I am trying to move things such as buttons and labels that I put inside a StackPane since I want these things to stay centered when minimizing or maximizing windows. When I put everything I want into the StackPane, they all get centered and layered up on each other. How am I able to move these elements around in the StackPane if it's possible or how will I be able to keep everything centered when resizing the window?
You edit their TranslateX and TranslateY properties. for instance
Label label1 = new Label();
label1.setText("0");
label1.TranslateX(-10.0); //<< moves the label 10 pixels to the left.
if you are using Scene Builder you can edit these properties on the right under the "layout" tab.
Related
I creating site builder and I want anchorpane at center of another pane. I have 3 anchor panes in SplitPane and in the central pane I need rezise of object like scene builder have when you resize scene builder. How to make that resizing? Is it very hard? I want to make this in fxml or directly in scene builder. I use IntelliJ.
This picture is show how it look when you open at first time and it need to be always 16:9 (central pane). Maybe you know what pane can be it
And this is how it look when you open in full-screen
In this example I tried to use borderPane and I put empty anchorpane's in all other corners because when you put something in center it fit all borderPane. How I remember when you do this thing in anchorPane with constraints (like 100px from upper corner) it looks the same.
How to do normal 16:9 all-time resizing?
How can I center the text of a Label in javafx ? In the .css stylesheet or directly in the fxml.
I tried Label { -fx-text-alignment: center;} in the .css but it does not work. Even in the scene builder it does not work.
You basically have two choices:
Use a layout pane that can center the label, and let the label be its "preferred size" (i.e. just big enough to hold the text), or
Make the label fill the entire width of its container, and set its alignment property to center.
You said in the comments that you're using an AnchorPane as the label's parent. This generally isn't usually a particularly good choice for a layout pane (essentially you have to hardcode the bounds of each control), and you can't center things in it (not without a large amount of work, anyway). So with an anchor pane as parent, you are reduced to choice 2:
label.setMaxWidth(Double.MAX_VALUE);
AnchorPane.setLeftAnchor(label, 0.0);
AnchorPane.setRightAnchor(label, 0.0);
label.setAlignment(Pos.CENTER);
Obviously, all that can be set in FXML too.
In general, though, I would recommend using a more appropriate layout pane and setting the appropriate properties on that layout pane to center the label.
Context: I'm currently writing an application using JavaFX. At the moment I've created a login form that is placed on a Scene within a GridPane, however currently the GridPane is always aligned in the top left corner of the application.
Problem: What I would like to do is center the login form (within a GridPane) into the middle of the window instead of the top left. How would I go about this? Would I need to place the GridPane within another layout and center it that way? Could I somehow designate the positioning of the GridPane using CSS?
I'm using StackPanel as container for my figures, panels, etc. What I discovered, that coordinates X,Y (0,0) are placed right in center of my panel.
Is it possible to move it to left top od Pane ?
Calculating all dimensions from center is much more difficult.
You can set the layout of Nodes added to the StackPane to a position within the Stackpane using the StackPane.setAlignment(node, position) method:
Label topLeftLabel = new Label("Top Left");
StackPane stack = new StackPane();
stack.getChildren().add(topLeftLabel);
StackPane.setAlignment(topLeftLabel, Pos.TOP_LEFT);
Even though this is possible, from your brief description of how you are trying to use the StackPane, it sounds like you would be better off using a regular Pane, or a Group or an AnchorPane for the kind of absolute positioning you appear to be wanting to achieve.
Possibly look into using a visual tool such as SceneBuilder as well. Even if you don't end up using the FXML it outputs, SceneBuilder should give you a much better idea of how JavaFX layout mechanisms work. SceneBuilder makes use of AnchorPane as its default layout pane used to provide absolute positioning for elements (which seems to be what you want to achieve).
The previous answer is of course the best in this situation, but it is also wise to know that you can move Nodes on the StackPane using Translation.
Ex.
Label topLeftLabel = new Label("Top Left");
StackPane stack = new StackPane();
stack.getChildren().add(topLeftLabel);
topLeftLabel.setTranslateX(stack.getWidth()/2);
topLeftLabel.setTranslateY(stack.getHeight()/2);
It would do the same thing (but may look a bit worse)
I have a problem in flex scroll bars. I have a mxml component based on canvas. Inside that I have used a VBox for my form. Above that Vbox I have another canvas just for title.
My form gets longer than normal screen size when the grid inside that is filled with more data. In that case I want a vertical scroll bar just for Vbox in which my form is located. But the whole canvas is getting scrollbar including title canvas. how to solve this problem.
I set vertical scrollbar policy of main canvas to off and inside Vbox's VerticalScrollbarPolicy to on. but that's not working. It is not overriding the property of parent container.
Thanks.
Keep your Form inside a Canvas inside the parent canvas instead of VBox. VBox and HBox are set to grow automatically in the parent container, so if your form grows, your corresponding VBox will grow as well.
You want to overload the "updateDisplayList" function for your parent canvas, and force the height of your form Vbox to be canvasHeight-titleHeight (including padding, space, etc...) so that the VBox never grows larger than the screen. This will solve your problem. Just make sure you check for the existence of the VBox as sometimes the updateDisplayList will be called before it has been instantiated.
Had the same problem myself and decided to take the easy route.
Have the following
App->vbox->[vbox + hbox]
components are dynamically being added to last vbox. Wanted hbox to stay on screen and have scrollbars only in vbox above it(2nd vbox).
Was experiencing the same problem. All containers had scroll policy=off except for last vbox, but when dynamically adding components, when the components filled the vbox > 100%, the outer vbox would start to scroll.
Resolution was simple once I went back to the documentation.
Set scroll policy - horizontal and vert on app and first vbox to off, and also added autoLayout=false. This causes the engine to not resize the components after initialization, ie, they are static sized.
Once I added this property, no more scrollbars except for the inner vbox.
Tada!