From 9e57366e6032f1c142eb712ece9b46067c159299 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Mon, 21 Feb 2022 23:57:01 +0100
Subject: [PATCH] added functions to redraw and unmap screen gadgets

---
 src/screens.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/screens.c b/src/screens.c
index 379ec020..62eb2979 100644
--- a/src/screens.c
+++ b/src/screens.c
@@ -277,10 +277,13 @@ static void HandleInfoScreen_Version(int);
 static void ModifyGameSpeedIfNeeded(void);
 static void DisableVsyncIfNeeded(void);
 
+static void RedrawScreenMenuGadgets(int);
 static void MapScreenMenuGadgets(int);
 static void UnmapScreenMenuGadgets(int);
 static void MapScreenGadgets(int);
+static void UnmapScreenGadgets(void);
 static void MapScreenTreeGadgets(TreeInfo *);
+static void UnmapScreenTreeGadgets(void);
 
 static void UpdateScreenMenuGadgets(int, boolean);
 
@@ -10061,6 +10064,15 @@ void FreeScreenGadgets(void)
     FreeGadget(screen_gadget[i]);
 }
 
+static void RedrawScreenMenuGadgets(int screen_mask)
+{
+  int i;
+
+  for (i = 0; i < NUM_SCREEN_MENUBUTTONS; i++)
+    if (screen_mask & menubutton_info[i].screen_mask)
+      RedrawGadget(screen_gadget[menubutton_info[i].gadget_id]);
+}
+
 static void MapScreenMenuGadgets(int screen_mask)
 {
   int i;
@@ -10111,11 +10123,27 @@ static void MapScreenGadgets(int num_entries)
     MapGadget(screen_gadget[scrollbar_info[i].gadget_id]);
 }
 
+static void UnmapScreenGadgets()
+{
+  int i;
+
+  for (i = 0; i < NUM_SCREEN_SCROLLBUTTONS; i++)
+    UnmapGadget(screen_gadget[scrollbutton_info[i].gadget_id]);
+
+  for (i = 0; i < NUM_SCREEN_SCROLLBARS; i++)
+    UnmapGadget(screen_gadget[scrollbar_info[i].gadget_id]);
+}
+
 static void MapScreenTreeGadgets(TreeInfo *ti)
 {
   MapScreenGadgets(numTreeInfoInGroup(ti));
 }
 
+static void UnmapScreenTreeGadgets(void)
+{
+  UnmapScreenGadgets();
+}
+
 static void HandleScreenGadgets(struct GadgetInfo *gi)
 {
   int id = gi->custom_id;
-- 
2.34.1