Question

这是我在这里的第一篇文章 - 请保持友好：）

我要做的是控制/窗口：

属于JavaFX Stage
点击
可以超越拥有舞台的边界

我已经能够以两种方式实现这一点;然而，两者都有缺陷。首先，我在舞台的内容中制作了可拖动的控件;但是，他们不能被拖到舞台区域之外。其次，我创建了它们作为可拖动的Popups锚定到舞台;但是，即使其他窗口移动到拥有舞台之上，它们仍然在一切之上。

我要问的是：有没有办法将控件拖出它拥有舞台的范围之外;或者让Popup并不总是出现在所有内容之上？

我在这里找到了一个类似的问题，解释了Popup在顶部的问题（Javafx popup won't hide behind other application upon losing focus）。但那里没有可接受的解决方案（当舞台或应用程序失去焦点时，我不希望Popup“隐藏”。）

感谢阅读。如果你能提出任何建议，我们将不胜感激。

下面是我尝试使用MoveablePopup的MCV示例。它工作正常，除了你在顶部带来额外的窗口。

package moveablepopuptest;

import javafx.application.Application;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Insets;
import javafx.geometry.Point2D;
import javafx.scene.Cursor;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Popup;
import javafx.stage.Stage;

public class MoveablePopupTest extends Application
{    

    @Override
    public void start(Stage primaryStage)
    {        
        // Set up Primary Stage:
        StackPane root = new StackPane();        
        Scene scene = new Scene(root, 400, 400);        
        primaryStage.setTitle("MoveablePopup Test");
        primaryStage.setScene(scene);
        primaryStage.show();


        // Show a MoveablePopup for an associated node in the Stage:
        MoveablePopup popup = new MoveablePopup();
        popup.setTitle("Extension");
        Pane popupContent = new Pane();
        popupContent.setBackground(new Background(new BackgroundFill(Color.WHITE, CornerRadii.EMPTY, Insets.EMPTY)));
        popupContent.setMinSize(200, 200);
        popup.setContent(popupContent);
        popup.show(root, 0, 0);        

        // When Primary Stage is moved, re-anchor the popup:
        ChangeListener<Number> windowMoveListener = (ObservableValue<? extends Number> observable, Number oldValue, Number newValue) ->
        {
             popup.anchorToOwner();
        };       
        primaryStage.xProperty().addListener(windowMoveListener);
        primaryStage.yProperty().addListener(windowMoveListener);
    }

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

    public class MoveablePopup extends Popup
    {    
        private final BorderPane bgPane = new BorderPane(); 
        private final DoubleProperty ownerXAnchorProperty = new SimpleDoubleProperty(0);
        private final DoubleProperty ownerYAnchorProperty = new SimpleDoubleProperty(0);        
        private final Label titleLabel = new Label("Title");
        private Point2D lastMouse = null;      
        private Node content = null;

        public MoveablePopup()    
        {   
            // Don't want Esc to close the Popup:
            setHideOnEscape(false);

            // Create a border:
            bgPane.setBorder(new Border(new BorderStroke(Color.DARKORANGE, BorderStrokeStyle.SOLID, CornerRadii.EMPTY, new BorderWidths(2))));

            // Create a title bar for the top, which will also function as a handle to move the Popup:
            StackPane barPane = new StackPane();  
            titleLabel.setTextFill(Color.WHITE);
            barPane.getChildren().add(titleLabel);            
            barPane.setCursor(Cursor.MOVE);
            barPane.setBackground(new Background(new BackgroundFill(Color.DARKORANGE, CornerRadii.EMPTY, Insets.EMPTY)));
            barPane.setMaxSize(Double.MAX_VALUE, 24);
            bgPane.setTop(barPane);                         

            // Add drag/anchoring functionality to the Popup
            barPane.setOnMousePressed((MouseEvent event) ->
            {
                lastMouse = new Point2D(event.getScreenX(), event.getScreenY());
            });
            barPane.setOnMouseDragged((MouseEvent event) ->
            {
                double moveX = event.getScreenX() - lastMouse.getX();
                double moveY = event.getScreenY() - lastMouse.getY();
                ownerXAnchorProperty.set(ownerXAnchorProperty.doubleValue()+moveX);
                ownerYAnchorProperty.set(ownerYAnchorProperty.doubleValue()+moveY);
                lastMouse = new Point2D(event.getScreenX(), event.getScreenY());
                anchorToOwner();
            });
            getContent().add(bgPane);        

        }

        @Override
        protected void show()
        {
            super.show();
            anchorToOwner();
        }

        public void setContent(Node content)
        {
            this.content = content;
            bgPane.setCenter(content);
        }

        public void setTitle(String title)
        {
            titleLabel.setText(title);
        }

        // Repositions the MoveablePopup so that it's relationship to
        // the owning Node's location is maintained:
        public final void anchorToOwner()
        {
            if (getOwnerNode() != null)
            {
                Point2D screenPoint = getOwnerNode().localToScreen(0, 0);
                setX(screenPoint.getX() + ownerXAnchorProperty.doubleValue());
                setY(screenPoint.getY() + ownerYAnchorProperty.doubleValue());
            }
        }

    }   
}

Answer 1

创建一个新的舞台，它将是'popup'：

Stage childStage = new Stage();

childStage.initModality(Modality.WINDOW_MODAL);
childStage.setTitle("Title of popup");

childStage.setScene(YOUR_SCENE);
childStage.sizeToScene();
childStage.setResizable(false);

childStage.show();

Answer 2

正如你已经发现的那样，舞台上发生的一切都停留在舞台之内（请原谅双关语）。因此，如果您需要在舞台外显示某些内容，我们可以排除除Stage之外的所有内容。您可以创建一个新阶段并为所有者分配初始阶段。 Stage，作为原生窗口的代表，将专注于点击。但是，有可能here回到初始阶段。这应该勾选你的需求框。

我不确定您要尝试实现的用例，但request focus提供了对现有JavaFX API的一些扩展，包括通知和JFXtras窗口。看看这对你有什么帮助。

使用Popup扩展JavaFX Stage内容（？）

2 个答案: