From a0a5e722b3997ba3bc059d5bc09aafdc7a254035 Mon Sep 17 00:00:00 2001
From: "n loewen (aider)" <nick@nloewen.com>
Date: Sat, 7 Jun 2025 21:37:13 +0100
Subject: [PATCH] refactor: Improve mouse drag and selection event handling
 logic

---
 gtm2.py | 58 ++++++++++++++++++++++++++++++---------------------------
 1 file changed, 31 insertions(+), 27 deletions(-)

diff --git a/gtm2.py b/gtm2.py
index d636314..52ef134 100755
--- a/gtm2.py
+++ b/gtm2.py
@@ -377,35 +377,39 @@ def handle_mouse_input(stdscr, state):
     try:
         _, mx, my, _, bstate = curses.getmouse()
 
-        if bstate & curses.BUTTON1_PRESSED:
-            # Only start a new action if no action is in progress
-            if not state.dragging_divider and not state.is_selecting:
-                if abs(mx - state.divider_col) <= 1:
-                    state.dragging_divider = True
-                else:
-                    state.is_selecting = True
-                    state.selection_start_coord = (mx, my)
-                    state.selection_end_coord = (mx, my)
-        
-        if state.dragging_divider:
-            state.update_divider(mx)
-        elif state.is_selecting:
-            state.selection_end_coord = (mx, my)
-        
-        if bstate & curses.BUTTON1_RELEASED:
+        # If a drag/selection is in progress
+        if state.is_selecting or state.dragging_divider:
+            # Update coordinates for any event during drag
             if state.dragging_divider:
-                state.dragging_divider = False
+                state.update_divider(mx)
             elif state.is_selecting:
-                state.is_selecting = False
-                start_x, start_y = state.selection_start_coord
-                
-                if start_x == mx and start_y == my:
-                    state.focus = "left" if mx < state.divider_col else "right"
-                else:
-                    copy_selection_to_clipboard(stdscr, state)
-                
-                state.selection_start_coord = None
-                state.selection_end_coord = None
+                state.selection_end_coord = (mx, my)
+
+            if bstate & curses.BUTTON1_RELEASED:
+                # End of drag/selection
+                if state.dragging_divider:
+                    state.dragging_divider = False
+                elif state.is_selecting:
+                    # A simple click is a press and release at the same spot
+                    if state.selection_start_coord == state.selection_end_coord:
+                        state.focus = "left" if mx < state.divider_col else "right"
+                    else:
+                        # This was a drag, so copy the selection
+                        copy_selection_to_clipboard(stdscr, state)
+                    
+                    state.is_selecting = False
+                    state.selection_start_coord = None
+                    state.selection_end_coord = None
+        
+        # If no drag/selection is in progress, check for a new one starting
+        elif bstate & curses.BUTTON1_PRESSED:
+            if abs(mx - state.divider_col) <= 1:
+                state.dragging_divider = True
+            else:
+                state.is_selecting = True
+                state.selection_start_coord = (mx, my)
+                state.selection_end_coord = (mx, my)
+
     except curses.error:
         pass