代码之家 › 专栏 › 技术社区 › Woton Sampaio

设置“快速”点击-JavaFx

onclicklistener onclick javafx

-1

Woton Sampaio · 技术社区 · 7 年前

按钮当点击它时,我可以从屏幕上移动它。问题是,当我拖放时,当我释放鼠标时,会调用单击事件,我尝试了:

setOnMouseClicked setOnAction setOnMousePressed

setOnLongClick

前任:

要移动,请执行以下操作:

button.setOnMouseDragged(e -> {
     //code move
});

button.setOnMouseClicked/ Action / MousePressed (e -> {
    //call method
});

但是当我放下它时,它会调用setOnMouseClicked/Action/MousePressed,我想要的是,如果我快速点击,它会调用setOnMouseClicked/Action/MousePressed,当我放下拖放时,不要调用。

1 回复 | 直到 7 年前

1

2

Slaw 7 年前

一种选择是跟踪 Button 被拖走了,;如果不是,则仅在 onAction

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.geometry.Point2D;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.input.MouseEvent;
import javafx.stage.Stage;

public class Main extends Application {

  private Point2D origin;
  private boolean wasDragged;

  @Override
  public void start(Stage primaryStage) {
    Button button = new Button("Drag me!");
    button.setOnAction(this::onAction);
    button.setOnMousePressed(this::onMousePressed);
    button.setOnMouseDragged(this::onMouseDragged);
    button.setOnMouseReleased(this::onMouseReleased);

    primaryStage.setScene(new Scene(new Group(button), 800, 600));
    primaryStage.show();
  }

  private void onAction(ActionEvent event) {
    event.consume();

    if (!wasDragged) {
      System.out.println("onAction");
    }
  }

  private void onMousePressed(MouseEvent event) {
    event.consume();
    origin = new Point2D(event.getX(), event.getY());

    System.out.println("onMousePressed");
  }

  private void onMouseDragged(MouseEvent event) {
    event.consume();
    wasDragged = true;

    Button source = (Button) event.getSource();
    source.setTranslateX(source.getTranslateX() + event.getX() - origin.getX());
    source.setTranslateY(source.getTranslateY() + event.getY() - origin.getY());
  }

  private void onMouseReleased(MouseEvent event) {
    event.consume();
    origin = null;
    wasDragged = false;

    System.out.println("onMouseReleased");
    System.out.println();
  }

}

不幸的是,我找不到保证处理程序总是在 onMouseReleased 处理程序,但当我尝试它时,它在Java8U202和JavaFX11.0.2上都起作用。