ui/cocoa: Remove stretch_video flag

Evaluate [normalWindow styleMask] & NSWindowStyleMaskResizable instead.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Rene Engel <ReneEngel80@emailn.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20240224-cocoa-v12-10-e89f70bdda71@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

ui/cocoa.m

@@ -106,7 +106,6 @@ static void cocoa_switch(DisplayChangeListener *dcl,
 static int left_command_key_enabled = 1;
 static bool swap_opt_cmd;
 
-static bool stretch_video;
 static CGInterpolationQuality zoom_interpolation = kCGInterpolationNone;
 static NSTextField *pauseLabel;
 
@@ -522,7 +521,7 @@ - (void) resizeWindow
 {
     [[self window] setContentAspectRatio:NSMakeSize(screen.width, screen.height)];
 
-    if (!stretch_video) {
+    if (!([[self window] styleMask] & NSWindowStyleMaskResizable)) {
         [[self window] setContentSize:NSMakeSize(screen.width, screen.height)];
         [[self window] center];
     } else if ([[self window] styleMask] & NSWindowStyleMaskFullScreen) {
@@ -1354,15 +1353,10 @@ - (void)showQEMUDoc:(id)sender
 /* Stretches video to fit host monitor size */
 - (void)zoomToFit:(id) sender
 {
-    stretch_video = !stretch_video;
-    if (stretch_video == true) {
-        [cocoaView window].styleMask |= NSWindowStyleMaskResizable;
-        [sender setState: NSControlStateValueOn];
-    } else {
-        [cocoaView window].styleMask &= ~NSWindowStyleMaskResizable;
-        [cocoaView resizeWindow];
-        [sender setState: NSControlStateValueOff];
-    }
+    NSWindowStyleMask styleMask = [[cocoaView window] styleMask] ^ NSWindowStyleMaskResizable;
+
+    [[cocoaView window] setStyleMask:styleMask];
+    [sender setState:styleMask & NSWindowStyleMaskResizable ? NSControlStateValueOn : NSControlStateValueOff];
 }
 
 - (void)toggleZoomInterpolation:(id) sender
@@ -1638,7 +1632,7 @@ static void create_initial_menus(void)
     menu = [[NSMenu alloc] initWithTitle:@"View"];
     [menu addItem: [[[NSMenuItem alloc] initWithTitle:@"Enter Fullscreen" action:@selector(doToggleFullScreen:) keyEquivalent:@"f"] autorelease]]; // Fullscreen
     menuItem = [[[NSMenuItem alloc] initWithTitle:@"Zoom To Fit" action:@selector(zoomToFit:) keyEquivalent:@""] autorelease];
-    [menuItem setState: stretch_video ? NSControlStateValueOn : NSControlStateValueOff];
+    [menuItem setState: [[cocoaView window] styleMask] & NSWindowStyleMaskResizable ? NSControlStateValueOn : NSControlStateValueOff];
     [menu addItem: menuItem];
     menuItem = [[[NSMenuItem alloc] initWithTitle:@"Zoom Interpolation" action:@selector(toggleZoomInterpolation:) keyEquivalent:@""] autorelease];
     [menuItem setState: zoom_interpolation == kCGInterpolationLow ? NSControlStateValueOn : NSControlStateValueOff];
@@ -2027,7 +2021,6 @@ static void cocoa_display_init(DisplayState *ds, DisplayOptions *opts)
     }
 
     if (opts->u.cocoa.has_zoom_to_fit && opts->u.cocoa.zoom_to_fit) {
-        stretch_video = true;
         [cocoaView window].styleMask |= NSWindowStyleMaskResizable;
     }