SDRuby: When Objective-C and Ruby meet

SDRuby 2009

In 2008, Apple released MacRuby, an open source Ruby implementation written on top of the Objective-C runtime. Writing native MacOSX applications in Ruby without having to pay the cost of using a bridge is now a reality. This is an important milestone for Ruby, Apple and the Ruby community.

Matt Aimonetti will explain the implementation, show how to build desktop applications with MacRuby & HotCocoa, and discuss why Ruby developers should add this new tool to their utility belt. Matt will also talk about the future of MacRuby.

Video: http://sdruby.org/podcast/58

Transcript

1. MacRuby Ruby + ObjC Friday, February 6, 2009
2. COCOA Apple's Objective-C based programming environment for Mac OS X Friday, February 6, 2009
3. COCOA • frameworks • APIs • accompanying runtimes Goal: native Mac applications Friday, February 6, 2009
4. OBJECTIVE-C 2.0 • reflective • object-oriented • garbage collection • 32 and 64-bit support Friday, February 6, 2009
5. obj.method parameter RUBY Friday, February 6, 2009
6. [obj method:parameter]; OBJECTIVE-C 2.0 Friday, February 6, 2009
7. friends = [] RUBY Friday, February 6, 2009
8. NSMutableArray *friends = [[NSMutableArray alloc] init]; OBJECTIVE-C 2.0 Friday, February 6, 2009
9. COCOA Goal => native Mac applications => ObjC Friday, February 6, 2009
10. :emo: Friday, February 6, 2009
11. bridge between the Objective-C runtime and MRI RUBYCOCOA Friday, February 6, 2009
12. No more ObjC code to write :) RUBYCOCOA Friday, February 6, 2009
13. Write cocoa apps in RUBY :) RUBYCOCOA Friday, February 6, 2009
14. potentially prohibitive cost :( RUBYCOCOA Friday, February 6, 2009
15. conversion cost :( RUBYCOCOA Friday, February 6, 2009
16. message forwarding cost :( RUBYCOCOA Friday, February 6, 2009
17. MacRuby Friday, February 6, 2009
18. APPLE'S OPEN SOURCE PROJECT MacRuby Friday, February 6, 2009
19. NOT A BRIDGE MacRuby Friday, February 6, 2009
20. BUILT ON TOP OF THE OBJECTIVE-C RUNTIME MacRuby Friday, February 6, 2009
21. all classes => Objective-C all methods => Objective-C all objects => Objective-C MacRuby Friday, February 6, 2009
22. CoreFoundation MacRuby Friday, February 6, 2009
23. native CoreFoundation data types MacRuby Friday, February 6, 2009
24. native threads MacRuby Friday, February 6, 2009
25. Objective-C Garbage Collector MacRuby Friday, February 6, 2009
26. CODE EXAMPLE Friday, February 6, 2009
27. $ macirb >> friends = [] => [] >> friends.class => NSMutableArray >> friends << "Juan" => ["Juan"] >> friends << "Denis" => ["Juan", "Denis"] Friday, February 6, 2009
28. >> friends << {first_name: "Laurent", last_name: "Sansonetti"} => ["Juan", "Denis", {:first_name=>"Laurent", :last_name=>"Sansonetti"}] >> friends.length => 3 Friday, February 6, 2009
29. >> name = "Matt Aimonetti" => "Matt Aimonetti" >> name.uppercaseString => "MATT AIMONETTI" >> name.upcase => "MATT AIMONETTI" Friday, February 6, 2009
30. X-CODE ENVIRONMENT Friday, February 6, 2009
31. FREE http://developer.apple.com/TOOLS/xcode/ Friday, February 6, 2009
32. WELL DOCUMENTED http://developer.apple.com/index.html Friday, February 6, 2009
33. WELL DONE Friday, February 6, 2009
34. GREAT TOOLS Friday, February 6, 2009
35. NEW PROJECT Friday, February 6, 2009
36. MacRuby.framework Friday, February 6, 2009
37. rb_main.rb Friday, February 6, 2009
38. # 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
39. MainMenu.nib Friday, February 6, 2009
40. Friday, February 6, 2009
41. V of MVC Friday, February 6, 2009
42. PREPARE BINDINGS Friday, February 6, 2009
43. C of MVC Friday, February 6, 2009
44. 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
45. class Controller attr_writer :friendsTableView end ivar = outlet Friday, February 6, 2009
46. class Controller def awakeFromNib end end called when instantiated by nib Friday, February 6, 2009
47. class Controller def awakeFromNib @friends = [] @friendsTableView.dataSource = self end end set the NSTableView data source Friday, February 6, 2009
48. class Controller def addFriend(sender) end end button action Friday, February 6, 2009
49. bind the UI with the Controller Friday, February 6, 2009
50. NSTableDataSource informal protocol Friday, February 6, 2009
51. def numberOfRowsInTableView(view) end NSTableDataSource protocol Friday, February 6, 2009
52. def tableView( view, objectValueForTableColumn:column, row:index ) end NSTableView selector Friday, February 6, 2009
53. def tableView(view, setObjectValue:object, forTableColumn:column, row:index) end NSTableView selector Friday, February 6, 2009
54. Compile Friday, February 6, 2009
55. HOTCOCOA Friday, February 6, 2009
56. PURE RUBY SEXINESS Friday, February 6, 2009
57. NO X-CODE Friday, February 6, 2009
58. RUBY DSL FOR COCOA Friday, February 6, 2009
59. $ hotcocoa sdruby Friday, February 6, 2009
60. $ hotcocoa sdruby PROJECT SETTINGS Friday, February 6, 2009
61. $ hotcocoa sdruby CORE OF THE APP CODE Friday, February 6, 2009
62. $ hotcocoa sdruby MENU BAR Friday, February 6, 2009
63. $ hotcocoa sdruby RAKE TASKS Friday, February 6, 2009
64. $ hotcocoa sdruby APP RESOURCES Friday, February 6, 2009
65. RUBY HELPERS 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 Friday, February 6, 2009
66. NSApplication application :name => "Sdruby" do |app| end Friday, February 6, 2009
67. set the delegation application :name => "Sdruby" do |app| app.delegate = self end Friday, February 6, 2009
68. set the delegation # 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 Friday, February 6, 2009
69. NSWindow helper window(:frame => [100, 100, 500, 500], :title => "SDRuby") do |win| end Friday, February 6, 2009
70. NSTextField helper label(:text => "Hello from HotCocoa", :layout => {:start => false}) Friday, February 6, 2009
71. contentView.addSubview helper win << label(:text => "Hello from HotCocoa") Friday, February 6, 2009
72. window callback win.will_close { exit } Friday, February 6, 2009
73. $ macrake Friday, February 6, 2009
74. USE ANY COCOA FRAMEWORK Friday, February 6, 2009
75. WEBKIT Friday, February 6, 2009
76. framework 'webkit' Friday, February 6, 2009
77. win << web_view( :layout => {:expand => [:width, :height]}, :url => "http://sdruby.com") Friday, February 6, 2009
78. Friday, February 6, 2009
79. $ macrake deploy Raffle.app Friday, February 6, 2009
80. AND MUCH MORE Friday, February 6, 2009
81. DEMO APPS Friday, February 6, 2009
82. SD RUBY RAFFLE APP Friday, February 6, 2009
83. ¿What to do with MacRuby? Friday, February 6, 2009
84. WEB APP CLIENT Friday, February 6, 2009
85. REUSE RUBY CODE Friday, February 6, 2009
86. RETHINK DESKTOP APPS Friday, February 6, 2009
87. WEBKIT INTEGRATION Friday, February 6, 2009
88. ¿MacRuby’s future? Friday, February 6, 2009
89. MUCH BETTER PERFORMANCE Friday, February 6, 2009
90. NEW VM Friday, February 6, 2009
91. SOURCE OBFUSCATION Friday, February 6, 2009
92. COMPILED CODE Friday, February 6, 2009
93. OPTIMIZATIONS BASED ON THE UNDERLYING OS Friday, February 6, 2009
94. SOLID & SUPPORTED WAY TO WRITE COCOA APPS Friday, February 6, 2009
95. ¿MAINSTREAM WAY TO WRITE COCOA APPS? Friday, February 6, 2009
96. ¿IPHONE OUTPUT? Friday, February 6, 2009
97. 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
98. Props to Rich Kilmer (hotcocoa) & Laurent Sansonetti (MacRuby) Friday, February 6, 2009