I want a ScrollPane in my application window which doesn't fill the whole scene, but only takes up part of it, because I want to place a button beneath it.
Like in this sketch: https://i.imgur.com/eUA7Af7.png
I tried using a GridPane, but I can only put Nodes as children of the GridPane, which doesn't work because the ScrollPane is not a Node.
public void start(Stage stage) throws Exception {
var root = new GridPane();
var scene = new Scene(root, 400, 400);
var scrollPane = new ScrollPane();
root.add(scrollPane, 0, 0); // Not possible
var button = new Button();
root.add(button, 0, 1);
stage.setScene(scene);
stage.show();
}
Slaw's comment:
javafx.scene.control.ScrollPane definitely is a javafx.scene.Node. The class hierarchy is: ScrollPane → Control → Region → Parent → Node
Related
I have a JavaFX VBox inside a BorderPane (central). The content of the VBox is calculated using some business logic and it depends on the height of the visible part of the vbox.
So basically I need a listener watching changes of the visible height of the vbox = height of the central part of the border pane.
The following code demonstrates what I have tried:
public class HelloFX extends Application {
#Override
public void start(Stage primaryStage) {
VBox vbox = new VBox();
vbox.boundsInParentProperty()
.addListener((obs, oldValue, newValue) ->
System.out.println(newValue.getHeight()));
Button button = new Button("ADD LINE");
button.setPrefHeight(25);
button.setOnAction(event ->
vbox.getChildren().add(new Label("line")));
BorderPane borderPane = new BorderPane();
borderPane.setCenter(vbox);
borderPane.setTop(button);
Scene scene = new Scene(borderPane, 100, 100);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch();
}
BorderPane with simple button on the top position and VBox on the central. The button click adds one line to vBox. Total scene height is 100, 25 is the button height and the rest (75) is the vBox.
I'm looking for some listener to report changes of the height of the central part of border pane. So in my example it should always print "75" no matter how many lines I have added to the vBox. The only event changing the value should be resizing the whole window. In reality once the vBox is filled my listener reports increasing height values. Apparently the height property includes the invisible part of the vbox.
EDIT
Finally I've found some solution - placing the vBox in the ScrollPane with disabled scrollbars. Then I can simply listen on the height property of the scrollpane and everything works as expected.
public class HelloFX extends Application {
#Override
public void start(Stage primaryStage) {
VBox vbox = new VBox();
ScrollPane scrollPane = new ScrollPane();
scrollPane.setVbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
scrollPane.setContent(vbox);
scrollPane.heightProperty()
.addListener((obs, oldValue, newValue) ->
System.out.println(newValue));
Button button = new Button("ADD LINE");
button.setPrefHeight(25);
button.setOnAction(event ->
vbox.getChildren().add(new Label("line")));
BorderPane borderPane = new BorderPane();
borderPane.setCenter(scrollPane);
borderPane.setTop(button);
Scene scene = new Scene(borderPane, 100, 100);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch();
}
}
I wanna it will be okay when the number variables is changed, but when the are increased the button goes out from the window. How to fix it? Also how to put the bar down to the level of "10$", so they will be in the same row?
Before :
After :
Here is my code :
VBox vboxBottom = new VBox();
HBox hboxBottomElements = new HBox(15);
HBox hboxBottomMain = new HBox(0);
Region region = new Region();
region.setPrefWidth(500);
hboxBottomElements.getChildren().addAll(visaLabel, separator2, adLabel, separator3, governRelationStatus, separator4, region, next);
hboxBottomElements.setPadding(new Insets(5));
vboxBottom.getChildren().addAll(separator1, new Group(hboxBottomElements));
vboxBottom.setPadding(new Insets(3));
hboxBottomMain.getChildren().addAll(new Group(moneyBox), vboxBottom);
hboxBottomMain.setPadding(new Insets(3));
layout.setBottom(hboxBottomMain);
By using a Group here
vboxBottom.getChildren().addAll(separator1, new Group(hboxBottomElements));
you're creating a layout structure that resizes hboxBottomElements to it's prefered size independent of the space available.
HBox simply moves elements out the right side of it's bounds, if the space available does not suffice. This means if the Group containing moneyBox grows, the Button is moved out of the HBox...
The following simpler example demonstrates the behavior:
#Override
public void start(Stage primaryStage) {
Button btn = new Button("Do something");
HBox.setHgrow(btn, Priority.NEVER);
btn.setMinWidth(Region.USE_PREF_SIZE);
Region filler = new Region();
filler.setPrefWidth(100);
HBox.setHgrow(filler, Priority.ALWAYS);
Rectangle rect = new Rectangle(200, 50);
HBox hBox = new HBox(rect, filler, btn);
Scene scene = new Scene(hBox);
primaryStage.setScene(scene);
primaryStage.show();
}
This will resize filler to make the HBox fit the window.
Now replace
Scene scene = new Scene(hBox);
with
Scene scene = new Scene(new Group(hBox));
and the Button will be moved out of the window...
I've been trying to make a toolbar inside a window with a checkers game, what happens now is, Checkers game opening in a separate window and so is the toolbar, what am I doing wrong? How can I make this code open in one window with both functions?
#Override
public void start(Stage primaryStage) throws Exception {
Stage toolStage = new Stage();
Button btnNewGame = new Button("New Game");
Button btnConcede = new Button("Concede");
Button btnNetwork = new Button("Network");
ToolBar toolBar = new ToolBar();
toolBar.getItems().addAll( new Separator(), btnNewGame, btnConcede, btnNetwork);
BorderPane pane = new BorderPane();
pane.setTop(toolBar);
Scene toolScene = new Scene(pane, 600, 400);
toolStage.setScene(toolScene);
toolStage.show();
Scene scene = new Scene(createContent());
primaryStage.setTitle("Dam spill - OBJ2000 Eksamen 2016");
primaryStage.setScene(scene);
primaryStage.show();
}
You're creating a new Scene+Stage fot the toolbar, show it and then show the content in the primaryStage instead of adding both toolbar and content as parts of the same scene, e.g. by adding the content as center node of the BorderPane:
#Override
public void start(Stage primaryStage) throws Exception {
Button btnNewGame = new Button("New Game");
Button btnConcede = new Button("Concede");
Button btnNetwork = new Button("Network");
ToolBar toolBar = new ToolBar();
toolBar.getItems().addAll( new Separator(), btnNewGame, btnConcede, btnNetwork);
BorderPane pane = new BorderPane();
pane.setTop(toolBar);
pane.setCenter(createContent());
Scene scene = new Scene(pane, 600, 400);
primaryStage.setTitle("Dam spill - OBJ2000 Eksamen 2016");
primaryStage.setScene(scene);
primaryStage.show();
}
I'm trying to use the translateZ property on a VBox to move the panel "into the screen".
If I use setTranslateZ() on the root node this works fine. However if I change root.setTranslateZ(200); to panel.setTranslateZ(200); the window is blank.
public class Demo01HelloWorld3D extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
Button button = new Button("Press me");
VBox panel = new VBox(button);
panel.setAlignment(Pos.CENTER);
panel.setDepthTest(DepthTest.ENABLE);
VBox root = new VBox(panel);
root.setAlignment(Pos.CENTER);
root.setDepthTest(DepthTest.ENABLE);
root.setTranslateZ(200);
// panel.setTranslateZ(200); <== I want this to work
Scene scene = new Scene(root, 320, 240, true);
primaryStage.setScene(scene);
scene.setCamera(new PerspectiveCamera(false));
primaryStage.show();
}
}
Setting translateZ on the root node
Setting translateZ on the panel node
Things I've tried
Setting depthTest attribute to enable - although I don't think this is necessary as it defaults to DepthTest.INHERIT
Lots of searching for similar questions!
Checking SCENE3D is enabled - yes it is
Checking the javadoc for translateZProperty
checked Z value is less than camera clippingFar property
Looked at Oracle JavaFX 3D tutorial - this does not specifically address 3D with standard controls and containers etc.
With panel.setTranslateZ(200); you're pushing the panel behind the root, so the root obscures it.
Add root.setStyle("-fx-background-color: transparent;"); and it works:
#Override
public void start(Stage primaryStage) throws Exception {
Button button = new Button("Press me");
VBox panel = new VBox(button);
panel.setAlignment(Pos.CENTER);
panel.setDepthTest(DepthTest.ENABLE);
VBox root = new VBox(panel);
root.setAlignment(Pos.CENTER);
root.setDepthTest(DepthTest.ENABLE);
root.setStyle("-fx-background-color: transparent;");
panel.setTranslateZ(200);
Scene scene = new Scene(root, 320, 240, true);
primaryStage.setScene(scene);
scene.setCamera(new PerspectiveCamera(false));
primaryStage.show();
}
i have tried a below sample, in which left area of border Pane will have list of components and center of the border pane will act as a canvas area and here i have added a rectangle on run time as children to a Pane which is set to Center portion of BorderPane. But when drag the rectangle it moving outof the area allocated for the center, so how could i make this drag around only inside the Center Pane.
#Override
public void start(Stage stage) throws Exception {
stage.setTitle("BPM");
BorderPane border = new BorderPane();
Pane canvas = new Pane();
canvas.setStyle("-fx-background-color: #F0F0F0;");
border.setLeft(compList());
border.setCenter(canvas);
//
Anchor start = new Anchor(null, "Start", Color.PALEGREEN, new SimpleDoubleProperty(170), new SimpleDoubleProperty(170));
final Rect rect=new Rect(100, 70,new SimpleDoubleProperty(10), new SimpleDoubleProperty(100));
rect.setX(100);
rect.setY(100);
canvas.getChildren().add(rect);
canvas.getChildren().add(start);
Scene scene = new Scene(border, 800, 600);
stage.setScene(scene);
stage.show();
}
Actually, by default, the Pane class does not ensure that all its children are clipping hence there are possibility that the children might go out of the boundary of the Pane. To ensure that all children (in your case, the rectangle) are dragged within specify boundary, you have to manually check the boundary as you dragging the children. Below are example of my implementation:
#Override
public void start(Stage stage){
stage.setTitle("BPM");
BorderPane mainPanel = new BorderPane();
VBox nameList = new VBox();
nameList.getChildren().add(new Label("Data"));
nameList.setPrefWidth(150);
Pane canvas = new Pane();
canvas.setStyle("-fx-background-color: #ffe3c3;");
canvas.setPrefSize(400,300);
Circle anchor = new Circle(10);
double rectWidth = 50, rectHeight = 50;
Rectangle rect = new Rectangle(50,50);
rect.setX(100);
rect.setY(100);
canvas.getChildren().addAll(rect, anchor);
// set the clip boundary
Rectangle bound = new Rectangle(400,300);
canvas.setClip(bound);
rect.setOnMouseDragged(event -> {
Point2D currentPointer = new Point2D(event.getX(), event.getY());
if(bound.getBoundsInLocal().contains(currentPointer)){
if(currentPointer.getX() > 0 &&
(currentPointer.getX() + rectWidth) < bound.getWidth()){
rect.setX(currentPointer.getX());
}
if(currentPointer.getY() > 0 &&
(currentPointer.getY() + rectHeight) < bound.getHeight()){
rect.setY(currentPointer.getY());
}
}
});
mainPanel.setLeft(nameList);
mainPanel.setCenter(canvas);
Scene scene = new Scene(mainPanel, 800, 600);
stage.setScene(scene);
stage.show();
}