#include "config.h"
#include "FrameView.h"
#include "AXObjectCache.h"
#include "CSSStyleSelector.h"
#include "ChromeClient.h"
#include "DocLoader.h"
#include "EventHandler.h"
#include "FloatRect.h"
#include "FocusController.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameTree.h"
#include "GraphicsContext.h"
#include "HTMLDocument.h"
#include "HTMLFrameElement.h"
#include "HTMLFrameSetElement.h"
#include "HTMLNames.h"
#include "OverflowEvent.h"
#include "Page.h"
#include "RenderPart.h"
#include "RenderPartObject.h"
#include "RenderScrollbar.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "Settings.h"
#include <wtf/CurrentTime.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderLayerCompositor.h"
#endif
#include "Cache.h"
#include "DocLoader.h"
#include "DocumentLoader.h"
#include "SystemTime.h"
#include "SystemMemory.h"
#include "XMLTokenizer.h"
namespace WebCore {
using namespace HTMLNames;
double FrameView::sCurrentPaintTimeStamp = 0.0;
#if ENABLE(REPAINT_THROTTLING)
static const double deferredRepaintDelay = 0.025;
static const double initialDeferredRepaintDelayDuringLoading = 0;
static const double maxDeferredRepaintDelayDuringLoading = 2.5;
static const double deferredRepaintDelayIncrementDuringLoading = 0.5;
#else
static const double deferredRepaintDelay = 0;
static const double initialDeferredRepaintDelayDuringLoading = 0;
static const double maxDeferredRepaintDelayDuringLoading = 0;
static const double deferredRepaintDelayIncrementDuringLoading = 0;
#endif
struct ScheduledEvent {
RefPtr<Event> m_event;
RefPtr<EventTargetNode> m_eventTarget;
};
FrameView::FrameView(Frame* frame)
: m_refCount(1)
, m_frame(frame)
, m_vmode(ScrollbarAuto)
, m_hmode(ScrollbarAuto)
, m_slowRepaintObjectCount(0)
, m_layoutTimer(this, &FrameView::layoutTimerFired)
, m_layoutRoot(0)
, m_postLayoutTasksTimer(this, &FrameView::postLayoutTimerFired)
, m_needToInitScrollbars(true)
, m_isTransparent(false)
, m_baseBackgroundColor(Color::white)
, m_mediaType("screen")
, m_enqueueEvents(0)
, m_overflowStatusDirty(true)
, m_viewportRenderer(0)
, m_wasScrolledByUser(false)
, m_inProgrammaticScroll(false)
, m_deferredRepaintTimer(this, &FrameView::deferredRepaintTimerFired)
, m_shouldUpdateWhileOffscreen(true)
{
init();
show();
}
FrameView::FrameView(Frame* frame, const IntSize& initialSize)
: m_refCount(1)
, m_frame(frame)
, m_vmode(ScrollbarAuto)
, m_hmode(ScrollbarAuto)
, m_slowRepaintObjectCount(0)
, m_layoutTimer(this, &FrameView::layoutTimerFired)
, m_layoutRoot(0)
, m_postLayoutTasksTimer(this, &FrameView::postLayoutTimerFired)
, m_needToInitScrollbars(true)
, m_isTransparent(false)
, m_baseBackgroundColor(Color::white)
, m_mediaType("screen")
, m_enqueueEvents(0)
, m_overflowStatusDirty(true)
, m_viewportRenderer(0)
, m_wasScrolledByUser(false)
, m_inProgrammaticScroll(false)
, m_deferredRepaintTimer(this, &FrameView::deferredRepaintTimerFired)
, m_shouldUpdateWhileOffscreen(true)
{
init();
Widget::setFrameRect(IntRect(x(), y(), initialSize.width(), initialSize.height()));
show();
}
FrameView::~FrameView()
{
if (m_postLayoutTasksTimer.isActive()) {
m_postLayoutTasksTimer.stop();
m_scheduledEvents.clear();
m_enqueueEvents = 0;
}
resetScrollbars();
setHasHorizontalScrollbar(false); setHasVerticalScrollbar(false);
ASSERT(m_refCount == 0);
ASSERT(m_scheduledEvents.isEmpty());
ASSERT(!m_enqueueEvents);
if (m_frame) {
ASSERT(m_frame->view() != this || !m_frame->document() || !m_frame->contentRenderer());
RenderPart* renderer = m_frame->ownerRenderer();
if (renderer && renderer->widget() == this)
renderer->setWidget(0);
}
}
void FrameView::reset()
{
m_useSlowRepaints = false;
m_borderX = 30;
m_borderY = 30;
m_layoutTimer.stop();
m_layoutRoot = 0;
m_delayedLayout = false;
m_doFullRepaint = true;
m_layoutSchedulingEnabled = true;
m_midLayout = false;
m_layoutCount = 0;
m_nestedLayoutCount = 0;
m_postLayoutTasksTimer.stop();
m_firstLayout = true;
m_firstLayoutCallbackPending = false;
m_wasScrolledByUser = false;
m_lastLayoutSize = IntSize();
m_lastZoomFactor = 1.0f;
m_deferringRepaints = 0;
m_repaintCount = 0;
m_repaintRects.clear();
m_deferredRepaintDelay = initialDeferredRepaintDelayDuringLoading;
m_deferredRepaintTimer.stop();
m_lastPaintTime = 0;
m_paintRestriction = PaintRestrictionNone;
m_isPainting = false;
m_isVisuallyNonEmpty = false;
m_firstVisuallyNonEmptyLayoutCallbackPending = true;
}
bool FrameView::isFrameView() const
{
return true;
}
void FrameView::clearFrame()
{
m_frame = 0;
}
void FrameView::resetScrollbars()
{
m_firstLayout = true;
setScrollbarsSuppressed(true);
setScrollbarModes(m_hmode, m_vmode);
setScrollbarsSuppressed(false);
}
void FrameView::init()
{
reset();
m_margins = IntSize(-1, -1); m_size = IntSize();
Element* ownerElement = m_frame && m_frame->document() ? m_frame->document()->ownerElement() : 0;
if (ownerElement && (ownerElement->hasTagName(frameTag) || ownerElement->hasTagName(iframeTag))) {
HTMLFrameElement* frameElt = static_cast<HTMLFrameElement*>(ownerElement);
if (frameElt->scrollingMode() == ScrollbarAlwaysOff)
setCanHaveScrollbars(false);
int marginWidth = frameElt->getMarginWidth();
int marginHeight = frameElt->getMarginHeight();
if (marginWidth != -1)
setMarginWidth(marginWidth);
if (marginHeight != -1)
setMarginHeight(marginHeight);
}
}
void FrameView::clear()
{
setCanBlitOnScroll(true);
reset();
if (m_frame) {
if (RenderPart* renderer = m_frame->ownerRenderer())
renderer->viewCleared();
}
setScrollbarsSuppressed(true);
}
bool FrameView::didFirstLayout() const
{
return !m_firstLayout;
}
void FrameView::initScrollbars()
{
if (!m_needToInitScrollbars)
return;
m_needToInitScrollbars = false;
updateDefaultScrollbarState();
}
void FrameView::updateDefaultScrollbarState()
{
m_hmode = horizontalScrollbarMode();
m_vmode = verticalScrollbarMode();
setScrollbarModes(m_hmode, m_vmode);
}
void FrameView::invalidateRect(const IntRect& rect)
{
if (!parent()) {
if (hostWindow())
hostWindow()->repaint(rect, true);
return;
}
if (!m_frame)
return;
RenderPart* renderer = m_frame->ownerRenderer();
if (!renderer)
return;
IntRect repaintRect = rect;
repaintRect.move(renderer->borderLeft() + renderer->paddingLeft(),
renderer->borderTop() + renderer->paddingTop());
renderer->repaintRectangle(repaintRect);
}
void FrameView::setMarginWidth(int w)
{
m_margins.setWidth(w);
}
void FrameView::setMarginHeight(int h)
{
m_margins.setHeight(h);
}
void FrameView::setCanHaveScrollbars(bool canScroll)
{
ScrollView::setCanHaveScrollbars(canScroll);
scrollbarModes(m_hmode, m_vmode);
}
PassRefPtr<Scrollbar> FrameView::createScrollbar(ScrollbarOrientation orientation)
{
Document* doc = m_frame->document();
if (!doc)
return ScrollView::createScrollbar(orientation);
Element* body = doc->body();
if (body && body->renderer() && body->renderer()->style()->hasPseudoStyle(RenderStyle::SCROLLBAR))
return RenderScrollbar::createCustomScrollbar(this, orientation, body->renderBox());
Element* docElement = doc->documentElement();
if (docElement && docElement->renderer() && docElement->renderer()->style()->hasPseudoStyle(RenderStyle::SCROLLBAR))
return RenderScrollbar::createCustomScrollbar(this, orientation, docElement->renderBox());
RenderPart* frameRenderer = m_frame->ownerRenderer();
if (frameRenderer && frameRenderer->style()->hasPseudoStyle(RenderStyle::SCROLLBAR))
return RenderScrollbar::createCustomScrollbar(this, orientation, frameRenderer);
return ScrollView::createScrollbar(orientation);
}
void FrameView::setContentsSize(const IntSize& size)
{
ScrollView::setContentsSize(size);
Page* page = frame() ? frame()->page() : 0;
if (!page)
return;
page->chrome()->contentsSizeChanged(frame(), size); }
void FrameView::adjustViewSize()
{
ASSERT(m_frame->view() == this);
RenderView* root = m_frame->contentRenderer();
if (!root)
return;
setContentsSize(IntSize(root->overflowWidth(), root->overflowHeight()));
}
void FrameView::applyOverflowToViewport(RenderObject* o, ScrollbarMode& hMode, ScrollbarMode& vMode)
{
switch (o->style()->overflowX()) {
case OHIDDEN:
hMode = ScrollbarAlwaysOff;
break;
case OSCROLL:
hMode = ScrollbarAlwaysOn;
break;
case OAUTO:
hMode = ScrollbarAuto;
break;
default:
;
}
switch (o->style()->overflowY()) {
case OHIDDEN:
vMode = ScrollbarAlwaysOff;
break;
case OSCROLL:
vMode = ScrollbarAlwaysOn;
break;
case OAUTO:
vMode = ScrollbarAuto;
break;
default:
;
}
m_viewportRenderer = o;
}
#if USE(ACCELERATED_COMPOSITING)
void FrameView::updateCompositingLayers(CompositingUpdate updateType)
{
RenderView* view = m_frame->contentRenderer();
if (!view || !view->usesCompositing())
return;
if (updateType == ForcedCompositingUpdate)
view->compositor()->setCompositingLayersNeedUpdate();
view->compositor()->updateCompositingLayers();
}
void FrameView::setNeedsOneShotDrawingSynchronization()
{
Page* page = frame() ? frame()->page() : 0;
if (page)
page->chrome()->client()->setNeedsOneShotDrawingSynchronization();
}
#endif // USE(ACCELERATED_COMPOSITING)
void FrameView::didMoveOnscreen()
{
RenderView* view = m_frame->contentRenderer();
if (view)
view->didMoveOnscreen();
}
void FrameView::willMoveOffscreen()
{
RenderView* view = m_frame->contentRenderer();
if (view)
view->willMoveOffscreen();
}
RenderObject* FrameView::layoutRoot(bool onlyDuringLayout) const
{
return onlyDuringLayout && layoutPending() ? 0 : m_layoutRoot;
}
void FrameView::layout(bool allowSubtree)
{
if (m_midLayout)
return;
m_layoutTimer.stop();
m_delayedLayout = false;
RefPtr<FrameView> protector(this);
if (!m_frame) {
m_size.setWidth(layoutWidth());
return;
}
ASSERT(!isPainting());
if (isPainting())
return;
if (!allowSubtree && m_layoutRoot) {
m_layoutRoot->markContainingBlocksForLayout(false);
m_layoutRoot = 0;
}
ASSERT(m_frame->view() == this);
if (m_frame->view() != this)
return;
Document* document = m_frame->document();
if (!document) {
m_size.setWidth(layoutWidth());
return;
}
m_layoutSchedulingEnabled = false;
if (!m_nestedLayoutCount && m_postLayoutTasksTimer.isActive()) {
m_postLayoutTasksTimer.stop();
performPostLayoutTasks();
}
if (document->styleSelector()->affectedByViewportChange())
document->updateStyleSelector();
if (m_frame->needsReapplyStyles())
m_frame->reapplyStyles();
else if (document->hasChangedChild())
document->recalcStyle();
bool subtree = m_layoutRoot;
if (protector->hasOneRef())
return;
RenderObject* root = subtree ? m_layoutRoot : document->renderer();
if (!root) {
m_layoutSchedulingEnabled = true;
return;
}
#if ENABLE(IPHONE_PPT)
double startTime = currentTime();
#endif
m_nestedLayoutCount++;
ScrollbarMode hMode = m_hmode;
ScrollbarMode vMode = m_vmode;
if (!subtree) {
RenderObject* rootRenderer = document->documentElement() ? document->documentElement()->renderer() : 0;
Node* body = document->body();
if (body && body->renderer()) {
if (body->hasTagName(framesetTag)
&& !m_frame->settings()->flatFrameSetLayoutEnabled()
) {
body->renderer()->setChildNeedsLayout(true);
vMode = ScrollbarAlwaysOff;
hMode = ScrollbarAlwaysOff;
} else if (body->hasTagName(bodyTag)) {
if (!m_firstLayout && m_size.height() != layoutHeight()
&& toRenderBox(body->renderer())->stretchesToViewHeight())
body->renderer()->setChildNeedsLayout(true);
RenderObject* o = rootRenderer->style()->overflowX() == OVISIBLE && document->documentElement()->hasTagName(htmlTag) ? body->renderer() : rootRenderer;
applyOverflowToViewport(o, hMode, vMode);
}
} else if (rootRenderer)
applyOverflowToViewport(rootRenderer, hMode, vMode);
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (m_firstLayout && !document->ownerElement())
printf("Elapsed time before first layout: %d\n", document->elapsedTime());
#endif
}
m_doFullRepaint = !subtree && (m_firstLayout || static_cast<RenderView*>(root)->printing());
if (!subtree) {
ScrollbarMode currentHMode = horizontalScrollbarMode();
ScrollbarMode currentVMode = verticalScrollbarMode();
if (m_firstLayout || (hMode != currentHMode || vMode != currentVMode)) {
setScrollbarsSuppressed(true);
if (m_firstLayout) {
m_firstLayout = false;
m_firstLayoutCallbackPending = true;
m_lastLayoutSize = IntSize(width(), height());
m_lastZoomFactor = root->style()->zoom();
if (vMode == ScrollbarAuto)
setVerticalScrollbarMode(ScrollbarAlwaysOn); if (hMode == ScrollbarAuto)
setHorizontalScrollbarMode(ScrollbarAlwaysOff); }
setScrollbarModes(hMode, vMode);
setScrollbarsSuppressed(false, true);
}
IntSize oldSize = m_size;
m_size = IntSize(layoutWidth(), layoutHeight());
if (oldSize != m_size)
m_doFullRepaint = true;
}
RenderLayer* layer = root->enclosingLayer();
pauseScheduledEvents();
if (subtree)
root->view()->pushLayoutState(root);
m_midLayout = true;
beginDeferredRepaints();
root->layout();
float minZoomFontSize = frame()->settings()->minimumZoomFontSize();
float visWidth = frame()->page()->mainFrame()->visibleSize().width();
if (minZoomFontSize != 0 && visWidth != 0) {
root->adjustComputedFontSizesOnBlocks(minZoomFontSize, visWidth);
bool needsLayout = root->needsLayout();
if (needsLayout)
root->layout();
}
endDeferredRepaints();
m_midLayout = false;
if (subtree)
root->view()->popLayoutState();
m_layoutRoot = 0;
m_frame->invalidateSelection();
m_layoutSchedulingEnabled = true;
if (!subtree && !static_cast<RenderView*>(root)->printing())
adjustViewSize();
beginDeferredRepaints();
layer->updateLayerPositions(m_doFullRepaint);
endDeferredRepaints();
#if USE(ACCELERATED_COMPOSITING)
updateCompositingLayers();
#endif
m_layoutCount++;
#if PLATFORM(MAC)
if (AXObjectCache::accessibilityEnabled())
root->document()->axObjectCache()->postNotificationToElement(root, "AXLayoutComplete");
#endif
#if ENABLE(DASHBOARD_SUPPORT)
updateDashboardRegions();
#endif
#if ENABLE(TOUCH_EVENTS)
if (document->touchEventListeners().size() > 0)
document->setTouchEventListenersDirty(true);
#endif
#if ENABLE(IPHONE_PPT)
double endTime = currentTime();
if (m_frame->page() && m_frame->page()->mainFrame())
m_frame->page()->mainFrame()->didLayout(m_frame->loader()->firstLayoutDone(), endTime - startTime);
#endif
if (m_frame->page() && m_frame->page()->chrome() && m_frame->page()->chrome()->client())
m_frame->page()->chrome()->client()->didLayout();
ASSERT(!root->needsLayout());
setCanBlitOnScroll(!useSlowRepaints());
if (document->hasListenerType(Document::OVERFLOWCHANGED_LISTENER))
updateOverflowStatus(layoutWidth() < contentsWidth(),
layoutHeight() < contentsHeight());
if (!m_postLayoutTasksTimer.isActive()) {
performPostLayoutTasks();
if (needsLayout()) {
m_postLayoutTasksTimer.startOneShot(0);
pauseScheduledEvents();
layout();
}
} else {
resumeScheduledEvents();
ASSERT(m_enqueueEvents);
}
m_nestedLayoutCount--;
}
void FrameView::addWidgetToUpdate(RenderPartObject* object)
{
if (!m_widgetUpdateSet)
m_widgetUpdateSet.set(new HashSet<RenderPartObject*>);
m_widgetUpdateSet->add(object);
}
void FrameView::removeWidgetToUpdate(RenderPartObject* object)
{
if (!m_widgetUpdateSet)
return;
m_widgetUpdateSet->remove(object);
}
void FrameView::setMediaType(const String& mediaType)
{
m_mediaType = mediaType;
}
String FrameView::mediaType() const
{
String overrideType = m_frame->loader()->client()->overrideMediaType();
if (!overrideType.isNull())
return overrideType;
return m_mediaType;
}
bool FrameView::useSlowRepaints() const
{
return m_useSlowRepaints || m_slowRepaintObjectCount > 0;
}
void FrameView::setUseSlowRepaints()
{
m_useSlowRepaints = true;
setCanBlitOnScroll(false);
}
void FrameView::addSlowRepaintObject()
{
if (!m_slowRepaintObjectCount)
setCanBlitOnScroll(false);
m_slowRepaintObjectCount++;
}
void FrameView::removeSlowRepaintObject()
{
ASSERT(m_slowRepaintObjectCount > 0);
m_slowRepaintObjectCount--;
if (!m_slowRepaintObjectCount)
setCanBlitOnScroll(!m_useSlowRepaints);
}
void FrameView::restoreScrollbar()
{
setScrollbarsSuppressed(false);
}
void FrameView::scrollRectIntoViewRecursively(const IntRect& r)
{
bool wasInProgrammaticScroll = m_inProgrammaticScroll;
m_inProgrammaticScroll = true;
ScrollView::scrollRectIntoViewRecursively(r);
m_inProgrammaticScroll = wasInProgrammaticScroll;
}
void FrameView::setScrollPosition(const IntPoint& scrollPoint)
{
bool wasInProgrammaticScroll = m_inProgrammaticScroll;
m_inProgrammaticScroll = true;
ScrollView::setScrollPosition(scrollPoint);
m_inProgrammaticScroll = wasInProgrammaticScroll;
}
HostWindow* FrameView::hostWindow() const
{
Page* page = frame() ? frame()->page() : 0;
if (!page)
return 0;
return page->chrome();
}
const unsigned cRepaintRectUnionThreshold = 25;
void FrameView::repaintContentRectangle(const IntRect& r, bool immediate)
{
ASSERT(!m_frame->document()->ownerElement());
double delay = adjustedDeferredRepaintDelay();
if ((m_deferringRepaints || m_deferredRepaintTimer.isActive() || delay) && !immediate) {
IntRect visibleContent = visibleContentRect();
visibleContent.intersect(r);
if (visibleContent.isEmpty())
return;
if (m_repaintCount == cRepaintRectUnionThreshold) {
IntRect unionedRect;
for (unsigned i = 0; i < cRepaintRectUnionThreshold; ++i)
unionedRect.unite(m_repaintRects[i]);
m_repaintRects.clear();
m_repaintRects.append(unionedRect);
}
if (m_repaintCount < cRepaintRectUnionThreshold)
m_repaintRects.append(r);
else
m_repaintRects[0].unite(r);
m_repaintCount++;
if (!m_deferringRepaints && !m_deferredRepaintTimer.isActive())
m_deferredRepaintTimer.startOneShot(delay);
return;
}
if (!immediate && isOffscreen() && !shouldUpdateWhileOffscreen())
return;
ScrollView::repaintContentRectangle(r, immediate);
}
IntSize FrameView::offsetInWindow() const
{
ASSERT(m_frame->view() == this);
IntSize curOffset(x(), y());
if (!m_frame || !m_frame->document() || !m_frame->document()->ownerElement())
return curOffset;
Element* elt = m_frame->document()->ownerElement();
RenderLayer* layer = elt->renderer()->enclosingLayer();
if (!layer)
return curOffset;
FrameView* parentView = elt->document()->view();
curOffset += parentView->offsetInWindow();
return curOffset;
}
void FrameView::beginDeferredRepaints()
{
Page* page = m_frame->page();
if (page->mainFrame() != m_frame)
return page->mainFrame()->view()->beginDeferredRepaints();
m_deferringRepaints++;
}
void FrameView::endDeferredRepaints()
{
Page* page = m_frame->page();
if (page->mainFrame() != m_frame)
return page->mainFrame()->view()->endDeferredRepaints();
ASSERT(m_deferringRepaints > 0);
if (--m_deferringRepaints)
return;
if (m_deferredRepaintTimer.isActive())
return;
if (double delay = adjustedDeferredRepaintDelay()) {
m_deferredRepaintTimer.startOneShot(delay);
return;
}
doDeferredRepaints();
}
void FrameView::checkStopDelayingDeferredRepaints()
{
if (!m_deferredRepaintTimer.isActive())
return;
Document* document = m_frame->document();
if (document && (document->parsing() || document->docLoader()->requestCount()))
return;
m_deferredRepaintTimer.stop();
doDeferredRepaints();
}
void FrameView::doDeferredRepaints()
{
ASSERT(!m_deferringRepaints);
if (isOffscreen() && !shouldUpdateWhileOffscreen()) {
m_repaintRects.clear();
m_repaintCount = 0;
return;
}
unsigned size = m_repaintRects.size();
for (unsigned i = 0; i < size; i++)
ScrollView::repaintContentRectangle(m_repaintRects[i], false);
m_repaintRects.clear();
m_repaintCount = 0;
updateDeferredRepaintDelay();
}
void FrameView::updateDeferredRepaintDelay()
{
Document* document = m_frame->document();
if (!document || (!document->parsing() && !document->docLoader()->requestCount())) {
m_deferredRepaintDelay = deferredRepaintDelay;
return;
}
if (m_deferredRepaintDelay < maxDeferredRepaintDelayDuringLoading) {
m_deferredRepaintDelay += deferredRepaintDelayIncrementDuringLoading;
if (m_deferredRepaintDelay > maxDeferredRepaintDelayDuringLoading)
m_deferredRepaintDelay = maxDeferredRepaintDelayDuringLoading;
}
}
void FrameView::resetDeferredRepaintDelay()
{
m_deferredRepaintDelay = 0;
if (m_deferredRepaintTimer.isActive()) {
m_deferredRepaintTimer.stop();
if (!m_deferringRepaints)
doDeferredRepaints();
}
}
double FrameView::adjustedDeferredRepaintDelay() const
{
if (!m_deferredRepaintDelay)
return 0;
double timeSinceLastPaint = currentTime() - m_lastPaintTime;
return max(0., m_deferredRepaintDelay - timeSinceLastPaint);
}
void FrameView::deferredRepaintTimerFired(Timer<FrameView>*)
{
doDeferredRepaints();
}
void FrameView::layoutTimerFired(Timer<FrameView>*)
{
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (m_frame->document() && !m_frame->document()->ownerElement())
printf("Layout timer fired at %d\n", m_frame->document()->elapsedTime());
#endif
layout();
}
void FrameView::scheduleRelayout()
{
ASSERT(!m_frame->document() || !m_frame->document()->inPageCache());
ASSERT(m_frame->view() == this);
if (m_layoutRoot) {
m_layoutRoot->markContainingBlocksForLayout(false);
m_layoutRoot = 0;
}
if (!m_layoutSchedulingEnabled)
return;
if (!needsLayout())
return;
if (!m_frame->document() || !m_frame->document()->shouldScheduleLayout())
return;
m_frame->invalidateOwnerRendererLayoutIfNeeded();
int delay = m_frame->document()->minimumLayoutDelay();
if (m_layoutTimer.isActive() && m_delayedLayout && !delay)
unscheduleRelayout();
if (m_layoutTimer.isActive())
return;
m_delayedLayout = delay != 0;
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!m_frame->document()->ownerElement())
printf("Scheduling layout for %d\n", delay);
#endif
m_layoutTimer.startOneShot(delay * 0.001);
}
static bool isObjectAncestorContainerOf(RenderObject* ancestor, RenderObject* descendant)
{
for (RenderObject* r = descendant; r; r = r->container()) {
if (r == ancestor)
return true;
}
return false;
}
void FrameView::scheduleRelayoutOfSubtree(RenderObject* relayoutRoot)
{
ASSERT(m_frame->view() == this);
if (!m_layoutSchedulingEnabled || (m_frame->contentRenderer()
&& m_frame->contentRenderer()->needsLayout())) {
if (relayoutRoot)
relayoutRoot->markContainingBlocksForLayout(false);
return;
}
if (layoutPending()) {
if (m_layoutRoot != relayoutRoot) {
if (isObjectAncestorContainerOf(m_layoutRoot, relayoutRoot)) {
relayoutRoot->markContainingBlocksForLayout(false, m_layoutRoot);
} else if (m_layoutRoot && isObjectAncestorContainerOf(relayoutRoot, m_layoutRoot)) {
m_layoutRoot->markContainingBlocksForLayout(false, relayoutRoot);
m_layoutRoot = relayoutRoot;
} else {
if (m_layoutRoot)
m_layoutRoot->markContainingBlocksForLayout(false);
m_layoutRoot = 0;
relayoutRoot->markContainingBlocksForLayout(false);
}
}
} else {
int delay = m_frame->document()->minimumLayoutDelay();
m_layoutRoot = relayoutRoot;
m_delayedLayout = delay != 0;
m_layoutTimer.startOneShot(delay * 0.001);
}
}
bool FrameView::layoutPending() const
{
return m_layoutTimer.isActive();
}
bool FrameView::needsLayout() const
{
if (!m_frame)
return false;
RenderView* root = m_frame->contentRenderer();
Document* document = m_frame->document();
return layoutPending()
|| (root && root->needsLayout())
|| m_layoutRoot
|| (document && document->hasChangedChild()) || m_frame->needsReapplyStyles();
}
void FrameView::setNeedsLayout()
{
RenderView* root = m_frame->contentRenderer();
if (root)
root->setNeedsLayout(true);
}
void FrameView::unscheduleRelayout()
{
if (!m_layoutTimer.isActive())
return;
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (m_frame->document() && !m_frame->document()->ownerElement())
printf("Layout timer unscheduled at %d\n", m_frame->document()->elapsedTime());
#endif
m_layoutTimer.stop();
m_delayedLayout = false;
}
bool FrameView::isTransparent() const
{
return m_isTransparent;
}
void FrameView::setTransparent(bool isTransparent)
{
m_isTransparent = isTransparent;
}
Color FrameView::baseBackgroundColor() const
{
return m_baseBackgroundColor;
}
void FrameView::setBaseBackgroundColor(Color bc)
{
if (!bc.isValid())
bc = Color::white;
m_baseBackgroundColor = bc;
}
void FrameView::updateBackgroundRecursively(const Color& backgroundColor, bool transparent)
{
for (Frame* frame = m_frame.get(); frame; frame = frame->tree()->traverseNext(m_frame.get())) {
FrameView* view = frame->view();
if (!view)
continue;
view->setTransparent(transparent);
view->setBaseBackgroundColor(backgroundColor);
}
}
bool FrameView::shouldUpdateWhileOffscreen() const
{
return m_shouldUpdateWhileOffscreen;
}
void FrameView::setShouldUpdateWhileOffscreen(bool shouldUpdateWhileOffscreen)
{
m_shouldUpdateWhileOffscreen = shouldUpdateWhileOffscreen;
}
void FrameView::scheduleEvent(PassRefPtr<Event> event, PassRefPtr<EventTargetNode> eventTarget)
{
if (!m_enqueueEvents) {
ExceptionCode ec = 0;
eventTarget->dispatchEvent(event, ec);
return;
}
ScheduledEvent* scheduledEvent = new ScheduledEvent;
scheduledEvent->m_event = event;
scheduledEvent->m_eventTarget = eventTarget;
m_scheduledEvents.append(scheduledEvent);
}
void FrameView::pauseScheduledEvents()
{
ASSERT(m_scheduledEvents.isEmpty() || m_enqueueEvents);
m_enqueueEvents++;
}
void FrameView::resumeScheduledEvents()
{
m_enqueueEvents--;
if (!m_enqueueEvents)
dispatchScheduledEvents();
ASSERT(m_scheduledEvents.isEmpty() || m_enqueueEvents);
}
void FrameView::performPostLayoutTasks()
{
if (m_firstLayoutCallbackPending) {
m_firstLayoutCallbackPending = false;
m_frame->loader()->didFirstLayout();
}
if (m_isVisuallyNonEmpty && m_firstVisuallyNonEmptyLayoutCallbackPending) {
m_firstVisuallyNonEmptyLayoutCallbackPending = false;
m_frame->loader()->didFirstVisuallyNonEmptyLayout();
}
RenderView* root = m_frame->contentRenderer();
root->updateWidgetPositions();
if (m_widgetUpdateSet && m_nestedLayoutCount <= 1) {
Vector<RenderPartObject*> objectVector;
copyToVector(*m_widgetUpdateSet, objectVector);
size_t size = objectVector.size();
for (size_t i = 0; i < size; ++i) {
RenderPartObject* object = objectVector[i];
object->updateWidget(false);
if (m_widgetUpdateSet->contains(object))
object->updateWidgetPosition();
}
m_widgetUpdateSet->clear();
}
resumeScheduledEvents();
if (!root->printing()) {
IntSize currentSize = IntSize(width(), height());
float currentZoomFactor = root->style()->zoom();
bool resized = !m_firstLayout && (currentSize != m_lastLayoutSize || currentZoomFactor != m_lastZoomFactor);
m_lastLayoutSize = currentSize;
m_lastZoomFactor = currentZoomFactor;
DocumentLoader* documentLoader = m_frame->loader()->documentLoader();
if (resized && (!documentLoader || !documentLoader->isLoadingInAPISense()))
m_frame->sendResizeEvent();
}
}
void FrameView::setFrameRect(const IntRect& rect)
{
IntRect oldRect = frameRect();
if (rect == oldRect)
return;
ScrollView::setFrameRect(rect);
#if USE(ACCELERATED_COMPOSITING)
RenderView* view = m_frame->contentRenderer();
if (!view || !view->usesCompositing())
return;
view->compositor()->updateRootLayerPosition();
#endif
}
void FrameView::postLayoutTimerFired(Timer<FrameView>*)
{
performPostLayoutTasks();
}
void FrameView::updateOverflowStatus(bool horizontalOverflow, bool verticalOverflow)
{
if (!m_viewportRenderer)
return;
if (m_overflowStatusDirty) {
m_horizontalOverflow = horizontalOverflow;
m_verticalOverflow = verticalOverflow;
m_overflowStatusDirty = false;
return;
}
bool horizontalOverflowChanged = (m_horizontalOverflow != horizontalOverflow);
bool verticalOverflowChanged = (m_verticalOverflow != verticalOverflow);
if (horizontalOverflowChanged || verticalOverflowChanged) {
m_horizontalOverflow = horizontalOverflow;
m_verticalOverflow = verticalOverflow;
scheduleEvent(OverflowEvent::create(horizontalOverflowChanged, horizontalOverflow,
verticalOverflowChanged, verticalOverflow),
EventTargetNodeCast(m_viewportRenderer->element()));
}
}
void FrameView::dispatchScheduledEvents()
{
if (m_scheduledEvents.isEmpty())
return;
Vector<ScheduledEvent*> scheduledEventsCopy = m_scheduledEvents;
m_scheduledEvents.clear();
Vector<ScheduledEvent*>::iterator end = scheduledEventsCopy.end();
for (Vector<ScheduledEvent*>::iterator it = scheduledEventsCopy.begin(); it != end; ++it) {
ScheduledEvent* scheduledEvent = *it;
ExceptionCode ec = 0;
if (scheduledEvent->m_eventTarget->inDocument())
scheduledEvent->m_eventTarget->dispatchEvent(scheduledEvent->m_event, ec);
delete scheduledEvent;
}
}
IntRect FrameView::windowClipRect(bool clipToContents) const
{
ASSERT(m_frame->view() == this);
IntRect clipRect = contentsToWindow(visibleContentRect(!clipToContents));
if (!m_frame || !m_frame->document() || !m_frame->document()->ownerElement())
return clipRect;
Element* elt = m_frame->document()->ownerElement();
RenderLayer* layer = elt->renderer()->enclosingLayer();
if (!layer)
return clipRect;
FrameView* parentView = elt->document()->view();
clipRect.intersect(parentView->windowClipRectForLayer(layer, true));
return clipRect;
}
IntRect FrameView::windowClipRectForLayer(const RenderLayer* layer, bool clipToLayerContents) const
{
if (!layer)
return windowClipRect();
IntRect clipRect;
if (clipToLayerContents)
clipRect = layer->childrenClipRect();
else
clipRect = layer->selfClipRect();
clipRect = contentsToWindow(clipRect);
return intersection(clipRect, windowClipRect());
}
bool FrameView::isActive() const
{
Page* page = frame()->page();
return page && page->focusController()->isActive();
}
void FrameView::valueChanged(Scrollbar* bar)
{
IntSize offset = scrollOffset();
ScrollView::valueChanged(bar);
if (offset != scrollOffset())
frame()->sendScrollEvent();
}
void FrameView::invalidateScrollbarRect(Scrollbar* scrollbar, const IntRect& rect)
{
IntRect dirtyRect = rect;
dirtyRect.move(scrollbar->x(), scrollbar->y());
invalidateRect(dirtyRect);
}
void FrameView::getTickmarks(Vector<IntRect>& tickmarks) const
{
tickmarks = frame()->document()->renderedRectsForMarkers(DocumentMarker::TextMatch);
}
IntRect FrameView::windowResizerRect() const
{
Page* page = frame() ? frame()->page() : 0;
if (!page)
return IntRect();
return page->chrome()->windowResizerRect();
}
#if ENABLE(DASHBOARD_SUPPORT)
void FrameView::updateDashboardRegions()
{
Document* document = m_frame->document();
if (!document->hasDashboardRegions())
return;
Vector<DashboardRegionValue> newRegions;
document->renderBox()->collectDashboardRegions(newRegions);
if (newRegions == document->dashboardRegions())
return;
document->setDashboardRegions(newRegions);
Page* page = m_frame->page();
if (!page)
return;
page->chrome()->client()->dashboardRegionsChanged();
}
#endif
void FrameView::updateControlTints()
{
if (!m_frame || m_frame->loader()->url().isEmpty())
return;
if (theme()->supportsControlTints() && m_frame->contentRenderer()) {
if (needsLayout())
layout();
PlatformGraphicsContext* const noContext = 0;
GraphicsContext context(noContext);
context.setUpdatingControlTints(true);
if (platformWidget())
paintContents(&context, visibleContentRect());
else
paint(&context, frameRect());
}
}
bool FrameView::wasScrolledByUser() const
{
return m_wasScrolledByUser;
}
void FrameView::setWasScrolledByUser(bool wasScrolledByUser)
{
if (m_inProgrammaticScroll)
return;
m_wasScrolledByUser = wasScrolledByUser;
}
void FrameView::paintContents(GraphicsContext* p, const IntRect& rect)
{
if (!frame())
return;
Document* document = frame()->document();
if (!document)
return;
#ifndef NDEBUG
bool fillWithRed;
if (document || document->printing())
fillWithRed = false; else if (document->ownerElement())
fillWithRed = false; else if (isTransparent())
fillWithRed = false; else if (m_paintRestriction == PaintRestrictionSelectionOnly || m_paintRestriction == PaintRestrictionSelectionOnlyBlackText)
fillWithRed = false; else if (m_nodeToDraw)
fillWithRed = false; else
fillWithRed = true;
if (fillWithRed)
p->fillRect(rect, Color(0xFF, 0, 0));
#endif
bool isTopLevelPainter = !sCurrentPaintTimeStamp;
if (isTopLevelPainter)
sCurrentPaintTimeStamp = currentTime();
RenderView* contentRenderer = frame()->contentRenderer();
if (!contentRenderer) {
LOG_ERROR("called Frame::paint with nil renderer");
return;
}
ASSERT(!needsLayout());
ASSERT(!m_isPainting);
m_isPainting = true;
RenderObject* eltRenderer = m_nodeToDraw ? m_nodeToDraw->renderer() : 0;
if (m_paintRestriction == PaintRestrictionNone)
document->invalidateRenderedRectsForMarkersInRect(rect);
contentRenderer->layer()->paint(p, rect, m_paintRestriction, eltRenderer);
m_isPainting = false;
m_lastPaintTime = currentTime();
const unsigned memoryReserve = 2 * 1024 * 1024;
bool safeMemory = hasEnoughMemoryFor(memoryReserve);
if (!safeMemory && isTopLevelPainter)
cache()->pruneLiveResources(true);
#if ENABLE(DASHBOARD_SUPPORT)
if (document->dashboardRegionsDirty())
updateDashboardRegions();
#endif
if (isTopLevelPainter)
sCurrentPaintTimeStamp = 0;
}
void FrameView::setPaintRestriction(PaintRestriction pr)
{
m_paintRestriction = pr;
}
bool FrameView::isPainting() const
{
return m_isPainting;
}
void FrameView::setNodeToDraw(Node* node)
{
m_nodeToDraw = node;
}
void FrameView::layoutIfNeededRecursive()
{
if (needsLayout())
layout();
const HashSet<Widget*>* viewChildren = children();
HashSet<Widget*>::const_iterator end = viewChildren->end();
for (HashSet<Widget*>::const_iterator current = viewChildren->begin(); current != end; ++current)
if ((*current)->isFrameView())
static_cast<FrameView*>(*current)->layoutIfNeededRecursive();
if (m_deferredRepaintTimer.isActive()) {
m_deferredRepaintTimer.stop();
doDeferredRepaints();
}
}
}