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**);
});
});
Related
I have a javaFX application which takes input from a barcode scanner. The barcode scanner is recognised as a keyboard and always follows its input with a newline after any barcode is scanned (so onAction event is triggered).
At the moment I have a textfield which is always focused and linked to the barcode scanner, however I would like this to be hidden from the user. I tried using setVisible(False) but this seems to disable the textfield (onAction isn't triggered and textfield always empty)
I also tried putting the textfield off the screen which did work however because the screen has to be resizable I now have to use gridPane as the root so its not possible to do this anymore.
Just wondering if there is anyway to make the textfield invisible to the user but still allow it to be enabled?
You have a few possibilities to hide the text field using css. The easiest is to set the opacity to 0
TextField.css
.hidden{
-fx-opacity: 0;
}
Java
GridPane root = new GridPane();
// Add stylesheet
root.getStylesheets().add("TextField.css");
TextField textField = new TextField();
// Add class
textField.getStyleClass().add("hidden");
On the other hand I would really ask myself if this "hack" is the way to go. If your barcode scanner is simply inserting text, maybe the better solution is to add an event handler and handle the keystrokes accordingly:
EventHandler
root.addEventHandler(KeyEvent.ANY,(event)->{
System.out.println(event);
});
You do not actually need to have a TextField in the scene. In fact I wouldn't recommend doing that, since this would interfere with the focus and possibly the layout.
Instead I'd add a listener to the scene (or the root node of the scene making sure it or a descendant can get focus by setting the focusTraversable property to true, if necessary). You may need to use a event filter, if a node that consumes the KEY_PRESSED may have focus:
#Override
public void start(Stage primaryStage) throws IOException {
StackPane root = new StackPane(new Button());
Scene scene = new Scene(root);
final StringBuilder string = new StringBuilder();
scene.addEventFilter(KeyEvent.KEY_PRESSED, evt -> {
KeyCode code = evt.getCode();
if (code.isDigitKey()) {
// input part of the information
String name = code.toString();
string.append(name.charAt(name.length() - 1)); // make sure numpad keys do not
} else if (code == KeyCode.ENTER) {
// submit input
submitCode(string.toString());
string.setLength(0);
}
});
primaryStage.setScene(scene);
primaryStage.show();
}
private void submitCode(String code) {
System.out.println(code);
}
Try using TextField.setText(java.lang.String).
There is a button in a scene of the main window. When it's clicked, the new window is created, according following code:
public static void create()
{
Stage stage = new Stage();
AnchorPane pane = new AnchorPane();
//Here i add some into pane
stage.setScene(new Scene(pane));
stage.setWidth(500);
stage.setHeight(600);
stage.show();
}
I'd like the main window will remain blocked (i.e. an user won't be able to click on buttons, type text, resize or interact with it with other ways) until the additional window is closed.
Here is a link that shows exactly what you're looking for: http://www.javafxtutorials.com/tutorials/creating-a-pop-up-window-in-javafx/
Here is the main part of the code you need to add:
stage.initModality(Modality.APPLICATION_MODAL);
stage.initOwner(btn1.getScene().getWindow());
stage.showAndWait(); // This forces the program to pay attention ONLY to this popup window until its closed
Hope this helps.
The title may be a bit vague, so allow me to define it a little better. I have a working piece of code (down below): a simple main menu for a game I am working on. Everything works well, except for the Start button.
What I want to be able to do is click the Start button, and have a new scene appear on the same stage (window). I do not want to see a new window open. I have talked with someone more experienced in Java, and they told me to create separate classes for the MenuFX and the GameFX. If that is the case, I would need to call some start or launch method on the GameFX class from the MenuFX class, correct? Is this the best approach, or would I want to keep all FX-related code in one class? Also, I should keep the same stage for all FX work, no?
This post shed some light on things, but I am not well-versed in some of the terms discussed- for instance, I still do not understand the concept of Root.
Also, this post talks about a similar application, but I am not using FXML or SceneBuilder... I do not know if any of it is relatable.
MenuFX.java - I have removed some of the working code, simply for brevity. You can see that all I need help with is tying the Start button to some functionality that makes a new empty scene.
/*
* This is simply working on the title screen.
*/
// Asssume all imports are correct
import java.everythingNeeded
public class MenuFX extends Application {
#Override
public void start (Stage primaryStage) {
// Make the window a set size...
primaryStage.setResizable(false);
// Create menu vbox and set the background image
VBox menuVBox = new VBox(30);
menuVBox.setBackground(new Background(new BackgroundImage(new
Image("image/bambooBG.jpg"), null, null, null, new BackgroundSize(45,
45, true, true, true, true))));
// Create start button
Button startButton = new Button("Start Game");
// TODO Some things...
// Need assistance here
// Create help button
Button helpButton = new Button("Help");
helpButton.setOnAction(e -> THINGS);
// Create music toggle button
ToggleButton musicButton = new ToggleButton("Music On/Off");
musicButton.setOnAction(e -> THINGS);
// Create credits button
Button creditsButton = new Button("Credits");
creditsButton.setOnAction(THINGS);
// Create exit button and set it to close the program when clicked
Button endButton = new Button("Exit Game");
endButton.setOnAction(e -> Platform.exit());
// Add all nodes to the vbox pane and center it all
// Must be in order from top to bottom
menuVBox.getChildren().addAll(startButton, helpButton, musicButton, creditsButton, endButton);
menuVBox.setAlignment(Pos.CENTER);
// New scene, place pane in it
Scene scene = new Scene(menuVBox, 630, 730);
// Place scene in stage
primaryStage.setTitle("-tiles-");
primaryStage.setScene(scene);
primaryStage.show();
}
// Needed to run JavaFX w/o the use of the command line
public static void main(String[] args) {
launch(args);
}
}
Restating: I want to click the Start button and have the currently open window change to an empty scene.
Here is a pastebin of the MenuFX class in its entirety:
http://pastebin.com/n6XbQfhc
Thank you for any help,
Bagger
The basic idea here is you would do something like:
public class GameFX {
private final BorderPane rootPane ; // or any other kind of pane, or Group...
public GameFX() {
rootPane = new BorderPane();
// build UI, register event handlers, etc etc
}
public Pane getRootPane() {
return rootPane ;
}
// other methods you may need to access, etc...
}
Now back in the MenuFX class you would do
Button startButton = new Button("Start Game");
startButton.setOnAction(e -> {
GameFX game = new GameFX();
primaryStage.getScene().setRoot(game.getRootPane());
});
Have an issue with JavaFX where whenI popup a new stage, that new window will take focus from any windows application with current focus
I want it to popup to the front, but not take focus, so if the user was typing elsewhere they can continue to type etc.
In Swing you could get around this by:
dialog.setFocusable(false);
dialog.setVisible(true);
dialog.setFocusable(true);
There seems to be no similar option in JavaFx.
Example below, when you click the button it will popup a new stage, taking focus (note I don't want to request focus back, as in the real application the user could be writing an email or on a web page when the popup happens, it needs to not take focus from these activities)
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;
public class Main extends Application {
private Stage stage;
#Override public void start(Stage stage) {
this.stage = stage;
stage.setTitle("Main Stage");
stage.setWidth(500);
stage.setHeight(500);
Button btnPopupStage = new Button("Click");
btnPopupStage.setOnMouseClicked(event -> popupStage());
Scene scene = new Scene(btnPopupStage);
stage.setScene(scene);
stage.show();
}
private void popupStage(){
Stage subStage = new Stage();
subStage.setTitle("Sub Stage");
subStage.setWidth(250);
subStage.setHeight(250);
subStage.initOwner(stage);
subStage.show();
System.out.println("Does main stage have focus : "+stage.isFocused());
System.out.println("Does popup have focus : "+subStage.isFocused());
}
public static void main(String[] args) {
launch(args);
}
}
Any ideas for a stage to not take focus on a stage.show() ? Thanks
Just incase anyone is is searching, I couldn't find a solution, but I found someone with the same issue who raised a ticket for the openjdk
https://bugs.openjdk.java.net/browse/JDK-8090742
To get around it unfortunately I put the JavaFX pane inside a Swing JFrame and just called
dialog.setFocusableWindowState(false);
dialog.setVisible(true);
dialog.setFocusableWindowState(true);
Which has fixed the focus stealing issue, but not sure on the effects of having JFx in a Swing JFrame.
If anyone finds a non focus stealing way of a new Window in JFx let me know.
Thanks
to prevent what you are describing by assuming is the cause of your problem then you need to add subStage.initModality(Modality.NONE); . But that is not the problem, actually there is no problem here look here
stage.setWidth(500); // your stage is 500 wide
stage.setHeight(500); // & 500 long
Scene scene = new Scene(btnPopupStage);// your scene has a parent which is button
//by inheritance if i should say your button is 500 wide & long.
Have you seen the problem? your button will always respond to click events which in event will create a new Stage hence give focus to that Stage
If I create a javafx dialog using the following method:
public static void showDialog(Event event) throws IOException {
dialogStage = new Stage();
GridPane grid = (GridPane) Start.createLoader().load(Start.class.getResource("file.fxml").openStream());
dialogStage.setScene(new Scene(grid));
dialogStage.setTitle("Title");
dialogStage.initModality(Modality.WINDOW_MODAL);
dialogStage.initOwner(((Node) event.getSource()).getScene().getWindow());
dialogStage.showAndWait();
}
the ower window moves in case it is maximized. This also happens if I use:
Modality.APPLICATION_MODAL
It works if I combine:
dialogStage.initModality(Modality.WINDOW_MODAL);
dialogStage.initOwner(primaryStage.getOwner());
but in this case the owner window is not blocked.
I want my dialog showing up on a maximized window without moving it. The maximized window should be blocked while the dialog is open. How can I do this?
Btw. I am using java 8 and javafx on linux.
Tanks!