2 * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
3 * 1999 Lars Knoll <knoll@kde.org>
4 * 1999 Antti Koivisto <koivisto@kde.org>
5 * 2000 Dirk Mueller <mueller@kde.org>
6 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
7 * (C) 2006 Graham Dennis (graham.dennis@gmail.com)
8 * (C) 2006 Alexey Proskuryakov (ap@nypop.com)
9 * Copyright (C) 2009 Google Inc. All rights reserved.
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
21 * You should have received a copy of the GNU Library General Public License
22 * along with this library; see the file COPYING.LIB. If not, write to
23 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 * Boston, MA 02110-1301, USA.
28 #include "FrameView.h"
30 #include "AXObjectCache.h"
31 #include "CSSStyleSelector.h"
33 #include "ChromeClient.h"
34 #include "DocLoader.h"
35 #include "EventHandler.h"
36 #include "FloatRect.h"
37 #include "FocusController.h"
39 #include "FrameLoader.h"
40 #include "FrameLoaderClient.h"
41 #include "FrameTree.h"
42 #include "GraphicsContext.h"
43 #include "HTMLDocument.h"
44 #include "HTMLFrameElement.h"
45 #include "HTMLFrameSetElement.h"
46 #include "HTMLNames.h"
47 #include "InspectorTimelineAgent.h"
48 #include "OverflowEvent.h"
49 #include "RenderEmbeddedObject.h"
50 #include "RenderLayer.h"
51 #include "RenderPart.h"
52 #include "RenderScrollbar.h"
53 #include "RenderScrollbarPart.h"
54 #include "RenderTheme.h"
55 #include "RenderView.h"
57 #include "TextResourceDecoder.h"
58 #include <wtf/CurrentTime.h>
60 #ifdef ANDROID_INSTRUMENT
61 #include "FrameTree.h"
62 #include "TimeCounter.h"
65 #if USE(ACCELERATED_COMPOSITING)
66 #include "RenderLayerCompositor.h"
70 #include "SVGDocument.h"
71 #include "SVGLocatable.h"
73 #include "SVGPreserveAspectRatio.h"
74 #include "SVGSVGElement.h"
75 #include "SVGViewElement.h"
76 #include "SVGViewSpec.h"
79 #if ENABLE(TILED_BACKING_STORE)
80 #include "TiledBackingStore.h"
84 #include "WebCoreFrameBridge.h"
89 using namespace HTMLNames;
91 double FrameView::sCurrentPaintTimeStamp = 0.0;
93 // REPAINT_THROTTLING now chooses default values for throttling parameters.
94 // Should be removed when applications start using runtime configuration.
95 #if ENABLE(REPAINT_THROTTLING)
97 double FrameView::s_deferredRepaintDelay = 0.025;
98 // Negative value would mean that first few repaints happen without a delay
99 double FrameView::s_initialDeferredRepaintDelayDuringLoading = 0;
100 // The delay grows on each repaint to this maximum value
101 double FrameView::s_maxDeferredRepaintDelayDuringLoading = 2.5;
102 // On each repaint the delay increses by this amount
103 double FrameView::s_deferredRepaintDelayIncrementDuringLoading = 0.5;
105 // FIXME: Repaint throttling could be good to have on all platform.
106 // The balance between CPU use and repaint frequency will need some tuning for desktop.
107 // More hooks may be needed to reset the delay on things like GIF and CSS animations.
108 double FrameView::s_deferredRepaintDelay = 0;
109 double FrameView::s_initialDeferredRepaintDelayDuringLoading = 0;
110 double FrameView::s_maxDeferredRepaintDelayDuringLoading = 0;
111 double FrameView::s_deferredRepaintDelayIncrementDuringLoading = 0;
114 // The maximum number of updateWidgets iterations that should be done before returning.
115 static const unsigned maxUpdateWidgetsIterations = 2;
117 struct ScheduledEvent : Noncopyable {
118 RefPtr<Event> m_event;
119 RefPtr<Node> m_eventTarget;
122 static inline float parentZoomFactor(Frame* frame)
124 Frame* parent = frame->tree()->parent();
127 FrameView* parentView = parent->view();
130 return parentView->zoomFactor();
133 FrameView::FrameView(Frame* frame)
135 , m_canHaveScrollbars(true)
136 , m_slowRepaintObjectCount(0)
137 , m_fixedObjectCount(0)
138 , m_layoutTimer(this, &FrameView::layoutTimerFired)
140 , m_postLayoutTasksTimer(this, &FrameView::postLayoutTimerFired)
141 , m_isTransparent(false)
142 , m_baseBackgroundColor(Color::white)
143 , m_mediaType("screen")
145 , m_overflowStatusDirty(true)
146 , m_viewportRenderer(0)
147 , m_wasScrolledByUser(false)
148 , m_inProgrammaticScroll(false)
149 , m_deferredRepaintTimer(this, &FrameView::deferredRepaintTimerFired)
150 , m_shouldUpdateWhileOffscreen(true)
151 , m_deferSetNeedsLayouts(0)
152 , m_setNeedsLayoutWasDeferred(false)
154 , m_zoomFactor(parentZoomFactor(frame))
159 PassRefPtr<FrameView> FrameView::create(Frame* frame)
161 RefPtr<FrameView> view = adoptRef(new FrameView(frame));
163 return view.release();
166 PassRefPtr<FrameView> FrameView::create(Frame* frame, const IntSize& initialSize)
168 RefPtr<FrameView> view = adoptRef(new FrameView(frame));
169 view->Widget::setFrameRect(IntRect(view->pos(), initialSize));
171 return view.release();
174 FrameView::~FrameView()
176 if (m_postLayoutTasksTimer.isActive()) {
177 m_postLayoutTasksTimer.stop();
178 m_scheduledEvents.clear();
184 // Custom scrollbars should already be destroyed at this point
185 ASSERT(!horizontalScrollbar() || !horizontalScrollbar()->isCustomScrollbar());
186 ASSERT(!verticalScrollbar() || !verticalScrollbar()->isCustomScrollbar());
188 setHasHorizontalScrollbar(false); // Remove native scrollbars now before we lose the connection to the HostWindow.
189 setHasVerticalScrollbar(false);
191 ASSERT(!m_scrollCorner);
192 ASSERT(m_scheduledEvents.isEmpty());
193 ASSERT(!m_enqueueEvents);
196 ASSERT(m_frame->view() != this || !m_frame->contentRenderer());
197 RenderPart* renderer = m_frame->ownerRenderer();
198 if (renderer && renderer->widget() == this)
199 renderer->setWidget(0);
203 void FrameView::reset()
205 m_useSlowRepaints = false;
206 m_isOverlapped = false;
207 m_contentIsOpaque = false;
210 m_layoutTimer.stop();
212 m_delayedLayout = false;
213 m_doFullRepaint = true;
214 m_layoutSchedulingEnabled = true;
217 m_nestedLayoutCount = 0;
218 m_postLayoutTasksTimer.stop();
219 m_firstLayout = true;
220 m_firstLayoutCallbackPending = false;
221 m_wasScrolledByUser = false;
222 m_lastLayoutSize = IntSize();
223 m_lastZoomFactor = 1.0f;
225 m_deferringRepaints = 0;
227 m_repaintRects.clear();
228 m_deferredRepaintDelay = s_initialDeferredRepaintDelayDuringLoading;
229 m_deferredRepaintTimer.stop();
231 m_paintBehavior = PaintBehaviorNormal;
232 m_isPainting = false;
233 m_isVisuallyNonEmpty = false;
234 m_firstVisuallyNonEmptyLayoutCallbackPending = true;
235 m_maintainScrollPositionAnchor = 0;
238 bool FrameView::isFrameView() const
243 void FrameView::clearFrame()
248 void FrameView::resetScrollbars()
250 // Reset the document's scrollbars back to our defaults before we yield the floor.
251 m_firstLayout = true;
252 setScrollbarsSuppressed(true);
253 if (m_canHaveScrollbars)
254 setScrollbarModes(ScrollbarAuto, ScrollbarAuto);
256 setScrollbarModes(ScrollbarAlwaysOff, ScrollbarAlwaysOff);
257 setScrollbarsSuppressed(false);
260 void FrameView::init()
264 m_margins = IntSize(-1, -1); // undefined
267 // Propagate the marginwidth/height and scrolling modes to the view.
268 Element* ownerElement = m_frame && m_frame->document() ? m_frame->document()->ownerElement() : 0;
269 if (ownerElement && (ownerElement->hasTagName(frameTag) || ownerElement->hasTagName(iframeTag))) {
270 HTMLFrameElement* frameElt = static_cast<HTMLFrameElement*>(ownerElement);
271 if (frameElt->scrollingMode() == ScrollbarAlwaysOff)
272 setCanHaveScrollbars(false);
273 int marginWidth = frameElt->getMarginWidth();
274 int marginHeight = frameElt->getMarginHeight();
275 if (marginWidth != -1)
276 setMarginWidth(marginWidth);
277 if (marginHeight != -1)
278 setMarginHeight(marginHeight);
282 void FrameView::detachCustomScrollbars()
287 Scrollbar* horizontalBar = horizontalScrollbar();
288 if (horizontalBar && horizontalBar->isCustomScrollbar())
289 setHasHorizontalScrollbar(false);
291 Scrollbar* verticalBar = verticalScrollbar();
292 if (verticalBar && verticalBar->isCustomScrollbar())
293 setHasVerticalScrollbar(false);
295 if (m_scrollCorner) {
296 m_scrollCorner->destroy();
301 void FrameView::clear()
303 setCanBlitOnScroll(true);
308 if (RenderPart* renderer = m_frame->ownerRenderer())
309 renderer->viewCleared();
312 setScrollbarsSuppressed(true);
315 bool FrameView::didFirstLayout() const
317 return !m_firstLayout;
320 void FrameView::invalidateRect(const IntRect& rect)
324 hostWindow()->invalidateContentsAndWindow(rect, false /*immediate*/);
331 RenderPart* renderer = m_frame->ownerRenderer();
335 IntRect repaintRect = rect;
336 repaintRect.move(renderer->borderLeft() + renderer->paddingLeft(),
337 renderer->borderTop() + renderer->paddingTop());
338 renderer->repaintRectangle(repaintRect);
341 void FrameView::setFrameRect(const IntRect& newRect)
343 IntRect oldRect = frameRect();
344 if (newRect == oldRect)
347 ScrollView::setFrameRect(newRect);
349 #if USE(ACCELERATED_COMPOSITING)
350 if (RenderView* root = m_frame->contentRenderer()) {
351 if (root->usesCompositing())
352 root->compositor()->frameViewDidChangeSize();
357 void FrameView::setMarginWidth(int w)
359 // make it update the rendering area when set
360 m_margins.setWidth(w);
363 void FrameView::setMarginHeight(int h)
365 // make it update the rendering area when set
366 m_margins.setHeight(h);
369 bool FrameView::avoidScrollbarCreation()
373 // with frame flattening no subframe can have scrollbars
374 // but we also cannot turn scrollbars of as we determine
375 // our flattening policy using that.
377 if (!m_frame->ownerElement())
380 if (!m_frame->settings() || m_frame->settings()->frameFlatteningEnabled())
386 void FrameView::setCanHaveScrollbars(bool canHaveScrollbars)
388 m_canHaveScrollbars = canHaveScrollbars;
389 ScrollView::setCanHaveScrollbars(canHaveScrollbars);
392 void FrameView::updateCanHaveScrollbars()
396 scrollbarModes(hMode, vMode);
397 if (hMode == ScrollbarAlwaysOff && vMode == ScrollbarAlwaysOff)
398 m_canHaveScrollbars = false;
400 m_canHaveScrollbars = true;
403 PassRefPtr<Scrollbar> FrameView::createScrollbar(ScrollbarOrientation orientation)
405 // FIXME: We need to update the scrollbar dynamically as documents change (or as doc elements and bodies get discovered that have custom styles).
406 Document* doc = m_frame->document();
408 // Try the <body> element first as a scrollbar source.
409 Element* body = doc ? doc->body() : 0;
410 if (body && body->renderer() && body->renderer()->style()->hasPseudoStyle(SCROLLBAR))
411 return RenderScrollbar::createCustomScrollbar(this, orientation, body->renderer()->enclosingBox());
413 // If the <body> didn't have a custom style, then the root element might.
414 Element* docElement = doc ? doc->documentElement() : 0;
415 if (docElement && docElement->renderer() && docElement->renderer()->style()->hasPseudoStyle(SCROLLBAR))
416 return RenderScrollbar::createCustomScrollbar(this, orientation, docElement->renderBox());
418 // If we have an owning iframe/frame element, then it can set the custom scrollbar also.
419 RenderPart* frameRenderer = m_frame->ownerRenderer();
420 if (frameRenderer && frameRenderer->style()->hasPseudoStyle(SCROLLBAR))
421 return RenderScrollbar::createCustomScrollbar(this, orientation, 0, m_frame.get());
423 // Nobody set a custom style, so we just use a native scrollbar.
424 return ScrollView::createScrollbar(orientation);
427 void FrameView::setContentsSize(const IntSize& size)
429 if (size == contentsSize())
432 m_deferSetNeedsLayouts++;
434 ScrollView::setContentsSize(size);
436 Page* page = frame() ? frame()->page() : 0;
440 page->chrome()->contentsSizeChanged(frame(), size); //notify only
442 m_deferSetNeedsLayouts--;
444 if (!m_deferSetNeedsLayouts)
445 m_setNeedsLayoutWasDeferred = false; // FIXME: Find a way to make the deferred layout actually happen.
448 void FrameView::adjustViewSize()
450 ASSERT(m_frame->view() == this);
451 RenderView* root = m_frame->contentRenderer();
455 setContentsSize(IntSize(root->rightLayoutOverflow(), root->bottomLayoutOverflow()));
458 void FrameView::applyOverflowToViewport(RenderObject* o, ScrollbarMode& hMode, ScrollbarMode& vMode)
460 // Handle the overflow:hidden/scroll case for the body/html elements. WinIE treats
461 // overflow:hidden and overflow:scroll on <body> as applying to the document's
462 // scrollbars. The CSS2.1 draft states that HTML UAs should use the <html> or <body> element and XML/XHTML UAs should
463 // use the root element.
464 switch (o->style()->overflowX()) {
466 hMode = ScrollbarAlwaysOff;
469 hMode = ScrollbarAlwaysOn;
472 hMode = ScrollbarAuto;
475 // Don't set it at all.
479 switch (o->style()->overflowY()) {
481 vMode = ScrollbarAlwaysOff;
484 vMode = ScrollbarAlwaysOn;
487 vMode = ScrollbarAuto;
490 // Don't set it at all.
494 m_viewportRenderer = o;
497 #if USE(ACCELERATED_COMPOSITING)
498 void FrameView::updateCompositingLayers()
500 RenderView* view = m_frame->contentRenderer();
504 // This call will make sure the cached hasAcceleratedCompositing is updated from the pref
505 view->compositor()->cacheAcceleratedCompositingFlags();
506 view->compositor()->updateCompositingLayers(CompositingUpdateAfterLayoutOrStyleChange);
509 void FrameView::setNeedsOneShotDrawingSynchronization()
511 Page* page = frame() ? frame()->page() : 0;
513 page->chrome()->client()->setNeedsOneShotDrawingSynchronization();
516 #endif // USE(ACCELERATED_COMPOSITING)
518 bool FrameView::hasCompositedContent() const
520 #if USE(ACCELERATED_COMPOSITING)
521 if (RenderView* view = m_frame->contentRenderer())
522 return view->compositor()->inCompositingMode();
527 // Sometimes (for plug-ins) we need to eagerly go into compositing mode.
528 void FrameView::enterCompositingMode()
530 #if USE(ACCELERATED_COMPOSITING)
531 if (RenderView* view = m_frame->contentRenderer())
532 view->compositor()->enableCompositingMode();
536 bool FrameView::isEnclosedInCompositingLayer() const
538 #if USE(ACCELERATED_COMPOSITING)
539 RenderObject* frameOwnerRenderer = m_frame->ownerRenderer();
540 return frameOwnerRenderer && frameOwnerRenderer->containerForRepaint();
546 bool FrameView::syncCompositingStateRecursive()
548 #if USE(ACCELERATED_COMPOSITING)
549 ASSERT(m_frame->view() == this);
550 RenderView* contentRenderer = m_frame->contentRenderer();
551 if (!contentRenderer)
552 return true; // We don't want to keep trying to update layers if we have no renderer.
554 // If we sync compositing layers when a layout is pending, we may cause painting of compositing
555 // layer content to occur before layout has happened, which will cause paintContents() to bail.
559 if (GraphicsLayer* rootLayer = contentRenderer->compositor()->rootPlatformLayer())
560 rootLayer->syncCompositingState();
562 bool allSubframesSynced = true;
563 const HashSet<RefPtr<Widget> >* viewChildren = children();
564 HashSet<RefPtr<Widget> >::const_iterator end = viewChildren->end();
565 for (HashSet<RefPtr<Widget> >::const_iterator current = viewChildren->begin(); current != end; ++current) {
566 Widget* widget = (*current).get();
567 if (widget->isFrameView()) {
568 bool synced = static_cast<FrameView*>(widget)->syncCompositingStateRecursive();
569 allSubframesSynced &= synced;
572 return allSubframesSynced;
573 #else // USE(ACCELERATED_COMPOSITING)
578 bool FrameView::isSoftwareRenderable() const
580 #if USE(ACCELERATED_COMPOSITING)
581 RenderView* view = m_frame->contentRenderer();
585 return !view->compositor()->has3DContent();
591 void FrameView::didMoveOnscreen()
593 RenderView* view = m_frame->contentRenderer();
595 view->didMoveOnscreen();
598 void FrameView::willMoveOffscreen()
600 RenderView* view = m_frame->contentRenderer();
602 view->willMoveOffscreen();
605 RenderObject* FrameView::layoutRoot(bool onlyDuringLayout) const
607 return onlyDuringLayout && layoutPending() ? 0 : m_layoutRoot;
610 void FrameView::layout(bool allowSubtree)
615 m_layoutTimer.stop();
616 m_delayedLayout = false;
617 m_setNeedsLayoutWasDeferred = false;
619 // Protect the view from being deleted during layout (in recalcStyle)
620 RefPtr<FrameView> protector(this);
623 // FIXME: Do we need to set m_size.width here?
624 // FIXME: Should we set m_size.height here too?
625 m_size.setWidth(layoutWidth());
629 // we shouldn't enter layout() while painting
630 ASSERT(!isPainting());
634 #if ENABLE(INSPECTOR)
635 if (InspectorTimelineAgent* timelineAgent = inspectorTimelineAgent())
636 timelineAgent->willLayout();
639 if (!allowSubtree && m_layoutRoot) {
640 m_layoutRoot->markContainingBlocksForLayout(false);
644 ASSERT(m_frame->view() == this);
645 // This early return should be removed when rdar://5598072 is resolved. In the meantime, there is a
646 // gigantic CrashTracer because of this issue, and the early return will hopefully cause graceful
648 if (m_frame->view() != this)
651 Document* document = m_frame->document();
653 m_layoutSchedulingEnabled = false;
655 if (!m_nestedLayoutCount && m_postLayoutTasksTimer.isActive()) {
656 // This is a new top-level layout. If there are any remaining tasks from the previous
657 // layout, finish them now.
658 m_postLayoutTasksTimer.stop();
659 performPostLayoutTasks();
662 // Viewport-dependent media queries may cause us to need completely different style information.
664 if (document->styleSelector()->affectedByViewportChange())
665 document->updateStyleSelector();
667 // Always ensure our style info is up-to-date. This can happen in situations where
668 // the layout beats any sort of style recalc update that needs to occur.
669 if (m_frame->needsReapplyStyles())
670 m_frame->reapplyStyles();
671 else if (document->childNeedsStyleRecalc())
672 document->recalcStyle();
674 bool subtree = m_layoutRoot;
676 // If there is only one ref to this view left, then its going to be destroyed as soon as we exit,
677 // so there's no point to continuing to layout
678 if (protector->hasOneRef())
681 RenderObject* root = subtree ? m_layoutRoot : document->renderer();
683 // FIXME: Do we need to set m_size here?
684 m_layoutSchedulingEnabled = true;
688 #ifdef ANDROID_INSTRUMENT
689 if (!m_frame->tree() || !m_frame->tree()->parent())
690 android::TimeCounter::start(android::TimeCounter::LayoutTimeCounter);
693 m_nestedLayoutCount++;
697 if (m_canHaveScrollbars) {
698 hMode = ScrollbarAuto;
699 vMode = ScrollbarAuto;
701 hMode = ScrollbarAlwaysOff;
702 vMode = ScrollbarAlwaysOff;
706 Node* documentElement = document->documentElement();
707 RenderObject* rootRenderer = documentElement ? documentElement->renderer() : 0;
708 Node* body = document->body();
709 if (body && body->renderer()) {
710 if (body->hasTagName(framesetTag) && m_frame->settings() && !m_frame->settings()->frameFlatteningEnabled()) {
711 #if !defined(ANDROID_FLATTEN_IFRAME) && !defined(ANDROID_FLATTEN_FRAMESET)
712 body->renderer()->setChildNeedsLayout(true);
713 vMode = ScrollbarAlwaysOff;
714 hMode = ScrollbarAlwaysOff;
716 } else if (body->hasTagName(bodyTag)) {
717 if (!m_firstLayout && m_size.height() != layoutHeight() && body->renderer()->enclosingBox()->stretchesToViewHeight())
718 body->renderer()->setChildNeedsLayout(true);
719 // It's sufficient to just check the X overflow,
720 // since it's illegal to have visible in only one direction.
721 RenderObject* o = rootRenderer->style()->overflowX() == OVISIBLE && document->documentElement()->hasTagName(htmlTag) ? body->renderer() : rootRenderer;
722 applyOverflowToViewport(o, hMode, vMode);
724 } else if (rootRenderer) {
726 if (documentElement->isSVGElement()) {
727 if (!m_firstLayout && (m_size.width() != layoutWidth() || m_size.height() != layoutHeight()))
728 rootRenderer->setChildNeedsLayout(true);
730 applyOverflowToViewport(rootRenderer, hMode, vMode);
732 applyOverflowToViewport(rootRenderer, hMode, vMode);
735 #ifdef INSTRUMENT_LAYOUT_SCHEDULING
736 if (m_firstLayout && !document->ownerElement())
737 printf("Elapsed time before first layout: %d\n", document->elapsedTime());
741 m_doFullRepaint = !subtree && (m_firstLayout || toRenderView(root)->printing());
744 // Now set our scrollbar state for the layout.
745 ScrollbarMode currentHMode = horizontalScrollbarMode();
746 ScrollbarMode currentVMode = verticalScrollbarMode();
748 if (m_firstLayout || (hMode != currentHMode || vMode != currentVMode)) {
750 setScrollbarsSuppressed(true);
752 m_firstLayout = false;
753 m_firstLayoutCallbackPending = true;
754 m_lastLayoutSize = IntSize(width(), height());
755 m_lastZoomFactor = root->style()->zoom();
757 // Set the initial vMode to AlwaysOn if we're auto.
758 if (vMode == ScrollbarAuto)
759 setVerticalScrollbarMode(ScrollbarAlwaysOn); // This causes a vertical scrollbar to appear.
760 // Set the initial hMode to AlwaysOff if we're auto.
761 if (hMode == ScrollbarAuto)
762 setHorizontalScrollbarMode(ScrollbarAlwaysOff); // This causes a horizontal scrollbar to disappear.
764 setScrollbarModes(hMode, vMode);
765 setScrollbarsSuppressed(false, true);
767 setScrollbarModes(hMode, vMode);
770 IntSize oldSize = m_size;
772 m_size = IntSize(layoutWidth(), layoutHeight());
774 if (oldSize != m_size)
775 m_doFullRepaint = true;
778 RenderLayer* layer = root->enclosingLayer();
780 pauseScheduledEvents();
782 bool disableLayoutState = false;
784 RenderView* view = root->view();
785 disableLayoutState = view->shouldDisableLayoutStateForSubtree(root);
786 view->pushLayoutState(root);
787 if (disableLayoutState)
788 view->disableLayoutState();
792 beginDeferredRepaints();
794 endDeferredRepaints();
798 RenderView* view = root->view();
799 view->popLayoutState();
800 if (disableLayoutState)
801 view->enableLayoutState();
805 m_frame->selection()->setNeedsLayout();
806 m_frame->selection()->updateAppearance();
808 m_layoutSchedulingEnabled = true;
810 if (!subtree && !toRenderView(root)->printing())
813 // Now update the positions of all layers.
814 beginDeferredRepaints();
815 IntPoint cachedOffset;
816 layer->updateLayerPositions((m_doFullRepaint ? RenderLayer::DoFullRepaint : 0)
817 | RenderLayer::CheckForRepaint
818 | RenderLayer::IsCompositingUpdateRoot
819 | RenderLayer::UpdateCompositingLayers,
820 subtree ? 0 : &cachedOffset);
821 endDeferredRepaints();
823 #if USE(ACCELERATED_COMPOSITING)
824 updateCompositingLayers();
830 if (AXObjectCache::accessibilityEnabled())
831 root->document()->axObjectCache()->postNotification(root, AXObjectCache::AXLayoutComplete, true);
833 #if ENABLE(DASHBOARD_SUPPORT)
834 updateDashboardRegions();
837 #ifdef ANDROID_INSTRUMENT
838 if (!m_frame->tree()->parent())
839 android::TimeCounter::record(android::TimeCounter::LayoutTimeCounter, __FUNCTION__);
841 ASSERT(!root->needsLayout());
843 setCanBlitOnScroll(!useSlowRepaints());
845 if (document->hasListenerType(Document::OVERFLOWCHANGED_LISTENER))
846 updateOverflowStatus(layoutWidth() < contentsWidth(),
847 layoutHeight() < contentsHeight());
849 if (!m_postLayoutTasksTimer.isActive()) {
850 // Calls resumeScheduledEvents()
851 performPostLayoutTasks();
853 if (!m_postLayoutTasksTimer.isActive() && needsLayout()) {
854 // Post-layout widget updates or an event handler made us need layout again.
855 // Lay out again, but this time defer widget updates and event dispatch until after
857 m_postLayoutTasksTimer.startOneShot(0);
858 pauseScheduledEvents();
862 resumeScheduledEvents();
863 ASSERT(m_enqueueEvents);
866 #if ENABLE(INSPECTOR)
867 if (InspectorTimelineAgent* timelineAgent = inspectorTimelineAgent())
868 timelineAgent->didLayout();
871 m_nestedLayoutCount--;
874 void FrameView::addWidgetToUpdate(RenderEmbeddedObject* object)
876 if (!m_widgetUpdateSet)
877 m_widgetUpdateSet.set(new RenderEmbeddedObjectSet);
879 m_widgetUpdateSet->add(object);
882 void FrameView::removeWidgetToUpdate(RenderEmbeddedObject* object)
884 if (!m_widgetUpdateSet)
887 m_widgetUpdateSet->remove(object);
890 void FrameView::setMediaType(const String& mediaType)
892 m_mediaType = mediaType;
895 String FrameView::mediaType() const
897 // See if we have an override type.
898 String overrideType = m_frame->loader()->client()->overrideMediaType();
899 if (!overrideType.isNull())
904 void FrameView::adjustMediaTypeForPrinting(bool printing)
907 if (m_mediaTypeWhenNotPrinting.isNull())
908 m_mediaTypeWhenNotPrinting = mediaType();
909 setMediaType("print");
911 if (!m_mediaTypeWhenNotPrinting.isNull())
912 setMediaType(m_mediaTypeWhenNotPrinting);
913 m_mediaTypeWhenNotPrinting = String();
917 bool FrameView::useSlowRepaints() const
919 return m_useSlowRepaints || m_slowRepaintObjectCount > 0 || (platformWidget() && m_fixedObjectCount > 0) || m_isOverlapped || !m_contentIsOpaque;
922 bool FrameView::useSlowRepaintsIfNotOverlapped() const
924 return m_useSlowRepaints || m_slowRepaintObjectCount > 0 || (platformWidget() && m_fixedObjectCount > 0) || !m_contentIsOpaque;
927 void FrameView::setUseSlowRepaints()
929 m_useSlowRepaints = true;
930 setCanBlitOnScroll(false);
933 void FrameView::addSlowRepaintObject()
935 if (!m_slowRepaintObjectCount)
936 setCanBlitOnScroll(false);
937 m_slowRepaintObjectCount++;
940 void FrameView::removeSlowRepaintObject()
942 ASSERT(m_slowRepaintObjectCount > 0);
943 m_slowRepaintObjectCount--;
944 if (!m_slowRepaintObjectCount)
945 setCanBlitOnScroll(!useSlowRepaints());
948 void FrameView::addFixedObject()
950 if (!m_fixedObjectCount && platformWidget())
951 setCanBlitOnScroll(false);
952 ++m_fixedObjectCount;
955 void FrameView::removeFixedObject()
957 ASSERT(m_fixedObjectCount > 0);
958 --m_fixedObjectCount;
959 if (!m_fixedObjectCount)
960 setCanBlitOnScroll(!useSlowRepaints());
963 bool FrameView::scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect)
965 const size_t fixedObjectThreshold = 5;
967 RenderBlock::PositionedObjectsListHashSet* positionedObjects = 0;
968 if (RenderView* root = m_frame->contentRenderer())
969 positionedObjects = root->positionedObjects();
971 if (!positionedObjects || positionedObjects->isEmpty()) {
972 hostWindow()->scroll(scrollDelta, rectToScroll, clipRect);
976 // Get the rects of the fixed objects visible in the rectToScroll
977 Vector<IntRect, fixedObjectThreshold> subRectToUpdate;
978 bool updateInvalidatedSubRect = true;
979 RenderBlock::PositionedObjectsListHashSet::const_iterator end = positionedObjects->end();
980 for (RenderBlock::PositionedObjectsListHashSet::const_iterator it = positionedObjects->begin(); it != end; ++it) {
981 RenderBox* renderBox = *it;
982 if (renderBox->style()->position() != FixedPosition)
984 IntRect updateRect = renderBox->layer()->repaintRectIncludingDescendants();
985 updateRect = contentsToWindow(updateRect);
987 updateRect.intersect(rectToScroll);
988 if (!updateRect.isEmpty()) {
989 if (subRectToUpdate.size() >= fixedObjectThreshold) {
990 updateInvalidatedSubRect = false;
993 subRectToUpdate.append(updateRect);
998 if (updateInvalidatedSubRect) {
1000 hostWindow()->scroll(scrollDelta, rectToScroll, clipRect);
1002 // 2) update the area of fixed objects that has been invalidated
1003 size_t fixObjectsCount = subRectToUpdate.size();
1004 for (size_t i = 0; i < fixObjectsCount; ++i) {
1005 IntRect updateRect = subRectToUpdate[i];
1006 IntRect scrolledRect = updateRect;
1007 scrolledRect.move(scrollDelta);
1008 updateRect.unite(scrolledRect);
1009 updateRect.intersect(rectToScroll);
1010 hostWindow()->invalidateContentsAndWindow(updateRect, false);
1015 // the number of fixed objects exceed the threshold, we cannot use the fast path
1019 void FrameView::setIsOverlapped(bool isOverlapped)
1021 if (isOverlapped == m_isOverlapped)
1024 m_isOverlapped = isOverlapped;
1025 setCanBlitOnScroll(!useSlowRepaints());
1027 #if USE(ACCELERATED_COMPOSITING)
1028 // Overlap can affect compositing tests, so if it changes, we need to trigger
1029 // a recalcStyle in the parent document.
1030 if (hasCompositedContent()) {
1031 if (Element* ownerElement = m_frame->document()->ownerElement())
1032 ownerElement->setNeedsStyleRecalc(SyntheticStyleChange);
1037 void FrameView::setContentIsOpaque(bool contentIsOpaque)
1039 if (contentIsOpaque == m_contentIsOpaque)
1042 m_contentIsOpaque = contentIsOpaque;
1043 setCanBlitOnScroll(!useSlowRepaints());
1046 void FrameView::restoreScrollbar()
1048 setScrollbarsSuppressed(false);
1051 bool FrameView::scrollToFragment(const KURL& url)
1053 // If our URL has no ref, then we have no place we need to jump to.
1054 // OTOH If CSS target was set previously, we want to set it to 0, recalc
1055 // and possibly repaint because :target pseudo class may have been
1056 // set (see bug 11321).
1057 if (!url.hasFragmentIdentifier() && !m_frame->document()->cssTarget())
1060 String fragmentIdentifier = url.fragmentIdentifier();
1061 if (scrollToAnchor(fragmentIdentifier))
1064 // Try again after decoding the ref, based on the document's encoding.
1065 if (TextResourceDecoder* decoder = m_frame->document()->decoder())
1066 return scrollToAnchor(decodeURLEscapeSequences(fragmentIdentifier, decoder->encoding()));
1071 bool FrameView::scrollToAnchor(const String& name)
1073 ASSERT(m_frame->document());
1075 if (!m_frame->document()->haveStylesheetsLoaded()) {
1076 m_frame->document()->setGotoAnchorNeededAfterStylesheetsLoad(true);
1080 m_frame->document()->setGotoAnchorNeededAfterStylesheetsLoad(false);
1082 Element* anchorNode = m_frame->document()->findAnchor(name);
1085 if (m_frame->document()->isSVGDocument()) {
1086 if (name.startsWith("xpointer(")) {
1087 // We need to parse the xpointer reference here
1088 } else if (name.startsWith("svgView(")) {
1089 RefPtr<SVGSVGElement> svg = static_cast<SVGDocument*>(m_frame->document())->rootElement();
1090 if (!svg->currentView()->parseViewSpec(name))
1092 svg->setUseCurrentView(true);
1094 if (anchorNode && anchorNode->hasTagName(SVGNames::viewTag)) {
1095 RefPtr<SVGViewElement> viewElement = anchorNode->hasTagName(SVGNames::viewTag) ? static_cast<SVGViewElement*>(anchorNode) : 0;
1096 if (viewElement.get()) {
1097 RefPtr<SVGSVGElement> svg = static_cast<SVGSVGElement*>(SVGLocatable::nearestViewportElement(viewElement.get()));
1098 svg->inheritViewAttributes(viewElement.get());
1102 // FIXME: need to decide which <svg> to focus on, and zoom to that one
1103 // FIXME: need to actually "highlight" the viewTarget(s)
1107 m_frame->document()->setCSSTarget(anchorNode); // Setting to null will clear the current target.
1109 // Implement the rule that "" and "top" both mean top of page as in other browsers.
1110 if (!anchorNode && !(name.isEmpty() || equalIgnoringCase(name, "top")))
1113 #ifdef ANDROID_SCROLL_ON_GOTO_ANCHOR
1114 // TODO(andreip): check with Grace if this is correct.
1115 android::WebFrame::getWebFrame(m_frame.get())->setUserInitiatedClick(true);
1117 maintainScrollPositionAtAnchor(anchorNode ? static_cast<Node*>(anchorNode) : m_frame->document());
1118 #ifdef ANDROID_SCROLL_ON_GOTO_ANCHOR
1119 android::WebFrame::getWebFrame(m_frame.get())->setUserInitiatedClick(false);
1124 void FrameView::maintainScrollPositionAtAnchor(Node* anchorNode)
1126 m_maintainScrollPositionAnchor = anchorNode;
1127 if (!m_maintainScrollPositionAnchor)
1130 // We need to update the layout before scrolling, otherwise we could
1131 // really mess things up if an anchor scroll comes at a bad moment.
1132 m_frame->document()->updateStyleIfNeeded();
1133 // Only do a layout if changes have occurred that make it necessary.
1134 if (m_frame->contentRenderer() && m_frame->contentRenderer()->needsLayout())
1140 void FrameView::setScrollPosition(const IntPoint& scrollPoint)
1142 bool wasInProgrammaticScroll = m_inProgrammaticScroll;
1143 m_inProgrammaticScroll = true;
1144 m_maintainScrollPositionAnchor = 0;
1145 ScrollView::setScrollPosition(scrollPoint);
1146 m_inProgrammaticScroll = wasInProgrammaticScroll;
1149 void FrameView::scrollPositionChangedViaPlatformWidget()
1151 scrollPositionChanged();
1154 void FrameView::scrollPositionChanged()
1156 frame()->eventHandler()->sendScrollEvent();
1157 repaintFixedElementsAfterScrolling();
1159 #if USE(ACCELERATED_COMPOSITING)
1160 if (RenderView* root = m_frame->contentRenderer()) {
1161 if (root->usesCompositing())
1162 root->compositor()->frameViewDidScroll(scrollPosition());
1167 void FrameView::repaintFixedElementsAfterScrolling()
1169 // For fixed position elements, update widget positions and compositing layers after scrolling,
1170 // but only if we're not inside of layout.
1171 if (!m_nestedLayoutCount && hasFixedObjects()) {
1172 if (RenderView* root = m_frame->contentRenderer()) {
1173 root->updateWidgetPositions();
1174 root->layer()->updateRepaintRectsAfterScroll();
1175 #if USE(ACCELERATED_COMPOSITING)
1176 root->compositor()->updateCompositingLayers(CompositingUpdateOnScroll);
1182 HostWindow* FrameView::hostWindow() const
1184 Page* page = frame() ? frame()->page() : 0;
1187 return page->chrome();
1190 const unsigned cRepaintRectUnionThreshold = 25;
1192 void FrameView::repaintContentRectangle(const IntRect& r, bool immediate)
1194 ASSERT(!m_frame->document()->ownerElement());
1196 double delay = adjustedDeferredRepaintDelay();
1197 if ((m_deferringRepaints || m_deferredRepaintTimer.isActive() || delay) && !immediate) {
1198 IntRect paintRect = r;
1199 if (!paintsEntireContents())
1200 paintRect.intersect(visibleContentRect());
1201 #ifdef ANDROID_CAPTURE_OFFSCREEN_PAINTS
1203 ScrollView::platformOffscreenContentRectangle(visibleContentRect(), r);
1205 if (paintRect.isEmpty())
1207 if (m_repaintCount == cRepaintRectUnionThreshold) {
1208 IntRect unionedRect;
1209 for (unsigned i = 0; i < cRepaintRectUnionThreshold; ++i)
1210 unionedRect.unite(m_repaintRects[i]);
1211 m_repaintRects.clear();
1212 m_repaintRects.append(unionedRect);
1214 if (m_repaintCount < cRepaintRectUnionThreshold)
1215 m_repaintRects.append(paintRect);
1217 m_repaintRects[0].unite(paintRect);
1220 if (!m_deferringRepaints && !m_deferredRepaintTimer.isActive())
1221 m_deferredRepaintTimer.startOneShot(delay);
1225 if (!immediate && isOffscreen() && !shouldUpdateWhileOffscreen())
1228 #if ENABLE(TILED_BACKING_STORE)
1229 if (frame()->tiledBackingStore()) {
1230 frame()->tiledBackingStore()->invalidate(r);
1234 ScrollView::repaintContentRectangle(r, immediate);
1237 void FrameView::visibleContentsResized()
1239 // We check to make sure the view is attached to a frame() as this method can
1240 // be triggered before the view is attached by Frame::createView(...) setting
1241 // various values such as setScrollBarModes(...) for example. An ASSERT is
1242 // triggered when a view is layout before being attached to a frame().
1243 if (!frame()->view())
1250 void FrameView::beginDeferredRepaints()
1252 Page* page = m_frame->page();
1253 if (page->mainFrame() != m_frame)
1254 return page->mainFrame()->view()->beginDeferredRepaints();
1256 m_deferringRepaints++;
1260 void FrameView::endDeferredRepaints()
1262 Page* page = m_frame->page();
1263 if (page->mainFrame() != m_frame)
1264 return page->mainFrame()->view()->endDeferredRepaints();
1266 ASSERT(m_deferringRepaints > 0);
1268 if (--m_deferringRepaints)
1271 if (m_deferredRepaintTimer.isActive())
1274 if (double delay = adjustedDeferredRepaintDelay()) {
1275 m_deferredRepaintTimer.startOneShot(delay);
1279 doDeferredRepaints();
1282 void FrameView::checkStopDelayingDeferredRepaints()
1284 if (!m_deferredRepaintTimer.isActive())
1287 Document* document = m_frame->document();
1288 if (document && (document->parsing() || document->docLoader()->requestCount()))
1291 m_deferredRepaintTimer.stop();
1293 doDeferredRepaints();
1296 void FrameView::doDeferredRepaints()
1298 ASSERT(!m_deferringRepaints);
1299 if (isOffscreen() && !shouldUpdateWhileOffscreen()) {
1300 m_repaintRects.clear();
1304 unsigned size = m_repaintRects.size();
1305 for (unsigned i = 0; i < size; i++) {
1306 #if ENABLE(TILED_BACKING_STORE)
1307 if (frame()->tiledBackingStore()) {
1308 frame()->tiledBackingStore()->invalidate(m_repaintRects[i]);
1312 ScrollView::repaintContentRectangle(m_repaintRects[i], false);
1314 m_repaintRects.clear();
1317 updateDeferredRepaintDelay();
1320 void FrameView::updateDeferredRepaintDelay()
1322 Document* document = m_frame->document();
1323 if (!document || (!document->parsing() && !document->docLoader()->requestCount())) {
1324 m_deferredRepaintDelay = s_deferredRepaintDelay;
1327 if (m_deferredRepaintDelay < s_maxDeferredRepaintDelayDuringLoading) {
1328 m_deferredRepaintDelay += s_deferredRepaintDelayIncrementDuringLoading;
1329 if (m_deferredRepaintDelay > s_maxDeferredRepaintDelayDuringLoading)
1330 m_deferredRepaintDelay = s_maxDeferredRepaintDelayDuringLoading;
1334 void FrameView::resetDeferredRepaintDelay()
1336 m_deferredRepaintDelay = 0;
1337 if (m_deferredRepaintTimer.isActive()) {
1338 m_deferredRepaintTimer.stop();
1339 if (!m_deferringRepaints)
1340 doDeferredRepaints();
1344 double FrameView::adjustedDeferredRepaintDelay() const
1346 if (!m_deferredRepaintDelay)
1348 double timeSinceLastPaint = currentTime() - m_lastPaintTime;
1349 return max(0., m_deferredRepaintDelay - timeSinceLastPaint);
1352 void FrameView::deferredRepaintTimerFired(Timer<FrameView>*)
1354 doDeferredRepaints();
1357 void FrameView::layoutTimerFired(Timer<FrameView>*)
1359 #ifdef INSTRUMENT_LAYOUT_SCHEDULING
1360 if (!m_frame->document()->ownerElement())
1361 printf("Layout timer fired at %d\n", m_frame->document()->elapsedTime());
1366 void FrameView::scheduleRelayout()
1368 // FIXME: We should assert the page is not in the page cache, but that is causing
1369 // too many false assertions. See <rdar://problem/7218118>.
1370 ASSERT(m_frame->view() == this);
1373 m_layoutRoot->markContainingBlocksForLayout(false);
1376 if (!m_layoutSchedulingEnabled)
1380 if (!m_frame->document()->shouldScheduleLayout())
1383 #if defined(ANDROID_FLATTEN_IFRAME) || defined(ANDROID_FLATTEN_FRAMESET)
1384 // This is the Android frame flattening code. The common code below is not
1385 // used as frameSetFlatteningEnabled() is false on Android.
1386 if (m_frame->ownerRenderer())
1387 m_frame->ownerRenderer()->setNeedsLayoutAndPrefWidthsRecalc();
1390 // When frame flattening is enabled, the contents of the frame affects layout of the parent frames.
1391 // Also invalidate parent frame starting from the owner element of this frame.
1392 if (m_frame->settings() && m_frame->settings()->frameFlatteningEnabled() && m_frame->ownerRenderer()) {
1393 if (m_frame->ownerElement()->hasTagName(iframeTag) || m_frame->ownerElement()->hasTagName(frameTag))
1394 m_frame->ownerRenderer()->setNeedsLayout(true, true);
1397 int delay = m_frame->document()->minimumLayoutDelay();
1398 if (m_layoutTimer.isActive() && m_delayedLayout && !delay)
1399 unscheduleRelayout();
1400 if (m_layoutTimer.isActive())
1403 m_delayedLayout = delay != 0;
1405 #ifdef INSTRUMENT_LAYOUT_SCHEDULING
1406 if (!m_frame->document()->ownerElement())
1407 printf("Scheduling layout for %d\n", delay);
1410 m_layoutTimer.startOneShot(delay * 0.001);
1413 static bool isObjectAncestorContainerOf(RenderObject* ancestor, RenderObject* descendant)
1415 for (RenderObject* r = descendant; r; r = r->container()) {
1422 void FrameView::scheduleRelayoutOfSubtree(RenderObject* relayoutRoot)
1424 ASSERT(m_frame->view() == this);
1426 if (m_frame->contentRenderer() && m_frame->contentRenderer()->needsLayout()) {
1428 relayoutRoot->markContainingBlocksForLayout(false);
1432 if (layoutPending() || !m_layoutSchedulingEnabled) {
1433 if (m_layoutRoot != relayoutRoot) {
1434 if (isObjectAncestorContainerOf(m_layoutRoot, relayoutRoot)) {
1435 // Keep the current root
1436 relayoutRoot->markContainingBlocksForLayout(false, m_layoutRoot);
1437 } else if (m_layoutRoot && isObjectAncestorContainerOf(relayoutRoot, m_layoutRoot)) {
1438 // Re-root at relayoutRoot
1439 m_layoutRoot->markContainingBlocksForLayout(false, relayoutRoot);
1440 m_layoutRoot = relayoutRoot;
1442 // Just do a full relayout
1444 m_layoutRoot->markContainingBlocksForLayout(false);
1446 relayoutRoot->markContainingBlocksForLayout(false);
1449 } else if (m_layoutSchedulingEnabled) {
1450 int delay = m_frame->document()->minimumLayoutDelay();
1451 m_layoutRoot = relayoutRoot;
1452 m_delayedLayout = delay != 0;
1453 m_layoutTimer.startOneShot(delay * 0.001);
1457 bool FrameView::layoutPending() const
1459 return m_layoutTimer.isActive();
1462 bool FrameView::needsLayout() const
1464 // This can return true in cases where the document does not have a body yet.
1465 // Document::shouldScheduleLayout takes care of preventing us from scheduling
1466 // layout in that case.
1469 RenderView* root = m_frame->contentRenderer();
1470 Document* document = m_frame->document();
1471 return layoutPending()
1472 || (root && root->needsLayout())
1474 || (document && document->childNeedsStyleRecalc()) // can occur when using WebKit ObjC interface
1475 || m_frame->needsReapplyStyles()
1476 || (m_deferSetNeedsLayouts && m_setNeedsLayoutWasDeferred);
1479 void FrameView::setNeedsLayout()
1481 if (m_deferSetNeedsLayouts) {
1482 m_setNeedsLayoutWasDeferred = true;
1485 RenderView* root = m_frame->contentRenderer();
1487 root->setNeedsLayout(true);
1490 void FrameView::unscheduleRelayout()
1492 if (!m_layoutTimer.isActive())
1495 #ifdef INSTRUMENT_LAYOUT_SCHEDULING
1496 if (!m_frame->document()->ownerElement())
1497 printf("Layout timer unscheduled at %d\n", m_frame->document()->elapsedTime());
1500 m_layoutTimer.stop();
1501 m_delayedLayout = false;
1504 bool FrameView::isTransparent() const
1506 return m_isTransparent;
1509 void FrameView::setTransparent(bool isTransparent)
1511 m_isTransparent = isTransparent;
1514 Color FrameView::baseBackgroundColor() const
1516 return m_baseBackgroundColor;
1519 void FrameView::setBaseBackgroundColor(Color bc)
1523 m_baseBackgroundColor = bc;
1526 void FrameView::updateBackgroundRecursively(const Color& backgroundColor, bool transparent)
1528 for (Frame* frame = m_frame.get(); frame; frame = frame->tree()->traverseNext(m_frame.get())) {
1529 FrameView* view = frame->view();
1533 view->setTransparent(transparent);
1534 view->setBaseBackgroundColor(backgroundColor);
1538 bool FrameView::shouldUpdateWhileOffscreen() const
1540 return m_shouldUpdateWhileOffscreen;
1543 void FrameView::setShouldUpdateWhileOffscreen(bool shouldUpdateWhileOffscreen)
1545 m_shouldUpdateWhileOffscreen = shouldUpdateWhileOffscreen;
1548 void FrameView::scheduleEvent(PassRefPtr<Event> event, PassRefPtr<Node> eventTarget)
1550 if (!m_enqueueEvents) {
1551 ExceptionCode ec = 0;
1552 eventTarget->dispatchEvent(event, ec);
1556 ScheduledEvent* scheduledEvent = new ScheduledEvent;
1557 scheduledEvent->m_event = event;
1558 scheduledEvent->m_eventTarget = eventTarget;
1559 m_scheduledEvents.append(scheduledEvent);
1562 void FrameView::pauseScheduledEvents()
1564 ASSERT(m_scheduledEvents.isEmpty() || m_enqueueEvents);
1568 void FrameView::resumeScheduledEvents()
1571 if (!m_enqueueEvents)
1572 dispatchScheduledEvents();
1573 ASSERT(m_scheduledEvents.isEmpty() || m_enqueueEvents);
1576 void FrameView::scrollToAnchor()
1578 RefPtr<Node> anchorNode = m_maintainScrollPositionAnchor;
1582 if (!anchorNode->renderer())
1586 if (anchorNode != m_frame->document())
1587 rect = anchorNode->getRect();
1589 // Scroll nested layers and frames to reveal the anchor.
1590 // Align to the top and to the closest side (this matches other browsers).
1591 anchorNode->renderer()->enclosingLayer()->scrollRectToVisible(rect, true, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignTopAlways);
1593 if (AXObjectCache::accessibilityEnabled())
1594 m_frame->document()->axObjectCache()->handleScrolledToAnchor(anchorNode.get());
1596 // scrollRectToVisible can call into setScrollPosition(), which resets m_maintainScrollPositionAnchor.
1597 m_maintainScrollPositionAnchor = anchorNode;
1600 bool FrameView::updateWidgets()
1602 if (m_nestedLayoutCount > 1 || !m_widgetUpdateSet || m_widgetUpdateSet->isEmpty())
1605 size_t size = m_widgetUpdateSet->size();
1607 Vector<RenderEmbeddedObject*> objects;
1608 objects.reserveCapacity(size);
1610 RenderEmbeddedObjectSet::const_iterator end = m_widgetUpdateSet->end();
1611 for (RenderEmbeddedObjectSet::const_iterator it = m_widgetUpdateSet->begin(); it != end; ++it) {
1612 objects.uncheckedAppend(*it);
1616 for (size_t i = 0; i < size; ++i) {
1617 RenderEmbeddedObject* object = objects[i];
1619 // The object may have been destroyed, but our manual ref() keeps the object from being deleted.
1620 object->updateWidget(false);
1621 object->updateWidgetPosition();
1623 m_widgetUpdateSet->remove(object);
1626 RenderArena* arena = m_frame->document()->renderArena();
1627 for (size_t i = 0; i < size; ++i)
1628 objects[i]->deref(arena);
1630 return m_widgetUpdateSet->isEmpty();
1633 void FrameView::performPostLayoutTasks()
1635 if (m_firstLayoutCallbackPending) {
1636 m_firstLayoutCallbackPending = false;
1637 m_frame->loader()->didFirstLayout();
1640 if (m_isVisuallyNonEmpty && m_firstVisuallyNonEmptyLayoutCallbackPending) {
1641 m_firstVisuallyNonEmptyLayoutCallbackPending = false;
1642 m_frame->loader()->didFirstVisuallyNonEmptyLayout();
1645 RenderView* root = m_frame->contentRenderer();
1647 root->updateWidgetPositions();
1649 for (unsigned i = 0; i < maxUpdateWidgetsIterations; i++) {
1650 if (updateWidgets())
1656 resumeScheduledEvents();
1658 if (!root->printing()) {
1659 IntSize currentSize = IntSize(width(), height());
1660 float currentZoomFactor = root->style()->zoom();
1661 bool resized = !m_firstLayout && (currentSize != m_lastLayoutSize || currentZoomFactor != m_lastZoomFactor);
1662 m_lastLayoutSize = currentSize;
1663 m_lastZoomFactor = currentZoomFactor;
1665 m_frame->eventHandler()->sendResizeEvent();
1669 void FrameView::postLayoutTimerFired(Timer<FrameView>*)
1671 performPostLayoutTasks();
1674 void FrameView::updateOverflowStatus(bool horizontalOverflow, bool verticalOverflow)
1676 if (!m_viewportRenderer)
1679 if (m_overflowStatusDirty) {
1680 m_horizontalOverflow = horizontalOverflow;
1681 m_verticalOverflow = verticalOverflow;
1682 m_overflowStatusDirty = false;
1686 bool horizontalOverflowChanged = (m_horizontalOverflow != horizontalOverflow);
1687 bool verticalOverflowChanged = (m_verticalOverflow != verticalOverflow);
1689 if (horizontalOverflowChanged || verticalOverflowChanged) {
1690 m_horizontalOverflow = horizontalOverflow;
1691 m_verticalOverflow = verticalOverflow;
1693 scheduleEvent(OverflowEvent::create(horizontalOverflowChanged, horizontalOverflow,
1694 verticalOverflowChanged, verticalOverflow),
1695 m_viewportRenderer->node());
1700 void FrameView::dispatchScheduledEvents()
1702 if (m_scheduledEvents.isEmpty())
1705 Vector<ScheduledEvent*> scheduledEventsCopy = m_scheduledEvents;
1706 m_scheduledEvents.clear();
1708 Vector<ScheduledEvent*>::iterator end = scheduledEventsCopy.end();
1709 for (Vector<ScheduledEvent*>::iterator it = scheduledEventsCopy.begin(); it != end; ++it) {
1710 ScheduledEvent* scheduledEvent = *it;
1712 ExceptionCode ec = 0;
1714 // Only dispatch events to nodes that are in the document
1715 if (scheduledEvent->m_eventTarget->inDocument())
1716 scheduledEvent->m_eventTarget->dispatchEvent(scheduledEvent->m_event, ec);
1718 delete scheduledEvent;
1722 IntRect FrameView::windowClipRect(bool clipToContents) const
1724 ASSERT(m_frame->view() == this);
1726 // Set our clip rect to be our contents.
1727 IntRect clipRect = contentsToWindow(visibleContentRect(!clipToContents));
1728 if (!m_frame || !m_frame->document() || !m_frame->document()->ownerElement())
1731 // Take our owner element and get the clip rect from the enclosing layer.
1732 Element* elt = m_frame->document()->ownerElement();
1733 RenderLayer* layer = elt->renderer()->enclosingLayer();
1734 // FIXME: layer should never be null, but sometimes seems to be anyway.
1737 FrameView* parentView = elt->document()->view();
1738 clipRect.intersect(parentView->windowClipRectForLayer(layer, true));
1742 IntRect FrameView::windowClipRectForLayer(const RenderLayer* layer, bool clipToLayerContents) const
1744 // If we have no layer, just return our window clip rect.
1746 return windowClipRect();
1748 // Apply the clip from the layer.
1750 if (clipToLayerContents)
1751 clipRect = layer->childrenClipRect();
1753 clipRect = layer->selfClipRect();
1754 clipRect = contentsToWindow(clipRect);
1755 return intersection(clipRect, windowClipRect());
1758 bool FrameView::isActive() const
1760 Page* page = frame()->page();
1761 return page && page->focusController()->isActive();
1764 void FrameView::valueChanged(Scrollbar* bar)
1766 // Figure out if we really moved.
1767 IntSize offset = scrollOffset();
1768 ScrollView::valueChanged(bar);
1769 if (offset != scrollOffset())
1770 scrollPositionChanged();
1771 frame()->loader()->client()->didChangeScrollOffset();
1774 void FrameView::invalidateScrollbarRect(Scrollbar* scrollbar, const IntRect& rect)
1776 // Add in our offset within the FrameView.
1777 IntRect dirtyRect = rect;
1778 dirtyRect.move(scrollbar->x(), scrollbar->y());
1779 invalidateRect(dirtyRect);
1782 void FrameView::getTickmarks(Vector<IntRect>& tickmarks) const
1784 tickmarks = frame()->document()->renderedRectsForMarkers(DocumentMarker::TextMatch);
1787 IntRect FrameView::windowResizerRect() const
1789 Page* page = frame() ? frame()->page() : 0;
1792 return page->chrome()->windowResizerRect();
1795 #if ENABLE(DASHBOARD_SUPPORT)
1796 void FrameView::updateDashboardRegions()
1798 Document* document = m_frame->document();
1799 if (!document->hasDashboardRegions())
1801 Vector<DashboardRegionValue> newRegions;
1802 document->renderBox()->collectDashboardRegions(newRegions);
1803 if (newRegions == document->dashboardRegions())
1805 document->setDashboardRegions(newRegions);
1806 Page* page = m_frame->page();
1809 page->chrome()->client()->dashboardRegionsChanged();
1813 void FrameView::invalidateScrollCorner()
1815 invalidateRect(scrollCornerRect());
1818 void FrameView::updateScrollCorner()
1820 RenderObject* renderer = 0;
1821 RefPtr<RenderStyle> cornerStyle;
1823 if (!scrollCornerRect().isEmpty()) {
1824 // Try the <body> element first as a scroll corner source.
1825 Document* doc = m_frame->document();
1826 Element* body = doc ? doc->body() : 0;
1827 if (body && body->renderer()) {
1828 renderer = body->renderer();
1829 cornerStyle = renderer->getUncachedPseudoStyle(SCROLLBAR_CORNER, renderer->style());
1833 // If the <body> didn't have a custom style, then the root element might.
1834 Element* docElement = doc ? doc->documentElement() : 0;
1835 if (docElement && docElement->renderer()) {
1836 renderer = docElement->renderer();
1837 cornerStyle = renderer->getUncachedPseudoStyle(SCROLLBAR_CORNER, renderer->style());
1842 // If we have an owning iframe/frame element, then it can set the custom scrollbar also.
1843 if (RenderPart* renderer = m_frame->ownerRenderer())
1844 cornerStyle = renderer->getUncachedPseudoStyle(SCROLLBAR_CORNER, renderer->style());
1849 if (!m_scrollCorner)
1850 m_scrollCorner = new (renderer->renderArena()) RenderScrollbarPart(renderer->document());
1851 m_scrollCorner->setStyle(cornerStyle.release());
1852 invalidateRect(scrollCornerRect());
1853 } else if (m_scrollCorner) {
1854 m_scrollCorner->destroy();
1859 void FrameView::paintScrollCorner(GraphicsContext* context, const IntRect& cornerRect)
1861 if (context->updatingControlTints()) {
1862 updateScrollCorner();
1866 if (m_scrollCorner) {
1867 m_scrollCorner->paintIntoRect(context, cornerRect.x(), cornerRect.y(), cornerRect);
1871 ScrollView::paintScrollCorner(context, cornerRect);
1874 bool FrameView::hasCustomScrollbars() const
1876 const HashSet<RefPtr<Widget> >* viewChildren = children();
1877 HashSet<RefPtr<Widget> >::const_iterator end = viewChildren->end();
1878 for (HashSet<RefPtr<Widget> >::const_iterator current = viewChildren->begin(); current != end; ++current) {
1879 Widget* widget = current->get();
1880 if (widget->isFrameView()) {
1881 if (static_cast<FrameView*>(widget)->hasCustomScrollbars())
1883 } else if (widget->isScrollbar()) {
1884 Scrollbar* scrollbar = static_cast<Scrollbar*>(widget);
1885 if (scrollbar->isCustomScrollbar())
1893 void FrameView::updateControlTints()
1895 // This is called when control tints are changed from aqua/graphite to clear and vice versa.
1896 // We do a "fake" paint, and when the theme gets a paint call, it can then do an invalidate.
1897 // This is only done if the theme supports control tinting. It's up to the theme and platform
1898 // to define when controls get the tint and to call this function when that changes.
1900 // Optimize the common case where we bring a window to the front while it's still empty.
1901 if (!m_frame || m_frame->loader()->url().isEmpty())
1904 if ((m_frame->contentRenderer() && m_frame->contentRenderer()->theme()->supportsControlTints()) || hasCustomScrollbars()) {
1907 PlatformGraphicsContext* const noContext = 0;
1908 GraphicsContext context(noContext);
1909 context.setUpdatingControlTints(true);
1910 if (platformWidget())
1911 paintContents(&context, visibleContentRect());
1913 paint(&context, frameRect());
1917 bool FrameView::wasScrolledByUser() const
1919 return m_wasScrolledByUser;
1922 void FrameView::setWasScrolledByUser(bool wasScrolledByUser)
1924 if (m_inProgrammaticScroll)
1926 m_maintainScrollPositionAnchor = 0;
1927 m_wasScrolledByUser = wasScrolledByUser;
1930 void FrameView::paintContents(GraphicsContext* p, const IntRect& rect)
1935 #if ENABLE(INSPECTOR)
1936 if (InspectorTimelineAgent* timelineAgent = inspectorTimelineAgent())
1937 timelineAgent->willPaint(rect);
1940 Document* document = frame()->document();
1944 if (document->printing())
1945 fillWithRed = false; // Printing, don't fill with red (can't remember why).
1946 else if (document->ownerElement())
1947 fillWithRed = false; // Subframe, don't fill with red.
1948 else if (isTransparent())
1949 fillWithRed = false; // Transparent, don't fill with red.
1950 else if (m_paintBehavior & PaintBehaviorSelectionOnly)
1951 fillWithRed = false; // Selections are transparent, don't fill with red.
1952 else if (m_nodeToDraw)
1953 fillWithRed = false; // Element images are transparent, don't fill with red.
1958 p->fillRect(rect, Color(0xFF, 0, 0), DeviceColorSpace);
1961 bool isTopLevelPainter = !sCurrentPaintTimeStamp;
1962 if (isTopLevelPainter)
1963 sCurrentPaintTimeStamp = currentTime();
1965 RenderView* contentRenderer = frame()->contentRenderer();
1966 if (!contentRenderer) {
1967 LOG_ERROR("called Frame::paint with nil renderer");
1971 ASSERT(!needsLayout());
1975 #if USE(ACCELERATED_COMPOSITING)
1976 if (!p->paintingDisabled()) {
1977 if (GraphicsLayer* rootLayer = contentRenderer->compositor()->rootPlatformLayer())
1978 rootLayer->syncCompositingState();
1982 ASSERT(!m_isPainting);
1984 m_isPainting = true;
1986 // m_nodeToDraw is used to draw only one element (and its descendants)
1987 RenderObject* eltRenderer = m_nodeToDraw ? m_nodeToDraw->renderer() : 0;
1989 PaintBehavior oldPaintBehavior = m_paintBehavior;
1990 if (m_paintBehavior == PaintBehaviorNormal)
1991 document->invalidateRenderedRectsForMarkersInRect(rect);
1993 if (document->printing())
1994 m_paintBehavior |= PaintBehaviorFlattenCompositingLayers;
1996 contentRenderer->layer()->paint(p, rect, m_paintBehavior, eltRenderer);
1998 m_paintBehavior = oldPaintBehavior;
2000 m_isPainting = false;
2001 m_lastPaintTime = currentTime();
2003 #if ENABLE(DASHBOARD_SUPPORT)
2004 // Regions may have changed as a result of the visibility/z-index of element changing.
2005 if (document->dashboardRegionsDirty())
2006 updateDashboardRegions();
2009 if (isTopLevelPainter)
2010 sCurrentPaintTimeStamp = 0;
2012 #if ENABLE(INSPECTOR)
2013 if (InspectorTimelineAgent* timelineAgent = inspectorTimelineAgent())
2014 timelineAgent->didPaint();
2018 void FrameView::setPaintBehavior(PaintBehavior behavior)
2020 m_paintBehavior = behavior;
2023 PaintBehavior FrameView::paintBehavior() const
2025 return m_paintBehavior;
2028 bool FrameView::isPainting() const
2030 return m_isPainting;
2033 void FrameView::setNodeToDraw(Node* node)
2035 m_nodeToDraw = node;
2038 void FrameView::layoutIfNeededRecursive()
2040 // We have to crawl our entire tree looking for any FrameViews that need
2041 // layout and make sure they are up to date.
2042 // Mac actually tests for intersection with the dirty region and tries not to
2043 // update layout for frames that are outside the dirty region. Not only does this seem
2044 // pointless (since those frames will have set a zero timer to layout anyway), but
2045 // it is also incorrect, since if two frames overlap, the first could be excluded from the dirty
2046 // region but then become included later by the second frame adding rects to the dirty region
2047 // when it lays out.
2052 const HashSet<RefPtr<Widget> >* viewChildren = children();
2053 HashSet<RefPtr<Widget> >::const_iterator end = viewChildren->end();
2054 for (HashSet<RefPtr<Widget> >::const_iterator current = viewChildren->begin(); current != end; ++current) {
2055 Widget* widget = (*current).get();
2056 if (widget->isFrameView())
2057 static_cast<FrameView*>(widget)->layoutIfNeededRecursive();
2060 // layoutIfNeededRecursive is called when we need to make sure layout is up-to-date before
2061 // painting, so we need to flush out any deferred repaints too.
2062 flushDeferredRepaints();
2065 void FrameView::flushDeferredRepaints()
2067 if (!m_deferredRepaintTimer.isActive())
2069 m_deferredRepaintTimer.stop();
2070 doDeferredRepaints();
2073 void FrameView::forceLayout(bool allowSubtree)
2075 layout(allowSubtree);
2076 // We cannot unschedule a pending relayout, since the force can be called with
2077 // a tiny rectangle from a drawRect update. By unscheduling we in effect
2078 // "validate" and stop the necessary full repaint from occurring. Basically any basic
2079 // append/remove DHTML is broken by this call. For now, I have removed the optimization
2080 // until we have a better invalidation stategy. -dwh
2081 //unscheduleRelayout();
2084 void FrameView::forceLayoutForPagination(const FloatSize& pageSize, float maximumShrinkFactor, Frame::AdjustViewSizeOrNot shouldAdjustViewSize)
2086 // Dumping externalRepresentation(m_frame->renderer()).ascii() is a good trick to see
2087 // the state of things before and after the layout
2088 RenderView *root = toRenderView(m_frame->document()->renderer());
2090 int pageW = ceilf(pageSize.width());
2091 m_pageHeight = pageSize.height() ? pageSize.height() : visibleHeight();
2092 root->setWidth(pageW);
2093 root->setNeedsLayoutAndPrefWidthsRecalc();
2096 // If we don't fit in the given page width, we'll lay out again. If we don't fit in the
2097 // page width when shrunk, we will lay out at maximum shrink and clip extra content.
2098 // FIXME: We are assuming a shrink-to-fit printing implementation. A cropping
2099 // implementation should not do this!
2100 int rightmostPos = root->rightmostPosition();
2101 if (rightmostPos > pageSize.width()) {
2102 pageW = std::min<int>(rightmostPos, ceilf(pageSize.width() * maximumShrinkFactor));
2103 if (pageSize.height())
2104 m_pageHeight = pageW / pageSize.width() * pageSize.height();
2105 root->setWidth(pageW);
2106 root->setNeedsLayoutAndPrefWidthsRecalc();
2111 if (shouldAdjustViewSize)
2116 void FrameView::adjustPageHeight(float *newBottom, float oldTop, float oldBottom, float /*bottomLimit*/)
2118 RenderView* root = m_frame->contentRenderer();
2120 // Use a context with painting disabled.
2121 GraphicsContext context((PlatformGraphicsContext*)0);
2122 root->setTruncatedAt((int)floorf(oldBottom));
2123 IntRect dirtyRect(0, (int)floorf(oldTop), root->rightLayoutOverflow(), (int)ceilf(oldBottom - oldTop));
2124 root->layer()->paint(&context, dirtyRect);
2125 *newBottom = root->bestTruncatedAt();
2126 if (*newBottom == 0)
2127 *newBottom = oldBottom;
2129 *newBottom = oldBottom;
2132 IntRect FrameView::convertFromRenderer(const RenderObject* renderer, const IntRect& rendererRect) const
2134 IntRect rect = renderer->localToAbsoluteQuad(FloatRect(rendererRect)).enclosingBoundingBox();
2136 // Convert from page ("absolute") to FrameView coordinates.
2137 rect.move(-scrollX(), -scrollY());
2142 IntRect FrameView::convertToRenderer(const RenderObject* renderer, const IntRect& viewRect) const
2144 IntRect rect = viewRect;
2146 // Convert from FrameView coords into page ("absolute") coordinates.
2147 rect.move(scrollX(), scrollY());
2149 // FIXME: we don't have a way to map an absolute rect down to a local quad, so just
2150 // move the rect for now.
2151 rect.setLocation(roundedIntPoint(renderer->absoluteToLocal(rect.location(), false, true /* use transforms */)));
2155 IntPoint FrameView::convertFromRenderer(const RenderObject* renderer, const IntPoint& rendererPoint) const
2157 IntPoint point = roundedIntPoint(renderer->localToAbsolute(rendererPoint, false, true /* use transforms */));
2159 // Convert from page ("absolute") to FrameView coordinates.
2160 point.move(-scrollX(), -scrollY());
2164 IntPoint FrameView::convertToRenderer(const RenderObject* renderer, const IntPoint& viewPoint) const
2166 IntPoint point = viewPoint;
2168 // Convert from FrameView coords into page ("absolute") coordinates.
2169 point += IntSize(scrollX(), scrollY());
2171 return roundedIntPoint(renderer->absoluteToLocal(point, false, true /* use transforms */));
2174 IntRect FrameView::convertToContainingView(const IntRect& localRect) const
2176 if (const ScrollView* parentScrollView = parent()) {
2177 if (parentScrollView->isFrameView()) {
2178 const FrameView* parentView = static_cast<const FrameView*>(parentScrollView);
2179 // Get our renderer in the parent view
2180 RenderPart* renderer = m_frame->ownerRenderer();
2184 IntRect rect(localRect);
2185 // Add borders and padding??
2186 rect.move(renderer->borderLeft() + renderer->paddingLeft(),
2187 renderer->borderTop() + renderer->paddingTop());
2188 return parentView->convertFromRenderer(renderer, rect);
2191 return Widget::convertToContainingView(localRect);
2197 IntRect FrameView::convertFromContainingView(const IntRect& parentRect) const
2199 if (const ScrollView* parentScrollView = parent()) {
2200 if (parentScrollView->isFrameView()) {
2201 const FrameView* parentView = static_cast<const FrameView*>(parentScrollView);
2203 // Get our renderer in the parent view
2204 RenderPart* renderer = m_frame->ownerRenderer();
2208 IntRect rect = parentView->convertToRenderer(renderer, parentRect);
2209 // Subtract borders and padding
2210 rect.move(-renderer->borderLeft() - renderer->paddingLeft(),
2211 -renderer->borderTop() - renderer->paddingTop());
2215 return Widget::convertFromContainingView(parentRect);
2221 IntPoint FrameView::convertToContainingView(const IntPoint& localPoint) const
2223 if (const ScrollView* parentScrollView = parent()) {
2224 if (parentScrollView->isFrameView()) {
2225 const FrameView* parentView = static_cast<const FrameView*>(parentScrollView);
2227 // Get our renderer in the parent view
2228 RenderPart* renderer = m_frame->ownerRenderer();
2232 IntPoint point(localPoint);
2234 // Add borders and padding
2235 point.move(renderer->borderLeft() + renderer->paddingLeft(),
2236 renderer->borderTop() + renderer->paddingTop());
2237 return parentView->convertFromRenderer(renderer, point);
2240 return Widget::convertToContainingView(localPoint);
2246 IntPoint FrameView::convertFromContainingView(const IntPoint& parentPoint) const
2248 if (const ScrollView* parentScrollView = parent()) {
2249 if (parentScrollView->isFrameView()) {
2250 const FrameView* parentView = static_cast<const FrameView*>(parentScrollView);
2252 // Get our renderer in the parent view
2253 RenderPart* renderer = m_frame->ownerRenderer();
2257 IntPoint point = parentView->convertToRenderer(renderer, parentPoint);
2258 // Subtract borders and padding
2259 point.move(-renderer->borderLeft() - renderer->paddingLeft(),
2260 -renderer->borderTop() - renderer->paddingTop());
2264 return Widget::convertFromContainingView(parentPoint);
2270 bool FrameView::shouldApplyTextZoom() const
2272 if (m_zoomFactor == 1)
2276 Page* page = m_frame->page();
2277 return page && page->settings()->zoomMode() == ZoomTextOnly;
2280 bool FrameView::shouldApplyPageZoom() const
2282 if (m_zoomFactor == 1)
2286 Page* page = m_frame->page();
2287 return page && page->settings()->zoomMode() == ZoomPage;
2290 void FrameView::setZoomFactor(float percent, ZoomMode mode)
2295 Page* page = m_frame->page();
2299 if (m_zoomFactor == percent && page->settings()->zoomMode() == mode)
2302 Document* document = m_frame->document();
2307 // Respect SVGs zoomAndPan="disabled" property in standalone SVG documents.
2308 // FIXME: How to handle compound documents + zoomAndPan="disabled"? Needs SVG WG clarification.
2309 if (document->isSVGDocument()) {
2310 if (!static_cast<SVGDocument*>(document)->zoomAndPanEnabled())
2312 if (document->renderer())
2313 document->renderer()->setNeedsLayout(true);
2317 if (mode == ZoomPage) {
2318 // Update the scroll position when doing a full page zoom, so the content stays in relatively the same position.
2319 IntPoint scrollPosition = this->scrollPosition();
2320 float percentDifference = (percent / m_zoomFactor);
2321 setScrollPosition(IntPoint(scrollPosition.x() * percentDifference, scrollPosition.y() * percentDifference));
2324 m_zoomFactor = percent;
2325 page->settings()->setZoomMode(mode);
2327 document->recalcStyle(Node::Force);
2329 for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) {
2330 if (FrameView* childView = child->view())
2331 childView->setZoomFactor(m_zoomFactor, mode);
2334 if (document->renderer() && document->renderer()->needsLayout() && didFirstLayout())
2340 void FrameView::setRepaintThrottlingDeferredRepaintDelay(double p)
2342 s_deferredRepaintDelay = p;
2345 // Negative value would mean that first few repaints happen without a delay
2346 void FrameView::setRepaintThrottlingnInitialDeferredRepaintDelayDuringLoading(double p)
2348 s_initialDeferredRepaintDelayDuringLoading = p;
2351 // The delay grows on each repaint to this maximum value
2352 void FrameView::setRepaintThrottlingMaxDeferredRepaintDelayDuringLoading(double p)
2354 s_maxDeferredRepaintDelayDuringLoading = p;
2357 // On each repaint the delay increases by this amount
2358 void FrameView::setRepaintThrottlingDeferredRepaintDelayIncrementDuringLoading(double p)
2360 s_deferredRepaintDelayIncrementDuringLoading = p;
2363 } // namespace WebCore