void RootInlineBox::childRemoved(InlineBox* box) { if (box->object() == m_lineBreakObj) setLineBreakInfo(0, 0, 0, 0); for (RootInlineBox* prev = prevRootBox(); prev && prev->lineBreakObj() == box->object(); prev = prev->prevRootBox()) { prev->setLineBreakInfo(0, 0, 0, 0); prev->markDirty(); } }
void RootInlineBox::childRemoved(InlineBox* box) { if (box->renderer() == m_lineBreakObj) setLineBreakInfo(0, 0, BidiStatus()); for (RootInlineBox* prev = prevRootBox(); prev && prev->lineBreakObj() == box->renderer(); prev = prev->prevRootBox()) { prev->setLineBreakInfo(0, 0, BidiStatus()); prev->markDirty(); } }
void LineBoxList::dirtyLinesFromChangedChild(LayoutObject* container, LayoutObject* child) { if (!container->parent() || (container->isLayoutBlock() && (container->selfNeedsLayout() || !container->isLayoutBlockFlow()))) return; LayoutInline* inlineContainer = container->isLayoutInline() ? toLayoutInline(container) : 0; InlineBox* firstBox = inlineContainer ? inlineContainer->firstLineBoxIncludingCulling() : firstLineBox(); // If we have no first line box, then just bail early. if (!firstBox) { // For an empty inline, go ahead and propagate the check up to our parent, unless the parent // is already dirty. if (container->isInline() && !container->ancestorLineBoxDirty()) { container->parent()->dirtyLinesFromChangedChild(container); container->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree. } 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; LayoutObject* curr = 0; ListHashSet<LayoutObject*, 16> potentialLineBreakObjects; potentialLineBreakObjects.add(child); for (curr = child->previousSibling(); curr; curr = curr->previousSibling()) { potentialLineBreakObjects.add(curr); if (curr->isFloatingOrOutOfFlowPositioned()) continue; if (curr->isReplaced()) { InlineBox* wrapper = toLayoutBox(curr)->inlineBoxWrapper(); if (wrapper) box = &wrapper->root(); } else if (curr->isText()) { InlineTextBox* textBox = toLayoutText(curr)->lastTextBox(); if (textBox) box = &textBox->root(); } else if (curr->isLayoutInline()) { InlineBox* lastSiblingBox = toLayoutInline(curr)->lastLineBoxIncludingCulling(); if (lastSiblingBox) box = &lastSiblingBox->root(); } if (box) break; } if (!box) { if (inlineContainer && !inlineContainer->alwaysCreateLineBoxes()) { // https://bugs.webkit.org/show_bug.cgi?id=60778 // We may have just removed a <br> with no line box that was our first child. In this case // we won't find a previous sibling, but firstBox can be pointing to a following sibling. // This isn't good enough, since we won't locate the root line box that encloses the removed // <br>. We have to just over-invalidate a bit and go up to our parent. if (!inlineContainer->ancestorLineBoxDirty()) { inlineContainer->parent()->dirtyLinesFromChangedChild(inlineContainer); inlineContainer->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree. } return; } box = &firstBox->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 LayoutBlock::layoutInlineChildren // calls setLineBreakInfo with the result of findNextLineBreak. findNextLineBreak, // despite the name, actually returns the first LayoutObject after the BR. // <rdar://problem/3849947> "Typing after pasting line does not appear until after window resize." adjacentBox = box->prevRootBox(); if (adjacentBox) adjacentBox->markDirty(); adjacentBox = box->nextRootBox(); // If |child| or any of its immediately previous siblings with culled lineboxes is the object after a line-break in |box| or the linebox after it // then that means |child| actually sits on the linebox after |box| (or is its line-break object) and so we need to dirty it as well. if (adjacentBox && (potentialLineBreakObjects.contains(box->lineBreakObj()) || potentialLineBreakObjects.contains(adjacentBox->lineBreakObj()) || child->isBR() || isIsolated(container->style()->unicodeBidi()))) adjacentBox->markDirty(); } }
void RenderLineBoxList::dirtyLinesFromChangedChild(RenderObject* container, RenderObject* child) { if (!container->parent() || (container->isRenderBlock() && (container->selfNeedsLayout() || !container->isBlockFlow()))) return; RenderInline* inlineContainer = container->isRenderInline() ? toRenderInline(container) : 0; InlineBox* firstBox = inlineContainer ? inlineContainer->firstLineBoxIncludingCulling() : firstLineBox(); // If we have no first line box, then just bail early. if (!firstBox) { // For an empty inline, go ahead and propagate the check up to our parent, unless the parent // is already dirty. if (container->isInline() && !container->ancestorLineBoxDirty()) { container->parent()->dirtyLinesFromChangedChild(container); container->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree. } 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->isFloatingOrOutOfFlowPositioned()) continue; if (curr->isReplaced()) { InlineBox* wrapper = toRenderBox(curr)->inlineBoxWrapper(); if (wrapper) box = wrapper->root(); } else if (curr->isText()) { InlineTextBox* textBox = toRenderText(curr)->lastTextBox(); if (textBox) box = textBox->root(); } else if (curr->isRenderInline()) { InlineBox* lastSiblingBox = toRenderInline(curr)->lastLineBoxIncludingCulling(); if (lastSiblingBox) box = lastSiblingBox->root(); } if (box) break; } if (!box) { if (inlineContainer && !inlineContainer->alwaysCreateLineBoxes()) { // https://bugs.webkit.org/show_bug.cgi?id=60778 // We may have just removed a <br> with no line box that was our first child. In this case // we won't find a previous sibling, but firstBox can be pointing to a following sibling. // This isn't good enough, since we won't locate the root line box that encloses the removed // <br>. We have to just over-invalidate a bit and go up to our parent. if (!inlineContainer->ancestorLineBoxDirty()) { inlineContainer->parent()->dirtyLinesFromChangedChild(inlineContainer); inlineContainer->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree. } return; } box = firstBox->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(); adjacentBox = box->nextRootBox(); // If |child| has been inserted before the first element in the linebox, but after collapsed leading // space, the search for |child|'s linebox will go past the leading space to the previous linebox and select that // one as |box|. If we hit that situation here, dirty the |box| actually containing the child too. bool insertedAfterLeadingSpace = box->lineBreakObj() == child->previousSibling(); if (adjacentBox && (adjacentBox->lineBreakObj() == child || child->isBR() || (curr && curr->isBR()) || insertedAfterLeadingSpace)) adjacentBox->markDirty(); } }