Merge pull request #4725 from aws-lumberyard-dev/hultonha_LYN-7394_focus_cursor

Updates to support 'lock'/'forbidden' cursor when in Focus Mode

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

@@ -244,6 +244,17 @@ namespace AzToolsFramework
 
         const auto eventType = event->type();
 
+        if (eventType == QEvent::Type::MouseMove)
+        {
+            // clear override cursor when moving outside of the viewport
+            const auto* mouseEvent = static_cast<const QMouseEvent*>(event);
+            if (m_overrideCursor && !m_sourceWidget->geometry().contains(m_sourceWidget->mapFromGlobal(mouseEvent->globalPos())))
+            {
+                qApp->restoreOverrideCursor();
+                m_overrideCursor = false;
+            }
+        }
+
         // Only accept mouse & key release events that originate from an object that is not our target widget,
         // as we don't want to erroneously intercept user input meant for another component.
         if (object != m_sourceWidget && eventType != QEvent::Type::KeyRelease && eventType != QEvent::Type::MouseButtonRelease)
@@ -262,7 +273,7 @@ namespace AzToolsFramework
             if (eventType == QEvent::FocusIn)
             {
                 const auto globalCursorPosition = QCursor::pos();
-                if (m_sourceWidget->geometry().contains(globalCursorPosition))
+                if (m_sourceWidget->geometry().contains(m_sourceWidget->mapFromGlobal(globalCursorPosition)))
                 {
                     HandleMouseMoveEvent(globalCursorPosition);
                 }
@@ -452,4 +463,32 @@ namespace AzToolsFramework
             }
         }
     }
+
+    static Qt::CursorShape QtCursorFromAzCursor(const ViewportInteraction::CursorStyleOverride cursorStyleOverride)
+    {
+        switch (cursorStyleOverride)
+        {
+        case ViewportInteraction::CursorStyleOverride::Forbidden:
+            return Qt::ForbiddenCursor;
+        default:
+            return Qt::ArrowCursor;
+        }
+    }
+
+    void QtEventToAzInputMapper::SetOverrideCursor(ViewportInteraction::CursorStyleOverride cursorStyleOverride)
+    {
+        ClearOverrideCursor();
+
+        qApp->setOverrideCursor(QtCursorFromAzCursor(cursorStyleOverride));
+        m_overrideCursor = true;
+    }
+
+    void QtEventToAzInputMapper::ClearOverrideCursor()
+    {
+        if (m_overrideCursor)
+        {
+            qApp->restoreOverrideCursor();
+            m_overrideCursor = false;
+        }
+    }
 } // namespace AzToolsFramework

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

@@ -15,10 +15,11 @@
 #include <AzFramework/Input/Channels/InputChannelDeltaWithSharedPosition2D.h>
 #include <AzFramework/Input/Channels/InputChannelDigitalWithSharedModifierKeyStates.h>
 #include <AzFramework/Input/Channels/InputChannelDigitalWithSharedPosition2D.h>
-
 #include <AzFramework/Input/Devices/Keyboard/InputDeviceKeyboard.h>
 #include <AzFramework/Input/Devices/Mouse/InputDeviceMouse.h>
 
+#include <AzToolsFramework/Viewport/ViewportMessages.h>
+
 #include <QEvent>
 #include <QObject>
 #include <QPoint>
@@ -55,6 +56,9 @@ namespace AzToolsFramework
         //! like a dolly or rotation, where mouse movement is important but cursor location is not.
         void SetCursorCaptureEnabled(bool enabled);
 
+        void SetOverrideCursor(ViewportInteraction::CursorStyleOverride cursorStyleOverride);
+        void ClearOverrideCursor();
+
         // QObject overrides...
         bool eventFilter(QObject* object, QEvent* event) override;
 
@@ -164,6 +168,8 @@ namespace AzToolsFramework
         bool m_enabled = true;
         // Flags whether or not the cursor is being constrained to the source widget (for invisible mouse movement).
         bool m_capturingCursor = false;
+        // Flags whether the cursor has been overridden.
+        bool m_overrideCursor = false;
 
         // Our viewport-specific AZ devices. We control their internal input channel states.
         AZStd::unique_ptr<EditorQtMouseDevice> m_mouseDevice;

Code/Framework/AzToolsFramework/AzToolsFramework/Viewport/ViewportMessages.h

@@ -302,6 +302,12 @@ namespace AzToolsFramework
 
         using EditorViewportInputTimeNowRequestBus = AZ::EBus<EditorViewportInputTimeNowRequests>;
 
+        //! The style of cursor override.
+        enum class CursorStyleOverride
+        {
+            Forbidden
+        };
+
         //! Viewport requests for managing the viewport cursor state.
         class ViewportMouseCursorRequests
         {
@@ -312,6 +318,10 @@ namespace AzToolsFramework
             virtual void EndCursorCapture() = 0;
             //! Is the mouse over the viewport.
             virtual bool IsMouseOver() const = 0;
+            //! Set the cursor style override.
+            virtual void SetOverrideCursor(CursorStyleOverride cursorStyleOverride) = 0;
+            //! Clear the cursor style override.
+            virtual void ClearOverrideCursor() = 0;
 
         protected:
             ~ViewportMouseCursorRequests() = default;

Code/Framework/AzToolsFramework/AzToolsFramework/ViewportSelection/EditorHelpers.cpp

@@ -44,6 +44,13 @@ AZ_CVAR(
     nullptr,
     AZ::ConsoleFunctorFlags::Null,
     "Display the aggregate world bounds for a given entity (the union of all world component Aabbs)");
+AZ_CVAR(
+    bool,
+    ed_useCursorLockIconInFocusMode,
+    false,
+    nullptr,
+    AZ::ConsoleFunctorFlags::Null,
+    "Use a lock icon when the cursor is over entities that cannot be interacted with");
 
 namespace AzToolsFramework
 {
@@ -222,6 +229,13 @@ namespace AzToolsFramework
         // verify if the entity Id corresponds to an entity that is focused; if not, halt selection.
         if (entityIdUnderCursor.IsValid() && !IsSelectableAccordingToFocusMode(entityIdUnderCursor))
         {
+            if (ed_useCursorLockIconInFocusMode)
+            {
+                ViewportInteraction::ViewportMouseCursorRequestBus::Event(
+                    viewportId, &ViewportInteraction::ViewportMouseCursorRequestBus::Events::SetOverrideCursor,
+                    ViewportInteraction::CursorStyleOverride::Forbidden);
+            }
+                
             if (mouseInteraction.m_mouseInteraction.m_mouseButtons.Left() &&
                     mouseInteraction.m_mouseEvent == ViewportInteraction::MouseEvent::Down ||
                 mouseInteraction.m_mouseEvent == ViewportInteraction::MouseEvent::DoubleClick)
@@ -232,6 +246,9 @@ namespace AzToolsFramework
             return CursorEntityIdQuery(AZ::EntityId(), AZ::EntityId());
         }
 
+        ViewportInteraction::ViewportMouseCursorRequestBus::Event(
+            viewportId, &ViewportInteraction::ViewportMouseCursorRequestBus::Events::ClearOverrideCursor);
+
         // container entity support - if the entity that is being selected is part of a closed container,
         // change the selection to the container instead.
         if (ContainerEntityInterface* containerEntityInterface = AZ::Interface<ContainerEntityInterface>::Get())