LayerTreeHostQt.cpp [plain text]
#include "config.h"
#include "LayerTreeHostQt.h"
#include "DrawingAreaImpl.h"
#include "GraphicsContext.h"
#include "LayerTreeHostProxyMessages.h"
#include "MessageID.h"
#include "SurfaceUpdateInfo.h"
#include "WebCoreArgumentCoders.h"
#include "WebGraphicsLayer.h"
#include "WebPage.h"
#include <WebCore/Frame.h>
#include <WebCore/FrameView.h>
#include <WebCore/Page.h>
#include <WebCore/RenderLayer.h>
#include <WebCore/RenderLayerBacking.h>
#include <WebCore/RenderLayerCompositor.h>
#include <WebCore/RenderView.h>
#include <WebCore/Settings.h>
using namespace WebCore;
namespace WebKit {
PassRefPtr<LayerTreeHostQt> LayerTreeHostQt::create(WebPage* webPage)
{
return adoptRef(new LayerTreeHostQt(webPage));
}
LayerTreeHostQt::~LayerTreeHostQt()
{
HashSet<WebCore::WebGraphicsLayer*> registeredLayers;
registeredLayers.swap(m_registeredLayers);
HashSet<WebCore::WebGraphicsLayer*>::iterator end = registeredLayers.end();
for (HashSet<WebCore::WebGraphicsLayer*>::iterator it = registeredLayers.begin(); it != end; ++it)
(*it)->setWebGraphicsLayerClient(0);
}
LayerTreeHostQt::LayerTreeHostQt(WebPage* webPage)
: LayerTreeHost(webPage)
, m_notifyAfterScheduledLayerFlush(false)
, m_isValid(true)
, m_waitingForUIProcess(false)
, m_isSuspended(false)
, m_contentsScale(1)
, m_shouldSendScrollPositionUpdate(true)
, m_shouldSyncFrame(false)
, m_shouldSyncRootLayer(true)
, m_layerFlushTimer(this, &LayerTreeHostQt::layerFlushTimerFired)
, m_layerFlushSchedulingEnabled(true)
{
m_rootLayer = GraphicsLayer::create(this);
WebGraphicsLayer* webRootLayer = toWebGraphicsLayer(m_rootLayer.get());
webRootLayer->setRootLayer(true);
#ifndef NDEBUG
m_rootLayer->setName("LayerTreeHostQt root layer");
#endif
m_rootLayer->setDrawsContent(false);
m_rootLayer->setSize(m_webPage->size());
m_layerTreeContext.webLayerID = toWebGraphicsLayer(webRootLayer)->id();
m_nonCompositedContentLayer = GraphicsLayer::create(this);
toWebGraphicsLayer(m_rootLayer.get())->setWebGraphicsLayerClient(this);
#ifndef NDEBUG
m_nonCompositedContentLayer->setName("LayerTreeHostQt non-composited content");
#endif
m_nonCompositedContentLayer->setDrawsContent(true);
m_nonCompositedContentLayer->setSize(m_webPage->size());
m_rootLayer->addChild(m_nonCompositedContentLayer.get());
if (m_webPage->hasPageOverlay())
createPageOverlayLayer();
scheduleLayerFlush();
}
void LayerTreeHostQt::setLayerFlushSchedulingEnabled(bool layerFlushingEnabled)
{
if (m_layerFlushSchedulingEnabled == layerFlushingEnabled)
return;
m_layerFlushSchedulingEnabled = layerFlushingEnabled;
if (m_layerFlushSchedulingEnabled) {
scheduleLayerFlush();
return;
}
cancelPendingLayerFlush();
}
void LayerTreeHostQt::scheduleLayerFlush()
{
if (!m_layerFlushSchedulingEnabled)
return;
if (!m_layerFlushTimer.isActive())
m_layerFlushTimer.startOneShot(0);
}
void LayerTreeHostQt::cancelPendingLayerFlush()
{
m_layerFlushTimer.stop();
}
void LayerTreeHostQt::setShouldNotifyAfterNextScheduledLayerFlush(bool notifyAfterScheduledLayerFlush)
{
m_notifyAfterScheduledLayerFlush = notifyAfterScheduledLayerFlush;
}
void LayerTreeHostQt::setRootCompositingLayer(WebCore::GraphicsLayer* graphicsLayer)
{
m_nonCompositedContentLayer->removeAllChildren();
m_nonCompositedContentLayer->setContentsOpaque(m_webPage->drawsBackground() && !m_webPage->drawsTransparentBackground());
if (graphicsLayer)
m_nonCompositedContentLayer->addChild(graphicsLayer);
}
void LayerTreeHostQt::invalidate()
{
cancelPendingLayerFlush();
ASSERT(m_isValid);
m_rootLayer = nullptr;
m_isValid = false;
}
void LayerTreeHostQt::setNonCompositedContentsNeedDisplay(const WebCore::IntRect& rect)
{
m_nonCompositedContentLayer->setNeedsDisplayInRect(rect);
if (m_pageOverlayLayer)
m_pageOverlayLayer->setNeedsDisplayInRect(rect);
scheduleLayerFlush();
}
void LayerTreeHostQt::scrollNonCompositedContents(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollOffset)
{
setNonCompositedContentsNeedDisplay(scrollRect);
}
void LayerTreeHostQt::forceRepaint()
{
scheduleLayerFlush();
}
void LayerTreeHostQt::sizeDidChange(const WebCore::IntSize& newSize)
{
if (m_rootLayer->size() == newSize)
return;
m_rootLayer->setSize(newSize);
FloatSize oldSize = m_nonCompositedContentLayer->size();
m_nonCompositedContentLayer->setSize(newSize);
if (newSize.width() > oldSize.width()) {
float height = std::min(static_cast<float>(newSize.height()), oldSize.height());
m_nonCompositedContentLayer->setNeedsDisplayInRect(FloatRect(oldSize.width(), 0, newSize.width() - oldSize.width(), height));
}
if (newSize.height() > oldSize.height())
m_nonCompositedContentLayer->setNeedsDisplayInRect(FloatRect(0, oldSize.height(), newSize.width(), newSize.height() - oldSize.height()));
if (m_pageOverlayLayer)
m_pageOverlayLayer->setSize(newSize);
scheduleLayerFlush();
}
void LayerTreeHostQt::didInstallPageOverlay()
{
createPageOverlayLayer();
scheduleLayerFlush();
}
void LayerTreeHostQt::didUninstallPageOverlay()
{
destroyPageOverlayLayer();
scheduleLayerFlush();
}
void LayerTreeHostQt::setPageOverlayNeedsDisplay(const WebCore::IntRect& rect)
{
ASSERT(m_pageOverlayLayer);
m_pageOverlayLayer->setNeedsDisplayInRect(rect);
scheduleLayerFlush();
}
void LayerTreeHostQt::setPageOverlayOpacity(float value)
{
ASSERT(m_pageOverlayLayer);
m_pageOverlayLayer->setOpacity(value);
scheduleLayerFlush();
}
bool LayerTreeHostQt::flushPendingLayerChanges()
{
bool didSync = m_webPage->corePage()->mainFrame()->view()->syncCompositingStateIncludingSubframes();
m_nonCompositedContentLayer->syncCompositingStateForThisLayerOnly();
if (m_pageOverlayLayer)
m_pageOverlayLayer->syncCompositingStateForThisLayerOnly();
m_rootLayer->syncCompositingStateForThisLayerOnly();
return didSync;
}
void LayerTreeHostQt::syncLayerState(WebLayerID id, const WebLayerInfo& info)
{
if (m_shouldSendScrollPositionUpdate) {
m_webPage->send(Messages::LayerTreeHostProxy::DidChangeScrollPosition(m_visibleContentsRect.location()));
m_shouldSendScrollPositionUpdate = false;
}
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::SetCompositingLayerState(id, info));
}
void LayerTreeHostQt::syncLayerChildren(WebLayerID id, const Vector<WebLayerID>& children)
{
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::SetCompositingLayerChildren(id, children));
}
#if ENABLE(CSS_FILTERS)
void LayerTreeHostQt::syncLayerFilters(WebLayerID id, const FilterOperations& filters)
{
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::SetCompositingLayerFilters(id, filters));
}
#endif
void LayerTreeHostQt::attachLayer(WebGraphicsLayer* layer)
{
ASSERT(!m_registeredLayers.contains(layer));
m_registeredLayers.add(layer);
layer->setContentsScale(m_contentsScale);
layer->adjustVisibleRect();
}
void LayerTreeHostQt::detachLayer(WebGraphicsLayer* layer)
{
m_registeredLayers.remove(layer);
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::DeleteCompositingLayer(layer->id()));
}
static void updateOffsetFromViewportForSelf(RenderLayer* renderLayer)
{
RenderLayerBacking* backing = renderLayer->backing();
if (!backing)
return;
RenderStyle* style = renderLayer->renderer()->style();
if (!style)
return;
if (!renderLayer->renderer()->isPositioned() || renderLayer->renderer()->style()->position() != FixedPosition)
return;
if (!renderLayer->renderer()->container()->isRenderView())
return;
if (!renderLayer->isStackingContext())
return;
WebGraphicsLayer* graphicsLayer = toWebGraphicsLayer(backing->graphicsLayer());
graphicsLayer->setFixedToViewport(true);
}
static void updateOffsetFromViewportForLayer(RenderLayer* renderLayer)
{
updateOffsetFromViewportForSelf(renderLayer);
if (renderLayer->firstChild())
updateOffsetFromViewportForLayer(renderLayer->firstChild());
if (renderLayer->nextSibling())
updateOffsetFromViewportForLayer(renderLayer->nextSibling());
}
void LayerTreeHostQt::syncFixedLayers()
{
if (!m_webPage->corePage()->settings() || !m_webPage->corePage()->settings()->acceleratedCompositingForFixedPositionEnabled())
return;
if (!m_webPage->mainFrame()->view()->hasFixedObjects())
return;
RenderLayer* rootRenderLayer = m_webPage->mainFrame()->contentRenderer()->compositor()->rootRenderLayer();
ASSERT(rootRenderLayer);
if (rootRenderLayer->firstChild())
updateOffsetFromViewportForLayer(rootRenderLayer->firstChild());
}
void LayerTreeHostQt::performScheduledLayerFlush()
{
if (m_isSuspended || m_waitingForUIProcess)
return;
m_webPage->layoutIfNeeded();
if (!m_isValid)
return;
m_shouldSyncFrame = false;
flushPendingLayerChanges();
if (!m_shouldSyncFrame)
return;
if (m_shouldSyncRootLayer) {
m_webPage->send(Messages::LayerTreeHostProxy::SetRootCompositingLayer(toWebGraphicsLayer(m_rootLayer.get())->id()));
m_shouldSyncRootLayer = false;
}
m_webPage->send(Messages::LayerTreeHostProxy::DidRenderFrame());
m_waitingForUIProcess = true;
if (!m_notifyAfterScheduledLayerFlush)
return;
static_cast<DrawingAreaImpl*>(m_webPage->drawingArea())->layerHostDidFlushLayers();
m_notifyAfterScheduledLayerFlush = false;
}
void LayerTreeHostQt::layerFlushTimerFired(Timer<LayerTreeHostQt>*)
{
performScheduledLayerFlush();
}
void LayerTreeHostQt::createPageOverlayLayer()
{
ASSERT(!m_pageOverlayLayer);
m_pageOverlayLayer = GraphicsLayer::create(this);
#ifndef NDEBUG
m_pageOverlayLayer->setName("LayerTreeHostQt page overlay content");
#endif
m_pageOverlayLayer->setDrawsContent(true);
m_pageOverlayLayer->setSize(m_webPage->size());
m_rootLayer->addChild(m_pageOverlayLayer.get());
}
void LayerTreeHostQt::destroyPageOverlayLayer()
{
ASSERT(m_pageOverlayLayer);
m_pageOverlayLayer->removeFromParent();
m_pageOverlayLayer = nullptr;
}
int64_t LayerTreeHostQt::adoptImageBackingStore(Image* image)
{
if (!image)
return InvalidWebLayerID;
QPixmap* pixmap = image->nativeImageForCurrentFrame();
if (!pixmap)
return InvalidWebLayerID;
int64_t key = pixmap->cacheKey();
HashMap<int64_t, int>::iterator it = m_directlyCompositedImageRefCounts.find(key);
if (it != m_directlyCompositedImageRefCounts.end()) {
++(it->second);
return key;
}
RefPtr<ShareableBitmap> bitmap = ShareableBitmap::createShareable(image->size(), (image->currentFrameHasAlpha() ? ShareableBitmap::SupportsAlpha : 0));
{
OwnPtr<WebCore::GraphicsContext> graphicsContext = bitmap->createGraphicsContext();
graphicsContext->drawImage(image, ColorSpaceDeviceRGB, IntPoint::zero());
}
ShareableBitmap::Handle handle;
bitmap->createHandle(handle);
m_webPage->send(Messages::LayerTreeHostProxy::CreateDirectlyCompositedImage(key, handle));
m_directlyCompositedImageRefCounts.add(key, 1);
return key;
}
void LayerTreeHostQt::releaseImageBackingStore(int64_t key)
{
if (!key)
return;
HashMap<int64_t, int>::iterator it = m_directlyCompositedImageRefCounts.find(key);
if (it == m_directlyCompositedImageRefCounts.end())
return;
it->second--;
if (it->second)
return;
m_directlyCompositedImageRefCounts.remove(it);
m_webPage->send(Messages::LayerTreeHostProxy::DestroyDirectlyCompositedImage(key));
}
void LayerTreeHostQt::notifyAnimationStarted(const WebCore::GraphicsLayer*, double time)
{
}
void LayerTreeHostQt::notifySyncRequired(const WebCore::GraphicsLayer*)
{
}
void LayerTreeHostQt::paintContents(const WebCore::GraphicsLayer* graphicsLayer, WebCore::GraphicsContext& graphicsContext, WebCore::GraphicsLayerPaintingPhase, const WebCore::IntRect& clipRect)
{
if (graphicsLayer == m_nonCompositedContentLayer) {
m_webPage->drawRect(graphicsContext, clipRect);
return;
}
if (graphicsLayer == m_pageOverlayLayer) {
graphicsContext.clearRect(clipRect);
m_webPage->drawPageOverlay(graphicsContext, clipRect);
return;
}
}
bool LayerTreeHostQt::showDebugBorders(const WebCore::GraphicsLayer*) const
{
return m_webPage->corePage()->settings()->showDebugBorders();
}
bool LayerTreeHostQt::showRepaintCounter(const WebCore::GraphicsLayer*) const
{
return m_webPage->corePage()->settings()->showRepaintCounter();
}
bool LayerTreeHost::supportsAcceleratedCompositing()
{
return true;
}
void LayerTreeHostQt::createTile(WebLayerID layerID, int tileID, const SurfaceUpdateInfo& updateInfo, const WebCore::IntRect& targetRect)
{
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::CreateTileForLayer(layerID, tileID, targetRect, updateInfo));
}
void LayerTreeHostQt::updateTile(WebLayerID layerID, int tileID, const SurfaceUpdateInfo& updateInfo, const WebCore::IntRect& targetRect)
{
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::UpdateTileForLayer(layerID, tileID, targetRect, updateInfo));
}
void LayerTreeHostQt::removeTile(WebLayerID layerID, int tileID)
{
m_shouldSyncFrame = true;
m_webPage->send(Messages::LayerTreeHostProxy::RemoveTileForLayer(layerID, tileID));
}
WebCore::IntRect LayerTreeHostQt::visibleContentsRect() const
{
return m_visibleContentsRect;
}
void LayerTreeHostQt::setVisibleContentsRect(const IntRect& rect, float scale, const FloatPoint& trajectoryVector)
{
bool contentsRectDidChange = rect != m_visibleContentsRect;
bool contentsScaleDidChange = scale != m_contentsScale;
if (trajectoryVector != FloatPoint::zero())
toWebGraphicsLayer(m_nonCompositedContentLayer.get())->setVisibleContentRectTrajectoryVector(trajectoryVector);
if (contentsRectDidChange || contentsScaleDidChange) {
m_visibleContentsRect = rect;
m_contentsScale = scale;
HashSet<WebCore::WebGraphicsLayer*>::iterator end = m_registeredLayers.end();
for (HashSet<WebCore::WebGraphicsLayer*>::iterator it = m_registeredLayers.begin(); it != end; ++it) {
if (contentsScaleDidChange)
(*it)->setContentsScale(scale);
if (contentsRectDidChange)
(*it)->adjustVisibleRect();
}
}
scheduleLayerFlush();
if (m_webPage->useFixedLayout())
m_webPage->setFixedVisibleContentRect(rect);
if (contentsRectDidChange)
m_shouldSendScrollPositionUpdate = true;
}
void LayerTreeHostQt::renderNextFrame()
{
m_waitingForUIProcess = false;
scheduleLayerFlush();
for (int i = 0; i < m_updateAtlases.size(); ++i)
m_updateAtlases[i].didSwapBuffers();
}
bool LayerTreeHostQt::layerTreeTileUpdatesAllowed() const
{
return !m_isSuspended && !m_waitingForUIProcess;
}
void LayerTreeHostQt::purgeBackingStores()
{
HashSet<WebCore::WebGraphicsLayer*>::iterator end = m_registeredLayers.end();
for (HashSet<WebCore::WebGraphicsLayer*>::iterator it = m_registeredLayers.begin(); it != end; ++it)
(*it)->purgeBackingStores();
ASSERT(!m_directlyCompositedImageRefCounts.size());
m_updateAtlases.clear();
}
UpdateAtlas& LayerTreeHostQt::getAtlas(ShareableBitmap::Flags flags)
{
for (int i = 0; i < m_updateAtlases.size(); ++i) {
if (m_updateAtlases[i].flags() == flags)
return m_updateAtlases[i];
}
static const int ScratchBufferDimension = 2000;
m_updateAtlases.append(UpdateAtlas(ScratchBufferDimension, flags));
return m_updateAtlases.last();
}
PassOwnPtr<WebCore::GraphicsContext> LayerTreeHostQt::beginContentUpdate(const WebCore::IntSize& size, ShareableBitmap::Flags flags, ShareableSurface::Handle& handle, WebCore::IntPoint& offset)
{
UpdateAtlas& atlas = getAtlas(flags);
if (!atlas.surface()->createHandle(handle))
return PassOwnPtr<WebCore::GraphicsContext>();
OwnPtr<WebCore::GraphicsContext> graphicsContext = atlas.beginPaintingOnAvailableBuffer(size, offset);
if (!graphicsContext)
return PassOwnPtr<WebCore::GraphicsContext>();
return graphicsContext.release();
}
}