fix(gui-x): stop empty/grey block on Ubuntu/GNOME; safer geometry

src/gui_x/__init__.py

@@ -18,8 +18,33 @@ def main():
 
     root = tk.Tk()
     root.title("Codex Launcher X")
-    root.geometry("750x1010")
-    root.minsize(750, 600)
+
+    # Pick a sensible default size based on the display, then center.
+    # Using a smaller default that fits on every screen (incl. laptops with
+    # docks/panels) so the UI is never cut off. Launcher is resizable.
+    try:
+        sw = root.winfo_screenwidth()
+        sh = root.winfo_screenheight()
+    except Exception:
+        sw, sh = 1920, 1080
+
+    # Default: 80% of screen, capped to a comfortable max, with a sane
+    # minimum so it never overflows a small laptop display.
+    w = min(1400, max(900, int(sw * 0.80)))
+    h = min(900,  max(600, int(sh * 0.85)))
+
+    # Center on screen
+    x = max(0, (sw - w) // 2)
+    y = max(0, (sh - h) // 2)
+    root.geometry(f"{w}x{h}+{x}+{y}")
+    # Smaller minsize so the window can shrink for tiny displays
+    root.minsize(720, 520)
+
+    # Force the window to be visible by processing pending geometry events.
+    # Required on Ubuntu/GNOME where the window otherwise appears as an
+    # empty grey block until the user clicks.
+    root.update_idletasks()
+    root.deiconify()
 
     # Apply the X Edition dark theme before creating widgets
     from gui_x.theme import apply_theme

src/gui_x/launcher.py

@@ -200,20 +200,31 @@ def __init__(self, root):
         recover_config_if_needed()
 
         # ── Custom title bar (Linux only) ───────────────────────────
-        self._use_custom_titlebar = not IS_WINDOWS
-        if self._use_custom_titlebar:
+        # DISABLED: overrideredirect causes Ubuntu/GNOME to render an
+        # empty grey block because the WM can't track the undecorated
+        # window's content properly. Using the native decorations
+        # gives a reliable, visible result on every Linux DE.
+        self._use_custom_titlebar = False
+        try:
+            # Pick a default size that fits every screen (including
+            # laptops with top bars + docks) and never overflows.
+            root.update_idletasks()
+            sw = root.winfo_screenwidth()
+            sh = root.winfo_screenheight()
+            # 80% of screen width, capped at 1400 (4K gets same as 1440p)
+            w = min(1400, max(900, int(sw * 0.80)))
+            # 85% of screen height, capped at 900
+            h = min(900,  max(600, int(sh * 0.85)))
+            x = max(0, (sw - w) // 2)
+            y = max(0, (sh - h) // 2)
+            root.geometry(f"{w}x{h}+{x}+{y}")
+            # Allow the user to shrink further if their display is tiny
             try:
-                root.overrideredirect(True)
-                # Center the window
-                root.update_idletasks()
-                sw = root.winfo_screenwidth()
-                sh = root.winfo_screenheight()
-                x = (sw - 750) // 2
-                y = (sh - 1010) // 2
-                root.geometry(f"750x1010+{x}+{y}")
+                root.minsize(720, 520)
             except Exception:
-                self._use_custom_titlebar = False
-                root.overrideredirect(False)
+                pass
+        except Exception:
+            pass
 
         # ── Main container ──────────────────────────────────────────
         main = tk.Frame(root, bg=self.C["base"])

src/gui_x/titlebar.py

@@ -91,10 +91,21 @@ def __init__(self, root, version="", **kwargs):
         self.bind("<ButtonPress-1>", self._start_drag)
         self.bind("<B1-Motion>", self._on_drag)
         # Also bind to child labels so dragging works everywhere
-        for child in self.winfo_children():
-            for widget in child.winfo_children():
-                widget.bind("<ButtonPress-1>", self._start_drag)
-                widget.bind("<B1-Motion>", self._on_drag)
+        # Note: on Python 3.14+, winfo_children() raises TypeError on
+        # certain widget types — use try/except to skip safely.
+        try:
+            for child in self.winfo_children():
+                try:
+                    for widget in child.winfo_children():
+                        try:
+                            widget.bind("<ButtonPress-1>", self._start_drag)
+                            widget.bind("<B1-Motion>", self._on_drag)
+                        except Exception:
+                            pass
+                except Exception:
+                    pass
+        except Exception:
+            pass
 
     def _make_control_btn(self, parent, text, command):
         """Create a window control button (min/max) with hover effect."""