1 files changed, 132 insertions, 0 deletions
diff --git a/plugins/motion_capture/camera_panel.py b/plugins/motion_capture/camera_panel.py
new file mode 100644
index 0000000..611c942
--- /dev/null
+++ b/plugins/motion_capture/camera_panel.py
@@ -0,0 +1,132 @@
+"""
+motion_capture/camera_panel.py
+
+CameraPanel for AddDeviceDialog — scans for OpenCV cameras and builds
+a CameraDevice when the user clicks "Add Device".
+"""
+
+from __future__ import annotations
+
+from PyQt6.QtCore import Qt, QThread, pyqtSignal
+from PyQt6.QtWidgets import (
+    QCheckBox, QGroupBox, QHBoxLayout, QLabel, QListWidget,
+    QListWidgetItem, QPushButton, QVBoxLayout, QWidget,
+)
+
+
+class CameraScanThread(QThread):
+    cameras_found = pyqtSignal(list)   # list of (index: int, label: str)
+
+    def run(self):
+        results = []
+        try:
+            import cv2
+            for i in range(6):
+                cap = cv2.VideoCapture(i)
+                if cap.isOpened():
+                    ret, _ = cap.read()
+                    if ret:
+                        w = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
+                        h = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
+                        results.append((i, f"Camera {i}  ({w}×{h})"))
+                    cap.release()
+        except ImportError:
+            pass
+        self.cameras_found.emit(results)
+
+
+class CameraPanel(QWidget):
+    """Config panel for Camera device in AddDeviceDialog."""
+
+    def __init__(self):
+        super().__init__()
+        self._cameras: list = []
+        self._selected_index: int = 0
+        self._scanner = None
+
+        lay = QVBoxLayout(self)
+        lay.setContentsMargins(0, 4, 0, 4)
+        lay.setSpacing(8)
+
+        self.sim_chk = QCheckBox("Simulation mode  (Lissajous pattern, no camera needed)")
+        self.sim_chk.setChecked(False)
+        lay.addWidget(self.sim_chk)
+
+        scan_grp = QGroupBox("Available Cameras")
+        sg = QVBoxLayout(scan_grp)
+        sg.setSpacing(4)
+
+        top = QHBoxLayout()
+        self._scan_btn = QPushButton("🔍  Scan Cameras")
+        self._scan_btn.setObjectName("addTraceBtn")
+        self._scan_btn.clicked.connect(self._scan)
+        self._status = QLabel("Click Scan to detect cameras")
+        self._status.setObjectName("traceSource")
+        top.addWidget(self._scan_btn)
+        top.addWidget(self._status, 1)
+        sg.addLayout(top)
+
+        self._list = QListWidget()
+        self._list.setMaximumHeight(120)
+        self._list.setObjectName("portList")
+        self._list.itemClicked.connect(self._on_select)
+        self._list.setToolTip("Click a camera to select it")
+        sg.addWidget(self._list)
+
+        hint = QLabel("↑  Click a camera above to select it")
+        hint.setObjectName("traceSource")
+        sg.addWidget(hint)
+
+        lay.addWidget(scan_grp)
+
+        note = QLabel(
+            "Requires OpenCV:  pip install opencv-python\n"
+            "Use Simulation mode if no camera is available."
+        )
+        note.setObjectName("traceSource")
+        note.setWordWrap(True)
+        lay.addWidget(note)
+        lay.addStretch()
+
+    # ── Scan ─────────────────────────────────────────────────────────────
+
+    def _scan(self):
+        self._scan_btn.setEnabled(False)
+        self._status.setText("Scanning…")
+        self._list.clear()
+        self._scanner = CameraScanThread()
+        self._scanner.cameras_found.connect(self._on_found)
+        self._scanner.start()
+
+    def _on_found(self, cameras):
+        self._scan_btn.setEnabled(True)
+        self._cameras = cameras
+        self._list.clear()
+        if not cameras:
+            self._status.setText("No cameras found")
+            item = QListWidgetItem("  No cameras detected")
+            item.setFlags(item.flags() & ~Qt.ItemFlag.ItemIsSelectable)
+            self._list.addItem(item)
+        else:
+            self._status.setText(f"{len(cameras)} camera(s) found")
+            for idx, label in cameras:
+                item = QListWidgetItem(f"  {label}")
+                item.setData(Qt.ItemDataRole.UserRole, idx)
+                self._list.addItem(item)
+            self._list.setCurrentRow(0)
+            self._selected_index = cameras[0][0]
+
+    def _on_select(self, item: QListWidgetItem):
+        idx = item.data(Qt.ItemDataRole.UserRole)
+        if idx is not None:
+            self._selected_index = idx
+
+    # ── Build ─────────────────────────────────────────────────────────────
+
+    def build_device(self, device_id: str):
+        from device import CameraDevice
+        return CameraDevice(
+            device_id=device_id,
+            camera_index=self._selected_index,
+            simulate=self.sim_chk.isChecked(),
+        )