr->isInlineFlowBox()) {
+                newHeight += curr->object()->borderTop() + curr->object()->paddingTop() +
+                            curr->object()->borderBottom() + curr->object()->paddingBottom();
+                newY -= curr->object()->borderTop() + curr->object()->paddingTop();
+                newBaseline += curr->object()->borderTop() + curr->object()->paddingTop();
+            }
+        } else {
+            newY += curr->object()->marginTop();
+            newHeight = curr->height() - (curr->object()->marginTop() + curr->object()->marginBottom());
+            overflowTop = curr->object()->overflowTop();
+            overflowBottom = curr->object()->overflowHeight() - newHeight;
+       }
+        curr->setYPos(newY);
+        curr->setHeight(newHeight);
+        curr->setBaseline(newBaseline);
+
+        if (childAffectsTopBottomPos) {
+            topPosition = kMin(topPosition, newY + overflowTop);
+            bottomPosition = kMax(bottomPosition, newY + newHeight + overflowBottom);
+        }
+    }
+
+    if (isRootInlineBox()) {
+        const QFontMetrics &fm = object()->fontMetrics( m_firstLine );
+#ifdef APPLE_CHANGES
+        setHeight(fm.ascent()+fm.descent());
+        setYPos(yPos() + baseline() - fm.ascent());
+        setBaseline(fm.ascent());
+#else
+        if ( kAbs(fm.ascent() - baseline()) > fm.leading()/2 ) {
+            int ascent = fm.ascent()+fm.leading()/2;
+            setHeight(fm.lineSpacing());
+            setYPos(yPos() + baseline() - ascent);
+            setBaseline(ascent);
+        }
+#endif
+        if (hasTextDescendant() || strictMode) {
+            if (yPos() < topPosition)
+                topPosition = yPos();
+            if (yPos() + height() > bottomPosition)
+                bottomPosition = yPos() + height();
+        }
+    }
+}
+
+void InlineFlowBox::shrinkBoxesWithNoTextChildren(int topPos, int bottomPos)
+{
+    // First shrink our kids.
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        if (curr->object()->isPositioned())
+            continue; // Positioned placeholders don't affect calculations.
+
+        if (curr->isInlineFlowBox())
+            static_cast<InlineFlowBox*>(curr)->shrinkBoxesWithNoTextChildren(topPos, bottomPos);
+    }
+
+    // See if we have text children. If not, then we need to shrink ourselves to fit on the line.
+    if (!hasTextDescendant()) {
+        if (yPos() < topPos)
+            setYPos(topPos);
+        if (yPos() + height() > bottomPos)
+            setHeight(bottomPos - yPos());
+        if (baseline() > height())
+            setBaseline(height());
+    }
+}
+
+bool InlineFlowBox::nodeAtPoint(RenderObject::NodeInfo& i, int x, int y, int tx, int ty)
+{
+    // Check children first.
+    for (InlineBox* curr = lastChild(); curr; curr = curr->prevOnLine()) {
+        if (!curr->object()->layer() && curr->nodeAtPoint(i, x, y, tx, ty)) {
+            object()->setInnerNode(i);
+            return true;
+        }
+    }
+
+    // Now check ourselves.
+    QRect rect(tx + m_x, ty + m_y, m_width, m_height);
+    if (object()->style()->visibility() == VISIBLE && rect.contains(x, y)) {
+        object()->setInnerNode(i);
+        return true;
+    }
+
+    return false;
+}
+
+
+void InlineFlowBox::paint(RenderObject::PaintInfo& i, int tx, int ty)
+{
+    bool intersectsDamageRect = true;
+    int xPos = tx + m_x - object()->maximalOutlineSize(i.phase);
+    int w = width() + 2 * object()->maximalOutlineSize(i.phase);
+    if ((xPos >= i.r.x() + i.r.width()) || (xPos + w <= i.r.x()))
+        intersectsDamageRect = false;
+
+    if (intersectsDamageRect) {
+        if (i.phase == PaintActionOutline) {
+            // Add ourselves to the paint info struct's list of inlines that need to paint their
+            // outlines.
+            if (object()->style()->visibility() == VISIBLE && object()->style()->outlineWidth() > 0 &&
+                !object()->isInlineContinuation() && !isRootInlineBox()) {
+                if (!i.outlineObjects)
+                    i.outlineObjects = new QValueList<RenderFlow*>;
+                i.outlineObjects->append(static_cast<RenderFlow*>(object()));
+            }
+        }
+        else {
+            // 1. Paint our background and border.
+            paintBackgroundAndBorder(i, tx, ty);
+
+            // 2. Paint our underline and overline.
+            paintDecorations(i, tx, ty, false);
+        }
+    }
+
+    // 3. Paint our children.
+    for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) {
+        if (!curr->object()->layer())
+            curr->paint(i, tx, ty);
+    }
+
+    // 4. Paint our strike-through
+    if (intersectsDamageRect && i.phase != PaintActionOutline)
+        paintDecorations(i, tx, ty, true);
+}
+
+
+void InlineFlowBox::paintBackgrounds(QPainter* p, const QColor& c, const BackgroundLayer* bgLayer,
+                                     int my, int mh, int _tx, int _ty, int w, int h)
+{
+    if (!bgLayer)
+        return;
+    paintBackgrounds(p, c, bgLayer->next(), my, mh, _tx, _ty, w, h);
+    paintBackground(p, c, bgLayer, my, mh, _tx, _ty, w, h);
+}
+
+void InlineFlowBox::paintBackground(QPainter* p, const QColor& c, const BackgroundLayer* bgLayer,
+                                    int my, int mh, int _tx, int _ty, int w, int h)
+{
+    CachedImage* bg = bgLayer->backgroundImage();
+    bool hasBackgroundImage = bg && (bg->pixmap_size() == bg->valid_rect().size()) &&
+                              !bg->isTransparent() && !bg->isErrorImage();
+    if (!hasBackgroundImage || (!prevLineBox() && !nextLineBox()) || !parent())
+        object()->paintBackgroundExtended(p, c, bgLayer, my, mh, _tx, _ty, w, h, borderLeft(), borderRight(), paddingLeft(), paddingRight());
+    else {
+        // We have a background image that spans multiple lines.
+        // We need to adjust _tx and _ty by the width of all previous lines.
+        // Think of background painting on inlines as though you had one long line, a single continuous
+        // strip.  Even though that strip has been broken up across multiple lines, you still paint it
+        // as though you had one single line.  This means each line has to pick up the background where
+        // the previous line left off.
+        // FIXME: What the heck do we do with RTL here? The math we're using is obviously not right,
+        // but it isn't even clear how this should work at all.
+        int xOffsetOnLine = 0;
+        for (InlineRunBox* curr = prevLineBox(); curr; curr = curr->prevLineBox())
+            xOffsetOnLine += curr->width();
+        int startX = _tx - xOffsetOnLine;
+        int totalWidth = xOffsetOnLine;
+        for (InlineRunBox* curr = this; curr; curr = curr->nextLineBox())
+            totalWidth += curr->width();
+        p->save();
+        p->setClipRect(QRect(_tx, _ty, width(), height()), QPainter::CoordPainter);
+        object()->paintBackgroundExtended(p, c, bgLayer, my, mh, startX, _ty,
+                                          totalWidth, h, borderLeft(), borderRight(), paddingLeft(), paddingRight());
+        p->restore();
+    }
+}
+
+void InlineFlowBox::paintBackgroundAndBorder(RenderObject::PaintInfo& pI, int _tx, int _ty)
+{
+    if (object()->style()->visibility() != VISIBLE || pI.phase != PaintActionForeground)
+        return;
+
+    // Move x/y to our coordinates.
+    _tx += m_x;
+    _ty += m_y;
+
+    int w = width();
+    int h = height();
+
+    int my = kMax(_ty, pI.r.y());
+    int mh;
+    if (_ty<pI.r.y())
+        mh= kMax(0,h-(pI.r.y()-_ty));
+    else
+        mh = kMin(pI.r.height(),h);
+
+    // You can use p::first-line to specify a background. If so, the root line boxes for
+    // a line may actually have to paint a background.
+    RenderStyle* styleToUse = object()->style(m_firstLine);
+    if ((!parent() && m_firstLine && styleToUse != object()->style()) ||
+        (parent() && object()->shouldPaintBackgroundOrBorder())) {
+        QColor c = styleToUse->backgroundColor();
+        paintBackgrounds(pI.p, c, styleToUse->backgroundLayers(), my, mh, _tx, _ty, w, h);
+
+        // :first-line cannot be used to put borders on a line. Always paint borders with our
+        // non-first-line style.
+        if (parent() && object()->style()->hasBorder())
+            object()->paintBorder(pI.p, _tx, _ty, w, h, object()->style(), includeLeftEdge(), includeRightEdge());
+    }
+}
+
+static bool shouldDrawDecoration(RenderObject* obj)
+{
+    bool shouldDraw = false;
+    for (RenderObject* curr = obj->firstChild();
+         curr; curr = curr->nextSibling()) {
+        if (curr->isInlineFlow()) {
+            shouldDraw = true;
+            break;
+        }
+        else if (curr->isText() && !curr->isBR() && (curr->style()->preserveWS() ||
+                 !curr->element() || !curr->element()->containsOnlyWhitespace())) {
+            shouldDraw = true;
+            break;
+        }
+    }
+    return shouldDraw;
+}
+
+void InlineFlowBox::paintDecorations(RenderObject::PaintInfo& pI, int _tx, int _ty, bool paintedChildren)
+{
+    // Now paint our text decorations. We only do this if we aren't in quirks mode (i.e., in
+    // almost-strict mode or strict mode).
+    if (object()->style()->htmlHacks() || object()->style()->visibility() != VISIBLE)
+        return;
+
+    _tx += m_x;
+    _ty += m_y;
+    RenderStyle* styleToUse = object()->style(m_firstLine);
+    int deco = parent() ? styleToUse->textDecoration() : styleToUse->textDecorationsInEffect();
+    if (deco != TDNONE &&
+        ((!paintedChildren && ((deco & UNDERLINE) || (deco & OVERLINE))) || (paintedChildren && (deco & LINE_THROUGH))) &&
+        shouldDrawDecoration(object())) {
+        // We must have child boxes and have decorations defined.
+        _tx += borderLeft() + paddingLeft();
+        int w = m_width - (borderLeft() + paddingLeft() + borderRight() + paddingRight());
+        if ( !w )
+            return;
+        const QFontMetrics &fm = object()->fontMetrics( m_firstLine );
+        // thick lines on small fonts look ugly
+        int thickness = fm.height() > 20 ? fm.lineWidth() : 1;
+        QColor underline, overline, linethrough;
+        underline = overline = linethrough = styleToUse->color();
+        if (!parent())
+            object()->getTextDecorationColors(deco, underline, overline, linethrough);
+
+        if (styleToUse->font() != pI.p->font())
+            pI.p->setFont(styleToUse->font());
+
+        if (deco & UNDERLINE && !paintedChildren) {
+            int underlineOffset = ( fm.height() + m_baseline ) / 2;
+            if (underlineOffset <= m_baseline) underlineOffset = m_baseline+1;
+
+            pI.p->fillRect(_tx, _ty + underlineOffset, w, thickness, underline );
+        }
+        if (deco & OVERLINE && !paintedChildren) {
+            pI.p->fillRect(_tx, _ty, w, thickness, overline );
+        }
+        if (deco & LINE_THROUGH && paintedChildren) {
+            pI.p->fillRect(_tx, _ty + 2*m_baseline/3, w, thickness, linethrough );
+        }
+    }
+}
+
+bool InlineFlowBox::canAccommodateEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth)
+{
+    for (InlineBox *box = firstChild(); box; box = box->nextOnLine()) {
+        if (!box->canAccommodateEllipsisBox(ltr, blockEdge, ellipsisWidth))
+            return false;
+    }
+    return true;
+}
+
+int InlineFlowBox::placeEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth, bool& foundBox)
+{
+    int result = -1;
+    for (InlineBox *box = firstChild(); box; box = box->nextOnLine()) {
+        int currResult = box->placeEllipsisBox(ltr, blockEdge, ellipsisWidth, foundBox);
+        if (currResult != -1 && result == -1)
+            result = currResult;
+    }
+    return result;
+}
+
+void InlineFlowBox::clearTruncation()
+{
+    for (InlineBox *box = firstChild(); box; box = box->nextOnLine())
+        box->clearTruncation();
+}
+
+void EllipsisBox::paint(RenderObject::PaintInfo& i, int _tx, int _ty)
+{
+    QPainter* p = i.p;
+    RenderStyle* _style = m_firstLine ? m_object->style(true) : m_object->style();
+    if (_style->font() != p->font())
+        p->setFont(_style->font());
+
+    const Font* font = &_style->htmlFont();
+    QColor textColor = _style->color();
+    if (textColor != p->pen().color())
+        p->setPen(textColor);
+    /*
+    bool setShadow = false;
+    if (_style->textShadow()) {
+        p->setShadow(_style->textShadow()->x, _style->textShadow()->y,
+                     _style->textShadow()->blur, _style->textShadow()->color);
+        setShadow = true;
+    }*/
+
+    const DOMString& str = m_str.string();
+    font->drawText(p, m_x + _tx,
+                      m_y + _ty + m_baseline,
+                      (str.implementation())->s,
+                      str.length(), 0, str.length(),
+                      0,
+                      QPainter::LTR, _style->visuallyOrdered());
+
+    /*
+    if (setShadow)
+        p->clearShadow();
+    */
+
+    if (m_markupBox) {
+        // Paint the markup box
+        _tx += m_x + m_width - m_markupBox->xPos();
+        _ty += m_y + m_baseline - (m_markupBox->yPos() + m_markupBox->baseline());
+        m_markupBox->object()->paint(i, _tx, _ty);
+    }
+}
+
+bool EllipsisBox::nodeAtPoint(RenderObject::NodeInfo& info, int _x, int _y, int _tx, int _ty)
+{
+    // Hit test the markup box.
+    if (m_markupBox) {
+        _tx += m_x + m_width - m_markupBox->xPos();
+        _ty += m_y + m_baseline - (m_markupBox->yPos() + m_markupBox->baseline());
+        if (m_markupBox->nodeAtPoint(info, _x, _y, _tx, _ty)) {
+            object()->setInnerNode(info);
+            return true;
+        }
+    }
+
+    QRect rect(_tx + m_x, _ty + m_y, m_width, m_height);
+    if (object()->style()->visibility() == VISIBLE && rect.contains(_x, _y)) {
+        object()->setInnerNode(info);
+        return true;
+    }
+    return false;
+}
+
+void RootInlineBox::detach(RenderArena* arena)
+{
+    detachEllipsisBox(arena);
+    InlineFlowBox::detach(arena);
+}
+
+void RootInlineBox::detachEllipsisBox(RenderArena* arena)
+{
+    if (m_ellipsisBox) {
+        m_ellipsisBox->detach(arena);
+        m_ellipsisBox = 0;
+    }
+}
+
+void RootInlineBox::clearTruncation()
+{
+    if (m_ellipsisBox) {
+        detachEllipsisBox(m_object->renderArena());
+        InlineFlowBox::clearTruncation();
+    }
+}
+
+bool RootInlineBox::canAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth)
+{
+    // First sanity-check the unoverflowed width of the whole line to see if there is sufficient room.
+    int delta = ltr ? lineBoxEdge - blockEdge : blockEdge - lineBoxEdge;
+    if (width() - delta < ellipsisWidth)
+        return false;
+
+    // Next iterate over all the line boxes on the line.  If we find a replaced element that intersects
+    // then we refuse to accommodate the ellipsis.  Otherwise we're ok.
+    return InlineFlowBox::canAccommodateEllipsisBox(ltr, blockEdge, ellipsisWidth);
+}
+
+void RootInlineBox::placeEllipsis(const DOMString& ellipsisStr,  bool ltr, int blockEdge, int ellipsisWidth, InlineBox* markupBox)
+{
+    // Create an ellipsis box.
+    m_ellipsisBox = new (m_object->renderArena()) EllipsisBox(m_object, ellipsisStr, this,
+                                                              ellipsisWidth - (markupBox ? markupBox->width() : 0),
+                                                              yPos(), height(), baseline(), !prevRootBox(),
+                                                              markupBox);
+
+    if (ltr && (xPos() + width() + ellipsisWidth) <= blockEdge) {
+        m_ellipsisBox->m_x = xPos() + width();
+        return;
+    }
+
+    // Now attempt to find the nearest glyph horizontally and place just to the right (or left in RTL)
+    // of that glyph.  Mark all of the objects that intersect the ellipsis box as not painting (as being
+    // truncated).
+    bool foundBox = false;
+    m_ellipsisBox->m_x = placeEllipsisBox(ltr, blockEdge, ellipsisWidth, foundBox);
+}
+
+int RootInlineBox::placeEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth, bool& foundBox)
+{
+    int result = InlineFlowBox::placeEllipsisBox(ltr, blockEdge, ellipsisWidth, foundBox);
+    if (result == -1)
+        result = ltr ? blockEdge - ellipsisWidth : blockEdge;
+    return result;
+}
+
+void RootInlineBox::paintEllipsisBox(RenderObject::PaintInfo& i, int _tx, int _ty) const
+{
+    if (m_ellipsisBox)
+        m_ellipsisBox->paint(i, _tx, _ty);
+}
+
+void RootInlineBox::paint(RenderObject::PaintInfo& i, int tx, int ty)
+{
+    InlineFlowBox::paint(i, tx, ty);
+    paintEllipsisBox(i, tx, ty);
+}
+
+bool RootInlineBox::nodeAtPoint(RenderObject::NodeInfo& i, int x, int y, int tx, int ty)
+{
+    if (m_ellipsisBox && object()->style()->visibility() == VISIBLE) {
+        if (m_ellipsisBox->nodeAtPoint(i, x, y, tx, ty)) {
+            object()->setInnerNode(i);
+            return true;
+        }
+    }
+    return InlineFlowBox::nodeAtPoint(i, x, y, tx, ty);
+}
+