improve highlighting

highlighted_range.py

@@ -0,0 +1,23 @@
+from PyQt6.QtCore import *
+from PyQt6.QtGui import *
+from PyQt6.QtWidgets import *
+
+
+class HighlightedRange:
+    def __init__(self, start: int, width: int, brush: QBrush = QBrush(), pen: QPen = Qt.PenStyle.NoPen):
+        self.start = start
+        self.width = width
+        self.brush = brush
+        self.pen = pen
+
+    def get_start(self):
+        return self.start
+
+    def get_width(self):
+        return self.width
+
+    def get_brush(self):
+        return self.brush
+
+    def get_pen(self):
+        return self.pen