Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Apple Inc. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| 14 | * its contributors may be used to endorse or promote products derived |
| 15 | * from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| 18 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 20 | * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 23 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include "config.h" |
| 30 | #include "core/rendering/RenderLineBoxList.h" |
| 31 | |
| 32 | #include "core/rendering/HitTestResult.h" |
| 33 | #include "core/rendering/InlineTextBox.h" |
| 34 | #include "core/rendering/PaintInfo.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 35 | #include "core/rendering/RenderInline.h" |
Torne (Richard Coles) | 8abfc58 | 2013-09-12 12:10:38 +0100 | [diff] [blame] | 36 | #include "core/rendering/RenderView.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 37 | #include "core/rendering/RootInlineBox.h" |
| 38 | |
| 39 | using namespace std; |
| 40 | |
| 41 | namespace WebCore { |
| 42 | |
| 43 | #ifndef NDEBUG |
| 44 | RenderLineBoxList::~RenderLineBoxList() |
| 45 | { |
| 46 | ASSERT(!m_firstLineBox); |
| 47 | ASSERT(!m_lastLineBox); |
| 48 | } |
| 49 | #endif |
| 50 | |
| 51 | void RenderLineBoxList::appendLineBox(InlineFlowBox* box) |
| 52 | { |
| 53 | checkConsistency(); |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 54 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 55 | if (!m_firstLineBox) |
| 56 | m_firstLineBox = m_lastLineBox = box; |
| 57 | else { |
| 58 | m_lastLineBox->setNextLineBox(box); |
| 59 | box->setPreviousLineBox(m_lastLineBox); |
| 60 | m_lastLineBox = box; |
| 61 | } |
| 62 | |
| 63 | checkConsistency(); |
| 64 | } |
| 65 | |
Torne (Richard Coles) | f5e4ad5 | 2013-08-05 13:57:57 +0100 | [diff] [blame] | 66 | void RenderLineBoxList::deleteLineBoxTree() |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 67 | { |
| 68 | InlineFlowBox* line = m_firstLineBox; |
| 69 | InlineFlowBox* nextLine; |
| 70 | while (line) { |
| 71 | nextLine = line->nextLineBox(); |
Torne (Richard Coles) | f5e4ad5 | 2013-08-05 13:57:57 +0100 | [diff] [blame] | 72 | line->deleteLine(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 73 | line = nextLine; |
| 74 | } |
| 75 | m_firstLineBox = m_lastLineBox = 0; |
| 76 | } |
| 77 | |
| 78 | void RenderLineBoxList::extractLineBox(InlineFlowBox* box) |
| 79 | { |
| 80 | checkConsistency(); |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 81 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 82 | m_lastLineBox = box->prevLineBox(); |
| 83 | if (box == m_firstLineBox) |
| 84 | m_firstLineBox = 0; |
| 85 | if (box->prevLineBox()) |
| 86 | box->prevLineBox()->setNextLineBox(0); |
| 87 | box->setPreviousLineBox(0); |
| 88 | for (InlineFlowBox* curr = box; curr; curr = curr->nextLineBox()) |
| 89 | curr->setExtracted(); |
| 90 | |
| 91 | checkConsistency(); |
| 92 | } |
| 93 | |
| 94 | void RenderLineBoxList::attachLineBox(InlineFlowBox* box) |
| 95 | { |
| 96 | checkConsistency(); |
| 97 | |
| 98 | if (m_lastLineBox) { |
| 99 | m_lastLineBox->setNextLineBox(box); |
| 100 | box->setPreviousLineBox(m_lastLineBox); |
| 101 | } else |
| 102 | m_firstLineBox = box; |
| 103 | InlineFlowBox* last = box; |
| 104 | for (InlineFlowBox* curr = box; curr; curr = curr->nextLineBox()) { |
| 105 | curr->setExtracted(false); |
| 106 | last = curr; |
| 107 | } |
| 108 | m_lastLineBox = last; |
| 109 | |
| 110 | checkConsistency(); |
| 111 | } |
| 112 | |
| 113 | void RenderLineBoxList::removeLineBox(InlineFlowBox* box) |
| 114 | { |
| 115 | checkConsistency(); |
| 116 | |
| 117 | if (box == m_firstLineBox) |
| 118 | m_firstLineBox = box->nextLineBox(); |
| 119 | if (box == m_lastLineBox) |
| 120 | m_lastLineBox = box->prevLineBox(); |
| 121 | if (box->nextLineBox()) |
| 122 | box->nextLineBox()->setPreviousLineBox(box->prevLineBox()); |
| 123 | if (box->prevLineBox()) |
| 124 | box->prevLineBox()->setNextLineBox(box->nextLineBox()); |
| 125 | |
| 126 | checkConsistency(); |
| 127 | } |
| 128 | |
Torne (Richard Coles) | f5e4ad5 | 2013-08-05 13:57:57 +0100 | [diff] [blame] | 129 | void RenderLineBoxList::deleteLineBoxes() |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 130 | { |
| 131 | if (m_firstLineBox) { |
| 132 | InlineFlowBox* next; |
| 133 | for (InlineFlowBox* curr = m_firstLineBox; curr; curr = next) { |
| 134 | next = curr->nextLineBox(); |
Torne (Richard Coles) | f5e4ad5 | 2013-08-05 13:57:57 +0100 | [diff] [blame] | 135 | curr->destroy(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 136 | } |
| 137 | m_firstLineBox = 0; |
| 138 | m_lastLineBox = 0; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | void RenderLineBoxList::dirtyLineBoxes() |
| 143 | { |
| 144 | for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) |
| 145 | curr->dirtyLineBoxes(); |
| 146 | } |
| 147 | |
| 148 | bool RenderLineBoxList::rangeIntersectsRect(RenderBoxModelObject* renderer, LayoutUnit logicalTop, LayoutUnit logicalBottom, const LayoutRect& rect, const LayoutPoint& offset) const |
| 149 | { |
| 150 | RenderBox* block; |
| 151 | if (renderer->isBox()) |
| 152 | block = toRenderBox(renderer); |
| 153 | else |
| 154 | block = renderer->containingBlock(); |
| 155 | LayoutUnit physicalStart = block->flipForWritingMode(logicalTop); |
| 156 | LayoutUnit physicalEnd = block->flipForWritingMode(logicalBottom); |
| 157 | LayoutUnit physicalExtent = absoluteValue(physicalEnd - physicalStart); |
| 158 | physicalStart = min(physicalStart, physicalEnd); |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 159 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 160 | if (renderer->style()->isHorizontalWritingMode()) { |
| 161 | physicalStart += offset.y(); |
| 162 | if (physicalStart >= rect.maxY() || physicalStart + physicalExtent <= rect.y()) |
| 163 | return false; |
| 164 | } else { |
| 165 | physicalStart += offset.x(); |
| 166 | if (physicalStart >= rect.maxX() || physicalStart + physicalExtent <= rect.x()) |
| 167 | return false; |
| 168 | } |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 169 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 170 | return true; |
| 171 | } |
| 172 | |
Torne (Richard Coles) | 93ac45c | 2013-05-29 14:40:20 +0100 | [diff] [blame] | 173 | bool RenderLineBoxList::anyLineIntersectsRect(RenderBoxModelObject* renderer, const LayoutRect& rect, const LayoutPoint& offset, LayoutUnit outlineSize) const |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 174 | { |
| 175 | // We can check the first box and last box and avoid painting/hit testing if we don't |
| 176 | // intersect. This is a quick short-circuit that we can take to avoid walking any lines. |
| 177 | // FIXME: This check is flawed in the following extremely obscure way: |
| 178 | // if some line in the middle has a huge overflow, it might actually extend below the last line. |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 179 | RootInlineBox& firstRootBox = firstLineBox()->root(); |
| 180 | RootInlineBox& lastRootBox = lastLineBox()->root(); |
| 181 | LayoutUnit firstLineTop = firstLineBox()->logicalTopVisualOverflow(firstRootBox.lineTop()); |
| 182 | LayoutUnit lastLineBottom = lastLineBox()->logicalBottomVisualOverflow(lastRootBox.lineBottom()); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 183 | LayoutUnit logicalTop = firstLineTop - outlineSize; |
| 184 | LayoutUnit logicalBottom = outlineSize + lastLineBottom; |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 185 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 186 | return rangeIntersectsRect(renderer, logicalTop, logicalBottom, rect, offset); |
| 187 | } |
| 188 | |
| 189 | bool RenderLineBoxList::lineIntersectsDirtyRect(RenderBoxModelObject* renderer, InlineFlowBox* box, const PaintInfo& paintInfo, const LayoutPoint& offset) const |
| 190 | { |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 191 | RootInlineBox& root = box->root(); |
| 192 | LayoutUnit logicalTop = min<LayoutUnit>(box->logicalTopVisualOverflow(root.lineTop()), root.selectionTop()) - renderer->maximalOutlineSize(paintInfo.phase); |
| 193 | LayoutUnit logicalBottom = box->logicalBottomVisualOverflow(root.lineBottom()) + renderer->maximalOutlineSize(paintInfo.phase); |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 194 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 195 | return rangeIntersectsRect(renderer, logicalTop, logicalBottom, paintInfo.rect, offset); |
| 196 | } |
| 197 | |
| 198 | void RenderLineBoxList::paint(RenderBoxModelObject* renderer, PaintInfo& paintInfo, const LayoutPoint& paintOffset) const |
| 199 | { |
| 200 | // Only paint during the foreground/selection phases. |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 201 | if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseOutline |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 202 | && paintInfo.phase != PaintPhaseSelfOutline && paintInfo.phase != PaintPhaseChildOutlines && paintInfo.phase != PaintPhaseTextClip |
| 203 | && paintInfo.phase != PaintPhaseMask) |
| 204 | return; |
| 205 | |
| 206 | ASSERT(renderer->isRenderBlock() || (renderer->isRenderInline() && renderer->hasLayer())); // The only way an inline could paint like this is if it has a layer. |
| 207 | |
| 208 | // If we have no lines then we have no work to do. |
| 209 | if (!firstLineBox()) |
| 210 | return; |
| 211 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 212 | LayoutUnit outlineSize = renderer->maximalOutlineSize(paintInfo.phase); |
Torne (Richard Coles) | 93ac45c | 2013-05-29 14:40:20 +0100 | [diff] [blame] | 213 | if (!anyLineIntersectsRect(renderer, paintInfo.rect, paintOffset, outlineSize)) |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 214 | return; |
| 215 | |
| 216 | PaintInfo info(paintInfo); |
| 217 | ListHashSet<RenderInline*> outlineObjects; |
Torne (Richard Coles) | e1f1df5 | 2013-08-23 16:39:30 +0100 | [diff] [blame] | 218 | info.setOutlineObjects(&outlineObjects); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 219 | |
| 220 | // See if our root lines intersect with the dirty rect. If so, then we paint |
| 221 | // them. Note that boxes can easily overlap, so we can't make any assumptions |
| 222 | // based off positions of our first line box or our last line box. |
| 223 | for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) { |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 224 | if (lineIntersectsDirtyRect(renderer, curr, info, paintOffset)) { |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 225 | RootInlineBox& root = curr->root(); |
| 226 | curr->paint(info, paintOffset, root.lineTop(), root.lineBottom()); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 227 | } |
| 228 | } |
| 229 | |
| 230 | if (info.phase == PaintPhaseOutline || info.phase == PaintPhaseSelfOutline || info.phase == PaintPhaseChildOutlines) { |
Torne (Richard Coles) | e1f1df5 | 2013-08-23 16:39:30 +0100 | [diff] [blame] | 231 | ListHashSet<RenderInline*>::iterator end = info.outlineObjects()->end(); |
| 232 | for (ListHashSet<RenderInline*>::iterator it = info.outlineObjects()->begin(); it != end; ++it) { |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 233 | RenderInline* flow = *it; |
| 234 | flow->paintOutline(info, paintOffset); |
| 235 | } |
Torne (Richard Coles) | e1f1df5 | 2013-08-23 16:39:30 +0100 | [diff] [blame] | 236 | info.outlineObjects()->clear(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 237 | } |
| 238 | } |
| 239 | |
| 240 | bool RenderLineBoxList::hitTest(RenderBoxModelObject* renderer, const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) const |
| 241 | { |
| 242 | if (hitTestAction != HitTestForeground) |
| 243 | return false; |
| 244 | |
| 245 | ASSERT(renderer->isRenderBlock() || (renderer->isRenderInline() && renderer->hasLayer())); // The only way an inline could hit test like this is if it has a layer. |
| 246 | |
| 247 | // If we have no lines then we have no work to do. |
| 248 | if (!firstLineBox()) |
| 249 | return false; |
| 250 | |
| 251 | LayoutPoint point = locationInContainer.point(); |
| 252 | LayoutRect rect = firstLineBox()->isHorizontal() ? |
| 253 | IntRect(point.x(), point.y() - locationInContainer.topPadding(), 1, locationInContainer.topPadding() + locationInContainer.bottomPadding() + 1) : |
| 254 | IntRect(point.x() - locationInContainer.leftPadding(), point.y(), locationInContainer.rightPadding() + locationInContainer.leftPadding() + 1, 1); |
| 255 | |
| 256 | if (!anyLineIntersectsRect(renderer, rect, accumulatedOffset)) |
| 257 | return false; |
| 258 | |
| 259 | // See if our root lines contain the point. If so, then we hit test |
| 260 | // them further. Note that boxes can easily overlap, so we can't make any assumptions |
| 261 | // based off positions of our first line box or our last line box. |
| 262 | for (InlineFlowBox* curr = lastLineBox(); curr; curr = curr->prevLineBox()) { |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 263 | RootInlineBox& root = curr->root(); |
| 264 | if (rangeIntersectsRect(renderer, curr->logicalTopVisualOverflow(root.lineTop()), curr->logicalBottomVisualOverflow(root.lineBottom()), rect, accumulatedOffset)) { |
| 265 | bool inside = curr->nodeAtPoint(request, result, locationInContainer, accumulatedOffset, root.lineTop(), root.lineBottom()); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 266 | if (inside) { |
| 267 | renderer->updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset)); |
| 268 | return true; |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | return false; |
| 274 | } |
| 275 | |
| 276 | void RenderLineBoxList::dirtyLinesFromChangedChild(RenderObject* container, RenderObject* child) |
| 277 | { |
Torne (Richard Coles) | 8abfc58 | 2013-09-12 12:10:38 +0100 | [diff] [blame] | 278 | if (!container->parent() || (container->isRenderBlock() && (container->selfNeedsLayout() || !container->isRenderBlockFlow()))) |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 279 | return; |
| 280 | |
| 281 | RenderInline* inlineContainer = container->isRenderInline() ? toRenderInline(container) : 0; |
| 282 | InlineBox* firstBox = inlineContainer ? inlineContainer->firstLineBoxIncludingCulling() : firstLineBox(); |
| 283 | |
| 284 | // If we have no first line box, then just bail early. |
| 285 | if (!firstBox) { |
| 286 | // For an empty inline, go ahead and propagate the check up to our parent, unless the parent |
| 287 | // is already dirty. |
| 288 | if (container->isInline() && !container->ancestorLineBoxDirty()) { |
| 289 | container->parent()->dirtyLinesFromChangedChild(container); |
| 290 | container->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree. |
| 291 | } |
| 292 | return; |
| 293 | } |
| 294 | |
| 295 | // Try to figure out which line box we belong in. First try to find a previous |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 296 | // line box by examining our siblings. If we didn't find a line box, then use our |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 297 | // parent's first line box. |
| 298 | RootInlineBox* box = 0; |
| 299 | RenderObject* curr = 0; |
| 300 | for (curr = child->previousSibling(); curr; curr = curr->previousSibling()) { |
| 301 | if (curr->isFloatingOrOutOfFlowPositioned()) |
| 302 | continue; |
| 303 | |
| 304 | if (curr->isReplaced()) { |
| 305 | InlineBox* wrapper = toRenderBox(curr)->inlineBoxWrapper(); |
| 306 | if (wrapper) |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 307 | box = &wrapper->root(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 308 | } else if (curr->isText()) { |
| 309 | InlineTextBox* textBox = toRenderText(curr)->lastTextBox(); |
| 310 | if (textBox) |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 311 | box = &textBox->root(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 312 | } else if (curr->isRenderInline()) { |
| 313 | InlineBox* lastSiblingBox = toRenderInline(curr)->lastLineBoxIncludingCulling(); |
| 314 | if (lastSiblingBox) |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 315 | box = &lastSiblingBox->root(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | if (box) |
| 319 | break; |
| 320 | } |
| 321 | if (!box) { |
| 322 | if (inlineContainer && !inlineContainer->alwaysCreateLineBoxes()) { |
| 323 | // https://bugs.webkit.org/show_bug.cgi?id=60778 |
| 324 | // We may have just removed a <br> with no line box that was our first child. In this case |
| 325 | // we won't find a previous sibling, but firstBox can be pointing to a following sibling. |
| 326 | // This isn't good enough, since we won't locate the root line box that encloses the removed |
| 327 | // <br>. We have to just over-invalidate a bit and go up to our parent. |
| 328 | if (!inlineContainer->ancestorLineBoxDirty()) { |
| 329 | inlineContainer->parent()->dirtyLinesFromChangedChild(inlineContainer); |
| 330 | inlineContainer->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree. |
| 331 | } |
| 332 | return; |
| 333 | } |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame^] | 334 | box = &firstBox->root(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | // If we found a line box, then dirty it. |
| 338 | if (box) { |
| 339 | RootInlineBox* adjacentBox; |
| 340 | box->markDirty(); |
| 341 | |
| 342 | // dirty the adjacent lines that might be affected |
| 343 | // NOTE: we dirty the previous line because RootInlineBox objects cache |
| 344 | // the address of the first object on the next line after a BR, which we may be |
| 345 | // invalidating here. For more info, see how RenderBlock::layoutInlineChildren |
| 346 | // calls setLineBreakInfo with the result of findNextLineBreak. findNextLineBreak, |
| 347 | // despite the name, actually returns the first RenderObject after the BR. |
| 348 | // <rdar://problem/3849947> "Typing after pasting line does not appear until after window resize." |
| 349 | adjacentBox = box->prevRootBox(); |
| 350 | if (adjacentBox) |
| 351 | adjacentBox->markDirty(); |
| 352 | adjacentBox = box->nextRootBox(); |
| 353 | // If |child| has been inserted before the first element in the linebox, but after collapsed leading |
| 354 | // space, the search for |child|'s linebox will go past the leading space to the previous linebox and select that |
Ben Murdoch | 02772c6 | 2013-07-26 10:21:05 +0100 | [diff] [blame] | 355 | // one as |box|. If we hit that situation here, dirty the |box| actually containing the child too. |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 356 | bool insertedAfterLeadingSpace = box->lineBreakObj() == child->previousSibling(); |
Torne (Richard Coles) | 93ac45c | 2013-05-29 14:40:20 +0100 | [diff] [blame] | 357 | if (adjacentBox && (adjacentBox->lineBreakObj() == child || child->isBR() || (curr && curr->isBR()) |
| 358 | || insertedAfterLeadingSpace || isIsolated(container->style()->unicodeBidi()))) { |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 359 | adjacentBox->markDirty(); |
Torne (Richard Coles) | 93ac45c | 2013-05-29 14:40:20 +0100 | [diff] [blame] | 360 | } |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 361 | } |
| 362 | } |
| 363 | |
| 364 | #ifndef NDEBUG |
| 365 | |
| 366 | void RenderLineBoxList::checkConsistency() const |
| 367 | { |
| 368 | #ifdef CHECK_CONSISTENCY |
| 369 | const InlineFlowBox* prev = 0; |
| 370 | for (const InlineFlowBox* child = m_firstLineBox; child != 0; child = child->nextLineBox()) { |
| 371 | ASSERT(child->prevLineBox() == prev); |
| 372 | prev = child; |
| 373 | } |
| 374 | ASSERT(prev == m_lastLineBox); |
| 375 | #endif |
| 376 | } |
| 377 | |
| 378 | #endif |
| 379 | |
| 380 | } |