Develop Reference

Implement side-scrolling like transitions between scenes [duplicate]

Is possible to switch scene with a slide effect?
i want that when i call the setScene on the stage instance
it change the scene with a slide effect. it's possible?
public class ManyScenes extends Application {
public static void main(String[] args) {
Application.launch(args);
}
#Override
public void start(final Stage primaryStage) {
primaryStage.setTitle("Slide");
Group root1 = new Group();
Group root2 = new Group();
Scene scene1 = new Scene(root1, 300, 250);
Scene scene2 = new Scene(root2, 300, 250);
Rectangle rectangle2 = new Rectangle(300, 250);
rectangle2.setFill(Color.BLUE);
root2.getChildren().add(rectangle2);
Rectangle rectangle1 = new Rectangle(300, 250);
rectangle1.setFill(Color.RED);
root1.getChildren().add(rectangle1);
primaryStage.setScene(scene1);
primaryStage.show();
// Here i need a slide effect,
// this method is called when a button is pressed.
primaryStage.setScene(scene2);
}
}

You can't apply a transition between two scenes, as it is not possible to have both at the same time on one stage. One solution would be having just one scene and manage all the transitions inside, as in #James_D answer.
But you could also simulate a transition between two scenes. For this you can use two snapshots of both, perform a transition between those and at the end just set the new scene.
This is a very basic working case, where you can go backwards and forward all over again just clicking in the new scene:
#Override
public void start(Stage primaryStage) {
Group root1 = new Group();
Group root2 = new Group();
Scene scene1 = new Scene(root1, 300, 250);
Scene scene2 = new Scene(root2, 300, 250);
Rectangle rectangle2 = new Rectangle(300, 250);
rectangle2.setFill(Color.BLUE);
root2.getChildren().add(rectangle2);
Rectangle rectangle1 = new Rectangle(300, 250);
rectangle1.setFill(Color.RED);
root1.getChildren().add(rectangle1);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene1);
primaryStage.show();
rectangle1.setOnMouseClicked(e->{
// Create snapshots with the last state of the scenes
WritableImage wi = new WritableImage(300, 250);
Image img1 = root1.snapshot(new SnapshotParameters(),wi);
ImageView imgView1= new ImageView(img1);
wi = new WritableImage(300, 250);
Image img2 = root2.snapshot(new SnapshotParameters(),wi);
ImageView imgView2= new ImageView(img2);
// Create new pane with both images
imgView1.setTranslateX(0);
imgView2.setTranslateX(300);
StackPane pane= new StackPane(imgView1,imgView2);
pane.setPrefSize(300,250);
// Replace root1 with new pane
root1.getChildren().setAll(pane);
// create transtition
Timeline timeline = new Timeline();
KeyValue kv = new KeyValue(imgView2.translateXProperty(), 0, Interpolator.EASE_BOTH);
KeyFrame kf = new KeyFrame(Duration.seconds(1), kv);
timeline.getKeyFrames().add(kf);
timeline.setOnFinished(t->{
// remove pane and restore scene 1
root1.getChildren().setAll(rectangle1);
// set scene 2
primaryStage.setScene(scene2);
});
timeline.play();
});
rectangle2.setOnMouseClicked(e->{
// Create snapshots with the last state of the scenes
WritableImage wi = new WritableImage(300, 250);
Image img1 = root1.snapshot(new SnapshotParameters(),wi);
ImageView imgView1= new ImageView(img1);
wi = new WritableImage(300, 250);
Image img2 = root2.snapshot(new SnapshotParameters(),wi);
ImageView imgView2= new ImageView(img2);
// Create new pane with both images
imgView2.setTranslateX(0);
imgView1.setTranslateX(300);
StackPane pane= new StackPane(imgView2,imgView1);
pane.setPrefSize(300,250);
// Replace root2 with new pane
root2.getChildren().setAll(pane);
// create transtition
Timeline timeline = new Timeline();
KeyValue kv = new KeyValue(imgView1.translateXProperty(), 0, Interpolator.EASE_BOTH);
KeyFrame kf = new KeyFrame(Duration.seconds(1), kv);
timeline.getKeyFrames().add(kf);
timeline.setOnFinished(t->{
// remove pane and restore scene 2
root2.getChildren().setAll(rectangle2);
// set scene 1
primaryStage.setScene(scene1);
});
timeline.play();
});
}
For more complex effects have a look at this.

A Stage can contain one and only one Scene, and each Scene has one and only one root. So you need to manage the transition inside the root of a single scene.
Simple example:
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;
public class SlidingViews extends Application {
#Override
public void start(Stage primaryStage) {
Rectangle rectangle1 = new Rectangle(300, 250);
rectangle1.setFill(Color.RED);
Button nextView = new Button("Next");
nextView.setPadding(new Insets(10));
BorderPane view1 = new BorderPane(rectangle1, null, null, nextView, null);
BorderPane.setAlignment(nextView, Pos.CENTER);
Group view2 = new Group();
Rectangle rectangle2 = new Rectangle(300, 250);
rectangle2.setFill(Color.BLUE);
view2.getChildren().add(rectangle2);
StackPane root = new StackPane(view1);
nextView.setOnAction(event -> {
root.getChildren().add(view2);
double width = root.getWidth();
KeyFrame start = new KeyFrame(Duration.ZERO,
new KeyValue(view2.translateXProperty(), width),
new KeyValue(view1.translateXProperty(), 0));
KeyFrame end = new KeyFrame(Duration.seconds(1),
new KeyValue(view2.translateXProperty(), 0),
new KeyValue(view1.translateXProperty(), -width));
Timeline slide = new Timeline(start, end);
slide.setOnFinished(e -> root.getChildren().remove(view1));
slide.play();
});
Scene scene = new Scene(root, 400, 400);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}

AFAIK it's not possible. Rather than sliding scenes, try creating different layouts inside one scene and slide between them.

I would recommend having a look at the Pagination control.
It switches its content panes with an animation. You can either customize this one to fit your needs or have a look at its skin implementation to get an idea on how to do the animation.

How do I create a JavaFX BorderPane with no center?

I would like to create a BorderPane layout in JavaFX with no center pane.
The code I have written so far only implements the left and right borders and is below:
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class GUI_Practice extends Application {
#Override
public void start(Stage stage) throws Exception {
String blackBorder = "-fx-border-style: solid; -fx-border-width: 1; -fx-border-color: black";
/* Left column */
Button save = new Button("Save");
Button del = new Button("Delete");
HBox settings = new HBox(save, del);
VBox leftCol = new VBox(settings);
leftCol.setStyle(blackBorder);
/* Right column */
Button calculate = new Button("Calculate");
Button cancel = new Button("Cancel");
HBox runButtons = new HBox(calculate, cancel);
VBox rightCol = new VBox(runButtons);
rightCol.setStyle(blackBorder);
/* Set up borderpane */
BorderPane root = new BorderPane();
root.setPadding(new Insets(15));
root.setLeft(leftCol);
root.setRight(rightCol);
Scene scene = new Scene(root, 800, 600);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch();
}
}
The output it gives is shown in the image below:
However, I want it to look more like this:
Where the left and right columns are equal width and take up the entire width of the window. Additionally, the columns do not change width with the window, so the whitespace in the middle gets bigger as the window gets bigger.
What do I need to change to make the columns fill the width of the window?
(P.S. I'm still learning, so if the solution could avoid FXML (which I don't understand yet), that'd be great)
EDIT: as per #k88's suggestion, my start method now looks like so:
public void start(Stage stage) throws Exception {
String blackBorder = "-fx-border-style: solid; -fx-border-width: 1; -fx-border-color: black";
Button calculate = new Button("Calculate");
Button cancel = new Button("Cancel");
HBox runButtons = new HBox(calculate, cancel);
VBox rightCol = new VBox(runButtons);
rightCol.setStyle(blackBorder);
Button save = new Button("Save");
Button del= new Button("Delete");
HBox settings = new HBox(save, load);
VBox leftCol = new VBox(settings);
leftCol.setStyle(blackBorder);
HBox root = new HBox(leftCol, rightCol);
root.setPadding(new Insets(15));
Scene scene = new Scene(root, 800, 600);
stage.setScene(scene);
stage.show();
}
Giving a window looking like:

There are different ways to get this problem fixed.
If you want to still gain the benefits from BorderPane (like to have top and bottom panes), you can set a HBox/GridPane as the center (without setting left/right).
If you are not bothered about top and bottom layout implementations, then as #k88 suggested, you can use directly HBox or GridPane as your root node.
Using HBox:
HBox.setHGrow(leftCol,Priority.ALWAYS);
HBox.setHGrow(rightCol,Priority.ALWAYS);
HBox root = new HBox();
root.setPadding(new Insets(15));
root.getChildren().addAll(leftCol, rightCol);
Using GridPane:
GridPane root = new GridPane();
ColumnConstraints col1 = new ColumnConstraints();
col1.setPercentWidth(50);
ColumnConstraints col2 = new ColumnConstraints();
col2.setPercentWidth(50);
root.getColumnConstraints().addAll(col1,col2);
root.addRow(0, leftCol,rightCol);
Update: In either cases, if you want your buttons to auto stretch, bind the width of the buttons to its layout. This way you can control the buttons width proportion in the HBox.
Button calculate = new Button("Calculate");
Button cancel = new Button("Cancel");
HBox runButtons = new HBox(calculate, cancel);
calculate.prefWidthProperty().bind(runButtons.widthProperty().divide(2));
cancel.prefWidthProperty().bind(runButtons.widthProperty().divide(2));
Update 2: Please find below a sample demo.
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.*;
import javafx.stage.Stage;
public class Sample extends Application {
public void start(Stage stage) throws Exception {
String blackBorder = "-fx-border-style: solid; -fx-border-width: 1; -fx-border-color: black";
Button calculate = new Button("Calculate");
Button cancel = new Button("Cancel");
HBox runButtons = new HBox(calculate, cancel);
calculate.prefWidthProperty().bind(runButtons.widthProperty().divide(2));
cancel.prefWidthProperty().bind(runButtons.widthProperty().divide(2));
VBox rightCol = new VBox(runButtons);
rightCol.setStyle(blackBorder);
Button save = new Button("Save");
Button del = new Button("Delete");
HBox settings = new HBox(save, del);
save.prefWidthProperty().bind(settings.widthProperty().divide(3)); // 1/3
del.prefWidthProperty().bind(settings.widthProperty().divide(3).multiply(2)); // 2/3
VBox leftCol = new VBox(settings);
leftCol.setStyle(blackBorder);
GridPane root = new GridPane();
ColumnConstraints col1 = new ColumnConstraints();
col1.setPercentWidth(50);
ColumnConstraints col2 = new ColumnConstraints();
col2.setPercentWidth(50);
root.getColumnConstraints().addAll(col1,col2);
root.addRow(0, leftCol,rightCol);
Scene scene = new Scene(root, 800, 600);
stage.setScene(scene);
stage.show();
}
public static void main(String... a) {
Application.launch(a);
}
}

how to pause sequential transition of JAVAFX

Code below show part of the function of my sequential transition,i wish to use Pslideshow.pause() to enable user to pause the slide and also continue play the slide.
But i realised, once i use Pslideshow.play() , the status of the Pslideshow change into Stopped immediately when i clicked on the pane which i create to display the slide.
What should i do in order to allow user to pause and play again my sequential transition? Thanks in advance!
public void start(){
for (Label slide : LabelSlides) {
SequentialTransition sequentialTransition = new SequentialTransition();
FadeTransition fadeIn = getFadeTransition(slide, 0.0, 1.0, 2000);
PauseTransition stayOn = new PauseTransition(Duration.millis(2000));
FadeTransition fadeOut = getFadeTransition(slide, 1.0, 0.0, 2000);
sequentialTransition.getChildren().addAll(fadeIn, stayOn, fadeOut);
slide.setOpacity(0);
this.root.setStyle("-fx-background-color: Black");
this.root.getChildren().add(slide);
Pslideshow.getChildren().add(sequentialTransition);
}
Pslideshow.play();
}
#FXML
public void PlaySlide(ActionEvent event) throws IOException
{ Node node=(Node) event.getSource();
Stage stage=(Stage) node.getScene().getWindow();
Stage newStage = new Stage();
newStage.setWidth(stage.getWidth());
newStage.setHeight(stage.getHeight());
Scene_3Controller simpleSlideShow = new Scene_3Controller();
Scene scene = new Scene(simpleSlideShow.getRoot());
MediaP.play();
simpleSlideShow.start();
scene.setOnMouseClicked(new ClickHandler());
newStage.setScene(scene);
newStage.show();
}

The code is copied from the SequentialTransitionStatus gist that I created to explain how SequentialTransition can change different status i.e. RUNNING, PAUSED, STOPPED.
import javafx.animation.FadeTransition;
import javafx.animation.PauseTransition;
import javafx.animation.SequentialTransition;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Duration;
public class SequentialTransitionStatus extends Application {
#Override
public void start(Stage primaryStage) {
Label slide = new Label("slide");
slide.setOpacity(0);
FadeTransition fadeIn = new FadeTransition(Duration.millis(2000), slide);
fadeIn.setFromValue(0);
fadeIn.setToValue(1);
PauseTransition stayOn = new PauseTransition(Duration.millis(1000));
FadeTransition fadeOut = new FadeTransition(Duration.millis(2000), slide);
fadeOut.setFromValue(1);
fadeOut.setToValue(0);
SequentialTransition sequentialTransition = new SequentialTransition();
sequentialTransition.getChildren().addAll(fadeIn, stayOn, fadeOut);
Label status = new Label();
status.textProperty().bind(sequentialTransition.statusProperty().asString());
Button play = new Button("Play");
play.setOnAction(event -> sequentialTransition.play());
Button pause = new Button("Pause");
pause.setOnAction(event -> sequentialTransition.pause());
HBox hBox = new HBox(10, play, pause);
hBox.setAlignment(Pos.CENTER);
VBox box = new VBox(20, slide, hBox, status);
box.setAlignment(Pos.CENTER);
Scene scene = new Scene(box, 300, 250);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}

Bookmarks and History Buttons not showing up in my Browser using JavaFX

I am making a web browser in JavaFX and I thought everything was good and dandy. I ran the application and now the History and Bookmarks buttons will not appear. I looked through the code and saw no errors. How do I fix this?
package javafxapplication3;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.application.Application;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.BorderPane;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import javafx.scene.web.WebHistory;
public class CreateAsIGo2 extends Application{
public static void main(String[] args){
launch(args);
}
public void start(Stage primaryStage){
BorderPane ap = new BorderPane();
BorderPane ap2 = new BorderPane();
BorderPane ap3 = new BorderPane();
Scene scene = new Scene(ap, 700, 700);
Scene scene2 = new Scene(ap2, 700, 700);
Scene scene3 = new Scene(ap3, 700, 700);
VBox sp = new VBox();
VBox sp2 = new VBox();
VBox sp3 = new VBox();
Button HistoryButton = new Button("History");
Button BookmarksButton = new Button("Bookmarks");
Button RefreshButton = new Button("Refresh");
Button BackButton = new Button("Back");
Button BackToBrowser = new Button("Back to surfing the web");
Button ForwardButton = new Button("Forward");
TextField tf = new TextField();
tf.setPromptText("URL");
WebView browser = new WebView();
WebEngine webEngine = browser.getEngine();
webEngine.load("http://www.google.com");
webEngine.setJavaScriptEnabled(true);
WebHistory history = webEngine.getHistory();
HistoryButton.setOnAction(e -> primaryStage.setScene(scene2));
BookmarksButton.setOnAction(e -> primaryStage.setScene(scene3));
RefreshButton.setOnAction(e -> webEngine.reload());
BackButton.setOnAction(e -> webEngine.executeScript("history.back()"));
BackToBrowser.setOnAction(e -> primaryStage.setScene(scene));
ForwardButton.setOnAction(e -> webEngine.executeScript("history.forward()"));
tf.setOnKeyPressed((KeyEvent ke) -> {
KeyCode key = ke.getCode();
if(key == KeyCode.ENTER){
webEngine.load("http://" + tf.getText());
}
});
sp.getChildren().addAll(HistoryButton, BookmarksButton, RefreshButton, BackButton, ForwardButton);
sp2.getChildren().addAll(BookmarksButton, BackToBrowser);
sp3.getChildren().addAll(HistoryButton, BackToBrowser);
ap.setRight(sp);
ap2.setRight(sp2);
ap3.setRight(sp3);
ap.setTop(tf);
ap.setCenter(browser);
browser.setPrefSize(700, 700);
primaryStage.setTitle("JTG Browser Alpha");
primaryStage.setScene(scene);
primaryStage.show();
}
}

See the node documentation:
If a program adds a child node to a Parent (including Group, Region, etc) and that node is already a child of a different Parent or the root of a Scene, the node is automatically (and silently) removed from its former parent.
You are adding your HistoryButton (and other buttons) to different scenes and, when you do so, they are automatically removed from the previous scenes. You need to create new button instances if you want them visible in every scene.
Small aside: it is best to follow Java naming conventions, e.g. historyButton instead of HistoryButton.

How to align a button into the bottom right corner in JavaFX?

I'm extremely new to JavaFX, and I'm attempting to get a button(specifically scrapeBtn) into the bottom right corner of an application. Here is what I have so far:
package main;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class Driver extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) {
Button scrapeBtn = new Button();
scrapeBtn.setText("Scrape!");
scrapeBtn.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
System.out.println("Scrape button pressed.");
}
});
TextField console = new TextField();
GridPane root = new GridPane();
GridPane.setConstraints(scrapeBtn, 2, 2, 1, 1);
root.getChildren().add(scrapeBtn);
root.getChildren().add(console);
Scene scene = new Scene(root, 600, 400);
primaryStage.setTitle("Wiki Scraper");
primaryStage.setScene(scene);
primaryStage.show();
}
}
Any ideas as to how I could accomplish this? Some tips in general to aligning and formatting things with JavaFX would also be really appreciated.
Thanks.

I often use a BorderPane for similar purposes (e.g. a Dialog with some text and controls etc. at the center and one or more buttons at the bottom). Therefore, I use the BorderPane as root and a HBox as "button container" at the bottom. Finally, I set the botton alignment to "RIGHT".
Here an example based on your code:
#Override
public void start(Stage primaryStage) {
// center
VBox vbCenter = new VBox(); // use any container as center pane e.g. VBox
TextField console = new TextField();
vbCenter.getChildren().add(console);
// bottom respectively "button area"
HBox hbButtons = new HBox();
Button scrapeBtn = new Button();
scrapeBtn.setText("Scrape!");
scrapeBtn.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
System.out.println("Scrape button pressed.");
}
});
hbButtons.getChildren().add(scrapeBtn);
hbButtons.setAlignment(Pos.CENTER_RIGHT);
// root
BorderPane root = new BorderPane();
root.setPadding(new Insets(20)); // space between elements and window border
root.setCenter(vbCenter);
root.setBottom(hbButtons);
Scene scene = new Scene(root, 600, 400);
primaryStage.setTitle("Wiki Scraper");
primaryStage.setScene(scene);
primaryStage.show();
}
This code leads to this (after resizing the window a little bit):

You can use two BorderPanes to place a control bottom right
#Override
public void start(Stage primaryStage) throws Exception {
BorderPane root = new BorderPane();
BorderPane bottom = new BorderPane();
bottom.setRight(new Button("I am placed bottom right"));
root.setBottom(bottom);
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.setWidth(400);
primaryStage.setHeight(400);
primaryStage.show();
}