| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007 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 "RenderFlow.h" |
| |
| #include "Document.h" |
| #include "GraphicsContext.h" |
| #include "HTMLNames.h" |
| #include "InlineTextBox.h" |
| #include "RenderArena.h" |
| #include "RenderInline.h" |
| #include "RenderLayer.h" |
| #include "RenderView.h" |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| #ifndef NDEBUG |
| |
| RenderFlow::~RenderFlow() |
| { |
| ASSERT(!m_firstLineBox); |
| ASSERT(!m_lastLineBox); |
| } |
| |
| #endif |
| |
| RenderFlow* RenderFlow::createAnonymousFlow(Document* doc, RenderStyle* style) |
| { |
| RenderFlow* result; |
| if (style->display() == INLINE) |
| result = new (doc->renderArena()) RenderInline(doc); |
| else |
| result = new (doc->renderArena()) RenderBlock(doc); |
| result->setStyle(style); |
| return result; |
| } |
| |
| RenderFlow* RenderFlow::continuationBefore(RenderObject* beforeChild) |
| { |
| if (beforeChild && beforeChild->parent() == this) |
| return this; |
| |
| RenderFlow* curr = continuation(); |
| RenderFlow* nextToLast = this; |
| RenderFlow* last = this; |
| while (curr) { |
| if (beforeChild && beforeChild->parent() == curr) { |
| if (curr->firstChild() == beforeChild) |
| return last; |
| return curr; |
| } |
| |
| nextToLast = last; |
| last = curr; |
| curr = curr->continuation(); |
| } |
| |
| if (!beforeChild && !last->firstChild()) |
| return nextToLast; |
| return last; |
| } |
| |
| void RenderFlow::addChildWithContinuation(RenderObject* newChild, RenderObject* beforeChild) |
| { |
| RenderFlow* flow = continuationBefore(beforeChild); |
| ASSERT(!beforeChild || beforeChild->parent()->isRenderBlock() || |
| beforeChild->parent()->isRenderInline()); |
| RenderFlow* beforeChildParent = beforeChild ? static_cast<RenderFlow*>(beforeChild->parent()) : |
| (flow->continuation() ? flow->continuation() : flow); |
| |
| if (newChild->isFloatingOrPositioned()) |
| return beforeChildParent->addChildToFlow(newChild, beforeChild); |
| |
| // A continuation always consists of two potential candidates: an inline or an anonymous |
| // block box holding block children. |
| bool childInline = newChild->isInline(); |
| bool bcpInline = beforeChildParent->isInline(); |
| bool flowInline = flow->isInline(); |
| |
| if (flow == beforeChildParent) |
| return flow->addChildToFlow(newChild, beforeChild); |
| else { |
| // The goal here is to match up if we can, so that we can coalesce and create the |
| // minimal # of continuations needed for the inline. |
| if (childInline == bcpInline) |
| return beforeChildParent->addChildToFlow(newChild, beforeChild); |
| else if (flowInline == childInline) |
| return flow->addChildToFlow(newChild, 0); // Just treat like an append. |
| else |
| return beforeChildParent->addChildToFlow(newChild, beforeChild); |
| } |
| } |
| |
| void RenderFlow::addChild(RenderObject* newChild, RenderObject* beforeChild) |
| { |
| if (continuation()) |
| return addChildWithContinuation(newChild, beforeChild); |
| return addChildToFlow(newChild, beforeChild); |
| } |
| |
| void RenderFlow::extractLineBox(InlineFlowBox* box) |
| { |
| checkConsistency(); |
| |
| m_lastLineBox = box->prevFlowBox(); |
| if (box == m_firstLineBox) |
| m_firstLineBox = 0; |
| if (box->prevLineBox()) |
| box->prevLineBox()->setNextLineBox(0); |
| box->setPreviousLineBox(0); |
| for (InlineRunBox* curr = box; curr; curr = curr->nextLineBox()) |
| curr->setExtracted(); |
| |
| checkConsistency(); |
| } |
| |
| void RenderFlow::attachLineBox(InlineFlowBox* box) |
| { |
| checkConsistency(); |
| |
| if (m_lastLineBox) { |
| m_lastLineBox->setNextLineBox(box); |
| box->setPreviousLineBox(m_lastLineBox); |
| } else |
| m_firstLineBox = box; |
| InlineFlowBox* last = box; |
| for (InlineFlowBox* curr = box; curr; curr = curr->nextFlowBox()) { |
| curr->setExtracted(false); |
| last = curr; |
| } |
| m_lastLineBox = last; |
| |
| checkConsistency(); |
| } |
| |
| void RenderFlow::removeLineBox(InlineFlowBox* box) |
| { |
| checkConsistency(); |
| |
| if (box == m_firstLineBox) |
| m_firstLineBox = box->nextFlowBox(); |
| if (box == m_lastLineBox) |
| m_lastLineBox = box->prevFlowBox(); |
| if (box->nextLineBox()) |
| box->nextLineBox()->setPreviousLineBox(box->prevLineBox()); |
| if (box->prevLineBox()) |
| box->prevLineBox()->setNextLineBox(box->nextLineBox()); |
| |
| checkConsistency(); |
| } |
| |
| void RenderFlow::deleteLineBoxes() |
| { |
| if (m_firstLineBox) { |
| RenderArena* arena = renderArena(); |
| InlineRunBox* next; |
| for (InlineRunBox* curr = m_firstLineBox; curr; curr = next) { |
| next = curr->nextLineBox(); |
| curr->destroy(arena); |
| } |
| m_firstLineBox = 0; |
| m_lastLineBox = 0; |
| } |
| } |
| |
| void RenderFlow::destroy() |
| { |
| // Detach our continuation first. |
| if (m_continuation) |
| m_continuation->destroy(); |
| m_continuation = 0; |
| |
| // Make sure to destroy anonymous children first while they are still connected to the rest of the tree, so that they will |
| // properly dirty line boxes that they are removed from. Effects that do :before/:after only on hover could crash otherwise. |
| RenderContainer::destroyLeftoverChildren(); |
| |
| if (!documentBeingDestroyed()) { |
| if (m_firstLineBox) { |
| // We can't wait for RenderContainer::destroy to clear the selection, |
| // because by then we will have nuked the line boxes. |
| // FIXME: The SelectionController should be responsible for this when it |
| // is notified of DOM mutations. |
| if (isSelectionBorder()) |
| view()->clearSelection(); |
| |
| // If line boxes are contained inside a root, that means we're an inline. |
| // In that case, we need to remove all the line boxes so that the parent |
| // lines aren't pointing to deleted children. If the first line box does |
| // not have a parent that means they are either already disconnected or |
| // root lines that can just be destroyed without disconnecting. |
| if (m_firstLineBox->parent()) { |
| for (InlineRunBox* box = m_firstLineBox; box; box = box->nextLineBox()) |
| box->remove(); |
| } |
| |
| // If we are an anonymous block, then our line boxes might have children |
| // that will outlast this block. In the non-anonymous block case those |
| // children will be destroyed by the time we return from this function. |
| if (isAnonymousBlock()) { |
| for (InlineFlowBox* box = m_firstLineBox; box; box = box->nextFlowBox()) { |
| while (InlineBox* childBox = box->firstChild()) |
| childBox->remove(); |
| } |
| } |
| } else if (isInline() && parent()) |
| parent()->dirtyLinesFromChangedChild(this); |
| } |
| |
| deleteLineBoxes(); |
| |
| RenderContainer::destroy(); |
| } |
| |
| void RenderFlow::dirtyLinesFromChangedChild(RenderObject* child) |
| { |
| if (!parent() || (selfNeedsLayout() && !isInlineFlow()) || isTable()) |
| return; |
| |
| // If we have no first line box, then just bail early. |
| if (!firstLineBox()) { |
| // For an empty inline, go ahead and propagate the check up to our parent, unless the parent |
| // is already dirty. |
| if (isInline() && !parent()->selfNeedsLayout()) |
| parent()->dirtyLinesFromChangedChild(this); |
| return; |
| } |
| |
| // Try to figure out which line box we belong in. First try to find a previous |
| // line box by examining our siblings. If we didn't find a line box, then use our |
| // parent's first line box. |
| RootInlineBox* box = 0; |
| RenderObject* curr = 0; |
| for (curr = child->previousSibling(); curr; curr = curr->previousSibling()) { |
| if (curr->isFloatingOrPositioned()) |
| continue; |
| |
| if (curr->isReplaced()) { |
| InlineBox* wrapper = curr->inlineBoxWrapper(); |
| if (wrapper) |
| box = wrapper->root(); |
| } else if (curr->isText()) { |
| InlineTextBox* textBox = static_cast<RenderText*>(curr)->lastTextBox(); |
| if (textBox) |
| box = textBox->root(); |
| } else if (curr->isInlineFlow()) { |
| InlineRunBox* runBox = static_cast<RenderFlow*>(curr)->lastLineBox(); |
| if (runBox) |
| box = runBox->root(); |
| } |
| |
| if (box) |
| break; |
| } |
| if (!box) |
| box = firstLineBox()->root(); |
| |
| // If we found a line box, then dirty it. |
| if (box) { |
| RootInlineBox* adjacentBox; |
| box->markDirty(); |
| |
| // dirty the adjacent lines that might be affected |
| // NOTE: we dirty the previous line because RootInlineBox objects cache |
| // the address of the first object on the next line after a BR, which we may be |
| // invalidating here. For more info, see how RenderBlock::layoutInlineChildren |
| // calls setLineBreakInfo with the result of findNextLineBreak. findNextLineBreak, |
| // despite the name, actually returns the first RenderObject after the BR. |
| // <rdar://problem/3849947> "Typing after pasting line does not appear until after window resize." |
| adjacentBox = box->prevRootBox(); |
| if (adjacentBox) |
| adjacentBox->markDirty(); |
| if (child->isBR() || (curr && curr->isBR())) { |
| adjacentBox = box->nextRootBox(); |
| if (adjacentBox) |
| adjacentBox->markDirty(); |
| } |
| } |
| } |
| |
| short RenderFlow::lineHeight(bool firstLine, bool isRootLineBox) const |
| { |
| if (firstLine) { |
| RenderStyle* s = style(firstLine); |
| Length lh = s->lineHeight(); |
| if (lh.isNegative()) { |
| if (s == style()) { |
| if (m_lineHeight == -1) |
| m_lineHeight = RenderObject::lineHeight(false); |
| return m_lineHeight; |
| } |
| return s->font().lineSpacing(); |
| } |
| if (lh.isPercent()) |
| return lh.calcMinValue(s->fontSize()); |
| return lh.value(); |
| } |
| |
| if (m_lineHeight == -1) |
| m_lineHeight = RenderObject::lineHeight(false); |
| return m_lineHeight; |
| } |
| |
| void RenderFlow::dirtyLineBoxes(bool fullLayout, bool isRootLineBox) |
| { |
| if (!isRootLineBox && isReplaced()) |
| return RenderContainer::dirtyLineBoxes(fullLayout, isRootLineBox); |
| |
| if (fullLayout) |
| deleteLineBoxes(); |
| else { |
| for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) |
| curr->dirtyLineBoxes(); |
| } |
| } |
| |
| InlineBox* RenderFlow::createInlineBox(bool makePlaceHolderBox, bool isRootLineBox, bool isOnlyRun) |
| { |
| checkConsistency(); |
| |
| if (!isRootLineBox && |
| (isReplaced() || makePlaceHolderBox)) // Inline tables and inline blocks |
| return RenderContainer::createInlineBox(false, isRootLineBox); // (or positioned element placeholders). |
| |
| InlineFlowBox* flowBox = 0; |
| if (isInlineFlow()) |
| flowBox = new (renderArena()) InlineFlowBox(this); |
| else |
| flowBox = new (renderArena()) RootInlineBox(this); |
| |
| if (!m_firstLineBox) |
| m_firstLineBox = m_lastLineBox = flowBox; |
| else { |
| m_lastLineBox->setNextLineBox(flowBox); |
| flowBox->setPreviousLineBox(m_lastLineBox); |
| m_lastLineBox = flowBox; |
| } |
| |
| checkConsistency(); |
| |
| return flowBox; |
| } |
| |
| void RenderFlow::paintLines(PaintInfo& paintInfo, int tx, int ty) |
| { |
| // Only paint during the foreground/selection phases. |
| if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseOutline |
| && paintInfo.phase != PaintPhaseSelfOutline && paintInfo.phase != PaintPhaseChildOutlines) |
| return; |
| |
| bool inlineFlow = isInlineFlow(); |
| if (inlineFlow) |
| ASSERT(m_layer); // The only way a compact/run-in/inline could paint like this is if it has a layer. |
| |
| // If we have no lines then we have no work to do. |
| if (!firstLineBox()) |
| return; |
| |
| // We can check the first box and last box and avoid painting if we don't |
| // intersect. This is a quick short-circuit that we can take to avoid walking any lines. |
| // FIXME: This check is flawed in the following extremely obscure way: |
| // if some line in the middle has a huge overflow, it might actually extend below the last line. |
| int yPos = firstLineBox()->root()->topOverflow() - maximalOutlineSize(paintInfo.phase); |
| int h = maximalOutlineSize(paintInfo.phase) + lastLineBox()->root()->bottomOverflow() - yPos; |
| yPos += ty; |
| if (yPos >= paintInfo.rect.bottom() || yPos + h <= paintInfo.rect.y()) |
| return; |
| |
| PaintInfo info(paintInfo); |
| RenderFlowSequencedSet outlineObjects; |
| info.outlineObjects = &outlineObjects; |
| |
| // See if our root lines intersect with the dirty rect. If so, then we paint |
| // them. Note that boxes can easily overlap, so we can't make any assumptions |
| // based off positions of our first line box or our last line box. |
| RenderView* v = view(); |
| bool usePrintRect = !v->printRect().isEmpty(); |
| for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextFlowBox()) { |
| if (usePrintRect) { |
| // FIXME: This is a feeble effort to avoid splitting a line across two pages. |
| // It is utterly inadequate, and this should not be done at paint time at all. |
| // The whole way objects break across pages needs to be redone. |
| // Try to avoid splitting a line vertically, but only if it's less than the height |
| // of the entire page. |
| if (curr->root()->bottomOverflow() - curr->root()->topOverflow() <= v->printRect().height()) { |
| if (ty + curr->root()->bottomOverflow() > v->printRect().bottom()) { |
| if (ty + curr->root()->topOverflow() < v->truncatedAt()) |
| v->setBestTruncatedAt(ty + curr->root()->topOverflow(), this); |
| // If we were able to truncate, don't paint. |
| if (ty + curr->root()->topOverflow() >= v->truncatedAt()) |
| break; |
| } |
| } |
| } |
| |
| int top = min(curr->root()->topOverflow(), curr->root()->selectionTop()) - maximalOutlineSize(info.phase); |
| int bottom = curr->root()->bottomOverflow() + maximalOutlineSize(info.phase); |
| h = bottom - top; |
| yPos = ty + top; |
| if (yPos < info.rect.bottom() && yPos + h > info.rect.y()) |
| curr->paint(info, tx, ty); |
| } |
| |
| if (info.phase == PaintPhaseOutline || info.phase == PaintPhaseSelfOutline || info.phase == PaintPhaseChildOutlines) { |
| RenderFlowSequencedSet::iterator end = info.outlineObjects->end(); |
| for (RenderFlowSequencedSet::iterator it = info.outlineObjects->begin(); it != end; ++it) { |
| RenderFlow* flow = *it; |
| flow->paintOutline(info.context, tx, ty); |
| } |
| info.outlineObjects->clear(); |
| } |
| } |
| |
| bool RenderFlow::hitTestLines(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty, HitTestAction hitTestAction) |
| { |
| if (hitTestAction != HitTestForeground) |
| return false; |
| |
| bool inlineFlow = isInlineFlow(); |
| if (inlineFlow) |
| ASSERT(m_layer); // The only way a compact/run-in/inline could paint like this is if it has a layer. |
| |
| // If we have no lines then we have no work to do. |
| if (!firstLineBox()) |
| return false; |
| |
| // We can check the first box and last box and avoid hit testing if we don't |
| // contain the point. This is a quick short-circuit that we can take to avoid walking any lines. |
| // FIXME: This check is flawed in the following extremely obscure way: |
| // if some line in the middle has a huge overflow, it might actually extend below the last line. |
| if ((y >= ty + lastLineBox()->root()->bottomOverflow()) || (y < ty + firstLineBox()->root()->topOverflow())) |
| return false; |
| |
| // See if our root lines contain the point. If so, then we hit test |
| // them further. Note that boxes can easily overlap, so we can't make any assumptions |
| // based off positions of our first line box or our last line box. |
| for (InlineFlowBox* curr = lastLineBox(); curr; curr = curr->prevFlowBox()) { |
| if (y >= ty + curr->root()->topOverflow() && y < ty + curr->root()->bottomOverflow()) { |
| bool inside = curr->nodeAtPoint(request, result, x, y, tx, ty); |
| if (inside) { |
| updateHitTestResult(result, IntPoint(x - tx, y - ty)); |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| IntRect RenderFlow::absoluteClippedOverflowRect() |
| { |
| if (isInlineFlow()) { |
| // Only compacts and run-ins are allowed in here during layout. |
| ASSERT(!view() || !view()->layoutState() || isCompact() || isRunIn()); |
| |
| if (!firstLineBox() && !continuation()) |
| return IntRect(); |
| |
| // Find our leftmost position. |
| int left = 0; |
| int top = firstLineBox() ? firstLineBox()->yPos() : 0; |
| for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) { |
| if (curr == firstLineBox() || curr->xPos() < left) |
| left = curr->xPos(); |
| } |
| |
| // Now invalidate a rectangle. |
| int ow = style() ? style()->outlineSize() : 0; |
| if (isCompact()) |
| left -= m_x; |
| |
| // We need to add in the relative position offsets of any inlines (including us) up to our |
| // containing block. |
| RenderBlock* cb = containingBlock(); |
| for (RenderObject* inlineFlow = this; inlineFlow && inlineFlow->isInlineFlow() && inlineFlow != cb; |
| inlineFlow = inlineFlow->parent()) { |
| if (inlineFlow->style()->position() == RelativePosition && inlineFlow->hasLayer()) |
| inlineFlow->layer()->relativePositionOffset(left, top); |
| } |
| |
| IntRect r(-ow + left, -ow + top, width() + ow * 2, height() + ow * 2); |
| if (cb->hasColumns()) |
| cb->adjustRectForColumns(r); |
| |
| if (cb->hasOverflowClip()) { |
| // cb->height() is inaccurate if we're in the middle of a layout of |cb|, so use the |
| // layer's size instead. Even if the layer's size is wrong, the layer itself will repaint |
| // anyway if its size does change. |
| int x = r.x(); |
| int y = r.y(); |
| IntRect boxRect(0, 0, cb->layer()->width(), cb->layer()->height()); |
| cb->layer()->subtractScrollOffset(x, y); // For overflow:auto/scroll/hidden. |
| IntRect repaintRect(x, y, r.width(), r.height()); |
| r = intersection(repaintRect, boxRect); |
| } |
| cb->computeAbsoluteRepaintRect(r); |
| |
| if (ow) { |
| for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) { |
| if (!curr->isText()) { |
| IntRect childRect = curr->getAbsoluteRepaintRectWithOutline(ow); |
| r.unite(childRect); |
| } |
| } |
| |
| if (continuation() && !continuation()->isInline()) { |
| IntRect contRect = continuation()->getAbsoluteRepaintRectWithOutline(ow); |
| r.unite(contRect); |
| } |
| } |
| |
| return r; |
| } |
| |
| return RenderContainer::absoluteClippedOverflowRect(); |
| } |
| |
| int RenderFlow::lowestPosition(bool includeOverflowInterior, bool includeSelf) const |
| { |
| ASSERT(!isInlineFlow()); |
| if (!includeOverflowInterior && hasOverflowClip()) |
| return includeSelf && m_width > 0 ? overflowHeight(false) : 0; |
| |
| int bottom = includeSelf && m_width > 0 ? m_height : 0; |
| if (!hasColumns()) { |
| // FIXME: Come up with a way to use the layer tree to avoid visiting all the kids. |
| // For now, we have to descend into all the children, since we may have a huge abs div inside |
| // a tiny rel div buried somewhere deep in our child tree. In this case we have to get to |
| // the abs div. |
| for (RenderObject* c = firstChild(); c; c = c->nextSibling()) { |
| if (!c->isFloatingOrPositioned() && !c->isText() && !c->isInlineFlow()) |
| bottom = max(bottom, c->yPos() + c->lowestPosition(false)); |
| } |
| } |
| |
| if (includeSelf && isRelPositioned()) |
| bottom += relativePositionOffsetY(); |
| |
| return bottom; |
| } |
| |
| int RenderFlow::rightmostPosition(bool includeOverflowInterior, bool includeSelf) const |
| { |
| ASSERT(!isInlineFlow()); |
| if (!includeOverflowInterior && hasOverflowClip()) |
| return includeSelf && m_height > 0 ? overflowWidth(false) : 0; |
| |
| int right = includeSelf && m_height > 0 ? m_width : 0; |
| if (!hasColumns()) { |
| // FIXME: Come up with a way to use the layer tree to avoid visiting all the kids. |
| // For now, we have to descend into all the children, since we may have a huge abs div inside |
| // a tiny rel div buried somewhere deep in our child tree. In this case we have to get to |
| // the abs div. |
| for (RenderObject* c = firstChild(); c; c = c->nextSibling()) { |
| if (!c->isFloatingOrPositioned() && !c->isText() && !c->isInlineFlow()) |
| right = max(right, c->xPos() + c->rightmostPosition(false)); |
| } |
| } |
| |
| if (includeSelf && isRelPositioned()) |
| right += relativePositionOffsetX(); |
| |
| return right; |
| } |
| |
| int RenderFlow::leftmostPosition(bool includeOverflowInterior, bool includeSelf) const |
| { |
| ASSERT(!isInlineFlow()); |
| if (!includeOverflowInterior && hasOverflowClip()) |
| return includeSelf && m_height > 0 ? overflowLeft(false) : m_width; |
| |
| int left = includeSelf && m_height > 0 ? 0 : m_width; |
| if (!hasColumns()) { |
| // FIXME: Come up with a way to use the layer tree to avoid visiting all the kids. |
| // For now, we have to descend into all the children, since we may have a huge abs div inside |
| // a tiny rel div buried somewhere deep in our child tree. In this case we have to get to |
| // the abs div. |
| for (RenderObject* c = firstChild(); c; c = c->nextSibling()) { |
| if (!c->isFloatingOrPositioned() && !c->isText() && !c->isInlineFlow()) |
| left = min(left, c->xPos() + c->leftmostPosition(false)); |
| } |
| } |
| |
| if (includeSelf && isRelPositioned()) |
| left += relativePositionOffsetX(); |
| |
| return left; |
| } |
| |
| IntRect RenderFlow::caretRect(int offset, EAffinity affinity, int* extraWidthToEndOfLine) |
| { |
| // Do the normal calculation in most cases. |
| if (firstChild() || style()->display() == INLINE) |
| return RenderContainer::caretRect(offset, affinity, extraWidthToEndOfLine); |
| |
| // This is a special case: |
| // The element is not an inline element, and it's empty. So we have to |
| // calculate a fake position to indicate where objects are to be inserted. |
| |
| // FIXME: This does not take into account either :first-line or :first-letter |
| // However, as soon as some content is entered, the line boxes will be |
| // constructed and this kludge is not called any more. So only the caret size |
| // of an empty :first-line'd block is wrong. I think we can live with that. |
| RenderStyle* currentStyle = firstLineStyle(); |
| int height = lineHeight(true); |
| const int caretWidth = 1; |
| |
| enum CaretAlignment { alignLeft, alignRight, alignCenter }; |
| |
| CaretAlignment alignment = alignLeft; |
| |
| switch (currentStyle->textAlign()) { |
| case TAAUTO: |
| case JUSTIFY: |
| if (currentStyle->direction() == RTL) |
| alignment = alignRight; |
| break; |
| case LEFT: |
| case WEBKIT_LEFT: |
| break; |
| case CENTER: |
| case WEBKIT_CENTER: |
| alignment = alignCenter; |
| break; |
| case RIGHT: |
| case WEBKIT_RIGHT: |
| alignment = alignRight; |
| break; |
| } |
| |
| int x = borderLeft() + paddingLeft(); |
| int w = width(); |
| |
| switch (alignment) { |
| case alignLeft: |
| break; |
| case alignCenter: |
| x = (x + w - (borderRight() + paddingRight())) / 2; |
| break; |
| case alignRight: |
| x = w - (borderRight() + paddingRight()); |
| break; |
| } |
| |
| if (extraWidthToEndOfLine) { |
| if (isRenderBlock()) { |
| *extraWidthToEndOfLine = w - (x + caretWidth); |
| } else { |
| // FIXME: This code looks wrong. |
| // myRight and containerRight are set up, but then clobbered. |
| // So *extraWidthToEndOfLine will always be 0 here. |
| |
| int myRight = x + caretWidth; |
| int ignore; |
| absolutePositionForContent(myRight, ignore); |
| |
| int containerRight = containingBlock()->xPos() + containingBlockWidth(); |
| absolutePositionForContent(containerRight, ignore); |
| |
| *extraWidthToEndOfLine = containerRight - myRight; |
| } |
| } |
| |
| int absx, absy; |
| absolutePositionForContent(absx, absy); |
| x += absx; |
| int y = absy + paddingTop() + borderTop(); |
| |
| return IntRect(x, y, caretWidth, height); |
| } |
| |
| void RenderFlow::addFocusRingRects(GraphicsContext* graphicsContext, int tx, int ty) |
| { |
| if (isRenderBlock()) { |
| // Continuations should include their margins in the outline rect. |
| if (continuation()) { |
| bool nextInlineHasLineBox = continuation()->firstLineBox(); |
| bool prevInlineHasLineBox = static_cast<RenderFlow*>(continuation()->element()->renderer())->firstLineBox(); |
| int topMargin = prevInlineHasLineBox ? collapsedMarginTop() : 0; |
| int bottomMargin = nextInlineHasLineBox ? collapsedMarginBottom() : 0; |
| graphicsContext->addFocusRingRect(IntRect(tx, ty - topMargin, |
| width(), height() + topMargin + bottomMargin)); |
| } else |
| graphicsContext->addFocusRingRect(IntRect(tx, ty, width(), height())); |
| } |
| |
| if (!hasOverflowClip() && !hasControlClip()) { |
| for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) |
| graphicsContext->addFocusRingRect(IntRect(tx + curr->xPos(), ty + curr->yPos(), curr->width(), curr->height())); |
| |
| for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) |
| if (!curr->isText() && !curr->isListMarker()) { |
| int x = 0; |
| int y = 0; |
| if (curr->layer()) |
| curr->absolutePosition(x, y); |
| else { |
| x = tx + curr->xPos(); |
| y = ty + curr->yPos(); |
| } |
| curr->addFocusRingRects(graphicsContext, x, y); |
| } |
| } |
| |
| if (continuation()) { |
| if (isInline()) |
| continuation()->addFocusRingRects(graphicsContext, |
| tx - containingBlock()->xPos() + continuation()->xPos(), |
| ty - containingBlock()->yPos() + continuation()->yPos()); |
| else |
| continuation()->addFocusRingRects(graphicsContext, |
| tx - xPos() + continuation()->containingBlock()->xPos(), |
| ty - yPos() + continuation()->containingBlock()->yPos()); |
| } |
| } |
| |
| void RenderFlow::paintOutline(GraphicsContext* graphicsContext, int tx, int ty) |
| { |
| if (!hasOutline()) |
| return; |
| |
| if (style()->outlineStyleIsAuto() || hasOutlineAnnotation()) { |
| int ow = style()->outlineWidth(); |
| Color oc = style()->outlineColor(); |
| if (!oc.isValid()) |
| oc = style()->color(); |
| |
| graphicsContext->initFocusRing(ow, style()->outlineOffset()); |
| addFocusRingRects(graphicsContext, tx, ty); |
| if (style()->outlineStyleIsAuto()) |
| graphicsContext->drawFocusRing(oc); |
| else |
| addPDFURLRect(graphicsContext, graphicsContext->focusRingBoundingRect()); |
| graphicsContext->clearFocusRing(); |
| } |
| |
| if (style()->outlineStyleIsAuto() || style()->outlineStyle() <= BHIDDEN) |
| return; |
| |
| Vector<IntRect*> rects; |
| |
| rects.append(new IntRect); |
| for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) |
| rects.append(new IntRect(curr->xPos(), curr->yPos(), curr->width(), curr->height())); |
| |
| rects.append(new IntRect); |
| |
| for (unsigned i = 1; i < rects.size() - 1; i++) |
| paintOutlineForLine(graphicsContext, tx, ty, *rects.at(i - 1), *rects.at(i), *rects.at(i + 1)); |
| deleteAllValues(rects); |
| } |
| |
| void RenderFlow::paintOutlineForLine(GraphicsContext* graphicsContext, int tx, int ty, |
| const IntRect& lastline, const IntRect& thisline, const IntRect& nextline) |
| { |
| int ow = style()->outlineWidth(); |
| EBorderStyle os = style()->outlineStyle(); |
| Color oc = style()->outlineColor(); |
| if (!oc.isValid()) |
| oc = style()->color(); |
| |
| int offset = style()->outlineOffset(); |
| |
| int t = ty + thisline.y() - offset; |
| int l = tx + thisline.x() - offset; |
| int b = ty + thisline.bottom() + offset; |
| int r = tx + thisline.right() + offset; |
| |
| // left edge |
| drawBorder(graphicsContext, |
| l - ow, |
| t - (lastline.isEmpty() || thisline.x() < lastline.x() || (lastline.right() - 1) <= thisline.x() ? ow : 0), |
| l, |
| b + (nextline.isEmpty() || thisline.x() <= nextline.x() || (nextline.right() - 1) <= thisline.x() ? ow : 0), |
| BSLeft, |
| oc, style()->color(), os, |
| (lastline.isEmpty() || thisline.x() < lastline.x() || (lastline.right() - 1) <= thisline.x() ? ow : -ow), |
| (nextline.isEmpty() || thisline.x() <= nextline.x() || (nextline.right() - 1) <= thisline.x() ? ow : -ow)); |
| |
| // right edge |
| drawBorder(graphicsContext, |
| r, |
| t - (lastline.isEmpty() || lastline.right() < thisline.right() || (thisline.right() - 1) <= lastline.x() ? ow : 0), |
| r + ow, |
| b + (nextline.isEmpty() || nextline.right() <= thisline.right() || (thisline.right() - 1) <= nextline.x() ? ow : 0), |
| BSRight, |
| oc, style()->color(), os, |
| (lastline.isEmpty() || lastline.right() < thisline.right() || (thisline.right() - 1) <= lastline.x() ? ow : -ow), |
| (nextline.isEmpty() || nextline.right() <= thisline.right() || (thisline.right() - 1) <= nextline.x() ? ow : -ow)); |
| // upper edge |
| if (thisline.x() < lastline.x()) |
| drawBorder(graphicsContext, |
| l - ow, |
| t - ow, |
| min(r+ow, (lastline.isEmpty() ? 1000000 : tx + lastline.x())), |
| t , |
| BSTop, oc, style()->color(), os, |
| ow, |
| (!lastline.isEmpty() && tx + lastline.x() + 1 < r + ow) ? -ow : ow); |
| |
| if (lastline.right() < thisline.right()) |
| drawBorder(graphicsContext, |
| max(lastline.isEmpty() ? -1000000 : tx + lastline.right(), l - ow), |
| t - ow, |
| r + ow, |
| t , |
| BSTop, oc, style()->color(), os, |
| (!lastline.isEmpty() && l - ow < tx + lastline.right()) ? -ow : ow, |
| ow); |
| |
| // lower edge |
| if (thisline.x() < nextline.x()) |
| drawBorder(graphicsContext, |
| l - ow, |
| b, |
| min(r + ow, !nextline.isEmpty() ? tx + nextline.x() + 1 : 1000000), |
| b + ow, |
| BSBottom, oc, style()->color(), os, |
| ow, |
| (!nextline.isEmpty() && tx + nextline.x() + 1 < r + ow) ? -ow : ow); |
| |
| if (nextline.right() < thisline.right()) |
| drawBorder(graphicsContext, |
| max(!nextline.isEmpty() ? tx + nextline.right() : -1000000, l - ow), |
| b, |
| r + ow, |
| b + ow, |
| BSBottom, oc, style()->color(), os, |
| (!nextline.isEmpty() && l - ow < tx + nextline.right()) ? -ow : ow, |
| ow); |
| } |
| |
| #ifndef NDEBUG |
| |
| void RenderFlow::checkConsistency() const |
| { |
| #ifdef CHECK_CONSISTENCY |
| const InlineFlowBox* prev = 0; |
| for (const InlineFlowBox* child = m_firstLineBox; child != 0; child = child->nextFlowBox()) { |
| ASSERT(child->object() == this); |
| ASSERT(child->prevFlowBox() == prev); |
| prev = child; |
| } |
| ASSERT(prev == m_lastLineBox); |
| #endif |
| } |
| |
| #endif |
| |
| } // namespace WebCore |
