I want to animate sorting algorithms within a canvas in a javafx app. Frstly I have everything within a Border Panel. In the Left section I have a Scroll Pane with a Vbox within that holding the menu buttons for selecting the specific algorithm to animate. In the Center section I have a Vbox with a Canvas in it that I want to animate the visualizations in. My question is how to set the scene to animate the visualization within the Canvas on menu button click? Say I have a BubbleSort class that I want to animate in the Canvas. Would I accomplish this through Main or a controller? My current Main is below:
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("views/HomeView.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.setScene(new Scene(root, 300, 275));
root.getStylesheets().add("app/styling/css/styles.css");
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
In a JavaFX Application, the main method's purpose (actually the start method) is only to initialize the FXML and other major pieces. The bulk of your UI logic should be contained in your Controller class.
First, you need to define an action handler in your controller. There are many tutorials available online, and it is a fairly simple task in Scenebuilder. Google is your best friend here.
For animations, since JavaFX doesn't allow its displayed contents to be modified by threads other than the JavaFX Application Thread, in which the main application runs, you will have to use classes from the javafx.animationpackage. See Creating Transitions and Timeline Animation in JavaFX.
Related
I have a class called MapCanvas that extends Canvas from the JavaFX library. On this canvas, I'd like to create a method that allows a button to be placed on the canvas itself (instead of a pane on top), such that when I pan and zoom in on the canvas, the button keeps the coordinates that were specified when created (so it moves around when I drag the canvas).
The method would look like this:
public void addButton(Button button) {
// add the button to the canvas
}
So my question is: Is it possible to add a method like this, and if so, how?
I have a 2D GUI declared in an FXML file. The GUI contains a pane, I want to make a 3D scene within the pane. How would I go about doing this?
Use a SubScene, which, like a Scene has a camera, depth buffering, etc.
I'm having a hard time figuring out how to make a transparent background for an application window in javafx. scene.setFill(null) seems to only work with stage.initStyle(StageStyle.TRANSPARENT). Doc for setFill says
Both a null value meaning paint no background and a Paint with transparency are supported, but what is painted behind it will depend on the platform.
but that doesn't make sense to me. It works (on windows 8) only with StageStyle.TRANSPARENT which removes the exit button and such which I still want.
I've looked at http://www.adam-bien.com/roller/abien/entry/completely_transparent_windows_stage_in and a few questions here.
Can this be done on windows?
I've been tinkering with similar settings, and this works for me:
#Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.initStyle(StageStyle.TRANSPARENT);
primaryStage.setOpacity(0.5);
primaryStage.setFullScreen(true);
Scene scene = new Scene(root, 300, 275);
primaryStage.setScene(scene);
scene.getStylesheets().add(Main.class.getResource("main.css")
.toExternalForm());
primaryStage.show();
}
...and the css
.root {
-fx-background-color: rgba(0,0,0,0.5);
}
You can use this library. It is a fully customizable JavaFx Stage (CustomStage). You can see in-detail description of how to use it in this CustomStage Wiki
It has,
Window resizing
Default action buttons and their behaviour (close, maximize/restore, minimize)
Window dragging
Window is automatically scaled as for screen resolution
Very responsive
Stylable
Can achieve transparency
Has in-built navigation panes and drawers
etc.
I have an application that uses a javafx Scene to render something, and I want to put that rendering into some GUI that I made, also in javafx. How would I do that?
Basically is there some container I can put a scene into and then put that container into the GUI.
Sorry if it's a newbie question, I am new to JavaFX
Java 8 has a SubScene, for which some possible uses (from the javadoc) are:
The SubScene class is the container for content in a scene graph.
SubScene provides separation of different parts of a scene, each of
which can be rendered with a different camera, depth buffer, or scene
anti-aliasing. A SubScene is embedded into the main scene or another
sub-scene. Possible use cases are:
Mixing 2D and 3D content
Overlay for UI controls
Underlay for background
Heads-up display
A SubScene is just a Node, so you can place it in the scene graph of an existing scene wherever you want. An example of SubScene usage is in the answer to: How to create custom 3d model in JavaFX 8?
Generally SubScenes are for mixing 2D and 3D content. If you are not doing that, then SubScenes probably don't apply to your situation and Uluk's answer will better serve your needs.
The scene has only a top parent node as a root. You can get it and to put into another scene.
((Pane) scene2.getRoot()).getChildren().add(scene1.getRoot());
I am trying to create a splash screen like the example I've provded.
It seems that AnchorPane does not allow transparent background, I've tried setting the css of the AnchorPane to -fx-background-color: rgba(255,0,255,0.1) ; but the white background still shows up.
All I have in my fxml file is a AnchorPane with ImageView with contain the png image
I've looked everywhere but can't find any solution, any help would be appreciated. Thanks
Try this JavaFX splash sample created for the Stackoverflow question: Designing a splash screen (java). And a follow up sample which also provides application initialization progress feedback.
JavaFX does offer the Preloader interface for smooth transfer from splash to application, but the above samples don't make use of it.
The splash samples above also don't do the transparent effect, but this dialog sample shows you how to do that and you can combine it with the previous splash samples to get the effect you want.
The transparent effect is created by:
stage.initStyle(StageStyle.TRANSPARENT).
scene.setFill(Color.TRANSPARENT).
Ensuring your root node is not an opaque square rectangle.
Which is all demonstrated in Sergey's sample.
Related question:
How to use javaFX Preloader with stand-alone application in Eclipse?
Update Apr 2016 based on additional questions
the preloader image isnt in the foreground. I have tried stage.toFront(), but doesnt help.
A new API was created in Java 8u20 stage.setAlwaysOnTop(true). I updated the linked sample to use this on the initial splash screen, which helps aid in a smoother transition to the main screen.
For Java8+
For modena.css (the default JavaFX look and feel definition in Java 8), a slight shaded background was introduced for all controls (and also to panes if a control is loaded).
You can remove this by specifying that the default background is transparent. This can be done by adding the following line to your application's CSS file:
.root { -fx-background-color: transparent; }
If you wish, you can use CSS style classes and rules or a setStyle call (as demonstrated in Sergey's answer) to ensure that the setting only applies to the root of your splash screen rather than all of your app screens.
See related:
how to make transparent scene and stage in javafx?
You need to have transparent Stage and Scene for that. Pane itself doesn't have a color.
public void start(Stage primaryStage) {
Button btn = new Button("Say 'Hello World'");
AnchorPane root = new AnchorPane();
root.getChildren().add(btn);
// Java 8: requires setting the layout pane background style to transparent
// https://bugs.openjdk.java.net/browse/JDK-8092764
// "Modena uses a non-transparent background by default"
root.setStyle("-fx-background-color: transparent;");
Scene scene = new Scene(root, 300, 250, Color.TRANSPARENT);
primaryStage.initStyle(StageStyle.TRANSPARENT);
primaryStage.setScene(scene);
primaryStage.show();
}