Window Fade in and Out

how do I fade a window in when it's opened and out when closed?

This should probably be done in Objective C. This has to be part of an AppleScript-Objective-C project. I'm using a property linked to开发者_如何学JAVA the window, and doing makeKeyAndOrderFront on it...

Any help would be appreciated!

Subclass (or add a category to) NSWindow and add:

- (void)fadeInAndMakeKeyAndOrderFront:(BOOL)orderFront {
    [self setAlphaValue:0.0];
    if (orderFront) {
        [self makeKeyAndOrderFront:nil];
    }
    [[self animator] setAlphaValue:1.0];
}

- (void)fadeOutAndOrderOut:(BOOL)orderOut {
    if (orderOut) {
        NSTimeInterval delay = [[NSAnimationContext currentContext] duration] + 0.1;
        [self performSelector:@selector(orderOut:) withObject:nil afterDelay:delay];
    }
    [[self animator] setAlphaValue:0.0];
}

This allows you to fade in/out windows programmatically.

To have a window fade out when its close button gets pushed, add this to the window's delegate:

- (BOOL)windowShouldClose:(id)sender {
    [window fadeOutAndOrderOut:YES];
    return NO;
}

To show a window with fade-in call [window fadeInAndMakeKeyAndOrderFront:YES]; instead of what you'd call otherwise.