TiledCoreAnimationDrawingArea.mm [plain text]
/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
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* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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#import "config.h"
#import "TiledCoreAnimationDrawingArea.h"
#if !PLATFORM(IOS)
#import "ColorSpaceData.h"
#import "DrawingAreaProxyMessages.h"
#import "LayerHostingContext.h"
#import "LayerTreeContext.h"
#import "ViewGestureControllerMessages.h"
#import "WebFrame.h"
#import "WebPage.h"
#import "WebPageCreationParameters.h"
#import "WebPageProxyMessages.h"
#import "WebProcess.h"
#import <QuartzCore/QuartzCore.h>
#import <WebCore/FrameView.h>
#import <WebCore/GraphicsContext.h>
#import <WebCore/GraphicsLayerCA.h>
#import <WebCore/MainFrame.h>
#import <WebCore/Page.h>
#import <WebCore/PlatformCAAnimationMac.h>
#import <WebCore/RenderLayerBacking.h>
#import <WebCore/RenderLayerCompositor.h>
#import <WebCore/RenderView.h>
#import <WebCore/ScrollbarTheme.h>
#import <WebCore/Settings.h>
#import <WebCore/TiledBacking.h>
#import <wtf/MainThread.h>
#if ENABLE(ASYNC_SCROLLING)
#import <WebCore/AsyncScrollingCoordinator.h>
#import <WebCore/ScrollingThread.h>
#import <WebCore/ScrollingTree.h>
#endif
@interface CATransaction (Details)
+ (void)synchronize;
@end
using namespace WebCore;
namespace WebKit {
TiledCoreAnimationDrawingArea::TiledCoreAnimationDrawingArea(WebPage& webPage, const WebPageCreationParameters& parameters)
: DrawingArea(DrawingAreaTypeTiledCoreAnimation, webPage)
, m_layerTreeStateIsFrozen(false)
, m_layerFlushScheduler(this)
, m_isPaintingSuspended(!(parameters.viewState & ViewState::IsVisible))
, m_exposedRect(FloatRect::infiniteRect())
, m_scrolledExposedRect(FloatRect::infiniteRect())
, m_transientZoomScale(1)
, m_sendDidUpdateViewStateTimer(RunLoop::main(), this, &TiledCoreAnimationDrawingArea::didUpdateViewStateTimerFired)
{
m_webPage.corePage()->settings().setForceCompositingMode(true);
m_hostingLayer = [CALayer layer];
[m_hostingLayer setFrame:m_webPage.bounds()];
[m_hostingLayer setOpaque:YES];
[m_hostingLayer setGeometryFlipped:YES];
updateLayerHostingContext();
setColorSpace(parameters.colorSpace);
LayerTreeContext layerTreeContext;
layerTreeContext.contextID = m_layerHostingContext->contextID();
m_webPage.send(Messages::DrawingAreaProxy::EnterAcceleratedCompositingMode(0, layerTreeContext));
}
TiledCoreAnimationDrawingArea::~TiledCoreAnimationDrawingArea()
{
m_layerFlushScheduler.invalidate();
}
void TiledCoreAnimationDrawingArea::setNeedsDisplay()
{
}
void TiledCoreAnimationDrawingArea::setNeedsDisplayInRect(const IntRect& rect)
{
}
void TiledCoreAnimationDrawingArea::scroll(const IntRect& scrollRect, const IntSize& scrollDelta)
{
updateScrolledExposedRect();
}
void TiledCoreAnimationDrawingArea::setRootCompositingLayer(GraphicsLayer* graphicsLayer)
{
CALayer *rootLayer = graphicsLayer ? graphicsLayer->platformLayer() : nil;
if (m_layerTreeStateIsFrozen) {
m_pendingRootLayer = rootLayer;
return;
}
setRootCompositingLayer(rootLayer);
}
void TiledCoreAnimationDrawingArea::forceRepaint()
{
if (m_layerTreeStateIsFrozen)
return;
for (Frame* frame = &m_webPage.corePage()->mainFrame(); frame; frame = frame->tree().traverseNext()) {
FrameView* frameView = frame->view();
if (!frameView || !frameView->tiledBacking())
continue;
frameView->tiledBacking()->forceRepaint();
}
flushLayers();
[CATransaction flush];
[CATransaction synchronize];
}
bool TiledCoreAnimationDrawingArea::forceRepaintAsync(uint64_t callbackID)
{
if (m_layerTreeStateIsFrozen)
return false;
dispatchAfterEnsuringUpdatedScrollPosition([this, callbackID] {
m_webPage.drawingArea()->forceRepaint();
m_webPage.send(Messages::WebPageProxy::VoidCallback(callbackID));
});
return true;
}
void TiledCoreAnimationDrawingArea::setLayerTreeStateIsFrozen(bool layerTreeStateIsFrozen)
{
if (m_layerTreeStateIsFrozen == layerTreeStateIsFrozen)
return;
m_layerTreeStateIsFrozen = layerTreeStateIsFrozen;
if (m_layerTreeStateIsFrozen)
m_layerFlushScheduler.suspend();
else
m_layerFlushScheduler.resume();
}
bool TiledCoreAnimationDrawingArea::layerTreeStateIsFrozen() const
{
return m_layerTreeStateIsFrozen;
}
void TiledCoreAnimationDrawingArea::scheduleCompositingLayerFlush()
{
m_layerFlushScheduler.schedule();
}
void TiledCoreAnimationDrawingArea::scheduleCompositingLayerFlushImmediately()
{
scheduleCompositingLayerFlush();
}
void TiledCoreAnimationDrawingArea::updatePreferences(const WebPreferencesStore&)
{
Settings& settings = m_webPage.corePage()->settings();
#if ENABLE(ASYNC_SCROLLING)
if (AsyncScrollingCoordinator* scrollingCoordinator = toAsyncScrollingCoordinator(m_webPage.corePage()->scrollingCoordinator())) {
bool scrollingPerformanceLoggingEnabled = m_webPage.scrollingPerformanceLoggingEnabled();
ScrollingThread::dispatch(bind(&ScrollingTree::setScrollingPerformanceLoggingEnabled, scrollingCoordinator->scrollingTree(), scrollingPerformanceLoggingEnabled));
}
#endif
// Fixed position elements need to be composited and create stacking contexts
// in order to be scrolled by the ScrollingCoordinator. We also want to keep
// Settings:setFixedPositionCreatesStackingContext() enabled for iOS. See
// <rdar://problem/9813262> for more details.
settings.setAcceleratedCompositingForFixedPositionEnabled(true);
settings.setFixedPositionCreatesStackingContext(true);
bool showTiledScrollingIndicator = settings.showTiledScrollingIndicator();
if (showTiledScrollingIndicator == !!m_debugInfoLayer)
return;
updateDebugInfoLayer(showTiledScrollingIndicator);
}
void TiledCoreAnimationDrawingArea::mainFrameContentSizeChanged(const IntSize& size)
{
m_webPage.pageOverlayController().didChangeDocumentSize();
}
void TiledCoreAnimationDrawingArea::updateIntrinsicContentSizeIfNeeded()
{
if (!m_webPage.minimumLayoutSize().width())
return;
FrameView* frameView = m_webPage.mainFrameView();
if (!frameView)
return;
if (frameView->needsLayout())
return;
IntSize contentSize = frameView->autoSizingIntrinsicContentSize();
if (m_lastSentIntrinsicContentSize == contentSize)
return;
m_lastSentIntrinsicContentSize = contentSize;
m_webPage.send(Messages::DrawingAreaProxy::IntrinsicContentSizeDidChange(contentSize));
}
void TiledCoreAnimationDrawingArea::dispatchAfterEnsuringUpdatedScrollPosition(std::function<void ()> function)
{
#if ENABLE(ASYNC_SCROLLING)
if (!m_webPage.corePage()->scrollingCoordinator()) {
function();
return;
}
m_webPage.ref();
m_webPage.corePage()->scrollingCoordinator()->commitTreeStateIfNeeded();
if (!m_layerTreeStateIsFrozen)
m_layerFlushScheduler.suspend();
// It is possible for the drawing area to be destroyed before the bound block
// is invoked, so grab a reference to the web page here so we can access the drawing area through it.
// (The web page is already kept alive by dispatchAfterEnsuringUpdatedScrollPosition).
WebPage* webPage = &m_webPage;
ScrollingThread::dispatchBarrier([this, webPage, function] {
DrawingArea* drawingArea = webPage->drawingArea();
if (!drawingArea)
return;
function();
if (!m_layerTreeStateIsFrozen)
m_layerFlushScheduler.resume();
webPage->deref();
});
#else
function();
#endif
}
bool TiledCoreAnimationDrawingArea::flushLayers()
{
ASSERT(!m_layerTreeStateIsFrozen);
// This gets called outside of the normal event loop so wrap in an autorelease pool
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
m_webPage.layoutIfNeeded();
updateIntrinsicContentSizeIfNeeded();
if (m_pendingRootLayer) {
setRootCompositingLayer(m_pendingRootLayer.get());
m_pendingRootLayer = nullptr;
}
FloatRect visibleRect = [m_hostingLayer frame];
visibleRect.intersect(m_scrolledExposedRect);
m_webPage.pageOverlayController().flushPageOverlayLayers(visibleRect);
bool returnValue = m_webPage.mainFrameView()->flushCompositingStateIncludingSubframes();
#if ENABLE(ASYNC_SCROLLING)
if (ScrollingCoordinator* scrollingCoordinator = m_webPage.corePage()->scrollingCoordinator())
scrollingCoordinator->commitTreeStateIfNeeded();
#endif
// If we have an active transient zoom, we want the zoom to win over any changes
// that WebCore makes to the relevant layers, so re-apply our changes after flushing.
if (m_transientZoomScale != 1)
applyTransientZoomToLayers(m_transientZoomScale, m_transientZoomOrigin);
[pool drain];
return returnValue;
}
void TiledCoreAnimationDrawingArea::viewStateDidChange(ViewState::Flags changed, bool wantsDidUpdateViewState)
{
if (changed & ViewState::IsVisible) {
if (m_webPage.isVisible())
resumePainting();
else
suspendPainting();
}
if (wantsDidUpdateViewState)
m_sendDidUpdateViewStateTimer.startOneShot(0);
}
void TiledCoreAnimationDrawingArea::didUpdateViewStateTimerFired()
{
[CATransaction flush];
m_webPage.send(Messages::WebPageProxy::DidUpdateViewState());
}
void TiledCoreAnimationDrawingArea::suspendPainting()
{
ASSERT(!m_isPaintingSuspended);
m_isPaintingSuspended = true;
[m_hostingLayer setValue:@YES forKey:@"NSCAViewRenderPaused"];
[[NSNotificationCenter defaultCenter] postNotificationName:@"NSCAViewRenderDidPauseNotification" object:nil userInfo:[NSDictionary dictionaryWithObject:m_hostingLayer.get() forKey:@"layer"]];
}
void TiledCoreAnimationDrawingArea::resumePainting()
{
if (!m_isPaintingSuspended) {
// FIXME: We can get a call to resumePainting when painting is not suspended.
// This happens when sending a synchronous message to create a new page. See <rdar://problem/8976531>.
return;
}
m_isPaintingSuspended = false;
[m_hostingLayer setValue:@NO forKey:@"NSCAViewRenderPaused"];
[[NSNotificationCenter defaultCenter] postNotificationName:@"NSCAViewRenderDidResumeNotification" object:nil userInfo:[NSDictionary dictionaryWithObject:m_hostingLayer.get() forKey:@"layer"]];
}
void TiledCoreAnimationDrawingArea::setExposedRect(const FloatRect& exposedRect)
{
m_exposedRect = exposedRect;
updateScrolledExposedRect();
}
void TiledCoreAnimationDrawingArea::updateScrolledExposedRect()
{
FrameView* frameView = m_webPage.mainFrameView();
if (!frameView)
return;
m_scrolledExposedRect = m_exposedRect;
#if !PLATFORM(IOS)
if (!m_exposedRect.isInfinite()) {
IntPoint scrollPositionWithOrigin = frameView->scrollPosition() + toIntSize(frameView->scrollOrigin());
m_scrolledExposedRect.moveBy(scrollPositionWithOrigin);
}
#endif
frameView->setExposedRect(m_scrolledExposedRect);
m_webPage.pageOverlayController().didChangeExposedRect();
}
void TiledCoreAnimationDrawingArea::updateGeometry(const IntSize& viewSize, const IntSize& layerPosition)
{
m_inUpdateGeometry = true;
IntSize size = viewSize;
IntSize contentSize = IntSize(-1, -1);
if (!m_webPage.minimumLayoutSize().width() || m_webPage.autoSizingShouldExpandToViewHeight())
m_webPage.setSize(size);
FrameView* frameView = m_webPage.mainFrameView();
if (m_webPage.autoSizingShouldExpandToViewHeight() && frameView)
frameView->setAutoSizeFixedMinimumHeight(viewSize.height());
m_webPage.layoutIfNeeded();
if (m_webPage.minimumLayoutSize().width() && frameView) {
contentSize = frameView->autoSizingIntrinsicContentSize();
size = contentSize;
}
if (!m_layerTreeStateIsFrozen)
flushLayers();
[CATransaction begin];
[CATransaction setDisableActions:YES];
[m_hostingLayer setFrame:CGRectMake(layerPosition.width(), layerPosition.height(), viewSize.width(), viewSize.height())];
[CATransaction commit];
[CATransaction flush];
[CATransaction synchronize];
m_webPage.send(Messages::DrawingAreaProxy::DidUpdateGeometry());
m_inUpdateGeometry = false;
}
void TiledCoreAnimationDrawingArea::setDeviceScaleFactor(float deviceScaleFactor)
{
m_webPage.setDeviceScaleFactor(deviceScaleFactor);
}
void TiledCoreAnimationDrawingArea::setLayerHostingMode(LayerHostingMode)
{
updateLayerHostingContext();
// Finally, inform the UIProcess that the context has changed.
LayerTreeContext layerTreeContext;
layerTreeContext.contextID = m_layerHostingContext->contextID();
m_webPage.send(Messages::DrawingAreaProxy::UpdateAcceleratedCompositingMode(0, layerTreeContext));
}
void TiledCoreAnimationDrawingArea::setColorSpace(const ColorSpaceData& colorSpace)
{
m_layerHostingContext->setColorSpace(colorSpace.cgColorSpace.get());
}
void TiledCoreAnimationDrawingArea::updateLayerHostingContext()
{
RetainPtr<CGColorSpaceRef> colorSpace;
// Invalidate the old context.
if (m_layerHostingContext) {
colorSpace = m_layerHostingContext->colorSpace();
m_layerHostingContext->invalidate();
m_layerHostingContext = nullptr;
}
// Create a new context and set it up.
switch (m_webPage.layerHostingMode()) {
case LayerHostingMode::InProcess:
m_layerHostingContext = LayerHostingContext::createForPort(WebProcess::shared().compositingRenderServerPort());
break;
#if HAVE(OUT_OF_PROCESS_LAYER_HOSTING)
case LayerHostingMode::OutOfProcess:
m_layerHostingContext = LayerHostingContext::createForExternalHostingProcess();
break;
#endif
}
if (m_rootLayer)
m_layerHostingContext->setRootLayer(m_hostingLayer.get());
if (colorSpace)
m_layerHostingContext->setColorSpace(colorSpace.get());
}
void TiledCoreAnimationDrawingArea::setRootCompositingLayer(CALayer *layer)
{
ASSERT(!m_layerTreeStateIsFrozen);
[CATransaction begin];
[CATransaction setDisableActions:YES];
[m_hostingLayer setSublayers:layer ? @[ layer, m_webPage.pageOverlayController().viewOverlayRootLayer()->platformLayer() ] : @[ ]];
bool hadRootLayer = !!m_rootLayer;
m_rootLayer = layer;
[m_rootLayer setSublayerTransform:m_transform];
if (hadRootLayer != !!layer)
m_layerHostingContext->setRootLayer(layer ? m_hostingLayer.get() : 0);
updateDebugInfoLayer(m_webPage.corePage()->settings().showTiledScrollingIndicator());
[CATransaction commit];
}
TiledBacking* TiledCoreAnimationDrawingArea::mainFrameTiledBacking() const
{
FrameView* frameView = m_webPage.mainFrameView();
return frameView ? frameView->tiledBacking() : nullptr;
}
void TiledCoreAnimationDrawingArea::updateDebugInfoLayer(bool showLayer)
{
if (showLayer) {
if (TiledBacking* tiledBacking = mainFrameTiledBacking()) {
if (PlatformCALayer* indicatorLayer = tiledBacking->tiledScrollingIndicatorLayer())
m_debugInfoLayer = indicatorLayer->platformLayer();
}
if (m_debugInfoLayer) {
#ifndef NDEBUG
[m_debugInfoLayer setName:@"Debug Info"];
#endif
[m_hostingLayer addSublayer:m_debugInfoLayer.get()];
}
} else if (m_debugInfoLayer) {
[m_debugInfoLayer removeFromSuperlayer];
m_debugInfoLayer = nullptr;
}
}
bool TiledCoreAnimationDrawingArea::shouldUseTiledBackingForFrameView(const FrameView* frameView)
{
return frameView && frameView->frame().isMainFrame();
}
PlatformCALayer* TiledCoreAnimationDrawingArea::layerForTransientZoom() const
{
RenderLayerBacking* renderViewBacking = m_webPage.mainFrameView()->renderView()->layer()->backing();
if (GraphicsLayer* contentsContainmentLayer = renderViewBacking->contentsContainmentLayer())
return toGraphicsLayerCA(contentsContainmentLayer)->platformCALayer();
return toGraphicsLayerCA(renderViewBacking->graphicsLayer())->platformCALayer();
}
PlatformCALayer* TiledCoreAnimationDrawingArea::shadowLayerForTransientZoom() const
{
RenderLayerCompositor& renderLayerCompositor = m_webPage.mainFrameView()->renderView()->compositor();
if (GraphicsLayer* shadowGraphicsLayer = renderLayerCompositor.layerForContentShadow())
return toGraphicsLayerCA(shadowGraphicsLayer)->platformCALayer();
return nullptr;
}
static FloatPoint shadowLayerPositionForFrame(FrameView& frameView, FloatPoint origin)
{
FloatPoint position = frameView.renderView()->documentRect().location() + FloatPoint(0, FrameView::yPositionForRootContentLayer(frameView.scrollPosition(), frameView.topContentInset(), frameView.headerHeight()));
return position + origin.expandedTo(FloatPoint());
}
static FloatRect shadowLayerBoundsForFrame(FrameView& frameView, float transientScale)
{
FloatRect clipLayerFrame(frameView.renderView()->documentRect());
FloatRect shadowLayerFrame = clipLayerFrame;
shadowLayerFrame.scale(transientScale / frameView.frame().page()->pageScaleFactor());
shadowLayerFrame.intersect(clipLayerFrame);
return shadowLayerFrame;
}
void TiledCoreAnimationDrawingArea::applyTransientZoomToLayers(double scale, FloatPoint origin)
{
// FIXME: Scrollbars should stay in-place and change height while zooming.
if (!m_hostingLayer)
return;
TransformationMatrix transform;
transform.translate(origin.x(), origin.y());
transform.scale(scale);
PlatformCALayer* zoomLayer = layerForTransientZoom();
zoomLayer->setTransform(transform);
zoomLayer->setAnchorPoint(FloatPoint3D());
zoomLayer->setPosition(FloatPoint3D());
if (PlatformCALayer* shadowLayer = shadowLayerForTransientZoom()) {
FrameView& frameView = *m_webPage.mainFrameView();
shadowLayer->setBounds(shadowLayerBoundsForFrame(frameView, scale));
shadowLayer->setPosition(shadowLayerPositionForFrame(frameView, origin));
}
m_transientZoomScale = scale;
m_transientZoomOrigin = origin;
}
void TiledCoreAnimationDrawingArea::adjustTransientZoom(double scale, FloatPoint origin)
{
applyTransientZoomToLayers(scale, origin);
double currentPageScale = m_webPage.pageScaleFactor();
if (scale > currentPageScale)
return;
FrameView* frameView = m_webPage.mainFrameView();
FloatRect tileCoverageRect = frameView->visibleContentRectIncludingScrollbars();
tileCoverageRect.moveBy(-origin);
tileCoverageRect.scale(currentPageScale / scale);
frameView->renderView()->layer()->backing()->tiledBacking()->prepopulateRect(tileCoverageRect);
}
static RetainPtr<CABasicAnimation> transientZoomSnapAnimationForKeyPath(String keyPath)
{
const float transientZoomSnapBackDuration = 0.25;
RetainPtr<CABasicAnimation> animation = [CABasicAnimation animationWithKeyPath:keyPath];
[animation setDuration:transientZoomSnapBackDuration];
[animation setFillMode:kCAFillModeForwards];
[animation setRemovedOnCompletion:false];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
return animation;
}
void TiledCoreAnimationDrawingArea::commitTransientZoom(double scale, FloatPoint origin)
{
FrameView& frameView = *m_webPage.mainFrameView();
FloatRect visibleContentRect = frameView.visibleContentRectIncludingScrollbars();
FloatPoint constrainedOrigin = visibleContentRect.location();
constrainedOrigin.moveBy(-origin);
IntSize scaledTotalContentsSize = frameView.totalContentsSize();
scaledTotalContentsSize.scale(scale / m_webPage.pageScaleFactor());
// Scaling may have exposed the overhang area, so we need to constrain the final
// layer position exactly like scrolling will once it's committed, to ensure that
// scrolling doesn't make the view jump.
constrainedOrigin = ScrollableArea::constrainScrollPositionForOverhang(roundedIntRect(visibleContentRect), scaledTotalContentsSize, roundedIntPoint(constrainedOrigin), frameView.scrollOrigin(), frameView.headerHeight(), frameView.footerHeight());
constrainedOrigin.moveBy(-visibleContentRect.location());
constrainedOrigin = -constrainedOrigin;
if (m_transientZoomScale == scale && roundedIntPoint(m_transientZoomOrigin) == roundedIntPoint(constrainedOrigin)) {
// We're already at the right scale and position, so we don't need to animate.
applyTransientZoomToPage(scale, origin);
return;
}
TransformationMatrix transform;
transform.translate(constrainedOrigin.x(), constrainedOrigin.y());
transform.scale(scale);
RetainPtr<CABasicAnimation> renderViewAnimationCA = transientZoomSnapAnimationForKeyPath("transform");
RefPtr<PlatformCAAnimation> renderViewAnimation = PlatformCAAnimationMac::create(renderViewAnimationCA.get());
renderViewAnimation->setToValue(transform);
RetainPtr<CALayer> shadowCALayer;
if (PlatformCALayer* shadowLayer = shadowLayerForTransientZoom())
shadowCALayer = shadowLayer->platformLayer();
PlatformCALayer* zoomLayer = layerForTransientZoom();
[CATransaction begin];
[CATransaction setCompletionBlock:^(void) {
zoomLayer->removeAnimationForKey("transientZoomCommit");
if (shadowCALayer)
[shadowCALayer removeAllAnimations];
applyTransientZoomToPage(scale, origin);
}];
zoomLayer->addAnimationForKey("transientZoomCommit", renderViewAnimation.get());
if (shadowCALayer) {
FloatRect shadowBounds = shadowLayerBoundsForFrame(frameView, scale);
RetainPtr<CGPathRef> shadowPath = adoptCF(CGPathCreateWithRect(shadowBounds, NULL)).get();
RetainPtr<CABasicAnimation> shadowBoundsAnimation = transientZoomSnapAnimationForKeyPath("bounds");
[shadowBoundsAnimation setToValue:[NSValue valueWithRect:shadowBounds]];
RetainPtr<CABasicAnimation> shadowPositionAnimation = transientZoomSnapAnimationForKeyPath("position");
[shadowPositionAnimation setToValue:[NSValue valueWithPoint:shadowLayerPositionForFrame(frameView, constrainedOrigin)]];
RetainPtr<CABasicAnimation> shadowPathAnimation = transientZoomSnapAnimationForKeyPath("shadowPath");
[shadowPathAnimation setToValue:(id)shadowPath.get()];
[shadowCALayer addAnimation:shadowBoundsAnimation.get() forKey:@"transientZoomCommitShadowBounds"];
[shadowCALayer addAnimation:shadowPositionAnimation.get() forKey:@"transientZoomCommitShadowPosition"];
[shadowCALayer addAnimation:shadowPathAnimation.get() forKey:@"transientZoomCommitShadowPath"];
}
[CATransaction commit];
}
void TiledCoreAnimationDrawingArea::applyTransientZoomToPage(double scale, FloatPoint origin)
{
// If the page scale is already the target scale, setPageScaleFactor() will short-circuit
// and not apply the transform, so we can't depend on it to do so.
TransformationMatrix finalTransform;
finalTransform.scale(scale);
layerForTransientZoom()->setTransform(finalTransform);
FrameView& frameView = *m_webPage.mainFrameView();
if (PlatformCALayer* shadowLayer = shadowLayerForTransientZoom()) {
shadowLayer->setBounds(shadowLayerBoundsForFrame(frameView, 1));
shadowLayer->setPosition(shadowLayerPositionForFrame(frameView, FloatPoint()));
}
FloatPoint unscrolledOrigin(origin);
FloatRect unobscuredContentRect = frameView.unobscuredContentRectIncludingScrollbars();
unscrolledOrigin.moveBy(-unobscuredContentRect.location());
m_webPage.scalePage(scale, roundedIntPoint(-unscrolledOrigin));
m_transientZoomScale = 1;
flushLayers();
}
void TiledCoreAnimationDrawingArea::setRootLayerTransform(const TransformationMatrix& transform)
{
m_transform = transform;
[m_rootLayer setSublayerTransform:transform];
}
} // namespace WebKit
#endif // !PLATFORM(IOS)