Fix discrepancy between Doom and setup program when prompting for keys.

Add the ability to enable/disable key mappings so that the raw key can
be read in setup, exactly the same way that it is in Doom.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 846

2 files changed, 92 insertions, 66 deletions

diff --git a/textscreen/txt_main.c b/textscreen/txt_main.c
index d4b320a6..ee8b7a2d 100644
--- a/textscreen/txt_main.c
+++ b/textscreen/txt_main.c
@@ -44,6 +44,7 @@
 
 static SDL_Surface *screen;
 static unsigned char *screendata;
+static int key_mapping = 1;
 
 //#define TANGO
 
@@ -229,72 +230,87 @@ static int TranslateKey(SDL_keysym *sym)
 {
     switch(sym->sym)
     {
-      case SDLK_LEFT:        return KEY_LEFTARROW;
-      case SDLK_RIGHT:       return KEY_RIGHTARROW;
-      case SDLK_DOWN:        return KEY_DOWNARROW;
-      case SDLK_UP:          return KEY_UPARROW;
-      case SDLK_ESCAPE:      return KEY_ESCAPE;
-      case SDLK_RETURN:      return KEY_ENTER;
-      case SDLK_TAB:         return KEY_TAB;
-      case SDLK_F1:          return KEY_F1;
-      case SDLK_F2:          return KEY_F2;
-      case SDLK_F3:          return KEY_F3;
-      case SDLK_F4:          return KEY_F4;
-      case SDLK_F5:          return KEY_F5;
-      case SDLK_F6:          return KEY_F6;
-      case SDLK_F7:          return KEY_F7;
-      case SDLK_F8:          return KEY_F8;
-      case SDLK_F9:          return KEY_F9;
-      case SDLK_F10:         return KEY_F10;
-      case SDLK_F11:         return KEY_F11;
-      case SDLK_F12:         return KEY_F12;
-       
-      case SDLK_BACKSPACE:   return KEY_BACKSPACE;
-      case SDLK_DELETE:      return KEY_DEL;
-
-      case SDLK_PAUSE:       return KEY_PAUSE;
-
-      case SDLK_KP_EQUALS:   return KEY_EQUALS;
-
-      case SDLK_LSHIFT:
-      case SDLK_RSHIFT:
-                             return KEY_RSHIFT;
-
-      case SDLK_LCTRL:
-      case SDLK_RCTRL:
-                             return KEY_RCTRL;
-	
-      case SDLK_LALT:
-      case SDLK_LMETA:
-      case SDLK_RALT:
-      case SDLK_RMETA:
-                             return KEY_RALT;
-
-      case SDLK_CAPSLOCK:    return KEY_CAPSLOCK;
-      case SDLK_SCROLLOCK:   return KEY_SCRLCK;
-
-      case SDLK_KP0:         return KEYP_0;
-      case SDLK_KP1:         return KEYP_1;
-      case SDLK_KP2:         return KEYP_2;
-      case SDLK_KP3:         return KEYP_3;
-      case SDLK_KP4:         return KEYP_4;
-      case SDLK_KP5:         return KEYP_5;
-      case SDLK_KP6:         return KEYP_6;
-      case SDLK_KP7:         return KEYP_7;
-      case SDLK_KP8:         return KEYP_8;
-      case SDLK_KP9:         return KEYP_9;
-
-      case SDLK_HOME:        return KEY_HOME;
-      case SDLK_INSERT:      return KEY_INS;
-      case SDLK_END:         return KEY_END;
-      case SDLK_PAGEUP:      return KEY_PGUP;
-      case SDLK_PAGEDOWN:    return KEY_PGDN;
-      case SDLK_KP_MULTIPLY: return KEYP_MULTIPLY;
-      case SDLK_KP_PLUS:     return KEYP_PLUS;
-      case SDLK_KP_MINUS:    return KEYP_MINUS;
-      case SDLK_KP_DIVIDE:   return KEYP_DIVIDE;
-
-      default:               return sym->unicode;
+        case SDLK_LEFT:        return KEY_LEFTARROW;
+        case SDLK_RIGHT:       return KEY_RIGHTARROW;
+        case SDLK_DOWN:        return KEY_DOWNARROW;
+        case SDLK_UP:          return KEY_UPARROW;
+        case SDLK_ESCAPE:      return KEY_ESCAPE;
+        case SDLK_RETURN:      return KEY_ENTER;
+        case SDLK_TAB:         return KEY_TAB;
+        case SDLK_F1:          return KEY_F1;
+        case SDLK_F2:          return KEY_F2;
+        case SDLK_F3:          return KEY_F3;
+        case SDLK_F4:          return KEY_F4;
+        case SDLK_F5:          return KEY_F5;
+        case SDLK_F6:          return KEY_F6;
+        case SDLK_F7:          return KEY_F7;
+        case SDLK_F8:          return KEY_F8;
+        case SDLK_F9:          return KEY_F9;
+        case SDLK_F10:         return KEY_F10;
+        case SDLK_F11:         return KEY_F11;
+        case SDLK_F12:         return KEY_F12;
+
+        case SDLK_BACKSPACE:   return KEY_BACKSPACE;
+        case SDLK_DELETE:      return KEY_DEL;
+
+        case SDLK_PAUSE:       return KEY_PAUSE;
+
+        case SDLK_KP_EQUALS:   return KEY_EQUALS;
+
+        case SDLK_LSHIFT:
+        case SDLK_RSHIFT:
+                               return KEY_RSHIFT;
+
+        case SDLK_LCTRL:
+        case SDLK_RCTRL:
+                               return KEY_RCTRL;
+
+        case SDLK_LALT:
+        case SDLK_LMETA:
+        case SDLK_RALT:
+        case SDLK_RMETA:
+                               return KEY_RALT;
+
+        case SDLK_CAPSLOCK:    return KEY_CAPSLOCK;
+        case SDLK_SCROLLOCK:   return KEY_SCRLCK;
+
+        case SDLK_KP0:         return KEYP_0;
+        case SDLK_KP1:         return KEYP_1;
+        case SDLK_KP2:         return KEYP_2;
+        case SDLK_KP3:         return KEYP_3;
+        case SDLK_KP4:         return KEYP_4;
+        case SDLK_KP5:         return KEYP_5;
+        case SDLK_KP6:         return KEYP_6;
+        case SDLK_KP7:         return KEYP_7;
+        case SDLK_KP8:         return KEYP_8;
+        case SDLK_KP9:         return KEYP_9;
+
+        case SDLK_HOME:        return KEY_HOME;
+        case SDLK_INSERT:      return KEY_INS;
+        case SDLK_END:         return KEY_END;
+        case SDLK_PAGEUP:      return KEY_PGUP;
+        case SDLK_PAGEDOWN:    return KEY_PGDN;
+        case SDLK_KP_MULTIPLY: return KEYP_MULTIPLY;
+        case SDLK_KP_PLUS:     return KEYP_PLUS;
+        case SDLK_KP_MINUS:    return KEYP_MINUS;
+        case SDLK_KP_DIVIDE:   return KEYP_DIVIDE;
+
+        default:               break;
+    }
+
+    // Returned value is different, depending on whether key mapping is
+    // enabled.  Key mapping is preferable most of the time, for typing
+    // in text, etc.  However, when we want to read raw keyboard codes
+    // for the setup keyboard configuration dialog, we want the raw
+    // key code.
+
+    if (key_mapping)
+    {
+        return sym->unicode;
+    }
+    else
+    {
+        return tolower(sym->sym);
     }
 }
 
@@ -497,3 +513,8 @@ void TXT_Sleep(int timeout)
     }
 }
 
+void TXT_EnableKeyMapping(int enable)
+{
+    key_mapping = enable;
+}
+
diff --git a/textscreen/txt_main.h b/textscreen/txt_main.h
index 49986faf..b693bce0 100644
--- a/textscreen/txt_main.h
+++ b/textscreen/txt_main.h
@@ -104,5 +104,10 @@ void TXT_GetMousePosition(int *x, int *y);
 
 void TXT_Sleep(int timeout);
 
+// Controls whether keys are returned from TXT_GetChar based on keyboard
+// mapping, or raw key code.
+
+void TXT_EnableKeyMapping(int enable);
+
 #endif /* #ifndef TXT_MAIN_H */