Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 211 insertions, 0 deletions

diff --git a/gfx/layers/ipc/APZInputBridgeChild.cpp b/gfx/layers/ipc/APZInputBridgeChild.cpp
new file mode 100644
index 0000000000..bf059143ec
--- /dev/null
+++ b/gfx/layers/ipc/APZInputBridgeChild.cpp
@@ -0,0 +1,211 @@
+/* -*- 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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/layers/APZInputBridgeChild.h"
+
+#include "InputData.h"  // for InputData, etc
+#include "mozilla/gfx/GPUProcessManager.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/layers/APZThreadUtils.h"
+#include "mozilla/layers/SynchronousTask.h"
+
+namespace mozilla {
+namespace layers {
+
+/* static */
+RefPtr<APZInputBridgeChild> APZInputBridgeChild::Create(
+    const uint64_t& aProcessToken, Endpoint<PAPZInputBridgeChild>&& aEndpoint) {
+  RefPtr<APZInputBridgeChild> child = new APZInputBridgeChild(aProcessToken);
+
+  MOZ_ASSERT(APZThreadUtils::IsControllerThreadAlive());
+
+  APZThreadUtils::RunOnControllerThread(
+      NewRunnableMethod<Endpoint<PAPZInputBridgeChild>&&>(
+          "layers::APZInputBridgeChild::Open", child,
+          &APZInputBridgeChild::Open, std::move(aEndpoint)));
+
+  return child;
+}
+
+APZInputBridgeChild::APZInputBridgeChild(const uint64_t& aProcessToken)
+    : mIsOpen(false), mProcessToken(aProcessToken) {
+  MOZ_ASSERT(XRE_IsParentProcess());
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+APZInputBridgeChild::~APZInputBridgeChild() = default;
+
+void APZInputBridgeChild::Open(Endpoint<PAPZInputBridgeChild>&& aEndpoint) {
+  APZThreadUtils::AssertOnControllerThread();
+
+  mIsOpen = aEndpoint.Bind(this);
+
+  if (!mIsOpen) {
+    // The GPU Process Manager might be gone if we receive ActorDestroy very
+    // late in shutdown.
+    if (gfx::GPUProcessManager* gpm = gfx::GPUProcessManager::Get()) {
+      gpm->NotifyRemoteActorDestroyed(mProcessToken);
+    }
+    return;
+  }
+}
+
+void APZInputBridgeChild::Destroy() {
+  MOZ_ASSERT(XRE_IsParentProcess());
+  MOZ_ASSERT(NS_IsMainThread());
+
+  // Destroy will get called from the main thread, so we must synchronously
+  // dispatch to the controller thread to close the bridge.
+  layers::SynchronousTask task("layers::APZInputBridgeChild::Destroy");
+  APZThreadUtils::RunOnControllerThread(
+      NS_NewRunnableFunction("layers::APZInputBridgeChild::Destroy", [&]() {
+        APZThreadUtils::AssertOnControllerThread();
+        AutoCompleteTask complete(&task);
+
+        // Clear the process token so that we don't notify the GPUProcessManager
+        // about an abnormal shutdown, thereby tearing down the GPU process.
+        mProcessToken = 0;
+
+        if (mIsOpen) {
+          PAPZInputBridgeChild::Close();
+          mIsOpen = false;
+        }
+      }));
+
+  task.Wait();
+}
+
+void APZInputBridgeChild::ActorDestroy(ActorDestroyReason aWhy) {
+  mIsOpen = false;
+
+  if (mProcessToken) {
+    gfx::GPUProcessManager::Get()->NotifyRemoteActorDestroyed(mProcessToken);
+    mProcessToken = 0;
+  }
+}
+
+APZEventResult APZInputBridgeChild::ReceiveInputEvent(
+    InputData& aEvent, InputBlockCallback&& aCallback) {
+  MOZ_ASSERT(mIsOpen);
+  APZThreadUtils::AssertOnControllerThread();
+
+  APZEventResult res;
+  switch (aEvent.mInputType) {
+    case MULTITOUCH_INPUT: {
+      MultiTouchInput& event = aEvent.AsMultiTouchInput();
+      MultiTouchInput processedEvent;
+
+      SendReceiveMultiTouchInputEvent(event, !!aCallback, &res,
+                                      &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    case MOUSE_INPUT: {
+      MouseInput& event = aEvent.AsMouseInput();
+      MouseInput processedEvent;
+
+      SendReceiveMouseInputEvent(event, !!aCallback, &res, &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    case PANGESTURE_INPUT: {
+      PanGestureInput& event = aEvent.AsPanGestureInput();
+      PanGestureInput processedEvent;
+
+      SendReceivePanGestureInputEvent(event, !!aCallback, &res,
+                                      &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    case PINCHGESTURE_INPUT: {
+      PinchGestureInput& event = aEvent.AsPinchGestureInput();
+      PinchGestureInput processedEvent;
+
+      SendReceivePinchGestureInputEvent(event, !!aCallback, &res,
+                                        &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    case TAPGESTURE_INPUT: {
+      TapGestureInput& event = aEvent.AsTapGestureInput();
+      TapGestureInput processedEvent;
+
+      SendReceiveTapGestureInputEvent(event, !!aCallback, &res,
+                                      &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    case SCROLLWHEEL_INPUT: {
+      ScrollWheelInput& event = aEvent.AsScrollWheelInput();
+      ScrollWheelInput processedEvent;
+
+      SendReceiveScrollWheelInputEvent(event, !!aCallback, &res,
+                                       &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    case KEYBOARD_INPUT: {
+      KeyboardInput& event = aEvent.AsKeyboardInput();
+      KeyboardInput processedEvent;
+
+      SendReceiveKeyboardInputEvent(event, !!aCallback, &res, &processedEvent);
+
+      event = processedEvent;
+      break;
+    }
+    default: {
+      MOZ_ASSERT_UNREACHABLE("Invalid InputData type.");
+      res.SetStatusAsConsumeNoDefault();
+      break;
+    }
+  }
+
+  if (aCallback && res.WillHaveDelayedResult()) {
+    mInputBlockCallbacks.emplace(res.mInputBlockId, std::move(aCallback));
+  }
+
+  return res;
+}
+
+mozilla::ipc::IPCResult APZInputBridgeChild::RecvCallInputBlockCallback(
+    uint64_t aInputBlockId, const APZHandledResult& aHandledResult) {
+  auto it = mInputBlockCallbacks.find(aInputBlockId);
+  if (it != mInputBlockCallbacks.end()) {
+    it->second(aInputBlockId, aHandledResult);
+    // The callback is one-shot; discard it after calling it.
+    mInputBlockCallbacks.erase(it);
+  }
+
+  return IPC_OK();
+}
+
+void APZInputBridgeChild::ProcessUnhandledEvent(
+    LayoutDeviceIntPoint* aRefPoint, ScrollableLayerGuid* aOutTargetGuid,
+    uint64_t* aOutFocusSequenceNumber, LayersId* aOutLayersId) {
+  MOZ_ASSERT(mIsOpen);
+  APZThreadUtils::AssertOnControllerThread();
+
+  SendProcessUnhandledEvent(*aRefPoint, aRefPoint, aOutTargetGuid,
+                            aOutFocusSequenceNumber, aOutLayersId);
+}
+
+void APZInputBridgeChild::UpdateWheelTransaction(
+    LayoutDeviceIntPoint aRefPoint, EventMessage aEventMessage,
+    const Maybe<ScrollableLayerGuid>& aTargetGuid) {
+  MOZ_ASSERT(mIsOpen);
+  APZThreadUtils::AssertOnControllerThread();
+
+  SendUpdateWheelTransaction(aRefPoint, aEventMessage, aTargetGuid);
+}
+
+}  // namespace layers
+}  // namespace mozilla