MacOSX/Framework/VLCVideoLayer: Implement hasVideo.

extras/MacOSX/Framework/Headers/Public/VLCVideoLayer.h

@@ -25,4 +25,8 @@
 #import <QuartzCore/QuartzCore.h>
 
 @interface VLCVideoLayer : CALayer
+{
+    BOOL hasVideo;
+}
+@property (readonly) BOOL hasVideo;
 @end

extras/MacOSX/Framework/Headers/Public/VLCVideoView.h

@@ -31,11 +31,11 @@
     NSColor * backColor;
     BOOL stretchesVideo;
     id layoutManager;
-    // TODO: Allow for view to report transparency to do some cool effects
-    // with the video?
+    BOOL hasVideo;
 }
 
 @property (assign) id delegate;
 @property (copy) NSColor *backColor;
 @property BOOL fillScreen;
+@property (readonly) BOOL hasVideo;
 @end

extras/MacOSX/Framework/Sources/VLCVideoLayer.m

@@ -42,20 +42,25 @@
 - (void)addVoutLayer:(CALayer *)aLayer;
 @end
 
+@interface VLCVideoLayer ()
+@property (readwrite) BOOL hasVideo;
+@end
+
 /******************************************************************************
  * Implementation VLCVideoLayer 
  */
 
 @implementation VLCVideoLayer
+@synthesize hasVideo;
 
 @end
-
 /******************************************************************************
  * Implementation VLCVideoLayer  (Private)
  */
 
 @implementation VLCVideoLayer (Private)
 
+
 /* This is called by the libvlc module 'opengllayer' as soon as there is one 
  * vout available
  */
@@ -73,6 +78,7 @@
     [self setNeedsDisplayOnBoundsChange:YES];
 
     [CATransaction commit];
+    self.hasVideo = YES;
 }
 
 - (void)removeVoutLayer:(CALayer*)voutLayer
@@ -80,6 +86,7 @@
     [CATransaction begin];
     [voutLayer removeFromSuperlayer];
     [CATransaction commit];
+    self.hasVideo = NO;
 }
 
 @end

extras/MacOSX/Framework/Sources/VLCVideoView.m

@@ -62,6 +62,10 @@
 - (void)addVoutLayer:(CALayer *)aLayer;
 @end
 
+@interface VLCVideoView ()
+@property (readwrite) BOOL hasVideo;
+@end
+
 /******************************************************************************
  * Implementation VLCVideoView 
  */
@@ -77,6 +81,7 @@
         [self setStretchesVideo:NO];
         [self setAutoresizesSubviews:YES];
         [self setFillScreen: NO];
+        self.hasVideo = NO;
         layoutManager = [[VLCVideoLayoutManager layoutManager] retain];
     }
     return self;
@@ -105,6 +110,7 @@
 
 @synthesize delegate;
 @synthesize backColor;
+@synthesize hasVideo;
 
 - (BOOL)fillScreen
 {
@@ -141,10 +147,12 @@
 
     [aLayer setNeedsLayout];
     [aLayer setNeedsDisplay];
+
     [rootLayer setNeedsDisplayOnBoundsChange:YES];
     [rootLayer setNeedsDisplay];
     [rootLayer layoutIfNeeded];
     [CATransaction commit];
+    self.hasVideo = YES;
 }
 
 - (void)removeVoutLayer:(CALayer*)voutLayer
@@ -152,6 +160,7 @@
     [CATransaction begin];
     [voutLayer removeFromSuperlayer];
     [CATransaction commit];
+    self.hasVideo = NO;
 }
 
 @end