MacRuby
Ruby + ObjC
Friday, February 6, 2009

COCOA
Apple's Objective-C based programming environment for
Mac OS X
Friday, February 6, 2009

COCOA
• frameworks
• APIs
• accompanying runtimes
Goal: native Mac applications
Friday, February 6, 2009

OBJECTIVE-C 2.0
• reflective
• object-oriented
• garbage collection
• 32 and 64-bit support
Friday, February 6, 2009

RUBY
obj.method parameter
Friday, February 6, 2009

OBJECTIVE-C 2.0
[obj method:parameter];
Friday, February 6, 2009

RUBY
friends = []
Friday, February 6, 2009

OBJECTIVE-C 2.0
NSMutableArray *friends =
[[NSMutableArray alloc] init];
Friday, February 6, 2009

COCOA
Goal => native Mac applications => ObjC
Friday, February 6, 2009

:emo:
Friday, February 6, 2009

RUBYCOCOA
bridge between
the Objective-C runtime and MRI
Friday, February 6, 2009

RUBYCOCOA
No more ObjC code to write :)
Friday, February 6, 2009

RUBYCOCOA
Write cocoa apps in RUBY :)
Friday, February 6, 2009

RUBYCOCOA
potentially prohibitive cost :(
Friday, February 6, 2009

RUBYCOCOA
conversion cost :(
Friday, February 6, 2009

RUBYCOCOA
message forwarding cost :(
Friday, February 6, 2009

MacRuby
Friday, February 6, 2009

MacRuby
APPLE'S OPEN SOURCE
PROJECT
Friday, February 6, 2009

MacRuby
NOT A BRIDGE
Friday, February 6, 2009

MacRuby
BUILT ON TOP OF THE
OBJECTIVE-C RUNTIME
Friday, February 6, 2009

MacRuby
all classes
=> Objective-C
all methods
=> Objective-C
all objects
=> Objective-C
Friday, February 6, 2009

MacRuby
CoreFoundation
Friday, February 6, 2009

MacRuby
native CoreFoundation
data types
Friday, February 6, 2009

MacRuby
native threads
Friday, February 6, 2009

MacRuby
Objective-C Garbage Collector
Friday, February 6, 2009

CODE EXAMPLE
Friday, February 6, 2009

$ macirb
>> friends = []
=> []
>> friends.class
=> NSMutableArray
>> friends << \"Juan\"
=> [\"Juan\"]
>> friends << \"Denis\"
=> [\"Juan\", \"Denis\"]
Friday, February 6, 2009

>> friends << {first_name: \"Laurent\",
last_name: \"Sansonetti\"}
=> [\"Juan\", \"Denis\",
{:first_name=>\"Laurent\",
:last_name=>\"Sansonetti\"}]
>> friends.length
=> 3
Friday, February 6, 2009

>> name = \"Matt Aimonetti\"
=> \"Matt Aimonetti\"
>> name.uppercaseString
=> \"MATT AIMONETTI\"
>> name.upcase
=> \"MATT AIMONETTI\"
Friday, February 6, 2009

X-CODE ENVIRONMENT
Friday, February 6, 2009

FREE
http://developer.apple.com/TOOLS/xcode/
Friday, February 6, 2009

WELL DOCUMENTED
http://developer.apple.com/index.html
Friday, February 6, 2009

WELL DONE
Friday, February 6, 2009

GREAT TOOLS
Friday, February 6, 2009

NEW PROJECT
Friday, February 6, 2009

MacRuby.framework
Friday, February 6, 2009

rb_main.rb
Friday, February 6, 2009

# Loading the Cocoa framework. If you need to load more
frameworks, you can
# do that here too.
framework 'Cocoa'
# Loading all the Ruby project files.
dir_path =
NSBundle.mainBundle.resourcePath.fileSystemRepresentation
Dir.entries(dir_path).each do |path|
if path != File.basename(__FILE__) and path[-3..-1] == '.rb'
require(path)
end
end
# Starting the Cocoa main loop.
NSApplicationMain(0, nil)
Friday, February 6, 2009

MainMenu.nib
Friday, February 6, 2009

Friday, February 6, 2009

V of MVC
Friday, February 6, 2009

PREPARE BINDINGS
Friday, February 6, 2009

C of MVC
Friday, February 6, 2009

class Controller
attr_writer :friendsTableView
def awakeFromNib
end
def numberOfRowsInTableView(view)
end
def tableView(view, objectValueForTableColumn:column,
row:index)
end
def tableView(view, setObjectValue:object,
forTableColumn:column, row:index)
end
def addFriend(sender)
end
end
Friday, February 6, 2009

class Controller
attr_writer :friendsTableView
end
ivar = outlet
Friday, February 6, 2009

class Controller
def awakeFromNib
end
end
called when instantiated by nib
Friday, February 6, 2009

class Controller
def awakeFromNib
@friends = []
@friendsTableView.dataSource = self
end
end
set the NSTableView data source
Friday, February 6, 2009

class Controller
def addFriend(sender)
end
end
button action
Friday, February 6, 2009

bind the UI with the Controller
Friday, February 6, 2009

NSTableDataSource
informal protocol
Friday, February 6, 2009

def numberOfRowsInTableView(view)
end
NSTableDataSource protocol
Friday, February 6, 2009

def tableView( view,
objectValueForTableColumn:column,
row:index )
end
NSTableView selector
Friday, February 6, 2009

def tableView(view,
setObjectValue:object,
forTableColumn:column,
row:index)
end
NSTableView selector
Friday, February 6, 2009

Compile
Friday, February 6, 2009

HOTCOCOA
Friday, February 6, 2009

PURE RUBY SEXINESS
Friday, February 6, 2009

NO X-CODE
Friday, February 6, 2009

RUBY DSL FOR COCOA
Friday, February 6, 2009

$ hotcocoa sdruby
Friday, February 6, 2009

$ hotcocoa sdruby
PROJECT SETTINGS
Friday, February 6, 2009

$ hotcocoa sdruby
CORE OF THE APP CODE
Friday, February 6, 2009

$ hotcocoa sdruby
MENU BAR
Friday, February 6, 2009

$ hotcocoa sdruby
RAKE TASKS
Friday, February 6, 2009

$ hotcocoa sdruby
APP RESOURCES
Friday, February 6, 2009

def start
application :name => \"Sdruby\" do |app|
app.delegate = self
window(:frame => [100, 100, 500, 500],
:title => \"SDRuby\") do |win|
win << label(:text => \"Hello from HotCocoa\",
:layout => {:start => false})
win.will_close { exit }
end
end
end
RUBY HELPERS
Friday, February 6, 2009

application :name => \"Sdruby\" do |app|
end
NSApplication
Friday, February 6, 2009

application :name => \"Sdruby\" do |app|
app.delegate = self
end
set the delegation
Friday, February 6, 2009

# file/open
def on_open(menu)
end
# file/new
def on_new(menu)
end
# help menu item
def on_help(menu)
end
# window/zoom
def on_zoom(menu)
end
# window/bring_all_to_front
def on_bring_all_to_front(menu)
end
set the delegation
Friday, February 6, 2009

window(:frame => [100, 100, 500, 500], :title => \"SDRuby\") do |win|
end
NSWindow helper
Friday, February 6, 2009

label(:text => \"Hello from HotCocoa\", :layout => {:start => false})
NSTextField helper
Friday, February 6, 2009

win << label(:text => \"Hello from HotCocoa\")
contentView.addSubview helper
Friday, February 6, 2009

win.will_close { exit }
window callback
Friday, February 6, 2009

$ macrake
Friday, February 6, 2009

USE ANY COCOA
FRAMEWORK
Friday, February 6, 2009

WEBKIT
Friday, February 6, 2009

framework 'webkit'
Friday, February 6, 2009

win << web_view( :layout => {:expand => [:width, :height]},
:url => \"http://sdruby.com\")
Friday, February 6, 2009

Friday, February 6, 2009

$ macrake deploy
Raffle.app
Friday, February 6, 2009

AND MUCH MORE
Friday, February 6, 2009

DEMO APPS
Friday, February 6, 2009

SD RUBY RAFFLE APP
Friday, February 6, 2009

¿What to do
with MacRuby?
Friday, February 6, 2009

WEB APP
CLIENT
Friday, February 6, 2009

REUSE RUBY CODE
Friday, February 6, 2009

RETHINK DESKTOP APPS
Friday, February 6, 2009

WEBKIT INTEGRATION
Friday, February 6, 2009

¿MacRuby’s future?
Friday, February 6, 2009

MUCH BETTER
PERFORMANCE
Friday, February 6, 2009

NEW VM
Friday, February 6, 2009

SOURCE OBFUSCATION
Friday, February 6, 2009

COMPILED CODE
Friday, February 6, 2009

OPTIMIZATIONS BASED ON
THE UNDERLYING OS
Friday, February 6, 2009

SOLID & SUPPORTED WAY TO
WRITE COCOA APPS
Friday, February 6, 2009

¿MAINSTREAM WAY TO WRITE
COCOA APPS?
Friday, February 6, 2009

¿IPHONE OUTPUT?
Friday, February 6, 2009

resources:
http://www.macruby.org
http://tinyurl.com/macruby-getting-started
http://macruby.org/trac/wiki/MacRubyTutorial
http://github.com/masterkain/macruby
http://tinyurl.com/macruby-hillegass
Friday, February 6, 2009

Props to
Rich Kilmer
(hotcocoa)
&
Laurent Sansonetti
(MacRuby)
Friday, February 6, 2009