Mouse handling on the SplitPane and ScrollBar controls breaks after displaying an application-modal Stage. The problem goes away after the application window loses and regains focus. Does anyone know a solution or workaround to this problem?
In what way is the mouse handling broken? When you click and start dragging on the control (SplitPane or ScrollBar), the control stops responding to your mouse movements the moment your mouse cursor leaves the control by a single pixel. This requires the user to be impossibly precise with the mouse. You would expect the control to respond to mouse movements, no matter where your mouse cursor happens to be, up until you release the mouse button.
The following code exhibits the problem on Ubuntu Linux and JRE 1.7.0_21. I have seen the problem on other JREs, but I have not tried another OS.
import javafx.application.Application;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.SplitPane;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.stage.Modality;
public class SplitPaneBug extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) {
Button button = new Button(
"Move the SplitPane divider, then click here to show the modal"
+ " dialog.");
button.setOnAction(
new EventHandler() {
public void handle(Event event) {
Stage dialog = new ModalDialog();
dialog.showAndWait();
}
});
button.setMaxWidth(Double.MAX_VALUE);
SplitPane splitPane = new SplitPane();
splitPane.getItems().setAll(new BorderPane(), new BorderPane());
VBox vbox = new VBox();
vbox.getChildren().setAll(button, splitPane);
vbox.setVgrow(splitPane, Priority.ALWAYS);
primaryStage.setTitle("SplitPane Bug?");
primaryStage.setScene(new Scene(vbox, 640, 480));
primaryStage.show();
}
class ModalDialog extends Stage {
public ModalDialog() {
Button button = new Button(
"Click here to dismiss this dialog, then move the SplitPane"
+ " divider again.");
button.setOnAction(
new EventHandler() {
public void handle(Event event) {
close();
}
});
BorderPane borderPane = new BorderPane();
borderPane.setCenter(button);
initModality(Modality.APPLICATION_MODAL);
setTitle("Modal Dialog");
setScene(new Scene(borderPane, 600, 100));
sizeToScene();
}
}
}
Are you sure that you use 7u21? Please, set to output VersionInfo.getRuntimeVersion().
I don't reproduce on my ubuntu 12.10 with jdk 7u21(b11) downloaded from official site,
but there is known bug in fx 8.0 - https://javafx-jira.kenai.com/browse/RT-29576
Related
I have a question. I need to make a GridPane with a directory choose that will then lead me to a modal dialog showing photos. I cannot figure how to do the modal dialog that also has to be a GridPane or a HBox...so the question is , how do I get to show a Modal Dialog after selecting the Folder and pressing the "Show" Button... Thanks a lot!
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.stage.DirectoryChooser;
import javafx.stage.Stage;
public class FotoView extends Application {
#Override
public void start(Stage primaryStage) {
TextField tf = new TextField();
Button b1 = new Button("Search");
Button b2 = new Button("Show");
DirectoryChooser dc = new DirectoryChooser();
GridPane gp = new GridPane();
gp.add(tf, 0 , 0);
gp.add(b1, 1, 0);
gp.add(b2, 0, 1);
b1.setOnAction(e-> dc.showDialog(primaryStage));
primaryStage.setScene(new Scene(gp)) ;
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
} ```
Below is a quick example where a first window has a button that opens up a DirectoryChooser. Once a directory has been selected a second smaller window opens up with the Modality set to APPLICATION_MODAL. In this second window you could add the image(s) that you load and add them to the GridPane.
import java.io.File;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.stage.DirectoryChooser;
import javafx.stage.Modality;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(final String[] args) {
launch(args);
}
#Override
public void start(final Stage aStage) throws Exception {
final HBox root = new HBox();
final Button browseBtn = new Button("Click to open a Directory chooser");
root.getChildren().add(browseBtn);
browseBtn.setOnAction(e -> {
final DirectoryChooser chooser = new DirectoryChooser();
final File dir = chooser.showDialog(aStage);
openNewModalStage(aStage, dir);
});
final Scene scene = new Scene(root, 500, 500);
aStage.setScene(scene);
aStage.show();
}
private void openNewModalStage(final Stage aStage, final File aDirectory) {
final Stage stage = new Stage();
final GridPane grid = new GridPane();
final Scene scene = new Scene(grid);
grid.setStyle("-fx-background-color:black");
grid.setPrefWidth(400);
grid.setPrefHeight(400);
// get your images from 'aDirectory' and add them to your grid pane.
stage.setScene(scene);
// set the new windows Modality.
stage.initModality(Modality.APPLICATION_MODAL);
stage.show();
}
}
This way you would only need the one button and the dialog would show as soon as you've selected a directory. However, if you would still want a Search and Show button then just store the directory as a variable and add a listener on the 'show' button and move the openNewModalStage call to that one and remove the second argument.
Edit:
Also, depending on how many images and exactly what you want to display in the modal window, you might want to reconsider the GridPane and use a TilePane, or an hbox/vbox inside of a scroll pane. It's just a thought but I don't know what you will be doing with the GridPane.
I need remove my javafx app from the taskbar. I tried StageStyle.UTILITY. This is works but I need both UNDECORATED and UTILITY stage styles or another solvings.
Thank you for your replies.
Sorry you've been waiting so long for some sort of an answer on this, the following is mainly for people who come to this in the future hoping to discover a way of achieving this.
Let me start of by saying I wouldn't consider the following a solution but more of a workaround.
Assigning more than one initStyle to a stage is not possible however hiding the application from the task-bar and assigning an initStyle other than utility to the stage that is shown is.
To achieve this one must create two stages, the stage they want the user to see, and an another stage that will be considered the parent of the main stage and will be of initStyle.UTILITY this will prevent the icon from showing in the task-bar.
Below you can see the hello world example from oracles documentation modified to allow for an undecorated window with no icon (Note if one wanted to achieve a transparent/decorated window they could do so by changing the style of mainStage).
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class MultipleStageStyles extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) {
primaryStage.initStyle(StageStyle.UTILITY);
primaryStage.setOpacity(0);
primaryStage.setHeight(0);
primaryStage.setWidth(0);
primaryStage.show();
Stage mainStage = new Stage();
mainStage.initOwner(primaryStage);
mainStage.initStyle(StageStyle.UNDECORATED);
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
System.out.println("Hello World!");
}
});
StackPane root = new StackPane();
root.getChildren().add(btn);
mainStage.setScene(new Scene(root, 300, 250));
mainStage.show();
}
}
I'm trying to set the minimum height of a window to the height of the scene it contains + the title bar height (so after showing the window, there's no possibility to shrink it more). Following this answer I wrote:
stage.setOnShown(event -> {
stage.setMinHeight(stage.getHeight());
});
It doesn't seem to work though because when the event is fired the window is not even shown on screen and its height is still equal to the height of the scene (title bar is not taken into consideration). My question is then - how to run the code when window is actually visible on the screen?
You can force the root of the scene to be laid out, and then size the stage to the scene's size:
stage.setOnShown(e -> {
stage.getScene().getRoot().layout();
stage.sizeToScene();
stage.setMinHeight(stage.getHeight());
});
Here's a SSCCE:
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class StageSizeTest extends Application {
#Override
public void start(Stage primaryStage) {
primaryStage.setOnShown(e -> {
primaryStage.getScene().getRoot().layout();
primaryStage.sizeToScene();
System.out.printf("[%.1f, %.1f]%n", primaryStage.getWidth(), primaryStage.getHeight());
primaryStage.setMinWidth(primaryStage.getWidth());
primaryStage.setMinHeight(primaryStage.getHeight());
});
VBox root = new VBox(10,
new Label("Test one"),
new Label("Another test"),
new Label("Another really long label to give the scene some width"),
new Label("Bottom label"));
root.setPadding(new Insets(10));
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
I have a window which has a combobox at the bottom. When I click on it, not all the options are visible because they are not inside the screen area anymore. How can I make the drop-down list display upwards instead of downards?
I have the ComboBox defined in SceneBuilder. I define it in my code this way:
#FXML
ComboBox fontsComboBox;
In my initialize() method of the controller assigned to that window I have set some properties:
fontComboBox.setVisibleRowCount(3);
fontComboBox.getItems().addAll(fontList);
fontComboBox.setValue(fontList[0]);
I'm pretty sure I need to add something here in order to make the dropdown list fo up.
Thanks,
Serban
This was a known bug till Java 8u45. It is fixed in Java 8u60.
https://bugs.openjdk.java.net/browse/JDK-8092942 (fixed in 8u60)
You can download JDK/JRE 8u60ea (early access) here to give it a try: https://jdk8.java.net/download.html
Java 8 Update 60 is scheduled GA for August 2015.
This example shows the problem. Simply open the combobox, even if you move the window down to screen, it won't show the list above the box.
import java.util.ArrayList;
import java.util.List;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class ComboBoxTester extends Application {
#Override
public void start(Stage primaryStage) {
List<Integer> values = new ArrayList<>();
for (int i = 1; i < 100; i++) {
values.add(i);
}
ObservableList<Integer> items = FXCollections.observableArrayList(values);
ComboBox<Integer> comboBox = new ComboBox<>(items);
comboBox.getSelectionModel().clearAndSelect(0);
comboBox.setVisibleRowCount(5);
BorderPane root = new BorderPane();
root.setBottom(comboBox);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Java 8 Update 45 behaviour
Java 8 Update 60 ea behaviour
I have a JavaFX ContextMenu assigned to the right mouse button click of a scrollpane. It opens, but it doesn't close when you click outside the scrollpane. I could add another mouse event to the scrollpane in order to hide it, but that solves only 1 problem. The main problem is that when I click on any component of the scrollpane, then the context menu remains open.
Example: Open popup via right mouse button click, then click on the button. The popup menu is still open.
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.ScrollPane;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) {
final ContextMenu contextMenu = new ContextMenu();
MenuItem item1 = new MenuItem("About");
MenuItem item2 = new MenuItem("Preferences");
contextMenu.getItems().addAll(item1, item2);
Rectangle rect = new Rectangle( 100,100,150,150);
Button button = new Button( "Button Text");
// create nodes
Group root = new Group();
root.getChildren().add( rect);
root.getChildren().add( button);
// create scrollpane
ScrollPane sp = new ScrollPane( root);
sp.setOnMousePressed(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
if (event.isSecondaryButtonDown()) {
contextMenu.show( sp, event.getScreenX(), event.getScreenY());
}
}
});
// create scene
Scene scene = new Scene(sp, 400, 400, Color.WHITE);
// add scene to primary stage
primaryStage.setScene( scene);
primaryStage.show();
}
}
The documentation says that there's a setAutoHide method, but it doesn't work in my case:
Specifies whether Popups should auto hide. If a popup loses focus and
autoHide is true, then the popup will be hidden automatically. The
only exception is when owner Node is specified using
show(javafx.scene.Node, double, double). Focusing owner Node will not
hide the PopupWindow.
#defaultValue false
Thank you very much!
Interacting with child elements of the parent, will get a focus to that parent. So the context menu will not hide when the button in your code is clicked.
Try these two approaches:
1) Manually manage the visibility of context menu, i.e. hide it on button click:
button.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent arg0) {
contextMenu.hide();
}
});
2) Use setContextMenu() instead of showing the context menu on mouse press event:
sp.setContextMenu(contextMenu);
I know that this is old post, but for any newcomer I found a new solution. I have an jdk 1.8 and I have the same problem as you, but I have a dynamic generated context menu in TableView. So when you right click on the row I need another context menu by the row content. The key for my solution is that you execute show method in the context menu you pass on the window parameter to the method. Example of my code is below:
ContextMenu contextMenu = this.createContextMenu();
contextMenu.show(this.tableView.getScene().getWindow(), mouseEvent.getScreenX(), mouseEvent.getScreenY());
And when I click to another location of my program, the context menu hide.