macosx: Add pipIsActive property to main video view controller

Signed-off-by: Claudio Cambra <developer@claudiocambra.com>

modules/gui/macosx/windows/video/VLCMainVideoViewController.h

@@ -54,6 +54,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (readwrite, nonatomic) BOOL autohideControls;
 @property (readwrite, nonatomic) BOOL displayLibraryControls;
 @property (readonly) BOOL mouseOnControls;
+@property (readonly) BOOL pipIsActive;
 
 - (void)showControls;
 - (void)hideControls;

modules/gui/macosx/windows/video/VLCMainVideoViewController.m

@@ -467,6 +467,11 @@
     [_overlayView setNeedsDisplay:YES];
 }
 
+- (BOOL)pipIsActive
+{
+    return _voutViewController != nil;
+}
+
 - (void)pictureInPictureChanged:(VLCPlayerController *)playerController
 {
     if (_voutViewController) {