/** Handle a click on the specified editor viewport client */
bool FComponentVisualizerManager::HandleClick(FEditorViewportClient* InViewportClient, HHitProxy* HitProxy, const FViewportClick& Click)
{
bool bHandled = HandleProxyForComponentVis(InViewportClient, HitProxy, Click);
if (bHandled && Click.GetKey() == EKeys::RightMouseButton)
{
TSharedPtr<SWidget> MenuWidget = GenerateContextMenuForComponentVis();
if (MenuWidget.IsValid())
{
TSharedPtr<SEditorViewport> ViewportWidget = InViewportClient->GetEditorViewportWidget();
if (ViewportWidget.IsValid())
{
FSlateApplication::Get().PushMenu(
ViewportWidget.ToSharedRef(),
FWidgetPath(),
MenuWidget.ToSharedRef(),
FSlateApplication::Get().GetCursorPos(),
FPopupTransitionEffect(FPopupTransitionEffect::ContextMenu));
return true;
}
}
}
return false;
}
bool FSplineComponentVisualizer::VisProxyHandleClick(FLevelEditorViewportClient* InViewportClient, HComponentVisProxy* VisProxy, const FViewportClick& Click)
{
if(VisProxy && VisProxy->Component.IsValid())
{
const USplineComponent* SplineComp = CastChecked<const USplineComponent>(VisProxy->Component.Get());
SplineCompPropName = GetComponentPropertyName(SplineComp);
if(SplineCompPropName.IsValid())
{
AActor* OldSplineOwningActor = SplineOwningActor.Get();
SplineOwningActor = SplineComp->GetOwner();
if (OldSplineOwningActor != SplineOwningActor)
{
// Reset selection state if we are selecting a different actor to the one previously selected
ChangeSelectionState(INDEX_NONE, false);
SelectedSegmentIndex = INDEX_NONE;
SelectedTangentHandle = INDEX_NONE;
SelectedTangentHandleType = ESelectedTangentHandle::None;
}
if (VisProxy->IsA(HSplineKeyProxy::StaticGetType()))
{
// Control point clicked
HSplineKeyProxy* KeyProxy = (HSplineKeyProxy*)VisProxy;
// Modify the selection state, unless right-clicking on an already selected key
if (Click.GetKey() != EKeys::RightMouseButton || !SelectedKeys.Contains(KeyProxy->KeyIndex))
{
ChangeSelectionState(KeyProxy->KeyIndex, InViewportClient->IsCtrlPressed());
}
SelectedSegmentIndex = INDEX_NONE;
SelectedTangentHandle = INDEX_NONE;
SelectedTangentHandleType = ESelectedTangentHandle::None;
if (LastKeyIndexSelected == INDEX_NONE)
{
SplineOwningActor = nullptr;
return false;
}
CachedRotation = SplineComp->GetQuaternionAtSplinePoint(LastKeyIndexSelected, ESplineCoordinateSpace::World);
return true;
}
else if (VisProxy->IsA(HSplineSegmentProxy::StaticGetType()))
{
// Spline segment clicked
// Divide segment into subsegments and test each subsegment against ray representing click position and camera direction.
// Closest encounter with the spline determines the spline position.
const int32 NumSubdivisions = 16;
HSplineSegmentProxy* SegmentProxy = (HSplineSegmentProxy*)VisProxy;
ChangeSelectionState(SegmentProxy->SegmentIndex, InViewportClient->IsCtrlPressed());
SelectedSegmentIndex = SegmentProxy->SegmentIndex;
SelectedTangentHandle = INDEX_NONE;
SelectedTangentHandleType = ESelectedTangentHandle::None;
if (LastKeyIndexSelected == INDEX_NONE)
{
SplineOwningActor = nullptr;
return false;
}
CachedRotation = SplineComp->GetQuaternionAtSplinePoint(LastKeyIndexSelected, ESplineCoordinateSpace::World);
float SubsegmentStartKey = static_cast<float>(SelectedSegmentIndex);
FVector SubsegmentStart = SplineComp->GetLocationAtSplineInputKey(SubsegmentStartKey, ESplineCoordinateSpace::World);
float ClosestDistance = TNumericLimits<float>::Max();
FVector BestLocation = SubsegmentStart;
for (int32 Step = 1; Step < NumSubdivisions; Step++)
{
const float SubsegmentEndKey = SelectedSegmentIndex + Step / static_cast<float>(NumSubdivisions);
const FVector SubsegmentEnd = SplineComp->GetLocationAtSplineInputKey(SubsegmentEndKey, ESplineCoordinateSpace::World);
FVector SplineClosest;
FVector RayClosest;
FMath::SegmentDistToSegmentSafe(SubsegmentStart, SubsegmentEnd, Click.GetOrigin(), Click.GetOrigin() + Click.GetDirection() * 50000.0f, SplineClosest, RayClosest);
const float Distance = FVector::DistSquared(SplineClosest, RayClosest);
if (Distance < ClosestDistance)
{
ClosestDistance = Distance;
BestLocation = SplineClosest;
}
SubsegmentStartKey = SubsegmentEndKey;
SubsegmentStart = SubsegmentEnd;
}
SelectedSplinePosition = BestLocation;
return true;
}
else if (VisProxy->IsA(HSplineTangentHandleProxy::StaticGetType()))
{
// Tangent handle clicked
HSplineTangentHandleProxy* KeyProxy = (HSplineTangentHandleProxy*)VisProxy;
// Note: don't change key selection when a tangent handle is clicked
SelectedSegmentIndex = INDEX_NONE;
SelectedTangentHandle = KeyProxy->KeyIndex;
SelectedTangentHandleType = KeyProxy->bArriveTangent ? ESelectedTangentHandle::Arrive : ESelectedTangentHandle::Leave;
CachedRotation = SplineComp->GetQuaternionAtSplinePoint(SelectedTangentHandle, ESplineCoordinateSpace::World);
return true;
}
}
else
{
SplineOwningActor = nullptr;
}
}
return false;
}
bool FPlacementMode::HandleClick(FEditorViewportClient* InViewportClient, HHitProxy *HitProxy, const FViewportClick &Click )
{
bool Handled = false;
if ( IsCurrentlyPlacing() )
{
if ( Click.GetKey() == EKeys::LeftMouseButton )
{
TArray< UObject* > Assets;
for (int Index = 0; Index < AssetsToPlace.Num(); Index++)
{
if ( AssetsToPlace[Index].IsValid() )
{
Assets.Add( AssetsToPlace[Index].Get() );
}
}
TArray<AActor*> OutNewActors;
const bool bCreateDropPreview = false;
const bool SelectActor = false;
const FViewport* const Viewport = Click.GetViewportClient()->Viewport;
bool AllAssetsCanBeDropped = true;
// Determine if we can drop the assets
for ( auto AssetIt = Assets.CreateConstIterator(); AssetIt; ++AssetIt )
{
UObject* Asset = *AssetIt;
FDropQuery DropResult = InViewportClient->CanDropObjectsAtCoordinates( Viewport->GetMouseX(), Viewport->GetMouseY(), FAssetData( Asset ) );
if ( !DropResult.bCanDrop )
{
// At least one of the assets can't be dropped.
InViewportClient->DestroyDropPreviewActors();
AllAssetsCanBeDropped = false;
CreatedPreviewActors = false;
}
}
if ( AllAssetsCanBeDropped )
{
if ( !Click.IsControlDown() )
{
ClearAssetsToPlace();
IPlacementModeModule::Get().BroadcastStoppedPlacing( true );
InViewportClient->SetRequiredCursorOverride( true, EMouseCursor::GrabHand );
}
InViewportClient->DropObjectsAtCoordinates( Viewport->GetMouseX(), Viewport->GetMouseY(), Assets, OutNewActors, false, bCreateDropPreview, SelectActor, PlacementFactory.Get() );
for (int Index = 0; Index < OutNewActors.Num(); Index++)
{
if ( OutNewActors[Index] != NULL )
{
PlacedActorsThisTrackingSession = true;
PlacedActors.Add( OutNewActors[Index] );
}
}
if ( !Click.IsControlDown() )
{
SelectPlacedActors();
ClearAssetsToPlace();
}
Handled = true;
}
}
else
{
InViewportClient->DestroyDropPreviewActors();
CreatedPreviewActors = false;
StopPlacing();
}
}
if ( !Handled )
{
Handled = FEdMode::HandleClick(InViewportClient, HitProxy, Click);
}
return Handled;
}