winemac: Implement support for WS_EX_TOPMOST windows.

dlls/winemac.drv/cocoa_window.h

@@ -26,6 +26,7 @@
     NSUInteger normalStyleMask;
     BOOL disabled;
     BOOL noActivate;
+    BOOL floating;
 }
 
 @end

dlls/winemac.drv/cocoa_window.m

@@ -62,6 +62,7 @@ static BOOL frame_intersects_screens(NSRect frame, NSArray* screens)
 
 @property (nonatomic) BOOL disabled;
 @property (nonatomic) BOOL noActivate;
+@property (nonatomic) BOOL floating;
 
     + (void) flipRect:(NSRect*)rect;
 
@@ -80,7 +81,7 @@ static BOOL frame_intersects_screens(NSRect frame, NSArray* screens)
 
 @implementation WineWindow
 
-    @synthesize disabled, noActivate;
+    @synthesize disabled, noActivate, floating;
 
     + (WineWindow*) createWindowWithFeatures:(const struct macdrv_window_features*)wf
                                  windowFrame:(NSRect)window_frame
@@ -147,8 +148,15 @@ static BOOL frame_intersects_screens(NSRect frame, NSArray* screens)
 
     - (void) setMacDrvState:(const struct macdrv_window_state*)state
     {
+        NSInteger level;
+
         self.disabled = state->disabled;
         self.noActivate = state->no_activate;
+
+        self.floating = state->floating;
+        level = state->floating ? NSFloatingWindowLevel : NSNormalWindowLevel;
+        if (level != [self level])
+            [self setLevel:level];
     }
 
     /* Returns whether or not the window was ordered in, which depends on if

dlls/winemac.drv/macdrv_cocoa.h

@@ -128,6 +128,7 @@ struct macdrv_window_features {
 struct macdrv_window_state {
     unsigned int    disabled:1;
     unsigned int    no_activate:1;
+    unsigned int    floating:1;
 };
 
 extern macdrv_window macdrv_create_cocoa_window(const struct macdrv_window_features* wf,

dlls/winemac.drv/window.c

@@ -103,6 +103,7 @@ static void get_cocoa_window_state(struct macdrv_win_data *data,
     memset(state, 0, sizeof(*state));
     state->disabled = (style & WS_DISABLED) != 0;
     state->no_activate = !can_activate_window(data->hwnd);
+    state->floating = (ex_style & WS_EX_TOPMOST) != 0;
 }