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android / platform / external / chromium_org / third_party / WebKit / 29e85d2 / . / Source / core / frame / FrameView.cpp
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/*
* Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
* 1999 Lars Knoll <knoll@kde.org>
* 1999 Antti Koivisto <koivisto@kde.org>
* 2000 Dirk Mueller <mueller@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
* (C) 2006 Graham Dennis (graham.dennis@gmail.com)
* (C) 2006 Alexey Proskuryakov (ap@nypop.com)
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/frame/FrameView.h"
#include "core/HTMLNames.h"
#include "core/MediaTypeNames.h"
#include "core/accessibility/AXObjectCache.h"
#include "core/css/FontFaceSet.h"
#include "core/css/resolver/StyleResolver.h"
#include "core/dom/DocumentMarkerController.h"
#include "core/dom/Fullscreen.h"
#include "core/editing/FrameSelection.h"
#include "core/editing/RenderedPosition.h"
#include "core/events/OverflowEvent.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/fetch/ResourceLoadPriorityOptimizer.h"
#include "core/frame/FrameHost.h"
#include "core/frame/LocalFrame.h"
#include "core/frame/Settings.h"
#include "core/html/HTMLFrameElement.h"
#include "core/html/HTMLPlugInElement.h"
#include "core/html/parser/TextResourceDecoder.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "core/inspector/InspectorTraceEvents.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "core/page/Chrome.h"
#include "core/page/ChromeClient.h"
#include "core/page/EventHandler.h"
#include "core/page/FocusController.h"
#include "core/page/FrameTree.h"
#include "core/page/Page.h"
#include "core/page/scrolling/ScrollingCoordinator.h"
#include "core/paint/FramePainter.h"
#include "core/rendering/RenderCounter.h"
#include "core/rendering/RenderEmbeddedObject.h"
#include "core/rendering/RenderLayer.h"
#include "core/rendering/RenderListBox.h"
#include "core/rendering/RenderPart.h"
#include "core/rendering/RenderScrollbar.h"
#include "core/rendering/RenderScrollbarPart.h"
#include "core/rendering/RenderTheme.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/TextAutosizer.h"
#include "core/rendering/compositing/CompositedLayerMapping.h"
#include "core/rendering/compositing/CompositedSelectionBound.h"
#include "core/rendering/compositing/RenderLayerCompositor.h"
#include "core/rendering/style/RenderStyle.h"
#include "core/rendering/svg/RenderSVGRoot.h"
#include "core/svg/SVGDocumentExtensions.h"
#include "core/svg/SVGSVGElement.h"
#include "platform/HostWindow.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/ScriptForbiddenScope.h"
#include "platform/TraceEvent.h"
#include "platform/fonts/FontCache.h"
#include "platform/geometry/FloatRect.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/graphics/GraphicsContextStateSaver.h"
#include "platform/graphics/GraphicsLayer.h"
#include "platform/graphics/GraphicsLayerDebugInfo.h"
#include "platform/scroll/ScrollAnimator.h"
#include "platform/scroll/ScrollbarTheme.h"
#include "platform/text/TextStream.h"
#include "wtf/CurrentTime.h"
#include "wtf/StdLibExtras.h"
#include "wtf/TemporaryChange.h"
namespace blink {
using namespace HTMLNames;
double FrameView::s_currentFrameTimeStamp = 0.0;
// The maximum number of updateWidgets iterations that should be done before returning.
static const unsigned maxUpdateWidgetsIterations = 2;
static const double resourcePriorityUpdateDelayAfterScroll = 0.250;
FrameView::FrameView(LocalFrame* frame)
: m_frame(frame)
, m_canHaveScrollbars(true)
, m_slowRepaintObjectCount(0)
, m_hasPendingLayout(false)
, m_layoutSubtreeRoot(0)
, m_inSynchronousPostLayout(false)
, m_postLayoutTasksTimer(this, &FrameView::postLayoutTimerFired)
, m_updateWidgetsTimer(this, &FrameView::updateWidgetsTimerFired)
, m_isTransparent(false)
, m_baseBackgroundColor(Color::white)
, m_mediaType(MediaTypeNames::screen)
, m_overflowStatusDirty(true)
, m_viewportRenderer(0)
, m_wasScrolledByUser(false)
, m_inProgrammaticScroll(false)
, m_safeToPropagateScrollToParent(true)
, m_isTrackingPaintInvalidations(false)
, m_scrollCorner(nullptr)
, m_visibleContentScaleFactor(1)
, m_inputEventsScaleFactorForEmulation(1)
, m_layoutSizeFixedToFrameSize(true)
, m_didScrollTimer(this, &FrameView::didScrollTimerFired)
, m_topControlsViewportAdjustment(0)
, m_needsUpdateWidgetPositions(false)
#if ENABLE(OILPAN) && ENABLE(ASSERT)
, m_hasBeenDisposed(false)
#endif
, m_horizontalScrollbarMode(ScrollbarAuto)
, m_verticalScrollbarMode(ScrollbarAuto)
, m_horizontalScrollbarLock(false)
, m_verticalScrollbarLock(false)
, m_scrollbarsAvoidingResizer(0)
, m_scrollbarsSuppressed(false)
, m_inUpdateScrollbars(false)
, m_shouldDrawPanScrollIcon(false)
, m_clipsRepaints(true)
{
ASSERT(m_frame);
init();
if (!m_frame->isMainFrame())
return;
ScrollableArea::setVerticalScrollElasticity(ScrollElasticityAllowed);
ScrollableArea::setHorizontalScrollElasticity(ScrollElasticityAllowed);
}
PassRefPtrWillBeRawPtr<FrameView> FrameView::create(LocalFrame* frame)
{
RefPtrWillBeRawPtr<FrameView> view = adoptRefWillBeNoop(new FrameView(frame));
view->show();
return view.release();
}
PassRefPtrWillBeRawPtr<FrameView> FrameView::create(LocalFrame* frame, const IntSize& initialSize)
{
RefPtrWillBeRawPtr<FrameView> view = adoptRefWillBeNoop(new FrameView(frame));
view->Widget::setFrameRect(IntRect(view->location(), initialSize));
view->setLayoutSizeInternal(initialSize);
view->show();
return view.release();
}
FrameView::~FrameView()
{
#if ENABLE(OILPAN)
ASSERT(m_hasBeenDisposed);
#else
// Verify that the LocalFrame has a different FrameView or
// that it is being detached and destructed.
ASSERT(frame().view() != this || !renderView());
dispose();
#endif
}
void FrameView::dispose()
{
if (m_postLayoutTasksTimer.isActive())
m_postLayoutTasksTimer.stop();
if (m_didScrollTimer.isActive())
m_didScrollTimer.stop();
removeFromAXObjectCache();
// Custom scrollbars should already be destroyed at this point
ASSERT(!horizontalScrollbar() || !horizontalScrollbar()->isCustomScrollbar());
ASSERT(!verticalScrollbar() || !verticalScrollbar()->isCustomScrollbar());
setHasHorizontalScrollbar(false); // Remove native scrollbars now before we lose the connection to the HostWindow.
setHasVerticalScrollbar(false);
ASSERT(!m_scrollCorner);
// FIXME: Do we need to do something here for OOPI?
HTMLFrameOwnerElement* ownerElement = m_frame->deprecatedLocalOwner();
if (ownerElement && ownerElement->ownedWidget() == this)
ownerElement->setWidget(nullptr);
disposeAutoSizeInfo();
#if ENABLE(OILPAN) && ENABLE(ASSERT)
m_hasBeenDisposed = true;
#endif
}
void FrameView::trace(Visitor* visitor)
{
#if ENABLE(OILPAN)
visitor->trace(m_partUpdateSet);
visitor->trace(m_parts);
visitor->trace(m_frame);
visitor->trace(m_nodeToDraw);
visitor->trace(m_maintainScrollPositionAnchor);
visitor->trace(m_scrollCorner);
visitor->trace(m_autoSizeInfo);
visitor->trace(m_horizontalScrollbar);
visitor->trace(m_verticalScrollbar);
visitor->trace(m_children);
#endif
Widget::trace(visitor);
}
void FrameView::reset()
{
m_hasPendingLayout = false;
m_layoutSubtreeRoot = 0;
m_doFullPaintInvalidation = false;
m_layoutSchedulingEnabled = true;
m_inPerformLayout = false;
m_canInvalidatePaintDuringPerformLayout = false;
m_inSynchronousPostLayout = false;
m_layoutCount = 0;
m_nestedLayoutCount = 0;
m_postLayoutTasksTimer.stop();
m_updateWidgetsTimer.stop();
m_firstLayout = true;
m_firstLayoutCallbackPending = false;
m_wasScrolledByUser = false;
m_safeToPropagateScrollToParent = true;
m_lastViewportSize = IntSize();
m_lastZoomFactor = 1.0f;
m_isTrackingPaintInvalidations = false;
m_trackedPaintInvalidationRects.clear();
m_lastPaintTime = 0;
m_paintBehavior = PaintBehaviorNormal;
m_isPainting = false;
m_visuallyNonEmptyCharacterCount = 0;
m_visuallyNonEmptyPixelCount = 0;
m_isVisuallyNonEmpty = false;
m_firstVisuallyNonEmptyLayoutCallbackPending = true;
m_maintainScrollPositionAnchor = nullptr;
m_viewportConstrainedObjects.clear();
}
void FrameView::removeFromAXObjectCache()
{
if (AXObjectCache* cache = axObjectCache()) {
cache->remove(this);
cache->childrenChanged(m_frame->pagePopupOwner());
}
}
void FrameView::init()
{
reset();
m_size = LayoutSize();
// Propagate the marginwidth/height and scrolling modes to the view.
// FIXME: Do we need to do this for OOPI?
Element* ownerElement = m_frame->deprecatedLocalOwner();
if (ownerElement && (isHTMLFrameElement(*ownerElement) || isHTMLIFrameElement(*ownerElement))) {
HTMLFrameElementBase* frameElt = toHTMLFrameElementBase(ownerElement);
if (frameElt->scrollingMode() == ScrollbarAlwaysOff)
setCanHaveScrollbars(false);
}
}
void FrameView::prepareForDetach()
{
RELEASE_ASSERT(!isInPerformLayout());
if (ScrollAnimator* scrollAnimator = existingScrollAnimator())
scrollAnimator->cancelAnimations();
cancelProgrammaticScrollAnimation();
detachCustomScrollbars();
// When the view is no longer associated with a frame, it needs to be removed from the ax object cache
// right now, otherwise it won't be able to reach the topDocument()'s axObject cache later.
removeFromAXObjectCache();
if (m_frame->page()) {
if (ScrollingCoordinator* scrollingCoordinator = m_frame->page()->scrollingCoordinator())
scrollingCoordinator->willDestroyScrollableArea(this);
}
#if ENABLE(OILPAN)
// FIXME: once/if dust settles, do this always (non-Oilpan)?
//
// FIXME: Oilpan: is this safe to dispose() if there are FrameView protections on the stack?
dispose();
#endif
}
void FrameView::detachCustomScrollbars()
{
Scrollbar* horizontalBar = horizontalScrollbar();
if (horizontalBar && horizontalBar->isCustomScrollbar())
setHasHorizontalScrollbar(false);
Scrollbar* verticalBar = verticalScrollbar();
if (verticalBar && verticalBar->isCustomScrollbar())
setHasVerticalScrollbar(false);
if (m_scrollCorner) {
m_scrollCorner->destroy();
m_scrollCorner = nullptr;
}
}
void FrameView::recalculateCustomScrollbarStyle()
{
bool didStyleChange = false;
if (m_horizontalScrollbar && m_horizontalScrollbar->isCustomScrollbar()) {
m_horizontalScrollbar->styleChanged();
didStyleChange = true;
}
if (m_verticalScrollbar && m_verticalScrollbar->isCustomScrollbar()) {
m_verticalScrollbar->styleChanged();
didStyleChange = true;
}
if (didStyleChange) {
updateScrollbarGeometry();
updateScrollCorner();
positionScrollbarLayers();
}
}
void FrameView::recalculateScrollbarOverlayStyle()
{
ScrollbarOverlayStyle oldOverlayStyle = scrollbarOverlayStyle();
ScrollbarOverlayStyle overlayStyle = ScrollbarOverlayStyleDefault;
Color backgroundColor = documentBackgroundColor();
// Reduce the background color from RGB to a lightness value
// and determine which scrollbar style to use based on a lightness
// heuristic.
double hue, saturation, lightness;
backgroundColor.getHSL(hue, saturation, lightness);
if (lightness <= .5)
overlayStyle = ScrollbarOverlayStyleLight;
if (oldOverlayStyle != overlayStyle)
setScrollbarOverlayStyle(overlayStyle);
}
void FrameView::clear()
{
reset();
setScrollbarsSuppressed(true);
}
bool FrameView::didFirstLayout() const
{
return !m_firstLayout;
}
void FrameView::invalidateRect(const IntRect& rect)
{
// For querying RenderLayer::compositingState() when invalidating scrollbars.
// FIXME: do all scrollbar invalidations after layout of all frames is complete. It's currently not recursively true.
DisableCompositingQueryAsserts disabler;
if (!parent()) {
if (HostWindow* window = hostWindow())
window->invalidateContentsAndRootView(rect);
return;
}
RenderPart* renderer = m_frame->ownerRenderer();
if (!renderer)
return;
IntRect paintInvalidationRect = rect;
paintInvalidationRect.move(renderer->borderLeft() + renderer->paddingLeft(),
renderer->borderTop() + renderer->paddingTop());
renderer->invalidatePaintRectangle(paintInvalidationRect);
}
void FrameView::setFrameRect(const IntRect& newRect)
{
IntRect oldRect = frameRect();
if (newRect == oldRect)
return;
// Autosized font sizes depend on the width of the viewing area.
bool autosizerNeedsUpdating = false;
if (newRect.width() != oldRect.width() && m_frame->isMainFrame() && m_frame->settings()->textAutosizingEnabled())
autosizerNeedsUpdating = true;
Widget::setFrameRect(newRect);
updateScrollbars(scrollOffsetDouble());
frameRectsChanged();
updateScrollableAreaSet();
if (autosizerNeedsUpdating) {
// This needs to be after the call to Widget::setFrameRect, because it reads the new width.
if (TextAutosizer* textAutosizer = m_frame->document()->textAutosizer())
textAutosizer->updatePageInfoInAllFrames();
}
if (RenderView* renderView = this->renderView()) {
if (renderView->usesCompositing())
renderView->compositor()->frameViewDidChangeSize();
}
viewportConstrainedVisibleContentSizeChanged(newRect.width() != oldRect.width(), newRect.height() != oldRect.height());
if (oldRect.size() != newRect.size()
&& m_frame->isMainFrame()
&& m_frame->settings()->pinchVirtualViewportEnabled())
page()->frameHost().pinchViewport().mainFrameDidChangeSize();
}
Page* FrameView::page() const
{
return frame().page();
}
RenderView* FrameView::renderView() const
{
return frame().contentRenderer();
}
void FrameView::setCanHaveScrollbars(bool canHaveScrollbars)
{
m_canHaveScrollbars = canHaveScrollbars;
ScrollbarMode newHorizontalMode;
ScrollbarMode newVerticalMode;
scrollbarModes(newHorizontalMode, newVerticalMode);
if (canHaveScrollbars && newVerticalMode == ScrollbarAlwaysOff)
newVerticalMode = ScrollbarAuto;
else if (!canHaveScrollbars)
newVerticalMode = ScrollbarAlwaysOff;
if (canHaveScrollbars && newHorizontalMode == ScrollbarAlwaysOff)
newHorizontalMode = ScrollbarAuto;
else if (!canHaveScrollbars)
newHorizontalMode = ScrollbarAlwaysOff;
setScrollbarModes(newHorizontalMode, newVerticalMode);
}
bool FrameView::shouldUseCustomScrollbars(Element*& customScrollbarElement, LocalFrame*& customScrollbarFrame)
{
customScrollbarElement = 0;
customScrollbarFrame = 0;
if (Settings* settings = m_frame->settings()) {
if (!settings->allowCustomScrollbarInMainFrame() && m_frame->isMainFrame())
return false;
}
// FIXME: We need to update the scrollbar dynamically as documents change (or as doc elements and bodies get discovered that have custom styles).
Document* doc = m_frame->document();
// Try the <body> element first as a scrollbar source.
Element* body = doc ? doc->body() : 0;
if (body && body->renderer() && body->renderer()->style()->hasPseudoStyle(SCROLLBAR)) {
customScrollbarElement = body;
return true;
}
// If the <body> didn't have a custom style, then the root element might.
Element* docElement = doc ? doc->documentElement() : 0;
if (docElement && docElement->renderer() && docElement->renderer()->style()->hasPseudoStyle(SCROLLBAR)) {
customScrollbarElement = docElement;
return true;
}
// If we have an owning ipage/LocalFrame element, then it can set the custom scrollbar also.
RenderPart* frameRenderer = m_frame->ownerRenderer();
if (frameRenderer && frameRenderer->style()->hasPseudoStyle(SCROLLBAR)) {
customScrollbarFrame = m_frame.get();
return true;
}
return false;
}
PassRefPtrWillBeRawPtr<Scrollbar> FrameView::createScrollbar(ScrollbarOrientation orientation)
{
Element* customScrollbarElement = 0;
LocalFrame* customScrollbarFrame = 0;
if (shouldUseCustomScrollbars(customScrollbarElement, customScrollbarFrame))
return RenderScrollbar::createCustomScrollbar(this, orientation, customScrollbarElement, customScrollbarFrame);
// Nobody set a custom style, so we just use a native scrollbar.
return Scrollbar::create(this, orientation, RegularScrollbar);
}
void FrameView::setContentsSize(const IntSize& size)
{
if (size == contentsSize())
return;
m_contentsSize = size;
updateScrollbars(scrollOffsetDouble());
updateOverhangAreas();
ScrollableArea::contentsResized();
Page* page = frame().page();
if (!page)
return;
updateScrollableAreaSet();
page->chrome().contentsSizeChanged(m_frame.get(), size);
}
IntPoint FrameView::clampOffsetAtScale(const IntPoint& offset, float scale) const
{
IntPoint maxScrollExtent(contentsSize().width() - scrollOrigin().x(), contentsSize().height() - scrollOrigin().y());
FloatSize scaledSize = unscaledVisibleContentSize();
if (scale)
scaledSize.scale(1 / scale);
IntPoint clampedOffset = offset;
clampedOffset = clampedOffset.shrunkTo(maxScrollExtent - expandedIntSize(scaledSize));
clampedOffset = clampedOffset.expandedTo(-scrollOrigin());
return clampedOffset;
}
void FrameView::adjustViewSize()
{
RenderView* renderView = this->renderView();
if (!renderView)
return;
ASSERT(m_frame->view() == this);
const IntRect rect = renderView->documentRect();
const IntSize& size = rect.size();
setScrollOrigin(IntPoint(-rect.x(), -rect.y()), !m_frame->document()->printing(), size == contentsSize());
setContentsSize(size);
}
void FrameView::applyOverflowToViewportAndSetRenderer(RenderObject* o, ScrollbarMode& hMode, ScrollbarMode& vMode)
{
// Handle the overflow:hidden/scroll case for the body/html elements. WinIE treats
// overflow:hidden and overflow:scroll on <body> as applying to the document's
// scrollbars. The CSS2.1 draft states that HTML UAs should use the <html> or <body> element and XML/XHTML UAs should
// use the root element.
EOverflow overflowX = o->style()->overflowX();
EOverflow overflowY = o->style()->overflowY();
if (o->isSVGRoot()) {
// Don't allow overflow to affect <img> and css backgrounds
if (toRenderSVGRoot(o)->isEmbeddedThroughSVGImage())
return;
// FIXME: evaluate if we can allow overflow for these cases too.
// Overflow is always hidden when stand-alone SVG documents are embedded.
if (toRenderSVGRoot(o)->isEmbeddedThroughFrameContainingSVGDocument()) {
overflowX = OHIDDEN;
overflowY = OHIDDEN;
}
}
bool ignoreOverflowHidden = false;
if (m_frame->settings()->ignoreMainFrameOverflowHiddenQuirk() && m_frame->isMainFrame())
ignoreOverflowHidden = true;
switch (overflowX) {
case OHIDDEN:
if (!ignoreOverflowHidden)
hMode = ScrollbarAlwaysOff;
break;
case OSCROLL:
hMode = ScrollbarAlwaysOn;
break;
case OAUTO:
hMode = ScrollbarAuto;
break;
default:
// Don't set it at all.
;
}
switch (overflowY) {
case OHIDDEN:
if (!ignoreOverflowHidden)
vMode = ScrollbarAlwaysOff;
break;
case OSCROLL:
vMode = ScrollbarAlwaysOn;
break;
case OAUTO:
vMode = ScrollbarAuto;
break;
default:
// Don't set it at all.
;
}
m_viewportRenderer = o;
}
void FrameView::calculateScrollbarModesForLayoutAndSetViewportRenderer(ScrollbarMode& hMode, ScrollbarMode& vMode, ScrollbarModesCalculationStrategy strategy)
{
m_viewportRenderer = 0;
// FIXME: How do we handle this for OOPI?
const HTMLFrameOwnerElement* owner = m_frame->deprecatedLocalOwner();
if (owner && (owner->scrollingMode() == ScrollbarAlwaysOff)) {
hMode = ScrollbarAlwaysOff;
vMode = ScrollbarAlwaysOff;
return;
}
if (m_canHaveScrollbars || strategy == RulesFromWebContentOnly) {
hMode = ScrollbarAuto;
vMode = ScrollbarAuto;
} else {
hMode = ScrollbarAlwaysOff;
vMode = ScrollbarAlwaysOff;
}
if (!isSubtreeLayout()) {
Document* document = m_frame->document();
Node* body = document->body();
if (isHTMLFrameSetElement(body) && body->renderer()) {
vMode = ScrollbarAlwaysOff;
hMode = ScrollbarAlwaysOff;
} else if (Element* viewportElement = document->viewportDefiningElement()) {
if (RenderObject* viewportRenderer = viewportElement->renderer()) {
if (viewportRenderer->style())
applyOverflowToViewportAndSetRenderer(viewportRenderer, hMode, vMode);
}
}
}
}
void FrameView::updateAcceleratedCompositingSettings()
{
if (RenderView* renderView = this->renderView())
renderView->compositor()->updateAcceleratedCompositingSettings();
}
void FrameView::recalcOverflowAfterStyleChange()
{
RenderView* renderView = this->renderView();
RELEASE_ASSERT(renderView);
if (!renderView->needsOverflowRecalcAfterStyleChange())
return;
renderView->recalcOverflowAfterStyleChange();
IntRect documentRect = renderView->documentRect();
if (scrollOrigin() == -documentRect.location() && contentsSize() == documentRect.size())
return;
if (needsLayout())
return;
InUpdateScrollbarsScope inUpdateScrollbarsScope(this);
bool shouldHaveHorizontalScrollbar = false;
bool shouldHaveVerticalScrollbar = false;
computeScrollbarExistence(shouldHaveHorizontalScrollbar, shouldHaveVerticalScrollbar, documentRect.size());
bool hasHorizontalScrollbar = horizontalScrollbar();
bool hasVerticalScrollbar = verticalScrollbar();
if (hasHorizontalScrollbar != shouldHaveHorizontalScrollbar
|| hasVerticalScrollbar != shouldHaveVerticalScrollbar) {
setNeedsLayout();
return;
}
adjustViewSize();
updateScrollbarGeometry();
}
bool FrameView::usesCompositedScrolling() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return false;
if (m_frame->settings() && m_frame->settings()->preferCompositingToLCDTextEnabled())
return renderView->compositor()->inCompositingMode();
return false;
}
GraphicsLayer* FrameView::layerForScrolling() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return 0;
return renderView->compositor()->scrollLayer();
}
GraphicsLayer* FrameView::layerForHorizontalScrollbar() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return 0;
return renderView->compositor()->layerForHorizontalScrollbar();
}
GraphicsLayer* FrameView::layerForVerticalScrollbar() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return 0;
return renderView->compositor()->layerForVerticalScrollbar();
}
GraphicsLayer* FrameView::layerForScrollCorner() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return 0;
return renderView->compositor()->layerForScrollCorner();
}
bool FrameView::isEnclosedInCompositingLayer() const
{
// FIXME: It's a bug that compositing state isn't always up to date when this is called. crbug.com/366314
DisableCompositingQueryAsserts disabler;
RenderObject* frameOwnerRenderer = m_frame->ownerRenderer();
return frameOwnerRenderer && frameOwnerRenderer->enclosingLayer()->enclosingLayerForPaintInvalidationCrossingFrameBoundaries();
}
RenderObject* FrameView::layoutRoot(bool onlyDuringLayout) const
{
return onlyDuringLayout && layoutPending() ? 0 : m_layoutSubtreeRoot;
}
inline void FrameView::forceLayoutParentViewIfNeeded()
{
RenderPart* ownerRenderer = m_frame->ownerRenderer();
if (!ownerRenderer || !ownerRenderer->frame())
return;
RenderBox* contentBox = embeddedContentBox();
if (!contentBox)
return;
RenderSVGRoot* svgRoot = toRenderSVGRoot(contentBox);
if (svgRoot->everHadLayout() && !svgRoot->needsLayout())
return;
// If the embedded SVG document appears the first time, the ownerRenderer has already finished
// layout without knowing about the existence of the embedded SVG document, because RenderReplaced
// embeddedContentBox() returns 0, as long as the embedded document isn't loaded yet. Before
// bothering to lay out the SVG document, mark the ownerRenderer needing layout and ask its
// FrameView for a layout. After that the RenderEmbeddedObject (ownerRenderer) carries the
// correct size, which RenderSVGRoot::computeReplacedLogicalWidth/Height rely on, when laying
// out for the first time, or when the RenderSVGRoot size has changed dynamically (eg. via <script>).
RefPtrWillBeRawPtr<FrameView> frameView = ownerRenderer->frame()->view();
// Mark the owner renderer as needing layout.
ownerRenderer->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
// Synchronously enter layout, to layout the view containing the host object/embed/iframe.
ASSERT(frameView);
frameView->layout();
}
void FrameView::performPreLayoutTasks()
{
TRACE_EVENT0("blink", "FrameView::performPreLayoutTasks");
lifecycle().advanceTo(DocumentLifecycle::InPreLayout);
// Don't schedule more layouts, we're in one.
TemporaryChange<bool> changeSchedulingEnabled(m_layoutSchedulingEnabled, false);
if (!m_nestedLayoutCount && !m_inSynchronousPostLayout && m_postLayoutTasksTimer.isActive()) {
// This is a new top-level layout. If there are any remaining tasks from the previous layout, finish them now.
m_inSynchronousPostLayout = true;
performPostLayoutTasks();
m_inSynchronousPostLayout = false;
}
Document* document = m_frame->document();
if (wasViewportResized())
document->notifyResizeForViewportUnits();
// Viewport-dependent media queries may cause us to need completely different style information.
if (!document->styleResolver() || document->styleResolver()->mediaQueryAffectedByViewportChange()) {
document->styleResolverChanged();
document->mediaQueryAffectingValueChanged();
// FIXME: This instrumentation event is not strictly accurate since cached media query results
// do not persist across StyleResolver rebuilds.
InspectorInstrumentation::mediaQueryResultChanged(document);
} else {
document->evaluateMediaQueryList();
}
document->updateRenderTreeIfNeeded();
lifecycle().advanceTo(DocumentLifecycle::StyleClean);
}
void FrameView::performLayout(RenderObject* rootForThisLayout, bool inSubtreeLayout)
{
TRACE_EVENT0("blink", "FrameView::performLayout");
ScriptForbiddenScope forbidScript;
ASSERT(!isInPerformLayout());
lifecycle().advanceTo(DocumentLifecycle::InPerformLayout);
TemporaryChange<bool> changeInPerformLayout(m_inPerformLayout, true);
// performLayout is the actual guts of layout().
// FIXME: The 300 other lines in layout() probably belong in other helper functions
// so that a single human could understand what layout() is actually doing.
LayoutState layoutState(*rootForThisLayout);
forceLayoutParentViewIfNeeded();
// FIXME (crbug.com/256657): Do not do two layouts for text autosizing.
rootForThisLayout->layout();
gatherDebugLayoutRects(rootForThisLayout);
ResourceLoadPriorityOptimizer::resourceLoadPriorityOptimizer()->updateAllImageResourcePriorities();
lifecycle().advanceTo(DocumentLifecycle::AfterPerformLayout);
}
void FrameView::scheduleOrPerformPostLayoutTasks()
{
if (m_postLayoutTasksTimer.isActive())
return;
if (!m_inSynchronousPostLayout) {
m_inSynchronousPostLayout = true;
// Calls resumeScheduledEvents()
performPostLayoutTasks();
m_inSynchronousPostLayout = false;
}
if (!m_postLayoutTasksTimer.isActive() && (needsLayout() || m_inSynchronousPostLayout)) {
// If we need layout or are already in a synchronous call to postLayoutTasks(),
// defer widget updates and event dispatch until after we return. postLayoutTasks()
// can make us need to update again, and we can get stuck in a nasty cycle unless
// we call it through the timer here.
m_postLayoutTasksTimer.startOneShot(0, FROM_HERE);
if (needsLayout())
layout();
}
}
void FrameView::layout(bool allowSubtree)
{
// We should never layout a Document which is not in a LocalFrame.
ASSERT(m_frame);
ASSERT(m_frame->view() == this);
ASSERT(m_frame->page());
ScriptForbiddenScope forbidScript;
if (isInPerformLayout() || !m_frame->document()->isActive())
return;
TRACE_EVENT0("blink", "FrameView::layout");
TRACE_EVENT_SCOPED_SAMPLING_STATE("blink", "Layout");
// Protect the view from being deleted during layout (in recalcStyle)
RefPtrWillBeRawPtr<FrameView> protector(this);
// Every scroll that happens during layout is programmatic.
TemporaryChange<bool> changeInProgrammaticScroll(m_inProgrammaticScroll, true);
if (m_autoSizeInfo)
m_autoSizeInfo->autoSizeIfNeeded();
m_hasPendingLayout = false;
DocumentLifecycle::Scope lifecycleScope(lifecycle(), DocumentLifecycle::LayoutClean);
RELEASE_ASSERT(!isPainting());
TRACE_EVENT_BEGIN1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "Layout", "beginData", InspectorLayoutEvent::beginData(this));
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", "stack", InspectorCallStackEvent::currentCallStack());
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willLayout(m_frame.get());
if (!allowSubtree && isSubtreeLayout()) {
m_layoutSubtreeRoot->markContainingBlocksForLayout(false);
m_layoutSubtreeRoot = 0;
}
performPreLayoutTasks();
#if !ENABLE(OILPAN)
// If there is only one ref to this view left, then its going to be destroyed as soon as we exit,
// so there's no point to continuing to layout
if (protector->hasOneRef())
return;
#endif
Document* document = m_frame->document();
bool inSubtreeLayout = isSubtreeLayout();
RenderObject* rootForThisLayout = inSubtreeLayout ? m_layoutSubtreeRoot : document->renderView();
if (!rootForThisLayout) {
// FIXME: Do we need to set m_size here?
ASSERT_NOT_REACHED();
return;
}
FontCachePurgePreventer fontCachePurgePreventer;
RenderLayer* layer;
{
TemporaryChange<bool> changeSchedulingEnabled(m_layoutSchedulingEnabled, false);
m_nestedLayoutCount++;
if (!inSubtreeLayout) {
Document* document = m_frame->document();
Node* body = document->body();
if (body && body->renderer()) {
if (isHTMLFrameSetElement(*body)) {
body->renderer()->setChildNeedsLayout();
} else if (isHTMLBodyElement(*body)) {
if (!m_firstLayout && m_size.height() != layoutSize().height() && body->renderer()->enclosingBox()->stretchesToViewport())
body->renderer()->setChildNeedsLayout();
}
}
}
updateCounters();
ScrollbarMode hMode;
ScrollbarMode vMode;
calculateScrollbarModesForLayoutAndSetViewportRenderer(hMode, vMode);
if (!inSubtreeLayout) {
// Now set our scrollbar state for the layout.
ScrollbarMode currentHMode = horizontalScrollbarMode();
ScrollbarMode currentVMode = verticalScrollbarMode();
if (m_firstLayout) {
setScrollbarsSuppressed(true);
m_doFullPaintInvalidation = true;
m_firstLayout = false;
m_firstLayoutCallbackPending = true;
m_lastViewportSize = layoutSize(IncludeScrollbars);
m_lastZoomFactor = rootForThisLayout->style()->zoom();
// Set the initial vMode to AlwaysOn if we're auto.
if (vMode == ScrollbarAuto)
setVerticalScrollbarMode(ScrollbarAlwaysOn); // This causes a vertical scrollbar to appear.
// Set the initial hMode to AlwaysOff if we're auto.
if (hMode == ScrollbarAuto)
setHorizontalScrollbarMode(ScrollbarAlwaysOff); // This causes a horizontal scrollbar to disappear.
setScrollbarModes(hMode, vMode);
setScrollbarsSuppressed(false, true);
} else if (hMode != currentHMode || vMode != currentVMode) {
setScrollbarModes(hMode, vMode);
}
LayoutSize oldSize = m_size;
m_size = LayoutSize(layoutSize().width(), layoutSize().height());
if (oldSize != m_size && !m_firstLayout) {
RenderBox* rootRenderer = document->documentElement() ? document->documentElement()->renderBox() : 0;
RenderBox* bodyRenderer = rootRenderer && document->body() ? document->body()->renderBox() : 0;
if (bodyRenderer && bodyRenderer->stretchesToViewport())
bodyRenderer->setChildNeedsLayout();
else if (rootRenderer && rootRenderer->stretchesToViewport())
rootRenderer->setChildNeedsLayout();
}
// We need to set m_doFullPaintInvalidation before triggering layout as RenderObject::checkForPaintInvalidation
// checks the boolean to disable local paint invalidations.
m_doFullPaintInvalidation |= renderView()->shouldDoFullPaintInvalidationForNextLayout();
}
layer = rootForThisLayout->enclosingLayer();
performLayout(rootForThisLayout, inSubtreeLayout);
m_layoutSubtreeRoot = 0;
// We need to ensure that we mark up all renderers up to the RenderView
// for paint invalidation. This simplifies our code as we just always
// do a full tree walk.
if (RenderObject* container = rootForThisLayout->container())
container->setMayNeedPaintInvalidation(true);
} // Reset m_layoutSchedulingEnabled to its previous value.
if (!inSubtreeLayout && !toRenderView(rootForThisLayout)->document().printing())
adjustViewSize();
layer->updateLayerPositionsAfterLayout();
renderView()->compositor()->didLayout();
m_layoutCount++;
if (AXObjectCache* cache = rootForThisLayout->document().axObjectCache()) {
const KURL& url = rootForThisLayout->document().url();
if (url.isValid() && !url.isAboutBlankURL())
cache->handleLayoutComplete(rootForThisLayout);
}
updateAnnotatedRegions();
ASSERT(!rootForThisLayout->needsLayout());
if (document->hasListenerType(Document::OVERFLOWCHANGED_LISTENER))
updateOverflowStatus(layoutSize().width() < contentsWidth(), layoutSize().height() < contentsHeight());
scheduleOrPerformPostLayoutTasks();
TRACE_EVENT_END1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "Layout", "endData", InspectorLayoutEvent::endData(rootForThisLayout));
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentation::didLayout(cookie, rootForThisLayout);
m_nestedLayoutCount--;
if (m_nestedLayoutCount)
return;
#if ENABLE(ASSERT)
// Post-layout assert that nobody was re-marked as needing layout during layout.
document->renderView()->assertSubtreeIsLaidOut();
#endif
// FIXME: It should be not possible to remove the FrameView from the frame/page during layout
// however m_inPerformLayout is not set for most of this function, so none of our RELEASE_ASSERTS
// in LocalFrame/Page will fire. One of the post-layout tasks is disconnecting the LocalFrame from
// the page in fast/frames/crash-remove-iframe-during-object-beforeload-2.html
// necessitating this check here.
// ASSERT(frame()->page());
if (frame().page())
frame().page()->chrome().client().layoutUpdated(m_frame.get());
}
// The plan is to move to compositor-queried paint invalidation, in which case this
// method would setNeedsRedraw on the GraphicsLayers with invalidations and
// let the compositor pick which to actually draw.
// See http://crbug.com/306706
void FrameView::invalidateTreeIfNeeded()
{
ASSERT(renderView());
RenderView& rootForPaintInvalidation = *renderView();
ASSERT(!rootForPaintInvalidation.needsLayout());
TRACE_EVENT1("blink", "FrameView::invalidateTree", "root", rootForPaintInvalidation.debugName().ascii());
PaintInvalidationState rootPaintInvalidationState(rootForPaintInvalidation);
if (m_doFullPaintInvalidation)
renderView()->compositor()->fullyInvalidatePaint();
rootForPaintInvalidation.invalidateTreeIfNeeded(rootPaintInvalidationState);
// Invalidate the paint of the frameviews scrollbars if needed
if (hasVerticalBarDamage())
invalidateRect(verticalBarDamage());
if (hasHorizontalBarDamage())
invalidateRect(horizontalBarDamage());
resetScrollbarDamage();
#ifndef NDEBUG
renderView()->assertSubtreeClearedPaintInvalidationState();
#endif
if (m_frame->selection().isCaretBoundsDirty())
m_frame->selection().invalidateCaretRect();
}
DocumentLifecycle& FrameView::lifecycle() const
{
return m_frame->document()->lifecycle();
}
void FrameView::gatherDebugLayoutRects(RenderObject* layoutRoot)
{
bool isTracing;
TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), &isTracing);
if (!isTracing)
return;
if (!layoutRoot->enclosingLayer()->hasCompositedLayerMapping())
return;
// For access to compositedLayerMapping().
DisableCompositingQueryAsserts disabler;
GraphicsLayer* graphicsLayer = layoutRoot->enclosingLayer()->compositedLayerMapping()->mainGraphicsLayer();
if (!graphicsLayer)
return;
GraphicsLayerDebugInfo& debugInfo = graphicsLayer->debugInfo();
debugInfo.currentLayoutRects().clear();
for (RenderObject* renderer = layoutRoot; renderer; renderer = renderer->nextInPreOrder()) {
if (renderer->layoutDidGetCalledSinceLastFrame()) {
FloatQuad quad = renderer->localToAbsoluteQuad(FloatQuad(renderer->previousPaintInvalidationRect()));
LayoutRect rect = quad.enclosingBoundingBox();
debugInfo.currentLayoutRects().append(rect);
}
}
}
RenderBox* FrameView::embeddedContentBox() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return 0;
RenderObject* firstChild = renderView->firstChild();
if (!firstChild || !firstChild->isBox())
return 0;
// Curently only embedded SVG documents participate in the size-negotiation logic.
if (firstChild->isSVGRoot())
return toRenderBox(firstChild);
return 0;
}
void FrameView::addPart(RenderPart* object)
{
m_parts.add(object);
}
void FrameView::removePart(RenderPart* object)
{
m_parts.remove(object);
}
void FrameView::updateWidgetPositions()
{
WillBeHeapVector<RefPtrWillBeMember<RenderPart> > parts;
copyToVector(m_parts, parts);
// Script or plugins could detach the frame so abort processing if that happens.
for (size_t i = 0; i < parts.size() && renderView(); ++i)
parts[i]->updateWidgetPosition();
for (size_t i = 0; i < parts.size() && renderView(); ++i)
parts[i]->widgetPositionsUpdated();
}
void FrameView::addPartToUpdate(RenderEmbeddedObject& object)
{
ASSERT(isInPerformLayout());
// Tell the DOM element that it needs a widget update.
Node* node = object.node();
ASSERT(node);
if (isHTMLObjectElement(*node) || isHTMLEmbedElement(*node))
toHTMLPlugInElement(node)->setNeedsWidgetUpdate(true);
m_partUpdateSet.add(&object);
}
void FrameView::setMediaType(const AtomicString& mediaType)
{
ASSERT(m_frame->document());
m_frame->document()->mediaQueryAffectingValueChanged();
m_mediaType = mediaType;
}
AtomicString FrameView::mediaType() const
{
// See if we have an override type.
String overrideType;
InspectorInstrumentation::applyEmulatedMedia(m_frame.get(), &overrideType);
if (!overrideType.isNull())
return AtomicString(overrideType);
return m_mediaType;
}
void FrameView::adjustMediaTypeForPrinting(bool printing)
{
if (printing) {
if (m_mediaTypeWhenNotPrinting.isNull())
m_mediaTypeWhenNotPrinting = mediaType();
setMediaType(MediaTypeNames::print);
} else {
if (!m_mediaTypeWhenNotPrinting.isNull())
setMediaType(m_mediaTypeWhenNotPrinting);
m_mediaTypeWhenNotPrinting = nullAtom;
}
}
bool FrameView::contentsInCompositedLayer() const
{
RenderView* renderView = this->renderView();
if (renderView && renderView->compositingState() == PaintsIntoOwnBacking) {
GraphicsLayer* layer = renderView->layer()->compositedLayerMapping()->mainGraphicsLayer();
if (layer && layer->drawsContent())
return true;
}
return false;
}
void FrameView::addSlowRepaintObject()
{
if (!m_slowRepaintObjectCount++) {
if (Page* page = m_frame->page()) {
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->frameViewHasSlowRepaintObjectsDidChange(this);
}
}
}
void FrameView::removeSlowRepaintObject()
{
ASSERT(m_slowRepaintObjectCount > 0);
m_slowRepaintObjectCount--;
if (!m_slowRepaintObjectCount) {
if (Page* page = m_frame->page()) {
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->frameViewHasSlowRepaintObjectsDidChange(this);
}
}
}
void FrameView::addViewportConstrainedObject(RenderObject* object)
{
if (!m_viewportConstrainedObjects)
m_viewportConstrainedObjects = adoptPtr(new ViewportConstrainedObjectSet);
if (!m_viewportConstrainedObjects->contains(object)) {
m_viewportConstrainedObjects->add(object);
if (Page* page = m_frame->page()) {
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->frameViewFixedObjectsDidChange(this);
}
}
}
void FrameView::removeViewportConstrainedObject(RenderObject* object)
{
if (m_viewportConstrainedObjects && m_viewportConstrainedObjects->contains(object)) {
m_viewportConstrainedObjects->remove(object);
if (Page* page = m_frame->page()) {
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->frameViewFixedObjectsDidChange(this);
}
}
}
LayoutRect FrameView::viewportConstrainedVisibleContentRect() const
{
LayoutRect viewportRect = visibleContentRect();
// Ignore overhang. No-op when not using rubber banding.
viewportRect.setLocation(clampScrollPosition(scrollPosition()));
return viewportRect;
}
void FrameView::viewportConstrainedVisibleContentSizeChanged(bool widthChanged, bool heightChanged)
{
if (!hasViewportConstrainedObjects())
return;
// If viewport is not enabled, frameRect change will cause layout size change and then layout.
// Otherwise, viewport constrained objects need their layout flags set separately to ensure
// they are positioned correctly. In the virtual-viewport pinch mode frame rect changes wont
// necessarily cause a layout size change so only take this early-out if we're in old-style
// pinch.
if (m_frame->settings()
&& !m_frame->settings()->viewportEnabled()
&& !m_frame->settings()->pinchVirtualViewportEnabled())
return;
for (const auto& viewportConstrainedObject : *m_viewportConstrainedObjects) {
RenderObject* renderer = viewportConstrainedObject;
RenderStyle* style = renderer->style();
if (widthChanged) {
if (style->width().isFixed() && (style->left().isAuto() || style->right().isAuto()))
renderer->setNeedsPositionedMovementLayout();
else
renderer->setNeedsLayoutAndFullPaintInvalidation();
}
if (heightChanged) {
if (style->height().isFixed() && (style->top().isAuto() || style->bottom().isAuto()))
renderer->setNeedsPositionedMovementLayout();
else
renderer->setNeedsLayoutAndFullPaintInvalidation();
}
}
}
IntSize FrameView::scrollOffsetForFixedPosition() const
{
return toIntSize(clampScrollPosition(scrollPosition()));
}
IntPoint FrameView::lastKnownMousePosition() const
{
return m_frame->eventHandler().lastKnownMousePosition();
}
bool FrameView::shouldSetCursor() const
{
Page* page = frame().page();
return page && page->visibilityState() != PageVisibilityStateHidden && page->focusController().isActive() && page->settings().deviceSupportsMouse();
}
void FrameView::scrollContentsIfNeededRecursive()
{
scrollContentsIfNeeded();
for (Frame* child = m_frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
if (!child->isLocalFrame())
continue;
if (FrameView* view = toLocalFrame(child)->view())
view->scrollContentsIfNeededRecursive();
}
}
// FIXME: If we had a flag to force invalidations in a whole subtree, we could get rid of this function (crbug.com/410097).
static void setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants(const RenderLayer* layer)
{
layer->renderer()->setShouldDoFullPaintInvalidation();
for (RenderLayer* child = layer->firstChild(); child; child = child->nextSibling()) {
// Don't include paint invalidation rects for composited child layers; they will paint themselves and have a different origin.
if (child->isPaintInvalidationContainer())
continue;
setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants(child);
}
}
bool FrameView::scrollContentsFastPath(const IntSize& scrollDelta)
{
if (!contentsInCompositedLayer() || hasSlowRepaintObjects())
return false;
if (!m_viewportConstrainedObjects || m_viewportConstrainedObjects->isEmpty()) {
InspectorInstrumentation::didScroll(page());
return true;
}
for (const auto& viewportConstrainedObject : *m_viewportConstrainedObjects) {
RenderObject* renderer = viewportConstrainedObject;
ASSERT(renderer->style()->hasViewportConstrainedPosition());
ASSERT(renderer->hasLayer());
RenderLayer* layer = toRenderBoxModelObject(renderer)->layer();
if (layer->isPaintInvalidationContainer())
continue;
if (layer->subtreeIsInvisible())
continue;
// If the fixed layer has a blur/drop-shadow filter applied on at least one of its parents, we cannot
// scroll using the fast path, otherwise the outsets of the filter will be moved around the page.
if (layer->hasAncestorWithFilterOutsets())
return false;
setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants(layer);
}
InspectorInstrumentation::didScroll(page());
return true;
}
void FrameView::scrollContentsSlowPath(const IntRect& updateRect)
{
if (contentsInCompositedLayer()) {
IntRect updateRect = visibleContentRect();
ASSERT(renderView());
renderView()->invalidatePaintRectangle(updateRect);
}
if (RenderPart* frameRenderer = m_frame->ownerRenderer()) {
if (isEnclosedInCompositingLayer()) {
LayoutRect rect(frameRenderer->borderLeft() + frameRenderer->paddingLeft(),
frameRenderer->borderTop() + frameRenderer->paddingTop(),
visibleWidth(), visibleHeight());
frameRenderer->invalidatePaintRectangle(rect);
return;
}
}
hostWindow()->invalidateContentsForSlowScroll(updateRect);
}
void FrameView::restoreScrollbar()
{
setScrollbarsSuppressed(false);
}
bool FrameView::scrollToFragment(const KURL& url)
{
// If our URL has no ref, then we have no place we need to jump to.
// OTOH If CSS target was set previously, we want to set it to 0, recalc
// and possibly paint invalidation because :target pseudo class may have been
// set (see bug 11321).
if (!url.hasFragmentIdentifier() && !m_frame->document()->cssTarget())
return false;
String fragmentIdentifier = url.fragmentIdentifier();
if (scrollToAnchor(fragmentIdentifier))
return true;
// Try again after decoding the ref, based on the document's encoding.
if (m_frame->document()->encoding().isValid())
return scrollToAnchor(decodeURLEscapeSequences(fragmentIdentifier, m_frame->document()->encoding()));
return false;
}
bool FrameView::scrollToAnchor(const String& name)
{
ASSERT(m_frame->document());
if (!m_frame->document()->isRenderingReady()) {
m_frame->document()->setGotoAnchorNeededAfterStylesheetsLoad(true);
return false;
}
m_frame->document()->setGotoAnchorNeededAfterStylesheetsLoad(false);
Element* anchorNode = m_frame->document()->findAnchor(name);
// Setting to null will clear the current target.
m_frame->document()->setCSSTarget(anchorNode);
if (m_frame->document()->isSVGDocument()) {
if (SVGSVGElement* svg = SVGDocumentExtensions::rootElement(*m_frame->document())) {
svg->setupInitialView(name, anchorNode);
if (!anchorNode)
return true;
}
}
// Implement the rule that "" and "top" both mean top of page as in other browsers.
if (!anchorNode && !(name.isEmpty() || equalIgnoringCase(name, "top")))
return false;
maintainScrollPositionAtAnchor(anchorNode ? static_cast<Node*>(anchorNode) : m_frame->document());
// If the anchor accepts keyboard focus, move focus there to aid users relying on keyboard navigation.
// If anchorNode is not focusable, setFocusedElement() will still clear focus, which matches the behavior of other browsers.
if (anchorNode)
m_frame->document()->setFocusedElement(anchorNode);
return true;
}
void FrameView::maintainScrollPositionAtAnchor(Node* anchorNode)
{
m_maintainScrollPositionAnchor = anchorNode;
if (!m_maintainScrollPositionAnchor)
return;
// We need to update the layout before scrolling, otherwise we could
// really mess things up if an anchor scroll comes at a bad moment.
m_frame->document()->updateRenderTreeIfNeeded();
// Only do a layout if changes have occurred that make it necessary.
RenderView* renderView = this->renderView();
if (renderView && renderView->needsLayout())
layout();
else
scrollToAnchor();
}
void FrameView::scrollElementToRect(Element* element, const IntRect& rect)
{
// FIXME(http://crbug.com/371896) - This method shouldn't be manually doing
// coordinate transformations to the PinchViewport.
IntRect targetRect(rect);
m_frame->document()->updateLayoutIgnorePendingStylesheets();
bool pinchVirtualViewportEnabled = m_frame->settings()->pinchVirtualViewportEnabled();
if (pinchVirtualViewportEnabled) {
PinchViewport& pinchViewport = m_frame->page()->frameHost().pinchViewport();
IntSize pinchViewportSize = expandedIntSize(pinchViewport.visibleRect().size());
targetRect.moveBy(ceiledIntPoint(pinchViewport.visibleRect().location()));
targetRect.setSize(pinchViewportSize.shrunkTo(targetRect.size()));
}
LayoutRect bounds = element->boundingBox();
int centeringOffsetX = (targetRect.width() - bounds.width()) / 2;
int centeringOffsetY = (targetRect.height() - bounds.height()) / 2;
IntPoint targetOffset(
bounds.x() - centeringOffsetX - targetRect.x(),
bounds.y() - centeringOffsetY - targetRect.y());
setScrollPosition(DoublePoint(targetOffset));
if (pinchVirtualViewportEnabled) {
IntPoint remainder = IntPoint(targetOffset - scrollPosition());
m_frame->page()->frameHost().pinchViewport().move(remainder);
}
}
void FrameView::setScrollPosition(const DoublePoint& scrollPoint, ScrollBehavior scrollBehavior)
{
cancelProgrammaticScrollAnimation();
TemporaryChange<bool> changeInProgrammaticScroll(m_inProgrammaticScroll, true);
m_maintainScrollPositionAnchor = nullptr;
DoublePoint newScrollPosition = adjustScrollPositionWithinRange(scrollPoint);
if (newScrollPosition == scrollPositionDouble())
return;
if (scrollBehavior == ScrollBehaviorAuto) {
RenderObject* renderer = m_frame->document()->documentElement() ? m_frame->document()->documentElement()->renderer() : 0;
if (renderer)
scrollBehavior = renderer->style()->scrollBehavior();
else
scrollBehavior = ScrollBehaviorInstant;
}
if (scrollBehavior == ScrollBehaviorInstant) {
DoubleSize newOffset(newScrollPosition.x(), newScrollPosition.y());
updateScrollbars(newOffset);
} else {
programmaticallyScrollSmoothlyToOffset(toFloatPoint(newScrollPosition));
}
}
void FrameView::setScrollPositionNonProgrammatically(const IntPoint& scrollPoint)
{
IntPoint newScrollPosition = adjustScrollPositionWithinRange(scrollPoint);
if (newScrollPosition == scrollPosition())
return;
TemporaryChange<bool> changeInProgrammaticScroll(m_inProgrammaticScroll, false);
notifyScrollPositionChanged(newScrollPosition);
}
IntSize FrameView::layoutSize(IncludeScrollbarsInRect scrollbarInclusion) const
{
return scrollbarInclusion == ExcludeScrollbars ? excludeScrollbars(m_layoutSize) : m_layoutSize;
}
void FrameView::setLayoutSize(const IntSize& size)
{
ASSERT(!layoutSizeFixedToFrameSize());
setLayoutSizeInternal(size);
}
void FrameView::scrollPositionChanged()
{
setWasScrolledByUser(true);
Document* document = m_frame->document();
document->enqueueScrollEventForNode(document);
m_frame->eventHandler().dispatchFakeMouseMoveEventSoon();
if (RenderView* renderView = document->renderView()) {
if (renderView->usesCompositing())
renderView->compositor()->frameViewDidScroll();
}
if (m_didScrollTimer.isActive())
m_didScrollTimer.stop();
m_didScrollTimer.startOneShot(resourcePriorityUpdateDelayAfterScroll, FROM_HERE);
if (AXObjectCache* cache = m_frame->document()->existingAXObjectCache())
cache->handleScrollPositionChanged(this);
frame().loader().saveScrollState();
}
void FrameView::didScrollTimerFired(Timer<FrameView>*)
{
if (m_frame->document() && m_frame->document()->renderView()) {
ResourceLoadPriorityOptimizer::resourceLoadPriorityOptimizer()->updateAllImageResourcePriorities();
}
}
void FrameView::updateLayersAndCompositingAfterScrollIfNeeded()
{
// Nothing to do after scrolling if there are no fixed position elements.
if (!hasViewportConstrainedObjects())
return;
RefPtrWillBeRawPtr<FrameView> protect(this);
// If there fixed position elements, scrolling may cause compositing layers to change.
// Update widget and layer positions after scrolling, but only if we're not inside of
// layout.
if (!m_nestedLayoutCount) {
updateWidgetPositions();
if (RenderView* renderView = this->renderView())
renderView->layer()->setNeedsCompositingInputsUpdate();
}
}
bool FrameView::computeCompositedSelectionBounds(LocalFrame& frame, CompositedSelectionBound& start, CompositedSelectionBound& end)
{
const VisibleSelection &selection = frame.selection().selection();
if (!selection.isCaretOrRange())
return false;
VisiblePosition visibleStart(selection.visibleStart());
VisiblePosition visibleEnd(selection.visibleEnd());
RenderedPosition renderedStart(visibleStart);
RenderedPosition renderedEnd(visibleEnd);
renderedStart.positionInGraphicsLayerBacking(start);
if (!start.layer)
return false;
renderedEnd.positionInGraphicsLayerBacking(end);
if (!end.layer)
return false;
if (selection.isCaret()) {
start.type = end.type = CompositedSelectionBound::Caret;
return true;
}
TextDirection startDir = visibleStart.deepEquivalent().primaryDirection();
TextDirection endDir = visibleEnd.deepEquivalent().primaryDirection();
start.type = startDir == RTL ? CompositedSelectionBound::SelectionRight : CompositedSelectionBound::SelectionLeft;
end.type = endDir == RTL ? CompositedSelectionBound::SelectionLeft : CompositedSelectionBound::SelectionRight;
return true;
}
void FrameView::updateCompositedSelectionBoundsIfNeeded()
{
if (!RuntimeEnabledFeatures::compositedSelectionUpdateEnabled())
return;
Page* page = frame().page();
ASSERT(page);
CompositedSelectionBound start, end;
LocalFrame* frame = toLocalFrame(page->focusController().focusedOrMainFrame());
if (!frame || !computeCompositedSelectionBounds(*frame, start, end)) {
page->chrome().client().clearCompositedSelectionBounds();
return;
}
page->chrome().client().updateCompositedSelectionBounds(start, end);
}
bool FrameView::isRubberBandInProgress() const
{
if (scrollbarsSuppressed())
return false;
// If the main thread updates the scroll position for this FrameView, we should return
// ScrollAnimator::isRubberBandInProgress().
if (ScrollAnimator* scrollAnimator = existingScrollAnimator())
return scrollAnimator->isRubberBandInProgress();
return false;
}
HostWindow* FrameView::hostWindow() const
{
Page* page = frame().page();
if (!page)
return 0;
return &page->chrome();
}
void FrameView::contentRectangleForPaintInvalidation(const IntRect& rect)
{
ASSERT(paintInvalidationIsAllowed());
ASSERT(!m_frame->ownerRenderer());
if (m_isTrackingPaintInvalidations) {
IntRect paintInvalidationRect = rect;
paintInvalidationRect.move(-scrollOffset());
m_trackedPaintInvalidationRects.append(paintInvalidationRect);
// FIXME: http://crbug.com/368518. Eventually, invalidateContentRectangleForPaint
// is going away entirely once all layout tests are FCM. In the short
// term, no code should be tracking non-composited FrameView paint invalidations.
RELEASE_ASSERT_NOT_REACHED();
}
IntRect paintRect = rect;
if (clipsPaintInvalidations())
paintRect.intersect(visibleContentRect());
if (paintRect.isEmpty())
return;
if (HostWindow* window = hostWindow())
window->invalidateContentsAndRootView(contentsToWindow(paintRect));
}
void FrameView::contentsResized()
{
if (m_frame->isMainFrame() && m_frame->document()) {
if (TextAutosizer* textAutosizer = m_frame->document()->textAutosizer())
textAutosizer->updatePageInfoInAllFrames();
}
ScrollableArea::contentsResized();
setNeedsLayout();
}
void FrameView::scrollbarExistenceDidChange()
{
// We check to make sure the view is attached to a frame() as this method can
// be triggered before the view is attached by LocalFrame::createView(...) setting
// various values such as setScrollBarModes(...) for example. An ASSERT is
// triggered when a view is layout before being attached to a frame().
if (!frame().view())
return;
// Note that simply having overlay scrollbars is not sufficient to be
// certain that scrollbars' presence does not impact layout. This should
// also check if custom scrollbars (as reported by shouldUseCustomScrollbars)
// are in use as well.
// http://crbug.com/269692
bool useOverlayScrollbars = ScrollbarTheme::theme()->usesOverlayScrollbars();
// FIXME: this call to layout() could be called within FrameView::layout(), but before performLayout(),
// causing double-layout. See also crbug.com/429242.
if (!useOverlayScrollbars && needsLayout())
layout();
if (renderView() && renderView()->usesCompositing()) {
renderView()->compositor()->frameViewScrollbarsExistenceDidChange();
if (!useOverlayScrollbars)
renderView()->compositor()->frameViewDidChangeSize();
}
}
void FrameView::handleLoadCompleted()
{
// Once loading has completed, allow autoSize one last opportunity to
// reduce the size of the frame.
if (m_autoSizeInfo)
m_autoSizeInfo->autoSizeIfNeeded();
}
void FrameView::scheduleRelayout()
{
ASSERT(m_frame->view() == this);
if (isSubtreeLayout()) {
m_layoutSubtreeRoot->markContainingBlocksForLayout(false);
m_layoutSubtreeRoot = 0;
}
if (!m_layoutSchedulingEnabled)
return;
if (!needsLayout())
return;
if (!m_frame->document()->shouldScheduleLayout())
return;
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "InvalidateLayout", "frame", m_frame.get());
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", "stack", InspectorCallStackEvent::currentCallStack());
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentation::didInvalidateLayout(m_frame.get());
if (m_hasPendingLayout)
return;
m_hasPendingLayout = true;
page()->animator().scheduleVisualUpdate();
lifecycle().ensureStateAtMost(DocumentLifecycle::StyleClean);
}
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);
// FIXME: Should this call shouldScheduleLayout instead?
if (!m_frame->document()->isActive())
return;
RenderView* renderView = this->renderView();
if (renderView && renderView->needsLayout()) {
if (relayoutRoot)
relayoutRoot->markContainingBlocksForLayout(false);
return;
}
if (layoutPending() || !m_layoutSchedulingEnabled) {
if (m_layoutSubtreeRoot != relayoutRoot) {
if (isObjectAncestorContainerOf(m_layoutSubtreeRoot, relayoutRoot)) {
// Keep the current root
relayoutRoot->markContainingBlocksForLayout(false, m_layoutSubtreeRoot);
ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
} else if (isSubtreeLayout() && isObjectAncestorContainerOf(relayoutRoot, m_layoutSubtreeRoot)) {
// Re-root at relayoutRoot
m_layoutSubtreeRoot->markContainingBlocksForLayout(false, relayoutRoot);
m_layoutSubtreeRoot = relayoutRoot;
ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
} else {
// Just do a full relayout
if (isSubtreeLayout())
m_layoutSubtreeRoot->markContainingBlocksForLayout(false);
m_layoutSubtreeRoot = 0;
relayoutRoot->markContainingBlocksForLayout(false);
}
}
} else if (m_layoutSchedulingEnabled) {
m_layoutSubtreeRoot = relayoutRoot;
ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
m_hasPendingLayout = true;
page()->animator().scheduleVisualUpdate();
lifecycle().ensureStateAtMost(DocumentLifecycle::StyleClean);
}
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "InvalidateLayout", "frame", m_frame.get());
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", "stack", InspectorCallStackEvent::currentCallStack());
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentation::didInvalidateLayout(m_frame.get());
}
bool FrameView::layoutPending() const
{
// FIXME: This should check Document::lifecycle instead.
return m_hasPendingLayout;
}
bool FrameView::isInPerformLayout() const
{
ASSERT(m_inPerformLayout == (lifecycle().state() == DocumentLifecycle::InPerformLayout));
return m_inPerformLayout;
}
bool FrameView::needsLayout() const
{
// This can return true in cases where the document does not have a body yet.
// Document::shouldScheduleLayout takes care of preventing us from scheduling
// layout in that case.
RenderView* renderView = this->renderView();
return layoutPending()
|| (renderView && renderView->needsLayout())
|| isSubtreeLayout();
}
void FrameView::setNeedsLayout()
{
if (RenderView* renderView = this->renderView())
renderView->setNeedsLayout();
}
bool FrameView::isTransparent() const
{
return m_isTransparent;
}
void FrameView::setTransparent(bool isTransparent)
{
m_isTransparent = isTransparent;
DisableCompositingQueryAsserts disabler;
if (renderView() && renderView()->layer()->hasCompositedLayerMapping())
renderView()->layer()->compositedLayerMapping()->updateContentsOpaque();
}
bool FrameView::hasOpaqueBackground() const
{
return !m_isTransparent && !m_baseBackgroundColor.hasAlpha();
}
Color FrameView::baseBackgroundColor() const
{
return m_baseBackgroundColor;
}
void FrameView::setBaseBackgroundColor(const Color& backgroundColor)
{
m_baseBackgroundColor = backgroundColor;
if (renderView() && renderView()->layer()->hasCompositedLayerMapping()) {
CompositedLayerMapping* compositedLayerMapping = renderView()->layer()->compositedLayerMapping();
compositedLayerMapping->updateContentsOpaque();
if (compositedLayerMapping->mainGraphicsLayer())
compositedLayerMapping->mainGraphicsLayer()->setNeedsDisplay();
}
recalculateScrollbarOverlayStyle();
}
void FrameView::updateBackgroundRecursively(const Color& backgroundColor, bool transparent)
{
for (Frame* frame = m_frame.get(); frame; frame = frame->tree().traverseNext(m_frame.get())) {
if (!frame->isLocalFrame())
continue;
if (FrameView* view = toLocalFrame(frame)->view()) {
view->setTransparent(transparent);
view->setBaseBackgroundColor(backgroundColor);
}
}
}
void FrameView::scrollToAnchor()
{
RefPtrWillBeRawPtr<Node> anchorNode = m_maintainScrollPositionAnchor;
if (!anchorNode)
return;
if (!anchorNode->renderer())
return;
LayoutRect rect;
if (anchorNode != m_frame->document())
rect = anchorNode->boundingBox();
RefPtrWillBeRawPtr<LocalFrame> boundaryFrame = m_frame->document()->findUnsafeParentScrollPropagationBoundary();
if (boundaryFrame)
boundaryFrame->view()->setSafeToPropagateScrollToParent(false);
// Scroll nested layers and frames to reveal the anchor.
// Align to the top and to the closest side (this matches other browsers).
anchorNode->renderer()->scrollRectToVisible(rect, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignTopAlways);
if (boundaryFrame)
boundaryFrame->view()->setSafeToPropagateScrollToParent(true);
if (AXObjectCache* cache = m_frame->document()->existingAXObjectCache())
cache->handleScrolledToAnchor(anchorNode.get());
// scrollRectToVisible can call into setScrollPosition(), which resets m_maintainScrollPositionAnchor.
m_maintainScrollPositionAnchor = anchorNode;
}
bool FrameView::updateWidgets()
{
// This is always called from updateWidgetsTimerFired.
// m_updateWidgetsTimer should only be scheduled if we have widgets to update.
// Thus I believe we can stop checking isEmpty here, and just ASSERT isEmpty:
// FIXME: This assert has been temporarily removed due to https://crbug.com/430344
if (m_nestedLayoutCount > 1 || m_partUpdateSet.isEmpty())
return true;
// Need to swap because script will run inside the below loop and invalidate the iterator.
EmbeddedObjectSet objects;
objects.swap(m_partUpdateSet);
for (const auto& embeddedObject : objects) {
RenderEmbeddedObject& object = *embeddedObject;
HTMLPlugInElement* element = toHTMLPlugInElement(object.node());
// The object may have already been destroyed (thus node cleared),
// but FrameView holds a manual ref, so it won't have been deleted.
if (!element)
continue;
// No need to update if it's already crashed or known to be missing.
if (object.showsUnavailablePluginIndicator())
continue;
if (element->needsWidgetUpdate())
element->updateWidget();
object.updateWidgetPosition();
// Prevent plugins from causing infinite updates of themselves.
// FIXME: Do we really need to prevent this?
m_partUpdateSet.remove(&object);
}
return m_partUpdateSet.isEmpty();
}
void FrameView::updateWidgetsTimerFired(Timer<FrameView>*)
{
ASSERT(!isInPerformLayout());
RefPtrWillBeRawPtr<FrameView> protect(this);
m_updateWidgetsTimer.stop();
for (unsigned i = 0; i < maxUpdateWidgetsIterations; ++i) {
if (updateWidgets())
return;
}
}
void FrameView::flushAnyPendingPostLayoutTasks()
{
ASSERT(!isInPerformLayout());
if (m_postLayoutTasksTimer.isActive())
performPostLayoutTasks();
if (m_updateWidgetsTimer.isActive())
updateWidgetsTimerFired(0);
}
void FrameView::scheduleUpdateWidgetsIfNecessary()
{
ASSERT(!isInPerformLayout());
if (m_updateWidgetsTimer.isActive() || m_partUpdateSet.isEmpty())
return;
m_updateWidgetsTimer.startOneShot(0, FROM_HERE);
}
void FrameView::performPostLayoutTasks()
{
// FIXME: We can reach here, even when the page is not active!
// http/tests/inspector/elements/html-link-import.html and many other
// tests hit that case.
// We should ASSERT(isActive()); or at least return early if we can!
ASSERT(!isInPerformLayout()); // Always before or after performLayout(), part of the highest-level layout() call.
TRACE_EVENT0("blink", "FrameView::performPostLayoutTasks");
RefPtrWillBeRawPtr<FrameView> protect(this);
m_postLayoutTasksTimer.stop();
m_frame->selection().setCaretRectNeedsUpdate();
{
// Hits in compositing/overflow/do-not-repaint-if-scrolling-composited-layers.html
DisableCompositingQueryAsserts disabler;
m_frame->selection().updateAppearance();
}
ASSERT(m_frame->document());
if (m_nestedLayoutCount <= 1) {
if (m_firstLayoutCallbackPending)
m_firstLayoutCallbackPending = false;
// Ensure that we always send this eventually.
if (!m_frame->document()->parsing() && m_frame->loader().stateMachine()->committedFirstRealDocumentLoad())
m_isVisuallyNonEmpty = true;
// If the layout was done with pending sheets, we are not in fact visually non-empty yet.
if (m_isVisuallyNonEmpty && !m_frame->document()->didLayoutWithPendingStylesheets() && m_firstVisuallyNonEmptyLayoutCallbackPending) {
m_firstVisuallyNonEmptyLayoutCallbackPending = false;
// FIXME: This callback is probably not needed, but is currently used
// by android for setting the background color.
m_frame->loader().client()->dispatchDidFirstVisuallyNonEmptyLayout();
}
}
FontFaceSet::didLayout(*m_frame->document());
updateWidgetPositions();
// Plugins could have torn down the page inside updateWidgetPositions().
if (!renderView())
return;
scheduleUpdateWidgetsIfNecessary();
if (Page* page = m_frame->page()) {
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->notifyLayoutUpdated();
}
scrollToAnchor();
sendResizeEventIfNeeded();
}
bool FrameView::wasViewportResized()
{
ASSERT(m_frame);
RenderView* renderView = this->renderView();
if (!renderView)
return false;
ASSERT(renderView->style());
return (layoutSize(IncludeScrollbars) != m_lastViewportSize || renderView->style()->zoom() != m_lastZoomFactor);
}
void FrameView::sendResizeEventIfNeeded()
{
ASSERT(m_frame);
RenderView* renderView = this->renderView();
if (!renderView || renderView->document().printing())
return;
if (!wasViewportResized())
return;
m_lastViewportSize = layoutSize(IncludeScrollbars);
m_lastZoomFactor = renderView->style()->zoom();
m_frame->document()->enqueueResizeEvent();
if (m_frame->isMainFrame())
InspectorInstrumentation::didResizeMainFrame(m_frame->page());
}
void FrameView::postLayoutTimerFired(Timer<FrameView>*)
{
performPostLayoutTasks();
}
void FrameView::updateCounters()
{
RenderView* view = renderView();
if (!view->hasRenderCounters())
return;
for (RenderObject* renderer = view; renderer; renderer = renderer->nextInPreOrder()) {
if (!renderer->isCounter())
continue;
toRenderCounter(renderer)->updateCounter();
}
}
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;
RefPtrWillBeRawPtr<OverflowEvent> event = OverflowEvent::create(horizontalOverflowChanged, horizontalOverflow, verticalOverflowChanged, verticalOverflow);
event->setTarget(m_viewportRenderer->node());
m_frame->document()->enqueueAnimationFrameEvent(event.release());
}
}
IntRect FrameView::windowClipRect(IncludeScrollbarsInRect scrollbarInclusion) const
{
ASSERT(m_frame->view() == this);
// Set our clip rect to be our contents.
IntRect clipRect = contentsToWindow(visibleContentRect(scrollbarInclusion));
if (!m_frame->deprecatedLocalOwner())
return clipRect;
// Take our owner element and get its clip rect.
// FIXME: Do we need to do this for remote frames?
HTMLFrameOwnerElement* ownerElement = m_frame->deprecatedLocalOwner();
FrameView* parentView = ownerElement->document().view();
if (parentView)
clipRect.intersect(parentView->windowClipRectForFrameOwner(ownerElement));
return clipRect;
}
IntRect FrameView::windowClipRectForFrameOwner(const HTMLFrameOwnerElement* ownerElement) const
{
// The renderer can sometimes be null when style="display:none" interacts
// with external content and plugins.
if (!ownerElement->renderer())
return windowClipRect();
// If we have no layer, just return our window clip rect.
const RenderLayer* enclosingLayer = ownerElement->renderer()->enclosingLayer();
if (!enclosingLayer)
return windowClipRect();
// FIXME: childrenClipRect relies on compositingState, which is not necessarily up to date.
// https://code.google.com/p/chromium/issues/detail?id=343769
DisableCompositingQueryAsserts disabler;
// Apply the clip from the layer.
IntRect clipRect = contentsToWindow(pixelSnappedIntRect(enclosingLayer->clipper().childrenClipRect()));
return intersection(clipRect, windowClipRect());
}
bool FrameView::isActive() const
{
Page* page = frame().page();
return page && page->focusController().isActive();
}
void FrameView::scrollTo(const DoublePoint& newPosition)
{
DoublePoint oldPosition = m_scrollPosition;
DoubleSize scrollDelta = newPosition - oldPosition;
if (scrollDelta.isZero())
return;
if (m_frame->settings() && m_frame->settings()->rootLayerScrolls()) {
// Don't scroll the FrameView!
ASSERT_NOT_REACHED();
}
m_scrollPosition = newPosition;
if (!scrollbarsSuppressed())
m_pendingScrollDelta += scrollDelta;
updateLayersAndCompositingAfterScrollIfNeeded();
scrollPositionChanged();
frame().loader().client()->didChangeScrollOffset();
}
void FrameView::invalidateScrollbarRect(Scrollbar* scrollbar, const IntRect& rect)
{
// Add in our offset within the FrameView.
IntRect dirtyRect = rect;
dirtyRect.moveBy(scrollbar->location());
if (isInPerformLayout())
addScrollbarDamage(scrollbar, rect);
else
invalidateRect(dirtyRect);
}
void FrameView::getTickmarks(Vector<IntRect>& tickmarks) const
{
if (!m_tickmarks.isEmpty())
tickmarks = m_tickmarks;
else
tickmarks = frame().document()->markers().renderedRectsForMarkers(DocumentMarker::TextMatch);
}
IntRect FrameView::windowResizerRect() const
{
Page* page = frame().page();
if (!page)
return IntRect();
return page->chrome().windowResizerRect();
}
void FrameView::setVisibleContentScaleFactor(float visibleContentScaleFactor)
{
if (m_visibleContentScaleFactor == visibleContentScaleFactor)
return;
m_visibleContentScaleFactor = visibleContentScaleFactor;
updateScrollbars(scrollOffsetDouble());
}
void FrameView::setInputEventsTransformForEmulation(const IntSize& offset, float contentScaleFactor)
{
m_inputEventsOffsetForEmulation = offset;
m_inputEventsScaleFactorForEmulation = contentScaleFactor;
}
IntSize FrameView::inputEventsOffsetForEmulation() const
{
return m_inputEventsOffsetForEmulation;
}
float FrameView::inputEventsScaleFactor() const
{
float pageScale = m_frame->settings()->pinchVirtualViewportEnabled()
? m_frame->page()->frameHost().pinchViewport().scale()
: visibleContentScaleFactor();
return pageScale * m_inputEventsScaleFactorForEmulation;
}
bool FrameView::scrollbarsCanBeActive() const
{
if (m_frame->view() != this)
return false;
return !!m_frame->document();
}
IntRect FrameView::scrollableAreaBoundingBox() const
{
RenderPart* ownerRenderer = frame().ownerRenderer();
if (!ownerRenderer)
return frameRect();
return ownerRenderer->absoluteContentQuad().enclosingBoundingBox();
}
bool FrameView::isScrollable()
{
return scrollingReasons() == Scrollable;
}
FrameView::ScrollingReasons FrameView::scrollingReasons()
{
// Check for:
// 1) If there an actual overflow.
// 2) display:none or visibility:hidden set to self or inherited.
// 3) overflow{-x,-y}: hidden;
// 4) scrolling: no;
// Covers #1
IntSize contentsSize = this->contentsSize();
IntSize visibleContentSize = visibleContentRect().size();
if ((contentsSize.height() <= visibleContentSize.height() && contentsSize.width() <= visibleContentSize.width()))
return NotScrollableNoOverflow;
// Covers #2.
// FIXME: Do we need to fix this for OOPI?
HTMLFrameOwnerElement* owner = m_frame->deprecatedLocalOwner();
if (owner && (!owner->renderer() || !owner->renderer()->visibleToHitTesting()))
return NotScrollableNotVisible;
// Cover #3 and #4.
ScrollbarMode horizontalMode;
ScrollbarMode verticalMode;
calculateScrollbarModesForLayoutAndSetViewportRenderer(horizontalMode, verticalMode, RulesFromWebContentOnly);
if (horizontalMode == ScrollbarAlwaysOff && verticalMode == ScrollbarAlwaysOff)
return NotScrollableExplicitlyDisabled;
return Scrollable;
}
void FrameView::updateScrollableAreaSet()
{
// That ensures that only inner frames are cached.
FrameView* parentFrameView = this->parentFrameView();
if (!parentFrameView)
return;
if (!isScrollable()) {
parentFrameView->removeScrollableArea(this);
return;
}
parentFrameView->addScrollableArea(this);
}
bool FrameView::shouldSuspendScrollAnimations() const
{
return m_frame->loader().state() != FrameStateComplete;
}
void FrameView::scrollbarStyleChanged()
{
// FIXME: Why does this only apply to the main frame?
if (!m_frame->isMainFrame())
return;
adjustScrollbarOpacity();
contentsResized();
updateScrollbars(scrollOffsetDouble());
positionScrollbarLayers();
}
void FrameView::notifyPageThatContentAreaWillPaint() const
{
Page* page = m_frame->page();
if (!page)
return;
contentAreaWillPaint();
if (!m_scrollableAreas)
return;
for (const auto& scrollableArea : *m_scrollableAreas) {
if (!scrollableArea->scrollbarsCanBeActive())
continue;
scrollableArea->contentAreaWillPaint();
}
}
bool FrameView::scrollAnimatorEnabled() const
{
return m_frame->settings() && m_frame->settings()->scrollAnimatorEnabled();
}
void FrameView::updateAnnotatedRegions()
{
Document* document = m_frame->document();
if (!document->hasAnnotatedRegions())
return;
Vector<AnnotatedRegionValue> newRegions;
document->renderBox()->collectAnnotatedRegions(newRegions);
if (newRegions == document->annotatedRegions())
return;
document->setAnnotatedRegions(newRegions);
if (Page* page = m_frame->page())
page->chrome().client().annotatedRegionsChanged();
}
void FrameView::updateScrollCorner()
{
RefPtr<RenderStyle> cornerStyle;
IntRect cornerRect = scrollCornerRect();
Document* doc = m_frame->document();
if (doc && !cornerRect.isEmpty()) {
// Try the <body> element first as a scroll corner source.
if (Element* body = doc->body()) {
if (RenderObject* renderer = body->renderer())
cornerStyle = renderer->getUncachedPseudoStyle(PseudoStyleRequest(SCROLLBAR_CORNER), renderer->style());
}
if (!cornerStyle) {
// If the <body> didn't have a custom style, then the root element might.
if (Element* docElement = doc->documentElement()) {
if (RenderObject* renderer = docElement->renderer())
cornerStyle = renderer->getUncachedPseudoStyle(PseudoStyleRequest(SCROLLBAR_CORNER), renderer->style());
}
}
if (!cornerStyle) {
// If we have an owning ipage/LocalFrame element, then it can set the custom scrollbar also.
if (RenderPart* renderer = m_frame->ownerRenderer())
cornerStyle = renderer->getUncachedPseudoStyle(PseudoStyleRequest(SCROLLBAR_CORNER), renderer->style());
}
}
if (cornerStyle) {
if (!m_scrollCorner)
m_scrollCorner = RenderScrollbarPart::createAnonymous(doc);
m_scrollCorner->setStyle(cornerStyle.release());
invalidateScrollCorner(cornerRect);
} else if (m_scrollCorner) {
m_scrollCorner->destroy();
m_scrollCorner = nullptr;
}
}
Color FrameView::documentBackgroundColor() const
{
// <https://bugs.webkit.org/show_bug.cgi?id=59540> We blend the background color of
// the document and the body against the base background color of the frame view.
// Background images are unfortunately impractical to include.
Color result = baseBackgroundColor();
if (!frame().document())
return result;
Element* htmlElement = frame().document()->documentElement();
Element* bodyElement = frame().document()->body();
// We take the aggregate of the base background color
// the <html> background color, and the <body>
// background color to find the document color. The
// addition of the base background color is not
// technically part of the document background, but it
// otherwise poses problems when the aggregate is not
// fully opaque.
if (htmlElement && htmlElement->renderer())
result = result.blend(htmlElement->renderer()->style()->visitedDependentColor(CSSPropertyBackgroundColor));
if (bodyElement && bodyElement->renderer())
result = result.blend(bodyElement->renderer()->style()->visitedDependentColor(CSSPropertyBackgroundColor));
return result;
}
bool FrameView::hasCustomScrollbars() const
{
const ChildrenWidgetSet* viewChildren = children();
for (const RefPtrWillBeMember<Widget>& child : *viewChildren) {
Widget* widget = child.get();
if (widget->isFrameView()) {
if (toFrameView(widget)->hasCustomScrollbars())
return true;
} else if (widget->isScrollbar()) {
if (toScrollbar(widget)->isCustomScrollbar())
return true;
}
}
return false;
}
FrameView* FrameView::parentFrameView() const
{
if (!parent())
return 0;
Frame* parentFrame = m_frame->tree().parent();
if (parentFrame && parentFrame->isLocalFrame())
return toLocalFrame(parentFrame)->view();
return 0;
}
bool FrameView::wasScrolledByUser() const
{
return m_wasScrolledByUser;
}
void FrameView::setWasScrolledByUser(bool wasScrolledByUser)
{
if (m_inProgrammaticScroll)
return;
m_maintainScrollPositionAnchor = nullptr;
m_wasScrolledByUser = wasScrolledByUser;
}
void FrameView::setPaintBehavior(PaintBehavior behavior)
{
m_paintBehavior = behavior;
}
PaintBehavior FrameView::paintBehavior() const
{
return m_paintBehavior;
}
bool FrameView::isPainting() const
{
return m_isPainting;
}
void FrameView::setNodeToDraw(Node* node)
{
m_nodeToDraw = node;
}
void FrameView::updateWidgetPositionsIfNeeded()
{
if (!m_needsUpdateWidgetPositions)
return;
m_needsUpdateWidgetPositions = false;
updateWidgetPositions();
}
void FrameView::updateLayoutAndStyleForPainting()
{
// Updating layout can run script, which can tear down the FrameView.
RefPtrWillBeRawPtr<FrameView> protector(this);
updateLayoutAndStyleIfNeededRecursive();
updateWidgetPositionsIfNeeded();
RenderView* view = renderView();
if (view) {
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateLayerTree", "frame", m_frame.get());
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentation::willUpdateLayerTree(m_frame.get());
view->compositor()->updateIfNeededRecursive();
if (view->compositor()->inCompositingMode() && m_frame->isLocalRoot())
m_frame->page()->scrollingCoordinator()->updateAfterCompositingChangeIfNeeded();
updateCompositedSelectionBoundsIfNeeded();
InspectorInstrumentation::didUpdateLayerTree(m_frame.get());
}
scrollContentsIfNeededRecursive();
if (view)
invalidateTreeIfNeededRecursive();
ASSERT(lifecycle().state() == DocumentLifecycle::PaintInvalidationClean);
}
void FrameView::updateLayoutAndStyleIfNeededRecursive()
{
// We have to crawl our entire tree looking for any FrameViews that need
// layout and make sure they are up to date.
// Mac actually tests for intersection with the dirty region and tries not to
// update layout for frames that are outside the dirty region. Not only does this seem
// pointless (since those frames will have set a zero timer to layout anyway), but
// it is also incorrect, since if two frames overlap, the first could be excluded from the dirty
// region but then become included later by the second frame adding rects to the dirty region
// when it lays out.
m_frame->document()->updateRenderTreeIfNeeded();
if (needsLayout())
layout();
// FIXME: Calling layout() shouldn't trigger scripe execution or have any
// observable effects on the frame tree but we're not quite there yet.
WillBeHeapVector<RefPtrWillBeMember<FrameView> > frameViews;
for (Frame* child = m_frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
if (!child->isLocalFrame())
continue;
if (FrameView* view = toLocalFrame(child)->view())
frameViews.append(view);
}
for (const auto& frameView : frameViews)
frameView->updateLayoutAndStyleIfNeededRecursive();
// When an <iframe> gets composited, it triggers an extra style recalc in its containing FrameView.
// To avoid pushing an invalid tree for display, we have to check for this case and do another
// style recalc. The extra style recalc needs to happen after our child <iframes> were updated.
// FIXME: We shouldn't be triggering an extra style recalc in the first place.
if (m_frame->document()->hasSVGFilterElementsRequiringLayerUpdate()) {
m_frame->document()->updateRenderTreeIfNeeded();
if (needsLayout())
layout();
}
// These asserts ensure that parent frames are clean, when child frames finished updating layout and style.
ASSERT(!needsLayout());
ASSERT(!m_frame->document()->hasSVGFilterElementsRequiringLayerUpdate());
#if ENABLE(ASSERT)
m_frame->document()->renderView()->assertRendererLaidOut();
#endif
}
void FrameView::invalidateTreeIfNeededRecursive()
{
// FIXME: We should be more aggressive at cutting tree traversals.
lifecycle().advanceTo(DocumentLifecycle::InPaintInvalidation);
invalidateTreeIfNeeded();
lifecycle().advanceTo(DocumentLifecycle::PaintInvalidationClean);
for (Frame* child = m_frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
if (!child->isLocalFrame())
continue;
toLocalFrame(child)->view()->invalidateTreeIfNeededRecursive();
}
m_doFullPaintInvalidation = false;
}
void FrameView::enableAutoSizeMode(const IntSize& minSize, const IntSize& maxSize)
{
if (!m_autoSizeInfo)
m_autoSizeInfo = FrameViewAutoSizeInfo::create(this);
m_autoSizeInfo->configureAutoSizeMode(minSize, maxSize);
setLayoutSizeFixedToFrameSize(true);
setNeedsLayout();
scheduleRelayout();
}
void FrameView::disposeAutoSizeInfo()
{
if (!m_autoSizeInfo)
return;
setLayoutSizeFixedToFrameSize(false);
setNeedsLayout();
scheduleRelayout();
// Since autosize mode forces the scrollbar mode, change them to being auto.
setVerticalScrollbarLock(false);
setHorizontalScrollbarLock(false);
setScrollbarModes(ScrollbarAuto, ScrollbarAuto);
m_autoSizeInfo.clear();
}
void FrameView::forceLayout(bool allowSubtree)
{
layout(allowSubtree);
}
void FrameView::forceLayoutForPagination(const FloatSize& pageSize, const FloatSize& originalPageSize, float maximumShrinkFactor)
{
// Dumping externalRepresentation(m_frame->renderer()).ascii() is a good trick to see
// the state of things before and after the layout
if (RenderView* renderView = this->renderView()) {
float pageLogicalWidth = renderView->style()->isHorizontalWritingMode() ? pageSize.width() : pageSize.height();
float pageLogicalHeight = renderView->style()->isHorizontalWritingMode() ? pageSize.height() : pageSize.width();
LayoutUnit flooredPageLogicalWidth = static_cast<LayoutUnit>(pageLogicalWidth);
LayoutUnit flooredPageLogicalHeight = static_cast<LayoutUnit>(pageLogicalHeight);
renderView->setLogicalWidth(flooredPageLogicalWidth);
renderView->setPageLogicalHeight(flooredPageLogicalHeight);
renderView->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
forceLayout();
// If we don't fit in the given page width, we'll lay out again. If we don't fit in the
// page width when shrunk, we will lay out at maximum shrink and clip extra content.
// FIXME: We are assuming a shrink-to-fit printing implementation. A cropping
// implementation should not do this!
bool horizontalWritingMode = renderView->style()->isHorizontalWritingMode();
const LayoutRect& documentRect = renderView->documentRect();
LayoutUnit docLogicalWidth = horizontalWritingMode ? documentRect.width() : documentRect.height();
if (docLogicalWidth > pageLogicalWidth) {
FloatSize expectedPageSize(std::min<float>(documentRect.width().toFloat(), pageSize.width() * maximumShrinkFactor), std::min<float>(documentRect.height().toFloat(), pageSize.height() * maximumShrinkFactor));
FloatSize maxPageSize = m_frame->resizePageRectsKeepingRatio(FloatSize(originalPageSize.width(), originalPageSize.height()), expectedPageSize);
pageLogicalWidth = horizontalWritingMode ? maxPageSize.width() : maxPageSize.height();
pageLogicalHeight = horizontalWritingMode ? maxPageSize.height() : maxPageSize.width();
flooredPageLogicalWidth = static_cast<LayoutUnit>(pageLogicalWidth);
flooredPageLogicalHeight = static_cast<LayoutUnit>(pageLogicalHeight);
renderView->setLogicalWidth(flooredPageLogicalWidth);
renderView->setPageLogicalHeight(flooredPageLogicalHeight);
renderView->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
forceLayout();
const LayoutRect& updatedDocumentRect = renderView->documentRect();
LayoutUnit docLogicalHeight = horizontalWritingMode ? updatedDocumentRect.height() : updatedDocumentRect.width();
LayoutUnit docLogicalTop = horizontalWritingMode ? updatedDocumentRect.y() : updatedDocumentRect.x();
LayoutUnit docLogicalRight = horizontalWritingMode ? updatedDocumentRect.maxX() : updatedDocumentRect.maxY();
LayoutUnit clippedLogicalLeft = 0;
if (!renderView->style()->isLeftToRightDirection())
clippedLogicalLeft = docLogicalRight - pageLogicalWidth;
LayoutRect overflow(clippedLogicalLeft, docLogicalTop, pageLogicalWidth, docLogicalHeight);
if (!horizontalWritingMode)
overflow = overflow.transposedRect();
renderView->clearLayoutOverflow();
renderView->addLayoutOverflow(overflow); // This is how we clip in case we overflow again.
}
}
adjustViewSize();
}
IntRect FrameView::convertFromRenderer(const RenderObject& renderer, const IntRect& rendererRect) const
{
IntRect rect = pixelSnappedIntRect(enclosingLayoutRect(renderer.localToAbsoluteQuad(FloatRect(rendererRect)).boundingBox()));
// Convert from page ("absolute") to FrameView coordinates.
rect.moveBy(-scrollPosition());
return rect;
}
IntRect FrameView::convertToRenderer(const RenderObject& renderer, const IntRect& viewRect) const
{
IntRect rect = viewRect;
// Convert from FrameView coords into page ("absolute") coordinates.
rect.moveBy(scrollPosition());
// FIXME: we don't have a way to map an absolute rect down to a local quad, so just
// move the rect for now.
rect.setLocation(roundedIntPoint(renderer.absoluteToLocal(rect.location(), UseTransforms)));
return rect;
}
IntPoint FrameView::convertFromRenderer(const RenderObject& renderer, const IntPoint& rendererPoint) const
{
IntPoint point = roundedIntPoint(renderer.localToAbsolute(rendererPoint, UseTransforms));
// Convert from page ("absolute") to FrameView coordinates.
point.moveBy(-scrollPosition());
return point;
}
IntPoint FrameView::convertToRenderer(const RenderObject& renderer, const IntPoint& viewPoint) const
{
IntPoint point = viewPoint;
// Convert from FrameView coords into page ("absolute") coordinates.
point += IntSize(scrollX(), scrollY());
return roundedIntPoint(renderer.absoluteToLocal(point, UseTransforms));
}
IntRect FrameView::convertToContainingView(const IntRect& localRect) const
{
if (const FrameView* parentView = toFrameView(parent())) {
// Get our renderer in the parent view
RenderPart* renderer = m_frame->ownerRenderer();
if (!renderer)
return localRect;
IntRect rect(localRect);
// Add borders and padding??
rect.move(renderer->borderLeft() + renderer->paddingLeft(),
renderer->borderTop() + renderer->paddingTop());
return parentView->convertFromRenderer(*renderer, rect);
}
return localRect;
}
IntRect FrameView::convertFromContainingView(const IntRect& parentRect) const
{
if (const FrameView* parentView = toFrameView(parent())) {
// Get our renderer in the parent view
RenderPart* renderer = m_frame->ownerRenderer();
if (!renderer)
return parentRect;
IntRect rect = parentView->convertToRenderer(*renderer, parentRect);
// Subtract borders and padding
rect.move(-renderer->borderLeft() - renderer->paddingLeft(),
-renderer->borderTop() - renderer->paddingTop());
return rect;
}
return parentRect;
}
IntPoint FrameView::convertToContainingView(const IntPoint& localPoint) const
{
if (const FrameView* parentView = toFrameView(parent())) {
// Get our renderer in the parent view
RenderPart* renderer = m_frame->ownerRenderer();
if (!renderer)
return localPoint;
IntPoint point(localPoint);
// Add borders and padding
point.move(renderer->borderLeft() + renderer->paddingLeft(),
renderer->borderTop() + renderer->paddingTop());
return parentView->convertFromRenderer(*renderer, point);
}
return localPoint;
}
IntPoint FrameView::convertFromContainingView(const IntPoint& parentPoint) const
{
if (const FrameView* parentView = toFrameView(parent())) {
// Get our renderer in the parent view
RenderPart* renderer = m_frame->ownerRenderer();
if (!renderer)
return parentPoint;
IntPoint point = parentView->convertToRenderer(*renderer, parentPoint);
// Subtract borders and padding
point.move(-renderer->borderLeft() - renderer->paddingLeft(),
-renderer->borderTop() - renderer->paddingTop());
return point;
}
return parentPoint;
}
void FrameView::setTracksPaintInvalidations(bool trackPaintInvalidations)
{
if (trackPaintInvalidations == m_isTrackingPaintInvalidations)
return;
for (Frame* frame = m_frame->tree().top(); frame; frame = frame->tree().traverseNext()) {
if (!frame->isLocalFrame())
continue;
if (RenderView* renderView = toLocalFrame(frame)->contentRenderer())
renderView->compositor()->setTracksPaintInvalidations(trackPaintInvalidations);
}
TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("blink.invalidation"),
"FrameView::setTracksPaintInvalidations", "enabled", trackPaintInvalidations);
resetTrackedPaintInvalidations();
m_isTrackingPaintInvalidations = trackPaintInvalidations;
}
void FrameView::resetTrackedPaintInvalidations()
{
m_trackedPaintInvalidationRects.clear();
if (RenderView* renderView = this->renderView())
renderView->compositor()->resetTrackedPaintInvalidationRects();
}
String FrameView::trackedPaintInvalidationRectsAsText() const
{
TextStream ts;
if (!m_trackedPaintInvalidationRects.isEmpty()) {
ts << "(repaint rects\n";
for (size_t i = 0; i < m_trackedPaintInvalidationRects.size(); ++i)
ts << " (rect " << m_trackedPaintInvalidationRects[i].x() << " " << m_trackedPaintInvalidationRects[i].y() << " " << m_trackedPaintInvalidationRects[i].width() << " " << m_trackedPaintInvalidationRects[i].height() << ")\n";
ts << ")\n";
}
return ts.release();
}
void FrameView::addResizerArea(RenderBox& resizerBox)
{
if (!m_resizerAreas)
m_resizerAreas = adoptPtr(new ResizerAreaSet);
m_resizerAreas->add(&resizerBox);
}
void FrameView::removeResizerArea(RenderBox& resizerBox)
{
if (!m_resizerAreas)
return;
ResizerAreaSet::iterator it = m_resizerAreas->find(&resizerBox);
if (it != m_resizerAreas->end())
m_resizerAreas->remove(it);
}
void FrameView::addScrollableArea(ScrollableArea* scrollableArea)
{
ASSERT(scrollableArea);
if (!m_scrollableAreas)
m_scrollableAreas = adoptPtr(new ScrollableAreaSet);
m_scrollableAreas->add(scrollableArea);
}
void FrameView::removeScrollableArea(ScrollableArea* scrollableArea)
{
if (!m_scrollableAreas)
return;
m_scrollableAreas->remove(scrollableArea);
}
void FrameView::setParent(Widget* parentView)
{
if (parentView == parent())
return;
if (m_scrollbarsAvoidingResizer && parent())
toFrameView(parent())->adjustScrollbarsAvoidingResizerCount(-m_scrollbarsAvoidingResizer);
Widget::setParent(parentView);
if (m_scrollbarsAvoidingResizer && parent())
toFrameView(parent())->adjustScrollbarsAvoidingResizerCount(m_scrollbarsAvoidingResizer);
updateScrollableAreaSet();
}
void FrameView::removeChild(Widget* child)
{
ASSERT(child->parent() == this);
if (child->isFrameView())
removeScrollableArea(toFrameView(child));
child->setParent(0);
m_children.remove(child);
}
bool FrameView::wheelEvent(const PlatformWheelEvent& wheelEvent)
{
bool allowScrolling = userInputScrollable(HorizontalScrollbar) || userInputScrollable(VerticalScrollbar);
// Note that to allow for rubber-band over-scroll behavior, even non-scrollable views
// should handle wheel events.
#if !USE(RUBBER_BANDING)
if (!isScrollable())
allowScrolling = false;
#endif
if (m_frame->settings()->rootLayerScrolls())
allowScrolling = false;
if (allowScrolling && ScrollableArea::handleWheelEvent(wheelEvent))
return true;
// If the frame didn't handle the event, give the pinch-zoom viewport a chance to
// process the scroll event.
if (m_frame->settings()->pinchVirtualViewportEnabled() && m_frame->isMainFrame())
return page()->frameHost().pinchViewport().handleWheelEvent(wheelEvent);
return false;
}
bool FrameView::isVerticalDocument() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return true;
return renderView->style()->isHorizontalWritingMode();
}
bool FrameView::isFlippedDocument() const
{
RenderView* renderView = this->renderView();
if (!renderView)
return false;
return renderView->hasFlippedBlocksWritingMode();
}
bool FrameView::scrollbarsDisabled() const
{
if (!m_frame->settings() || !m_frame->settings()->pinchVirtualViewportEnabled())
return false;
// FIXME: This decision should be made based on whether or not to use
// viewport scrollbars for the main frame. This is implicitly just Android,
// but should be made explicit.
// http://crbug.com/434533
#if !OS(ANDROID)
return false;
#else
return m_frame->isMainFrame();
#endif
}
AXObjectCache* FrameView::axObjectCache() const
{
if (frame().document())
return frame().document()->existingAXObjectCache();
return 0;
}
void FrameView::setCursor(const Cursor& cursor)
{
Page* page = frame().page();
if (!page || !page->settings().deviceSupportsMouse())
return;
page->chrome().setCursor(cursor);
}
void FrameView::frameRectsChanged()
{
if (layoutSizeFixedToFrameSize())
setLayoutSizeInternal(frameRect().size());
for (const auto& child : m_children)
child->frameRectsChanged();
}
void FrameView::setLayoutSizeInternal(const IntSize& size)
{
if (m_layoutSize == size)
return;
m_layoutSize = size;
contentsResized();
}
void FrameView::didAddScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
{
ScrollableArea::didAddScrollbar(scrollbar, orientation);
if (AXObjectCache* cache = axObjectCache())
cache->handleScrollbarUpdate(this);
}
void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
{
ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
if (AXObjectCache* cache = axObjectCache()) {
cache->remove(scrollbar);
cache->handleScrollbarUpdate(this);
}
}
void FrameView::setTopControlsViewportAdjustment(float adjustment)
{
m_topControlsViewportAdjustment = adjustment;
}
IntPoint FrameView::maximumScrollPosition() const
{
// Make the same calculation as in CC's LayerImpl::MaxScrollOffset()
// FIXME: We probably shouldn't be storing the bounds in a float. crbug.com/422331.
FloatSize visibleSize = unscaledVisibleContentSize(ExcludeScrollbars);
visibleSize.expand(0, m_topControlsViewportAdjustment);
FloatSize contentBounds = contentsSize();
contentBounds.scale(visibleContentScaleFactor());
contentBounds = flooredIntSize(contentBounds);
FloatSize maximumOffset = contentBounds - visibleSize - toIntSize(scrollOrigin());
// Convert back to CSS pixels.
maximumOffset.scale(1 / visibleContentScaleFactor());
IntPoint snappedMaximumOffset = flooredIntPoint(maximumOffset);
snappedMaximumOffset.clampNegativeToZero();
return snappedMaximumOffset;
}
void FrameView::addChild(PassRefPtrWillBeRawPtr<Widget> prpChild)
{
Widget* child = prpChild.get();
ASSERT(child != this && !child->parent());
child->setParent(this);
m_children.add(prpChild);
}
void FrameView::setHasHorizontalScrollbar(bool hasBar)
{
if (hasBar && !m_horizontalScrollbar) {
m_horizontalScrollbar = createScrollbar(HorizontalScrollbar);
addChild(m_horizontalScrollbar.get());
didAddScrollbar(m_horizontalScrollbar.get(), HorizontalScrollbar);
m_horizontalScrollbar->styleChanged();
} else if (!hasBar && m_horizontalScrollbar) {
willRemoveScrollbar(m_horizontalScrollbar.get(), HorizontalScrollbar);
// If the scrollbar has been marked as overlapping the window resizer,
// then its removal should reduce the count.
if (m_horizontalScrollbar->overlapsResizer())
adjustScrollbarsAvoidingResizerCount(-1);
removeChild(m_horizontalScrollbar.get());
m_horizontalScrollbar = nullptr;
}
}
void FrameView::setHasVerticalScrollbar(bool hasBar)
{
if (hasBar && !m_verticalScrollbar) {
m_verticalScrollbar = createScrollbar(VerticalScrollbar);
addChild(m_verticalScrollbar.get());
didAddScrollbar(m_verticalScrollbar.get(), VerticalScrollbar);
m_verticalScrollbar->styleChanged();
} else if (!hasBar && m_verticalScrollbar) {
willRemoveScrollbar(m_verticalScrollbar.get(), VerticalScrollbar);
// If the scrollbar has been marked as overlapping the window resizer,
// then its removal should reduce the count.
if (m_verticalScrollbar->overlapsResizer())
adjustScrollbarsAvoidingResizerCount(-1);
removeChild(m_verticalScrollbar.get());
m_verticalScrollbar = nullptr;
}
}
void FrameView::setScrollbarModes(ScrollbarMode horizontalMode, ScrollbarMode verticalMode,
bool horizontalLock, bool verticalLock)
{
bool needsUpdate = false;
if (horizontalMode != horizontalScrollbarMode() && !m_horizontalScrollbarLock) {
m_horizontalScrollbarMode = horizontalMode;
needsUpdate = true;
}
if (verticalMode != verticalScrollbarMode() && !m_verticalScrollbarLock) {
m_verticalScrollbarMode = verticalMode;
needsUpdate = true;
}
if (horizontalLock)
setHorizontalScrollbarLock();
if (verticalLock)
setVerticalScrollbarLock();
if (!needsUpdate)
return;
updateScrollbars(scrollOffsetDouble());
if (!layerForScrolling())
return;
blink::WebLayer* layer = layerForScrolling()->platformLayer();
if (!layer)
return;
layer->setUserScrollable(userInputScrollable(HorizontalScrollbar), userInputScrollable(VerticalScrollbar));
}
void FrameView::scrollbarModes(ScrollbarMode& horizontalMode, ScrollbarMode& verticalMode) const
{
horizontalMode = m_horizontalScrollbarMode;
verticalMode = m_verticalScrollbarMode;
}
void FrameView::setClipsRepaints(bool clipsRepaints)
{
m_clipsRepaints = clipsRepaints;
}
IntSize FrameView::unscaledVisibleContentSize(IncludeScrollbarsInRect scrollbarInclusion) const
{
return scrollbarInclusion == ExcludeScrollbars ? excludeScrollbars(frameRect().size()) : frameRect().size();
}
IntSize FrameView::excludeScrollbars(const IntSize& size) const
{
int verticalScrollbarWidth = 0;
int horizontalScrollbarHeight = 0;
if (Scrollbar* verticalBar = verticalScrollbar())
verticalScrollbarWidth = !verticalBar->isOverlayScrollbar() ? verticalBar->width() : 0;
if (Scrollbar* horizontalBar = horizontalScrollbar())
horizontalScrollbarHeight = !horizontalBar->isOverlayScrollbar() ? horizontalBar->height() : 0;
return IntSize(std::max(0, size.width() - verticalScrollbarWidth),
std::max(0, size.height() - horizontalScrollbarHeight));
}
IntRect FrameView::visibleContentRect(IncludeScrollbarsInRect scollbarInclusion) const
{
FloatSize visibleContentSize = unscaledVisibleContentSize(scollbarInclusion);
visibleContentSize.scale(1 / visibleContentScaleFactor());
return IntRect(flooredIntPoint(m_scrollPosition), expandedIntSize(visibleContentSize));
}
IntSize FrameView::contentsSize() const
{
return m_contentsSize;
}
IntPoint FrameView::minimumScrollPosition() const
{
return IntPoint(-scrollOrigin().x(), -scrollOrigin().y());
}
IntPoint FrameView::adjustScrollPositionWithinRange(const IntPoint& scrollPoint) const
{
if (!constrainsScrollingToContentEdge())
return scrollPoint;
IntPoint newScrollPosition = scrollPoint.shrunkTo(maximumScrollPosition());
newScrollPosition = newScrollPosition.expandedTo(minimumScrollPosition());
return newScrollPosition;
}
DoublePoint FrameView::adjustScrollPositionWithinRange(const DoublePoint& scrollPoint) const
{
if (!constrainsScrollingToContentEdge())
return scrollPoint;
DoublePoint newScrollPosition = scrollPoint.shrunkTo(
maximumScrollPosition().x(), maximumScrollPosition().y());
newScrollPosition = newScrollPosition.expandedTo(
minimumScrollPosition().x(), minimumScrollPosition().y());
return newScrollPosition;
}
void FrameView::adjustScrollbarOpacity()
{
if (m_horizontalScrollbar && layerForHorizontalScrollbar()) {
bool isOpaqueScrollbar = !m_horizontalScrollbar->isOverlayScrollbar();
layerForHorizontalScrollbar()->setContentsOpaque(isOpaqueScrollbar);
}
if (m_verticalScrollbar && layerForVerticalScrollbar()) {
bool isOpaqueScrollbar = !m_verticalScrollbar->isOverlayScrollbar();
layerForVerticalScrollbar()->setContentsOpaque(isOpaqueScrollbar);
}
}
int FrameView::scrollSize(ScrollbarOrientation orientation) const
{
Scrollbar* scrollbar = ((orientation == HorizontalScrollbar) ? m_horizontalScrollbar : m_verticalScrollbar).get();
// If no scrollbars are present, the content may still be scrollable.
if (!scrollbar) {
IntSize scrollSize = m_contentsSize - visibleContentRect().size();
scrollSize.clampNegativeToZero();
return orientation == HorizontalScrollbar ? scrollSize.width() : scrollSize.height();
}
return scrollbar->totalSize() - scrollbar->visibleSize();
}
void FrameView::setScrollOffset(const IntPoint& offset)
{
scrollTo(DoublePoint(adjustScrollPositionWithinRange(offset)));
}
void FrameView::setScrollOffset(const DoublePoint& offset)
{
scrollTo(adjustScrollPositionWithinRange(offset));
}
bool FrameView::scroll(ScrollDirection direction, ScrollGranularity granularity)
{
ScrollDirection physicalDirection =
toPhysicalDirection(direction, isVerticalDocument(), isFlippedDocument());
return ScrollableArea::scroll(physicalDirection, granularity);
}
IntSize FrameView::overhangAmount() const
{
IntSize stretch;
IntPoint currentScrollPosition = scrollPosition();
IntPoint minScrollPosition = minimumScrollPosition();
IntPoint maxScrollPosition = maximumScrollPosition();
if (currentScrollPosition.x() < minScrollPosition.x())
stretch.setWidth(currentScrollPosition.x() - minScrollPosition.x());
if (currentScrollPosition.x() > maxScrollPosition.x())
stretch.setWidth(currentScrollPosition.x() - maxScrollPosition.x());
if (currentScrollPosition.y() < minScrollPosition.y())
stretch.setHeight(currentScrollPosition.y() - minScrollPosition.y());
if (currentScrollPosition.y() > maxScrollPosition.y())
stretch.setHeight(currentScrollPosition.y() - maxScrollPosition.y());
return stretch;
}
void FrameView::windowResizerRectChanged()
{
updateScrollbars(scrollOffsetDouble());
}
static bool useOverlayScrollbars()
{
// FIXME: Need to detect the presence of CSS custom scrollbars, which are non-overlay regardless the ScrollbarTheme.
return ScrollbarTheme::theme()->usesOverlayScrollbars();
}
void FrameView::computeScrollbarExistence(bool& newHasHorizontalScrollbar, bool& newHasVerticalScrollbar, const IntSize& docSize, ComputeScrollbarExistenceOption option) const
{
bool hasHorizontalScrollbar = m_horizontalScrollbar;
bool hasVerticalScrollbar = m_verticalScrollbar;
newHasHorizontalScrollbar = hasHorizontalScrollbar;
newHasVerticalScrollbar = hasVerticalScrollbar;
if (m_frame->settings() && m_frame->settings()->rootLayerScrolls())
return;
ScrollbarMode hScroll = m_horizontalScrollbarMode;
ScrollbarMode vScroll = m_verticalScrollbarMode;
if (hScroll != ScrollbarAuto)
newHasHorizontalScrollbar = (hScroll == ScrollbarAlwaysOn);
if (vScroll != ScrollbarAuto)
newHasVerticalScrollbar = (vScroll == ScrollbarAlwaysOn);
if (m_scrollbarsSuppressed || (hScroll != ScrollbarAuto && vScroll != ScrollbarAuto))
return;
if (hScroll == ScrollbarAuto)
newHasHorizontalScrollbar = docSize.width() > visibleWidth();
if (vScroll == ScrollbarAuto)
newHasVerticalScrollbar = docSize.height() > visibleHeight();
if (useOverlayScrollbars())
return;
IntSize fullVisibleSize = visibleContentRect(IncludeScrollbars).size();
bool attemptToRemoveScrollbars = (option == FirstPass
&& docSize.width() <= fullVisibleSize.width() && docSize.height() <= fullVisibleSize.height());
if (attemptToRemoveScrollbars) {
if (hScroll == ScrollbarAuto)
newHasHorizontalScrollbar = false;
if (vScroll == ScrollbarAuto)
newHasVerticalScrollbar = false;
}
// If we ever turn one scrollbar off, always turn the other one off too.
// Never ever try to both gain/lose a scrollbar in the same pass.
if (!newHasHorizontalScrollbar && hasHorizontalScrollbar && vScroll != ScrollbarAlwaysOn)
newHasVerticalScrollbar = false;
if (!newHasVerticalScrollbar && hasVerticalScrollbar && hScroll != ScrollbarAlwaysOn)
newHasHorizontalScrollbar = false;
}
void FrameView::updateScrollbarGeometry()
{
if (m_horizontalScrollbar) {
int clientWidth = visibleWidth();
IntRect oldRect(m_horizontalScrollbar->frameRect());
IntRect hBarRect((shouldPlaceVerticalScrollbarOnLeft() && m_verticalScrollbar) ? m_verticalScrollbar->width() : 0,
height() - m_horizontalScrollbar->height(),
width() - (m_verticalScrollbar ? m_verticalScrollbar->width() : 0),
m_horizontalScrollbar->height());
m_horizontalScrollbar->setFrameRect(adjustScrollbarRectForResizer(hBarRect, m_horizontalScrollbar.get()));
if (!m_scrollbarsSuppressed && oldRect != m_horizontalScrollbar->frameRect())
m_horizontalScrollbar->invalidate();
if (m_scrollbarsSuppressed)
m_horizontalScrollbar->setSuppressInvalidation(true);
m_horizontalScrollbar->setEnabled(contentsWidth() > clientWidth);
m_horizontalScrollbar->setProportion(clientWidth, contentsWidth());
m_horizontalScrollbar->offsetDidChange();
if (m_scrollbarsSuppressed)
m_horizontalScrollbar->setSuppressInvalidation(false);
}
if (m_verticalScrollbar) {
int clientHeight = visibleHeight();
IntRect oldRect(m_verticalScrollbar->frameRect());
IntRect vBarRect(shouldPlaceVerticalScrollbarOnLeft() ? 0 : (width() - m_verticalScrollbar->width()),
0,
m_verticalScrollbar->width(),
height() - (m_horizontalScrollbar ? m_horizontalScrollbar->height() : 0));
m_verticalScrollbar->setFrameRect(adjustScrollbarRectForResizer(vBarRect, m_verticalScrollbar.get()));
if (!m_scrollbarsSuppressed && oldRect != m_verticalScrollbar->frameRect())
m_verticalScrollbar->invalidate();
if (m_scrollbarsSuppressed)
m_verticalScrollbar->setSuppressInvalidation(true);
m_verticalScrollbar->setEnabled(contentsHeight() > clientHeight);
m_verticalScrollbar->setProportion(clientHeight, contentsHeight());
m_verticalScrollbar->offsetDidChange();
if (m_scrollbarsSuppressed)
m_verticalScrollbar->setSuppressInvalidation(false);
}
}
IntRect FrameView::adjustScrollbarRectForResizer(const IntRect& rect, Scrollbar* scrollbar)
{
// Get our window resizer rect and see if we overlap. Adjust to avoid the overlap
// if necessary.
IntRect adjustedRect(rect);
bool overlapsResizer = false;
if (!rect.isEmpty() && !windowResizerRect().isEmpty()) {
IntRect resizerRect = convertFromContainingWindow(windowResizerRect());
if (rect.intersects(resizerRect)) {
if (scrollbar->orientation() == HorizontalScrollbar) {
int overlap = rect.maxX() - resizerRect.x();
if (overlap > 0 && resizerRect.maxX() >= rect.maxX()) {
adjustedRect.setWidth(rect.width() - overlap);
overlapsResizer = true;
}
} else {
int overlap = rect.maxY() - resizerRect.y();
if (overlap > 0 && resizerRect.maxY() >= rect.maxY()) {
adjustedRect.setHeight(rect.height() - overlap);
overlapsResizer = true;
}
}
}
}
if (overlapsResizer != scrollbar->overlapsResizer()) {
scrollbar->setOverlapsResizer(overlapsResizer);
adjustScrollbarsAvoidingResizerCount(overlapsResizer ? 1 : -1);
}
return adjustedRect;
}
bool FrameView::adjustScrollbarExistence(ComputeScrollbarExistenceOption option)
{
ASSERT(m_inUpdateScrollbars);
// If we came in here with the view already needing a layout, then go ahead and do that
// first. (This will be the common case, e.g., when the page changes due to window resizing for example).
// This layout will not re-enter updateScrollbars and does not count towards our max layout pass total.
if (!m_scrollbarsSuppressed)
scrollbarExistenceDidChange();
bool hasHorizontalScrollbar = m_horizontalScrollbar;
bool hasVerticalScrollbar = m_verticalScrollbar;
bool newHasHorizontalScrollbar = false;
bool newHasVerticalScrollbar = false;
computeScrollbarExistence(newHasHorizontalScrollbar, newHasVerticalScrollbar, contentsSize(), option);
bool scrollbarExistenceChanged = hasHorizontalScrollbar != newHasHorizontalScrollbar || hasVerticalScrollbar != newHasVerticalScrollbar;
if (!scrollbarExistenceChanged)
return false;
setHasHorizontalScrollbar(newHasHorizontalScrollbar);
setHasVerticalScrollbar(newHasVerticalScrollbar);
if (m_scrollbarsSuppressed)
return true;
if (!useOverlayScrollbars())
contentsResized();
scrollbarExistenceDidChange();
return true;
}
void FrameView::updateScrollbars(const DoubleSize& desiredOffset)
{
if (scrollbarsDisabled()) {
setScrollOffsetFromUpdateScrollbars(desiredOffset);
return;
}
if (m_inUpdateScrollbars)
return;
InUpdateScrollbarsScope inUpdateScrollbarsScope(this);
IntSize oldVisibleSize = visibleSize();
bool scrollbarExistenceChanged = false;
int maxUpdateScrollbarsPass = useOverlayScrollbars() || m_scrollbarsSuppressed ? 1 : 3;
for (int updateScrollbarsPass = 0; updateScrollbarsPass < maxUpdateScrollbarsPass; updateScrollbarsPass++) {
if (!adjustScrollbarExistence(updateScrollbarsPass ? Incremental : FirstPass))
break;
scrollbarExistenceChanged = true;
}
updateScrollbarGeometry();
if (scrollbarExistenceChanged) {
// FIXME: Is frameRectsChanged really necessary here? Have any frame rects changed?
frameRectsChanged();
positionScrollbarLayers();
updateScrollCorner();
}
// FIXME: We don't need to do this if we are composited.
IntSize newVisibleSize = visibleSize();
if (newVisibleSize.width() > oldVisibleSize.width()) {
if (shouldPlaceVerticalScrollbarOnLeft())
invalidateRect(IntRect(0, 0, newVisibleSize.width() - oldVisibleSize.width(), newVisibleSize.height()));
else
invalidateRect(IntRect(oldVisibleSize.width(), 0, newVisibleSize.width() - oldVisibleSize.width(), newVisibleSize.height()));
}
if (newVisibleSize.height() > oldVisibleSize.height())
invalidateRect(IntRect(0, oldVisibleSize.height(), newVisibleSize.width(), newVisibleSize.height() - oldVisibleSize.height()));
setScrollOffsetFromUpdateScrollbars(desiredOffset);
}
void FrameView::setScrollOffsetFromUpdateScrollbars(const DoubleSize& offset)
{
DoublePoint adjustedScrollPosition = DoublePoint(offset);
if (!isRubberBandInProgress())
adjustedScrollPosition = adjustScrollPositionWithinRange(adjustedScrollPosition);
if (adjustedScrollPosition != scrollPositionDouble() || scrollOriginChanged()) {
ScrollableArea::scrollToOffsetWithoutAnimation(toFloatPoint(adjustedScrollPosition));
resetScrollOriginChanged();
}
}
const int panIconSizeLength = 16;
IntRect FrameView::rectToCopyOnScroll() const
{
IntRect scrollViewRect = convertToContainingWindow(IntRect((shouldPlaceVerticalScrollbarOnLeft() && verticalScrollbar()) ? verticalScrollbar()->width() : 0, 0, visibleWidth(), visibleHeight()));
if (hasOverlayScrollbars()) {
int verticalScrollbarWidth = (verticalScrollbar() && !hasLayerForVerticalScrollbar()) ? verticalScrollbar()->width() : 0;
int horizontalScrollbarHeight = (horizontalScrollbar() && !hasLayerForHorizontalScrollbar()) ? horizontalScrollbar()->height() : 0;
scrollViewRect.setWidth(scrollViewRect.width() - verticalScrollbarWidth);
scrollViewRect.setHeight(scrollViewRect.height() - horizontalScrollbarHeight);
}
return scrollViewRect;
}
void FrameView::scrollContentsIfNeeded()
{
if (m_pendingScrollDelta.isZero())
return;
DoubleSize scrollDelta = m_pendingScrollDelta;
m_pendingScrollDelta = DoubleSize();
// FIXME: Change scrollContents() to take DoubleSize. crbug.com/414283.
scrollContents(flooredIntSize(scrollDelta));
}
void FrameView::scrollContents(const IntSize& scrollDelta)
{
HostWindow* window = hostWindow();
if (!window)
return;
IntRect clipRect = windowClipRect();
IntRect updateRect = clipRect;
updateRect.intersect(rectToCopyOnScroll());
if (m_shouldDrawPanScrollIcon) {
// FIXME: the pan icon is broken when accelerated compositing is on, since it will draw under the compositing layers.
// https://bugs.webkit.org/show_bug.cgi?id=47837
int panIconDirtySquareSizeLength = 2 * (panIconSizeLength + std::max(abs(scrollDelta.width()), abs(scrollDelta.height()))); // We only want to repaint what's necessary
IntPoint panIconDirtySquareLocation = IntPoint(m_panScrollIconPoint.x() - (panIconDirtySquareSizeLength / 2), m_panScrollIconPoint.y() - (panIconDirtySquareSizeLength / 2));
IntRect panScrollIconDirtyRect = IntRect(panIconDirtySquareLocation, IntSize(panIconDirtySquareSizeLength, panIconDirtySquareSizeLength));
panScrollIconDirtyRect.intersect(clipRect);
window->invalidateContentsAndRootView(panScrollIconDirtyRect);
}
if (!scrollContentsFastPath(-scrollDelta))
scrollContentsSlowPath(updateRect);
// Invalidate the overhang areas if they are visible.
updateOverhangAreas();
// This call will move children with native widgets (plugins) and invalidate them as well.
frameRectsChanged();
}
IntPoint FrameView::rootViewToContents(const IntPoint& rootViewPoint) const
{
IntPoint viewPoint = convertFromContainingWindow(rootViewPoint);
return viewPoint + scrollOffset();
}
IntPoint FrameView::contentsToRootView(const IntPoint& contentsPoint) const
{
IntPoint viewPoint = contentsPoint - scrollOffset();
return convertToContainingWindow(viewPoint);
}
IntRect FrameView::rootViewToContents(const IntRect& rootViewRect) const
{
IntRect viewRect = convertFromContainingWindow(rootViewRect);
viewRect.move(scrollOffset());
return viewRect;
}
IntRect FrameView::contentsToRootView(const IntRect& contentsRect) const
{
IntRect viewRect = contentsRect;
viewRect.move(-scrollOffset());
return convertToContainingWindow(viewRect);
}
IntPoint FrameView::windowToContents(const IntPoint& windowPoint) const
{
IntPoint viewPoint = convertFromContainingWindow(windowPoint);
return viewPoint + scrollOffset();
}
FloatPoint FrameView::windowToContents(const FloatPoint& windowPoint) const
{
FloatPoint viewPoint = convertFromContainingWindow(windowPoint);
return viewPoint + scrollOffset();
}
IntPoint FrameView::contentsToWindow(const IntPoint& contentsPoint) const
{
IntPoint viewPoint = contentsPoint - scrollOffset();
return convertToContainingWindow(viewPoint);
}
IntRect FrameView::windowToContents(const IntRect& windowRect) const
{
IntRect viewRect = convertFromContainingWindow(windowRect);
viewRect.move(scrollOffset());
return viewRect;
}
IntRect FrameView::contentsToWindow(const IntRect& contentsRect) const
{
IntRect viewRect = contentsRect;
viewRect.move(-scrollOffset());
return convertToContainingWindow(viewRect);
}
IntRect FrameView::contentsToScreen(const IntRect& rect) const
{
HostWindow* window = hostWindow();
if (!window)
return IntRect();
return window->rootViewToScreen(contentsToRootView(rect));
}
bool FrameView::containsScrollbarsAvoidingResizer() const
{
return !m_scrollbarsAvoidingResizer;
}
void FrameView::adjustScrollbarsAvoidingResizerCount(int overlapDelta)
{
int oldCount = m_scrollbarsAvoidingResizer;
m_scrollbarsAvoidingResizer += overlapDelta;
if (parent()) {
toFrameView(parent())->adjustScrollbarsAvoidingResizerCount(overlapDelta);
} else if (!scrollbarsSuppressed()) {
// If we went from n to 0 or from 0 to n and we're the outermost view,
// we need to invalidate the windowResizerRect(), since it will now need to paint
// differently.
if ((oldCount > 0 && m_scrollbarsAvoidingResizer == 0)
|| (oldCount == 0 && m_scrollbarsAvoidingResizer > 0))
invalidateRect(windowResizerRect());
}
}
void FrameView::setScrollbarsSuppressed(bool suppressed, bool repaintOnUnsuppress)
{
if (suppressed == m_scrollbarsSuppressed)
return;
m_scrollbarsSuppressed = suppressed;
if (repaintOnUnsuppress && !suppressed) {
if (m_horizontalScrollbar)
m_horizontalScrollbar->invalidate();
if (m_verticalScrollbar)
m_verticalScrollbar->invalidate();
// Invalidate the scroll corner too on unsuppress.
invalidateRect(scrollCornerRect());
}
}
Scrollbar* FrameView::scrollbarAtWindowPoint(const IntPoint& windowPoint)
{
IntPoint viewPoint = convertFromContainingWindow(windowPoint);
return scrollbarAtViewPoint(viewPoint);
}
Scrollbar* FrameView::scrollbarAtViewPoint(const IntPoint& viewPoint)
{
if (m_horizontalScrollbar && m_horizontalScrollbar->shouldParticipateInHitTesting() && m_horizontalScrollbar->frameRect().contains(viewPoint))
return m_horizontalScrollbar.get();
if (m_verticalScrollbar && m_verticalScrollbar->shouldParticipateInHitTesting() && m_verticalScrollbar->frameRect().contains(viewPoint))
return m_verticalScrollbar.get();
return 0;
}
static void positionScrollbarLayer(GraphicsLayer* graphicsLayer, Scrollbar* scrollbar)
{
if (!graphicsLayer || !scrollbar)
return;
IntRect scrollbarRect = scrollbar->frameRect();
graphicsLayer->setPosition(scrollbarRect.location());
if (scrollbarRect.size() == graphicsLayer->size())
return;
graphicsLayer->setSize(scrollbarRect.size());
if (graphicsLayer->hasContentsLayer()) {
graphicsLayer->setContentsRect(IntRect(0, 0, scrollbarRect.width(), scrollbarRect.height()));
return;
}
graphicsLayer->setDrawsContent(true);
graphicsLayer->setNeedsDisplay();
}
static void positionScrollCornerLayer(GraphicsLayer* graphicsLayer, const IntRect& cornerRect)
{
if (!graphicsLayer)
return;
graphicsLayer->setDrawsContent(!cornerRect.isEmpty());
graphicsLayer->setPosition(cornerRect.location());
if (cornerRect.size() != graphicsLayer->size())
graphicsLayer->setNeedsDisplay();
graphicsLayer->setSize(cornerRect.size());
}
void FrameView::positionScrollbarLayers()
{
positionScrollbarLayer(layerForHorizontalScrollbar(), horizontalScrollbar());
positionScrollbarLayer(layerForVerticalScrollbar(), verticalScrollbar());
positionScrollCornerLayer(layerForScrollCorner(), scrollCornerRect());
}
bool FrameView::userInputScrollable(ScrollbarOrientation orientation) const
{
Document* document = frame().document();
Element* fullscreenElement = Fullscreen::fullscreenElementFrom(*document);
if (fullscreenElement && fullscreenElement != document->documentElement())
return false;
ScrollbarMode mode = (orientation == HorizontalScrollbar) ?
m_horizontalScrollbarMode : m_verticalScrollbarMode;
return mode == ScrollbarAuto || mode == ScrollbarAlwaysOn;
}
bool FrameView::shouldPlaceVerticalScrollbarOnLeft() const
{
return false;
}
IntRect FrameView::scrollCornerRect() const
{
IntRect cornerRect;
if (hasOverlayScrollbars())
return cornerRect;
if (m_horizontalScrollbar && width() - m_horizontalScrollbar->width() > 0) {
cornerRect.unite(IntRect(shouldPlaceVerticalScrollbarOnLeft() ? 0 : m_horizontalScrollbar->width(),
height() - m_horizontalScrollbar->height(),
width() - m_horizontalScrollbar->width(),
m_horizontalScrollbar->height()));
}
if (m_verticalScrollbar && height() - m_verticalScrollbar->height() > 0) {
cornerRect.unite(IntRect(shouldPlaceVerticalScrollbarOnLeft() ? 0 : (width() - m_verticalScrollbar->width()),
m_verticalScrollbar->height(),
m_verticalScrollbar->width(),
height() - m_verticalScrollbar->height()));
}
return cornerRect;
}
bool FrameView::isScrollCornerVisible() const
{
return !scrollCornerRect().isEmpty();
}
void FrameView::invalidateScrollCornerRect(const IntRect& rect)
{
invalidateRect(rect);
}
void FrameView::paintPanScrollIcon(GraphicsContext* context)
{
DEFINE_STATIC_REF(Image, panScrollIcon, (Image::loadPlatformResource("panIcon")));
IntPoint iconGCPoint = m_panScrollIconPoint;
if (parent())
iconGCPoint = toFrameView(parent())->windowToContents(iconGCPoint);
context->drawImage(panScrollIcon, iconGCPoint);
}
void FrameView::paint(GraphicsContext* context, const IntRect& rect)
{
FramePainter(*this).paint(context, rect);
}
void FrameView::paintContents(GraphicsContext* context, const IntRect& damageRect)
{
FramePainter(*this).paintContents(context, damageRect);
}
void FrameView::calculateOverhangAreasForPainting(IntRect& horizontalOverhangRect, IntRect& verticalOverhangRect)
{
int verticalScrollbarWidth = (verticalScrollbar() && !verticalScrollbar()->isOverlayScrollbar())
? verticalScrollbar()->width() : 0;
int horizontalScrollbarHeight = (horizontalScrollbar() && !horizontalScrollbar()->isOverlayScrollbar())
? horizontalScrollbar()->height() : 0;
int physicalScrollY = scrollPosition().y() + scrollOrigin().y();
if (physicalScrollY < 0) {
horizontalOverhangRect = frameRect();
horizontalOverhangRect.setHeight(-physicalScrollY);
horizontalOverhangRect.setWidth(horizontalOverhangRect.width() - verticalScrollbarWidth);
} else if (physicalScrollY > 0 && contentsHeight() && physicalScrollY > contentsHeight() - visibleHeight()) {
int height = physicalScrollY - (contentsHeight() - visibleHeight());
horizontalOverhangRect = frameRect();
horizontalOverhangRect.setY(frameRect().maxY() - height - horizontalScrollbarHeight);
horizontalOverhangRect.setHeight(height);
horizontalOverhangRect.setWidth(horizontalOverhangRect.width() - verticalScrollbarWidth);
}
int physicalScrollX = scrollPosition().x() + scrollOrigin().x();
if (physicalScrollX < 0) {
verticalOverhangRect.setWidth(-physicalScrollX);
verticalOverhangRect.setHeight(frameRect().height() - horizontalOverhangRect.height() - horizontalScrollbarHeight);
verticalOverhangRect.setX(frameRect().x());
if (horizontalOverhangRect.y() == frameRect().y())
verticalOverhangRect.setY(frameRect().y() + horizontalOverhangRect.height());
else
verticalOverhangRect.setY(frameRect().y());
} else if (physicalScrollX > 0 && contentsWidth() && physicalScrollX > contentsWidth() - visibleWidth()) {
int width = physicalScrollX - (contentsWidth() - visibleWidth());
verticalOverhangRect.setWidth(width);
verticalOverhangRect.setHeight(frameRect().height() - horizontalOverhangRect.height() - horizontalScrollbarHeight);
verticalOverhangRect.setX(frameRect().maxX() - width - verticalScrollbarWidth);
if (horizontalOverhangRect.y() == frameRect().y())
verticalOverhangRect.setY(frameRect().y() + horizontalOverhangRect.height());
else
verticalOverhangRect.setY(frameRect().y());
}
}
void FrameView::updateOverhangAreas()
{
HostWindow* window = hostWindow();
if (!window)
return;
IntRect horizontalOverhangRect;
IntRect verticalOverhangRect;
calculateOverhangAreasForPainting(horizontalOverhangRect, verticalOverhangRect);
if (!horizontalOverhangRect.isEmpty())
window->invalidateContentsAndRootView(horizontalOverhangRect);
if (!verticalOverhangRect.isEmpty())
window->invalidateContentsAndRootView(verticalOverhangRect);
}
bool FrameView::isPointInScrollbarCorner(const IntPoint& windowPoint)
{
if (!scrollbarCornerPresent())
return false;
IntPoint viewPoint = convertFromContainingWindow(windowPoint);
if (m_horizontalScrollbar) {
int horizontalScrollbarYMin = m_horizontalScrollbar->frameRect().y();
int horizontalScrollbarYMax = m_horizontalScrollbar->frameRect().y() + m_horizontalScrollbar->frameRect().height();
int horizontalScrollbarXMin = m_horizontalScrollbar->frameRect().x() + m_horizontalScrollbar->frameRect().width();
return viewPoint.y() > horizontalScrollbarYMin && viewPoint.y() < horizontalScrollbarYMax && viewPoint.x() > horizontalScrollbarXMin;
}
int verticalScrollbarXMin = m_verticalScrollbar->frameRect().x();
int verticalScrollbarXMax = m_verticalScrollbar->frameRect().x() + m_verticalScrollbar->frameRect().width();
int verticalScrollbarYMin = m_verticalScrollbar->frameRect().y() + m_verticalScrollbar->frameRect().height();
return viewPoint.x() > verticalScrollbarXMin && viewPoint.x() < verticalScrollbarXMax && viewPoint.y() > verticalScrollbarYMin;
}
bool FrameView::scrollbarCornerPresent() const
{
return (m_horizontalScrollbar && width() - m_horizontalScrollbar->width() > 0)
|| (m_verticalScrollbar && height() - m_verticalScrollbar->height() > 0);
}
IntRect FrameView::convertFromScrollbarToContainingView(const Scrollbar* scrollbar, const IntRect& localRect) const
{
// Scrollbars won't be transformed within us
IntRect newRect = localRect;
newRect.moveBy(scrollbar->location());
return newRect;
}
IntRect FrameView::convertFromContainingViewToScrollbar(const Scrollbar* scrollbar, const IntRect& parentRect) const
{
IntRect newRect = parentRect;
// Scrollbars won't be transformed within us
newRect.moveBy(-scrollbar->location());
return newRect;
}
// FIXME: test these on windows
IntPoint FrameView::convertFromScrollbarToContainingView(const Scrollbar* scrollbar, const IntPoint& localPoint) const
{
// Scrollbars won't be transformed within us
IntPoint newPoint = localPoint;
newPoint.moveBy(scrollbar->location());
return newPoint;
}
IntPoint FrameView::convertFromContainingViewToScrollbar(const Scrollbar* scrollbar, const IntPoint& parentPoint) const
{
IntPoint newPoint = parentPoint;
// Scrollbars won't be transformed within us
newPoint.moveBy(-scrollbar->location());
return newPoint;
}
void FrameView::setParentVisible(bool visible)
{
if (isParentVisible() == visible)
return;
Widget::setParentVisible(visible);
if (!isSelfVisible())
return;
for (const auto& child : m_children)
child->setParentVisible(visible);
}
void FrameView::show()
{
if (!isSelfVisible()) {
setSelfVisible(true);
if (isParentVisible()) {
for (const auto& child : m_children)
child->setParentVisible(true);
}
}
Widget::show();
}
void FrameView::hide()
{
if (isSelfVisible()) {
if (isParentVisible()) {
for (const auto& child : m_children)
child->setParentVisible(false);
}
setSelfVisible(false);
}
Widget::hide();
}
void FrameView::addPanScrollIcon(const IntPoint& iconPosition)
{
HostWindow* window = hostWindow();
if (!window)
return;
m_shouldDrawPanScrollIcon = true;
m_panScrollIconPoint = IntPoint(iconPosition.x() - panIconSizeLength / 2 , iconPosition.y() - panIconSizeLength / 2);
window->invalidateContentsAndRootView(IntRect(m_panScrollIconPoint, IntSize(panIconSizeLength, panIconSizeLength)));
}
void FrameView::removePanScrollIcon()
{
HostWindow* window = hostWindow();
if (!window)
return;
m_shouldDrawPanScrollIcon = false;
window->invalidateContentsAndRootView(IntRect(m_panScrollIconPoint, IntSize(panIconSizeLength, panIconSizeLength)));
}
void FrameView::setScrollOrigin(const IntPoint& origin, bool updatePositionAtAll, bool updatePositionSynchronously)
{
if (scrollOrigin() == origin)
return;
ScrollableArea::setScrollOrigin(origin);
// Update if the scroll origin changes, since our position will be different if the content size did not change.
if (updatePositionAtAll && updatePositionSynchronously)
updateScrollbars(scrollOffsetDouble());
}
} // namespace blink