winemac: Track whether our windows would be visible if the process weren't hidden.

The -[NSWindow isVisible] method returns FALSE when the process is hidden,
but that's not what we need to know in some cases.

This fixes full-screen games which minimize their window when they lose
focus.  Command-Tabbing away hides the process.  Because the window was not
visible, the code didn't actually minimize it.  When switching back to the
process, no event was sent to the Wine back-end telling it the window had
been restored, so it never resumed drawing to it.

dlls/winemac.drv/cocoa_window.h

@@ -33,6 +33,7 @@ @interface WineWindow : NSPanel <NSWindowDelegate>
     BOOL maximized;
     BOOL fullscreen;
     BOOL pendingMinimize;
+    BOOL savedVisibleState;
     WineWindow* latentParentWindow;
     NSMutableArray* latentChildWindows;
 

dlls/winemac.drv/cocoa_window.m

@@ -543,6 +543,7 @@ + (WineWindow*) createWindowWithFeatures:(const struct macdrv_window_features*)w
         WineWindow* window;
         WineContentView* contentView;
         NSTrackingArea* trackingArea;
+        NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];
 
         [[WineApplicationController sharedController] flipRect:&window_frame];
 
@@ -595,12 +596,21 @@ + (WineWindow*) createWindowWithFeatures:(const struct macdrv_window_features*)w
         [window setContentView:contentView];
         [window setInitialFirstResponder:contentView];
 
-        [[NSNotificationCenter defaultCenter] addObserver:window
-                                                 selector:@selector(updateFullscreen)
-                                                     name:NSApplicationDidChangeScreenParametersNotification
-                                                   object:NSApp];
+        [nc addObserver:window
+               selector:@selector(updateFullscreen)
+                   name:NSApplicationDidChangeScreenParametersNotification
+                 object:NSApp];
         [window updateFullscreen];
 
+        [nc addObserver:window
+               selector:@selector(applicationWillHide)
+                   name:NSApplicationWillHideNotification
+                 object:NSApp];
+        [nc addObserver:window
+               selector:@selector(applicationDidUnhide)
+                   name:NSApplicationDidUnhideNotification
+                 object:NSApp];
+
         return window;
     }
 
@@ -714,9 +724,15 @@ - (void) setWindowFeatures:(const struct macdrv_window_features*)wf
         [self setHasShadow:wf->shadow];
     }
 
+    // Indicates if the window would be visible if the app were not hidden.
+    - (BOOL) wouldBeVisible
+    {
+        return [NSApp isHidden] ? savedVisibleState : [self isVisible];
+    }
+
     - (BOOL) isOrderedIn
     {
-        return [self isVisible] || [self isMiniaturized];
+        return [self wouldBeVisible] || [self isMiniaturized];
     }
 
     - (NSInteger) minimumLevelForActive:(BOOL)active
@@ -827,7 +843,7 @@ - (void) setMacDrvState:(const struct macdrv_window_state*)state
             pendingMinimize = FALSE;
             if (state->minimized && ![self isMiniaturized])
             {
-                if ([self isVisible])
+                if ([self wouldBeVisible])
                 {
                     if ([self styleMask] & NSFullScreenWindowMask)
                     {
@@ -1198,6 +1214,7 @@ - (void) doOrderOut
         }
         else
             [self orderOut:nil];
+        savedVisibleState = FALSE;
         if (wasVisible && wasOnActiveSpace && fullscreen)
             [controller updateFullscreenWindows];
         [controller adjustWindowLevels];
@@ -1637,6 +1654,17 @@ - (void) flagsChanged:(NSEvent *)theEvent
         }
     }
 
+    - (void) applicationWillHide
+    {
+        savedVisibleState = [self isVisible];
+    }
+
+    - (void) applicationDidUnhide
+    {
+        if ([self isVisible])
+            [self becameEligibleParentOrChild];
+    }
+
 
     /*
      * ---------- NSWindowDelegate methods ----------