Hide sing button in load screen

Hide sing button if backgroundmusic is played

Vocaluxe/Base/CBackgroundMusic.cs

@@ -33,6 +33,7 @@ namespace Vocaluxe.Base
         private static bool _BackgroundMusicAdded;
         private static bool _Playing;
         private static bool _Disabled;
+        private static bool _CanSing;
 
         public static bool VideoEnabled
         {
@@ -54,6 +55,19 @@ namespace Vocaluxe.Base
             }
         }
 
+        public static bool CanSing
+        {
+            get
+            {
+                return _CanSing;
+            }
+
+            set
+            {
+                _CanSing = value;
+            }
+        }
+
         public static bool Disabled
         {
             get
@@ -156,6 +170,11 @@ namespace Vocaluxe.Base
                     }
                     else
                         Next();
+
+                    if (!IsBackgroundFile(_CurrentPlaylistElement))
+                        _CanSing = true;
+                    else
+                        _CanSing = false;
                 }
             }
         }

Vocaluxe/Screens/CPopupScreenPlayerControl.cs

@@ -46,6 +46,7 @@ namespace Vocaluxe.Screens
                     CBackgroundMusic.VideoEnabled = true;
             }
         }
+
         private bool VideoBackground
         {
             get
@@ -185,6 +186,7 @@ namespace Vocaluxe.Screens
             Statics[htStatics(StaticCover)].Visible = !_VideoPreview || !CBackgroundMusic.SongHasVideo;
             Buttons[htButtons(ButtonToBackgroundVideo)].Pressed = VideoBackground;
             Buttons[htButtons(ButtonShowVideo)].Pressed = _VideoPreview;
+            Buttons[htButtons(ButtonSing)].Visible = CBackgroundMusic.CanSing;
             return true;
         }
 

Vocaluxe/Screens/CScreenLoad.cs

@@ -179,6 +179,7 @@ namespace Vocaluxe.Screens
                 //if (!CBackgroundMusic.Playing)
                 //    CBackgroundMusic.Next();
             }
+            CBackgroundMusic.CanSing = false;
 
             return true;
         }
@@ -207,6 +208,8 @@ namespace Vocaluxe.Screens
                 _Intros[i].Close();
             }
 
+            CBackgroundMusic.CanSing = true;
+
             CLog.StopBenchmark(3, "Load Cover");
         }