update docs

dreader/hal_pygame.py

@@ -200,6 +200,8 @@ class PygameDisplayHAL(EventLoopHAL):
 
                 # Detect gesture type
                 gesture = None
+                # For swipe gestures, use the starting position (mouse_down_pos)
+                # For tap/long-press, use the ending position (mouse_up_pos)
                 x, y = mouse_up_pos
 
                 if distance < self.drag_threshold:
@@ -211,7 +213,8 @@ class PygameDisplayHAL(EventLoopHAL):
                         gesture = GestureType.TAP
                         logger.info(f"[GESTURE] ✓ Detected: TAP")
                 else:
-                    # Swipe
+                    # Swipe - use starting position for location-based checks
+                    x, y = self.mouse_down_pos
                     if abs(dx) > abs(dy):
                         # Horizontal swipe
                         if dx > 0:
@@ -233,6 +236,8 @@ class PygameDisplayHAL(EventLoopHAL):
                 self.mouse_down_pos = None
 
                 if gesture:
+                    # For swipe gestures, (x,y) is the start position
+                    # For tap/long-press, (x,y) is the tap position
                     logger.info(f"[EVENT] Returning TouchEvent: {gesture.value} at ({x}, {y})")
                     return TouchEvent(gesture, x, y)
                 else: