FReply SWidget::OnKeyDown( const FGeometry& MyGeometry, const FKeyEvent& InKeyEvent )
{
if (SupportsKeyboardFocus())
{
EUINavigation Direction = FSlateApplicationBase::Get().GetNavigationDirectionFromKey( InKeyEvent );
// It's the left stick return a navigation request of the correct direction
if ( Direction != EUINavigation::Invalid )
{
return FReply::Handled().SetNavigation( Direction );
}
else if ( InKeyEvent.GetKey() == EKeys::Tab )
{
//@TODO: Really these uses of input should be at a lower priority, only occurring if nothing else handled them
// For now this code prevents consuming them when some modifiers are held down, allowing some limited binding
const bool bAllowEatingKeyEvents = !InKeyEvent.IsControlDown() && !InKeyEvent.IsAltDown() && !InKeyEvent.IsCommandDown();
if (bAllowEatingKeyEvents)
{
EUINavigation MoveDirection = (InKeyEvent.IsShiftDown())
? EUINavigation::Previous
: EUINavigation::Next;
return FReply::Handled().SetNavigation(MoveDirection);
}
}
}
return FReply::Unhandled();
}
FValorActionInputBinding UInputBlueprintLibrary::K2_GetInputAction(const FKeyEvent& KeyEvent)
{
FValorActionInputBinding Binding;
Binding.Key = KeyEvent.GetKey();
Binding.KeyAsString = Binding.Key.GetDisplayName().ToString();
Binding.bAlt = KeyEvent.IsAltDown();
Binding.bCtrl = KeyEvent.IsControlDown();
Binding.bShift = KeyEvent.IsShiftDown();
Binding.bCmd = KeyEvent.IsCommandDown();
return Binding;
}
FReply FTextEditHelper::OnKeyDown( const FKeyEvent& InKeyEvent, const TSharedRef< ITextEditorWidget >& TextEditor )
{
const FKey Key = InKeyEvent.GetKey();
if( Key == EKeys::Left )
{
return TextEditor->MoveCursor( FMoveCursor::Cardinal(
// Ctrl moves a whole word instead of one character.
InKeyEvent.IsControlDown( ) ? ECursorMoveGranularity::Word : ECursorMoveGranularity::Character,
// Move left
FIntPoint( -1, 0 ),
// Shift selects text.
InKeyEvent.IsShiftDown() ? ECursorAction::SelectText : ECursorAction::MoveCursor
));
}
else if( Key == EKeys::Right )
{
return TextEditor->MoveCursor( FMoveCursor::Cardinal(
// Ctrl moves a whole word instead of one character.
InKeyEvent.IsControlDown( ) ? ECursorMoveGranularity::Word : ECursorMoveGranularity::Character,
// Move right
FIntPoint( +1, 0 ),
// Shift selects text.
InKeyEvent.IsShiftDown() ? ECursorAction::SelectText : ECursorAction::MoveCursor
));
}
else if ( Key == EKeys::Up )
{
return TextEditor->MoveCursor( FMoveCursor::Cardinal(
InKeyEvent.IsControlDown( ) ? ECursorMoveGranularity::Word : ECursorMoveGranularity::Character,
// Move up
FIntPoint( 0, -1 ),
// Shift selects text.
InKeyEvent.IsShiftDown() ? ECursorAction::SelectText : ECursorAction::MoveCursor
));
}
else if ( Key == EKeys::Down )
{
return TextEditor->MoveCursor( FMoveCursor::Cardinal(
InKeyEvent.IsControlDown( ) ? ECursorMoveGranularity::Word : ECursorMoveGranularity::Character,
// Move down
FIntPoint( 0, +1 ),
// Shift selects text.
InKeyEvent.IsShiftDown() ? ECursorAction::SelectText : ECursorAction::MoveCursor
));
}
else if( Key == EKeys::Home )
{
// Go to the beginning of the document; select text if Shift is down.
TextEditor->JumpTo(
(InKeyEvent.IsControlDown() ) ? ETextLocation::BeginningOfDocument : ETextLocation::BeginningOfLine,
(InKeyEvent.IsShiftDown()) ? ECursorAction::SelectText : ECursorAction::MoveCursor );
return FReply::Handled();
}
else if ( Key == EKeys::End )
{
// Go to the end of the document; select text if Shift is down.
TextEditor->JumpTo(
(InKeyEvent.IsControlDown() ) ? ETextLocation::EndOfDocument : ETextLocation::EndOfLine,
(InKeyEvent.IsShiftDown()) ? ECursorAction::SelectText : ECursorAction::MoveCursor );
return FReply::Handled();
}
else if( Key == EKeys::Enter && !TextEditor->GetIsReadOnly() )
{
FScopedTextTransaction TextTransaction(TextEditor);
TextEditor->OnEnter();
return FReply::Handled();
}
else if( Key == EKeys::Delete && !TextEditor->GetIsReadOnly() )
{
// @Todo: Slate keybindings support more than one set of keys.
// Delete to next word boundary (Ctrl+Delete)
if (InKeyEvent.IsControlDown() && !InKeyEvent.IsAltDown() && !InKeyEvent.IsShiftDown())
{
TextEditor->MoveCursor( FMoveCursor::Cardinal(
ECursorMoveGranularity::Word,
// Move right
FIntPoint(+1, 0),
// selects text.
ECursorAction::SelectText
));
}
FScopedTextTransaction TextTransaction(TextEditor);
// Delete selected text
TextEditor->DeleteChar();
return FReply::Handled();
}
else if( Key == EKeys::Escape )
{
return TextEditor->OnEscape();
}
// @Todo: Slate keybindings support more than one set of keys.
//Alternate key for cut (Shift+Delete)
else if( Key == EKeys::Delete && InKeyEvent.IsShiftDown() && TextEditor->CanExecuteCut() )
{
// Cut text to clipboard
TextEditor->CutSelectedTextToClipboard();
return FReply::Handled();
}
// @Todo: Slate keybindings support more than one set of keys.
// Alternate key for copy (Ctrl+Insert)
else if( Key == EKeys::Insert && InKeyEvent.IsControlDown() && TextEditor->CanExecuteCopy() )
{
// Copy text to clipboard
TextEditor->CopySelectedTextToClipboard();
return FReply::Handled();
}
// @Todo: Slate keybindings support more than one set of keys.
// Alternate key for paste (Shift+Insert)
else if( Key == EKeys::Insert && InKeyEvent.IsShiftDown() && TextEditor->CanExecutePaste() )
{
// Paste text from clipboard
TextEditor->PasteTextFromClipboard();
return FReply::Handled();
}
// @Todo: Slate keybindings support more than one set of keys.
//Alternate key for undo (Alt+Backspace)
else if( Key == EKeys::BackSpace && InKeyEvent.IsAltDown() && !InKeyEvent.IsShiftDown() && TextEditor->CanExecuteUndo() )
{
// Undo
TextEditor->Undo();
return FReply::Handled();
}
// @Todo: Slate keybindings support more than one set of keys.
// Delete to previous word boundary (Ctrl+Backspace)
else if( Key == EKeys::BackSpace && InKeyEvent.IsControlDown() && !InKeyEvent.IsAltDown() && !InKeyEvent.IsShiftDown() && !TextEditor->GetIsReadOnly() )
{
FScopedTextTransaction TextTransaction(TextEditor);
TextEditor->MoveCursor( FMoveCursor::Cardinal(
ECursorMoveGranularity::Word,
// Move left
FIntPoint(-1, 0),
ECursorAction::SelectText
));
TextEditor->BackspaceChar();
return FReply::Handled();
}
// Ctrl+Y (or Ctrl+Shift+Z, or Alt+Shift+Backspace) to redo
else if( !TextEditor->GetIsReadOnly() && ( ( Key == EKeys::Y && InKeyEvent.IsControlDown() ) ||
( Key == EKeys::Z && InKeyEvent.IsControlDown() && InKeyEvent.IsShiftDown() ) ||
( Key == EKeys::BackSpace && InKeyEvent.IsAltDown() && InKeyEvent.IsShiftDown() ) ) )
{
// Redo
TextEditor->Redo();
return FReply::Handled();
}
else if( !InKeyEvent.IsAltDown() && !InKeyEvent.IsControlDown() && InKeyEvent.GetKey() != EKeys::Tab && InKeyEvent.GetCharacter() != 0 )
{
// Shift and a character was pressed or a single character was pressed. We will type something in an upcoming OnKeyChar event.
// Absorb this event so it is not bubbled and handled by other widgets that could have something bound to the key press.
//Note: Tab can generate a character code but not result in a typed character in this box so we ignore it.
return FReply::Handled();
}
else
{
return FReply::Unhandled();
}
}
