张世豪
6 天以前 5d6d890cfd10466d5d14ff5177adcc888baaa0e4
src/zhuye/Shouye.java
@@ -11,11 +11,16 @@
import java.awt.event.*;
import chuankou.dellmessage;
import chuankou.sendmessage;
import chuankou.SerialPortService;
import dikuai.Dikuai;
import dikuai.Dikuaiguanli;
import dikuai.addzhangaiwu;
import gecaoji.Device;
import gecaoji.Gecaoji;
import gecaoji.MowerBoundaryChecker;
import set.Sets;
import set.debug;
import udpdell.UDPServer;
import zhangaiwu.AddDikuai;
import yaokong.Control04;
@@ -64,7 +69,7 @@
   private JLabel mowerSpeedValueLabel;
   private JLabel mowerSpeedUnitLabel;
   private JLabel mowingProgressLabel;
   private FixQualityIndicator fixQualityIndicator;
   private gpszhuangtai fixQualityIndicator;
   // 导航按钮
   private JButton homeNavBtn;
@@ -75,6 +80,15 @@
   private JLabel statusLabel;
   private JLabel speedLabel;  // 速度显示标签
   private JLabel areaNameLabel;
   // 边界警告相关
   private Timer boundaryWarningTimer;  // 边界警告检查定时器
   private Timer warningBlinkTimer;  // 警告图标闪烁定时器
   private boolean isMowerOutsideBoundary = false;  // 割草机是否在边界外
   private boolean warningIconVisible = true;  // 警告图标显示状态(用于闪烁)
   // 以割草机为中心视图模式
   private boolean centerOnMowerMode = false;  // 是否处于以割草机为中心的模式
   // 当前选中的导航按钮
   private JButton currentNavButton;
@@ -88,10 +102,20 @@
   private Sets settingsDialog;
   private BaseStation baseStation;
   private final Consumer<String> serialLineListener = line -> SwingUtilities.invokeLater(this::updateDataPacketCountLabel);
   // 地图渲染器
   private MapRenderer mapRenderer;
   private final Consumer<String> serialLineListener = line -> {
      SwingUtilities.invokeLater(() -> {
         updateDataPacketCountLabel();
         // 如果收到$GNGGA数据,立即更新拖尾
         if (line != null && line.trim().startsWith("$GNGGA")) {
            if (mapRenderer != null) {
               mapRenderer.forceUpdateIdleMowerTrail();
            }
         }
      });
   };
   private static final int FLOAT_ICON_SIZE = 32;
   private JButton endDrawingButton;
   private JButton drawingPauseButton;
@@ -194,6 +218,9 @@
      initializeDefaultAreaSelection();
      refreshMapForSelectedArea();
      // 启动边界警告检查定时器
      startBoundaryWarningTimer();
   }
   private void scheduleIdentifierCheck() {
@@ -205,12 +232,200 @@
               SwingUtilities.invokeLater(() -> {
                  Shouye.this.checkIdentifiersAndPromptIfNeeded();
                  Shouye.this.showInitialMowerSelfCheckDialogIfNeeded();
                  // 设置窗口关闭监听器,在关闭时保存缩放比例
                  setupWindowCloseListener();
               });
            }
         }
      };
      addHierarchyListener(listener);
   }
   /**
    * 设置窗口关闭监听器,在窗口关闭时保存当前缩放比例
    */
   private void setupWindowCloseListener() {
      Window window = SwingUtilities.getWindowAncestor(this);
      if (window != null && window instanceof JFrame) {
         JFrame frame = (JFrame) window;
         frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
               // 保存当前缩放比例
               saveCurrentScale();
               // 停止边界警告定时器
               if (boundaryWarningTimer != null && boundaryWarningTimer.isRunning()) {
                  boundaryWarningTimer.stop();
               }
               // 停止闪烁定时器
               if (warningBlinkTimer != null && warningBlinkTimer.isRunning()) {
                  warningBlinkTimer.stop();
               }
            }
         });
      }
   }
   /**
    * 保存当前地图缩放比例和视图中心坐标到配置文件
    */
   public void saveCurrentScale() {
      if (mapRenderer != null) {
         double currentScale = mapRenderer.getScale();
         double translateX = mapRenderer.getTranslateX();
         double translateY = mapRenderer.getTranslateY();
         Setsys setsys = new Setsys();
         // 保留2位小数
         setsys.updateProperty("mapScale", String.format("%.2f", currentScale));
         setsys.updateProperty("viewCenterX", String.format("%.2f", translateX));
         setsys.updateProperty("viewCenterY", String.format("%.2f", translateY));
      }
   }
   /**
    * 启动边界警告检查定时器
    */
   private void startBoundaryWarningTimer() {
      // 边界检查定时器:每500ms检查一次割草机是否在边界内
      boundaryWarningTimer = new Timer(500, e -> {
         checkMowerBoundaryStatus();
         // 同时更新蓝牙图标状态
         updateBluetoothButtonIcon();
      });
      boundaryWarningTimer.setInitialDelay(0);
      boundaryWarningTimer.start();
      // 闪烁定时器:每1秒切换一次警告图标显示状态
      warningBlinkTimer = new Timer(1000, e -> {
         if (isMowerOutsideBoundary) {
            warningIconVisible = !warningIconVisible;
            if (visualizationPanel != null) {
               visualizationPanel.repaint();
            }
         }
      });
      warningBlinkTimer.setInitialDelay(0);
      warningBlinkTimer.start();
   }
   /**
    * 切换以割草机为中心的模式
    */
   private void toggleCenterOnMowerMode() {
      centerOnMowerMode = !centerOnMowerMode;
      if (centerOnMowerMode) {
         // 开启模式:立即将视图中心移动到割草机位置
         updateViewToCenterOnMower();
      }
      // 关闭模式时不需要做任何操作,用户已经可以自由移动地图
      // 更新图标显示(重绘以切换图标)
      if (visualizationPanel != null) {
         visualizationPanel.repaint();
      }
   }
   /**
    * 更新视图中心到割草机位置
    */
   private void updateViewToCenterOnMower() {
      if (mapRenderer == null) {
         return;
      }
      Gecaoji mower = mapRenderer.getMower();
      if (mower != null && mower.hasValidPosition()) {
         Point2D.Double mowerPosition = mower.getPosition();
         if (mowerPosition != null) {
            // 获取当前缩放比例
            double currentScale = mapRenderer.getScale();
            // 设置视图变换,使割草机位置对应到屏幕中心
            // translateX = -mowerX, translateY = -mowerY 可以让割草机在屏幕中心
            mapRenderer.setViewTransform(currentScale, -mowerPosition.x, -mowerPosition.y);
         }
      }
   }
   /**
    * 检查割草机边界状态
    */
   private void checkMowerBoundaryStatus() {
      // 如果处于以割草机为中心的模式,实时更新视图中心
      if (centerOnMowerMode) {
         updateViewToCenterOnMower();
      }
      // 检查是否在作业中
      if (statusLabel == null || !"作业中".equals(statusLabel.getText())) {
         // 不在作业中,重置状态
         if (isMowerOutsideBoundary) {
            isMowerOutsideBoundary = false;
            warningIconVisible = true;
            if (visualizationPanel != null) {
               visualizationPanel.repaint();
            }
         }
         return;
      }
      // 在作业中,检查是否在边界内
      if (mapRenderer == null) {
         return;
      }
      // 获取当前边界
      List<Point2D.Double> boundary = mapRenderer.getCurrentBoundary();
      if (boundary == null || boundary.size() < 3) {
         // 没有边界,重置状态
         if (isMowerOutsideBoundary) {
            isMowerOutsideBoundary = false;
            warningIconVisible = true;
            if (visualizationPanel != null) {
               visualizationPanel.repaint();
            }
         }
         return;
      }
      // 获取割草机位置
      Gecaoji mower = mapRenderer.getMower();
      if (mower == null || !mower.hasValidPosition()) {
         // 无法获取位置,重置状态
         if (isMowerOutsideBoundary) {
            isMowerOutsideBoundary = false;
            warningIconVisible = true;
            if (visualizationPanel != null) {
               visualizationPanel.repaint();
            }
         }
         return;
      }
      Point2D.Double mowerPosition = mower.getPosition();
      if (mowerPosition == null) {
         return;
      }
      // 使用 MowerBoundaryChecker 检查是否在边界内
      boolean isInside = MowerBoundaryChecker.isInsideBoundaryPoints(
         boundary,
         mowerPosition.x,
         mowerPosition.y
      );
      // 更新状态
      boolean wasOutside = isMowerOutsideBoundary;
      isMowerOutsideBoundary = !isInside;
      // 如果状态改变,立即重绘
      if (wasOutside != isMowerOutsideBoundary) {
         warningIconVisible = true;
         if (visualizationPanel != null) {
            visualizationPanel.repaint();
         }
      }
   }
   private void showInitialMowerSelfCheckDialogIfNeeded() {
      // 已移除进入主页时的自检提示(按用户要求删除)
@@ -237,6 +452,11 @@
         }
      }
      mapRenderer.setIdleTrailDurationSeconds(durationSeconds);
      // 应用边界距离显示设置
      Setsys setsys = new Setsys();
      setsys.initializeFromProperties();
      mapRenderer.setBoundaryLengthVisible(setsys.isBoundaryLengthVisible());
   }
   private void createHeaderPanel() {
@@ -349,6 +569,39 @@
      // 可视化区域 - 使用MapRenderer进行绘制
      visualizationPanel = new JPanel() {
         private ImageIcon gecaojiIcon1 = null;  // 默认图标
         private ImageIcon gecaojiIcon2 = null;  // 以割草机为中心模式图标
         private static final int GECAOJI_ICON_X = 37;
         private static final int GECAOJI_ICON_Y = 10;
         private static final int GECAOJI_ICON_SIZE = 20;
         {
            // 加载割草机图标,大小20x20像素
            gecaojiIcon1 = loadScaledIcon("image/gecaojishijiao1.png", GECAOJI_ICON_SIZE, GECAOJI_ICON_SIZE);
            gecaojiIcon2 = loadScaledIcon("image/gecaojishijiao2.png", GECAOJI_ICON_SIZE, GECAOJI_ICON_SIZE);
         }
         /**
          * 检查鼠标位置是否在割草机图标区域内
          */
         private boolean isMouseOnGecaojiIcon(Point mousePoint) {
            return mousePoint.x >= GECAOJI_ICON_X &&
                   mousePoint.x <= GECAOJI_ICON_X + GECAOJI_ICON_SIZE &&
                   mousePoint.y >= GECAOJI_ICON_Y &&
                   mousePoint.y <= GECAOJI_ICON_Y + GECAOJI_ICON_SIZE;
         }
         @Override
         public String getToolTipText(MouseEvent event) {
            // 如果鼠标在割草机图标区域内,显示提示文字
            if (isMouseOnGecaojiIcon(event.getPoint())) {
               // 根据当前模式显示不同的提示文字
               return centerOnMowerMode ? "取消以割草机为中心" : "以割草机为中心";
            }
            // 不在图标上时返回null,不显示工具提示框
            return null;
         }
         @Override
         protected void paintComponent(Graphics g) {
            super.paintComponent(g);
@@ -356,14 +609,75 @@
            if (mapRenderer != null) {
               mapRenderer.renderMap(g);
            }
            // 检查是否需要显示警告图标
            if (isMowerOutsideBoundary && warningIconVisible) {
               // 绘制红色三角形警告图标(带叹号)
               drawWarningIcon(g, GECAOJI_ICON_X, GECAOJI_ICON_Y, GECAOJI_ICON_SIZE);
            } else {
               // 根据模式选择不同的图标
               ImageIcon iconToDraw = centerOnMowerMode ? gecaojiIcon2 : gecaojiIcon1;
               if (iconToDraw != null) {
                  // 绘制割草机图标
                  // 水平方向与速度指示器对齐(x=37)
                  // 垂直方向与卫星状态图标对齐(y=10,速度指示器面板顶部边距10像素,使图标中心对齐)
                  g.drawImage(iconToDraw.getImage(), GECAOJI_ICON_X, GECAOJI_ICON_Y, null);
               }
            }
         }
         /**
          * 绘制红色三角形警告图标(带叹号)
          */
         private void drawWarningIcon(Graphics g, int x, int y, int size) {
            Graphics2D g2d = (Graphics2D) g.create();
            g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            // 绘制红色三角形
            int[] xPoints = {x + size / 2, x, x + size};
            int[] yPoints = {y, y + size, y + size};
            g2d.setColor(Color.RED);
            g2d.fillPolygon(xPoints, yPoints, 3);
            // 绘制白色边框
            g2d.setColor(Color.WHITE);
            g2d.setStroke(new BasicStroke(1.5f));
            g2d.drawPolygon(xPoints, yPoints, 3);
            // 绘制白色叹号
            g2d.setColor(Color.WHITE);
            g2d.setFont(new Font("Arial", Font.BOLD, size * 3 / 4));
            FontMetrics fm = g2d.getFontMetrics();
            String exclamation = "!";
            int textWidth = fm.stringWidth(exclamation);
            int textHeight = fm.getAscent();
            g2d.drawString(exclamation, x + (size - textWidth) / 2, y + (size + textHeight) / 2 - 2);
            g2d.dispose();
         }
      };
      visualizationPanel.setLayout(new BorderLayout());
      // 添加鼠标点击监听器,检测是否点击了割草机图标
      visualizationPanel.addMouseListener(new MouseAdapter() {
         @Override
         public void mouseClicked(MouseEvent e) {
            if (SwingUtilities.isLeftMouseButton(e)) {
               Point clickPoint = e.getPoint();
               // 检查是否点击了割草机图标区域(37, 10, 20, 20)
               if (clickPoint.x >= 37 && clickPoint.x <= 57 &&
                   clickPoint.y >= 10 && clickPoint.y <= 30) {
                  // 切换以割草机为中心的模式
                  toggleCenterOnMowerMode();
               }
            }
         }
      });
      JPanel speedIndicatorPanel = createSpeedIndicatorPanel();
      visualizationPanel.add(speedIndicatorPanel, BorderLayout.NORTH);
      // 创建功能按钮面板(放在左上角)
      // 创建功能按钮面板
      JPanel functionButtonsPanel = new JPanel();
      functionButtonsPanel.setLayout(new BoxLayout(functionButtonsPanel, BoxLayout.Y_AXIS));
      functionButtonsPanel.setOpaque(false);
@@ -658,12 +972,14 @@
         }
      });
      ensureBluetoothIconsLoaded();
      bluetoothConnected = Bluelink.isConnected();
      ImageIcon initialIcon = bluetoothConnected ? bluetoothLinkedIcon : bluetoothIcon;
      // 根据串口连接状态显示图标
      SerialPortService service = sendmessage.getActiveService();
      boolean serialConnected = (service != null && service.isOpen());
      ImageIcon initialIcon = serialConnected ? bluetoothLinkedIcon : bluetoothIcon;
      if (initialIcon != null) {
         button.setIcon(initialIcon);
      } else {
         button.setText(bluetoothConnected ? "已连" : "蓝牙");
         button.setText(serialConnected ? "已连" : "蓝牙");
      }
      return button;
   }
@@ -1132,26 +1448,115 @@
      }
      startButtonShowingPause = !startButtonShowingPause;
      if (!startButtonShowingPause) {
         statusLabel.setText("作业中");
         if (stopButtonActive) {
            stopButtonActive = false;
            updateStopButtonIcon();
         }
         if (!beginMowingSession()) {
         // 检查割草机是否在作业地块边界范围内
         if (!checkMowerInBoundary()) {
            startButtonShowingPause = true;
            statusLabel.setText("待机");
            updateStartButtonAppearance();
            return;
         }
         Control04.sendStartCommandIfDebugSerialOpen();
         statusLabel.setText("作业中");
         if (stopButtonActive) {
            stopButtonActive = false;
            updateStopButtonIcon();
         }
      if (!beginMowingSession()) {
         startButtonShowingPause = true;
         statusLabel.setText("待机");
         updateStartButtonAppearance();
         return;
      }
      } else {
         statusLabel.setText("暂停中");
         pauseMowingSession();
         Control04.sendPauseCommandIfDebugSerialOpen();
      }
      updateStartButtonAppearance();
   }
   /**
    * 检查割草机是否在当前选中的作业地块边界范围内
    * @return 如果割草机在边界内返回true,否则返回false并显示提示
    */
   private boolean checkMowerInBoundary() {
      if (mapRenderer == null) {
         return true; // 如果没有地图渲染器,跳过检查
      }
      // 获取当前边界
      List<Point2D.Double> boundary = mapRenderer.getCurrentBoundary();
      if (boundary == null || boundary.size() < 3) {
         return true; // 如果没有边界或边界点不足,跳过检查
      }
      // 获取割草机位置
      Gecaoji mower = mapRenderer.getMower();
      if (mower == null || !mower.hasValidPosition()) {
         showCustomMessageDialog("无法获取割草机位置,请检查设备连接", "提示");
         return false;
      }
      Point2D.Double mowerPosition = mower.getPosition();
      if (mowerPosition == null) {
         showCustomMessageDialog("无法获取割草机位置,请检查设备连接", "提示");
         return false;
      }
      // 使用 MowerBoundaryChecker 检查是否在边界内
      boolean isInside = MowerBoundaryChecker.isInsideBoundaryPoints(
         boundary,
         mowerPosition.x,
         mowerPosition.y
      );
      if (!isInside) {
         showCustomMessageDialog("请将割草机开到作业地块内然后点击开始作业", "提示");
         return false;
      }
      return true;
   }
   /**
    * 显示自定义消息对话框,使用 buttonset 创建确定按钮
    * @param message 消息内容
    * @param title 对话框标题
    */
   private void showCustomMessageDialog(String message, String title) {
      Window parentWindow = SwingUtilities.getWindowAncestor(this);
      JDialog dialog = new JDialog(parentWindow, title, Dialog.ModalityType.APPLICATION_MODAL);
      dialog.setLayout(new BorderLayout(20, 20));
      dialog.setResizable(false);
      // 内容面板
      JPanel contentPanel = new JPanel(new BorderLayout(0, 15));
      contentPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 10, 20));
      contentPanel.setBackground(Color.WHITE);
      // 消息标签
      JLabel messageLabel = new JLabel("<html><div style='text-align: center;'>" + message + "</div></html>");
      messageLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
      messageLabel.setHorizontalAlignment(SwingConstants.CENTER);
      contentPanel.add(messageLabel, BorderLayout.CENTER);
      // 按钮面板
      JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 10, 0));
      buttonPanel.setBorder(BorderFactory.createEmptyBorder(10, 0, 0, 0));
      buttonPanel.setOpaque(false);
      // 使用 buttonset 创建确定按钮
      JButton okButton = buttonset.createStyledButton("确定", THEME_COLOR);
      okButton.addActionListener(e -> dialog.dispose());
      buttonPanel.add(okButton);
      contentPanel.add(buttonPanel, BorderLayout.SOUTH);
      dialog.add(contentPanel, BorderLayout.CENTER);
      dialog.pack();
      dialog.setLocationRelativeTo(this);
      dialog.setVisible(true);
   }
   private void handleStopAction() {
      if (handheldCaptureInlineUiActive) {
         handleHandheldFinishAction();
@@ -1167,7 +1572,6 @@
         statusLabel.setText("已结束");
         startButtonShowingPause = false;
         stopMowingSession();
         Control04.sendStopCommandIfDebugSerialOpen();
      } else {
         statusLabel.setText("待机");
         startButtonShowingPause = true;
@@ -1459,19 +1863,15 @@
      if (bluetoothBtn == null) {
         return;
      }
      if (Bluelink.isConnected()) {
         Bluelink.disconnect();
         bluetoothConnected = false;
      } else {
         boolean success = Bluelink.connect();
         if (success) {
            bluetoothConnected = true;
         } else {
            bluetoothConnected = false;
            JOptionPane.showMessageDialog(this, "蓝牙连接失败,请重试", "提示", JOptionPane.WARNING_MESSAGE);
         }
      }
      updateBluetoothButtonIcon();
      // 弹出系统调试页面
      showDebugDialog();
   }
   private void showDebugDialog() {
      Window parentWindow = SwingUtilities.getWindowAncestor(this);
      debug debugDialog = new debug(parentWindow, THEME_COLOR);
      debugDialog.setLocationRelativeTo(this); // 居中显示在首页
      debugDialog.setVisible(true);
   }
   private void updateBluetoothButtonIcon() {
@@ -1479,13 +1879,15 @@
         return;
      }
      ensureBluetoothIconsLoaded();
      bluetoothConnected = Bluelink.isConnected();
      ImageIcon icon = bluetoothConnected ? bluetoothLinkedIcon : bluetoothIcon;
      // 根据串口连接状态显示图标
      SerialPortService service = sendmessage.getActiveService();
      boolean serialConnected = (service != null && service.isOpen());
      ImageIcon icon = serialConnected ? bluetoothLinkedIcon : bluetoothIcon;
      if (icon != null) {
         bluetoothBtn.setIcon(icon);
         bluetoothBtn.setText(null);
      } else {
         bluetoothBtn.setText(bluetoothConnected ? "已连" : "蓝牙");
         bluetoothBtn.setText(serialConnected ? "已连" : "蓝牙");
      }
   }
@@ -1497,7 +1899,7 @@
      JPanel rightPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 10, 0));
      rightPanel.setOpaque(false);
      fixQualityIndicator = new FixQualityIndicator();
   fixQualityIndicator = new gpszhuangtai(THEME_COLOR);
      fixQualityIndicator.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
      fixQualityIndicator.addMouseListener(new MouseAdapter() {
         @Override
@@ -3113,7 +3515,11 @@
         String obstacles,
         String plannedPath,
         Runnable returnAction) {
      if (mapRenderer == null || !isMeaningfulValue(plannedPath)) {
      if (mapRenderer == null) {
         return false;
      }
      // 允许没有路径的预览(例如障碍物预览),只要有返回回调即可
      if (!isMeaningfulValue(plannedPath) && returnAction == null) {
         return false;
      }
@@ -3140,10 +3546,17 @@
      mapRenderer.setCurrentBoundary(boundary, landNumber, landName);
      mapRenderer.setCurrentObstacles(obstacles, landNumber);
      mapRenderer.setCurrentPlannedPath(plannedPath);
      // 只有在有路径时才设置路径
      if (isMeaningfulValue(plannedPath)) {
         mapRenderer.setCurrentPlannedPath(plannedPath);
      } else {
         mapRenderer.setCurrentPlannedPath(null);
      }
      mapRenderer.clearHandheldBoundaryPreview();
      mapRenderer.setBoundaryPointSizeScale(1.0d);
      mapRenderer.setBoundaryPointsVisible(isMeaningfulValue(boundary));
      // 启用障碍物边界点显示
      mapRenderer.setObstaclePointsVisible(isMeaningfulValue(obstacles));
      String displayName = isMeaningfulValue(landName) ? landName : landNumber;
      updateCurrentAreaName(displayName);
@@ -3290,47 +3703,7 @@
      return !"未选择地块".equals(trimmed);
   }
   private final class FixQualityIndicator extends JComponent {
      private static final long serialVersionUID = 1L;
      private static final int DIAMETER = 16;
      private String currentCode;
      private Color currentColor = new Color(160, 160, 160);
      private FixQualityIndicator() {
         setPreferredSize(new Dimension(DIAMETER, DIAMETER));
         setMinimumSize(new Dimension(DIAMETER, DIAMETER));
         setMaximumSize(new Dimension(DIAMETER, DIAMETER));
         setToolTipText("未知");
      }
      private void setQuality(String code) {
         if (Objects.equals(currentCode, code)) {
            return;
         }
         currentCode = code;
         currentColor = resolveFixQualityColor(code);
         setToolTipText(resolveFixQualityDescription(code));
         repaint();
      }
      @Override
      protected void paintComponent(Graphics g) {
         super.paintComponent(g);
         Graphics2D g2 = (Graphics2D) g.create();
         try {
            g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            int diameter = Math.min(getWidth(), getHeight()) - 2;
            int x = (getWidth() - diameter) / 2;
            int y = (getHeight() - diameter) / 2;
            g2.setColor(currentColor);
            g2.fillOval(x, y, diameter, diameter);
            g2.setColor(new Color(255, 255, 255, 128));
            g2.drawOval(x, y, diameter, diameter);
         } finally {
            g2.dispose();
         }
      }
   }
   // 测试方法
    public static void main(String[] args) {