JavaFX ToolBar

布满荆棘的人生 2023-10-15 14:22 34阅读 0赞

The *JavaFX ToolBar* class (`javafx.scene.control.ToolBar`) is a horizontal or vertical bar containing buttons or icons that are typically used to select different tools of a JavaFX application. Actually, a JavaFX `ToolBar` can contain other JavaFX controls than just buttons and icons. In fact, you can insert any JavaFX control into a `ToolBar`.

### Creating a ToolBar ###

In order to create a JavaFX `ToolBar` you must first instantiate it. Here is an example of creating a JavaFX `ToolBar` instance:

ToolBar toolBar = new ToolBar();

That is all it takes to create a JavaFX `ToolBar`.

### Adding Items to a ToolBar ###

Once a JavaFX `ToolBar` has been created, you can add items (JavaFX components) to it. You add items to a `ToolBar` by obtaining its collection of items and adding the new item to that collection. Here is an example of adding an item to a `ToolBar`:

Button button = new Button("Click Me");
    
    toolBar.getItems().add(button);

### Adding a ToolBar to the Scene Graph ###

In order to make a JavaFX `ToolBar` visible, it must be added to the JavaFX scene graph. Here is a full example that shows the creation of a JavaFX `ToolBar` and adding it to the JavaFX scene graph:

package com.jenkov.javafx;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.*;
    import javafx.scene.layout.VBox;
    import javafx.stage.Stage;
    
    public class ToolBarExample extends Application {
        public static void main(String[] args) {
            launch(args);
        }
    
        @Override
        public void start(Stage primaryStage) {
            primaryStage.setTitle("JavaFX App");
    
            ToolBar toolBar = new ToolBar();
    
            Button button1 = new Button("Button 1");
            toolBar.getItems().add(button1);
    
            Button button2 = new Button("Button 2");
            toolBar.getItems().add(button2);
    
            VBox vBox = new VBox(toolBar);
    
            Scene scene = new Scene(vBox, 960, 600);
    
            primaryStage.setScene(scene);
            primaryStage.show();
        }
    
    }

The JavaFX GUI resulting from this ToolBar example would look similar to this:

![6d2222a02d294021a3cb86db9fbeee60.png][]

### Vertical Oriented ToolBar ###

By default a JavaFX `ToolBar` displays the items added to it in a horizontal row. It is possible to get the `ToolBar` to display the items vertically instead, so the `ToolBar` becomes a vertical toolbar. To make the `ToolBar` display its items vertically, you call its `setOrientation()` method. Here is an example of setting the orientation of a `ToolBar` to vertical:

toolBar.setOrientation(Orientation.VERTICAL);

Here is a screenshot of how the JavaFX `ToolBar` from the previous section looks in vertical orientation:

![1ec3c7ed73f94ca9bc027936c521542d.png][]

### Separating Items in a ToolBar ###

You can add a visual separator to a JavaFX `ToolBar`. The visual separator is typically displayed as a vertical or horizontal line between the items in the `ToolBar`. Here is an example of adding a separator to a ToolBar:

Button button1 = new Button("Button 1");
    toolBar.getItems().add(button1);
    
    toolBar.getItems().add(new Separator());
    
    Button button2 = new Button("Button 2");
    toolBar.getItems().add(button2);

Here is a screenshot of how a visual separator between items in a ToolBar looks:

![a54bb67d8dcc4aad978d72d662be6ce6.png][]

[6d2222a02d294021a3cb86db9fbeee60.png]: https://img-blog.csdnimg.cn/6d2222a02d294021a3cb86db9fbeee60.png
[1ec3c7ed73f94ca9bc027936c521542d.png]: https://img-blog.csdnimg.cn/1ec3c7ed73f94ca9bc027936c521542d.png
[a54bb67d8dcc4aad978d72d662be6ce6.png]: https://img-blog.csdnimg.cn/a54bb67d8dcc4aad978d72d662be6ce6.png