2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
22 #include "RenderView.h"
26 #include "FloatQuad.h"
28 #include "FrameView.h"
29 #include "GraphicsContext.h"
30 #include "HTMLFrameOwnerElement.h"
31 #include "HitTestResult.h"
32 #include "RenderLayer.h"
33 #include "RenderSelectionInfo.h"
34 #include "RenderWidget.h"
35 #include "RenderWidgetProtector.h"
36 #include "TransformState.h"
38 #if USE(ACCELERATED_COMPOSITING)
39 #include "RenderLayerCompositor.h"
42 #if defined(ANDROID_LAYOUT) || defined(ANDROID_FIXED_ELEMENTS)
48 RenderView::RenderView(Node* node, FrameView* view)
53 , m_selectionStartPos(-1)
54 , m_selectionEndPos(-1)
55 , m_maximalOutlineSize(0)
57 , m_pageHeightChanged(false)
59 , m_layoutStateDisableCount(0)
61 // Clear our anonymous bit, set because RenderObject assumes
62 // any renderer with document as the node is anonymous.
63 setIsAnonymous(false);
65 // init RenderObject attributes
68 m_minPreferredLogicalWidth = 0;
69 m_maxPreferredLogicalWidth = 0;
71 setPreferredLogicalWidthsDirty(true, false);
73 setPositioned(true); // to 0,0 :)
76 RenderView::~RenderView()
80 void RenderView::computeLogicalHeight()
82 if (!printing() && m_frameView)
83 setLogicalHeight(viewLogicalHeight());
86 void RenderView::computeLogicalWidth()
88 if (!printing() && m_frameView)
89 setLogicalWidth(viewLogicalWidth());
91 setVisibleWidth(m_frameView->textWrapWidth());
92 const Settings * settings = document()->settings();
94 if (settings->useWideViewport() && settings->viewportWidth() == -1 && width() < minPreferredLogicalWidth())
95 setWidth(m_minPreferredLogicalWidth);
99 void RenderView::computePreferredLogicalWidths()
101 ASSERT(preferredLogicalWidthsDirty());
103 RenderBlock::computePreferredLogicalWidths();
105 m_maxPreferredLogicalWidth = m_minPreferredLogicalWidth;
108 void RenderView::layout()
110 if (!document()->paginated())
114 m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = width();
116 // Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
117 bool relayoutChildren = !printing() && (!m_frameView || width() != viewWidth() || height() != viewHeight());
118 if (relayoutChildren) {
119 setChildNeedsLayout(true, false);
120 for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
121 if (child->style()->logicalHeight().isPercent() || child->style()->logicalMinHeight().isPercent() || child->style()->logicalMaxHeight().isPercent())
122 child->setChildNeedsLayout(true, false);
126 ASSERT(!m_layoutState);
128 // FIXME: May be better to push a clip and avoid issuing offscreen repaints.
129 state.m_clipped = false;
130 state.m_pageHeight = m_pageHeight;
131 state.m_pageHeightChanged = m_pageHeightChanged;
132 m_pageHeightChanged = false;
133 m_layoutState = &state;
136 RenderBlock::layout();
138 // Reset overflow and then replace it with docWidth and docHeight.
140 addLayoutOverflow(IntRect(0, 0, docWidth(), docHeight()));
142 ASSERT(layoutDelta() == IntSize());
143 ASSERT(m_layoutStateDisableCount == 0);
144 ASSERT(m_layoutState == &state);
146 setNeedsLayout(false);
149 void RenderView::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool /*useTransforms*/, TransformState& transformState) const
151 // If a container was specified, and was not 0 or the RenderView,
152 // then we should have found it by now.
153 ASSERT_UNUSED(repaintContainer, !repaintContainer || repaintContainer == this);
155 #ifdef ANDROID_FIXED_ELEMENTS
156 #if ENABLE(COMPOSITED_FIXED_ELEMENTS)
157 const Settings * settings = document()->settings();
158 if (settings && (settings->viewportWidth() == -1 || settings->viewportWidth() == 0) &&
159 !settings->viewportUserScalable())
164 if (fixed && m_frameView)
165 transformState.move(m_frameView->scrollOffset());
168 void RenderView::mapAbsoluteToLocalPoint(bool fixed, bool /*useTransforms*/, TransformState& transformState) const
170 #ifdef ANDROID_FIXED_ELEMENTS
171 #if ENABLE(COMPOSITED_FIXED_ELEMENTS)
172 const Settings * settings = document()->settings();
173 if (settings && (settings->viewportWidth() == -1 || settings->viewportWidth() == 0) &&
174 !settings->viewportUserScalable())
179 if (fixed && m_frameView)
180 transformState.move(-m_frameView->scrollOffset());
183 void RenderView::paint(PaintInfo& paintInfo, int tx, int ty)
185 // If we ever require layout but receive a paint anyway, something has gone horribly wrong.
186 ASSERT(!needsLayout());
187 paintObject(paintInfo, tx, ty);
190 static inline bool isComposited(RenderObject* object)
192 return object->hasLayer() && toRenderBoxModelObject(object)->layer()->isComposited();
195 static inline bool rendererObscuresBackground(RenderObject* object)
197 return object && object->style()->visibility() == VISIBLE
198 && object->style()->opacity() == 1
199 && !object->style()->hasTransform()
200 && !isComposited(object);
203 void RenderView::paintBoxDecorations(PaintInfo& paintInfo, int, int)
205 // Check to see if we are enclosed by a layer that requires complex painting rules. If so, we cannot blit
206 // when scrolling, and we need to use slow repaints. Examples of layers that require this are transparent layers,
207 // layers with reflections, or transformed layers.
208 // FIXME: This needs to be dynamic. We should be able to go back to blitting if we ever stop being inside
209 // a transform, transparency layer, etc.
211 for (elt = document()->ownerElement(); view() && elt && elt->renderer(); elt = elt->document()->ownerElement()) {
212 RenderLayer* layer = elt->renderer()->enclosingLayer();
213 if (layer->requiresSlowRepaints()) {
214 frameView()->setUseSlowRepaints();
218 #if USE(ACCELERATED_COMPOSITING)
219 if (RenderLayer* compositingLayer = layer->enclosingCompositingLayer()) {
220 if (!compositingLayer->backing()->paintingGoesToWindow()) {
221 frameView()->setUseSlowRepaints();
228 if (document()->ownerElement() || !view())
231 bool rootFillsViewport = false;
232 Node* documentElement = document()->documentElement();
233 if (RenderObject* rootRenderer = documentElement ? documentElement->renderer() : 0) {
234 // The document element's renderer is currently forced to be a block, but may not always be.
235 RenderBox* rootBox = rootRenderer->isBox() ? toRenderBox(rootRenderer) : 0;
236 rootFillsViewport = rootBox && !rootBox->x() && !rootBox->y() && rootBox->width() >= width() && rootBox->height() >= height();
239 // If painting will entirely fill the view, no need to fill the background.
240 if (rootFillsViewport && rendererObscuresBackground(firstChild()))
243 // This code typically only executes if the root element's visibility has been set to hidden,
244 // or there is a transform on the <html>.
245 // Only fill with the base background color (typically white) if we're the root document,
246 // since iframes/frames with no background in the child document should show the parent's background.
247 if (frameView()->isTransparent()) // FIXME: This needs to be dynamic. We should be able to go back to blitting if we ever stop being transparent.
248 frameView()->setUseSlowRepaints(); // The parent must show behind the child.
250 Color baseColor = frameView()->baseBackgroundColor();
251 if (baseColor.alpha() > 0) {
252 paintInfo.context->save();
253 paintInfo.context->setCompositeOperation(CompositeCopy);
254 paintInfo.context->fillRect(paintInfo.rect, baseColor, style()->colorSpace());
255 paintInfo.context->restore();
257 paintInfo.context->clearRect(paintInfo.rect);
261 bool RenderView::shouldRepaint(const IntRect& r) const
263 if (printing() || r.width() == 0 || r.height() == 0)
272 void RenderView::repaintViewRectangle(const IntRect& ur, bool immediate)
274 if (!shouldRepaint(ur))
277 // We always just invalidate the root view, since we could be an iframe that is clipped out
278 // or even invisible.
279 Element* elt = document()->ownerElement();
281 m_frameView->repaintContentRectangle(ur, immediate);
282 else if (RenderBox* obj = elt->renderBox()) {
283 IntRect vr = viewRect();
284 IntRect r = intersection(ur, vr);
286 // Subtract out the contentsX and contentsY offsets to get our coords within the viewing
288 r.move(-vr.x(), -vr.y());
290 // FIXME: Hardcoded offsets here are not good.
291 r.move(obj->borderLeft() + obj->paddingLeft(),
292 obj->borderTop() + obj->paddingTop());
293 obj->repaintRectangle(r, immediate);
297 void RenderView::repaintRectangleInViewAndCompositedLayers(const IntRect& ur, bool immediate)
299 if (!shouldRepaint(ur))
302 repaintViewRectangle(ur, immediate);
304 #if USE(ACCELERATED_COMPOSITING)
305 // If we're a frame, repaintViewRectangle will have repainted via a RenderObject in the
307 if (document()->ownerElement())
310 if (compositor()->inCompositingMode())
311 compositor()->repaintCompositedLayersAbsoluteRect(ur);
315 void RenderView::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& rect, bool fixed)
317 // If a container was specified, and was not 0 or the RenderView,
318 // then we should have found it by now.
319 ASSERT_UNUSED(repaintContainer, !repaintContainer || repaintContainer == this);
324 #ifdef ANDROID_FIXED_ELEMENTS
325 #if ENABLE(COMPOSITED_FIXED_ELEMENTS)
326 const Settings * settings = document()->settings();
327 if (settings && (settings->viewportWidth() == -1 || settings->viewportWidth() == 0) &&
328 !settings->viewportUserScalable())
333 if (fixed && m_frameView)
334 rect.move(m_frameView->scrollX(), m_frameView->scrollY());
336 // Apply our transform if we have one (because of full page zooming).
337 if (m_layer && m_layer->transform())
338 rect = m_layer->transform()->mapRect(rect);
341 void RenderView::absoluteRects(Vector<IntRect>& rects, int tx, int ty)
343 rects.append(IntRect(tx, ty, m_layer->width(), m_layer->height()));
346 void RenderView::absoluteQuads(Vector<FloatQuad>& quads)
348 quads.append(FloatRect(0, 0, m_layer->width(), m_layer->height()));
351 static RenderObject* rendererAfterPosition(RenderObject* object, unsigned offset)
356 RenderObject* child = object->childAt(offset);
357 return child ? child : object->nextInPreOrderAfterChildren();
360 IntRect RenderView::selectionBounds(bool clipToVisibleContent) const
362 document()->updateStyleIfNeeded();
364 typedef HashMap<RenderObject*, RenderSelectionInfo*> SelectionMap;
365 SelectionMap selectedObjects;
367 RenderObject* os = m_selectionStart;
368 RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
369 while (os && os != stop) {
370 if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
371 // Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
372 selectedObjects.set(os, new RenderSelectionInfo(os, clipToVisibleContent));
373 RenderBlock* cb = os->containingBlock();
374 while (cb && !cb->isRenderView()) {
375 RenderSelectionInfo* blockInfo = selectedObjects.get(cb);
378 selectedObjects.set(cb, new RenderSelectionInfo(cb, clipToVisibleContent));
379 cb = cb->containingBlock();
383 os = os->nextInPreOrder();
386 // Now create a single bounding box rect that encloses the whole selection.
388 SelectionMap::iterator end = selectedObjects.end();
389 for (SelectionMap::iterator i = selectedObjects.begin(); i != end; ++i) {
390 RenderSelectionInfo* info = i->second;
391 // RenderSelectionInfo::rect() is in the coordinates of the repaintContainer, so map to page coordinates.
392 IntRect currRect = info->rect();
393 if (RenderBoxModelObject* repaintContainer = info->repaintContainer()) {
394 FloatQuad absQuad = repaintContainer->localToAbsoluteQuad(FloatRect(currRect));
395 currRect = absQuad.enclosingBoundingBox();
397 selRect.unite(currRect);
403 #if USE(ACCELERATED_COMPOSITING)
404 // Compositing layer dimensions take outline size into account, so we have to recompute layer
405 // bounds when it changes.
406 // FIXME: This is ugly; it would be nice to have a better way to do this.
407 void RenderView::setMaximalOutlineSize(int o)
409 if (o != m_maximalOutlineSize) {
410 m_maximalOutlineSize = o;
412 // maximalOutlineSize affects compositing layer dimensions.
413 compositor()->setCompositingLayersNeedRebuild(); // FIXME: this really just needs to be a geometry update.
418 void RenderView::setSelection(RenderObject* start, int startPos, RenderObject* end, int endPos, SelectionRepaintMode blockRepaintMode)
420 // Make sure both our start and end objects are defined.
421 // Check www.msnbc.com and try clicking around to find the case where this happened.
422 if ((start && !end) || (end && !start))
425 // Just return if the selection hasn't changed.
426 if (m_selectionStart == start && m_selectionStartPos == startPos &&
427 m_selectionEnd == end && m_selectionEndPos == endPos)
430 // Record the old selected objects. These will be used later
431 // when we compare against the new selected objects.
432 int oldStartPos = m_selectionStartPos;
433 int oldEndPos = m_selectionEndPos;
435 // Objects each have a single selection rect to examine.
436 typedef HashMap<RenderObject*, RenderSelectionInfo*> SelectedObjectMap;
437 SelectedObjectMap oldSelectedObjects;
438 SelectedObjectMap newSelectedObjects;
440 // Blocks contain selected objects and fill gaps between them, either on the left, right, or in between lines and blocks.
441 // In order to get the repaint rect right, we have to examine left, middle, and right rects individually, since otherwise
442 // the union of those rects might remain the same even when changes have occurred.
443 typedef HashMap<RenderBlock*, RenderBlockSelectionInfo*> SelectedBlockMap;
444 SelectedBlockMap oldSelectedBlocks;
445 SelectedBlockMap newSelectedBlocks;
447 RenderObject* os = m_selectionStart;
448 RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
449 while (os && os != stop) {
450 if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
451 // Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
452 oldSelectedObjects.set(os, new RenderSelectionInfo(os, true));
453 if (blockRepaintMode == RepaintNewXOROld) {
454 RenderBlock* cb = os->containingBlock();
455 while (cb && !cb->isRenderView()) {
456 RenderBlockSelectionInfo* blockInfo = oldSelectedBlocks.get(cb);
459 oldSelectedBlocks.set(cb, new RenderBlockSelectionInfo(cb));
460 cb = cb->containingBlock();
465 os = os->nextInPreOrder();
468 // Now clear the selection.
469 SelectedObjectMap::iterator oldObjectsEnd = oldSelectedObjects.end();
470 for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i)
471 i->first->setSelectionState(SelectionNone);
473 // set selection start and end
474 m_selectionStart = start;
475 m_selectionStartPos = startPos;
476 m_selectionEnd = end;
477 m_selectionEndPos = endPos;
479 // Update the selection status of all objects between m_selectionStart and m_selectionEnd
480 if (start && start == end)
481 start->setSelectionState(SelectionBoth);
484 start->setSelectionState(SelectionStart);
486 end->setSelectionState(SelectionEnd);
489 RenderObject* o = start;
490 stop = rendererAfterPosition(end, endPos);
492 while (o && o != stop) {
493 if (o != start && o != end && o->canBeSelectionLeaf())
494 o->setSelectionState(SelectionInside);
495 o = o->nextInPreOrder();
498 m_layer->clearBlockSelectionGapsBounds();
500 // Now that the selection state has been updated for the new objects, walk them again and
501 // put them in the new objects list.
503 while (o && o != stop) {
504 if ((o->canBeSelectionLeaf() || o == start || o == end) && o->selectionState() != SelectionNone) {
505 newSelectedObjects.set(o, new RenderSelectionInfo(o, true));
506 RenderBlock* cb = o->containingBlock();
507 while (cb && !cb->isRenderView()) {
508 RenderBlockSelectionInfo* blockInfo = newSelectedBlocks.get(cb);
511 newSelectedBlocks.set(cb, new RenderBlockSelectionInfo(cb));
512 cb = cb->containingBlock();
516 o = o->nextInPreOrder();
520 // We built the maps, but we aren't going to use them.
521 // We need to delete the values, otherwise they'll all leak!
522 deleteAllValues(oldSelectedObjects);
523 deleteAllValues(newSelectedObjects);
524 deleteAllValues(oldSelectedBlocks);
525 deleteAllValues(newSelectedBlocks);
529 m_frameView->beginDeferredRepaints();
531 // Have any of the old selected objects changed compared to the new selection?
532 for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) {
533 RenderObject* obj = i->first;
534 RenderSelectionInfo* newInfo = newSelectedObjects.get(obj);
535 RenderSelectionInfo* oldInfo = i->second;
536 if (!newInfo || oldInfo->rect() != newInfo->rect() || oldInfo->state() != newInfo->state() ||
537 (m_selectionStart == obj && oldStartPos != m_selectionStartPos) ||
538 (m_selectionEnd == obj && oldEndPos != m_selectionEndPos)) {
542 newSelectedObjects.remove(obj);
549 // Any new objects that remain were not found in the old objects dict, and so they need to be updated.
550 SelectedObjectMap::iterator newObjectsEnd = newSelectedObjects.end();
551 for (SelectedObjectMap::iterator i = newSelectedObjects.begin(); i != newObjectsEnd; ++i) {
552 RenderSelectionInfo* newInfo = i->second;
557 // Have any of the old blocks changed?
558 SelectedBlockMap::iterator oldBlocksEnd = oldSelectedBlocks.end();
559 for (SelectedBlockMap::iterator i = oldSelectedBlocks.begin(); i != oldBlocksEnd; ++i) {
560 RenderBlock* block = i->first;
561 RenderBlockSelectionInfo* newInfo = newSelectedBlocks.get(block);
562 RenderBlockSelectionInfo* oldInfo = i->second;
563 if (!newInfo || oldInfo->rects() != newInfo->rects() || oldInfo->state() != newInfo->state()) {
567 newSelectedBlocks.remove(block);
574 // Any new blocks that remain were not found in the old blocks dict, and so they need to be updated.
575 SelectedBlockMap::iterator newBlocksEnd = newSelectedBlocks.end();
576 for (SelectedBlockMap::iterator i = newSelectedBlocks.begin(); i != newBlocksEnd; ++i) {
577 RenderBlockSelectionInfo* newInfo = i->second;
582 m_frameView->endDeferredRepaints();
585 void RenderView::clearSelection()
587 m_layer->repaintBlockSelectionGaps();
588 setSelection(0, -1, 0, -1, RepaintNewMinusOld);
591 void RenderView::selectionStartEnd(int& startPos, int& endPos) const
593 startPos = m_selectionStartPos;
594 endPos = m_selectionEndPos;
597 bool RenderView::printing() const
599 return document()->printing();
602 void RenderView::updateWidgetPositions()
604 // updateWidgetPosition() can possibly cause layout to be re-entered (via plug-ins running
605 // scripts in response to NPP_SetWindow, for example), so we need to keep the Widgets
606 // alive during enumeration.
608 size_t size = m_widgets.size();
610 Vector<RenderWidget*> renderWidgets;
611 renderWidgets.reserveCapacity(size);
613 RenderWidgetSet::const_iterator end = m_widgets.end();
614 for (RenderWidgetSet::const_iterator it = m_widgets.begin(); it != end; ++it) {
615 renderWidgets.uncheckedAppend(*it);
619 for (size_t i = 0; i < size; ++i)
620 renderWidgets[i]->updateWidgetPosition();
622 for (size_t i = 0; i < size; ++i)
623 renderWidgets[i]->widgetPositionsUpdated();
625 for (size_t i = 0; i < size; ++i)
626 renderWidgets[i]->deref(renderArena());
629 void RenderView::addWidget(RenderWidget* o)
634 void RenderView::removeWidget(RenderWidget* o)
639 IntRect RenderView::viewRect() const
642 return IntRect(0, 0, width(), height());
644 return m_frameView->visibleContentRect();
648 int RenderView::docHeight() const
650 int h = lowestPosition();
652 // FIXME: This doesn't do any margin collapsing.
653 // Instead of this dh computation we should keep the result
654 // when we call RenderBlock::layout.
656 for (RenderBox* c = firstChildBox(); c; c = c->nextSiblingBox())
657 dh += c->height() + c->marginTop() + c->marginBottom();
665 int RenderView::docWidth() const
667 int w = rightmostPosition();
669 for (RenderBox* c = firstChildBox(); c; c = c->nextSiblingBox()) {
670 int dw = c->width() + c->marginLeft() + c->marginRight();
678 int RenderView::viewHeight() const
681 if (!printing() && m_frameView) {
682 height = m_frameView->layoutHeight();
683 height = m_frameView->useFixedLayout() ? ceilf(style()->effectiveZoom() * float(height)) : height;
688 int RenderView::viewWidth() const
691 if (!printing() && m_frameView) {
692 width = m_frameView->layoutWidth();
693 width = m_frameView->useFixedLayout() ? ceilf(style()->effectiveZoom() * float(width)) : width;
698 float RenderView::zoomFactor() const
700 Frame* frame = m_frameView->frame();
701 return frame ? frame->pageZoomFactor() : 1;
704 void RenderView::pushLayoutState(RenderObject* root)
706 ASSERT(m_layoutStateDisableCount == 0);
707 ASSERT(m_layoutState == 0);
709 m_layoutState = new (renderArena()) LayoutState(root);
712 bool RenderView::shouldDisableLayoutStateForSubtree(RenderObject* renderer) const
714 RenderObject* o = renderer;
716 if (o->hasColumns() || o->hasTransform() || o->hasReflection())
723 void RenderView::updateHitTestResult(HitTestResult& result, const IntPoint& point)
725 if (result.innerNode())
728 Node* node = document()->documentElement();
730 result.setInnerNode(node);
731 if (!result.innerNonSharedNode())
732 result.setInnerNonSharedNode(node);
733 result.setLocalPoint(point);
737 // FIXME: This function is obsolete and only used by embedded WebViews inside AppKit NSViews.
738 // Do not add callers of this function!
739 // The idea here is to take into account what object is moving the pagination point, and
740 // thus choose the best place to chop it.
741 void RenderView::setBestTruncatedAt(int y, RenderBoxModelObject* forRenderer, bool forcedBreak)
743 // Nobody else can set a page break once we have a forced break.
744 if (m_legacyPrinting.m_forcedPageBreak)
747 // Forced breaks always win over unforced breaks.
749 m_legacyPrinting.m_forcedPageBreak = true;
750 m_legacyPrinting.m_bestTruncatedAt = y;
754 // Prefer the widest object that tries to move the pagination point
755 IntRect boundingBox = forRenderer->borderBoundingBox();
756 if (boundingBox.width() > m_legacyPrinting.m_truncatorWidth) {
757 m_legacyPrinting.m_truncatorWidth = boundingBox.width();
758 m_legacyPrinting.m_bestTruncatedAt = y;
762 #if USE(ACCELERATED_COMPOSITING)
763 bool RenderView::usesCompositing() const
765 return m_compositor && m_compositor->inCompositingMode();
768 RenderLayerCompositor* RenderView::compositor()
771 m_compositor.set(new RenderLayerCompositor(this));
773 return m_compositor.get();
777 void RenderView::didMoveOnscreen()
779 #if USE(ACCELERATED_COMPOSITING)
781 m_compositor->didMoveOnscreen();
785 void RenderView::willMoveOffscreen()
787 #if USE(ACCELERATED_COMPOSITING)
789 m_compositor->willMoveOffscreen();
793 } // namespace WebCore