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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
#include "mozilla/layers/RemoteContentController.h"
#include "CompositorThread.h"
#include "MainThreadUtils.h"
#include "mozilla/dom/BrowserParent.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/layers/APZCTreeManagerParent.h" // for APZCTreeManagerParent
#include "mozilla/layers/APZThreadUtils.h"
#include "mozilla/layers/DoubleTapToZoom.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/MatrixMessage.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/Unused.h"
#include "Units.h"
#ifdef MOZ_WIDGET_ANDROID
# include "mozilla/jni/Utils.h"
#endif
static mozilla::LazyLogModule sApzRemoteLog("apz.cc.remote");
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
RemoteContentController::RemoteContentController()
: mCompositorThread(NS_GetCurrentThread()), mCanSend(true) {
MOZ_ASSERT(CompositorThread()->IsOnCurrentThread());
}
RemoteContentController::~RemoteContentController() = default;
void RemoteContentController::NotifyLayerTransforms(
nsTArray<MatrixMessage>&& aTransforms) {
if (!mCompositorThread->IsOnCurrentThread()) {
// We have to send messages from the compositor thread
mCompositorThread->Dispatch(
NewRunnableMethod<StoreCopyPassByRRef<nsTArray<MatrixMessage>>>(
"layers::RemoteContentController::NotifyLayerTransforms", this,
&RemoteContentController::NotifyLayerTransforms,
std::move(aTransforms)));
return;
}
if (mCanSend) {
Unused << SendLayerTransforms(aTransforms);
}
}
void RemoteContentController::RequestContentRepaint(
const RepaintRequest& aRequest) {
MOZ_ASSERT(IsRepaintThread());
if (mCanSend) {
Unused << SendRequestContentRepaint(aRequest);
}
}
void RemoteContentController::HandleTapOnParentProcessMainThread(
TapType aTapType, LayoutDevicePoint aPoint, Modifiers aModifiers,
ScrollableLayerGuid aGuid, uint64_t aInputBlockId,
const Maybe<DoubleTapToZoomMetrics>& aDoubleTapToZoomMetrics) {
MOZ_LOG(sApzRemoteLog, LogLevel::Debug,
("HandleTapOnMainThread(%d)", (int)aTapType));
MOZ_ASSERT(NS_IsMainThread());
dom::BrowserParent* tab =
dom::BrowserParent::GetBrowserParentFromLayersId(aGuid.mLayersId);
if (tab) {
tab->SendHandleTap(aTapType, aPoint, aModifiers, aGuid, aInputBlockId,
aDoubleTapToZoomMetrics);
}
}
void RemoteContentController::HandleTapOnGPUProcessMainThread(
TapType aTapType, LayoutDevicePoint aPoint, Modifiers aModifiers,
ScrollableLayerGuid aGuid, uint64_t aInputBlockId,
const Maybe<DoubleTapToZoomMetrics>& aDoubleTapToZoomMetrics) {
MOZ_ASSERT(XRE_IsGPUProcess());
MOZ_ASSERT(NS_IsMainThread());
// Send a message to the controller thread to handle the single-tap gesture.
APZInputBridgeParent* apzib =
CompositorBridgeParent::GetApzInputBridgeParentForRoot(aGuid.mLayersId);
if (apzib) {
Unused << apzib->SendHandleTap(aTapType, aPoint, aModifiers, aGuid,
aInputBlockId, aDoubleTapToZoomMetrics);
}
}
void RemoteContentController::HandleTap(
TapType aTapType, const LayoutDevicePoint& aPoint, Modifiers aModifiers,
const ScrollableLayerGuid& aGuid, uint64_t aInputBlockId,
const Maybe<DoubleTapToZoomMetrics>& aDoubleTapToZoomMetrics) {
MOZ_LOG(sApzRemoteLog, LogLevel::Debug, ("HandleTap(%d)", (int)aTapType));
APZThreadUtils::AssertOnControllerThread();
if (XRE_GetProcessType() == GeckoProcessType_GPU) {
if (NS_IsMainThread()) {
HandleTapOnGPUProcessMainThread(aTapType, aPoint, aModifiers, aGuid,
aInputBlockId, aDoubleTapToZoomMetrics);
} else {
NS_DispatchToMainThread(NewRunnableMethod<TapType, LayoutDevicePoint,
Modifiers, ScrollableLayerGuid,
uint64_t,
Maybe<DoubleTapToZoomMetrics>>(
"layers::RemoteContentController::HandleTapOnGPUProcessMainThread",
this, &RemoteContentController::HandleTapOnGPUProcessMainThread,
aTapType, aPoint, aModifiers, aGuid, aInputBlockId,
aDoubleTapToZoomMetrics));
}
return;
}
MOZ_ASSERT(XRE_IsParentProcess());
if (NS_IsMainThread()) {
HandleTapOnParentProcessMainThread(aTapType, aPoint, aModifiers, aGuid,
aInputBlockId, aDoubleTapToZoomMetrics);
} else {
// We must be on Android, running on the Java UI thread
#ifndef MOZ_WIDGET_ANDROID
MOZ_ASSERT(false);
#else
// We don't want to get the BrowserParent or call
// BrowserParent::SendHandleTap() from a non-main thread, so we need to
// redispatch to the main thread. However, we should use the same
// mechanism that the Android widget uses when dispatching input events
// to Gecko, which is nsAppShell::PostEvent. Note in particular that
// using NS_DispatchToMainThread would post to a different message loop,
// and introduces the possibility of this tap event getting processed
// out of order with respect to the touch events that synthesized it.
mozilla::jni::DispatchToGeckoPriorityQueue(NewRunnableMethod<
TapType, LayoutDevicePoint,
Modifiers, ScrollableLayerGuid,
uint64_t,
Maybe<DoubleTapToZoomMetrics>>(
"layers::RemoteContentController::HandleTapOnParentProcessMainThread",
this, &RemoteContentController::HandleTapOnParentProcessMainThread,
aTapType, aPoint, aModifiers, aGuid, aInputBlockId,
aDoubleTapToZoomMetrics));
#endif
}
}
void RemoteContentController::NotifyPinchGestureOnCompositorThread(
PinchGestureInput::PinchGestureType aType, const ScrollableLayerGuid& aGuid,
const LayoutDevicePoint& aFocusPoint, LayoutDeviceCoord aSpanChange,
Modifiers aModifiers) {
MOZ_ASSERT(mCompositorThread->IsOnCurrentThread());
// The raw pointer to APZCTreeManagerParent is ok here because we are on
// the compositor thread.
APZCTreeManagerParent* apzctmp =
CompositorBridgeParent::GetApzcTreeManagerParentForRoot(aGuid.mLayersId);
if (apzctmp) {
Unused << apzctmp->SendNotifyPinchGesture(aType, aGuid, aFocusPoint,
aSpanChange, aModifiers);
}
}
void RemoteContentController::NotifyPinchGesture(
PinchGestureInput::PinchGestureType aType, const ScrollableLayerGuid& aGuid,
const LayoutDevicePoint& aFocusPoint, LayoutDeviceCoord aSpanChange,
Modifiers aModifiers) {
APZThreadUtils::AssertOnControllerThread();
// For now we only ever want to handle this NotifyPinchGesture message in
// the parent process, even if the APZ is sending it to a content process.
// If we're in the GPU process, try to find a handle to the parent process
// and send it there.
if (XRE_IsGPUProcess()) {
if (mCompositorThread->IsOnCurrentThread()) {
NotifyPinchGestureOnCompositorThread(aType, aGuid, aFocusPoint,
aSpanChange, aModifiers);
} else {
mCompositorThread->Dispatch(
NewRunnableMethod<PinchGestureInput::PinchGestureType,
ScrollableLayerGuid, LayoutDevicePoint,
LayoutDeviceCoord, Modifiers>(
"layers::RemoteContentController::"
"NotifyPinchGestureOnCompositorThread",
this,
&RemoteContentController::NotifyPinchGestureOnCompositorThread,
aType, aGuid, aFocusPoint, aSpanChange, aModifiers));
}
return;
}
// If we're in the parent process, handle it directly. We don't have a
// handle to the widget though, so we fish out the ChromeProcessController
// and delegate to that instead.
if (XRE_IsParentProcess()) {
MOZ_ASSERT(NS_IsMainThread());
RefPtr<GeckoContentController> rootController =
CompositorBridgeParent::GetGeckoContentControllerForRoot(
aGuid.mLayersId);
if (rootController) {
rootController->NotifyPinchGesture(aType, aGuid, aFocusPoint, aSpanChange,
aModifiers);
}
}
}
bool RemoteContentController::IsRepaintThread() {
return mCompositorThread->IsOnCurrentThread();
}
void RemoteContentController::DispatchToRepaintThread(
already_AddRefed<Runnable> aTask) {
mCompositorThread->Dispatch(std::move(aTask));
}
void RemoteContentController::NotifyAPZStateChange(
const ScrollableLayerGuid& aGuid, APZStateChange aChange, int aArg,
Maybe<uint64_t> aInputBlockId) {
if (!mCompositorThread->IsOnCurrentThread()) {
// We have to send messages from the compositor thread
mCompositorThread->Dispatch(
NewRunnableMethod<ScrollableLayerGuid, APZStateChange, int,
Maybe<uint64_t>>(
"layers::RemoteContentController::NotifyAPZStateChange", this,
&RemoteContentController::NotifyAPZStateChange, aGuid, aChange,
aArg, aInputBlockId));
return;
}
if (mCanSend) {
Unused << SendNotifyAPZStateChange(aGuid, aChange, aArg, aInputBlockId);
}
}
void RemoteContentController::UpdateOverscrollVelocity(
const ScrollableLayerGuid& aGuid, float aX, float aY, bool aIsRootContent) {
if (XRE_IsParentProcess()) {
#ifdef MOZ_WIDGET_ANDROID
// We always want these to go to the parent process on Android
if (!NS_IsMainThread()) {
mozilla::jni::DispatchToGeckoPriorityQueue(
NewRunnableMethod<ScrollableLayerGuid, float, float, bool>(
"layers::RemoteContentController::UpdateOverscrollVelocity", this,
&RemoteContentController::UpdateOverscrollVelocity, aGuid, aX, aY,
aIsRootContent));
return;
}
#endif
MOZ_RELEASE_ASSERT(NS_IsMainThread());
RefPtr<GeckoContentController> rootController =
CompositorBridgeParent::GetGeckoContentControllerForRoot(
aGuid.mLayersId);
if (rootController) {
rootController->UpdateOverscrollVelocity(aGuid, aX, aY, aIsRootContent);
}
} else if (XRE_IsGPUProcess()) {
if (!mCompositorThread->IsOnCurrentThread()) {
mCompositorThread->Dispatch(
NewRunnableMethod<ScrollableLayerGuid, float, float, bool>(
"layers::RemoteContentController::UpdateOverscrollVelocity", this,
&RemoteContentController::UpdateOverscrollVelocity, aGuid, aX, aY,
aIsRootContent));
return;
}
MOZ_RELEASE_ASSERT(mCompositorThread->IsOnCurrentThread());
GeckoContentController* rootController =
CompositorBridgeParent::GetGeckoContentControllerForRoot(
aGuid.mLayersId);
if (rootController) {
MOZ_RELEASE_ASSERT(rootController->IsRemote());
Unused << static_cast<RemoteContentController*>(rootController)
->SendUpdateOverscrollVelocity(aGuid, aX, aY,
aIsRootContent);
}
}
}
void RemoteContentController::UpdateOverscrollOffset(
const ScrollableLayerGuid& aGuid, float aX, float aY, bool aIsRootContent) {
if (XRE_IsParentProcess()) {
#ifdef MOZ_WIDGET_ANDROID
// We always want these to go to the parent process on Android
if (!NS_IsMainThread()) {
mozilla::jni::DispatchToGeckoPriorityQueue(
NewRunnableMethod<ScrollableLayerGuid, float, float, bool>(
"layers::RemoteContentController::UpdateOverscrollOffset", this,
&RemoteContentController::UpdateOverscrollOffset, aGuid, aX, aY,
aIsRootContent));
return;
}
#endif
MOZ_RELEASE_ASSERT(NS_IsMainThread());
RefPtr<GeckoContentController> rootController =
CompositorBridgeParent::GetGeckoContentControllerForRoot(
aGuid.mLayersId);
if (rootController) {
rootController->UpdateOverscrollOffset(aGuid, aX, aY, aIsRootContent);
}
} else if (XRE_IsGPUProcess()) {
if (!mCompositorThread->IsOnCurrentThread()) {
mCompositorThread->Dispatch(
NewRunnableMethod<ScrollableLayerGuid, float, float, bool>(
"layers::RemoteContentController::UpdateOverscrollOffset", this,
&RemoteContentController::UpdateOverscrollOffset, aGuid, aX, aY,
aIsRootContent));
return;
}
MOZ_RELEASE_ASSERT(mCompositorThread->IsOnCurrentThread());
GeckoContentController* rootController =
CompositorBridgeParent::GetGeckoContentControllerForRoot(
aGuid.mLayersId);
if (rootController) {
MOZ_RELEASE_ASSERT(rootController->IsRemote());
Unused << static_cast<RemoteContentController*>(rootController)
->SendUpdateOverscrollOffset(aGuid, aX, aY, aIsRootContent);
}
}
}
void RemoteContentController::NotifyMozMouseScrollEvent(
const ScrollableLayerGuid::ViewID& aScrollId, const nsString& aEvent) {
if (!mCompositorThread->IsOnCurrentThread()) {
// We have to send messages from the compositor thread
mCompositorThread->Dispatch(
NewRunnableMethod<ScrollableLayerGuid::ViewID, nsString>(
"layers::RemoteContentController::NotifyMozMouseScrollEvent", this,
&RemoteContentController::NotifyMozMouseScrollEvent, aScrollId,
aEvent));
return;
}
if (mCanSend) {
Unused << SendNotifyMozMouseScrollEvent(aScrollId, aEvent);
}
}
void RemoteContentController::NotifyFlushComplete() {
MOZ_ASSERT(IsRepaintThread());
if (mCanSend) {
Unused << SendNotifyFlushComplete();
}
}
void RemoteContentController::NotifyAsyncScrollbarDragInitiated(
uint64_t aDragBlockId, const ScrollableLayerGuid::ViewID& aScrollId,
ScrollDirection aDirection) {
if (!mCompositorThread->IsOnCurrentThread()) {
// We have to send messages from the compositor thread
mCompositorThread->Dispatch(
NewRunnableMethod<uint64_t, ScrollableLayerGuid::ViewID,
ScrollDirection>(
"layers::RemoteContentController::"
"NotifyAsyncScrollbarDragInitiated",
this, &RemoteContentController::NotifyAsyncScrollbarDragInitiated,
aDragBlockId, aScrollId, aDirection));
return;
}
if (mCanSend) {
Unused << SendNotifyAsyncScrollbarDragInitiated(aDragBlockId, aScrollId,
aDirection);
}
}
void RemoteContentController::NotifyAsyncScrollbarDragRejected(
const ScrollableLayerGuid::ViewID& aScrollId) {
if (!mCompositorThread->IsOnCurrentThread()) {
// We have to send messages from the compositor thread
mCompositorThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid::ViewID>(
"layers::RemoteContentController::NotifyAsyncScrollbarDragRejected",
this, &RemoteContentController::NotifyAsyncScrollbarDragRejected,
aScrollId));
return;
}
if (mCanSend) {
Unused << SendNotifyAsyncScrollbarDragRejected(aScrollId);
}
}
void RemoteContentController::NotifyAsyncAutoscrollRejected(
const ScrollableLayerGuid::ViewID& aScrollId) {
if (!mCompositorThread->IsOnCurrentThread()) {
// We have to send messages from the compositor thread
mCompositorThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid::ViewID>(
"layers::RemoteContentController::NotifyAsyncAutoscrollRejected", this,
&RemoteContentController::NotifyAsyncAutoscrollRejected, aScrollId));
return;
}
if (mCanSend) {
Unused << SendNotifyAsyncAutoscrollRejected(aScrollId);
}
}
void RemoteContentController::CancelAutoscroll(
const ScrollableLayerGuid& aGuid) {
if (XRE_GetProcessType() == GeckoProcessType_GPU) {
CancelAutoscrollCrossProcess(aGuid);
} else {
CancelAutoscrollInProcess(aGuid);
}
}
void RemoteContentController::CancelAutoscrollInProcess(
const ScrollableLayerGuid& aGuid) {
MOZ_ASSERT(XRE_IsParentProcess());
if (!NS_IsMainThread()) {
NS_DispatchToMainThread(NewRunnableMethod<ScrollableLayerGuid>(
"layers::RemoteContentController::CancelAutoscrollInProcess", this,
&RemoteContentController::CancelAutoscrollInProcess, aGuid));
return;
}
APZCCallbackHelper::CancelAutoscroll(aGuid.mScrollId);
}
void RemoteContentController::CancelAutoscrollCrossProcess(
const ScrollableLayerGuid& aGuid) {
MOZ_ASSERT(XRE_IsGPUProcess());
if (!mCompositorThread->IsOnCurrentThread()) {
mCompositorThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid>(
"layers::RemoteContentController::CancelAutoscrollCrossProcess", this,
&RemoteContentController::CancelAutoscrollCrossProcess, aGuid));
return;
}
// The raw pointer to APZCTreeManagerParent is ok here because we are on
// the compositor thread.
if (APZCTreeManagerParent* parent =
CompositorBridgeParent::GetApzcTreeManagerParentForRoot(
aGuid.mLayersId)) {
Unused << parent->SendCancelAutoscroll(aGuid.mScrollId);
}
}
void RemoteContentController::NotifyScaleGestureComplete(
const ScrollableLayerGuid& aGuid, float aScale) {
if (XRE_GetProcessType() == GeckoProcessType_GPU) {
NotifyScaleGestureCompleteCrossProcess(aGuid, aScale);
} else {
NotifyScaleGestureCompleteInProcess(aGuid, aScale);
}
}
void RemoteContentController::NotifyScaleGestureCompleteInProcess(
const ScrollableLayerGuid& aGuid, float aScale) {
MOZ_ASSERT(XRE_IsParentProcess());
if (!NS_IsMainThread()) {
NS_DispatchToMainThread(NewRunnableMethod<ScrollableLayerGuid, float>(
"layers::RemoteContentController::"
"NotifyScaleGestureCompleteInProcess",
this, &RemoteContentController::NotifyScaleGestureCompleteInProcess,
aGuid, aScale));
return;
}
RefPtr<GeckoContentController> rootController =
CompositorBridgeParent::GetGeckoContentControllerForRoot(aGuid.mLayersId);
if (rootController) {
MOZ_ASSERT(rootController != this);
if (rootController != this) {
rootController->NotifyScaleGestureComplete(aGuid, aScale);
}
}
}
void RemoteContentController::NotifyScaleGestureCompleteCrossProcess(
const ScrollableLayerGuid& aGuid, float aScale) {
MOZ_ASSERT(XRE_IsGPUProcess());
if (!mCompositorThread->IsOnCurrentThread()) {
mCompositorThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid, float>(
"layers::RemoteContentController::"
"NotifyScaleGestureCompleteCrossProcess",
this, &RemoteContentController::NotifyScaleGestureCompleteCrossProcess,
aGuid, aScale));
return;
}
// The raw pointer to APZCTreeManagerParent is ok here because we are on
// the compositor thread.
if (APZCTreeManagerParent* parent =
CompositorBridgeParent::GetApzcTreeManagerParentForRoot(
aGuid.mLayersId)) {
Unused << parent->SendNotifyScaleGestureComplete(aGuid.mScrollId, aScale);
}
}
void RemoteContentController::ActorDestroy(ActorDestroyReason aWhy) {
// This controller could possibly be kept alive longer after this
// by a RefPtr, but it is no longer valid to send messages.
mCanSend = false;
}
void RemoteContentController::Destroy() {
if (mCanSend) {
mCanSend = false;
Unused << SendDestroy();
}
}
mozilla::ipc::IPCResult RemoteContentController::RecvDestroy() {
// The actor on the other side is about to get destroyed, so let's not
// send it any more messages.
mCanSend = false;
return IPC_OK();
}
bool RemoteContentController::IsRemote() { return true; }
} // namespace layers
} // namespace mozilla