JavaFX Panel inside Panel auto resizing
Solution 1
After hours of searching and testing finally got it just after posting the question!
You can use the "AnchorPane.topAnchor, AnchorPane.bottomAnchor, AnchorPane.leftAnchor, AnchorPane.rightAnchor" fxml commands with the value "0.0" to fit/stretch/align the child elements inside a AnchorPane. So, these commands tell to child element to follow its parent while resizing.
My updated code Main.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane fx:id="anchorPane" xmlns:fx="http://javafx.com/fxml" fx:controller="app.MainController">
<!--<StackPane fx:id="stackPane" ></StackPane>--> <!-- replace with the following -->
<StackPane fx:id="stackPane" AnchorPane.topAnchor="0.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" ></StackPane>
</AnchorPane>
Here is the result:
For api documentation: http://docs.oracle.com/javafx/2/api/javafx/scene/layout/AnchorPane.html
Solution 2
I was designing a GUI in SceneBuilder, trying to make the main container adapt to whatever the window size is. It should always be 100% wide.
This is where you can set these values in SceneBuilder:
Toggling the dotted/red lines will actually just add/remove the attributes that Korki posted in his solution (AnchorPane.topAnchor etc.).
Solution 3
Also see here
@FXML
private void mnuUserLevel_onClick(ActionEvent event) {
FXMLLoader loader = new FXMLLoader(getClass().getResource("DBedit.fxml"));
loader.setController(new DBeditEntityUserlevel());
try {
Node n = (Node)loader.load();
AnchorPane.setTopAnchor(n, 0.0);
AnchorPane.setRightAnchor(n, 0.0);
AnchorPane.setLeftAnchor(n, 0.0);
AnchorPane.setBottomAnchor(n, 0.0);
mainContent.getChildren().setAll(n);
} catch (IOException e){
System.out.println(e.getMessage());
}
}
The scenario is to load a child fxml into parent AnchorPane. To make the child to stretch in accords to its parent use AnChorPane.setxxxAnchor command.
Solution 4
No need to cede.
just select pane ,right click then select Fit to parent.
It will automatically resize pane to anchor pane size.
Korki Korkig
Updated on July 10, 2022Comments
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Korki Korkig almost 2 years
I have a JavaFX application which has only one FXML file. In this file I have one AnchorPane which has a StackPane inside it. Here is the screenshot:
When I start this application, I want to resize StackPane automatically with the AnchorPane. Thus; StackPane will get the current avaliable width and height automatically. At the moment when I resize the application, AnchorPane is being resized automatically but StackPane stays as his fixed size.
How can I resize the StackPane automatically and make it fully stretched inside its parent panel?
My Code
Main.java
package app; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.stage.Stage; public class Main extends Application { public static void main(String[] args) { Application.launch(args); } @Override public void start(Stage stage) throws Exception { Parent root = FXMLLoader.load(getClass().getResource("Main.fxml")); Scene scene = new Scene(root,800,600); scene.getStylesheets().add(this.getClass().getResource("/app/style1.css").toExternalForm()); stage.setScene(scene); stage.show(); } }
MainController.java
package app; import java.net.URL; import java.util.ResourceBundle; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.layout.AnchorPane; import javafx.scene.layout.StackPane; public class MainController implements Initializable { @FXML private AnchorPane anchorPane; @FXML private StackPane stackPane; @Override public void initialize(URL url, ResourceBundle rb) { stackPane.setPrefSize(anchorPane.getPrefWidth(), anchorPane.getPrefHeight()); //didn't work } }
Main.fxml
<?xml version="1.0" encoding="UTF-8"?> <?import java.lang.*?> <?import java.util.*?> <?import javafx.scene.*?> <?import javafx.scene.control.*?> <?import javafx.scene.layout.*?> <AnchorPane fx:id="anchorPane" xmlns:fx="http://javafx.com/fxml" fx:controller="app.MainController"> <StackPane fx:id="stackPane" ></StackPane> </AnchorPane>
style1.css
#anchorPane { -fx-border-width: 2px; -fx-border-color: chartreuse; } #stackPane { -fx-border-width: 2px; -fx-border-color: red; /* didn't work */ -fx-hgap: 100%; -fx-vgap: 100%; }
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blo0p3r about 11 yearsCan you accept this answer. Will allow us to know that there is a solution to this question. Good findings tho, was searching for this.
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Korki Korkig about 11 years@blo0p3r I will but for now system says "You can accept your own answer in 2 days";) Hopefully there comes more other suggestions.
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Marco R about 9 yearsHi. as a button is added. for example. <AnchorPane fx:id="mainContent" ...> <StackPane fx:id="subPane" AnchorPane.topAnchor="0.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" > Button fx:id="button" layoutX="172.0" layoutY="195.0" onAction="#ingresarLogin" prefHeight="35.0" prefWidth="87.0" text="Ingresar" /> </StackPane> </AnchorPane> it is correct?? thanksssss
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Andrew Grothe almost 9 yearsThis also works on other controls, not just Panes. I just used this on a TabbedPane, AnchorPane and TreeView and they all stretch to fit. Very helpful.
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Andrew S about 8 yearsWhat FXML code does this generate? I'd like to see it.
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specializt almost 8 yearswell how about you start SceneBuilder and see for yourself ... its done in literally less than 20 seconds ...
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cubuspl42 about 7 yearsWhy do you keep a StackPane inside AnchorPane, if you want anchors to be 0?
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Korki Korkig about 7 years@cubuspl42 imagine that you want to place at the bottom(inside the green) something like a button and you still want that the panel(red one) stretches along the empty spaces.... I don't remember why precisely but it was usefull and still I think.