Fix non-native full screen to support 'blurradius'

src/MacVim/MMWindow.h

@@ -29,6 +29,7 @@
 - (void)setContentMaxSize:(NSSize)size;
 - (void)setContentSize:(NSSize)size;
 - (void)setBlurRadius:(int)radius;
++ (void)setBlurRadius:(int)radius onWindow:(NSWindow *)win;
 
 - (IBAction)toggleFullScreen:(id)sender;
 - (IBAction)realToggleFullScreen:(id)sender;

src/MacVim/MMWindow.m

@@ -162,6 +162,11 @@ - (void)setContentSize:(NSSize)size
 }
 
 - (void)setBlurRadius:(int)radius
+{
+    [MMWindow setBlurRadius:radius onWindow:self];
+}
+
++ (void)setBlurRadius:(int)radius onWindow:(NSWindow *)win
 {
     if (radius >= 0) {
         CGSConnectionID con = CGSMainConnectionID();
@@ -170,7 +175,7 @@ - (void)setBlurRadius:(int)radius
         }
         CGSSetWindowBackgroundBlurRadiusFunction* function = GetCGSSetWindowBackgroundBlurRadiusFunction();
         if (function) {
-            function(con, (int)[self windowNumber], radius);
+            function(con, (int)[win windowNumber], radius);
         }
     }
 }

src/MacVim/MMWindowController.m

@@ -367,6 +367,8 @@ - (BOOL)presentWindow:(id)unused
         // GUIEnter auto command could cause this).
         [fullScreenWindow enterFullScreen];
         fullScreenEnabled = YES;
+        if (blurRadius != 0)
+            [MMWindow setBlurRadius:blurRadius onWindow:fullScreenWindow];
         shouldResizeVimView = YES;
     } else if (delayEnterFullScreen) {
         [self enterNativeFullScreen];
@@ -1017,6 +1019,9 @@ - (void)setBlurRadius:(int)radius
     blurRadius = radius;
     if (windowPresented) { 
         [decoratedWindow setBlurRadius:radius];
+        if (fullScreenWindow) {
+            [MMWindow setBlurRadius:radius onWindow:fullScreenWindow];
+        }
     }
 }
 
@@ -1045,8 +1050,9 @@ - (void)enterFullScreen:(int)fuoptions backgroundColor:(NSColor *)back
 
         NSColor *fullscreenBg = back;
 
-        // See setDefaultColorsBackground: for why set a transparent
-        // background color, and why 0.001 instead of 0.
+        // Copy option: 'transparency'
+        //   See setDefaultColorsBackground: for why set a transparent
+        //   background color, and why 0.001 instead of 0.
         if ([fullscreenBg alphaComponent] != 1) {
             fullscreenBg = [fullscreenBg colorWithAlphaComponent:0.001];
         }
@@ -1069,6 +1075,13 @@ - (void)enterFullScreen:(int)fuoptions backgroundColor:(NSColor *)back
             [fullScreenWindow enterFullScreen];
             fullScreenEnabled = YES;
 
+            // Copy option: 'blurradius'
+            //   Do this here instead of in full screen window since this
+            //   involves calling private APIs and we want to limit where we
+            //   do that.
+            if (blurRadius != 0)
+                [MMWindow setBlurRadius:blurRadius onWindow:fullScreenWindow];
+
             // The resize handle disappears so the vim view needs to update the
             // scrollbars.
             shouldResizeVimView = YES;