void SSlider::OnFocusLost(const FFocusEvent& InFocusEvent)
{
if (bControllerInputCaptured)
{
// Commit and reset state
CommitValue(ValueAttribute.Get());
ResetControllerState();
}
}
FReply SSlider::OnMouseMove( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent )
{
if (this->HasMouseCapture() && !IsLocked())
{
SetCursor((Orientation == Orient_Horizontal) ? EMouseCursor::ResizeLeftRight : EMouseCursor::ResizeUpDown);
CommitValue(PositionToValue(MyGeometry, MouseEvent.GetLastScreenSpacePosition()));
// Release capture for controller/keyboard when switching to mouse
ResetControllerState();
return FReply::Handled();
}
return FReply::Unhandled();
}
FReply SSlider::OnMouseButtonDown( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent )
{
if ((MouseEvent.GetEffectingButton() == EKeys::LeftMouseButton) && !IsLocked())
{
OnMouseCaptureBegin.ExecuteIfBound();
CommitValue(PositionToValue(MyGeometry, MouseEvent.GetLastScreenSpacePosition()));
// Release capture for controller/keyboard when switching to mouse.
ResetControllerState();
return FReply::Handled().CaptureMouse(SharedThis(this));
}
return FReply::Unhandled();
}
FReply SScrubWidget::OnMouseButtonUp( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent )
{
bool bHandleLeftMouseButton = MouseEvent.GetEffectingButton() == EKeys::LeftMouseButton && this->HasMouseCapture();
bool bHandleRightMouseButton = MouseEvent.GetEffectingButton() == EKeys::RightMouseButton && this->HasMouseCapture() && bAllowZoom;
if ( bHandleRightMouseButton )
{
bPanning = false;
FTrackScaleInfo TimeScaleInfo(ViewInputMin.Get(), ViewInputMax.Get(), 0.f, 0.f, MyGeometry.Size);
FVector2D CursorPos = MyGeometry.AbsoluteToLocal(MouseEvent.GetLastScreenSpacePosition());
float NewValue = TimeScaleInfo.LocalXToInput(CursorPos.X);
if( !bMouseMovedDuringPanning )
{
CreateContextMenu(NewValue, MouseEvent);
}
return FReply::Handled().ReleaseMouseCapture();
}
else if ( bHandleLeftMouseButton )
{
if(DraggingBar)
{
DraggingBar = false;
}
else if( bDragging )
{
OnEndSliderMovement.ExecuteIfBound( ValueAttribute.Get() );
}
else
{
FTrackScaleInfo TimeScaleInfo(ViewInputMin.Get(), ViewInputMax.Get(), 0.f, 0.f, MyGeometry.Size);
FVector2D CursorPos = MyGeometry.AbsoluteToLocal(MouseEvent.GetLastScreenSpacePosition());
float NewValue = TimeScaleInfo.LocalXToInput(CursorPos.X);
CommitValue( NewValue, true, false );
}
bDragging = false;
return FReply::Handled().ReleaseMouseCapture();
}
return FReply::Unhandled();
}
FReply SScrubWidget::OnMouseMove( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent )
{
// Bar Dragging
if(DraggingBar)
{
// Update bar if we are dragging
FVector2D CursorPos = MyGeometry.AbsoluteToLocal( MouseEvent.GetScreenSpacePosition() );
FTrackScaleInfo ScaleInfo(ViewInputMin.Get(), ViewInputMax.Get(), 0.f, 0.f, MyGeometry.Size);
float NewDataPos = FMath::Clamp( ScaleInfo.LocalXToInput(CursorPos.X), ViewInputMin.Get(), ViewInputMax.Get() );
OnBarDrag.ExecuteIfBound(DraggableBarIndex, NewDataPos);
}
else
{
// Update what bar we are hovering over
FVector2D CursorPos = MyGeometry.AbsoluteToLocal(MouseEvent.GetScreenSpacePosition());
FTrackScaleInfo ScaleInfo(ViewInputMin.Get(), ViewInputMax.Get(), 0.f, 0.f, MyGeometry.Size);
DraggableBarIndex = INDEX_NONE;
if ( DraggableBars.IsBound() )
{
const TArray<float>& DraggableBarsVal = DraggableBars.Get();
for ( int32 I=0; I < DraggableBarsVal.Num(); I++ )
{
if( FMath::Abs( ScaleInfo.InputToLocalX(DraggableBarsVal[I]) - CursorPos.X ) < 10 )
{
DraggableBarIndex = I;
break;
}
}
}
}
if ( this->HasMouseCapture() )
{
if (MouseEvent.IsMouseButtonDown( EKeys::RightMouseButton ) && bPanning)
{
FTrackScaleInfo ScaleInfo(ViewInputMin.Get(), ViewInputMax.Get(), 0.f, 0.f, MyGeometry.Size);
FVector2D ScreenDelta = MouseEvent.GetCursorDelta();
float InputDeltaX = ScreenDelta.X/ScaleInfo.PixelsPerInput;
bMouseMovedDuringPanning |= !ScreenDelta.IsNearlyZero(0.001f);
float NewViewInputMin = ViewInputMin.Get() - InputDeltaX;
float NewViewInputMax = ViewInputMax.Get() - InputDeltaX;
// we'd like to keep the range if outside when panning
if ( NewViewInputMin < 0.f )
{
NewViewInputMin = 0.f;
NewViewInputMax = ScaleInfo.ViewInputRange;
}
else if ( NewViewInputMax > SequenceLength.Get() )
{
NewViewInputMax = SequenceLength.Get();
NewViewInputMin = NewViewInputMax - ScaleInfo.ViewInputRange;
}
OnSetInputViewRange.ExecuteIfBound(NewViewInputMin, NewViewInputMax);
}
else if (!bDragging)
{
DistanceDragged += FMath::Abs(MouseEvent.GetCursorDelta().X);
if ( DistanceDragged > FSlateApplication::Get().GetDragTriggerDistance() )
{
bDragging = true;
}
if( bDragging )
{
OnBeginSliderMovement.ExecuteIfBound();
}
}
else if (bDragging)
{
FTrackScaleInfo TimeScaleInfo(ViewInputMin.Get(), ViewInputMax.Get(), 0.f, 0.f, MyGeometry.Size);
FVector2D CursorPos = MyGeometry.AbsoluteToLocal(MouseEvent.GetLastScreenSpacePosition());
float NewValue = TimeScaleInfo.LocalXToInput(CursorPos.X);
CommitValue( NewValue, true, false );
}
return FReply::Handled();
}
return FReply::Unhandled();
}
FReply SSlider::OnKeyDown(const FGeometry& MyGeometry, const FKeyEvent& InKeyEvent)
{
FReply Reply = FReply::Unhandled();
const FKey KeyPressed = InKeyEvent.GetKey();
if (IsInteractable())
{
// The controller's bottom face button must be pressed once to begin manipulating the slider's value.
// Navigation away from the widget is prevented until the button has been pressed again or focus is lost.
// The value can be manipulated by using the game pad's directional arrows ( relative to slider orientation ).
if (KeyPressed == EKeys::Enter || KeyPressed == EKeys::SpaceBar || KeyPressed == EKeys::Gamepad_FaceButton_Bottom)
{
if (bControllerInputCaptured == false)
{
// Begin capturing controller input and allow user to modify the slider's value.
bControllerInputCaptured = true;
OnControllerCaptureBegin.ExecuteIfBound();
Reply = FReply::Handled();
}
else
{
ResetControllerState();
Reply = FReply::Handled();
}
}
if (bControllerInputCaptured)
{
float NewValue = ValueAttribute.Get();
if (Orientation == EOrientation::Orient_Horizontal)
{
if (KeyPressed == EKeys::Left || KeyPressed == EKeys::Gamepad_DPad_Left || KeyPressed == EKeys::Gamepad_LeftStick_Left)
{
NewValue -= StepSize.Get();
}
else if (KeyPressed == EKeys::Right || KeyPressed == EKeys::Gamepad_DPad_Right || KeyPressed == EKeys::Gamepad_LeftStick_Right)
{
NewValue += StepSize.Get();
}
}
else
{
if (KeyPressed == EKeys::Down || KeyPressed == EKeys::Gamepad_DPad_Down || KeyPressed == EKeys::Gamepad_LeftStick_Down)
{
NewValue -= StepSize.Get();
}
else if (KeyPressed == EKeys::Up || KeyPressed == EKeys::Gamepad_DPad_Up || KeyPressed == EKeys::Gamepad_LeftStick_Up)
{
NewValue += StepSize.Get();
}
}
CommitValue(FMath::Clamp(NewValue, 0.0f, 1.0f));
Reply = FReply::Handled();
}
else
{
Reply = SLeafWidget::OnKeyDown(MyGeometry, InKeyEvent);
}
}
else
{
Reply = SLeafWidget::OnKeyDown(MyGeometry, InKeyEvent);
}
return Reply;
}
