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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch)
tree5ac38a06f3dde268dc7927dc155896926aaf7012 /khtml/rendering/render_line.cpp
downloadtdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz
tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip
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
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diff --git a/khtml/rendering/render_line.cpp b/khtml/rendering/render_line.cpp
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+/**
+* 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);
+}
+