I am trying to develop an app using JavaFX 8 and I'm stuck with a resizing problem. The Selected File and Password fields in the below figure doesn't realign as I wish it to be in the AnchorPane..i.e. to be in the center with exact distances from the top navigation bar and the footer. I have tried AnchorPane Constraints in Scene Builder. I was unable to get a perfect match.
Hoping to get an alternate approach or a small overview of AnchorPane constraints.
Note: I'm new to JavaFX graphics library.
Below enclosed are the images and the FXML file that I'm working on.
What I want is this kind of alignment in full screen mode too.
This is the actuality when I switch to full screen.
For a quick fix, try wrapping your AnchorPane in a simple layout, such as an HBox, and set the alignment of the HBox to Pos.CENTER.
However, AnchorPane is probably not the best layout pane to use here. You should read through the layout tutorial and figure out a different strategy: probably you want a BorderPane as the overall structure with HBoxs and/or GridPanes inside.
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A newbie! I know this is the easiest thing to do in my whole project, but for some stupid(I'm the stupid) reason I'm stuck here. I want to use HBox to place a button at a specific (x,y) coordinate. Please help:
//buttons
//HBox hbox = new HBox(200);
Button button = new Button(" Add to meal ");
//get info on all customs
Button button1 = new Button( " Add to list ");
//hbox.getChildren().addAll(button);
//layout
//add to meal button
button.setLayoutX(125.0d);
button.setLayoutY(325.0d);
//add to list button
button1.setLayoutX(130.0d);
button1.setLayoutY(520.0d);
Don’t use a HBox for absolute positioning
HBox isn`t the right layout for absolute positioning, it is an automated layout manager which sizes and positions stuff automatically based on an internal algorithm.
So, even though you are manually setting layout coordinates on child nodes in the HBox, the layout logic inside HBox will overwrite them with the values it calculates.
Instead use a layout that does absolute positioning
There are other layouts like AnchorPane, Pane, and Group that work with absolute positioning. You should research them to ascertain what would be best for your situation.
The simplest layout, which also allows resizing is a Pane, so, if you wanted, you could substitute your HBox for that.
Alternatives to absolute positioning
For most apps, the use of layout panes that provide greater automated layout features, such as Hboxes, VBoxes, BorderPanes, and GridPanes will usually be better choices than a plain Pane layout. These are usually used in conjunction with various configurations and layout hints for the panes, such as instructions on the default alignment of nodes within the pane, or the min/max/pref size of child nodes.
What follows isn't specific to the question, but just advice on learning about JavaFX layouts.
General advice
The Oracle site has useful layout tutorials there and practice.
It is usually better to use automated layout managers, rather than absolute positioning. The automatic layout managers assist in creating GUIs within areas of different sizes with support for dynamic resizing.
Use SceneBuilder to learn about layouts
Download scene builder from Gluon.
Use SceneBuilder to quickly mock up different layouts.
Use the preview feature to try the layouts out to see how they respond to interaction and resizing.
Export the SceneBuilder output to fxml and controller skeletons and inspect the output carefully to understand how the visual design maps to code.
It is much easier and more efficient to create and mock-up layouts in SceneBuilder than in Java code.
But don’t rely only on SceneBuilder for learning about layouts, also write layout logic in Java code so you know how to do that.
I want a Pane that has an ImageView. When i resize the widow with my mouse, i want the ImageView also to grow or shrink.
Im only allowed to use SceneBuilder.
For some reason i just cant get it wo work. I was tweaking setting for about 4 hours, using different panes, different solutions, different options. It just dont work.
Is there an easy way to get an ImageView resized with the window using SceneBuilder ? It does not matter if i use a AnchorPane or Vbox or whatever as Parent.
I'm trying to create a javafx application (in scenebuilder).
How to get transparent stage, with solid items (buttons etc) on it? As it is done in Windows 10 calculator. The buttons are solid but the rest of the pane is transparent.
Thanks in advance.
To do that, first, you need to put the scene in a transparent Stage :
myStage.initStyle(StageStyle.TRANSPARENT);
Be aware: if you do this, you need to use your own exit button, minimize buttons, because the titlebar will be gone.
Then, change the alpha channel of your scene to your desired, say 0.5:
scene.setFill(Color.rgb(0,26,0,0.5));
and finally, the root node's Background needs to be empty:
root.setBackground(Background.EMPTY);
You are done. Now you can change the translucency of your application through the alpha variable.
I'm a bit new to Javafx and have only ever done simple projects with it. I'm currently working on a more complex project and I'm stumbled into an issue with ScrollPanes. I'm struggling to find out how to make the ScrollPane resize in height whenever I resize the application. Here is my structure:
The Pane indicated by the orange arrow works fine, I can add constraints as shown here:
However I do not have the constraint options on the ScrollPane or the AnchorPane inside of the ScrollPane, which results in this upon resizing of the application:
If I remove the parent Pane and just put the ScrollPane in it's place, I can add the constraints, however if I did that I would not be able to properly design the application as I have it now. In short, I'm just curious if there's an alternate method I can use or if I'm just using bad practice, in which case any advice is appreciated.
Pane simply resizes the children to the preferred size and keeps the position. This means no resizing is applied. Also it does not offer any further layout constraints.
You could simply replace the parent pane with a AnchorPane and the anchors become available again.
However a AnchorPane(base) containing that many Panes, probably all with different AnchorPane constraints, indicates that the scene should probably be restructured a bit. E.g. a GridPane, VBox, HBox or a combination of those could help you achieve the desired result in a simpler way.
See Using Built-in Layout Panes for a description of the available layouts and example uses.
The end goal is to reproduce this image as well as possible. I am trying to start from a bottom up approach as I have many questions.
My first question is how can I get labels alongside the textboxes (it has been suggested to use VBoxes on an hbox to organize everything, but then the textbox automatically goes below the label)
My second question is, as you can see there are borders around the four related boxes to separate the information. I am uncertain how this is done.
Finally what is the configuration of Panes that I should put these four groups on. As I mentioned below someone suggested VBoxes placed on a HBox but I can't get the text to be at the right spot with this approach.
One last thing... I was trying to use ComboBoxes but I can only make one selection, unlike in the image showing the appetizers and main courses selected.
I looked at ListView but its not a drop down box and I read in the API that this in general is not supported since they thought having multiple selections was not necessary. So how might one approach this?
Thanks so much
I'de recommaned an HBox as the primary container, and a VBox on the left side containing the three panes.
In case the window is resizable, and you want to keep either of the panes flushed to the side, try AnchorPane, instead of the HBox.
this required nested panes. for those with similar assignments, creating grid boxes and placing them inside titled boxes allows for the "group box" effect shown above that was a part of swing. An additional HBox was added where the image and title were, making three parts: the top HBox, the right title box, and the left VBox.the left VBox and the top HBox were added into a VBox (or grid), linking the entire left side, which was then placed in an hbox along with the right side title pane.