| /* |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * |
| * 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 "config.h" |
| #include "InlineFlowBox.h" |
| |
| #include "CachedImage.h" |
| #include "Document.h" |
| #include "EllipsisBox.h" |
| #include "GraphicsContext.h" |
| #include "InlineTextBox.h" |
| #include "HitTestResult.h" |
| #include "RootInlineBox.h" |
| #include "RenderBlock.h" |
| #include "RenderInline.h" |
| #include "RenderLayer.h" |
| #include "RenderListMarker.h" |
| #include "RenderTableCell.h" |
| #include "RootInlineBox.h" |
| #include "Text.h" |
| |
| #include <math.h> |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| #ifndef NDEBUG |
| |
| InlineFlowBox::~InlineFlowBox() |
| { |
| if (!m_hasBadChildList) |
| for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) |
| child->setHasBadParent(); |
| } |
| |
| #endif |
| |
| int InlineFlowBox::getFlowSpacingWidth() |
| { |
| int totWidth = marginBorderPaddingLeft() + marginBorderPaddingRight(); |
| for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) { |
| if (curr->isInlineFlowBox()) |
| totWidth += static_cast<InlineFlowBox*>(curr)->getFlowSpacingWidth(); |
| } |
| return totWidth; |
| } |
| |
| void InlineFlowBox::addToLine(InlineBox* child) |
| { |
| ASSERT(!child->parent()); |
| ASSERT(!child->nextOnLine()); |
| ASSERT(!child->prevOnLine()); |
| checkConsistency(); |
| |
| child->setParent(this); |
| if (!m_firstChild) { |
| m_firstChild = child; |
| m_lastChild = child; |
| } else { |
| m_lastChild->setNextOnLine(child); |
| child->setPrevOnLine(m_lastChild); |
| m_lastChild = child; |
| } |
| child->setFirstLineStyleBit(m_firstLine); |
| if (child->isText()) |
| m_hasTextChildren = true; |
| if (child->renderer()->selectionState() != RenderObject::SelectionNone) |
| root()->setHasSelectedChildren(true); |
| |
| checkConsistency(); |
| } |
| |
| void InlineFlowBox::removeChild(InlineBox* child) |
| { |
| checkConsistency(); |
| |
| if (!m_dirty) |
| dirtyLineBoxes(); |
| |
| root()->childRemoved(child); |
| |
| if (child == m_firstChild) |
| m_firstChild = child->nextOnLine(); |
| if (child == m_lastChild) |
| m_lastChild = child->prevOnLine(); |
| if (child->nextOnLine()) |
| child->nextOnLine()->setPrevOnLine(child->prevOnLine()); |
| if (child->prevOnLine()) |
| child->prevOnLine()->setNextOnLine(child->nextOnLine()); |
| |
| child->setParent(0); |
| |
| checkConsistency(); |
| } |
| |
| void InlineFlowBox::deleteLine(RenderArena* arena) |
| { |
| InlineBox* child = firstChild(); |
| InlineBox* next = 0; |
| while (child) { |
| ASSERT(this == child->parent()); |
| next = child->nextOnLine(); |
| #ifndef NDEBUG |
| child->setParent(0); |
| #endif |
| child->deleteLine(arena); |
| child = next; |
| } |
| #ifndef NDEBUG |
| m_firstChild = 0; |
| m_lastChild = 0; |
| #endif |
| |
| removeLineBoxFromRenderObject(); |
| destroy(arena); |
| } |
| |
| void InlineFlowBox::removeLineBoxFromRenderObject() |
| { |
| toRenderInline(renderer())->lineBoxes()->removeLineBox(this); |
| } |
| |
| void InlineFlowBox::extractLine() |
| { |
| if (!m_extracted) |
| extractLineBoxFromRenderObject(); |
| for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) |
| child->extractLine(); |
| } |
| |
| void InlineFlowBox::extractLineBoxFromRenderObject() |
| { |
| toRenderInline(renderer())->lineBoxes()->extractLineBox(this); |
| } |
| |
| void InlineFlowBox::attachLine() |
| { |
| if (m_extracted) |
| attachLineBoxToRenderObject(); |
| for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) |
| child->attachLine(); |
| } |
| |
| void InlineFlowBox::attachLineBoxToRenderObject() |
| { |
| toRenderInline(renderer())->lineBoxes()->attachLineBox(this); |
| } |
| |
| void InlineFlowBox::adjustPosition(int dx, int dy) |
| { |
| InlineBox::adjustPosition(dx, dy); |
| for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) |
| child->adjustPosition(dx, dy); |
| if (m_overflow) |
| m_overflow->move(dx, dy); |
| } |
| |
| RenderLineBoxList* InlineFlowBox::rendererLineBoxes() const |
| { |
| return toRenderInline(renderer())->lineBoxes(); |
| } |
| |
| bool InlineFlowBox::onEndChain(RenderObject* endObject) |
| { |
| if (!endObject) |
| return false; |
| |
| if (endObject == renderer()) |
| return true; |
| |
| RenderObject* curr = endObject; |
| RenderObject* parent = curr->parent(); |
| while (parent && !parent->isRenderBlock()) { |
| if (parent->lastChild() != curr || parent == renderer()) |
| 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; |
| |
| // The root inline box never has borders/margins/padding. |
| if (parent()) { |
| bool ltr = renderer()->style()->direction() == LTR; |
| |
| // Check to see if all initial lines are unconstructed. If so, then |
| // we know the inline began on this line (unless we are a continuation). |
| RenderLineBoxList* lineBoxList = rendererLineBoxes(); |
| if (!lineBoxList->firstLineBox()->isConstructed() && !renderer()->isInlineContinuation()) { |
| if (ltr && lineBoxList->firstLineBox() == this) |
| includeLeftEdge = true; |
| else if (!ltr && lineBoxList->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 (!lineBoxList->lastLineBox()->isConstructed()) { |
| RenderInline* inlineFlow = toRenderInline(renderer()); |
| if (ltr) { |
| if (!nextLineBox() && |
| ((lastLine && !inlineFlow->continuation()) || nextOnLineExists() || onEndChain(endObject))) |
| includeRightEdge = true; |
| } else { |
| if ((!prevLineBox() || prevLineBox()->isConstructed()) && |
| ((lastLine && !inlineFlow->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 xPos, bool& needsWordSpacing) |
| { |
| // Set our x position. |
| setX(xPos); |
| |
| int leftLayoutOverflow = xPos; |
| int rightLayoutOverflow = xPos; |
| int leftVisualOverflow = xPos; |
| int rightVisualOverflow = xPos; |
| |
| int boxShadowLeft; |
| int boxShadowRight; |
| renderer()->style(m_firstLine)->getBoxShadowHorizontalExtent(boxShadowLeft, boxShadowRight); |
| |
| leftVisualOverflow = min(xPos + boxShadowLeft, leftVisualOverflow); |
| |
| int startX = xPos; |
| xPos += borderLeft() + paddingLeft(); |
| |
| for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) { |
| if (curr->renderer()->isText()) { |
| InlineTextBox* text = static_cast<InlineTextBox*>(curr); |
| RenderText* rt = toRenderText(text->renderer()); |
| if (rt->textLength()) { |
| if (needsWordSpacing && isSpaceOrNewline(rt->characters()[text->start()])) |
| xPos += rt->style(m_firstLine)->font().wordSpacing(); |
| needsWordSpacing = !isSpaceOrNewline(rt->characters()[text->end()]); |
| } |
| text->setX(xPos); |
| |
| int strokeOverflow = static_cast<int>(ceilf(rt->style()->textStrokeWidth() / 2.0f)); |
| |
| // If letter-spacing is negative, we should factor that into right layout overflow. (Even in RTL, letter-spacing is |
| // applied to the right, so this is not an issue with left overflow. |
| int letterSpacing = min(0, (int)rt->style(m_firstLine)->font().letterSpacing()); |
| rightLayoutOverflow = max(xPos + text->width() - letterSpacing, rightLayoutOverflow); |
| |
| GlyphOverflow* glyphOverflow = static_cast<InlineTextBox*>(curr)->glyphOverflow(); |
| |
| int leftGlyphOverflow = -strokeOverflow - (glyphOverflow ? glyphOverflow->left : 0); |
| int rightGlyphOverflow = strokeOverflow - letterSpacing + (glyphOverflow ? glyphOverflow->right : 0); |
| |
| int childOverflowLeft = leftGlyphOverflow; |
| int childOverflowRight = rightGlyphOverflow; |
| for (ShadowData* shadow = rt->style()->textShadow(); shadow; shadow = shadow->next) { |
| childOverflowLeft = min(childOverflowLeft, shadow->x - shadow->blur + leftGlyphOverflow); |
| childOverflowRight = max(childOverflowRight, shadow->x + shadow->blur + rightGlyphOverflow); |
| } |
| |
| leftVisualOverflow = min(xPos + childOverflowLeft, leftVisualOverflow); |
| rightVisualOverflow = max(xPos + text->width() + childOverflowRight, rightVisualOverflow); |
| |
| xPos += text->width(); |
| } else { |
| if (curr->renderer()->isPositioned()) { |
| if (curr->renderer()->parent()->style()->direction() == LTR) |
| curr->setX(xPos); |
| 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 from the root line box). |
| curr->setX(root()->block()->width() - xPos); |
| continue; // The positioned object has no effect on the width. |
| } |
| if (curr->renderer()->isRenderInline()) { |
| InlineFlowBox* flow = static_cast<InlineFlowBox*>(curr); |
| xPos += flow->marginLeft(); |
| xPos = flow->placeBoxesHorizontally(xPos, needsWordSpacing); |
| xPos += flow->marginRight(); |
| leftLayoutOverflow = min(leftLayoutOverflow, flow->leftLayoutOverflow()); |
| rightLayoutOverflow = max(rightLayoutOverflow, flow->rightLayoutOverflow()); |
| leftVisualOverflow = min(leftVisualOverflow, flow->leftVisualOverflow()); |
| rightVisualOverflow = max(rightVisualOverflow, flow->rightVisualOverflow()); |
| } else if (!curr->renderer()->isListMarker() || toRenderListMarker(curr->renderer())->isInside()) { |
| xPos += curr->boxModelObject()->marginLeft(); |
| curr->setX(xPos); |
| |
| RenderBox* box = toRenderBox(curr->renderer()); |
| int childLeftOverflow = box->hasOverflowClip() ? 0 : box->leftLayoutOverflow(); |
| int childRightOverflow = box->hasOverflowClip() ? curr->width() : box->rightLayoutOverflow(); |
| |
| leftLayoutOverflow = min(xPos + childLeftOverflow, leftLayoutOverflow); |
| rightLayoutOverflow = max(xPos + childRightOverflow, rightLayoutOverflow); |
| |
| leftVisualOverflow = min(xPos + box->leftVisualOverflow(), leftVisualOverflow); |
| rightVisualOverflow = max(xPos + box->rightVisualOverflow(), rightVisualOverflow); |
| |
| xPos += curr->width() + curr->boxModelObject()->marginRight(); |
| } |
| } |
| } |
| |
| xPos += borderRight() + paddingRight(); |
| setWidth(xPos - startX); |
| rightVisualOverflow = max(x() + width() + boxShadowRight, rightVisualOverflow); |
| rightLayoutOverflow = max(x() + width(), rightLayoutOverflow); |
| |
| setHorizontalOverflowPositions(leftLayoutOverflow, rightLayoutOverflow, leftVisualOverflow, rightVisualOverflow); |
| return xPos; |
| } |
| |
| 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 |
| if (curr->renderer()->isPositioned()) |
| continue; // Positioned placeholders don't affect calculations. |
| if (curr->y() == PositionTop || curr->y() == PositionBottom) { |
| int lineHeight = curr->lineHeight(false); |
| if (curr->y() == PositionTop) { |
| if (maxAscent + maxDescent < lineHeight) |
| maxDescent = lineHeight - maxAscent; |
| } |
| else { |
| if (maxAscent + maxDescent < lineHeight) |
| maxAscent = lineHeight - maxDescent; |
| } |
| |
| if (maxAscent + maxDescent >= max(maxPositionTop, maxPositionBottom)) |
| break; |
| } |
| |
| if (curr->isInlineFlowBox()) |
| static_cast<InlineFlowBox*>(curr)->adjustMaxAscentAndDescent(maxAscent, maxDescent, maxPositionTop, maxPositionBottom); |
| } |
| } |
| |
| static int verticalPositionForBox(InlineBox* curr, bool firstLine) |
| { |
| if (curr->renderer()->isText()) |
| return curr->parent()->y(); |
| if (curr->renderer()->isBox()) |
| return toRenderBox(curr->renderer())->verticalPosition(firstLine); |
| return toRenderInline(curr->renderer())->verticalPositionFromCache(firstLine); |
| } |
| |
| void InlineFlowBox::computeLogicalBoxHeights(int& maxPositionTop, int& maxPositionBottom, |
| int& maxAscent, int& maxDescent, bool strictMode) |
| { |
| if (isRootInlineBox()) { |
| // Examine our root box. |
| int height = lineHeight(true); |
| int baseline = baselinePosition(true); |
| 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->renderer()->isPositioned()) |
| continue; // Positioned placeholders don't affect calculations. |
| |
| bool isInlineFlow = curr->isInlineFlowBox(); |
| |
| int lineHeight; |
| int baseline; |
| Vector<const SimpleFontData*>* usedFonts = 0; |
| if (curr->isInlineTextBox()) |
| usedFonts = static_cast<InlineTextBox*>(curr)->fallbackFonts(); |
| |
| if (usedFonts) { |
| usedFonts->append(curr->renderer()->style(m_firstLine)->font().primaryFont()); |
| Length parentLineHeight = curr->renderer()->parent()->style()->lineHeight(); |
| if (parentLineHeight.isNegative()) { |
| int baselineToBottom = 0; |
| baseline = 0; |
| for (size_t i = 0; i < usedFonts->size(); ++i) { |
| int halfLeading = (usedFonts->at(i)->lineSpacing() - usedFonts->at(i)->ascent() - usedFonts->at(i)->descent()) / 2; |
| baseline = max(baseline, halfLeading + usedFonts->at(i)->ascent()); |
| baselineToBottom = max(baselineToBottom, usedFonts->at(i)->lineSpacing() - usedFonts->at(i)->ascent() - usedFonts->at(i)->descent() - halfLeading); |
| } |
| lineHeight = baseline + baselineToBottom; |
| } else if (parentLineHeight.isPercent()) { |
| lineHeight = parentLineHeight.calcMinValue(curr->renderer()->style()->fontSize()); |
| baseline = 0; |
| for (size_t i = 0; i < usedFonts->size(); ++i) { |
| int halfLeading = (lineHeight - usedFonts->at(i)->ascent() - usedFonts->at(i)->descent()) / 2; |
| baseline = max(baseline, halfLeading + usedFonts->at(i)->ascent()); |
| } |
| } else { |
| lineHeight = parentLineHeight.value(); |
| baseline = 0; |
| for (size_t i = 0; i < usedFonts->size(); ++i) { |
| int halfLeading = (lineHeight - usedFonts->at(i)->ascent() - usedFonts->at(i)->descent()) / 2; |
| baseline = max(baseline, halfLeading + usedFonts->at(i)->ascent()); |
| } |
| } |
| } else { |
| lineHeight = curr->lineHeight(false); |
| baseline = curr->baselinePosition(false); |
| } |
| |
| curr->setY(verticalPositionForBox(curr, m_firstLine)); |
| if (curr->y() == PositionTop) { |
| if (maxPositionTop < lineHeight) |
| maxPositionTop = lineHeight; |
| } else if (curr->y() == PositionBottom) { |
| if (maxPositionBottom < lineHeight) |
| maxPositionBottom = lineHeight; |
| } else if ((!isInlineFlow || static_cast<InlineFlowBox*>(curr)->hasTextChildren()) || curr->boxModelObject()->hasHorizontalBordersOrPadding() || strictMode) { |
| int ascent = baseline - curr->y(); |
| int descent = lineHeight - 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 yPos, int maxHeight, int maxAscent, bool strictMode, int& selectionTop, int& selectionBottom) |
| { |
| if (isRootInlineBox()) |
| setY(yPos + maxAscent - baselinePosition(true)); // Place our root box. |
| |
| for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) { |
| if (curr->renderer()->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). |
| bool isInlineFlow = curr->isInlineFlowBox(); |
| if (isInlineFlow) |
| static_cast<InlineFlowBox*>(curr)->placeBoxesVertically(yPos, maxHeight, maxAscent, strictMode, selectionTop, selectionBottom); |
| |
| bool childAffectsTopBottomPos = true; |
| if (curr->y() == PositionTop) |
| curr->setY(yPos); |
| else if (curr->y() == PositionBottom) |
| curr->setY(yPos + maxHeight - curr->lineHeight(false)); |
| else { |
| if ((isInlineFlow && !static_cast<InlineFlowBox*>(curr)->hasTextChildren()) && !curr->boxModelObject()->hasHorizontalBordersOrPadding() && !strictMode) |
| childAffectsTopBottomPos = false; |
| int posAdjust = maxAscent - curr->baselinePosition(false); |
| curr->setY(curr->y() + yPos + posAdjust); |
| } |
| |
| int newY = curr->y(); |
| if (curr->isText() || curr->isInlineFlowBox()) { |
| const Font& font = curr->renderer()->style(m_firstLine)->font(); |
| newY += curr->baselinePosition(false) - font.ascent(); |
| if (curr->isInlineFlowBox()) |
| newY -= curr->boxModelObject()->borderTop() + curr->boxModelObject()->paddingTop(); |
| } else if (!curr->renderer()->isBR()) { |
| RenderBox* box = toRenderBox(curr->renderer()); |
| newY += box->marginTop(); |
| } |
| |
| curr->setY(newY); |
| |
| if (childAffectsTopBottomPos) { |
| int boxHeight = curr->height(); |
| selectionTop = min(selectionTop, newY); |
| selectionBottom = max(selectionBottom, newY + boxHeight); |
| } |
| } |
| |
| if (isRootInlineBox()) { |
| const Font& font = renderer()->style(m_firstLine)->font(); |
| setY(y() + baselinePosition(true) - font.ascent()); |
| if (hasTextChildren() || strictMode) { |
| selectionTop = min(selectionTop, y()); |
| selectionBottom = max(selectionBottom, y() + height()); |
| } |
| } |
| } |
| |
| void InlineFlowBox::computeVerticalOverflow(int lineTop, int lineBottom, bool strictMode) |
| { |
| int boxHeight = height(); |
| |
| // Any spillage outside of the line top and bottom is not considered overflow. We just ignore this, since it only happens |
| // from the "your ascent/descent don't affect the line" quirk. |
| int topOverflow = max(y(), lineTop); |
| int bottomOverflow = min(y() + boxHeight, lineBottom); |
| |
| int topLayoutOverflow = topOverflow; |
| int bottomLayoutOverflow = bottomOverflow; |
| |
| int topVisualOverflow = topOverflow; |
| int bottomVisualOverflow = bottomOverflow; |
| |
| // box-shadow on root line boxes is applying to the block and not to the lines. |
| if (parent()) { |
| int boxShadowTop; |
| int boxShadowBottom; |
| renderer()->style(m_firstLine)->getBoxShadowVerticalExtent(boxShadowTop, boxShadowBottom); |
| |
| topVisualOverflow = min(y() + boxShadowTop, topVisualOverflow); |
| bottomVisualOverflow = max(y() + boxHeight + boxShadowBottom, bottomVisualOverflow); |
| } |
| |
| for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) { |
| if (curr->renderer()->isPositioned()) |
| continue; // Positioned placeholders don't affect calculations. |
| |
| if (curr->renderer()->isText()) { |
| InlineTextBox* text = static_cast<InlineTextBox*>(curr); |
| RenderText* rt = toRenderText(text->renderer()); |
| if (rt->isBR()) |
| continue; |
| |
| int strokeOverflow = static_cast<int>(ceilf(rt->style()->textStrokeWidth() / 2.0f)); |
| |
| GlyphOverflow* glyphOverflow = static_cast<InlineTextBox*>(curr)->glyphOverflow(); |
| |
| int topGlyphOverflow = -strokeOverflow - (glyphOverflow ? glyphOverflow->top : 0); |
| int bottomGlyphOverflow = strokeOverflow + (glyphOverflow ? glyphOverflow->bottom : 0); |
| |
| int childOverflowTop = topGlyphOverflow; |
| int childOverflowBottom = bottomGlyphOverflow; |
| for (ShadowData* shadow = rt->style()->textShadow(); shadow; shadow = shadow->next) { |
| childOverflowTop = min(childOverflowTop, shadow->y - shadow->blur + topGlyphOverflow); |
| childOverflowBottom = max(childOverflowBottom, shadow->y + shadow->blur + bottomGlyphOverflow); |
| } |
| |
| topVisualOverflow = min(curr->y() + childOverflowTop, topVisualOverflow); |
| bottomVisualOverflow = max(curr->y() + text->height() + childOverflowBottom, bottomVisualOverflow); |
| } else if (curr->renderer()->isRenderInline()) { |
| InlineFlowBox* flow = static_cast<InlineFlowBox*>(curr); |
| flow->computeVerticalOverflow(lineTop, lineBottom, strictMode); |
| topLayoutOverflow = min(topLayoutOverflow, flow->topLayoutOverflow()); |
| bottomLayoutOverflow = max(bottomLayoutOverflow, flow->bottomLayoutOverflow()); |
| topVisualOverflow = min(topVisualOverflow, flow->topVisualOverflow()); |
| bottomVisualOverflow = max(bottomVisualOverflow, flow->bottomVisualOverflow()); |
| } else if (!curr->boxModelObject()->hasSelfPaintingLayer()){ |
| // Only include overflow from replaced inlines if they do not paint themselves. |
| RenderBox* box = toRenderBox(curr->renderer()); |
| int boxY = curr->y(); |
| int childTopOverflow = box->hasOverflowClip() ? 0 : box->topLayoutOverflow(); |
| int childBottomOverflow = box->hasOverflowClip() ? curr->height() : box->bottomLayoutOverflow(); |
| topLayoutOverflow = min(boxY + childTopOverflow, topLayoutOverflow); |
| bottomLayoutOverflow = max(boxY + childBottomOverflow, bottomLayoutOverflow); |
| topVisualOverflow = min(boxY + box->topVisualOverflow(), topVisualOverflow); |
| bottomVisualOverflow = max(boxY + box->bottomVisualOverflow(), bottomVisualOverflow); |
| } |
| } |
| |
| setVerticalOverflowPositions(topLayoutOverflow, bottomLayoutOverflow, topVisualOverflow, bottomVisualOverflow, boxHeight); |
| } |
| |
| bool InlineFlowBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty) |
| { |
| IntRect overflowRect(visibleOverflowRect()); |
| overflowRect.move(tx, ty); |
| if (!overflowRect.contains(x, y)) |
| return false; |
| |
| // Check children first. |
| for (InlineBox* curr = lastChild(); curr; curr = curr->prevOnLine()) { |
| if ((curr->renderer()->isText() || !curr->boxModelObject()->hasSelfPaintingLayer()) && curr->nodeAtPoint(request, result, x, y, tx, ty)) { |
| renderer()->updateHitTestResult(result, IntPoint(x - tx, y - ty)); |
| return true; |
| } |
| } |
| |
| // Now check ourselves. |
| IntRect rect(tx + m_x, ty + m_y, m_width, height()); |
| if (visibleToHitTesting() && rect.contains(x, y)) { |
| renderer()->updateHitTestResult(result, IntPoint(x - tx, y - ty)); // Don't add in m_x or m_y here, we want coords in the containing block's space. |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void InlineFlowBox::paint(RenderObject::PaintInfo& paintInfo, int tx, int ty) |
| { |
| IntRect overflowRect(visibleOverflowRect()); |
| overflowRect.inflate(renderer()->maximalOutlineSize(paintInfo.phase)); |
| overflowRect.move(tx, ty); |
| |
| if (!paintInfo.rect.intersects(overflowRect)) |
| return; |
| |
| if (paintInfo.phase != PaintPhaseChildOutlines) { |
| if (paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) { |
| // Add ourselves to the paint info struct's list of inlines that need to paint their |
| // outlines. |
| if (renderer()->style()->visibility() == VISIBLE && renderer()->hasOutline() && !isRootInlineBox()) { |
| RenderInline* inlineFlow = toRenderInline(renderer()); |
| if ((inlineFlow->continuation() || inlineFlow->isInlineContinuation()) && !boxModelObject()->hasSelfPaintingLayer()) { |
| // Add ourselves to the containing block of the entire continuation so that it can |
| // paint us atomically. |
| RenderBlock* block = renderer()->containingBlock()->containingBlock(); |
| block->addContinuationWithOutline(toRenderInline(renderer()->node()->renderer())); |
| } else if (!inlineFlow->isInlineContinuation()) |
| paintInfo.outlineObjects->add(inlineFlow); |
| } |
| } else if (paintInfo.phase == PaintPhaseMask) { |
| paintMask(paintInfo, tx, ty); |
| return; |
| } else { |
| // 1. Paint our background, border and box-shadow. |
| paintBoxDecorations(paintInfo, tx, ty); |
| |
| // 2. Paint our underline and overline. |
| paintTextDecorations(paintInfo, tx, ty, false); |
| } |
| } |
| |
| if (paintInfo.phase == PaintPhaseMask) |
| return; |
| |
| PaintPhase paintPhase = paintInfo.phase == PaintPhaseChildOutlines ? PaintPhaseOutline : paintInfo.phase; |
| RenderObject::PaintInfo childInfo(paintInfo); |
| childInfo.phase = paintPhase; |
| childInfo.paintingRoot = renderer()->paintingRootForChildren(paintInfo); |
| |
| // 3. Paint our children. |
| if (paintPhase != PaintPhaseSelfOutline) { |
| for (InlineBox* curr = firstChild(); curr; curr = curr->nextOnLine()) { |
| if (curr->renderer()->isText() || !curr->boxModelObject()->hasSelfPaintingLayer()) |
| curr->paint(childInfo, tx, ty); |
| } |
| } |
| |
| // 4. Paint our strike-through |
| if (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection) |
| paintTextDecorations(paintInfo, tx, ty, true); |
| } |
| |
| void InlineFlowBox::paintFillLayers(const RenderObject::PaintInfo& paintInfo, const Color& c, const FillLayer* fillLayer, int _tx, int _ty, int w, int h, CompositeOperator op) |
| { |
| if (!fillLayer) |
| return; |
| paintFillLayers(paintInfo, c, fillLayer->next(), _tx, _ty, w, h, op); |
| paintFillLayer(paintInfo, c, fillLayer, _tx, _ty, w, h, op); |
| } |
| |
| void InlineFlowBox::paintFillLayer(const RenderObject::PaintInfo& paintInfo, const Color& c, const FillLayer* fillLayer, int tx, int ty, int w, int h, CompositeOperator op) |
| { |
| StyleImage* img = fillLayer->image(); |
| bool hasFillImage = img && img->canRender(renderer()->style()->effectiveZoom()); |
| if ((!hasFillImage && !renderer()->style()->hasBorderRadius()) || (!prevLineBox() && !nextLineBox()) || !parent()) |
| boxModelObject()->paintFillLayerExtended(paintInfo, c, fillLayer, tx, ty, w, h, this, op); |
| else { |
| // We have a fill 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 (InlineFlowBox* curr = prevLineBox(); curr; curr = curr->prevLineBox()) |
| xOffsetOnLine += curr->width(); |
| int startX = tx - xOffsetOnLine; |
| int totalWidth = xOffsetOnLine; |
| for (InlineFlowBox* curr = this; curr; curr = curr->nextLineBox()) |
| totalWidth += curr->width(); |
| paintInfo.context->save(); |
| paintInfo.context->clip(IntRect(tx, ty, width(), height())); |
| boxModelObject()->paintFillLayerExtended(paintInfo, c, fillLayer, startX, ty, totalWidth, h, this, op); |
| paintInfo.context->restore(); |
| } |
| } |
| |
| void InlineFlowBox::paintBoxShadow(GraphicsContext* context, RenderStyle* s, ShadowStyle shadowStyle, int tx, int ty, int w, int h) |
| { |
| if ((!prevLineBox() && !nextLineBox()) || !parent()) |
| boxModelObject()->paintBoxShadow(context, tx, ty, w, h, s, shadowStyle); |
| else { |
| // FIXME: We can do better here in the multi-line case. We want to push a clip so that the shadow doesn't |
| // protrude incorrectly at the edges, and we want to possibly include shadows cast from the previous/following lines |
| boxModelObject()->paintBoxShadow(context, tx, ty, w, h, s, shadowStyle, includeLeftEdge(), includeRightEdge()); |
| } |
| } |
| |
| void InlineFlowBox::paintBoxDecorations(RenderObject::PaintInfo& paintInfo, int tx, int ty) |
| { |
| if (!renderer()->shouldPaintWithinRoot(paintInfo) || renderer()->style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseForeground) |
| return; |
| |
| int x = m_x; |
| int y = m_y; |
| int w = width(); |
| int h = height(); |
| |
| // Constrain our background/border painting to the line top and bottom if necessary. |
| bool strictMode = renderer()->document()->inStrictMode(); |
| if (!hasTextChildren() && !strictMode) { |
| RootInlineBox* rootBox = root(); |
| int bottom = min(rootBox->lineBottom(), y + h); |
| y = max(rootBox->lineTop(), y); |
| h = bottom - y; |
| } |
| |
| // Move x/y to our coordinates. |
| tx += x; |
| ty += y; |
| |
| GraphicsContext* context = paintInfo.context; |
| |
| // 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 = renderer()->style(m_firstLine); |
| if ((!parent() && m_firstLine && styleToUse != renderer()->style()) || (parent() && renderer()->hasBoxDecorations())) { |
| // Shadow comes first and is behind the background and border. |
| if (styleToUse->boxShadow()) |
| paintBoxShadow(context, styleToUse, Normal, tx, ty, w, h); |
| |
| Color c = styleToUse->backgroundColor(); |
| paintFillLayers(paintInfo, c, styleToUse->backgroundLayers(), tx, ty, w, h); |
| |
| if (styleToUse->boxShadow()) |
| paintBoxShadow(context, styleToUse, Inset, 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() && renderer()->style()->hasBorder()) { |
| StyleImage* borderImage = renderer()->style()->borderImage().image(); |
| bool hasBorderImage = borderImage && borderImage->canRender(styleToUse->effectiveZoom()); |
| if (hasBorderImage && !borderImage->isLoaded()) |
| return; // Don't paint anything while we wait for the image to load. |
| |
| // The simple case is where we either have no border image or we are the only box for this object. In those |
| // cases only a single call to draw is required. |
| if (!hasBorderImage || (!prevLineBox() && !nextLineBox())) |
| boxModelObject()->paintBorder(context, tx, ty, w, h, renderer()->style(), includeLeftEdge(), includeRightEdge()); |
| else { |
| // We have a border image that spans multiple lines. |
| // We need to adjust _tx and _ty by the width of all previous lines. |
| // Think of border image 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 image 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 (InlineFlowBox* curr = prevLineBox(); curr; curr = curr->prevLineBox()) |
| xOffsetOnLine += curr->width(); |
| int startX = tx - xOffsetOnLine; |
| int totalWidth = xOffsetOnLine; |
| for (InlineFlowBox* curr = this; curr; curr = curr->nextLineBox()) |
| totalWidth += curr->width(); |
| context->save(); |
| context->clip(IntRect(tx, ty, w, h)); |
| boxModelObject()->paintBorder(context, startX, ty, totalWidth, h, renderer()->style()); |
| context->restore(); |
| } |
| } |
| } |
| } |
| |
| void InlineFlowBox::paintMask(RenderObject::PaintInfo& paintInfo, int tx, int ty) |
| { |
| if (!renderer()->shouldPaintWithinRoot(paintInfo) || renderer()->style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask) |
| return; |
| |
| int x = m_x; |
| int y = m_y; |
| int w = width(); |
| int h = height(); |
| |
| // Constrain our background/border painting to the line top and bottom if necessary. |
| bool strictMode = renderer()->document()->inStrictMode(); |
| if (!hasTextChildren() && !strictMode) { |
| RootInlineBox* rootBox = root(); |
| int bottom = min(rootBox->lineBottom(), y + h); |
| y = max(rootBox->lineTop(), y); |
| h = bottom - y; |
| } |
| |
| // Move x/y to our coordinates. |
| tx += x; |
| ty += y; |
| |
| const NinePieceImage& maskNinePieceImage = renderer()->style()->maskBoxImage(); |
| StyleImage* maskBoxImage = renderer()->style()->maskBoxImage().image(); |
| |
| // Figure out if we need to push a transparency layer to render our mask. |
| bool pushTransparencyLayer = false; |
| bool compositedMask = renderer()->hasLayer() && boxModelObject()->layer()->hasCompositedMask(); |
| CompositeOperator compositeOp = CompositeSourceOver; |
| if (!compositedMask) { |
| if ((maskBoxImage && renderer()->style()->maskLayers()->hasImage()) || renderer()->style()->maskLayers()->next()) |
| pushTransparencyLayer = true; |
| |
| compositeOp = CompositeDestinationIn; |
| if (pushTransparencyLayer) { |
| paintInfo.context->setCompositeOperation(CompositeDestinationIn); |
| paintInfo.context->beginTransparencyLayer(1.0f); |
| compositeOp = CompositeSourceOver; |
| } |
| } |
| |
| paintFillLayers(paintInfo, Color(), renderer()->style()->maskLayers(), tx, ty, w, h, compositeOp); |
| |
| bool hasBoxImage = maskBoxImage && maskBoxImage->canRender(renderer()->style()->effectiveZoom()); |
| if (!hasBoxImage || !maskBoxImage->isLoaded()) |
| return; // Don't paint anything while we wait for the image to load. |
| |
| // The simple case is where we are the only box for this object. In those |
| // cases only a single call to draw is required. |
| if (!prevLineBox() && !nextLineBox()) { |
| boxModelObject()->paintNinePieceImage(paintInfo.context, tx, ty, w, h, renderer()->style(), maskNinePieceImage, compositeOp); |
| } else { |
| // We have a mask image that spans multiple lines. |
| // We need to adjust _tx and _ty by the width of all previous lines. |
| int xOffsetOnLine = 0; |
| for (InlineFlowBox* curr = prevLineBox(); curr; curr = curr->prevLineBox()) |
| xOffsetOnLine += curr->width(); |
| int startX = tx - xOffsetOnLine; |
| int totalWidth = xOffsetOnLine; |
| for (InlineFlowBox* curr = this; curr; curr = curr->nextLineBox()) |
| totalWidth += curr->width(); |
| paintInfo.context->save(); |
| paintInfo.context->clip(IntRect(tx, ty, w, h)); |
| boxModelObject()->paintNinePieceImage(paintInfo.context, startX, ty, totalWidth, h, renderer()->style(), maskNinePieceImage, compositeOp); |
| paintInfo.context->restore(); |
| } |
| |
| if (pushTransparencyLayer) |
| paintInfo.context->endTransparencyLayer(); |
| } |
| |
| static bool shouldDrawTextDecoration(RenderObject* obj) |
| { |
| for (RenderObject* curr = obj->firstChild(); curr; curr = curr->nextSibling()) { |
| if (curr->isRenderInline()) |
| return true; |
| if (curr->isText() && !curr->isBR()) { |
| if (!curr->style()->collapseWhiteSpace()) |
| return true; |
| Node* currElement = curr->node(); |
| if (!currElement) |
| return true; |
| if (!currElement->isTextNode()) |
| return true; |
| if (!static_cast<Text*>(currElement)->containsOnlyWhitespace()) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void InlineFlowBox::paintTextDecorations(RenderObject::PaintInfo& paintInfo, int tx, int ty, bool paintedChildren) |
| { |
| // Paint text decorations like underlines/overlines. We only do this if we aren't in quirks mode (i.e., in |
| // almost-strict mode or strict mode). |
| if (renderer()->style()->htmlHacks() || !renderer()->shouldPaintWithinRoot(paintInfo) || |
| renderer()->style()->visibility() != VISIBLE) |
| return; |
| |
| // We don't want underlines or other decorations when we're trying to draw nothing but the selection as white text. |
| if (paintInfo.phase == PaintPhaseSelection && paintInfo.forceBlackText) |
| return; |
| |
| GraphicsContext* context = paintInfo.context; |
| tx += m_x; |
| ty += m_y; |
| RenderStyle* styleToUse = renderer()->style(m_firstLine); |
| int deco = parent() ? styleToUse->textDecoration() : styleToUse->textDecorationsInEffect(); |
| if (deco != TDNONE && |
| ((!paintedChildren && ((deco & UNDERLINE) || (deco & OVERLINE))) || (paintedChildren && (deco & LINE_THROUGH))) && |
| shouldDrawTextDecoration(renderer())) { |
| int x = m_x + borderLeft() + paddingLeft(); |
| int w = m_width - (borderLeft() + paddingLeft() + borderRight() + paddingRight()); |
| RootInlineBox* rootLine = root(); |
| if (rootLine->ellipsisBox()) { |
| int ellipsisX = m_x + rootLine->ellipsisBox()->x(); |
| int ellipsisWidth = rootLine->ellipsisBox()->width(); |
| bool ltr = renderer()->style()->direction() == LTR; |
| if (rootLine == this) { |
| // Trim w and x so that the underline isn't drawn underneath the ellipsis. |
| // ltr: is our right edge farther right than the right edge of the ellipsis. |
| // rtl: is the left edge of our box farther left than the left edge of the ellipsis. |
| bool ltrTruncation = ltr && (x + w >= ellipsisX + ellipsisWidth); |
| bool rtlTruncation = !ltr && (x <= ellipsisX + ellipsisWidth); |
| if (ltrTruncation) |
| w -= (x + w) - (ellipsisX + ellipsisWidth); |
| else if (rtlTruncation) { |
| int dx = m_x - ((ellipsisX - m_x) + ellipsisWidth); |
| tx -= dx; |
| w += dx; |
| } |
| } else { |
| bool ltrPastEllipsis = ltr && x >= ellipsisX; |
| bool rtlPastEllipsis = !ltr && (x + w) <= (ellipsisX + ellipsisWidth); |
| if (ltrPastEllipsis || rtlPastEllipsis) |
| return; |
| |
| bool ltrTruncation = ltr && x + w >= ellipsisX; |
| bool rtlTruncation = !ltr && x <= ellipsisX; |
| if (ltrTruncation) |
| w -= (x + w - ellipsisX); |
| else if (rtlTruncation) { |
| int dx = m_x - ((ellipsisX - m_x) + ellipsisWidth); |
| tx -= dx; |
| w += dx; |
| } |
| } |
| } |
| |
| // We must have child boxes and have decorations defined. |
| tx += borderLeft() + paddingLeft(); |
| |
| Color underline, overline, linethrough; |
| underline = overline = linethrough = styleToUse->color(); |
| if (!parent()) |
| renderer()->getTextDecorationColors(deco, underline, overline, linethrough); |
| |
| bool isPrinting = renderer()->document()->printing(); |
| context->setStrokeThickness(1.0f); // FIXME: We should improve this rule and not always just assume 1. |
| |
| bool paintUnderline = deco & UNDERLINE && !paintedChildren; |
| bool paintOverline = deco & OVERLINE && !paintedChildren; |
| bool paintLineThrough = deco & LINE_THROUGH && paintedChildren; |
| |
| bool linesAreOpaque = !isPrinting && (!paintUnderline || underline.alpha() == 255) && (!paintOverline || overline.alpha() == 255) && (!paintLineThrough || linethrough.alpha() == 255); |
| |
| int baselinePos = renderer()->style(m_firstLine)->font().ascent(); |
| if (!isRootInlineBox()) |
| baselinePos += borderTop() + paddingTop(); |
| |
| bool setClip = false; |
| int extraOffset = 0; |
| ShadowData* shadow = styleToUse->textShadow(); |
| if (!linesAreOpaque && shadow && shadow->next) { |
| IntRect clipRect(tx, ty, w, baselinePos + 2); |
| for (ShadowData* s = shadow; s; s = s->next) { |
| IntRect shadowRect(tx, ty, w, baselinePos + 2); |
| shadowRect.inflate(s->blur); |
| shadowRect.move(s->x, s->y); |
| clipRect.unite(shadowRect); |
| extraOffset = max(extraOffset, max(0, s->y) + s->blur); |
| } |
| context->save(); |
| context->clip(clipRect); |
| extraOffset += baselinePos + 2; |
| ty += extraOffset; |
| setClip = true; |
| } |
| |
| ColorSpace colorSpace = renderer()->style()->colorSpace(); |
| bool setShadow = false; |
| do { |
| if (shadow) { |
| if (!shadow->next) { |
| // The last set of lines paints normally inside the clip. |
| ty -= extraOffset; |
| extraOffset = 0; |
| } |
| context->setShadow(IntSize(shadow->x, shadow->y - extraOffset), shadow->blur, shadow->color, colorSpace); |
| setShadow = true; |
| shadow = shadow->next; |
| } |
| |
| if (paintUnderline) { |
| context->setStrokeColor(underline, colorSpace); |
| context->setStrokeStyle(SolidStroke); |
| // Leave one pixel of white between the baseline and the underline. |
| context->drawLineForText(IntPoint(tx, ty + baselinePos + 1), w, isPrinting); |
| } |
| if (paintOverline) { |
| context->setStrokeColor(overline, colorSpace); |
| context->setStrokeStyle(SolidStroke); |
| context->drawLineForText(IntPoint(tx, ty), w, isPrinting); |
| } |
| if (paintLineThrough) { |
| context->setStrokeColor(linethrough, colorSpace); |
| context->setStrokeStyle(SolidStroke); |
| context->drawLineForText(IntPoint(tx, ty + 2 * baselinePos / 3), w, isPrinting); |
| } |
| } while (shadow); |
| |
| if (setClip) |
| context->restore(); |
| else if (setShadow) |
| context->clearShadow(); |
| } |
| } |
| |
| InlineBox* InlineFlowBox::firstLeafChild() const |
| { |
| InlineBox* leaf = 0; |
| for (InlineBox* child = firstChild(); child && !leaf; child = child->nextOnLine()) |
| leaf = child->isLeaf() ? child : static_cast<InlineFlowBox*>(child)->firstLeafChild(); |
| return leaf; |
| } |
| |
| InlineBox* InlineFlowBox::lastLeafChild() const |
| { |
| InlineBox* leaf = 0; |
| for (InlineBox* child = lastChild(); child && !leaf; child = child->prevOnLine()) |
| leaf = child->isLeaf() ? child : static_cast<InlineFlowBox*>(child)->lastLeafChild(); |
| return leaf; |
| } |
| |
| RenderObject::SelectionState InlineFlowBox::selectionState() |
| { |
| return RenderObject::SelectionNone; |
| } |
| |
| bool InlineFlowBox::canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth) |
| { |
| for (InlineBox *box = firstChild(); box; box = box->nextOnLine()) { |
| if (!box->canAccommodateEllipsis(ltr, blockEdge, ellipsisWidth)) |
| return false; |
| } |
| return true; |
| } |
| |
| int InlineFlowBox::placeEllipsisBox(bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, bool& foundBox) |
| { |
| int result = -1; |
| // We iterate over all children, the foundBox variable tells us when we've found the |
| // box containing the ellipsis. All boxes after that one in the flow are hidden. |
| // If our flow is ltr then iterate over the boxes from left to right, otherwise iterate |
| // from right to left. Varying the order allows us to correctly hide the boxes following the ellipsis. |
| InlineBox *box = ltr ? firstChild() : lastChild(); |
| |
| // NOTE: these will cross after foundBox = true. |
| int visibleLeftEdge = blockLeftEdge; |
| int visibleRightEdge = blockRightEdge; |
| |
| while (box) { |
| int currResult = box->placeEllipsisBox(ltr, visibleLeftEdge, visibleRightEdge, ellipsisWidth, foundBox); |
| if (currResult != -1 && result == -1) |
| result = currResult; |
| |
| if (ltr) { |
| visibleLeftEdge += box->width(); |
| box = box->nextOnLine(); |
| } |
| else { |
| visibleRightEdge -= box->width(); |
| box = box->prevOnLine(); |
| } |
| } |
| return result; |
| } |
| |
| void InlineFlowBox::clearTruncation() |
| { |
| for (InlineBox *box = firstChild(); box; box = box->nextOnLine()) |
| box->clearTruncation(); |
| } |
| |
| #ifndef NDEBUG |
| |
| void InlineFlowBox::checkConsistency() const |
| { |
| #ifdef CHECK_CONSISTENCY |
| ASSERT(!m_hasBadChildList); |
| const InlineBox* prev = 0; |
| for (const InlineBox* child = m_firstChild; child; child = child->nextOnLine()) { |
| ASSERT(child->parent() == this); |
| ASSERT(child->prevOnLine() == prev); |
| prev = child; |
| } |
| ASSERT(prev == m_lastChild); |
| #endif |
| } |
| |
| #endif |
| |
| } // namespace WebCore |
