From 32524195d474b74e48916867b2a6c2f022a40d98 Mon Sep 17 00:00:00 2001
From: 张世豪 <979909237@qq.com>
Date: 星期二, 09 十二月 2025 19:36:32 +0800
Subject: [PATCH] 20251209

---
 src/gecaoji/Gecaoji.java |   48 ++++++++++++++++++++++++++++++++++++------------
 1 files changed, 36 insertions(+), 12 deletions(-)

diff --git a/src/gecaoji/Gecaoji.java b/src/gecaoji/Gecaoji.java
index 177832f..2aca713 100644
--- a/src/gecaoji/Gecaoji.java
+++ b/src/gecaoji/Gecaoji.java
@@ -15,27 +15,35 @@
     private static final double ICON_SCALE_FACTOR = 0.8;
     private static final double MIN_SCALE = 1e-6;
     private static final Color FALLBACK_FILL = new Color(0, 150, 0);
+    private static final String DEFAULT_ICON_PATH = "image/gecaoji.png";
+    private static final String HANDHELD_ICON_PATH = "image/URT.png";
 
-    private final Image mowerIcon;
+    private final Image defaultIcon;
+    private final Image handheldIcon;
+    private Image activeIcon;
+    private boolean handheldIconActive;
     private final Ellipse2D.Double fallbackShape = new Ellipse2D.Double();
     private Point2D.Double position = new Point2D.Double();
     private boolean positionValid;
     private double headingDegrees;
 
     public Gecaoji() {
-        mowerIcon = loadIcon();
+        defaultIcon = loadIcon(DEFAULT_ICON_PATH);
+        handheldIcon = loadIcon(HANDHELD_ICON_PATH);
+        activeIcon = defaultIcon != null ? defaultIcon : handheldIcon;
+        handheldIconActive = false;
         refreshFromDevice();
     }
 
-    private Image loadIcon() {
+    private Image loadIcon(String path) {
         try {
-            ImageIcon icon = new ImageIcon("image/gecaoji.png");
+            ImageIcon icon = new ImageIcon(path);
             if (icon.getIconWidth() <= 0 || icon.getIconHeight() <= 0) {
                 return null;
             }
             return icon.getImage();
         } catch (Exception ex) {
-            System.err.println("Unable to load mower icon: " + ex.getMessage());
+            System.err.println("Unable to load mower icon from " + path + ": " + ex.getMessage());
             return null;
         }
     }
@@ -51,7 +59,7 @@
         double y = parseCoordinate(device.getRealtimeY());
         double heading = parseHeading(device.getHeading());
         if (Double.isNaN(x) || Double.isNaN(y)) {
-            positionValid = false;
+            // Keep showing the last known mower position when temporary sensor glitches occur.
             return;
         }
 
@@ -109,16 +117,17 @@
         }
 
     double worldSize = (ICON_PIXEL_SIZE * ICON_SCALE_FACTOR) / Math.max(scale, MIN_SCALE);
-        if (mowerIcon != null && mowerIcon.getWidth(null) > 0 && mowerIcon.getHeight(null) > 0) {
-            drawIcon(g2d, worldSize);
+        Image icon = activeIcon;
+        if (icon != null && icon.getWidth(null) > 0 && icon.getHeight(null) > 0) {
+            drawIcon(g2d, worldSize, icon);
         } else {
             drawFallback(g2d, worldSize);
         }
     }
 
-    private void drawIcon(Graphics2D g2d, double worldSize) {
-        double iconWidth = mowerIcon.getWidth(null);
-        double iconHeight = mowerIcon.getHeight(null);
+    private void drawIcon(Graphics2D g2d, double worldSize, Image icon) {
+        double iconWidth = icon.getWidth(null);
+        double iconHeight = icon.getHeight(null);
         double maxSide = Math.max(iconWidth, iconHeight);
         double scaleFactor = worldSize / Math.max(maxSide, MIN_SCALE);
         double rotationRadians = Math.toRadians(-headingDegrees);
@@ -132,7 +141,7 @@
         transformed.scale(scaleFactor, scaleFactor);
         transformed.translate(-iconWidth / 2.0, -iconHeight / 2.0);
         g2d.setTransform(transformed);
-        g2d.drawImage(mowerIcon, 0, 0, null);
+        g2d.drawImage(icon, 0, 0, null);
         g2d.setTransform(original);
     }
 
@@ -177,4 +186,19 @@
         double worldSize = (ICON_PIXEL_SIZE * ICON_SCALE_FACTOR) / Math.max(scale, MIN_SCALE);
         return worldSize / 2.0;
     }
+
+    public boolean useHandheldIcon(boolean handheldMode) {
+        if (handheldIconActive == handheldMode) {
+            return false;
+        }
+        handheldIconActive = handheldMode;
+        Image next = handheldMode
+            ? (handheldIcon != null ? handheldIcon : defaultIcon)
+            : defaultIcon;
+        if (next == null) {
+            next = handheldIcon;
+        }
+        activeIcon = next;
+        return true;
+    }
 }

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