show file size and name in status bar

logFileModel.py

@@ -4,7 +4,7 @@ import threading
 import time
 from typing import List, Optional
 
-from PyQt6.QtGui import QBrush, QColor, QPen
+from PyQt6.QtCore import pyqtSignal
 
 from highlight_regex import HighlightRegex
 from highlighting import Highlighting
@@ -16,6 +16,12 @@ from settings import Settings
 class LogFileModel:
     _query_highlight: Optional[HighlightRegex] = None
 
+    file_size_changed = pyqtSignal(str)
+    """Fires when the file size changed. **Note:** uses strings, 
+       because int in Qt signal are limited to 32bit."""
+
+    _file_size = -1
+
     def __init__(self, file: str, settings: Settings):
         self.settings = settings
         self._file = os.path.realpath(file)
@@ -117,7 +123,11 @@ class LogFileModel:
             return result
 
     def byte_count(self) -> int:
-        return os.stat(self._file).st_size
+        size = os.stat(self._file).st_size
+        if self._file_size != size:
+            # self.file_size_changed.emit(str(size))
+            self._file_size = size
+        return size
 
     def write_line(self, line: str):
         with open(self._file, 'a+b') as f: