playback: lock button change background color when activated

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

Sources/VLCMovieViewController.m

@@ -1402,6 +1402,10 @@ typedef NS_ENUM(NSInteger, VLCPanType) {
 - (void)toggleUILock
 {
     _interfaceIsLocked = !_interfaceIsLocked;
+    if (_interfaceIsLocked)
+        _multiSelectionView.displayLock = YES;
+    else
+        _multiSelectionView.displayLock = NO;
 }
 
 - (void)toggleEqualizer

Sources/VLCMultiSelectionMenuView.h

@@ -27,6 +27,7 @@
 @property (readwrite, assign) BOOL mediaHasChapters;
 
 - (void)setDisplayRepeatOne:(BOOL)displayRepeatOne;
+- (void)setDisplayLock:(BOOL)displayLock;
 - (CGSize)proposedDisplaySize;
 
 @end

Sources/VLCMultiSelectionMenuView.m

@@ -141,6 +141,14 @@
         [_repeatButton setImage:[UIImage imageNamed:@"repeat"] forState:UIControlStateNormal];
 }
 
+- (void)setDisplayLock:(BOOL)displayLock
+{
+    if (displayLock)
+        [_lockButton setBackgroundColor:[UIColor VLCOrangeTintColor]];
+    else
+        [_lockButton setBackgroundColor:[UIColor clearColor]];
+}
+
 - (void)equalizerAction:(id)sender
 {
     [self.delegate toggleEqualizer];