diff --git a/src/tcviewer/settings.py b/src/tcviewer/settings.py
new file mode 100644
index 0000000..8f8e75b
--- /dev/null
+++ b/src/tcviewer/settings.py
@@ -0,0 +1,87 @@
+from typing import Any, Tuple, List
+from PySide6 import *
+
+settings = {
+    'atom': {
+        'size': 1/2.4,
+        'draw_quadrants': True,
+        'quadrant_follow_camera': True,
+        'quadrant_width': 0.02,
+    },
+    'bond': {
+    	'radius': 0.075,
+    	'color': [0, 0, 0],
+    },
+}
+
+
+class SettingsTab(QtWidgets.QWidget):
+	def __init__(self):
+		super().__init__()
+		self.layout = QtWidgets.QGridLayout()
+		self.setLayout(self.layout)
+
+	def __enter__(self):
+		return self
+
+	def __exit__(self, *args):
+		...
+
+	def add(self, section: str = None, name: str = None, default: Any = None, range: Tuple[float] = None, options: List[str] = None):
+		row = self.layout.rowCount()
+		self.layout.addWidget(QtWidgets.QLabel('    ' + name + ':'), row, 0)
+
+	def add_checkbox(self, section: str = None, name: str = None, default: bool = True):
+		row = self.layout.rowCount()
+		self.layout.addWidget(QtWidgets.QLabel('    ' + name + ':'), row, 0)
+		widg = QtWidgets.QCheckBox()
+		widg.setCheckState(QtCore.Qt.CheckState.Checked if default else QtCore.Qt.CheckState.Unchecked)
+		self.layout.addWidget(widg, row, 1)
+
+	def add_spinbox(self, section: str = None, name: str = None, default: float = None, minimum: float = None, maximum: float = None, step: float = None, decimals: int = 2, suffix_text: str = None):
+		row = self.layout.rowCount()
+		self.layout.addWidget(QtWidgets.QLabel('    ' + name + ':'), row, 0)
+		widg = QtWidgets.QDoubleSpinBox()
+		if default:
+			widg.setValue(default)
+		if minimum:
+			widg.setMinimum(minimum)
+		if maximum:
+			widg.setMaximum(maximum)
+		if step:
+			widg.setSingleStep(step)
+		if decimals:
+			widg.setDecimals(decimals)
+
+		self.layout.addWidget(widg, row, 1)
+
+		if suffix_text:
+			self.layout.addWidget(QtWidgets.QLabel(suffix_text), row, 2)
+
+
+
+class SettingsWidget(QtWidgets.QTabWidget):
+	def __init__(self):
+		super().__init__()
+
+	def add_tab(self, tab_name: str):
+		widg = SettingsTab()
+		self.addTab(widg, tab_name)
+		return widg
+
+
+class DefaultSettings(SettingsWidget):
+	def __init__(self):
+		super().__init__()
+
+		with self.add_tab('Molecule') as tab:
+			tab.add_spinbox('Atom', 'Size Ratio', 1/2.4, minimum=0, step=0.05, decimals=3)
+			tab.add_checkbox('Atom', 'Draw Quadrants', True)
+			tab.add_spinbox('Atom', 'Quadrant Width', default=0.02, minimum=0, step=0.001, decimals=3, suffix_text='Å')
+		# self.add_tab('Bond')
+
+
+if __name__ == '__main__':
+	sett = SettingsWidget()
+	with sett.add_tab('Atom') as tab:
+		...