我有一个父母VBox，它有一个菜单按钮和一个可拖动的HBox。当我拖动HBox时，菜单按钮没有响应（因为HBox设置在菜单按钮上）。如果可以拖动，我如何在HBox顶部设置菜单按钮？
HBoxandVBoxExampleupdated.java：
import DraggableNode;
import javafx.scene.chart.NumberAxis;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.CheckMenuItem;
import javafx.scene.control.Label;
import javafx.scene.control.MenuButton;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class HBoxandVBoxExampleupdated extends Application
{
static Pane pane = new Pane();
static DraggableNode node = new DraggableNode();
static NumberAxis noaxis = new NumberAxis();
static String ref = "HHHHHelllelelelellelellelelellelelelaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
static HBox nobox = new HBox();
static NumberAxis lineXAxis;
static String Style = "-fx-border-color: blue;\n"
+ "-fx-border-insets: 5;\n"
+ "-fx-border-width: 3;\n"
+ "-fx-border-style: dashed;\n";
static String Style1 = "-fx-border-color: red;\n"
+ "-fx-border-insets: 5;\n"
+ "-fx-border-width: 3;\n"
+ "-fx-border-style: dashed;\n";
@Override
public void start(Stage primaryStage) throws Exception
{
pane.setStyle(Style);
node.setStyle(Style1);
VBox mainbox = new VBox(80);
mainbox.setAlignment(Pos.CENTER);
mainbox.setPadding(new Insets(50, 30, 100, 50));
VBox hbox = new VBox(60);
hbox.setAlignment(Pos.CENTER); // default TOP_LEFT
HBox vbox1 = new HBox();
HBox vbox2 = new HBox(10);
HBox vbox3 = new HBox(20);
Button close = new Button("X");
Button close1 = new Button("X");
MenuButton vcfmenu = new MenuButton("Vcf");
vcfmenu.getItems().add(new CheckMenuItem("About This Track"));
vcfmenu.getItems().add(new CheckMenuItem("Ping To Tap"));
vcfmenu.getItems().add(new CheckMenuItem("Edit Config"));
vcfmenu.getItems().add(new CheckMenuItem("Delete Track"));
vcfmenu.getItems().add(new CheckMenuItem("Save Track Data"));
vcfmenu.getItems().add(new CheckMenuItem("Show Labels"));
vcfmenu.getItems().add(new CheckMenuItem("Hides Sites Passing All Filters"));
vcfmenu.getItems().add(new CheckMenuItem("Hides Sites not Passing All Filters"));
vbox2.getChildren().add(vcfmenu);
for (String s : ref.split("")) {
Label l = new Label(s);
l.setBorder(new Border(
new BorderStroke(Color.BLACK, BorderStrokeStyle.SOLID, CornerRadii.EMPTY, BorderWidths.DEFAULT)));
l.setBackground(
new Background(
new BackgroundFill(
(s.equals("N") ? Color.web("#DDDDDD")
: (s.equals("A") ? Color.web("#00BF00")
: (s.equals("C") ? Color.web("#0099FF")
: (s.equals("T") ? Color.web("#F00")
: Color.web("#D5BB04"))))),
CornerRadii.EMPTY, Insets.EMPTY)));
l.setAlignment(Pos.CENTER);
l.setPadding(new Insets(1, 4, 1, 4));
vbox1.getChildren().add(l);
}
lineXAxis = new NumberAxis(1, ref.length(), 4);
nobox.getChildren().add(lineXAxis);
nobox.setHgrow(lineXAxis, Priority.ALWAYS);
mainbox.getChildren().addAll(vbox2);
hbox.getChildren().addAll(nobox, vbox1);
node.getChildren().add(hbox);
pane.getChildren().addAll(node, mainbox);
Scene scene = new Scene(pane, 1150, 250);
primaryStage.setTitle("HBox and VBox Example");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args)
{
Application.launch(args);
}
}
DraggableNode.java：
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.Node;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
public class DraggableNode extends StackPane {
private double x = 0;
private double y = 0;
private double mousex = 0;
private double mousey = 0;
private Node view;
private boolean dragging = false;
private boolean moveToFront = true;
private double size = 0;
private double newSize = 0;
public DraggableNode() {
init();
}
public DraggableNode(Node view) {
this.view = view;
getChildren().add(view);
setMouseTransparent(true);
init();
}
private void init() {
onMousePressedProperty().set(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
getScene().setCursor(Cursor.HAND);
// record the current mouse X and Y position on Node
mousex = event.getSceneX();
mousey = event.getSceneY();
x = getLayoutX();
y = getLayoutY();
if (isMoveToFront()) {
toFront();
}
}
});
onMouseDraggedProperty().set(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
double offsetX = event.getSceneX() - mousex;
x += offsetX;
double scaledX = x;
System.out.println(" : " + scaledX);
if (scaledX > 0)
{
return;
}
setLayoutX(scaledX);
dragging = false;
mousex = event.getSceneX();
event.consume();
}
});
onMouseClickedProperty().set(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
dragging = false;
}
});
}
/**
* @return the dragging
*/
protected boolean isDragging() {
return dragging;
}
/**
* @return the view
*/
public Node getView() {
return view;
}
/**
* @param moveToFront
* the moveToFront to set
*/
public void setMoveToFront(boolean moveToFront) {
this.moveToFront = moveToFront;
}
/**
* @return the moveToFront
*/
public boolean isMoveToFront() {
return moveToFront;
}
public void removeNode(Node n) {
getChildren().remove(n);
}
}
答案 0 :(得分：0)
您将DraggableNode设置为onMousePressedProperty的EventHandler中的前端。这会将DraggableNode置于其兄弟节点之上，并阻止菜单按钮接收鼠标输入。
为了防止这种情况，我看到两个选项：
moveToFront = false将DraggableNode设置为前面，或者，如果不可能，通过添加
拖动后再次将DraggableNode设置为后面onMouseReleasedProperty().set(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
toBack();
}
});
到DraggableNode的init方法。
对于更通用的解决方案，您可以向DraggableNode
添加属性private BooleanProperty dragInProcessProperty = new SimpleBooleanProperty(false);
public BooleanProperty dragInProcessProperty() {
return this.dragInProcessProperty;
}
在onMouseDraggedProperty中拖动时将属性设置为true，释放鼠标时将属性设置为false
onMouseReleasedProperty().set(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
dragInProcessProperty.set(false);
}
});
并将ChangeListener添加到HBoxandVBoxExampleupdated中的dragInProgressProperty
node.dragInProcessProperty().addListener(new ChangeListener<Boolean>() {
@Override
public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
if (!newValue.booleanValue()) {
mainbox.toFront();
}
}
});
在拖动完成时将节点设置为前面。