Desktop notifications for phone calls on iOS 7
Solution 1:
Without a jailbreak what you ask is definitely not possible right now.
With a jailbreak there seems to be some apps that can send notifications like GrowlNotifier.
Solution 2:
Connect can show notifications on your Mac when you get a phone call. It connects to your device over Bluetooth and will 'ring' on your Mac. You can also make/receive calls on your Mac. No jailbreak required — works over public APIs for Bluetooth.
Solution 3:
With OS X Yosemite and iOS 8, you can use Continuity to be notified of incoming calls and answer them on the Mac.
