JavaFX fit an image in a toggleButton - javafx

Question

I have the following code
Image img = new Image(getClass().getResource("1.png").toExternalForm(), tg.getWidth(), tg.getHeight(), false, true, true);
ImageView view = new ImageView(img);
tg.setGraphic(view);
(where tg is a toggle button)
and I get this
I want the image to fit perfectly into the button but whatever I do I'm unable to accomplish this. I've already tried using view.setFit methods but it doesn't seem to have any effect
Edit:
This is the code that creates the GridPane
this.gameBoard = new GridPane();
this.gameBoard.setPrefSize(600, 600);
this.gameCards = new ToggleButton[this.boardSize * this.boardSize];
EventHandler<ActionEvent> cardSelectedHandler = this::onCardSelected;
for (int i = 0; i < this.gameCards.length; i++) {
this.gameCards[i] = new ToggleButton;
this.gameCards[i].setPrefSize(Region.USE_COMPUTED_SIZE, Region.USE_COMPUTED_SIZE);
this.gameCards[i].setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
this.gameCards[i].setOnAction(cardSelectedHandler);
this.gameBoard.add(this.gameCards[i], i % this.boardSize, i / this.boardSize);
GridPane.setHgrow(this.gameCards[i], Priority.ALWAYS);
GridPane.setVgrow(this.gameCards[i], Priority.ALWAYS);
}
private void onCardSelected(ActionEvent event) {
ToggleButton tg = (ToggleButton) event.getTarget();
Image img = new Image(getClass().getResource("1.png").toExternalForm(), tg.getWidth(), tg.getHeight(), false, true, true);
ImageView view = new ImageView(img);
tg.setGraphic(view);
EDIT 2:
doing some change
private void onCardSelected(ActionEvent event) {
ToggleButton tg = (ToggleButton) event.getTarget();
Image img = new Image(getClass().getResource("1.png").toExternalForm());
ImageView view = new ImageView(img);
view.setFitHeight(150);
view.setFitWidth(150);
view.setPreserveRatio(false);
tg.setAlignment(Pos.TOP_LEFT);
tg.setGraphic(view);
I now get
but I still get this button resize