First upload, 18 controller version

app/ui/section_panel.py

@@ -0,0 +1,36 @@
+from __future__ import annotations
+
+from app.qt_compat import QHBoxLayout, QLabel, Qt, QVBoxLayout, QWidget
+
+
+class SectionPanel(QWidget):
+    def __init__(self, title: str, parent: QWidget | None = None) -> None:
+        super().__init__(parent)
+        self.setObjectName("sectionPanel")
+
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
+
+        self.header_widget = QWidget(self)
+        self.header_widget.setObjectName("sectionHeader")
+        self.header_widget.setFixedHeight(40)
+        header_layout = QHBoxLayout(self.header_widget)
+        header_layout.setContentsMargins(12, 0, 12, 0)
+        header_layout.setSpacing(0)
+
+        self.title_label = QLabel(self.header_widget)
+        self.title_label.setObjectName("sectionHeaderLabel")
+        self.title_label.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
+        header_layout.addWidget(self.title_label, 1)
+
+        self.body = QWidget(self)
+        self.body.setObjectName("sectionBody")
+
+        layout.addWidget(self.header_widget)
+        layout.addWidget(self.body)
+
+        self.setTitle(title)
+
+    def setTitle(self, title: str) -> None:
+        self.title_label.setText(title)