samcam GUI: added screenshot butotn and controls

src/aare/gui/panels/samcam_panel.py

@@ -1,4 +1,5 @@
-from PySide6.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QLabel, QDoubleSpinBox, QCheckBox
+from PySide6.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QLabel, QDoubleSpinBox, QCheckBox, QLineEdit, \
+    QPushButton
 from PySide6.QtCore import Signal, Slot
 
 from aare.common.models import SampleCameraSettings, DAQStatusModel
@@ -9,6 +10,7 @@ class SamcamPanel(QWidget):
     # Signals for when exposure or gain values change
     changed = Signal(SampleCameraSettings)
     show_detections_changed = Signal(bool)
+    screenshot_requested = Signal(str, str)
     old_settings = SampleCameraSettings(gain=100, exposure=0.001)
 
     def __init__(self, parent=None):
@@ -44,6 +46,25 @@ class SamcamPanel(QWidget):
         gain_layout.addWidget(gain_label)
         gain_layout.addWidget(self.gain_spinbox)
 
+        screenshot_filename_layout = QHBoxLayout()
+        screenshot_filename_label = QLabel("Filename:")
+        self.screenshot_filename_edit = QLineEdit()
+        self.screenshot_filename_edit.setPlaceholderText("optional")
+        self.screenshot_filename_edit.setStyleSheet("QLineEdit { background-color: white; }")
+        screenshot_filename_layout.addWidget(screenshot_filename_label)
+        screenshot_filename_layout.addWidget(self.screenshot_filename_edit)
+
+        screenshot_message_layout = QHBoxLayout()
+        screenshot_message_label = QLabel("Message:")
+        self.screenshot_message_edit = QLineEdit()
+        self.screenshot_message_edit.setPlaceholderText("optional")
+        self.screenshot_message_edit.setStyleSheet("QLineEdit { background-color: white; }")
+        screenshot_message_layout.addWidget(screenshot_message_label)
+        screenshot_message_layout.addWidget(self.screenshot_message_edit)
+
+        self.screenshot_button = QPushButton("Take screenshot")
+        self.screenshot_button.clicked.connect(self.__request_screenshot)
+
         # Show detections checkbox
         detections_layout = QHBoxLayout()
         self.show_detections_checkbox = QCheckBox("Show ML detections")
@@ -54,6 +75,9 @@ class SamcamPanel(QWidget):
         # Add controls to main layout
         layout.addLayout(exposure_layout)
         layout.addLayout(gain_layout)
+        layout.addLayout(screenshot_filename_layout)
+        layout.addLayout(screenshot_message_layout)
+        layout.addWidget(self.screenshot_button)
         layout.addLayout(detections_layout)
         self.setLayout(layout)
 
@@ -61,6 +85,12 @@ class SamcamPanel(QWidget):
         self.changed.emit(SampleCameraSettings(gain=self.gain_spinbox.value(),
                                                exposure=self.exposure_spinbox.value()))
 
+    def __request_screenshot(self):
+        self.screenshot_requested.emit(
+            self.screenshot_filename_edit.text(),
+            self.screenshot_message_edit.text(),
+        )
+
     @Slot(DAQStatusModel)
     def update_daq_status(self, s: DAQStatusModel):
         if self.old_settings != s.bl.sample_camera: