separate highlight selection from other selections

will make it easier to manage other selections externally

bigtext.py

@@ -43,10 +43,7 @@ class BigText(QWidget):
         self.v_scroll_bar.setPageStep(1)
         self.v_scroll_bar.valueChanged.connect(big_text.v_scroll_event)
 
-
-
         self.grid.addWidget(big_text,0,0)
-
         self.grid.addWidget(self.h_scroll_bar, 1, 0)
         self.grid.addWidget(self.v_scroll_bar, 0, 1)
 
@@ -69,14 +66,13 @@ class InnerBigText(QWidget):
         self.font = QFont("monospace", 12)
         self.update_font_metrics(QPainter(self))
         self.lines = []
-        self.selection_highlight = HighlightSelection(0, 0)
+        self.selection_highlight = HighlightSelection()
         self.highlights = [
             HighlightRegex(
                 r"INFO",
                 brush=QBrush(QColor(220, 112, 122)),
                 brush_full_line=QBrush(QColor(255, 112, 122))
-            ),
-            self.selection_highlight,
+            )
         ]
 
 
@@ -207,12 +203,14 @@ class InnerBigText(QWidget):
         for l in self.lines:
             self.update_longest_line(len(l.line()))
 
+        highlighters = self.highlights + [self.selection_highlight]
+
         # draw hightlights first - some characters may overlap to the next line
         # by drawing the background hightlights first we prevent that the hightlight
         # draws over a character
         y_line_offset = self.char_height;
         for l in self.lines:
-            for h in self.highlights:
+            for h in highlighters:
                 optional_highlight_range = h.compute_highlight(l)
                 if optional_highlight_range:
                     for highlight in optional_highlight_range:

highlight_selection.py

@@ -11,10 +11,8 @@ from settings import Settings
 
 
 class HighlightSelection(Highlight):
-
-    def __init__(self, start_byte: int, end_byte: int):
-        self.start_byte = start_byte
-        self.end_byte = end_byte
+    start_byte = 0
+    end_byte = 0
 
     def set_start(self, start_byte):
         self.start_byte = start_byte