摘要：中獲取并自定義窗口移動(dòng)與縮放邏輯由于去掉了平臺(tái)自帶了標(biāo)題欄，窗口就無(wú)法移動(dòng)和縮放了，需要我們自己來(lái)實(shí)現(xiàn)。

由于去掉了平臺(tái)自帶了標(biāo)題欄，窗口就無(wú)法移動(dòng)和縮放了，需要我們自己來(lái)實(shí)現(xiàn)。

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("main.fxml"));
        primaryStage.setTitle("main");
        // 主要是這一句
        primaryStage.initStyle(StageStyle.TRANSPARENT);
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }


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

首先確定在Controller中獲取到你的跟布局對(duì)象，如下：

public class Controller implements Initializable {
    public BorderPane root;
    private Stage stage;
}

然后可以在public void initialize(URL url, ResourceBundle resourceBundle) 方法內(nèi)獲取Stage

public class Controller implements Initializable {
    public BorderPane root;
    private Stage stage;

    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
       var stage = getStage();
    }

    private Stage getStage() {
        if (stage == null) {
            stage = (Stage) root.getScene().getWindow();
        }
        return stage;
    }

}

記錄鼠標(biāo)坐標(biāo)

 root.setOnMousePressed(event -> {
            event.consume();
            xOffset = event.getSceneX();
            yOffset = event.getSceneY();
        });

自定義移動(dòng)控制區(qū)域

dragArea.setOnMouseDragged(event -> {
            event.consume();
            var stage = getStage();
            stage.setX(event.getScreenX() - xOffset);
            stage.setY(event.getScreenY() - yOffset);
        });

判斷鼠標(biāo)坐標(biāo)位置，并處理光標(biāo)變換

root.setOnMouseMoved(this::mouseMoveHandle);

 private void mouseMoveHandle(MouseEvent event) {
        event.consume();
        double x = event.getSceneX();
        double y = event.getSceneY();
        var stage = getStage();
        double width = stage.getWidth();
        double height = stage.getHeight();
        Cursor cursorType = Cursor.DEFAULT;
        bit = 0;
        if (y >= height - RESIZE_WIDTH) {
            if (x <= RESIZE_WIDTH) {
                bit |= 1 << 3;
            } else if (x >= width - RESIZE_WIDTH) {
                bit |= 1;
                bit |= 1 << 2;
                cursorType = Cursor.SE_RESIZE;
            } else {
                bit |= 1;
                cursorType = Cursor.S_RESIZE;
            }
        } else if (x >= width - RESIZE_WIDTH) {
            bit |= 1 << 2;
            cursorType = Cursor.E_RESIZE;
        }
        root.setCursor(cursorType);
    }

處理窗口縮放

root.setOnMouseDragged(this::mouseDraggedHandle);

private void mouseDraggedHandle(MouseEvent event) {
    event.consume();
    var primaryStage = getStage();
    double x = event.getSceneX();
    double y = event.getSceneY();
    double nextX = primaryStage.getX();
    double nextY = primaryStage.getY();
    double nextWidth = primaryStage.getWidth();
    double nextHeight = primaryStage.getHeight();
    if ((bit & 1 << 2) != 0) {
        nextWidth = x;
    }
    if ((bit & 1) != 0) {
        nextHeight = y;
    }
    if (nextWidth <= MIN_WIDTH) {
        nextWidth = MIN_WIDTH;
    }
    if (nextHeight <= MIN_HEIGHT) {
        nextHeight = MIN_HEIGHT;
    }
    primaryStage.setX(nextX);
    primaryStage.setY(nextY);
    primaryStage.setWidth(nextWidth);
    primaryStage.setHeight(nextHeight);
}

package line.main;

import javafx.fxml.Initializable;
import javafx.scene.Cursor;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

import java.net.URL;
import java.util.ResourceBundle;

public class Controller implements Initializable {
    public BorderPane root;
    public Pane dragArea;
    private Stage stage;
    private double xOffset = 0;
    private double yOffset = 0;
    private int bit = 0;//left,right,top,bottom
    private static final double RESIZE_WIDTH = 5.00;
    private static final double MIN_WIDTH = 600.00;
    private static final double MIN_HEIGHT = 400.00;

    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
        dragArea.setOnMouseDragged(event -> {
            event.consume();
            var stage = getStage();
            stage.setX(event.getScreenX() - xOffset);
            stage.setY(event.getScreenY() - yOffset);
        });
        root.setOnMousePressed(event -> {
            event.consume();
            xOffset = event.getSceneX();
            yOffset = event.getSceneY();
        });
        root.setOnMouseMoved(this::mouseMoveHandle);
        root.setOnMouseDragged(this::mouseDraggedHandle);
    }

    private Stage getStage() {
        if (stage == null) {
            stage = (Stage) root.getScene().getWindow();
        }
        return stage;
    }

    private void mouseMoveHandle(MouseEvent event) {
        event.consume();
        double x = event.getSceneX();
        double y = event.getSceneY();
        var stage = getStage();
        double width = stage.getWidth();
        double height = stage.getHeight();
        Cursor cursorType = Cursor.DEFAULT;
        bit = 0;
        if (y >= height - RESIZE_WIDTH) {
            if (x <= RESIZE_WIDTH) {
                bit |= 1 << 3;
            } else if (x >= width - RESIZE_WIDTH) {
                bit |= 1;
                bit |= 1 << 2;
                cursorType = Cursor.SE_RESIZE;
            } else {
                bit |= 1;
                cursorType = Cursor.S_RESIZE;
            }
        } else if (x >= width - RESIZE_WIDTH) {
            bit |= 1 << 2;
            cursorType = Cursor.E_RESIZE;
        }
        root.setCursor(cursorType);
    }

    private void mouseDraggedHandle(MouseEvent event) {
        event.consume();
        var primaryStage = getStage();
        double x = event.getSceneX();
        double y = event.getSceneY();
        double nextX = primaryStage.getX();
        double nextY = primaryStage.getY();
        double nextWidth = primaryStage.getWidth();
        double nextHeight = primaryStage.getHeight();
        if ((bit & 1 << 2) != 0) {
            nextWidth = x;
        }
        if ((bit & 1) != 0) {
            nextHeight = y;
        }
        if (nextWidth <= MIN_WIDTH) {
            nextWidth = MIN_WIDTH;
        }
        if (nextHeight <= MIN_HEIGHT) {
            nextHeight = MIN_HEIGHT;
        }
        primaryStage.setX(nextX);
        primaryStage.setY(nextY);
        primaryStage.setWidth(nextWidth);
        primaryStage.setHeight(nextHeight);
    }
}