Fix mouse capture behavior for Editor Viewport (#3417)

* first pass of fixes for cursor capture and context menu

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* restore previous behavior of HandleMouseMoveEvent

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* tidy-up from previous cursor/input changes

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add missing casts

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* small updates to support tests

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* additional tests and some tidy-up

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* small updates before publishing PR (comment/naming updates)

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add missing parameter to MouseInteractionEvent constructor

Signed-off-by: hultonha <hultonha@amazon.co.uk>

Code/Editor/EditorViewportSettings.cpp

@@ -33,6 +33,7 @@ namespace SandboxEditor
     constexpr AZStd::string_view CameraTranslateSmoothnessSetting = "/Amazon/Preferences/Editor/Camera/TranslateSmoothness";
     constexpr AZStd::string_view CameraTranslateSmoothingSetting = "/Amazon/Preferences/Editor/Camera/TranslateSmoothing";
     constexpr AZStd::string_view CameraRotateSmoothingSetting = "/Amazon/Preferences/Editor/Camera/RotateSmoothing";
+    constexpr AZStd::string_view CameraCaptureCursorLookSetting = "/Amazon/Preferences/Editor/Camera/CaptureCursorLook";
     constexpr AZStd::string_view CameraTranslateForwardIdSetting = "/Amazon/Preferences/Editor/Camera/CameraTranslateForwardId";
     constexpr AZStd::string_view CameraTranslateBackwardIdSetting = "/Amazon/Preferences/Editor/Camera/CameraTranslateBackwardId";
     constexpr AZStd::string_view CameraTranslateLeftIdSetting = "/Amazon/Preferences/Editor/Camera/CameraTranslateLeftId";
@@ -60,7 +61,7 @@ namespace SandboxEditor
     AZStd::remove_cvref_t<T> GetRegistry(const AZStd::string_view setting, T&& defaultValue)
     {
         AZStd::remove_cvref_t<T> value = AZStd::forward<T>(defaultValue);
-        if (auto* registry = AZ::SettingsRegistry::Get())
+        if (const auto* registry = AZ::SettingsRegistry::Get())
         {
             registry->Get(value, setting);
         }
@@ -281,6 +282,16 @@ namespace SandboxEditor
         SetRegistry(CameraTranslateSmoothingSetting, enabled);
     }
 
+    bool CameraCaptureCursorForLook()
+    {
+        return GetRegistry(CameraCaptureCursorLookSetting, true);
+    }
+
+    void SetCameraCaptureCursorForLook(const bool capture)
+    {
+        SetRegistry(CameraCaptureCursorLookSetting, capture);
+    }
+
     AzFramework::InputChannelId CameraTranslateForwardChannelId()
     {
         return AzFramework::InputChannelId(

Code/Editor/EditorViewportSettings.h

@@ -86,6 +86,9 @@ namespace SandboxEditor
     SANDBOX_API bool CameraTranslateSmoothingEnabled();
     SANDBOX_API void SetCameraTranslateSmoothingEnabled(bool enabled);
 
+    SANDBOX_API bool CameraCaptureCursorForLook();
+    SANDBOX_API void SetCameraCaptureCursorForLook(bool capture);
+
     SANDBOX_API AzFramework::InputChannelId CameraTranslateForwardChannelId();
     SANDBOX_API void SetCameraTranslateForwardChannelId(AZStd::string_view cameraTranslateForwardId);
 

Code/Editor/EditorViewportWidget.cpp

@@ -104,7 +104,6 @@
 
 AZ_CVAR(
     bool, ed_visibility_logTiming, false, nullptr, AZ::ConsoleFunctorFlags::Null, "Output the timing of the new IVisibilitySystem query");
-AZ_CVAR(bool, ed_showCursorCameraLook, true, nullptr, AZ::ConsoleFunctorFlags::Null, "Show the cursor when using free look with the new camera system");
 
 EditorViewportWidget* EditorViewportWidget::m_pPrimaryViewport = nullptr;
 
@@ -1079,13 +1078,19 @@ AZStd::shared_ptr<AtomToolsFramework::ModularViewportCameraController> CreateMod
         {
             const auto hideCursor = [viewportId]
             {
-                AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Event(
-                    viewportId, &AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Events::BeginCursorCapture);
+                if (SandboxEditor::CameraCaptureCursorForLook())
+                {
+                    AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Event(
+                        viewportId, &AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Events::BeginCursorCapture);
+                }
             };
             const auto showCursor = [viewportId]
             {
-                AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Event(
-                    viewportId, &AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Events::EndCursorCapture);
+                if (SandboxEditor::CameraCaptureCursorForLook())
+                {
+                    AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Event(
+                        viewportId, &AzToolsFramework::ViewportInteraction::ViewportMouseCursorRequestBus::Events::EndCursorCapture);
+                }
             };
 
             auto firstPersonRotateCamera = AZStd::make_shared<AzFramework::RotateCameraInput>(SandboxEditor::CameraFreeLookChannelId());
@@ -1094,12 +1099,10 @@ AZStd::shared_ptr<AtomToolsFramework::ModularViewportCameraController> CreateMod
                 return SandboxEditor::CameraRotateSpeed();
             };
 
-            if (!ed_showCursorCameraLook)
-            {
-                // default behavior is to hide the cursor but this can be disabled (useful for remote desktop)
-                firstPersonRotateCamera->SetActivationBeganFn(hideCursor);
-                firstPersonRotateCamera->SetActivationEndedFn(showCursor);
-            }
+            // default behavior is to hide the cursor but this can be disabled (useful for remote desktop)
+            // note: See CaptureCursorLook in the Settings Registry
+            firstPersonRotateCamera->SetActivationBeganFn(hideCursor);
+            firstPersonRotateCamera->SetActivationEndedFn(showCursor);
 
             auto firstPersonPanCamera =
                 AZStd::make_shared<AzFramework::PanCameraInput>(SandboxEditor::CameraFreePanChannelId(), AzFramework::LookPan);

Code/Editor/Lib/Tests/test_ModularViewportCameraController.cpp

@@ -7,6 +7,7 @@
  */
 
 #include <AtomToolsFramework/Viewport/ModularViewportCameraController.h>
+#include <AzCore/Settings/SettingsRegistryImpl.h>
 #include <AzFramework/Viewport/ViewportControllerList.h>
 #include <AzToolsFramework/Input/QtEventToAzInputManager.h>
 #include <AzToolsFramework/UnitTest/AzToolsFrameworkTestHelpers.h>
@@ -95,10 +96,16 @@ namespace UnitTest
             m_controllerList->RegisterViewportContext(TestViewportId);
 
             m_inputChannelMapper = AZStd::make_unique<AzToolsFramework::QtEventToAzInputMapper>(m_rootWidget.get(), TestViewportId);
+
+            m_settingsRegistry = AZStd::make_unique<AZ::SettingsRegistryImpl>();
+            AZ::SettingsRegistry::Register(m_settingsRegistry.get());
         }
 
         void TearDown() override
         {
+            AZ::SettingsRegistry::Unregister(m_settingsRegistry.get());
+            m_settingsRegistry.reset();
+
             m_inputChannelMapper.reset();
 
             m_controllerList->UnregisterViewportContext(TestViewportId);
@@ -170,7 +177,7 @@ namespace UnitTest
         void RepeatDiagonalMouseMovements(const AZStd::function<float()>& deltaTimeFn)
         {
             // move to the center of the screen
-            auto start = QPoint(WidgetSize.width() / 2, WidgetSize.height() / 2);
+            const auto start = QPoint(WidgetSize.width() / 2, WidgetSize.height() / 2);
             MouseMove(m_rootWidget.get(), start, QPoint(0, 0));
             m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTimeFn()), AZ::ScriptTimePoint() });
 
@@ -204,12 +211,15 @@ namespace UnitTest
         ::testing::NiceMock<MockWindowRequests> m_mockWindowRequests;
         ViewportMouseCursorRequestImpl m_viewportMouseCursorRequests;
         AtomToolsFramework::ModularCameraViewportContext* m_cameraViewportContextView = nullptr;
+        AZStd::unique_ptr<AZ::SettingsRegistryInterface> m_settingsRegistry;
     };
 
     const AzFramework::ViewportId ModularViewportCameraControllerFixture::TestViewportId = AzFramework::ViewportId(0);
 
     TEST_F(ModularViewportCameraControllerFixture, MouseMovementDoesNotAccumulateExcessiveDriftInModularViewportCameraWithVaryingDeltaTime)
     {
+        SandboxEditor::SetCameraCaptureCursorForLook(false);
+
         // Given
         PrepareCollaborators();
 
@@ -242,6 +252,8 @@ namespace UnitTest
         ModularViewportCameraControllerDeltaTimeParamFixture,
         MouseMovementDoesNotAccumulateExcessiveDriftInModularViewportCameraWithFixedDeltaTime)
     {
+        SandboxEditor::SetCameraCaptureCursorForLook(false);
+
         // Given
         PrepareCollaborators();
 
@@ -263,4 +275,92 @@ namespace UnitTest
 
     INSTANTIATE_TEST_CASE_P(
         All, ModularViewportCameraControllerDeltaTimeParamFixture, testing::Values(1.0f / 60.0f, 1.0f / 50.0f, 1.0f / 30.0f));
+
+    TEST_F(ModularViewportCameraControllerFixture, MouseMovementOrientatesCameraWhenCursorIsCaptured)
+    {
+        // Given
+        PrepareCollaborators();
+        // ensure cursor is captured
+        SandboxEditor::SetCameraCaptureCursorForLook(true);
+
+        const float deltaTime = 1.0f / 60.0f;
+
+        // When
+        // move to the center of the screen
+        auto start = QPoint(WidgetSize.width() / 2, WidgetSize.height() / 2);
+        MouseMove(m_rootWidget.get(), start, QPoint(0, 0));
+        m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+
+        const auto mouseDelta = QPoint(5, 0);
+
+        // initial movement to begin the camera behavior
+        MousePressAndMove(m_rootWidget.get(), start, mouseDelta, Qt::MouseButton::RightButton);
+        m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+
+        // move the cursor right
+        for (int i = 0; i < 50; ++i)
+        {
+            MousePressAndMove(m_rootWidget.get(), start + mouseDelta, mouseDelta, Qt::MouseButton::RightButton);
+            m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+        }
+
+        // move the cursor left (do an extra iteration moving left to account for the initial dead-zone)
+        for (int i = 0; i < 51; ++i)
+        {
+            MousePressAndMove(m_rootWidget.get(), start + mouseDelta, -mouseDelta, Qt::MouseButton::RightButton);
+            m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+        }
+
+        QTest::mouseRelease(m_rootWidget.get(), Qt::MouseButton::RightButton, Qt::KeyboardModifier::NoModifier, start + mouseDelta);
+        m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+
+        // Then
+        // retrieve the amount of yaw rotation
+        const AZ::Quaternion cameraRotation = m_cameraViewportContextView->GetCameraTransform().GetRotation();
+        const auto eulerAngles = AzFramework::EulerAngles(AZ::Matrix3x3::CreateFromQuaternion(cameraRotation));
+
+        // camera should be back at the center (no yaw)
+        using ::testing::FloatNear;
+        EXPECT_THAT(eulerAngles.GetZ(), FloatNear(0.0f, 0.001f));
+
+        // Clean-up
+        HaltCollaborators();
+    }
+
+    TEST_F(ModularViewportCameraControllerFixture, CameraDoesNotContinueToRotateGivenNoInputWhenCaptured)
+    {
+        // Given
+        PrepareCollaborators();
+        SandboxEditor::SetCameraCaptureCursorForLook(true);
+
+        const float deltaTime = 1.0f / 60.0f;
+
+        // When
+        // move to the center of the screen
+        auto start = QPoint(WidgetSize.width() / 2, WidgetSize.height() / 2);
+        MouseMove(m_rootWidget.get(), start, QPoint(0, 0));
+        m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+
+        // will move a small amount initially
+        const auto mouseDelta = QPoint(5, 0);
+        MousePressAndMove(m_rootWidget.get(), start, mouseDelta, Qt::MouseButton::RightButton);
+
+        // ensure further updates to not continue to rotate
+        for (int i = 0; i < 50; ++i)
+        {
+            m_controllerList->UpdateViewport({ TestViewportId, AzFramework::FloatSeconds(deltaTime), AZ::ScriptTimePoint() });
+        }
+
+        // Then
+        // ensure the camera rotation is no longer the identity
+        const AZ::Quaternion cameraRotation = m_cameraViewportContextView->GetCameraTransform().GetRotation();
+        const auto eulerAngles = AzFramework::EulerAngles(AZ::Matrix3x3::CreateFromQuaternion(cameraRotation));
+
+        // initial amount of rotation after first mouse move
+        using ::testing::FloatNear;
+        EXPECT_THAT(eulerAngles.GetZ(), FloatNear(-0.025f, 0.001f));
+
+        // Clean-up
+        HaltCollaborators();
+    }
 } // namespace UnitTest

Code/Editor/ViewportManipulatorController.cpp

@@ -12,6 +12,7 @@
 #include <AzToolsFramework/ViewportSelection/EditorInteractionSystemViewportSelectionRequestBus.h>
 #include <AzFramework/Input/Devices/Mouse/InputDeviceMouse.h>
 #include <AzFramework/Input/Devices/Keyboard/InputDeviceKeyboard.h>
+#include <AzFramework/Input/Buses/Requests/InputSystemCursorRequestBus.h>
 #include <AzFramework/Viewport/ScreenGeometry.h>
 #include <AzCore/Script/ScriptTimePoint.h>
 
@@ -112,9 +113,9 @@ namespace SandboxEditor
                 AzFramework::WindowRequestBus::EventResult(
                     windowSize, event.m_windowHandle, &AzFramework::WindowRequestBus::Events::GetClientAreaSize);
 
-                auto screenPoint = AzFramework::ScreenPoint(
-                    static_cast<int>(position->m_normalizedPosition.GetX() * windowSize.m_width),
-                    static_cast<int>(position->m_normalizedPosition.GetY() * windowSize.m_height));
+                const auto screenPoint = AzFramework::ScreenPoint(
+                    aznumeric_cast<int>(position->m_normalizedPosition.GetX() * windowSize.m_width),
+                    aznumeric_cast<int>(position->m_normalizedPosition.GetY() * windowSize.m_height));
 
                 m_mouseInteraction.m_mousePick.m_screenCoordinates = screenPoint;
                 AZStd::optional<ProjectedViewportRay> ray;
@@ -207,20 +208,27 @@ namespace SandboxEditor
                 ? &InteractionBus::Events::InternalHandleMouseManipulatorInteraction
                 : &InteractionBus::Events::InternalHandleMouseViewportInteraction;
 
-            const auto mouseInteractionEvent = [mouseInteraction, event = eventType.value(), wheelDelta] {
+            auto currentCursorState = AzFramework::SystemCursorState::Unknown;
+            AzFramework::InputSystemCursorRequestBus::EventResult(
+                currentCursorState, event.m_inputChannel.GetInputDevice().GetInputDeviceId(),
+                &AzFramework::InputSystemCursorRequestBus::Events::GetSystemCursorState);
+
+            const auto mouseInteractionEvent = [mouseInteraction, event = eventType.value(), wheelDelta,
+                                                cursorCaptured = currentCursorState == AzFramework::SystemCursorState::ConstrainedAndHidden]
+            {
                 switch (event)
                 {
                 case MouseEvent::Up:
                 case MouseEvent::Down:
                 case MouseEvent::Move:
                 case MouseEvent::DoubleClick:
-                    return MouseInteractionEvent(AZStd::move(mouseInteraction), event);
+                    return MouseInteractionEvent(AZStd::move(mouseInteraction), event, cursorCaptured);
                 case MouseEvent::Wheel:
                     return MouseInteractionEvent(AZStd::move(mouseInteraction), wheelDelta);
                 }
 
                 AZ_Assert(false, "Unhandled MouseEvent");
-                return MouseInteractionEvent(MouseInteraction{}, MouseEvent::Up);
+                return MouseInteractionEvent(MouseInteraction{}, MouseEvent::Up, false);
             }();
 
             InteractionBus::EventResult(

Code/Framework/AzCore/AzCore/std/math.h

@@ -22,6 +22,8 @@ namespace AZStd
     using std::exp2;
     using std::floor;
     using std::fmod;
+    using std::llround;
+    using std::lround;
     using std::pow;
     using std::round;
     using std::sin;

Code/Framework/AzFramework/AzFramework/Viewport/CameraInput.cpp

@@ -144,6 +144,7 @@ namespace AzFramework
         if (const auto& cursor = AZStd::get_if<CursorEvent>(&event))
         {
             m_cursorState.SetCurrentPosition(cursor->m_position);
+            m_cursorState.SetCaptured(cursor->m_captured);
         }
         else if (const auto& horizontalMotion = AZStd::get_if<HorizontalMotionEvent>(&event))
         {
@@ -790,17 +791,24 @@ namespace AzFramework
                 const auto* position = inputChannel.GetCustomData<AzFramework::InputChannel::PositionData2D>();
                 AZ_Assert(position, "Expected PositionData2D but found nullptr");
 
-                return CursorEvent{ ScreenPoint(
-                    static_cast<int>(position->m_normalizedPosition.GetX() * windowSize.m_width),
-                    static_cast<int>(position->m_normalizedPosition.GetY() * windowSize.m_height)) };
+                auto currentCursorState = AzFramework::SystemCursorState::Unknown;
+                AzFramework::InputSystemCursorRequestBus::EventResult(
+                    currentCursorState, inputDeviceId, &AzFramework::InputSystemCursorRequestBus::Events::GetSystemCursorState);
+
+                const auto x = position->m_normalizedPosition.GetX() * aznumeric_cast<float>(windowSize.m_width);
+                const auto y = position->m_normalizedPosition.GetY() * aznumeric_cast<float>(windowSize.m_height);
+                return CursorEvent{ ScreenPoint(aznumeric_cast<int>(AZStd::lround(x)), aznumeric_cast<int>(AZStd::lround(y))),
+                                    currentCursorState == AzFramework::SystemCursorState::ConstrainedAndHidden };
             }
             else if (inputChannelId == InputDeviceMouse::Movement::X)
             {
-                return HorizontalMotionEvent{ aznumeric_cast<int>(inputChannel.GetValue()) };
+                const auto x = inputChannel.GetValue();
+                return HorizontalMotionEvent{ aznumeric_cast<int>(AZStd::lround(x)) };
             }
             else if (inputChannelId == InputDeviceMouse::Movement::Y)
             {
-                return VerticalMotionEvent{ aznumeric_cast<int>(inputChannel.GetValue()) };
+                const auto y = inputChannel.GetValue();
+                return VerticalMotionEvent{ aznumeric_cast<int>(AZStd::lround(y)) };
             }
             else if (inputChannelId == InputDeviceMouse::Movement::Z)
             {

Code/Framework/AzFramework/AzFramework/Viewport/CameraInput.h

@@ -88,6 +88,7 @@ namespace AzFramework
     struct CursorEvent
     {
         ScreenPoint m_position;
+        bool m_captured = false;
     };
 
     struct ScrollEvent

Code/Framework/AzFramework/AzFramework/Viewport/CursorState.h

@@ -21,6 +21,8 @@ namespace AzFramework
         [[nodiscard]] ScreenVector CursorDelta() const;
         //! Call this in a 'handle event' call to update the most recent cursor position.
         void SetCurrentPosition(const ScreenPoint& currentPosition);
+        //! Set whether the cursor is currently being constrained (and hidden).
+        void SetCaptured(bool captured);
         //! Call this in an 'update' call to copy the current cursor position to the last
         //! cursor position.
         void Update();
@@ -28,8 +30,14 @@ namespace AzFramework
     private:
         AZStd::optional<ScreenPoint> m_lastCursorPosition;
         AZStd::optional<ScreenPoint> m_currentCursorPosition;
+        bool m_captured = false;
     };
 
+    inline void CursorState::SetCaptured(const bool captured)
+    {
+        m_captured = captured;
+    }
+
     inline void CursorState::SetCurrentPosition(const ScreenPoint& currentPosition)
     {
         m_currentCursorPosition = currentPosition;
@@ -44,9 +52,16 @@ namespace AzFramework
 
     inline void CursorState::Update()
     {
-        if (m_currentCursorPosition.has_value())
+        if (!m_captured)
+        {
+            if (m_currentCursorPosition.has_value())
+            {
+                m_lastCursorPosition = m_currentCursorPosition;
+            }
+        }
+        else
         {
-            m_lastCursorPosition = m_currentCursorPosition;
+            m_currentCursorPosition = m_lastCursorPosition;
         }
     }
 } // namespace AzFramework

Code/Framework/AzManipulatorTestFramework/Source/AzManipulatorTestFrameworkUtils.cpp

@@ -122,7 +122,7 @@ namespace AzManipulatorTestFramework
 
     MouseInteractionEvent CreateMouseInteractionEvent(const MouseInteraction& mouseInteraction, MouseEvent event)
     {
-        return MouseInteractionEvent(mouseInteraction, event);
+        return MouseInteractionEvent(mouseInteraction, event, /*captured=*/false);
     }
 
     void DispatchMouseInteractionEvent(const MouseInteractionEvent& event)

Code/Framework/AzToolsFramework/AzToolsFramework/Input/QtEventToAzInputManager.cpp

@@ -158,6 +158,16 @@ namespace AzToolsFramework
         SetImplementation(nullptr);
     }
 
+    void QtEventToAzInputMapper::EditorQtMouseDevice::SetSystemCursorState(const AzFramework::SystemCursorState systemCursorState)
+    {
+        m_systemCursorState = systemCursorState;
+    }
+
+    AzFramework::SystemCursorState QtEventToAzInputMapper::EditorQtMouseDevice::GetSystemCursorState() const
+    {
+        return m_systemCursorState;
+    }
+
     QtEventToAzInputMapper::QtEventToAzInputMapper(QWidget* sourceWidget, int syntheticDeviceId)
         : QObject(sourceWidget)
         , m_sourceWidget(sourceWidget)
@@ -210,12 +220,15 @@ namespace AzToolsFramework
         if (m_capturingCursor != enabled)
         {
             m_capturingCursor = enabled;
+
             if (m_capturingCursor)
             {
+                m_mouseDevice->SetSystemCursorState(AzFramework::SystemCursorState::ConstrainedAndHidden);
                 qApp->setOverrideCursor(Qt::BlankCursor);
             }
             else
             {
+                m_mouseDevice->SetSystemCursorState(AzFramework::SystemCursorState::UnconstrainedAndVisible);
                 qApp->restoreOverrideCursor();
             }
         }
@@ -238,10 +251,22 @@ namespace AzToolsFramework
             return false;
         }
 
-        // If our focus changes, go ahead and reset all input devices.
         if (eventType == QEvent::FocusIn || eventType == QEvent::FocusOut)
         {
+            // If our focus changes, go ahead and reset all input devices.
             HandleFocusChange(event);
+
+            // If we focus in on the source widget and the mouse is contained in its
+            // bounds, refresh the cached cursor position to ensure it is up to date (this
+            // ensures cursor positions are refreshed correctly with context menu focus changes)
+            if (eventType == QEvent::FocusIn)
+            {
+                const auto widgetCursorPosition = m_sourceWidget->mapFromGlobal(QCursor::pos());
+                if (m_sourceWidget->geometry().contains(widgetCursorPosition))
+                {
+                    HandleMouseMoveEvent(widgetCursorPosition);
+                }
+            }
         }
         // Map key events to input channels.
         // ShortcutOverride is used in lieu of KeyPress for high priority input channels like Alt
@@ -249,7 +274,7 @@ namespace AzToolsFramework
         else if (
             eventType == QEvent::Type::KeyPress || eventType == QEvent::Type::KeyRelease || eventType == QEvent::Type::ShortcutOverride)
         {
-            QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
+            auto keyEvent = static_cast<QKeyEvent*>(event);
             HandleKeyEvent(keyEvent);
         }
         // Map mouse events to input channels.
@@ -257,20 +282,20 @@ namespace AzToolsFramework
             eventType == QEvent::Type::MouseButtonPress || eventType == QEvent::Type::MouseButtonRelease ||
             eventType == QEvent::Type::MouseButtonDblClick)
         {
-            QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
+            auto mouseEvent = static_cast<QMouseEvent*>(event);
             HandleMouseButtonEvent(mouseEvent);
         }
         // Map mouse movement to the movement input channels.
         // This includes SystemCursorPosition alongside Movement::X and Movement::Y.
         else if (eventType == QEvent::Type::MouseMove)
         {
-            QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
-            HandleMouseMoveEvent(mouseEvent);
+            auto mouseEvent = static_cast<QMouseEvent*>(event);
+            HandleMouseMoveEvent(mouseEvent->pos());
         }
         // Map wheel events to the mouse Z movement channel.
         else if (eventType == QEvent::Type::Wheel)
         {
-            QWheelEvent* wheelEvent = static_cast<QWheelEvent*>(event);
+            auto wheelEvent = static_cast<QWheelEvent*>(event);
             HandleWheelEvent(wheelEvent);
         }
 
@@ -345,9 +370,8 @@ namespace AzToolsFramework
         return QPoint{ denormalizedX, denormalizedY };
     }
 
-    void QtEventToAzInputMapper::HandleMouseMoveEvent(QMouseEvent* mouseEvent)
+    void QtEventToAzInputMapper::HandleMouseMoveEvent(const QPoint& cursorPosition)
     {
-        const QPoint cursorPosition = mouseEvent->pos();
         const QPoint cursorDelta = cursorPosition - m_previousCursorPosition;
 
         m_mouseDevice->m_cursorPositionData2D->m_normalizedPosition = WidgetPositionToNormalizedPosition(cursorPosition);
@@ -357,17 +381,14 @@ namespace AzToolsFramework
 
         if (m_capturingCursor)
         {
-            // Reset our cursor position to the previous point.
-            const QPoint targetScreenPosition = m_sourceWidget->mapToGlobal(m_previousCursorPosition);
-            AzQtComponents::SetCursorPos(targetScreenPosition);
-
-            // Even though we just set the cursor position, there are edge cases such as remote desktop that will leave
-            // the cursor position unchanged. For safety, we re-cache our last cursor position for delta generation.
-            const QPoint actualWidgetPosition = m_sourceWidget->mapFromGlobal(QCursor::pos());
-            m_mouseDevice->m_cursorPositionData2D->m_normalizedPosition = WidgetPositionToNormalizedPosition(actualWidgetPosition);
+            // Reset our cursor position to the previous point
+            const QPoint screenCursorPosition = m_sourceWidget->mapToGlobal(m_previousCursorPosition);
+            AzQtComponents::SetCursorPos(screenCursorPosition);
+        }
+        else
+        {
+            m_previousCursorPosition = cursorPosition;
         }
-
-        m_previousCursorPosition = cursorPosition;
     }
 
     void QtEventToAzInputMapper::HandleKeyEvent(QKeyEvent* keyEvent)

Code/Framework/AzToolsFramework/AzToolsFramework/Input/QtEventToAzInputManager.h

@@ -105,7 +105,14 @@ namespace AzToolsFramework
         public:
             EditorQtMouseDevice(AzFramework::InputDeviceId id);
 
+            // AzFramework::InputDeviceMouse overrides ...
+            void SetSystemCursorState(AzFramework::SystemCursorState systemCursorState) override;
+            AzFramework::SystemCursorState GetSystemCursorState() const override;
+
             friend class QtEventToAzInputMapper;
+
+        private:
+            AzFramework::SystemCursorState m_systemCursorState = AzFramework::SystemCursorState::UnconstrainedAndVisible;
         };
 
         // Emits InputChannelUpdated if channel has transitioned in state (i.e. has gone from active to inactive or vice versa).
@@ -122,7 +129,7 @@ namespace AzToolsFramework
         // Handle mouse click events.
         void HandleMouseButtonEvent(QMouseEvent* mouseEvent);
         // Handle mouse move events.
-        void HandleMouseMoveEvent(QMouseEvent* mouseEvent);
+        void HandleMouseMoveEvent(const QPoint& cursorPosition);
         // Handles key press / release events (or ShortcutOverride events for keys listed in m_highPriorityKeys).
         void HandleKeyEvent(QKeyEvent* keyEvent);
         // Handles mouse wheel events.

Code/Framework/AzToolsFramework/AzToolsFramework/UnitTest/AzToolsFrameworkTestHelpers.cpp

@@ -115,7 +115,7 @@ namespace UnitTest
                     handled, AzToolsFramework::GetEntityContextId(),
                     &EditorInteractionSystemViewportSelectionRequestBus::Events::InternalHandleMouseViewportInteraction,
                     AzToolsFramework::ViewportInteraction::MouseInteractionEvent(
-                        mouseInteraction, AzToolsFramework::ViewportInteraction::MouseEvent::Down));
+                        mouseInteraction, AzToolsFramework::ViewportInteraction::MouseEvent::Down, /*captured=*/false));
                 return handled;
             }
         }

Code/Framework/AzToolsFramework/AzToolsFramework/Viewport/EditorContextMenu.cpp

@@ -41,7 +41,8 @@ namespace AzToolsFramework
                 ViewportInteraction::QPointFromScreenPoint(mouseInteraction.m_mouseInteraction.m_mousePick.m_screenCoordinates);
 
             // if the mouse hasn't moved, open the pop-up menu
-            if ((currentScreenCoords - contextMenu.m_clickPoint).manhattanLength() < ed_contextMenuDisplayThreshold)
+            if ((currentScreenCoords - contextMenu.m_clickPoint).manhattanLength() < ed_contextMenuDisplayThreshold &&
+                !mouseInteraction.m_captured)
             {
                 QWidget* parent = nullptr;
                 ViewportInteraction::MainEditorViewportInteractionRequestBus::EventResult(

Code/Framework/AzToolsFramework/AzToolsFramework/Viewport/ViewportTypes.h

@@ -212,9 +212,10 @@ namespace AzToolsFramework
             static void Reflect(AZ::SerializeContext& context);
 
             //! Constructor to create a default MouseInteractionEvent
-            MouseInteractionEvent(MouseInteraction mouseInteraction, const MouseEvent mouseEvent)
+            MouseInteractionEvent(MouseInteraction mouseInteraction, const MouseEvent mouseEvent, const bool captured)
                 : m_mouseInteraction(std::move(mouseInteraction))
                 , m_mouseEvent(mouseEvent)
+                , m_captured(captured)
             {
             }
 
@@ -228,6 +229,7 @@ namespace AzToolsFramework
 
             MouseInteraction m_mouseInteraction; //!< Mouse state.
             MouseEvent m_mouseEvent; //!< Mouse event.
+            bool m_captured = false; //!< Is the mouse cursor being captured during the event.
 
             //! Special friend function to return the mouse wheel delta (scroll amount)
             //! if the event was of type MouseEvent::Wheel.