我在代码中创建了一个新舞台,并且需要,舞台没有装饰!在这种情况下,新创建的Stage会丢失Drag-Function。
我创建了以下代码,现在我可以拖动舞台,但处理不正确,并且舞台跟随鼠标不正确。
我希望你能告诉我我的错误并解决我的错误。
感谢您的帮助。
示例 - 代码:
import javafx.application.Application;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Point2D;
import javafx.scene.Cursor;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.MenuBar;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class DragStuff extends Application{
VBox mainContainer;
Stage mainSt;
@Override
public void start(Stage mainStage) throws Exception {
// TODO Auto-generated method stub
mainStage.initStyle(StageStyle.UNDECORATED);
mainSt = mainStage;
mainContainer = new VBox();
mainContainer.setStyle("-fx-background-color:red");
Label headlineInformation = new Label("Testing");
headlineInformation.getStyleClass().addAll("popup-label-name");
headlineInformation.setMaxWidth(Double.MAX_VALUE);
Button closeButton = new Button("X");
closeButton.setVisible(true);
closeButton.getStyleClass().addAll("popup-button",
"popup-button-color");
HBox headContainer = new HBox();
HBox.setHgrow(headlineInformation, Priority.ALWAYS);
headContainer.setPadding(new Insets(5, 5, 5, 5));
headContainer.getChildren().addAll(headlineInformation, closeButton);
Pane pane = new Pane();
pane.getChildren().addAll(new Label("Text Stuff"));
mainContainer.getChildren().addAll(headContainer,pane);
Scene sc = new Scene(mainContainer);
mainStage.setScene(sc);
mainStage.show();
dragHandling();
}
public void dragHandling()
{
final ObjectProperty<Point2D> mouseKoordinates = new SimpleObjectProperty<>();
mainContainer.setOnMousePressed(new EventHandler<MouseEvent>()
{
@Override
public void handle(MouseEvent event)
{
mouseKoordinates.set(new Point2D(event.getSceneX(), event.getSceneY()));
mainContainer.getScene().setCursor(Cursor.HAND);
};
});
mainContainer.setOnMouseReleased(new EventHandler<MouseEvent>()
{
@Override
public void handle(final MouseEvent arg0)
{
mouseKoordinates.set(null);
mainContainer.getScene().setCursor(Cursor.DEFAULT);
}
});
mainContainer.setOnMouseDragged(new EventHandler<MouseEvent>()
{
@Override
public void handle(MouseEvent event)
{
if (mouseKoordinates.get() != null)
{
double x = event.getScreenX();
double deltaX = x - mouseKoordinates.get().getX();
double y = event.getScreenY();
double deltaY = y - mouseKoordinates.get().getY();
mainSt.setX(mainSt.getX() + deltaX);
mainSt.setY(mainSt.getY() + deltaY);
mouseKoordinates.set(new Point2D(x, y));
}
}
});
}
public static void main(String[] args) {
launch(args);
}
}
答案 0 :(得分:1)
您不得在代码中使用getScreenX()
和getScreenY()
,因为它们会返回绝对位置。代替他们尝试使用getX()
和getY()
。
此外,我不明白为什么你也使用mouseKoordinates.set(new Point2D(x, y));
。
尝试使用以下代码
mainContainer.setOnMouseDragged(new EventHandler<MouseEvent>()
{
@Override
public void handle(MouseEvent event)
{
if (mouseKoordinates.get() != null)
{
double x = event.getX();
double deltaX = x - mouseKoordinates.get().getX();
double y = event.getY();
double deltaY = y - mouseKoordinates.get().getY();
mainSt.setX(mainSt.getX() + deltaX);
mainSt.setY(mainSt.getY() + deltaY);
}
}
});