java - 双击时调整 JavaFX 选项卡的大小

Question

我有一个带有 JavaFX 选项卡的简单示例:

    public class test extends Application
{

    private BorderPane root;

    // Navigation Utilization
    private ActionTabs actiontabs;

    @Override
    public void start(Stage primaryStage)
    {

        // Set Main Window Label
        primaryStage.setTitle("Desktop Client");
        Image iv = new Image(getClass().getResource("/images/internet-icon.png").toExternalForm());
        primaryStage.getIcons().add(iv);

        root = new BorderPane();
        root.setLeft(getLeftHBox(primaryStage, root));
        Scene scene = new Scene(root, 1000, 1000, Color.WHITESMOKE);  // Set main Stage color

        primaryStage.setScene(scene);

        Rectangle2D primaryScreenBounds = Screen.getPrimary().getVisualBounds();

        // Set Stage boundaries to visible bounds of the main screen
        primaryStage.setX(primaryScreenBounds.getMinX());
        primaryStage.setY(primaryScreenBounds.getMinY());
        primaryStage.setWidth(primaryScreenBounds.getWidth());  // Maximum width of the display
        primaryStage.setHeight(primaryScreenBounds.getHeight());    // Maximum height of the display
        primaryStage.show();

    }

    public static void main(String[] args)
    {
        launch(args);
    }

    private HBox getLeftHBox(Stage primaryStage, BorderPane root)
    {
        HBox hbox = new HBox();

        TabPane tabPane = new TabPane();
        BorderPane mainPane = new BorderPane();

        tabPane.setStyle("-fx-font-size: 12pt;"); // Set global size for the font
        // Create Tabs
        Tab tabA = new Tab();
        tabA.setText("Main Component");
        tabA.setStyle("-fx-font-size: 12pt;"); // Set size of the tab name
        tabA.setClosable(false); 
        // Add something in Tab
        StackPane tabA_stack = new StackPane();
        tabA_stack.setAlignment(Pos.CENTER);
        tabA_stack.getChildren().add(new Label("Label@Tab A"));
        tabA.setContent(tabA_stack);
        tabPane.getTabs().add(tabA);

        Tab tabB = new Tab();
        tabB.setText("Second Component");
        tabB.setStyle("-fx-font-size: 12pt;"); // Set size of the tab name
        tabB.setClosable(false); 
        // Add something in Tab
        StackPane tabB_stack = new StackPane();
        tabB_stack.setAlignment(Pos.CENTER);
        tabB_stack.getChildren().add(new Label("Label@Tab B"));
        tabB.setContent(tabB_stack);
        tabPane.getTabs().add(tabB);

        Tab tabC = new Tab();
        tabC.setText("Last Component");
        tabC.setStyle("-fx-font-size: 12pt;"); // Set size of the tab name
        tabC.setClosable(false); // da se mahne opciqta da se zatvarq tab
        // Add something in Tab
        StackPane tabC_vBox = new StackPane();
        tabC_vBox.setAlignment(Pos.CENTER);
        tabC_vBox.getChildren().add(new Label("Label@Tab C"));
        tabC.setContent(tabC_vBox);
        tabPane.getTabs().add(tabC);

        mainPane.setCenter(tabPane);

        mainPane.setPrefSize(300, 500);
        //mainPane.setLayoutX(5);     // Horizontal Position
        mainPane.setLayoutY(32);    // Vertical Position

        hbox.getChildren().addAll(mainPane);

        return hbox;
    }


}

我希望当我双击选项卡名称时最大化选项卡主体的大小，并使其与应用程序的大小相同的宽度和高度。例如类似于 Eclipse IDE 选项卡。 JavaFX 这可能吗？

编辑

这是我测试过的代码。

public BorderPane initNavigation(Stage primaryStage)
    {

        VBox stackedTitledPanes = createStackedTitledPanes();

        ScrollPane scroll = makeScrollable(stackedTitledPanes);

        final TabPane tabPane = new TabPane();
        final BorderPane mainPane = new BorderPane();

        final Rectangle2D primaryScreenBounds = Screen.getPrimary().getVisualBounds();

        tabPane.setStyle("-fx-font-size: 12pt;"); // Set global size for the font
        // Create Tabs
        Tab tabA = new Tab();

        tabPane.setOnMouseClicked(new EventHandler<MouseEvent>()
        {
            private double sizeX, sizeY;
            private boolean first = true;

            @Override
            public void handle(MouseEvent me)
            {
                if (first)
                {
                    sizeX = mainPane.getWidth();
                    sizeY = mainPane.getHeight();
                    first = false;
                }

                if (me.getButton().equals(MouseButton.PRIMARY) && me.getClickCount() % 2 == 0)
                {
                    if (sizeX != mainPane.getWidth() || sizeY != mainPane.getHeight())
                    {
                        mainPane.setPrefSize(sizeX, sizeY);

                    }
                    else
                    {
                        mainPane.setPrefSize(primaryScreenBounds.getWidth(), primaryScreenBounds.getHeight());
                        //mainPane.toFront();
                    }
                }
            }
        });

        tabA.setText("Main Component");
        tabA.setContextMenu(makeTabContextMenu(tabA, tabPane));  // Set right mouse click menu
        // Add something in Tab
        StackPane tabA_stack = new StackPane();
        tabA_stack.setAlignment(Pos.CENTER);
        tabA_stack.getChildren().add(scroll);
        tabA.setContent(tabA_stack);
        tabPane.getTabs().add(tabA);

        Tab tabB = new Tab();
        tabB.setText("Second Component");
        tabB.setContextMenu(makeTabContextMenu(tabB, tabPane));  // Set right mouse click menu
        // Add something in Tab
        StackPane tabB_stack = new StackPane();
        tabB_stack.setAlignment(Pos.CENTER);
        tabB_stack.getChildren().add(new Label("Label@Tab B"));
        tabB.setContent(tabB_stack);
        tabPane.getTabs().add(tabB);

        Tab tabC = new Tab();
        tabC.setText("Last Component");
        tabC.setContextMenu(makeTabContextMenu(tabC, tabPane));  // Set right mouse click menu
        // Add something in Tab
        StackPane tabC_vBox = new StackPane();
        tabC_vBox.setAlignment(Pos.CENTER);
        tabC_vBox.getChildren().add(new Label("Label@Tab C"));
        tabC.setContent(tabC_vBox);
        tabPane.getTabs().add(tabC);

        mainPane.setCenter(tabPane);
        mainPane.setPrefSize(300, 500);
        //mainPane.setLayoutX(5);     // Horizontal Position
        mainPane.setLayoutY(32);    // Vertical Position

        scroll.setPrefSize(395, 580);
        scroll.setLayoutX(5);
        scroll.setLayoutY(32);

        return mainPane;
    }

问题是当我双击标签名称时，如何用标签代码覆盖舞台？

Answer 1

您需要在代码中添加几行，这里有一个示例，

.....

Tab tabA = new Tab();

Label tabALabel = new Label("Main Component");
tabA.setGraphic(tabALabel);

tabALabel.setOnMouseClicked(new EventHandler<MouseEvent>() {
    @Override
    public void handle(MouseEvent mouseEvent) {
        if (mouseEvent.getButton().equals(MouseButton.PRIMARY)) {
            if (mouseEvent.getClickCount() == 2) {

                mainPane.setPrefSize(500, 500); //Your required size

            }
       }
    }
});

....

试试这个，看看有没有困难。