gistfile1.rb

# basic test ;)
irb(main):001:0> 1+2
3

# I want to get MyAppDegetate instance
irb(main):002:0> OSX::UIApplication
OSX::UIApplication

irb(main):003:0> OSX::UIApplication.sharedApplication
#<OSX::UIApplication:0x1eefba class='UIApplication' id=0x26f6d0>

irb(main):004:0> OSX::UIApplication.sharedApplication.delegate
#<MyAppDelegate:0x1f8e70 class='MyAppDelegate' id=0x29dea0>

# done! 
irb(main):005:0> app = OSX::UIApplication.sharedApplication.delegate
#<MyAppDelegate:0x1f8e70 class='MyAppDelegate' id=0x29dea0>

# UIWindow instance
irb(main):006:0> app.window
#<OSX::UIWindow:0x1f8c40 class='UIWindow' id=0x2c0080>

# UILabel instance
irb(main):008:0> app.textView
#<OSX::UILabel:0x1f8902 class='UILabel' id=0x2e2e00>

# making the window color white
irb(main):009:0> app.window.setBackgroundColor OSX::UIColor.whiteColor
nil

# oh, the label disapeared. making the label color black
irb(main):012:0> app.textView.setTextColor OSX::UIColor.blackColor
nil

# I'd like to show on the window a image from web
irb(main):013:0> gif = open('http://www.ruby-lang.org/images/logo.gif','rb') {|f| f.read }
Errno::ENOENT: No such file or directory - http://www.ruby-lang.org/images/logo.gif
from (irb):13:in 'initialize'
from (irb):13:in 'open'
from (irb):13

# oops, we need open-uri
irb(main):014:0> require 'open-uri'
true

# done
irb(main):015:0> gif = open('http://www.ruby-lang.org/images/logo.gif','rb') {|f| f.read }
"GIF89a...."

# creating UIImage
irb(main):016:0> img = OSX::UIImage.imageWithData(OSX::NSData.dataWithBytes_length(gif, gif.length))
NameError: uninitialized constant OSX::UIImage
from (irb):16

# oops, we need OSX::ns_import (please try when you get NameError)
irb(main):017:0> OSX::ns_import :UIImage
OSX::UIImage

# ooops, NSData too.
irb(main):018:0> img = OSX::UIImage.imageWithData(OSX::NSData.dataWithBytes_length(gif, gif.length))
NameError: uninitialized constant OSX::NSData
from (irb):18

irb(main):019:0> OSX::ns_import :NSData
OSX::NSData

# UIImage created
irb(main):020:0> img = OSX::UIImage.imageWithData(OSX::NSData.dataWithBytes_length(gif, gif.length))
#<OSX::UIImage:0x1e23f0 class='UIImage' id=0x287850>

# creating UIImageView
irb(main):021:0> imgview = OSX::UIImageView.alloc.initWithImage img
NameError: uninitialized constant OSX::UIImageView
from (irb):21

# oops
irb(main):022:0> OSX::ns_import :UIImageView
OSX::UIImageView

# UIImageView created 
irb(main):023:0> imgview = OSX::UIImageView.alloc.initWithImage img
#<OSX::UIImageView:0x1d1af0 class='UIImageView' id=0x31c48d0>

# try addSubview
irb(main):026:0> app.window.addSubview imgview
nil

# tweaking、ImageView frame
irb(main):028:0> imgview.frame
#<OSX::CGRect:0x376dec @size=#<OSX::CGSize:0x376ba8 @height=119.0, @width=331.0>,
 @origin=#<OSX::CGPoint:0x376d38 @y=0.0, @x=0.0>>

irb(main):030:0> imgview.setFrame [-5,140] + imgview.frame.size.to_a
nil

# tweaking textView(Label) frame
irb(main):034:0> app.textView.setFrame [0,260,320,40]
nil

# tweaking label text
irb(main):035:0> app.textView.setText 'with RubyCocoa'
nil

# use more large font
irb(main):042:0> app.textView.setFont OSX::UIFont.boldSystemFontOfSize(32)
nil