feat: column color system v1

column_letters.py

@@ -0,0 +1,28 @@
+def index_to_column_letters(index: int) -> str:
+    """Convert a 0-based column index to Excel-style letters (A, B, ..., Z, AA, AB, ...).
+
+    Args:
+        index: Zero-based column index (0 => 'A').
+
+    Returns:
+        The Excel-style column label as a string.
+
+    Raises:
+        ValueError: If index is negative.
+    """
+    if not isinstance(index, int):
+        raise TypeError("index must be an int")
+    if index < 0:
+        raise ValueError("index must be non-negative")
+
+    # Excel-like base-26 with no zero digit: 0->A, 25->Z, 26->AA
+    result = []
+    n = index
+    while True:
+        n, rem = divmod(n, 26)
+        result.append(chr(ord('A') + rem))
+        if n == 0:
+            break
+        n -= 1  # Carry handling due to lack of zero digit in Excel columns
+    return ''.join(reversed(result))
+

config.json

@@ -13,6 +13,17 @@
         "workspace_files": [
             "F:\\ProjectsNew\\Diablo2TextEditor\\CubeMainWorking.txt",
             "F:\\ProjectsNew\\Diablo2TextEditor\\CubeMainNotWorking.txt"
-        ]
+        ],
+        "enable_column_colors": true,
+        "column_color_overrides": {
+            "ladder": {
+                "bg": "#FFE0B2",
+                "fg": "#000000"
+            }
+        },
+        "custom_column_color_palette": [],
+        "show_column_letters_enabled": true,
+        "header_min_section_size": 130,
+        "high_contrast_column_text_enabled": true
     }
 }

config_manager.py

@@ -28,6 +28,10 @@ def _load_config_unlocked(self):
         settings.setdefault("crosshair_enabled", True)
         settings.setdefault("crosshair_thickness", 1)
         settings.setdefault("crosshair_hover_enabled", True)
+        # Column color feature configuration
+        settings.setdefault("enable_column_colors", True)
+        settings.setdefault("column_color_overrides", {})
+        settings.setdefault("custom_column_color_palette", [])
         # Add the new setting for freezing the first row
         #settings.setdefault("freeze_first_row_enabled", False)
         config["settings"] = settings