Adding Apple IR Remote Support to
Your App
Mark Aufflick
February 1, 2009
+
Mark Aufflick February 1, 2009 Slide 1/9

Rule #1 of Programming
Everything should be code.
Perhaps that’s why I like LTEX so much.
A
(Or perhaps it’s because MS Word and Endnote
bite.)
Ergo. . .
Mark Aufflick February 1, 2009 Slide 2/9

LTEX slides–beamer
A
The LTEX beamer “document class” allows you
A
to easily create slides with notes:
\\ begin { frame }{ LaTeX slides - - beamer }
\\ begin { itemize }
\\ item The LaTeX beamer ‘‘ document class ’ ’
allows you to easily create slides with notes :
\\ end { itemize }
\\ end { frame }
\\ note [ itemize ]{
\\ item Here are some notes .
}
Mark Aufflick February 1, 2009 Slide 3/9

SplitShow PDF Presentation
pdflatex + beamer → PDF files
So we need a way to present PDF files
Preferably with notes on our second screen so I
can sound like I know what I’m talking about
Splitshow.app allows two screen presentations
from PDF
http://code.google.com/p/splitshow
Mark Aufflick February 1, 2009 Slide 4/9

Adding Apple IR Remote Support to Your
SplitShow PDF Presentation
2009-02-01 App
SplitShow PDF Presentation
pdflatex + beamer → PDF files
So we need a way to present PDF files
Preferably with notes on our second screen so I
can sound like I know what I’m talking about
Splitshow.app allows two screen presentations
from PDF
http://code.google.com/p/splitshow
• Toggle to notes screen by holding Play/Pause button on
remote.

Apple IR Remote Support
Splitshow didn’t have Apple IR Remote Support
I added it using classes by Martin Kahr:
http://www.martinkahr.com/source-code
Mark Aufflick February 1, 2009 Slide 5/9

Implementing Apple IR Remote Support
Add the class files to your project
Add the Carbon Framework (the IR classes dig
into IOKit and Carbon)
Create a class to be a delegate to both
NSApplication and RemoteControl
Or you can use RemoteControlContainer instead of
RemoteControl and get Keyspan support for free
Mark Aufflick February 1, 2009 Slide 6/9

NSApplication Delegate Methods
Create RemoteControl instance, and set self as delegate via:
- ( void ) a p p l i c a t i o n D i d F i n i s h L a u n c h i n g :( NSNo tificati on *) n
{
remoteControl = [[ RemoteControl alloc ] i n i t W i t h D e l e ga t e : self ];
[ remoteControl startLi stening : self ];
}
Monopolise/release the remote control via:
- ( void ) a p p l i c a t i o n W i l l B e c o m e A c t i v e :( NSNotif ication *) n
{
[ remoteControl startLi stening : self ];
}
- ( void ) a p p l i c a t i o n W i l l R e s i g n A c t i v e :( NSNotif ication *) n
{
[ remoteControl stopListening : self ];
}
Remember to instantiate and connect your NSApplication delegate in
MainMenu.xib
Mark Aufflick February 1, 2009 Slide 7/9

NSApplication Delegate Methods
Create RemoteControl instance, and set self as delegate via:
- ( void ) a p p l i c a t i o n D i d F i n i s h L a u n c h i n g :( NSNo tificati on *) n
{
remoteControl = [[ RemoteControl alloc ] i n i t W i t h D e l e ga t e : self ];
[ remoteControl startLi stening : self ];
}
Monopolise/release the remote control via:
- ( void ) a p p l i c a t i o n W i l l B e c o m e A c t i v e :( NSNotif ication *) n
{
[ remoteControl startLi stening : self ];
}
- ( void ) a p p l i c a t i o n W i l l R e s i g n A c t i v e :( NSNotif ication *) n
{
[ remoteControl stopListening : self ];
}
Remember to instantiate and connect your NSApplication delegate in
MainMenu.xib
Mark Aufflick February 1, 2009 Slide 7/9

Adding Apple IR Remote Support to Your
NSApplication Delegate Methods
2009-02-01 App
NSApplication Delegate Methods Create RemoteControl instance, and set self as delegate via:
- ( void ) a p p l i c a t i o n D i d F i n i s h L a u n c h i n g :( NSNot ificati on *) n
{
remoteControl = [[ RemoteControl alloc ] i n i t W i t h D e le g a t e : self ];
[ remoteControl startLis tening : self ];
}
Monopolise/release the remote control via:
- ( void ) a p p l i c a t i o n W i l l B e c o m e A c t i v e :( NSNotifi cation *) n
{
[ remoteControl startLis tening : self ];
}
- ( void ) a p p l i c a t i o n W i l l R e s i g n A c t i v e :( NSNotifi cation *) n
{
[ remoteControl stopListening : self ];
}
Remember to instantiate and connect your NSApplication delegate in
MainMenu.xib
• http://code.google.com/p/splitshow/source/
browse/trunk/src/SSAppDelegate.m
• Switch to Xcode to show code (after revealing second
method).

RemoteControl Delegate Method
- ( void ) s e n d R e m o t e B u t t o n E v e n t :( R e m o t e C o n t r o l E v e n t I d e n t i f i e r ) event
pressedDown :( BOOL ) pressedDown
remoteControl :( RemoteControl *) remoteControl
event is an integer, matching one of a number of
constants, eg:
kRemoteButtonLeft
kRemoteButtonRight
kRemoteButtonRight Hold
kRemoteButtonPlay
Simply perform the appropriate method call by matching
event in a case statement.
Often you want to discard button up events.
Mark Aufflick February 1, 2009 Slide 8/9

Adding Apple IR Remote Support to Your
RemoteControl Delegate Method
2009-02-01 App
RemoteControl Delegate Method - ( void ) s e n d R e m o t e B u t t o n E v e n t :( R e m o t e C o n t r o l E v e n t I d e n t i f i e r ) event
pressedDown :( BOOL ) pressedDown
remoteControl :( RemoteControl *) remoteControl
event is an integer, matching one of a number of
constants, eg:
kRemoteButtonLeft
kRemoteButtonRight
kRemoteButtonRight Hold
kRemoteButtonPlay
Simply perform the appropriate method call by matching
event in a case statement.
Often you want to discard button up events.
• http://code.google.com/p/splitshow/source/
browse/trunk/src/SSAppDelegate.m
• Switch to Xcode to show code.

Fin
Now your Cocoa Application has Apple Remote
support :)
Mark Aufflick February 1, 2009 Slide 9/9