FReply FSceneViewport::OnMouseButtonDoubleClick( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent )
{
// Start a new reply state
CurrentReplyState = FReply::Handled();
// Note: When double-clicking, the following message sequence is sent:
// WM_*BUTTONDOWN
// WM_*BUTTONUP
// WM_*BUTTONDBLCLK (Needs to set the KeyStates[*] to true)
// WM_*BUTTONUP
KeyStateMap.Add( InMouseEvent.GetEffectingButton(), true );
UpdateCachedMousePos( InGeometry, InMouseEvent );
UpdateCachedGeometry(InGeometry);
if( ViewportClient && GetSizeXY() != FIntPoint::ZeroValue )
{
// Switch to the viewport clients world before processing input
FScopedConditionalWorldSwitcher WorldSwitcher( ViewportClient );
if (!ViewportClient->InputKey(this, InMouseEvent.GetUserIndex(), InMouseEvent.GetEffectingButton(), IE_DoubleClick))
{
CurrentReplyState = FReply::Unhandled();
}
}
return CurrentReplyState;
}
FReply FSceneViewport::OnMouseWheel( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent )
{
// Start a new reply state
CurrentReplyState = FReply::Handled();
UpdateCachedMousePos( InGeometry, InMouseEvent );
UpdateCachedGeometry(InGeometry);
if( ViewportClient && GetSizeXY() != FIntPoint::ZeroValue )
{
// Switch to the viewport clients world before processing input
FScopedConditionalWorldSwitcher WorldSwitcher( ViewportClient );
// The viewport client accepts two different keys depending on the direction of scroll.
FKey const ViewportClientKey = InMouseEvent.GetWheelDelta() < 0 ? EKeys::MouseScrollDown : EKeys::MouseScrollUp;
// Pressed and released should be sent
ViewportClient->InputKey(this, InMouseEvent.GetUserIndex(), ViewportClientKey, IE_Pressed);
ViewportClient->InputKey(this, InMouseEvent.GetUserIndex(), ViewportClientKey, IE_Released);
ViewportClient->InputAxis(this, InMouseEvent.GetUserIndex(), EKeys::MouseWheelAxis, InMouseEvent.GetWheelDelta(), FApp::GetDeltaTime());
}
return CurrentReplyState;
}
FReply FSceneViewport::OnMouseButtonUp( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent )
{
// Start a new reply state
CurrentReplyState = FReply::Handled();
KeyStateMap.Add( InMouseEvent.GetEffectingButton(), false );
UpdateModifierKeys( InMouseEvent );
UpdateCachedMousePos( InGeometry, InMouseEvent );
UpdateCachedGeometry(InGeometry);
// Switch to the viewport clients world before processing input
FScopedConditionalWorldSwitcher WorldSwitcher( ViewportClient );
bool bCursorVisible = true;
bool bReleaseMouse = true;
if( ViewportClient && GetSizeXY() != FIntPoint::ZeroValue )
{
if (!ViewportClient->InputKey(this, InMouseEvent.GetUserIndex(), InMouseEvent.GetEffectingButton(), IE_Released))
{
CurrentReplyState = FReply::Unhandled();
}
bCursorVisible = ViewportClient->GetCursor(this, GetMouseX(), GetMouseY()) != EMouseCursor::None;
bReleaseMouse =
bCursorVisible ||
ViewportClient->CaptureMouseOnClick() == EMouseCaptureMode::CaptureDuringMouseDown ||
( ViewportClient->CaptureMouseOnClick() == EMouseCaptureMode::CaptureDuringRightMouseDown && InMouseEvent.GetEffectingButton() == EKeys::RightMouseButton );
}
if (!((FApp::IsGame() && !GIsEditor) || bIsPlayInEditorViewport) || bReleaseMouse)
{
// On mouse up outside of the game (editor viewport) or if the cursor is visible in game, we should make sure the mouse is no longer captured
// as long as the left or right mouse buttons are not still down
if( !InMouseEvent.IsMouseButtonDown( EKeys::RightMouseButton ) && !InMouseEvent.IsMouseButtonDown( EKeys::LeftMouseButton ))
{
if( bCursorHiddenDueToCapture )
{
bCursorHiddenDueToCapture = false;
CurrentReplyState.SetMousePos( MousePosBeforeHiddenDueToCapture );
MousePosBeforeHiddenDueToCapture = FIntPoint( -1, -1 );
}
CurrentReplyState.ReleaseMouseCapture();
if (bCursorVisible)
{
CurrentReplyState.ReleaseMouseLock();
}
}
}
return CurrentReplyState;
}
FReply FSceneViewport::OnTouchEnded( const FGeometry& MyGeometry, const FPointerEvent& TouchEvent )
{
// Start a new reply state
CurrentReplyState = FReply::Handled();
UpdateCachedMousePos(MyGeometry, TouchEvent);
UpdateCachedGeometry(MyGeometry);
if( ViewportClient )
{
// Switch to the viewport clients world before processing input
FScopedConditionalWorldSwitcher WorldSwitcher( ViewportClient );
const FVector2D TouchPosition = MyGeometry.AbsoluteToLocal(TouchEvent.GetLastScreenSpacePosition());
if( !ViewportClient->InputTouch( this, TouchEvent.GetUserIndex(), TouchEvent.GetPointerIndex(), ETouchType::Ended, TouchPosition, FDateTime::Now(), TouchEvent.GetTouchpadIndex()) )
{
CurrentReplyState = FReply::Unhandled();
}
}
return CurrentReplyState;
}
FReply FSceneViewport::OnMouseButtonDown( const FGeometry& InGeometry, const FPointerEvent& InMouseEvent )
{
// Start a new reply state
// Prevent throttling when interacting with the viewport so we can move around in it
CurrentReplyState = FReply::Handled().PreventThrottling();
KeyStateMap.Add(InMouseEvent.GetEffectingButton(), true);
UpdateModifierKeys( InMouseEvent );
UpdateCachedMousePos( InGeometry, InMouseEvent );
UpdateCachedGeometry(InGeometry);
// Switch to the viewport clients world before processing input
FScopedConditionalWorldSwitcher WorldSwitcher( ViewportClient );
if( ViewportClient && GetSizeXY() != FIntPoint::ZeroValue )
{
// If we're obtaining focus, we have to copy the modifier key states prior to processing this mouse button event, as this is the only point at which the mouse down
// event is processed when focus initially changes and the modifier keys need to be in-place to detect any unique drag-like events.
if ( !HasFocus() )
{
FModifierKeysState KeysState = FSlateApplication::Get().GetModifierKeys();
ApplyModifierKeys( KeysState );
}
const bool bAnyMenuWasVisible = FSlateApplication::Get().AnyMenusVisible();
// Process the mouse event
if (!ViewportClient->InputKey(this, InMouseEvent.GetUserIndex(), InMouseEvent.GetEffectingButton(), IE_Pressed))
{
CurrentReplyState = FReply::Unhandled();
}
// a new menu was opened if there was previously not a menu visible but now there is
const bool bNewMenuWasOpened = !bAnyMenuWasVisible && FSlateApplication::Get().AnyMenusVisible();
if (!ViewportClient->IgnoreInput() &&
!bNewMenuWasOpened && // We should not focus the viewport if a menu was opened as it would close the menu
( ViewportClient->CaptureMouseOnClick() == EMouseCaptureMode::CapturePermanently ||
ViewportClient->CaptureMouseOnClick() == EMouseCaptureMode::CaptureDuringMouseDown ||
( ViewportClient->CaptureMouseOnClick() == EMouseCaptureMode::CaptureDuringRightMouseDown && InMouseEvent.GetEffectingButton() == EKeys::RightMouseButton ) ) )
{
TSharedRef<SViewport> ViewportWidgetRef = ViewportWidget.Pin().ToSharedRef();
// Mouse down should focus viewport for user input
CurrentReplyState.SetUserFocus(ViewportWidgetRef, EFocusCause::SetDirectly, true);
UWorld* World = ViewportClient->GetWorld();
if (World && World->IsGameWorld() && World->GetFirstPlayerController())
{
CurrentReplyState.CaptureMouse(ViewportWidgetRef);
CurrentReplyState.LockMouseToWidget(ViewportWidgetRef);
bool bShouldShowMouseCursor = World->GetFirstPlayerController()->ShouldShowMouseCursor();
if (ViewportClient->HideCursorDuringCapture() && bShouldShowMouseCursor)
{
bCursorHiddenDueToCapture = true;
MousePosBeforeHiddenDueToCapture = FIntPoint( InMouseEvent.GetScreenSpacePosition().X, InMouseEvent.GetScreenSpacePosition().Y );
}
if (bCursorHiddenDueToCapture || !bShouldShowMouseCursor)
{
CurrentReplyState.UseHighPrecisionMouseMovement(ViewportWidgetRef);
}
}
else
{
CurrentReplyState.UseHighPrecisionMouseMovement(ViewportWidgetRef);
}
}
}
// Re-set prevent throttling here as it can get reset when inside of InputKey()
CurrentReplyState.PreventThrottling();
return CurrentReplyState;
}
int32 UKismetInputLibrary::PointerEvent_GetUserIndex(const FPointerEvent& Input)
{
return Input.GetUserIndex();
}