The center of my BorderPane has a stackpane called designView (an FXML defined stackpane). I'm trying to get a draggable pane in the designView. If I add that pane to the rootView (my BordePane) all is well. If however I try to add it to the designView like this:
// This works fine except the pnae is on the wrong place obviously
....
Pane p = displayField.createDraggablePane(800.0, 800.0, 400.0, 300.0);
rootView.getChildren().add(p);
// Now the pane is in the right place, but it's 'stuck'
....
rootView.setCenter(designView);
Pane p = displayField.createDraggablePane(800.0, 800.0, 400.0, 300.0);
designView.getChildren().add(p);
The pane appears correctly in the designView, BUT it is no longer draggable. The MouseEvents fire, but the position of the pane is not updated. I think the problem is with the fact that layoutX, getSceneX, layoutXProperty etc. have no reference to designView, but how do I get that? Can anyone help?
I found a solution. Instead of adding a StackPane to my BorderPane center, I have added a Pane and all is well :-) So my draggable Pane is added to a Pane instead of added to a StackPane.
Don't quite understand why this should change the behaviour of the draggable pane, but practice shows that it does.
Related
Im doing my 1st JavaFx project using scene builder 2.0. When I set the fullscreen method true, the anchor pane goes to full screen but the controllers inside the container doesn't adjust according to the adjusted pane size. It will be a great help if someone could point me out where I have messed up.
This is the code I have used in the main program.
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
javafx.geometry.Rectangle2D r = Screen.getPrimary().getBounds();
Scene scene = new Scene(root,r.getWidth(), r.getHeight());
String css = this.getClass().getResource("newCascadeStyleSheet.css").toExternalForm();
stage.setScene(scene);
scene.getStylesheets().add(css);
stage.show();
}
Ive set the sizes padding and everything using scene builder options.
Thanks in advance.
I think what you are missing is a Fit to parent setting in your view.
As you are using SceneBuilder, I suggest you to try the following: in the Hierarchy view (left side) right-click your component and select Fit to parent.
This is an example (taken from this awesome tutorial):
I have a problem with changing the location of my Button i want to set a Specific location where to put it but when i use .setLayoutX and .setLayoutY i even tried using .relocate and it is still not working am i doing something wrong? here is my sample code.
CODE
Button b1 = new Button();
b1.setText("Press");
b1.setLayoutX(100);
b1.setLayoutY(120); // this are just some randome numbers for this sample
StackPane pane = new StackPane();
pane.getChildren().add(b1);
Scene scene = new Scene(pane,500,500);
stage.setScenes(scene);
stage.show();
when i run the program the button is still in the center of the screen am doing something wrong?
Use Anchor pane or a pane to align nodes as per your layout.
StackPane, GridPane and many panes they come with inbuilt layout methods, you dont have control on locating the nodes based on x and y values.
Can someone please explain me why this strange behaviour exists? When I have a group in a vbox every item in a child appears to modify the siblings to.
Following strange behaviour happens:
everything normal here
here too everything normal
whoops, why did the searchbar move???
First of the structure of the application I have:
root (VBox) //vbox so the menubar has its own space
├───menubar (MenuBar)
└───contentroot (Group)
├───searchbar (TextField) //searchbar should always be on the top left
└───nodeRoot (Group)
├───circle1 (Nodes)
└───circle2 (Nodes)
The root is a vbox so the menubar has its own unchallenged space. The searchbar should always be top left, directly under the menubar.
The nodeRoot should contain every other node. Kinda like a drawing board which I should be able to drag around.
Code:
public void start(Stage primaryStage) throws Exception{
VBox root = new VBox();
MenuBar menuBar = new MenuBar(new Menu("File"));
Group contentRoot = new Group();
contentRoot.getChildren().add(new TextField("SearchBar"));
Group nodeRoot = new Group();
contentRoot.getChildren().add(nodeRoot);
root.getChildren().addAll(menuBar, contentRoot);
Circle circle = new Circle(30, Color.RED);
nodeRoot.getChildren().add(circle);
Scene scene = new Scene(root, 300, 275);
primaryStage.setScene(scene);
primaryStage.show();
scene.setOnMousePressed(event -> {
circle.setTranslateX(event.getSceneX() - 15);
circle.setTranslateY(event.getSceneY() - 15);
});
}
My guess why this happens:
The problem started to appear after I added the menubar and put everything into a VBox. This is when the siblings of the nodeRoot get changed too. My guess is that because VBox is a Region the behaviour is different than a normal group which expands. But then I dont understand why it only happens if the item moves to the left or top.
Can somebody please explain why this happens and how I can fix it?
From the javadocs for Group:
A Group will take on the collective bounds of its children and is not
directly resizable.
When you click near the top or left of the scene, the circle's bounds include negative values. Since the group takes on those bounds, it also takes on negative values. The TextField never has any layout bounds set, so the Group positions it at (0,0). Hence the text field can end up below or to the right of the circle. The vbox positions the group in order to try and contain it entirely, so it shifts it right if it contains negative x-value bounds and down if it contains negative y-value bounds.
If you use a Pane to contain the circle, instead of a Group:
Pane contentRoot = new Pane();
it behaves more intuitively: the Pane does not take on the union of the bounds of its child nodes, so if the circle has negative bounds, it just moves left and/or above the pane's visible area.
I am trying to learn JavaFX and I've run into a problem with the Menus in my MenuBar. Here is a minimal example:
public void start(Stage mainStage) throws Exception {
BorderPane root = new BorderPane();
Scene scene = new Scene(root, 1200, 1000, Color.WHITE);
MenuBar menuBar = new MenuBar();
Menu menuFile = new Menu("_File");
menuBar.getMenus().add(menuFile);
MenuItem add = new MenuItem("_New");
menuFile.getItems().add(add);
root.getChildren().add(menuBar);
menuBar.prefWidthProperty().bind(mainStage.widthProperty());
mainStage.setScene(scene);
mainStage.show();
}
This application starts, but the Menu in the MenuBar is only shown as three dots (...). It does open however when I press ALT+F, so it is there.
From what I understand, a Menu item has no width or similar attribute, so that can't be set. I suspect it has something to do with my root node being a BorderPane, because in every other example I found that works, the root is either a VBox or something else. I seem to get the desired results when I place a Vbox as my root node, and then add the MenuBar and the BorderPane` to the root - but that seems like a strange and uneccesary workaround to me.
So what am I missing here? Is it true that a MenuBar will only ever look like it should in certain containers? What is the difference between a BorderPane and a VBox in this regard? If someone could explain or point me to a part of the documentation that I've missed, I would be very thankful.
You are using a BorderPane and using getChildren().add() to add MenuBar in it, which is incorrect. BorderPane unlike VBox, can't accept any number of children and is divided into 5 specific positions :
top
left
right
bottom
center
The children goes into any one of these positions. Please go through the documentation for BorderPane.
You need to add the Menubar to the top of the BorderPane using :
root.setTop(menuBar);
I'm trying to load a FXML into a FXML. The main FXML has a borderpane, and the second contains a VBox. I load both of these with the FXMLLoader. When I try to set the center of the boarderpane, the entire screen gets replaced with the second FXML. Here is the code
BorderPane riskAnalysis = new BorderPane((BorderPane) FXMLLoader.load(getClass().getResource("./proposaldevelopment/riskAnalysis.fxml")));
VBox center = new VBox((VBox) FXMLLoader.load(getClass().getResource("./proposaldevelopment/openRiskAssessmentVbox.fxml")));
riskAnalysis.setCenter(center);
root = riskAnalysis;
stage.getScene().setRoot(root);
Any ideas that could cause this? I also tried making a new label and putting that into the borderpane center with the same result.
Try as
BorderPane riskAnalysis = (BorderPane) FXMLLoader.load(getClass().getResource("./proposaldevelopment/riskAnalysis.fxml"));
VBox center = (VBox) FXMLLoader.load(getClass().getResource("./proposaldevelopment/openRiskAssessmentVbox.fxml"));
riskAnalysis.setCenter(center);
stage.getScene().setRoot(riskAnalysis);