From d88664ec42454842f38231aed5fbdfe621b53393 Mon Sep 17 00:00:00 2001
From: Cristian Vlasceanu <cristi.vlasceanu@gmail.com>
Date: Thu, 28 Feb 2013 08:40:18 +0000
Subject: [PATCH] menuitemslider wrap-around and mouse wheel
 (http://forum.cubers.net/thread-6079-post-122565.html#pid122565). Wrap around
 behavior is toggled via "wrapslider" variable (default is off)

git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@7262 e016b1c5-ed68-44aa-a2f7-31cac88cffde
---
 source/src/menus.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/source/src/menus.cpp b/source/src/menus.cpp
index 44868942..a2f130a3 100644
--- a/source/src/menus.cpp
+++ b/source/src/menus.cpp
@@ -562,6 +562,7 @@ struct mitemtextinput : mitemtext
 };
 
 // slider item
+VARP(wrapslider, 0, 0, 1);
 
 struct mitemslider : mitem
 {
@@ -623,7 +624,12 @@ struct mitemslider : mitem
     void slide(bool right)
     {
         value += right ? step : -step;
-        value = min(max_, max(min_, value));
+        if (wrapslider)
+        {
+            if (value > max_) value = min_;
+            if (value < min_) value = max_;
+        }
+        else value = min(max_, max(min_, value));
         displaycurvalue();
         if(action)
         {
@@ -1029,6 +1035,13 @@ COMMAND(menuitemkeyinput, "ss");
 COMMAND(menuitemcheckbox, "sss");
 COMMAND(menuselectionbgcolor, "ssss");
 
+static bool iskeypressed(int key)
+{
+    int numkeys = 0;
+    Uint8* state = SDL_GetKeyState(&numkeys);
+    return key < numkeys && state[key] != 0;
+}
+
 bool menukey(int code, bool isdown, int unicode, SDLMod mod)
 {
     if(!curmenu) return false;
@@ -1054,11 +1067,13 @@ bool menukey(int code, bool isdown, int unicode, SDLMod mod)
                 break;
             case SDLK_UP:
             case SDL_AC_BUTTON_WHEELUP:
+                if(iskeypressed(SDLK_LCTRL)) return menukey(SDLK_LEFT, isdown, 0);
                 if(!curmenu->allowinput) return false;
                 menusel--;
                 break;
             case SDLK_DOWN:
             case SDL_AC_BUTTON_WHEELDOWN:
+                if(iskeypressed(SDLK_LCTRL)) return menukey(SDLK_RIGHT, isdown, 0);
                 if(!curmenu->allowinput) return false;
                 menusel++;
                 break;