gecko-dev/layout/ipc/RenderFrameParent.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "base/basictypes.h"
#include "BasicLayers.h"
#include "gfxPrefs.h"
#ifdef MOZ_ENABLE_D3D9_LAYER
# include "LayerManagerD3D9.h"
#endif //MOZ_ENABLE_D3D9_LAYER
#include "mozilla/BrowserElementParent.h"
#include "mozilla/EventForwards.h" // for Modifiers
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/dom/TabParent.h"
#include "mozilla/layers/APZCTreeManager.h"
#include "mozilla/layers/APZThreadUtils.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/LayerTransactionParent.h"
#include "nsContentUtils.h"
#include "nsFocusManager.h"
#include "nsFrameLoader.h"
#include "nsIObserver.h"
#include "nsStyleStructInlines.h"
#include "nsSubDocumentFrame.h"
#include "nsView.h"
#include "nsViewportFrame.h"
#include "RenderFrameParent.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/layers/LayerManagerComposite.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#include "ClientLayerManager.h"
#include "FrameLayerBuilder.h"
using namespace mozilla::dom;
using namespace mozilla::gfx;
using namespace mozilla::layers;
namespace mozilla {
namespace layout {
typedef FrameMetrics::ViewID ViewID;
/**
* Gets the layer-pixel offset of aContainerFrame's content rect top-left
* from the nearest display item reference frame (which we assume will be inducing
* a ContainerLayer).
*/
static nsIntPoint
GetContentRectLayerOffset(nsIFrame* aContainerFrame, nsDisplayListBuilder* aBuilder)
{
nscoord auPerDevPixel = aContainerFrame->PresContext()->AppUnitsPerDevPixel();
// Offset to the content rect in case we have borders or padding
// Note that aContainerFrame could be a reference frame itself, so
// we need to be careful here to ensure that we call ToReferenceFrame
// on aContainerFrame and not its parent.
nsPoint frameOffset = aBuilder->ToReferenceFrame(aContainerFrame) +
aContainerFrame->GetContentRectRelativeToSelf().TopLeft();
return frameOffset.ToNearestPixels(auPerDevPixel);
}
// Return true iff |aManager| is a "temporary layer manager". They're
// used for small software rendering tasks, like drawWindow. That's
// currently implemented by a BasicLayerManager without a backing
// widget, and hence in non-retained mode.
inline static bool
IsTempLayerManager(LayerManager* aManager)
{
return (mozilla::layers::LayersBackend::LAYERS_BASIC == aManager->GetBackendType() &&
!static_cast<BasicLayerManager*>(aManager)->IsRetained());
}
already_AddRefed<LayerManager>
GetFrom(nsFrameLoader* aFrameLoader)
{
nsIDocument* doc = aFrameLoader->GetOwnerDoc();
if (!doc) {
return nullptr;
}
return nsContentUtils::LayerManagerForDocument(doc);
}
RenderFrameParent::RenderFrameParent(nsFrameLoader* aFrameLoader, bool* aSuccess)
: mLayersId(0)
, mFrameLoader(aFrameLoader)
, mFrameLoaderDestroyed(false)
, mAsyncPanZoomEnabled(false)
, mInitted(false)
{
mInitted = Init(aFrameLoader);
*aSuccess = mInitted;
}
RenderFrameParent::~RenderFrameParent()
{}
bool
RenderFrameParent::Init(nsFrameLoader* aFrameLoader)
{
if (mInitted || !aFrameLoader) {
return false;
}
mFrameLoader = aFrameLoader;
RefPtr<LayerManager> lm = GetFrom(mFrameLoader);
mAsyncPanZoomEnabled = lm && lm->AsyncPanZoomEnabled();
TabParent* browser = TabParent::GetFrom(mFrameLoader);
if (XRE_IsParentProcess()) {
// Our remote frame will push layers updates to the compositor,
// and we'll keep an indirect reference to that tree.
browser->Manager()->AsContentParent()->AllocateLayerTreeId(browser, &mLayersId);
if (lm && lm->AsClientLayerManager()) {
lm->AsClientLayerManager()->GetRemoteRenderer()->SendNotifyChildCreated(mLayersId);
}
} else if (XRE_IsContentProcess()) {
ContentChild::GetSingleton()->SendAllocateLayerTreeId(browser->Manager()->ChildID(), browser->GetTabId(), &mLayersId);
CompositorBridgeChild::Get()->SendNotifyChildCreated(mLayersId);
}
mInitted = true;
return true;
}
bool
RenderFrameParent::IsInitted()
{
return mInitted;
}
void
RenderFrameParent::Destroy()
{
mFrameLoaderDestroyed = true;
}
already_AddRefed<Layer>
RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame,
LayerManager* aManager,
const nsIntRect& aVisibleRect,
nsDisplayItem* aItem,
const ContainerLayerParameters& aContainerParameters)
{
MOZ_ASSERT(aFrame,
"makes no sense to have a shadow tree without a frame");
MOZ_ASSERT(!mContainer ||
IsTempLayerManager(aManager) ||
mContainer->Manager() == aManager,
"retaining manager changed out from under us ... HELP!");
if (IsTempLayerManager(aManager) ||
(mContainer && mContainer->Manager() != aManager)) {
// This can happen if aManager is a "temporary" manager, or if the
// widget's layer manager changed out from under us. We need to
// FIXME handle the former case somehow, probably with an API to
// draw a manager's subtree. The latter is bad bad bad, but the the
// MOZ_ASSERT() above will flag it. Returning nullptr here will just
// cause the shadow subtree not to be rendered.
if (!aContainerParameters.mForEventsOnly) {
NS_WARNING("Remote iframe not rendered");
}
return nullptr;
}
uint64_t id = GetLayerTreeId();
if (!id) {
return nullptr;
}
RefPtr<Layer> layer =
(aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, aItem));
if (!layer) {
layer = aManager->CreateRefLayer();
}
if (!layer) {
// Probably a temporary layer manager that doesn't know how to
// use ref layers.
return nullptr;
}
static_cast<RefLayer*>(layer.get())->SetReferentId(id);
nsIntPoint offset = GetContentRectLayerOffset(aFrame, aBuilder);
// We can only have an offset if we're a child of an inactive
// container, but our display item is LAYER_ACTIVE_FORCE which
// forces all layers above to be active.
MOZ_ASSERT(aContainerParameters.mOffset == nsIntPoint());
gfx::Matrix4x4 m = gfx::Matrix4x4::Translation(offset.x, offset.y, 0.0);
// Remote content can't be repainted by us, so we multiply down
// the resolution that our container expects onto our container.
m.PreScale(aContainerParameters.mXScale, aContainerParameters.mYScale, 1.0);
layer->SetBaseTransform(m);
return layer.forget();
}
void
RenderFrameParent::OwnerContentChanged(nsIContent* aContent)
{
MOZ_ASSERT(!mFrameLoader || mFrameLoader->GetOwnerContent() == aContent,
"Don't build new map if owner is same!");
RefPtr<LayerManager> lm = mFrameLoader ? GetFrom(mFrameLoader) : nullptr;
// Perhaps the document containing this frame currently has no presentation?
if (lm && lm->AsClientLayerManager()) {
lm->AsClientLayerManager()->GetRemoteRenderer()->SendAdoptChild(mLayersId);
FrameLayerBuilder::InvalidateAllLayers(lm);
}
}
void
RenderFrameParent::ActorDestroy(ActorDestroyReason why)
{
if (mLayersId != 0) {
if (XRE_IsParentProcess()) {
GPUProcessManager::Get()->DeallocateLayerTreeId(mLayersId);
} else if (XRE_IsContentProcess()) {
ContentChild::GetSingleton()->SendDeallocateLayerTreeId(mLayersId);
}
}
mFrameLoader = nullptr;
}
bool
RenderFrameParent::RecvNotifyCompositorTransaction()
{
TriggerRepaint();
return true;
}
bool
RenderFrameParent::RecvUpdateHitRegion(const nsRegion& aRegion)
{
mTouchRegion = aRegion;
return true;
}
void
RenderFrameParent::TriggerRepaint()
{
nsIFrame* docFrame = mFrameLoader->GetPrimaryFrameOfOwningContent();
if (!docFrame) {
// Bad, but nothing we can do about it (XXX/cjones: or is there?
// maybe bug 589337?). When the new frame is created, we'll
// probably still be the current render frame and will get to draw
// our content then. Or, we're shutting down and this update goes
// to /dev/null.
return;
}
docFrame->InvalidateLayer(nsDisplayItem::TYPE_REMOTE);
}
uint64_t
RenderFrameParent::GetLayerTreeId() const
{
return mLayersId;
}
void
RenderFrameParent::BuildDisplayList(nsDisplayListBuilder* aBuilder,
nsSubDocumentFrame* aFrame,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// We're the subdoc for <browser remote="true"> and it has
// painted content. Display its shadow layer tree.
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
nsPoint offset = aBuilder->ToReferenceFrame(aFrame);
nsRect bounds = aFrame->EnsureInnerView()->GetBounds() + offset;
clipState.ClipContentDescendants(bounds);
aLists.Content()->AppendToTop(
new (aBuilder) nsDisplayRemote(aBuilder, aFrame, this));
}
bool
RenderFrameParent::HitTest(const nsRect& aRect)
{
return mTouchRegion.Contains(aRect);
}
void
RenderFrameParent::GetTextureFactoryIdentifier(TextureFactoryIdentifier* aTextureFactoryIdentifier)
{
RefPtr<LayerManager> lm = mFrameLoader ? GetFrom(mFrameLoader) : nullptr;
// Perhaps the document containing this frame currently has no presentation?
if (lm && lm->AsClientLayerManager()) {
*aTextureFactoryIdentifier = lm->AsClientLayerManager()->GetTextureFactoryIdentifier();
} else {
*aTextureFactoryIdentifier = TextureFactoryIdentifier();
}
}
void
RenderFrameParent::TakeFocusForClickFromTap()
{
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
return;
}
nsCOMPtr<nsIContent> owner = mFrameLoader->GetOwnerContent();
if (!owner) {
return;
}
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(owner);
if (!element) {
return;
}
fm->SetFocus(element, nsIFocusManager::FLAG_BYMOUSE |
nsIFocusManager::FLAG_BYTOUCH |
nsIFocusManager::FLAG_NOSCROLL);
}
bool
RenderFrameParent::RecvTakeFocusForClickFromTap()
{
TakeFocusForClickFromTap();
return true;
}
} // namespace layout
} // namespace mozilla
nsDisplayRemote::nsDisplayRemote(nsDisplayListBuilder* aBuilder,
nsSubDocumentFrame* aFrame,
RenderFrameParent* aRemoteFrame)
: nsDisplayItem(aBuilder, aFrame)
, mRemoteFrame(aRemoteFrame)
, mEventRegionsOverride(EventRegionsOverride::NoOverride)
{
if (aBuilder->IsBuildingLayerEventRegions()) {
bool frameIsPointerEventsNone =
!aFrame->PassPointerEventsToChildren() &&
aFrame->StyleUserInterface()->GetEffectivePointerEvents(aFrame) ==
NS_STYLE_POINTER_EVENTS_NONE;
if (aBuilder->IsInsidePointerEventsNoneDoc() || frameIsPointerEventsNone) {
mEventRegionsOverride |= EventRegionsOverride::ForceEmptyHitRegion;
}
if (nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents(aFrame->PresContext()->PresShell())) {
mEventRegionsOverride |= EventRegionsOverride::ForceDispatchToContent;
}
}
}
already_AddRefed<Layer>
nsDisplayRemote::BuildLayer(nsDisplayListBuilder* aBuilder,
LayerManager* aManager,
const ContainerLayerParameters& aContainerParameters)
{
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
nsIntRect visibleRect = GetVisibleRect().ToNearestPixels(appUnitsPerDevPixel);
visibleRect += aContainerParameters.mOffset;
RefPtr<Layer> layer = mRemoteFrame->BuildLayer(aBuilder, mFrame, aManager, visibleRect, this, aContainerParameters);
if (layer && layer->AsContainerLayer()) {
layer->AsContainerLayer()->SetEventRegionsOverride(mEventRegionsOverride);
}
return layer.forget();
}
void
nsDisplayRemote::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
{
if (mRemoteFrame->HitTest(aRect)) {
aOutFrames->AppendElement(mFrame);
}
}