Feeds

Leopard pimpin' method madness

Surf the information super hierarchy

Top 5 reasons to deploy VMware with Tegile

However, you'll notice that NSFrameView implements a method called _shadowType, which returns a bit-mask; effectively, an integer between 0 and 31. Leopard uses subtly different shadowing effects depending whether the window is a utility window, a sheet, or a normal window, whether it is opaque, is the key window, and so on.

What if you want your app to really, er, stand out from the crowd? Do you remember some earlier betas of Leopard? One release had a much more forceful looking window shadow than currently used. If you want to experiment with this, sub-classing the window frame is, once again, the only way to travel. Take a look at the following code:



- (void) _setShadowParameters
{
        extern OSStatus CGSSetWindowShadowAndRimParameters (void * cid, int wid, 
                  float standardDeviation, float density, 
                  int offsetX, int offsetY, unsigned int flags);
        
        int stype;
        if ((stype = [self _shadowType]) != [self shadowState])
        {
                [self setShadowState: stype];
                CGSSetWindowShadowAndRimParameters ([NSApp contextID], 
                                           [_window windowNumber], 
                                           35.0, 0.75, 0, 28, 0);
        }
}

The _setShadowParameters method is called, as needed, to set the shadow parameters associated with the window. Normally, this method looks at the type of window and sets the appropriate type of shadow. Here, we've overridden that behaviour and used the undocumented GSSetWindowShadowAndRimParameters routine to give the window a much more imposing screen presence!

You'll find that it's possible to push the standardDeviation and density values quite a bit higher than I've done, but don't go mad or you'll get unpleasant boundary effects appearing. You have been warned!

As ever, you can download the demo application and source code here

Providing a secure and efficient Helpdesk

More from The Register

next story
Google+ goes TITSUP. But WHO knew? How long? Anyone ... Hello ...
Wobbly Gmail, Contacts, Calendar on the other hand ...
Preview redux: Microsoft ships new Windows 10 build with 7,000 changes
Latest bleeding-edge bits borrow Action Center from Windows Phone
UNIX greybeards threaten Debian fork over systemd plan
'Veteran Unix Admins' fear desktop emphasis is betraying open source
Microsoft promises Windows 10 will mean two-factor auth for all
Sneak peek at security features Redmond's baking into new OS
Google opens Inbox – email for people too stupid to use email
Print this article out and give it to someone techy if you get stuck
DEATH by PowerPoint: Microsoft warns of 0-day attack hidden in slides
Might put out patch in update, might chuck it out sooner
Redmond top man Satya Nadella: 'Microsoft LOVES Linux'
Open-source 'love' fairly runneth over at cloud event
prev story

Whitepapers

Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.