/*** 程序入口* @author Light*/
public class JavaFXTest extends Application {@Overridepublic void start(Stage stage) {stage.initStyle(StageStyle.TRANSPARENT);VBox root = new VBox();root.setId("root");// 引入样式root.getStylesheets().add(JavaFXTest.class.getResource("/resources/style.css").toString());//顶部VBox top = new VBox();top.setId("top");top.setPrefSize(300,26);// 标题栏AnchorPane title = new AnchorPane();Label close = new Label();close.setPrefWidth(33);close.setPrefHeight(26);close.setId("winClose");//winClose css样式Id
        title.getChildren().add(close);AnchorPane.setRightAnchor(close, 0.0);AnchorPane.setTopAnchor(close, 5.0);top.getChildren().add(title);// 内容VBox content = new VBox();content.setPrefWidth(300);content.setMinHeight(200);// 组装
        root.getChildren().addAll(top, content);Scene scene = new Scene(root);        stage.setScene(scene);// 拖动监听器
        DragUtil.addDragListener(stage, top);// 添加窗体拉伸效果
        DrawUtil.addDrawFunc(stage, root);// 显示
        stage.show();}/*** @param args the command line arguments*/public static void main(String[] args) {launch(args);}}

/*** 拉伸工具类* @author Light*/
public class DrawUtil {//窗体拉伸属性private static boolean isRight;// 是否处于右边界调整窗口状态private static boolean isBottomRight;// 是否处于右下角调整窗口状态private static boolean isBottom;// 是否处于下边界调整窗口状态private final static int RESIZE_WIDTH = 5;// 判定是否为调整窗口状态的范围与边界距离private final static double MIN_WIDTH = 300;// 窗口最小宽度private final static double MIN_HEIGHT = 250;// 窗口最小高度public static void addDrawFunc(Stage stage,VBox root) {

root.setOnMouseMoved((MouseEvent event) -> {event.consume();double x = event.getSceneX();double y = event.getSceneY();double width = stage.getWidth();double height = stage.getHeight();Cursor cursorType = Cursor.DEFAULT;// 鼠标光标初始为默认类型，若未进入调整窗口状态，保持默认类型// 先将所有调整窗口状态重置isRight = isBottomRight = isBottom = false;if (y >= height - RESIZE_WIDTH) {if (x <= RESIZE_WIDTH) {// 左下角调整窗口状态
} else if (x >= width - RESIZE_WIDTH) {// 右下角调整窗口状态isBottomRight = true;cursorType = Cursor.SE_RESIZE;} else {// 下边界调整窗口状态isBottom = true;cursorType = Cursor.S_RESIZE;}} else if (x >= width - RESIZE_WIDTH) {// 右边界调整窗口状态isRight = true;cursorType = Cursor.E_RESIZE;}// 最后改变鼠标光标
            root.setCursor(cursorType);});root.setOnMouseDragged((MouseEvent event) -> {double x = event.getSceneX();double y = event.getSceneY();// 保存窗口改变后的x、y坐标和宽度、高度，用于预判是否会小于最小宽度、最小高度double nextX = stage.getX();double nextY = stage.getY();double nextWidth = stage.getWidth();double nextHeight = stage.getHeight();if (isRight || isBottomRight) {// 所有右边调整窗口状态nextWidth = x;}if (isBottomRight || isBottom) {// 所有下边调整窗口状态nextHeight = y;}if (nextWidth <= MIN_WIDTH) {// 如果窗口改变后的宽度小于最小宽度，则宽度调整到最小宽度nextWidth = MIN_WIDTH;}if (nextHeight <= MIN_HEIGHT) {// 如果窗口改变后的高度小于最小高度，则高度调整到最小高度nextHeight = MIN_HEIGHT;}// 最后统一改变窗口的x、y坐标和宽度、高度，可以防止刷新频繁出现的屏闪情况
            stage.setX(nextX);stage.setY(nextY);stage.setWidth(nextWidth);stage.setHeight(nextHeight);});}
}