From 7ae99e1573d948cb3e8ae98e6e7adb746956bdc3 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sat, 29 Sep 2018 10:28:11 +0200
Subject: [PATCH] added gadget tag to always execute the callback action when
 leaving gadget

---
 src/libgame/gadgets.c | 31 +++++++++++++++++++------------
 src/libgame/gadgets.h |  2 ++
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/src/libgame/gadgets.c b/src/libgame/gadgets.c
index 64f0e0a9..937f7a3a 100644
--- a/src/libgame/gadgets.c
+++ b/src/libgame/gadgets.c
@@ -213,6 +213,12 @@ static void default_callback_action(void *ptr)
   return;
 }
 
+static void DoGadgetCallbackAction(struct GadgetInfo *gi, boolean changed)
+{
+  if (changed || gi->callback_action_always)
+    gi->callback_action(gi);
+}
+
 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
 {
   struct GadgetDesign *gd;
@@ -841,6 +847,10 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
 	gi->direct_draw = (boolean)va_arg(ap, int);
 	break;
 
+      case GDI_CALLBACK_ACTION_ALWAYS:
+	gi->callback_action_always = (boolean)va_arg(ap, int);
+	break;
+
       case GDI_CHECKED:
 	gi->checked = (boolean)va_arg(ap, int);
 	break;
@@ -1611,8 +1621,8 @@ boolean HandleGadgets(int mx, int my, int button)
 
     gi->event.type = GD_EVENT_TEXT_LEAVING;
 
-    if (gadget_changed && !(gi->type & GD_TYPE_SELECTBOX))
-      gi->callback_action(gi);
+    if (!(gi->type & GD_TYPE_SELECTBOX))
+      DoGadgetCallbackAction(gi, gadget_changed);
 
     last_gi = NULL;
 
@@ -1865,8 +1875,8 @@ boolean HandleGadgets(int mx, int my, int button)
 	gi->event.type = GD_EVENT_MOVING;
 	gi->event.off_borders = FALSE;
 
-	if (gi->event_mask & GD_EVENT_MOVING && changed_position)
-	  gi->callback_action(gi);
+	if (gi->event_mask & GD_EVENT_MOVING)
+	  DoGadgetCallbackAction(gi, changed_position);
 
 	return TRUE;
       }
@@ -2021,9 +2031,9 @@ boolean HandleGadgets(int mx, int my, int button)
     gi->event.type = GD_EVENT_MOVING;
     gi->event.off_borders = gadget_moving_off_borders;
 
-    if (gi->event_mask & GD_EVENT_MOVING && changed_position &&
+    if (gi->event_mask & GD_EVENT_MOVING &&
 	(gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
-      gi->callback_action(gi);
+      DoGadgetCallbackAction(gi, changed_position);
   }
 
   if (gadget_released_inside)
@@ -2055,10 +2065,8 @@ boolean HandleGadgets(int mx, int my, int button)
     gi->state = GD_BUTTON_UNPRESSED;
     gi->event.type = GD_EVENT_RELEASED;
 
-    if ((gi->event_mask & GD_EVENT_RELEASED) && gadget_changed)
-    {
-      gi->callback_action(gi);
-    }
+    if ((gi->event_mask & GD_EVENT_RELEASED))
+      DoGadgetCallbackAction(gi, gadget_changed);
   }
 
   if (gadget_released_off_borders)
@@ -2149,8 +2157,7 @@ boolean HandleGadgetsKeyInput(Key key)
       last_gi = NULL;
     }
 
-    if (gadget_changed)
-      gi->callback_action(gi);
+    DoGadgetCallbackAction(gi, gadget_changed);
   }
   else if (gi->type & GD_TYPE_TEXT_INPUT)	/* only valid for text input */
   {
diff --git a/src/libgame/gadgets.h b/src/libgame/gadgets.h
index 3cfd3dbb..5f873747 100644
--- a/src/libgame/gadgets.h
+++ b/src/libgame/gadgets.h
@@ -112,6 +112,7 @@
 #define GDI_INFO_TEXT			48
 #define GDI_ACTIVE			49
 #define GDI_DIRECT_DRAW			50
+#define GDI_CALLBACK_ACTION_ALWAYS	51
 
 /* gadget deactivation hack */
 #define GDI_ACTIVE_POS(a)		((a) < 0 ? POS_OFFSCREEN : (a))
@@ -244,6 +245,7 @@ struct GadgetInfo
   boolean mapped;			/* gadget is mapped on the screen */
   boolean active;			/* gadget is active */
   boolean direct_draw;			/* directly draw to frontbuffer */
+  boolean callback_action_always;	/* also callback if gadget unchanged */
   int font;				/* font to use when inactive */
   int font_active;			/* font to use when active */
   int font_unselectable;		/* font to use when unselectable */
-- 
2.34.1