more camera work

thermion_flutter/thermion_flutter/lib/src/widgets/src/camera/camera_selector_widget.dart

@@ -0,0 +1,79 @@
+import 'package:flutter/material.dart';
+import 'package:thermion_dart/thermion_dart.dart';
+
+class CameraSelectorWidget extends StatefulWidget {
+  final ThermionViewer viewer;
+
+  const CameraSelectorWidget({Key? key, required this.viewer}) : super(key: key);
+
+  @override
+  _CameraSelectorWidgetState createState() => _CameraSelectorWidgetState();
+}
+
+class _CameraSelectorWidgetState extends State<CameraSelectorWidget> {
+  int _activeIndex = 0;
+
+  @override
+  Widget build(BuildContext context) {
+    int cameraCount = widget.viewer.getCameraCount();
+
+    return Container(
+      height:32,
+      margin: const EdgeInsets.all(8),
+      padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 12),
+      decoration: BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.circular(8),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.black.withOpacity(0.1),
+            blurRadius: 4,
+            offset: const Offset(0, 2),
+          ),
+        ],
+      ),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.center,
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          _buildCameraButton("Main", 0),
+          if (cameraCount > 1) const VerticalDivider(width: 16, thickness: 1),
+          ...List.generate(cameraCount - 1, (index) {
+            return _buildCameraButton("${index + 1}", index + 1);
+          }),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildCameraButton(String label, int index) {
+    bool isActive = _activeIndex == index;
+    return Flexible(child:TextButton(
+      onPressed: () async {
+        if (index == 0) {
+          await widget.viewer.setMainCamera();
+        } else {
+          Camera camera = widget.viewer.getCameraAt(index);
+          await widget.viewer.setActiveCamera(camera);
+        }
+        setState(() {
+          _activeIndex = index;
+        });
+      },
+      style: TextButton.styleFrom(
+        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+        minimumSize: Size.zero,
+        tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+        backgroundColor: isActive ? Colors.blue.withOpacity(0.1) : null,
+      ),
+      child: Text(
+        label,
+        style: TextStyle(
+          fontSize: 10,
+          fontWeight: isActive ? FontWeight.bold : FontWeight.normal,
+          color: isActive ? Colors.blue : Colors.black87,
+        ),
+      ),
+    ));
+  }
+}

thermion_flutter/thermion_flutter/lib/src/widgets/widgets.dart

@@ -2,3 +2,4 @@ library;
 
 export 'src/thermion_widget.dart';
 export 'src/thermion_listener_widget.dart';
+export 'src/camera/camera_selector_widget.dart';