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JAVAFX How to make a button stacked behind a Label clickable

How to make a button stacked behind a Label clickable?
Button
Button btn = new Button();
//TODO: button's main function, like onPressed, onReleased etc. here...
Custom label
CustomLabel sp = new CustomLabel("Some texts here"));
//TODO: custom label's main function, like a translucent background etc here...
//main purpose of this is to overlay the button
Main Pane
StackPane mainPane = new StackPane();
mainPane.getChildren.addAll(btn, sp);
With this, the area which the custom label overlays becomes unclickable.
Is there anyway to make the button still clickable even though overlay-ed, for example?
Or is there another way to do it? Something like setting label to not visible on click?
EDIT : To answer Itamar Green 's question..
By using the example as shown in this link: Mouse Events get Ignored on the Underlying Layer , it still does not seems to work. The button stacked under the layer is still not clickable.
sp.setPickOnBounds(false);

You can set the mouseTransparent property of the element(s) drawn on top to true. Note that this way all descendants of the node are ignored for mouse events:
#Override
public void start(Stage primaryStage) {
Button btn = new Button("Say 'Hello World'");
btn.setOnAction((ActionEvent event) -> {
System.out.println("Hello World!");
});
Region region = new Region();
region.setStyle("-fx-background-color: #0000ff88;");
region.setMouseTransparent(true);
StackPane root = new StackPane(btn, region);
Scene scene = new Scene(root, 100, 100);
primaryStage.setScene(scene);
primaryStage.show();
}
Comment out
region.setMouseTransparent(true);
and the button will no longer react to mouse events in any way...

thanks for your help. I think I have solved my own question.
All I did was set a clickable event for my label.
Label sp = new Label("some texts here")
sp.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent e) {
//copy over the button's event.
}
});
Not sure if there is any better way of doing this...

in addition with the correct answer. you can enable or disable " mouse transparent " property via fxml with scenebuilder

How can i lock a screen in a certain position (javafx)?

i have to make a game for a school project and i was wondering if it's possible to lock a screen in a certain position on the screen. I have a settings button that opens a new stage and i want to make that scene immovable is this possible?
This is the code where i display the settings screen:
Public void buttonAction(){
btnSettings.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
GridPane settingsGrid = new GridPane();
Scene scene1 = new Scene(settingsGrid,375,600);
Stage settingsStage = new Stage();
settingsGrid.setHgap(10);
settingsGrid.setVgap(10);
//settingsGrid.setGridLinesVisible(true);
settingsStage.setTitle("Settings");
settingsStage.setResizable(false);
settingsStage.initStyle(StageStyle.UTILITY);
settingsStage.initModality(Modality.APPLICATION_MODAL);
settingsStage.setScene(scene1);
settingsStage.showAndWait();
}
});
}
Thanks in advance!

you could try this:
settingsStage.initStyle(StageStyle.TRANSPARENT);
However, you could only have one initStyle if I remember correctly. So you have to settingsStage.initStyle(StageStyle.UTILITY); in order to use the above code. What it does is it make the background transparent and the user could not change the position.

JavaFX virtual keyboard overlaps nodes

i have a question about using virtual keyboard on touch supported pc with Windows 8.1. I have managed to show the virtual keyboard when textfield is focused with java switch:
-Dcom.sun.javafx.isEmbedded=true -Dcom.sun.javafx.virtualKeyboard=javafx
I found how to that on JavaFX Virtual Keyboard doesn't show1.
But when the keyboard show's up, it overlapps nodes below the keyboard.
According to what I read, http://docs.oracle.com/javase/8/javafx/user-interface-tutorial/embed.htm, it should't be working like that.
Does anyone have any experience with that kind of problem?
When i run the test application it shows in full screen and embedded virtual keyboard is showing, becasue the textfield has focus. The textfield in this case is not visible until i "hide" the keyboard. I am not sure that this is the right approach so i need help please.
java -Dcom.sun.javafx.isEmbedded=true -Dcom.sun.javafx.virtualKeyboard=javafx application.TestVKB
public class TestVKB extends Application{
public static void main(String[] args) {
Application.launch(args);
}
#Override
public void start(Stage stage) throws Exception {
TextField tfComment = new TextField();
tfComment.setPromptText("Enter comment");
BorderPane borderPane = new BorderPane();
borderPane.setBottom(tfComment);
Scene scene = new Scene(borderPane);
stage.setScene(scene);
stage.setMaximized(true);
stage.show();
}
}
After click in field username or password
I would be grateful for any advice. Thanks in advance.

As I've already pointed out in my first answer, the virtual keyboard is embedded in a PopupWindow, created in a different stage, and displayed on top of your current stage.
The option -Dcom.sun.javafx.vk.adjustwindow=true works, moving the main stage so the control is visible and there is no overlapping.
But when this input control is located at the bottom of the main stage, this is moved up to the center of the screen leaving a big empty gap that shows whatever is behind.
This second answer gives a solution to move the main stage just the required distance, without any gap, also taking into account the fade in/out animations of the virtual keyboard.
For starters, in our scene, we add a Button on the center, and the TextField on the bottom. With two controls we can change the focus easily and show/hide the keyboard.
To maximize the stage I'll use getVisualBounds(), so the taskbar can be visible.
private PopupWindow keyboard;
private final Rectangle2D visualBounds = Screen.getPrimary().getVisualBounds();
private final Rectangle2D bounds = Screen.getPrimary().getBounds();
private final double taskbarHeight=bounds.getHeight()-visualBounds.getHeight();
#Override
public void start(Stage stage) {
TextField tfComment = new TextField();
tfComment.setPromptText("Enter comment");
BorderPane borderPane = new BorderPane(new Button("Click"));
borderPane.setBottom(tfComment);
Scene scene = new Scene(borderPane);
stage.setScene(scene);
stage.setX(visualBounds.getMinX());
stage.setY(visualBounds.getMinY());
stage.setWidth(visualBounds.getWidth());
stage.setHeight(visualBounds.getHeight());
stage.show();
}
We need to find the new stage when it's shown. In the same way as Scenic View, we'll use a deprecated method to get a valid window:
private PopupWindow getPopupWindow() {
#SuppressWarnings("deprecation")
final Iterator<Window> windows = Window.impl_getWindows();
while (windows.hasNext()) {
final Window window = windows.next();
if (window instanceof PopupWindow) {
if(window.getScene()!=null && window.getScene().getRoot()!=null){
Parent root = window.getScene().getRoot();
if(root.getChildrenUnmodifiable().size()>0){
Node popup = root.getChildrenUnmodifiable().get(0);
if(popup.lookup(".fxvk")!=null){
return (PopupWindow)window;
}
}
}
return null;
}
}
return null;
}
We'll call this method when the textfield gets the focus:
...
stage.show();
tfComment.focusedProperty().addListener((ob,b,b1)->{
if(keyboard==null){
keyboard=getPopupWindow();
}
});
}
Once we have the window, we can listen to changes in its position and move the main stage accordingly:
....
stage.show();
//findWindowExecutor.execute(new WindowTask());
tfComment.focusedProperty().addListener((ob,b,b1)->{
if(keyboard==null){
keyboard=getPopupWindow();
keyboard.yProperty().addListener(obs->{
System.out.println("wi "+keyboard.getY());
Platform.runLater(()->{
double y = bounds.getHeight()-taskbarHeight-keyboard.getY();
stage.setY(y>0?-y:0);
});
});
}
});
}
Note that instead of moving up the stage, another option will be resizing it (if there is enough space within the controls).
This will be the case where the textfield gets the focus and the virtual keyboard is fully shown:

Basically, the virtual keyboard is embedded in a PopupWindow, created in a different stage, and displayed on top of your current stage, at the bottom of the screen, no matter where the InputControl that triggers the keyboard is located.
You can see that on the FXVKSkin class:
winY.set(screenBounds.getHeight() - VK_HEIGHT);
But, just inmediately after that, you can find this:
if (vkAdjustWindow) {
adjustWindowPosition(attachedNode);
}
So, there's another command line option that you can use to move the stage so the node (the textfield in this case) will be on the center of the screen and you can type without overlapping it:
-Dcom.sun.javafx.vk.adjustwindow=true
Note that when the textfield loses the focus, the keyboard is hidden and the stage is moved again to its original position:
restoreWindowPosition(oldNode);
I've tested this option successfully, but when you have the textfield at the bottom of the screen, this will move your stage bottom to the center of the screen, leaving a big gap between both stages (you'll see whatever you have on the background).
I've managed to add a listener to the new stage and adjust the position just the necessary. If you are interested I could post it.
EDIT
Note this command line option won't work if the stage is maximized. A simple solution for this is:
Rectangle2D bounds = Screen.getPrimary().getBounds();
stage.setX(bounds.getMinX());
stage.setY(bounds.getMinY());
stage.setWidth(bounds.getWidth());
stage.setHeight(bounds.getHeight());
stage.show();

I liked the solution, but in my case I prefer to move the keyboard using the showed method getPopupWindow i created a listener on textfield and changed the position of the keyboard directly.
textField.focusedProperty().addListener((ob, b, b1) -> {
if (keyboard == null) {
keyboard = getPopupWindow();
keyboard.setHideOnEscape(Boolean.TRUE);
keyboard.setAutoHide(Boolean.TRUE);
keyboard.centerOnScreen();
keyboard.requestFocus();
keyboard.sizeToScene();
}
Platform.runLater(() -> {
keyboard.setY(**NEW_POSITION_OF_KEYBOARD**);
});
});

JavaFX : how to make a button with two (2) or more icons?

There is plenty of online resource on how to add a graphic to a JavaFX button.
However I would like to know if there is a way to add a second (or any number, but more than 2 images probably woudn't make much sense in most situations) image.
My use case : i have a button with a square icon on the left, followed by a text label. The image is a representation of some real-life concept that button is linked with (could e.g. a car or a person). I would like to add a small icon to the right of some buttons, a "right chevron" to indicate the nature of the interaction.
I was thinking maybe to use a HBox with the full width as the graphic node of the button, and add the 2 images to it, but I don't think it is possible to put the text on top of the graphic node.
Any idea ?

Create your own custom node with icons and text and set it as graphic. Of course you don't show the button text because it's already in your custom graphic node.
Here's a simple example. You need to provide the files icon1.png and icon2.png.
public class ButtonWithMultipleIcons extends Application {
#Override
public void start(Stage primaryStage) {
try {
Group group = new Group();
Button button = new Button();
button.setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
HBox hBox = new HBox();
ImageView icon1 = new ImageView( getClass().getResource( "icon1.png").toExternalForm());
ImageView icon2 = new ImageView( getClass().getResource( "icon2.png").toExternalForm());
Label label = new Label("Text");
//make the button grow if you want the right icon to always be on the right of the button :
label.setMaxWidth(Long.MAX_VALUE);
HBox.setHgrow(label, Priority.ALWAYS);
hBox.getChildren().addAll( icon1, label, icon2);
button.setGraphic(hBox);
group.getChildren().add( button);
Scene scene = new Scene(group,400,400);
primaryStage.setScene(scene);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}

You can try using html formatting in your button and adding an image with the tag before and after your text.
You can find more information about it in here:http://docs.oracle.com/javase/tutorial/uiswing/components/html.html

I had the same thing to get along with. You describing the solution with using a HBox. I think this would also be the best way.
Do the following:
Create a new CustomButton with your own specific layout maybe using a HBox and extending Button class from JavaFX. Style it your way you need it and you can add as many images you want to have in your custom button. Maybe it can look like this:
public class CustomButton extends Button
{
private HBox hbox;
private ImageView image1;
private ImageView image2;
public CustomButton()
{
super();
// Here add your specific images to global or local variables and then add all the children (images) to your HBox layout and this one to the button.
}
}
The problem ist, that JavaFX provides normal buttons and not such deeply customized components. If you want to style it, you can use CSS anyway.

Weird behavior of two mouse events being triggered infinitely in tooltip code

I am trying to implement a custom tooltip using the javafx.stage.Popup. The sample demo code is:
public class PopupDemo extends Application {
private Popup tooltip;
private final SepiaTone sepiaTone = new SepiaTone();
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) {
primaryStage.setTitle("PopupDemo");
Label content = new Label();
content.setStyle("-fx-background-color:#FCFBBD; -fx-padding: 5; -fx-border-color: #BFBD3B");
tooltip = new Popup();
tooltip.getContent().add(content);
VBox vbox = new VBox(10);
for (int i = 0; i < 5; i++) {
final Label lbl = new Label("item " + i);
lbl.setStyle("-fx-border-color:darkgray; -fx-background-color:lightgray");
lbl.setMaxSize(80, 60);
lbl.setMinSize(80, 60);
lbl.setAlignment(Pos.CENTER);
lbl.setOnMouseEntered(new EventHandler<MouseEvent>() {
#Override
public void handle(final MouseEvent e) {
lbl.setEffect(sepiaTone);
lbl.setStyle("-fx-cursor: hand");
Label content = (Label) tooltip.getContent().get(0);
content.setText(lbl.getText());
tooltip.show(lbl, e.getScreenX(), e.getScreenY());
}
});
lbl.setOnMouseExited(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent e) {
lbl.setEffect(null);
lbl.setStyle("-fx-cursor: default");
tooltip.hide();
}
});
vbox.getChildren().add(lbl);
}
StackPane root = new StackPane();
root.setPadding(new Insets(20));
root.getChildren().add(vbox);
primaryStage.setScene(new Scene(root, 600, 400));
primaryStage.show();
}
}
When I move the mouse over the labels the popup shows up and it is working great. But in some cases the two mouse event handlers OnMouseEntered and OnMouseExited are being called continuously one after another. One can reproduce this by running provided example, maximising a window and hovering labels continuously.
Is there a way to avoid this? I'm using JavaFX 2.0.1. Thanks.

It's a classic problem: you put mouse at a point, node receives MouseEntered — tooltip appears under the mouse and covers the node triggering MouseExited.
To avoid that you can change tooltip.show(lbl, e.getScreenX(), e.getScreenY()) call to
tooltip.show(lbl, e.getScreenX() + 1, e.getScreenY() + 1);

This is not really an answer, so much as pointers to things you might try or investigate further.
You could look at the implementation of Tooltip Skin and Behavior to see how it handles some of these cases.
The easiest way to implement a custom popup is just to use a Tooltip, style it the way you need using css and use the Tooltip's setGraphic method to add any custom Node content you want.
If you prefer to use your own implementation, I think you need to keep track of whether the popup has been displayed or not, so you don't try to show it if it is already showing, etc. You may also need invoke the hiding of the popup by having a mouse exit handler installed on the popup itself. You also might want a click to dismiss function for the popup by implementing a mouse click handler on the popup. You should also consider whether you should do a straight subclass of Popup or PopupControl, though using Popup as you have is likely more straightforward.