I guess I should check if [NSApplication presentationOptions]
contains NSFullScreenModeApplicationPresentationOptions
, but how do I achieve that?
I was just looking for a solution myself and based on Matthieu's answer I created a category on NSWindow that works fine for me.
@interface NSWindow (FullScreen)
- (BOOL)mn_isFullScreen;
@end
@implementation NSWindow (FullScreen)
- (BOOL)mn_isFullScreen
{
return (([self styleMask] & NSFullScreenWindowMask) == NSFullScreenWindowMask);
}
@end
You need to use an & bitwise operator to test that that option is being used. Not tested but probably something like this:
- (BOOL) inFullScreenMode {
NSApplicationPresentationOptions opts = [[NSApplication sharedApplication ] presentationOptions];
if ( opts & NSApplicationPresentationFullScreen) {
return YES;
}
return NO;
}
To see if any of your windows are in full screen mode simply check the style mask of the window.
NSUInteger masks = [someNSWindow styleMask]
if ( masks & NSFullScreenWindowMask) {
// Do something
}
The way I handled it in pre-10.7 (where neither NSApplicationPresentationFullScreen
nor NSFullScreenWindowMask
was available) was to check
if ([mainWindow frame].size.height == [[mainWindow screen] frame].size.height)
{
// window is fullscreen
}
and this piece of really old code seem to still work not only on "Lion" but also on today's - at the time of writing 10.14.x - OS.
For Swift 3.0
if let window = NSApp.mainWindow {
let isWindowFullscreen = window.styleMask.contains(NSFullScreenWindowMask)
}
Obviously, for the original question, you'd replace NSApp.mainWindow
with whichever document window you're wanting to check.